KR100669225B1 - AF track circuit device - Google Patents

Abstract

The present invention relates to an AF track circuit device (Audio Frequency track circuit device: track circuit device using an audible frequency) belonging to the ground equipment of Automatic Train Control (ATC), which is a kind of signal security equipment,

In constructing the AF track circuit device, the central processing unit, the transmitting unit and the receiving unit are all divided into two relays among the components of the AF track circuit, and the monitoring unit has only a system display and storage function so that the fault occurs in the first device during operation of the device. In this case, the train can be automatically transferred to the second system without affecting the operation of the system to ensure safe operation of the train.

By additionally providing a system data storage device to store the magnetic data in the system data storage device so that the user can use the system data at any time simply download the data using the communication port,

By applying a programmable logic device (PLD) and a transmission central processing unit (CPU) that maximize the high efficiency and low power of the transmitter, it digitizes it and blocks existing failure factors in advance. · Make the maintenance easy for the user by making clear nothing,

It displays the transmission level, reception level, track frequency, on-board signal frequency, code frequency, etc. on the monitoring part, and displays the fault information of each card installed in the device on the front so that the user can In addition to enabling the inspection of the system, it is also possible to store the transmission and reception levels and fault information inside the device so that users can download and use the desired information for their convenience.

An AF track circuit device characterized in that the card of the transmitter and the receiver can be used regardless of the frequency.

ATC, ADC section, PWM generator section, PWM pattern ROM section, PWM output section, Receive level detection section, PLD, Reference voltage section

Description

AF track circuit device {AF Track Circuit}

1 is a dual configuration of the AF track circuit device according to the present invention

2 is a block diagram of a single system of the AF track circuit device according to the present invention.

3 is a detailed configuration diagram of the double relay of the AF track circuit device according to the present invention

Figure 4 is a detailed configuration of the central processing unit according to the present invention

5 is a detailed block diagram of a transmitter according to the present invention.

6 is a detailed configuration diagram of the receiver according to the present invention

7 is a detailed configuration diagram of the impedance matching unit according to the present invention

8 is a detailed configuration diagram of the monitoring unit according to the present invention

<Explanation of symbols by main parts of the drawings>

10: 1 system (AF track circuit) 20: 2 system (AF track circuit)

30: monitoring unit 40: impedance matching unit

100: first stage CPU (CPU) unit 110: signal input unit

111: first optical insulator unit 112: second optical insulator unit

113: rectifying section 114: input port section

121: speed code generator 122: input stabilizer

130: central processing unit (CPU) control unit 131: central processing unit (CPU)

132: storage unit 133: flash memory

134: compact card 135: watch dog

136: reset unit 137: reference voltage unit

150: communication unit 151: RS-232 interface unit

152: LED display unit 170: output port unit

171: output port 172: speed code display unit

173: RS-232 interface 190: power supply

191: rectifier

200: first transmission unit 210: input and output unit

211: RS-232 communication unit 212: RS-422 communication unit

221: optical-insulation unit 222: system status display unit

223: light emitting device (LED) display unit 230: transmission central processing unit (CPU) unit

231: central processing unit (CPU) 235: watchdog

236: reset unit 237: reference voltage unit

250: pulse width modulation (PWM) unit 251: pulse width modulation (PWM) generating unit

252: pulse width modulation (PWM) unit 253: pulse width modulation (PWM) output unit

270: output level receiver 271: signal converter (ADC)

272: rectifier

273: final transmission level and frequency modulator

290: power supply section 291: rectification section

300: first stage receiver

310: receiving input unit 311: impedance matching unit

312: band pass filter 313: level stabilizer

314: level detector 330: reception level detector

331: low pass filter 332: comparator

333: interface unit 334: rectifying unit

341: optical-insulation unit 342: amplification unit

343: track relay output unit 350: central processing unit (CPU) unit

351: central processing unit (CPU) 352: watchdog

353: reset unit 354: reference voltage unit

355: system status display unit 370: communication unit

371: RS-422 communication unit 372: RS-232 communication unit

390: power supply unit 391: rectification unit

400: impedance matching unit 410: matching transformer

420: tuning circuit section 450: comparator section

460: power supply section 461, 462: rectification section

500: monitoring unit

510: mode selection unit 511: selection mode unit

512: automatic mode unit 530: signal conversion detection unit

531, 534: low pass filter 532, 535: comparator

533, 536: rectifier 544: signal converter (ADC)

550: monitoring central processing unit (CPU) unit 551: monitoring central processing unit (CPU)

552: storage unit 555: watchdog

556: reset unit 557: reference voltage unit

570: communication unit 580: external display unit

581: decoder section 582, 584: buffer section

583 and 585: light emitting device display unit 590: power supply unit

591: power supply

600: 2nd CPU (CPU) unit

610 to 690: Each code has a code corresponding to the first CPU.

700: 2nd transmitter

710 ~ 790: have a code corresponding to the first transmitter

800: second receiver

810 ~ 890: Each code has a code corresponding to the first receiver

(Technical field to which the invention belongs)

The present invention relates to an AF track circuit device belonging to the ground equipment of the automatic train control system (ATC) which is a kind of signal security equipment.

AF track circuit device is a device that automatically detects the position of the train in all tracks using the railroad and serves as a pipeline for transmitting information from the ground to the vehicle.

The AF track circuit device is configured to transmit track information on the ground and receive track information on a vehicle using AF (Audio Frequency).

The AF track circuit device electrically separates tracks using impedance bonds for each track, and tracks are divided into oil-insulated sections and non-insulated sections.

The AF track circuit device transmits a preset frequency to one track circuit, and the output frequency is modulated by the track detection frequency, the on-vehicle signal frequency, and the train speed code frequency. After receiving through the receiving unit,

The received signal detects the orbital frequency and speed code frequency by demodulation, compares the orbital frequency and code frequency with the transmitted signal, checks the reception level if the information is consistent, and operates the orbital relay if the level is normal. No abnormality is indicated.

In addition, when the train enters the track, it transmits the vehicle signal and transmits the speed code and information instructed by the ground.

(Explanation of background technology)

The signal security facility is located on a site with large railroads and supports on-site signal safety, and supports automatic train stop (ATS) and automatic train (Automatic Train Stop) for safe operation of electric cars. Control (ATC), and train operation control system that controls and manages the movement of all trains on each site.

On-site signal security device is composed of interlocking device, track circuit device, automatic occlusion device, power supply device, signal device, train equipment.

The AF track circuit device serves as a kind of the track circuit device to detect a train on a railroad track.

In addition, the automatic train control device can be divided into a vehicle and a ground apparatus, AF track circuit device is a device belonging to the above ground apparatus.

The ATC protects trains from obstacles in the tracks that interfere with train operation, vehicles running in front of them, and safely decelerates or stops the trains in spite of the negligence or error of the engineer. It is a device that prevents accidents and controls direct train speed by receiving and reading driving information transmitted from the ground rail.

Therefore, the AF track circuit device examines the train operating conditions on the ground and performs a function of transmitting a driving command signal necessary for driving the electric vehicle from the ground (device) to the vehicle (device) when there is no obstacle in the operation of the electric car.

The AF track circuit device as described above is composed of a transmitter, a tuning panel, a receiver, and a monitoring unit.

The transmitter consists of an output and an oscillator.

The oscillator generates a train detection frequency required for a specific trajectory circuit, and generates an indication speed code frequency of a square wave according to signal manifestation conditions.

The output unit receives the train detection frequency and the indication speed code frequency output from the oscillator, receives the carrier frequency for the onboard signal from the onboard signal oscillator, modulates and amplifies the signal, and then transmits a signal to an impedance bond through a tuning panel. do.

The tuning panel is installed on the back of the card pile and consists of two completely independent tuning circuits. The tuning switch compensates the capacitance of the cable installed between the machine room and the impedance bond by appropriately adjusting the selection switch to improve the signal transmission characteristics. Performs a function

The receiving unit includes a receiving control unit, a synchronous rectifying unit (or a receiving synchronous rectifying unit), a track relay driver, and a track relay unit.

When the train does not occupy the track circuit, the train detection frequency is applied together with the adjacent track transmission frequency at the boundary point of the track circuit with impedance bond, and passes through half of the receiving tuning panel to the reception control unit in the same card file. do.

The reception control unit tunes, amplifies, and demodulates the received train detection frequency, reproduces a square wave having a level proportional to the received magnitude, and sends it to the reception synchronous rectification unit.

The receiving synchronous rectifier synchronously rectifies the signal by comparing the received input signal with the transmitted indication code frequency.

The rectified DC output is output to the orbital relay driver to excite the orbital relay to indicate an unoccupied state of the orbital circuit.

The AF track circuit device configured as described above performs one continuous operation by the role of each component.

That is, each of the components can be seen to complete a system through the steps of the oscillator, amplification unit, output unit, comparison unit, etc. by the configuration of the analog circuit.

However, although the characteristics of each device constituting the system are maintained at the initial stage of installation, the longer the period of use, the greater the generation of obsolete elements in proportion to the period of use, and many components constituting the circuit. As the number of components increases, the number of faults increases in proportion to the number of components. In addition, the time for troubleshooting is increased.

Therefore, there is a need to simplify the circuit to reduce the occurrence of the failure, and also to allow the user to check the overall operating state of the system at a glance, so that if a failure occurs, it can be quickly found and handled promptly. have.

In addition, it is possible to always check the change in the level and frequency of the AF track circuit device for each track by checking the data and predict the failure as well as the occurrence of the current failure and prevent the occurrence of the failure in advance. It is necessary to reduce the occurrence.

(Conventional technology)

In the conventional AF track circuit apparatus, the receiver and the oscillator are composed of two relays, but the transmitter is configured and used as a single system.

However, the conventional technology configured as described above,

There is a problem that the transmission unit failure leads to a failure of the entire system, which causes a problem in the train operation.

In addition, even when measuring the level and frequency of the AF track circuit device, the user needs to measure the transmission and reception level and frequency directly by using a measuring instrument. There was a lot to give cause.

In addition, there is a problem that the value of the regular measurement data that is currently recorded changes from time to time depending on the measuring person or measuring instrument. Therefore, since the reliability of the measurement data is lowered, it is difficult to use it as data for estimating the failure cycle of the system. In addition, there is a problem that it is impossible to predict the failure in advance by determining the trend of data change using such measurement data.

In addition, when a user measures data using a measuring instrument, even if only a slight carelessness in a narrow space, this immediately leads to the fall of the track tracker, causing artificial failure, causing a huge loss in train operation.

The purpose of the present invention for solving the above problems,

First, in constructing the AF track circuit device, the central processing unit, the transmitter, and the receiver are all divided into two relays among the components of the AF track circuit, and the monitoring unit has only the system display and storage functions. In the event of a failure in the system, it is possible to automatically switch over to the second system without affecting the operation of the system to ensure the safe operation of the train.

Secondly, by additionally providing a system data storage device to store the magnetic data in the system data storage device so that the user can use the system data at any time simply by downloading the data using the communication port if necessary.

Thirdly, by applying a logic program element (PLD) that maximizes the high efficiency and low power of the transmitter, it digitizes it and blocks existing failure factors in advance. .

Fourth, it displays the transmission level, reception level, track frequency, on-board signal frequency, code frequency, etc. on the monitoring unit, and displays the fault information of each card mounted in the device on the front so that the user does not need a separate measuring instrument and equipment. The system can be inspected with the naked eye and at the same time, it can store the transmission and reception level and fault information inside the device so that the user can download and use the desired information according to the user's convenience.

Fifth, the card of the transmitter and receiver can be used regardless of frequency.

The configuration of the present invention for achieving the above object is configured as shown in Figures 1 to 8. 1 is a double relay configuration diagram of an AF track circuit device according to the present invention, Figure 2 is a single system separate configuration diagram of the AF track circuit device according to the present invention.

The dual relay of the AF track circuit device according to the present invention in large, as shown in Figs. 1 and 2 to the first device 10, the second device 20, the impedance matching unit 400, the monitoring unit 500 Consist of

3 is a detailed configuration diagram of a double relay of the AF track circuit device according to the present invention. Looking at the configuration of the present invention in more detail by Figure 3,

The first device 10 is composed of a first CPU (CPU) unit 100, a first transmitter 200, a first receiver 300, the second device 20 is a second processor central processing The apparatus (CPU) unit 600, the two-stage transmitter 700, and the two-stage receiver 800, respectively.

That is, according to Figure 3, the configuration of the present invention,

It receives an external signal manifest code condition, checks the overall state of the first device 10, stores transmission and reception levels, outputs possible on-vehicle signal information according to train detection, and detects a transmission level. A first system processing unit (CPU) unit 100;

Set the trajectory frequency of the system, set the transmission level, make the communication connection of the system state of the first system device 10, and the next phase signal frequency according to the code frequency specified by the first system CPU unit 100 and the available signal signal A first transmission unit 200 for performing a modulated output of the output and the orbital frequency;

Receives the signal transmitted through the field rail and electrically insulates it, passes the bandpass filter that passes the corresponding frequency band, stabilizes the level through the level stabilizer, and then the received signal is the same as the transmitted signal. A first-order receiver 300 which analyzes whether the recognition and the presence code are the same, and displays the train occupancy and abnormality of the track to the outside using the track relay;

2, which receives an external signal manifest code condition, checks the overall state of the second apparatus 20, stores transmission and reception levels, outputs possible signal information according to train detection, and detects a transmission level. A system central processing unit (CPU) unit 600;

Set the orbital frequency of the system, set the transmission level, make the communication connection of the system state of the first system 10, and the code frequency and onboard signal available information designated by the second CPU unit 600. A second transmission unit 700 for performing on-vehicle signal frequency output and modulated output of orbital frequency according to the present invention;

Receives the signal transmitted through the field rail and electrically insulates it, passes the bandpass filter that passes the corresponding frequency band, stabilizes the level through the level stabilizer, and then the received signal is the same as the transmitted signal. A second-order receiver 800 for analyzing whether or not it is the same as a manifestation code and displaying the train occupancy and abnormality of the track to the outside using an orbital relay;

An impedance matching unit 400 which insulates the signals transmitted from the first transmission unit 200 and the second transmission unit 700 from the field impedance bond and compensates the capacitance;

The information (orbital frequency, onboard signal frequency, code frequency) transmitted from the first CPU (CPU) unit 100 and the second CPU (500) unit (Liquid Crystal Display) of the front panel (Liquid Crystal Display) A monitoring unit 500 for displaying on the LCD, receiving and transmitting a transmission level and a reception level, rectifying and filtering the LCD, and displaying the same on a liquid crystal display (LCD);

Characterized in that configured.

Each device listed above is in charge of one part of the AF track circuit device and is grouped together to form a block. In actual operation, however, each system operates in a separate system.

That is, when the first system operates, the first system central processing unit (CPU) unit 100, the first system transmitter 200, the first system receiver 300, the impedance matching unit 400, and the monitoring unit 500 are 1. It is operated as a system as a system device 10,

When the second system is operated, the second system CPU (600), the second transmitter 700, the second receiver 800, the impedance matching unit 400, and the monitoring unit 500 The device 20 operates as a system.

However, the technical configurations on the system of the first device 10 and the second device 20 are actually the same. Therefore, the removal of either the first card or the second card does not affect the operation of the other systems. Also, if the cards of the first system and the second system are used interchangeably, there is no effect on the operation of the system. There is no abnormality.

Therefore, in the description of the detailed configuration or operation relationship of the present invention will be described based on the first system (10).

4 is a detailed configuration diagram of a central processing unit (CPU) unit 100 of the AF track circuit device according to the present invention. To explain this,

The central processing unit (CPU) unit 100,

A signal input unit 110 for receiving and processing a position and a path setting condition of a front train from an interlocking device;

A central processing unit (CPU) controller 130 which analyzes the input signal input received from the outside and outputs the speed code of the train to the transmitter 200 and the outside;

A communication unit 150 for transmitting and receiving information to the monitoring unit 500, the transmitter 200, and the receiver 300;

An output port unit 170 for outputting a signal input from the signal input unit 110;

A power supply unit 190 supplying power required for the operation of the CPU unit system;

Characterized in that consisting of.

The signal input unit 110,

A second optical-insulation device unit 111 which receives a control signal other than a speed code and electrically insulates it;

A first optical-insulation device unit 112 which receives the speed code and electrically insulates the received speed code signal;

A rectifier 113 for rectifying the isolated speed code signal;

An input port unit 114 which receives a signal output from the second photo-insulation unit 111 and a signal rectified and output from the rectifying unit 113 and outputs the signal to a CPU controller;

A speed code generator 121 for receiving a condition of an adjacent track and a condition of a linkage device and generating a return signal of the speed expression code;

An input stabilization unit 122 which receives the transmission signal transmitted through the rail in the field, electrically insulates it, receives the filtered signal, stabilizes the level, and then outputs it to a central processing unit (CPU) controller;

Characterized in that configured.

The CPU control unit 130,

Function of the central processing unit (CPU) control unit is controlled as a whole, and whether the error is generated by using the program logic built in the signal generated by receiving the speed expression code processing unit and other information input from the signal input unit 110 After determining that, if the signal is determined to be normal, set the value of the rate code sent to the transmitter 200 through the communication unit 150 using the RS-422 communication method, and if the signal is an error, the system of the first and second systems The central processing unit (CPU) 131 serves to determine whether to transfer by comparing and determining the transfer, and to transfer the result of the comparison and analysis of the internal data and the data received from the outside to the monitoring unit 500. Wow;

A storage unit 132 for storing a transmission level produced by the CPU control unit and a signal input from the receiver 300;

A flash memory 133 for storing a transmission level produced by the central processing unit (CPU) control unit;

A compact card unit 134 for storing a signal input from the receiver 300;

A watchdog unit 135 which monitors an internal system of a CPU control unit and outputs a CPU reset signal when it is determined that an abnormal situation has occurred due to an error of the internal system;

A reset unit 136 for resetting the internal system by resetting the CPU when an internal system error occurs;

A reference voltage unit 137 which sets a reference voltage so that the CPU control unit 130 does not reset before the power supply of the rectifier reaches the normal operating voltage of the semiconductor at the initial power input;

Characterized in that configured.

The communication unit 150,

An RS-232 interface unit 151 for allowing the central processing unit (CPU) 131, the monitoring unit 500, the transmitting unit 200, and the receiving unit 300 to transmit and receive information from each other;

A light-emitting diode (LED) display unit 152 for displaying a state of transmitting and receiving information between the CPU 131, the monitoring unit 500, the transmitter 200, and the receiver 300. in;

Characterized in that configured.

The output port unit 170,

An output port 171 for converting the speed code signal input from the signal input unit 110 and outputting it to the field;

A speed code display unit 172 for displaying a speed code signal outputted through the output port 171;

An RS-232 interface unit 173 for transmitting and receiving the speed code signal;

Characterized in that configured.

The power supply unit 190,

An operating power supply unit (+ 24V) for supplying a 24V power supply for operation to the apparatus;

A rectifying circuit 191 for transforming power to supply 5V power required for signal control;

Characterized in that configured.

5 is a detailed block diagram of the transmitter 200 of the AF track circuit device according to the present invention. To explain this,

The transmitter 200,

An input / output unit 210 which is in charge of input / output of information input / output to a transmitter;

It analyzes the information received from the outside and generates signals such as track frequency, on-board signal frequency output, code frequency, etc. of the train and sends a command to the pulse width modulator (PWM) unit 250. A transmission central processing unit (CPU) unit 230 which receives a signal output from the PWM unit 250 through an input and an output unit 210 and determines whether an output error is present;

Pulse width modulation (PWM) unit 250 that detects the information in the transmission central processing unit (CPU) unit 230 to amplify the amplitude modulation signal required for the track, and then amplifies and outputs it to a required level. Wow;

An output level receiver 270 which rectifies the output signal of the impedance matching unit 400 and transmits the output signal to the transmission central processing unit (CPU) unit 230 to determine whether the transmission output is abnormal;

A power supply unit 290 supplying power required for the operation of the transmission unit;

Characterized in that configured.

The input and output unit 210,

An RS-232 communication unit 211 for transmitting and receiving information with the transmitting unit 700 of the partner system (second system) to transfer information when an abnormality occurs;

The central processing unit (CPU) unit 100 transmits / receives a code frequency and a transmission level value, transmits a transmission level value to the receiving unit 300, and receives information whether or not there is an abnormality in the reception level. RS-422 communication unit 212 for the;

An optical-insulating device unit 221 electrically insulating the signal received from the outside;

A system status display unit 222 for displaying the system selection and the system status of the system;

A light emitting device (LED) display unit 223 for displaying the state of the transmitter 200 on the front panel;

Characterized in that configured.

The transmission central processing unit (CPU) unit 230,

After receiving the information transmitted from the CPU unit 100 through the RS-422 communication unit 212, and transmits the received code frequency information to the pulse width modulation (PWM) unit 250, and Analyzing the information input through the optical-insulation unit 221 of the input and output unit 210 to determine whether there is an error, and to set the frequency of the zone input from the pulse width modulation (WOM) unit 250 Receiving the information of the setting unit 261, receiving the transmission output output from the pulse width modulation (PWM) unit 250 and compare it to determine whether the transmission output of the pulse width modulation (PWM) unit 250 is normal Next, the central processing function that controls the output only when normal, and transmits the information of the frequency setting unit 261 to the central processing unit (CPU) unit 100 through the RS-422 communication unit 222 A device (CPU) 231;

A watchdog unit 235 for determining an error of the internal system and outputting a CPU reset signal when an error occurs;

A reset unit 236 for monitoring the internal system and outputting a signal for resetting the central processing unit (CPU) 231 when an abnormal situation that is determined to be an error of the internal system occurs;

A reference voltage unit 237 which sets a reference voltage so that the transmitting central processing unit (CPU) 230 does not reset before the power of the rectifier reaches the normal operating voltage of the semiconductor at the initial power input;

Characterized in that configured.

The pulse width modulation (PWM) unit 250,

Pulse width modulation (PWM) generator 251 which modulates and outputs the information received from the transmitting central processing unit (CPU) 230 through the internal data bus and the orbital frequency set by the frequency setting unit 261. Wow;

Pulse Width Modulation (PWM) pattern storage (Read Only Memory: ROM) that modulates the orbital frequency, code frequency, and on-board signal frequency and sets the corresponding levels to generate the pulse width modulation pattern according to the program algorithm. Unit 252;

A pulse width modulated (PWM) output unit 253 for amplifying and outputting the pulse width modulated signal by using a full cross-section;

A frequency setting unit 261 for setting an orbital frequency required by the pulse width modulation (PWM) unit;

An output level setting unit 262 for setting a pulse width modulation signal transmission level in the pulse width modulation (PWM) generating unit 250;

Characterized in that configured.

The output level receiving unit 270,

A signal conversion (Analog to Digital Conversion: ADC) unit 271 extracts the signal output from the tuning circuit 420 of the impedance matching unit 400, converts the extracted analog signal into a digital signal, and transmits the signal to a monitoring central processing unit. )Wow;

A rectifier 272 for rectifying the signal passing through the low pass filter;

A final transmission level and frequency modulator 273 for rectifying the output signal of the impedance matching unit 400 and transmitting the output signal to the transmission central processing unit 230 so as to determine whether the transmission output is abnormal.

Characterized in that configured.

The power supply unit 290,

An operating power supply unit (+ 24V) for supplying a 24V power source necessary for the operation of the transmitter;

A rectifying circuit 291 for transforming power to supply 5V power required for signal control of the transmitter;

Characterized in that configured.

Reference numeral 280 not described above is a motherboard of an impedance matching unit.

6 is a detailed block diagram of the receiver 300 of the AF track circuit device according to the present invention. To explain this,

The receiver 300,

A reception input unit 310 for receiving a track signal output from the transmitter 200 through the impedance bond through an impedance bond and transmitting a reception level to the reception central processing unit (CPU) unit 350;

A reception level detector 330 which detects and filters the level of the input signal and receives only a set track frequency;

A reception central processing unit (CPU) unit 350 which receives the information from the reception level detection unit 330 and compares it with the signal output from the transmission unit 200 and detects an error of the reception unit itself;

A light emitting device (LED) display unit 361 for displaying the state of the receiver 300 to the outside;

A track relay unit 380 for displaying a track occupancy state of the train outside according to the received data;

A communication unit 370 for transmitting information of orbital reception data;

A power supply 390 for supplying power for the operation of the device;

Characterized in that configured.

The reception input unit 310,

An impedance matching unit 311 which electrically insulates the track signal output from the transmitter 200 to the track through an impedance bond and electrically insulates the impedance signal;

A band pass filter unit 312 for filtering the impedance matched signal according to a specified frequency band;

A level stabilizer 313 for removing noise from the filtered signal and stabilizing the level;

A level detecting unit 314 for transmitting a reception level to the monitoring unit 500;

Characterized in that configured.

The reception level detection unit 330,

A low pass filter 331 for removing the carrier frequency by using the low pass filter for the stabilized signal and extracting only the signal frequency;

A comparator 332 for generating the extracted signal into a shaped square wave;

An interface unit 333 for converting the shaped square wave into a level suitable for a central processing unit (CPU);

A rectifier 334 which receives the signal passing through the low pass filter 331 and rectifies the signal and transmits the signal to the CPU 351;

Characterized in that configured.

The receiving central processing unit (CPU) unit 350,

When the signal converted by the reception level detecting unit 330 is provided as an interrupt input, the orbital relay is analyzed by comparing the input signal with the level setting value and the present code provided by the transmitter 200 through the RS-422 communication unit 371. A receiving central processing unit (CPU) 351 for outputting to the unit 380;

A watchdog unit 352 for determining an error of an internal system and outputting a CPU reset signal when an error occurs;

A reset unit 353 for monitoring the internal system and outputting a signal for resetting the central processing unit (CPU) 231 when an abnormal situation that is determined to be an error of the internal system occurs;

A reference voltage unit 354 which serves to set a reference voltage so that the receiving central processing unit (CPU) 351 is not reset before the power supply of the rectifier is before the normal operating voltage of the semiconductor upon initial power input;

A system status display unit 355 for displaying the system selection and the system status of the system;

Characterized in that configured.

The track relay unit 380,

An optical-isolator unit 343 for electrical isolation from the receiving central processing unit (CPU) 351;

An amplifier 342 for amplifying the signal passing through the optical-insulator unit 343;

An orbital relay output section 341 for operating an orbital relay through the amplifier;

Characterized in that configured.

Reference numeral 371 of the communication unit 370 denotes an RS-422 communication unit line for transmitting and receiving information with the transmitter 200 and the central processing unit (CPU) unit 100, and reference numeral 372 denotes an external device. RS-232 communication line for sending and receiving level and record information.

The power supply unit 390,

An operating power supply unit (+ 24V) for supplying a 24V power supply for operation of the receiver;

A rectifying circuit 391 for transforming power to supply 5V power required for signal control of the receiver;

Characterized in that configured.

7 is a detailed block diagram of the impedance matching unit 400 of the AF track circuit device according to the present invention. To explain this,

The impedance matching unit 400,

An impedance matching transformer unit 410 for matching an impedance output with a signal output from the pulse width modulation (PWM) output unit 253 of the transmitter 200 and the impedance bond installed in the field rail;

A tuning circuit unit 420 for compensating for the capacitance of the cable connected up to the impedance bond and outputting it to the track;

A matching transformer 440 for matching a transmission output voltage passed through the tuning circuit 420;

A rectifier 430 for electrically insulating the output signal of the matching transformer and converting the signal to a DC value so as to be received by the transmitter 200 and the CPU 100;

A comparator unit 450 which transmits the signal transmitted to the rectifier unit 430 to the transmitter unit 200 and the central processing unit 100 so as to form a square wave and compare it with the level value output from the transmitter unit 200;

A power supply unit 460 for supplying a driving voltage 24V necessary for the impedance matching unit and voltages (+ 5V, -5V) necessary for signal control;

Characterized in that configured.

The power supply unit 460,

Rectifications 461 and 462 are further provided to supply a driving voltage 24V necessary for the impedance matching unit and voltages (+ 5V, -5V) necessary for signal control.

8 is a detailed configuration diagram of the monitoring unit 500 of the AF track circuit device according to the present invention. To explain this,

The monitoring unit 500,

A signal input unit 510 for selecting a commercial system and an automatic switching method;

The transmission output level and the manifest code are extracted from the tuning circuit 420 of the impedance matching unit 400, and the matching unit 311 of the receiver input unit 310 detects the reception level and the manifest code to obtain the detected analog data. A signal conversion (ADC) detection unit 530 which converts the digital signal and transmits the serial signal to the monitoring central processing unit (CPU) 550 in a serial manner;

Receives the information of the signal conversion (ADC) detection unit and stores the information in the storage device, and outputs the stored information using the liquid crystal display (LCD) of the external display unit 580, external information through the communication unit 570 A monitoring central processing unit (CPU) 550 for displaying a light emitting element (LED) on the display unit 580;

A communication unit 570 which performs an information transmission function with the central processing unit 100;

An external display unit 580 for displaying the received level and information with a liquid crystal display (LCD) and a light emitting device (LED) so that the user can visually check the received level and information;

A power supply unit 590 for supplying power for operation of the device;

Characterized in that configured.

The signal input unit 510,

A selection mode unit 511 for arbitrarily selecting a first device 10 and a second device 20 by a user;

An automatic mode unit 512 for automatically implementing the system selection to automatically switch to the opposite system when an error occurs in the system in use;

Characterized in that configured.

The signal conversion (ADC) detection unit 530,

The transmission output level and the manifestation code are extracted from the tuning circuit 420 of the impedance matching unit 400, and the matching transformer 314 is detected by detecting the reception level and the manifest code by the matching section 311 of the reception input unit 310. Low pass filter units 531 and 534 for electrically removing the signal and then removing the carrier frequency using a low pass filter and extracting only the signal frequency;

Comparators 532 and 535 for converting the extracted signal into a shaped square wave to a level suitable for a central processing unit;

Rectifiers 533 and 536 which receive signals passing through the low pass filter units 531 and 534 and rectify the signals;

The manifest code is transmitted to the monitoring central processing unit (CPU) 551, and the signal passed through the low pass filter unit 531 and 534 is received through the rectifiers 533 and 536, and then detected. A signal conversion (ADC) unit 544 for converting the data into digital and transmitting the data to the monitoring central processing unit (CPU) 551 in a serial manner;

Characterized in that configured.

The monitoring central processing unit (CPU) unit 550,

A monitoring central processing unit (CPU) 551 which controls the operation status of the monitoring device and controls the user to grasp the operation status of the device by outputting and displaying the operation status of the poultry devices 10 and 20 to the display unit. )Wow;

A storage unit 552 for storing a transmission / reception level detected by the signal conversion (ADC) detection unit 530;

A watchdog unit 555 for determining an error of an internal system and outputting a CPU reset signal when an error occurs;

A reset unit 556 for monitoring the internal system and outputting a signal for resetting the central processing unit (CPU) 551 when an abnormal situation that is determined to be an error of the internal system is reset;

A reference voltage unit 557 which serves to set a reference voltage so that the transmitting central processing unit (CPU) 230 does not reset before the power supply of the rectifier reaches the normal operating voltage of the semiconductor at the initial power input;

Characterized in that configured.

The communication unit 570 transmits and receives information to and from the central processing unit (CPU) units 100 and 600 through the RS-232 communication unit 571, and transmits the RS-232 1Port and the 2nd unit to the first unit 10. It is configured to receive the status of both systems by specifying the RS-232 1 port to (20).

The external display unit 580,

A decoder unit 581 for decoding an operation signal of the apparatus;

Buffer units 582 and 584 for buffering signals output from the decoder unit;

Display units 583 and 585 for outputting a signal output through the buffer unit using a liquid crystal display window (LCD);

Characterized in that configured.

The AF track circuit device according to the present invention having the above-described configuration is divided into two units of the first system 10 and the second system 20 while sharing the impedance matching unit 400 and the monitoring unit 500. It is operated as a relay, and only one of the two systems is operated and the other serves as a standby system only when the system in use is broken.

Therefore, as described above, since the first system 10 and the second system 20 are the same in the operation process of the second system, the operation process will be described based on the first device 10.

The central processing unit (CPU) unit 100 of the AF track circuit device analyzes and stores the information inside the AF track circuit device and analyzes the information input through the indicated speed code selection circuit to generate a code frequency according to the input information. It serves to deliver information to the transmitter 200.

The command speed code selection circuit outputs the orbital frequency from the central processing unit (CPU) control unit 131 using the pulse width modulation method and provides the signal as a common signal of the command speed code selection circuit. Insulating the information of the code frequency selected in the commanded speed code selection circuit through the optical-insulation unit 112, and then receiving the signal from the central processing unit control unit 131 via the rectifier 113 Minimize the error of indication speed code selection by external factors.

Next, the transmission output and the signal frequency are detected using the signal conversion port and the interrupt port inside the CPU control unit 131, and the transmission output and the reception unit of the transmission unit 200 using the RS-422 communication unit 151. RS-422 communication unit 151 receives the received input of 300) and stores the information using the compact memory and the flash memory, compares and analyzes the transmission value and the reception value, and if the system is abnormally operated due to a serious error. Instructs the transmitter 200 to transmit information to the transmitter 200 to perform a transition.

In addition, the information is displayed on the front side by using a light emitting device (LED) based on the information input from the command speed code selection circuit to inform the user of the state of the central processing unit (CPU) unit 100.

In addition, the watchdog unit 135 outputs a CPU automatic reset signal when an error occurs in the system by determining an error of the system.

In addition, the reference voltage unit 137 checks the voltage of the power supply and detects the voltage so that the CPU control unit 131 can start the safe operation. Will reset.

The transmitter 200 basically includes a frequency setting unit 261 that sets an operating frequency of the system so that the frequency of the entire system can be selected. When the frequency selection is completed, the frequency selection state of the counterpart 20 is detected by using the RS-232 communication unit 211 to determine whether the frequency selection is abnormal. If the selection of both systems is the same, the frequency selection is completed by the receiving unit 300. ) And the selected frequency to the central processing unit (CPU) unit 100 and the monitoring unit 500 transmits the selected frequency to the central processing unit (CPU) unit 100.

When the next frequency selection is completed, the information of the code frequency and the selected frequency received by the CPU 100 is analyzed by the CPU 231 to generate the pulse width modulation (PWM). Transfer to the unit 251.

The pulse width modulation (PWM) generating unit 251 uses the information received from the transmitting central processing unit (CPU) 231 and the output level setting unit 262 provided on the front of the transmitting unit 200 to determine the distance and the receiving unit. The output level is set according to the reception level detected through the 300, and the pulse width modulation (PWM) pattern storage (Read Only Memory: ROM) unit 252 downloads the corresponding output information by using the received information. It receives the pulse width modulation (PWM) output unit 253 using the whole church path and amplifies it to transmit output.

The transmitted output is electrically insulated through the impedance matching unit 400, and when it is received at a level that can be detected by the transmitting CPU 231 by filtering it, the transmitting CPU 231. ), It is compared with the transmission output level and determines whether to switch over or system error according to the range of the reference value. Transfer and error indication reference value is based on the value set in the internal level setting part.

On the other hand, the impedance matching unit 400 is a signal output from the pulse width modulation (PWM) output unit 253 of the transmitter 200 up to the impedance bond matching unit 410 impedance bond matching the impedance and the impedance bond installed in the field rail Compensating the capacitance of the connected cable to output the tuning circuit unit 420 and the tuning output voltage passing through the tuning circuit unit 420 through the matching transformer 440 electrically insulated through the rectifying unit 430 Detects the signal frequency through the comparator 450 that generates a square wave, and detects the output level through the rectifier 430 to transmit the detection information to the transmitter 200 and the CPU 100. do.

Next, the receiver 300 detects a track signal output from the receiver input unit 310 to the track from the transmitter 200 through an impedance bond, electrically insulates it from the impedance matching unit 311, and performs impedance matching to perform a BPF unit ( Filtering is performed according to the frequency band specified in 312, and the level stabilizer 313 removes noise and stabilizes the level to transmit it to the reception level detector 330.

The reception level detector 330 removes the carrier frequency using a low pass filter, extracts only the signal frequency, and converts the signal of the signal frequency into a shaped square wave through the comparator 332 to form a central processing unit (CPU). Convert it to the appropriate level.

Meanwhile, the signal passing through the low pass filter unit 331 is rectified through the rectifying unit 334 and then transmitted to the receiving central processing unit (CPU) 351.

Next, when the signal converted by the reception level detector 330 is provided as an interrupt input, the reception central processing unit (CPU) 351 provides the input signal and the level provided by the transmitter 200 through the RS-422 communication unit 371. The set value and the manifest code are compared and analyzed and output to the track relay unit 380.

The watchdog unit 352 determines an error of the internal system and outputs a CPU reset signal when an error occurs, and the reference voltage unit 354 checks the operating voltage of the CPU 351 to determine the main voltage. It prevents the reset of the reception central processing unit (CPU) 351 from operating unstable due to a power failure.

The light emitting device (LED) display unit 361 displays the state of the receiver 300 on the front side through the light emitting device (LED).

In addition, the RS-422 communication unit 371 of the communication unit 370 detects the information transmitted from the transmitting unit 200 and the central processing unit (CPU) unit 100 and receives the information from the receiving central processing unit (CPU) 350. The RS-232 communication unit 372 may receive information from the inside of the system from an external device, and the orbital relay unit 380 may transmit a signal output from the receiving central processing unit (CPU) 350 to an optical-insulated field. After electrically insulated from the tooth 343 and amplified by the amplifying unit 342, a signal for operating the orbital relay is output through the orbital relay output unit 341.

Next, the monitoring unit 500 has a selection switch for selecting a commercial system and a preliminary system switching method and manually selecting a commercial system preliminary system.

In addition, the tuning circuit 420 of the impedance matching unit 400 detects the transmission output level and the signal frequency, and the matching unit 311 of the reception input unit 310 detects the reception level and the signal frequency. After electrical insulation using the), remove the carrier frequency using a low pass filter, detect only the signal frequency, and monitor the detected signal frequency to form a square wave through the comparator 532 The CPU 551.

The monitoring central processing unit (CPU) 551 receives the signal passing through the low pass filter unit 531 and 534, detects the level through the rectifiers 533 and 536, and then uses the 16-bit signal converter 544. By converting the analog data to digital through the transmission and reception level is transmitted to the monitoring central processing unit (CPU) (551). The monitoring central processing unit (CPU) 551 stores the received transmission / reception level in an internal flash memory, and the data is information transmitted from the central processing unit (CPU) unit 100 through the communication unit 570. It is displayed on the liquid crystal display (LCD) installed in front of the monitoring unit 500 together with the track frequency, the onboard signal frequency, the signal frequency, and the like.

In addition, the monitoring unit 500 has a light emitting device (LED) display unit 585 to display the state of the monitoring unit to the outside, and the LCD display unit 583 performs a function of additionally displaying failure information. .

The communication unit 570 transmits and receives information to and from the central processing unit (CPU) unit 100 through the RS-232 communication unit 571, and transmits the RS-232 1 port to the first device 10 and the second device 20. ) RS-232 1 port is designated and displays the status of both systems from time to time.

Also, the watchdog unit 555 determines an error of the internal system and outputs a CPU reset signal when an error occurs, and the reference voltage unit 557 checks the operating voltage of the CPU 551 by monitoring. The reset of the monitoring central processing unit (CPU) 551 due to the error of the main power supply serves to prevent the operation unstable.

In order to stably perform the above operation, each part is provided with a constant voltage power supply circuit capable of supplying stable power to each part itself and disposed at the power input terminal.

The present invention through the operation process as described above,

If a fault occurs in the first gear during the operation of the equipment, it is possible to ensure the safe operation of the train by automatically switching to the second gear without affecting the operation of the system.

When the user needs to download data using the communication port, the system data can be used at any time.

It is possible to clarify the presence or absence of failures while blocking the existing failure factors in advance.

The user can visually inspect the system without the need for a separate measuring instrument and equipment, and can download and use the desired information according to the user's convenience.

According to the present invention configured as described above,

Either one caused by a single system or incomplete dual system configuration because the AF track circuit device is configured as a complete dual system, so that each system operates as a separate system, and only a matching transformer connected to the site is shared by both systems. The failure of the system has the effect of preventing the problem that leads to the failure of the entire system.

In addition, the present invention stores the various data in the system and, if necessary, by using the RS-232 communication method simply call the stored data to analyze the failure or to utilize the data to prevent the failure effect to facilitate the analysis And prevents future failures.

In addition, the present invention processes the pulse width modulation (PWM) output by using a whole logic channel using a program algorithm using a program logic element (PLD) in the final stage, the frequency oscillator used in the conventional analog circuit And by comparing the output to simplify the operation of performing the transmission output, it is possible to significantly reduce the point of failure than the conventional analog method, and has the advantage of easy maintenance due to deterioration of the characteristics of the semiconductor.

In addition, the present invention is composed of an algorithm using a pulse width modulation (PWM) program and a program that generates a frequency using the algorithm to configure an output circuit, so that the noise is not limited by the frequency and removes noise at the output end. It is also possible to simply change the jumper of the noise canceling circuit. In addition, since the result of the examination of the output signal is also generated and output from the transmitter, it is possible to clearly determine whether there is an abnormality by the user's setting.

In addition, each unit displays a fault on the front panel using LEDs, while the monitoring unit always displays values such as track frequency, onboard signal frequency, code frequency, transmission level, and reception level on the LCD. By displaying and zooming, it is possible to quickly and simply grasp the breakdown in case of failure.

In addition, the self-test function is added to the system itself so that the user can always check whether there is an abnormality, thereby increasing the convenience of use and maintenance.

Claims (22)

delete Signal input unit for receiving and processing the position of the train and the setting conditions of the front train from the interlocking device, and a central processing unit for outputting the speed code of the train to the transmitter and the outside by analyzing the input signal input received from the outside (CPU) control unit, a monitoring unit for transmitting and receiving information to a monitoring unit, a transmitting unit and a receiving unit, an output port unit for outputting a signal input from the signal input unit, and a power supply for operation of a central processing unit (CPU) system. The power supply unit is provided as a detailed component, receives the external signal expression code condition, checks the overall state of the first system (10) device, stores the transmission / reception level, and obtains the information of the wound signal according to the train detection. A first system central processing unit (CPU) unit 100 for outputting and detecting a transmission level; Set the orbital frequency of the system, set the transmission level, make the communication connection of the system state of the first system 10 device, and the code frequency and the next-order signal capable signal designated by the first system central processing unit (CPU) unit 100 A first transmitter 200 for performing on-vehicle signal frequency output and modulated output of the orbital frequency according to the first and second signals; Receives the signal transmitted through the field rail and electrically insulates it, passes the bandpass filter that passes the corresponding frequency band, stabilizes the level through the level stabilizer, and then the received signal is the same as the transmitted signal. A first receiver 300 which analyzes whether the recognition is identical to the manifest code and displays the train occupancy and abnormality of the track to the outside using the track relay; Signal input unit for receiving and processing the position of the train and the setting conditions of the front train from the interlocking device, and a central processing unit for outputting the speed code of the train to the transmitter and the outside by analyzing the input signal input received from the outside (CPU) control unit, a monitoring unit for transmitting and receiving information to a monitoring unit, a transmitting unit and a receiving unit, an output port unit for outputting a signal input from the signal input unit, and a power supply for operation of a central processing unit (CPU) system. The power supply part is provided as a detailed component, receives the external signal expression code condition, checks the overall state of the second system (20), stores the transmission / reception level, and outputs possible signal information according to the train detection. A second central processing unit (CPU) unit 600 for detecting a transmission level; Set the orbital frequency of the system, set the transmission level, make the communication connection of the system state of the first system 10 device, and the code frequency and the next-order signal capable signal designated by the second CPU unit 600. A two-stage transmitter 700 for modulating the on-vehicle signal frequency output and the orbital frequency according to the present invention; Receives the signal transmitted through the field rail and electrically insulates it, passes the bandpass filter that passes the corresponding frequency band, stabilizes the level through the level stabilizer, and then the received signal is the same as the transmitted signal. A two-receiver unit 800 which analyzes whether the recognition is identical to the manifest code, and displays the train occupancy and abnormality of the track to the outside using the track relay; An impedance matching unit 400 which insulates the signals transmitted from the first transmitter 200 and the second transmitter 700 from the field impedance bond and compensates for the capacitance; The information (orbital frequency, onboard signal frequency, code frequency) transmitted from the first CPU (CPU) unit 100 and the second CPU (600) 600 is displayed on the LCD of the front panel. A display unit 500 for displaying, receiving, rectifying, and filtering the transmission level and the reception level, and displaying the same on a liquid crystal display (LCD); AF track circuit device, characterized in that configured. The method of claim 2, The signal input unit 110, A second optical-insulation device unit 111 which receives a control signal other than a speed code and electrically insulates it; A first light-insulating device unit 112 which receives the speed code and electrically insulates the received speed code signal; A rectifier 113 for rectifying the isolated speed code signal; An input port unit 114 which receives a signal output from the second photo-insulation unit 111 and a signal rectified and output from the rectifying unit 113 and outputs the signal to a CPU controller; A speed code generator 121 for receiving a condition of an adjacent track and a condition of a linkage device and generating a return signal of the speed expression code; An input stabilization unit 122 which receives the transmission signal transmitted through the sage rail, electrically insulates it, receives the filtered signal, stabilizes the level, and outputs it to the CPU control unit; AF track circuit device, characterized in that configured. The method of claim 2, The CPU processing unit, It controls the functions of the central processing unit (CPU) control unit as a whole, and determines whether there is an error by using the program logic built in the signal generated by receiving the speed expression code processing unit and other information inputted from the signal input unit. When the signal is determined to be normal, the RS-422 communication method is used to set the value of the speed code sent to the transmitter 200 through the communication unit. A central processing unit (CPU) 131 which serves to determine a function and transmits a result of comparing and analyzing the internal data and the externally received data to the monitoring unit 500; A storage unit 132 for storing a transmission level produced by the CPU control unit and a signal input from the receiver 300; A flash memory 133 for storing a transmission level produced by the central processing unit (CPU) control unit; A compact card 134 for storing a signal input from the receiver 300; A watchdog unit 135 which monitors an internal system of a CPU control unit and outputs a CPU reset signal when it is determined that an abnormal situation occurs due to an error in the internal system; A reset unit 136 for resetting the internal system by resetting the CPU when an internal system error occurs; A power supply of the rectifier at the initial power input to the reference voltage unit 137 which serves to set the reference voltage such that the CPU control unit does not reset before the normal operating voltage of the semiconductor; AF track circuit device, characterized in that configured The method of claim 2, The communication unit, An RS-232 interface unit 151 for allowing the CPU 131, the monitoring unit 500, the transmitting unit 200, and the receiving unit 300 to transmit and receive information from each other; A light emitting device (LED) display unit 152 for displaying a state of transmitting and receiving information between the CPU 131, the monitoring unit 500, the transmitting unit 200, and the receiving unit 300; AF track circuit device, characterized in that configured. The method of claim 2, The output port portion, An output port 171 for converting the speed code signal inputted from the signal input unit and outputting the converted speed code signal to the field; A speed code display unit 172 for displaying a speed code signal outputted through the output port 171; An RS-232 interface unit 173 for transmitting and receiving the speed code signal; AF track circuit device, characterized in that configured. It receives the external signal manifest code condition, checks the overall status of the first system (10), stores the transmission and reception levels, outputs the possible signal information for the train detection, and detects the transmission level. A first system processing unit (CPU) unit 100; Pulse Width Modulation by generating signals such as track frequency, on-board signal frequency output, code frequency, etc. A transmission central processing unit (CPU) unit for transmitting a command to the PWM unit and receiving a signal output from the pulse width modulation unit through the input unit and the output unit to determine whether there is an output error; The CPU unit detects the information, pulses the amplitude modulated signal required for the track, and then outputs the pulse width modulated PWM to amplify and output the required level, and the impedance matching unit 400. The output level receiving unit delivers the output signal to the transmitting central processing unit (CPU) so as to determine whether the transmission output is abnormal by rectifying the signal, and the power supply unit supplying the power necessary for the operation of the transmitting unit. Bin Set the frequency, set the transmission level, make the communication connection of the system state of the first system 10 apparatus, and the difference according to the code frequency and the next-order signal possible signal specified in the first system central processing unit (CPU) unit 100 A first transmitter 200 performing a signal frequency output and a modulation output of an orbital frequency; Receives the signal transmitted through the field rail and electrically insulates it, passes the bandpass filter that passes the corresponding frequency band, stabilizes the level through the level stabilizer, and then the received signal is the same as the transmitted signal. A first receiver 300 which analyzes whether the recognition is identical to the manifest code and displays the train occupancy and abnormality of the track to the outside using the track relay; 2, which receives the external signal manifest code condition, checks the overall state of the second system 20, stores the transmission / reception level, outputs possible signal information according to the train detection, and detects the transmission level. A system central processing unit (CPU) unit 600; Pulse Width Modulation by generating signals such as track frequency, on-board signal frequency output, code frequency, etc. A transmission central processing unit (CPU) unit for transmitting a command to the PWM unit and receiving a signal output from the pulse width modulation unit through the input unit and the output unit to determine whether there is an output error; The CPU unit detects the information, pulses the amplitude modulated signal required for the track, and then outputs the pulse width modulated PWM to amplify and output the required level, and the impedance matching unit 400. The output level receiving unit delivers the output signal to the transmitting central processing unit (CPU) so as to determine whether the transmission output is abnormal by rectifying the signal, and the power supply unit supplying the power necessary for the operation of the transmitting unit. Bin Set the frequency, set the transmission level, make the communication connection of the system state of the first system 10 device, and the difference according to the code frequency and the next-order signal available signal specified by the second CPU unit 600 A two-stage transmitter 700 for modulating the signal frequency output and the orbital frequency; Receives the signal transmitted through the field rail and electrically insulates it, passes the bandpass filter that passes the corresponding frequency band, stabilizes the level through the level stabilizer, and then the received signal is the same as the transmitted signal. A two-receiver unit 800 which analyzes whether the recognition is identical to the manifest code, and displays the train occupancy and abnormality of the track to the outside using the track relay; An impedance matching unit 400 which insulates the signals transmitted from the first transmitter 200 and the second transmitter 700 from the field impedance bond and compensates for the capacitance; The information (orbital frequency, onboard signal frequency, code frequency) transmitted from the first CPU (CPU) unit 100 and the second CPU (500) is displayed on the LCD of the front panel. A display unit 500 for displaying, receiving, rectifying, and filtering the transmission level and the reception level, and displaying the same on a liquid crystal display (LCD); AF track circuit device, characterized in that configured. The method of claim 7, wherein The input and output unit, An RS-232 communication unit 211 which transmits a transfer signal when an abnormality occurs by transmitting and receiving information with the transmission unit 700 of the other system; The central processing unit (CPU) unit 100 transmits / receives a code frequency and a transmission level value, transmits a transmission level value to the receiving unit 300, and receives information whether or not there is an abnormality in the reception level. RS-422 communication unit 212 for the; An optical-insulating device unit 221 electrically insulating the signal received from the outside; A system status display unit 222 for displaying the system selection and the system status of the system; A light emitting device (LED) display unit 223 for displaying the state of the transmitter 200 on the front panel; AF track circuit device, characterized in that configured. The method of claim 7, wherein The transmission central processing unit (CPU) unit, After receiving the information transmitted from the CPU unit 100 through the RS-422 communication unit 212, and transmits the received code frequency information to the pulse width modulation (PWM) unit, the input and output unit Analyze the information input through the optical-insulation unit 221 to determine whether there is an error, and receives the information of the frequency setting unit 261 for setting the frequency of the equipment input from the pulse width modulation (PWM) unit, the pulse After receiving the transmission output output from the width modulation part (PWM) and comparing it to determine whether the transmission output of the pulse width modulation part is normal, and serves to control the output only when the normal, while the frequency setting part 261 A central processing unit (CPU) 231 having a function of transmitting information to the central processing unit (CPU) unit 100 through the RS-422 communication unit 222; A watchdog unit 235 for determining an error of the internal system and outputting a CPU reset signal when an error occurs; A reset unit 236 for monitoring the internal system and outputting a signal for resetting the central processing unit (CPU) 231 when an abnormal situation that is determined to be an error of the internal system occurs; A reference voltage unit 237 which serves to set a reference voltage so that the transmitting central processing unit (CPU) does not reset before the power supply of the rectifier reaches the normal operating voltage of the semiconductor at the initial power input; AF track circuit device, characterized in that configured. The method of claim 7, wherein The pulse width modulation (PWM) unit, A pulse width modulation (PWM) generator 251 which modulates and outputs the information received from the transmitting central processing unit (CPU) via the internal data bus and the orbital frequency set by the frequency setting unit 261; Modulates the orbital frequency, code frequency and on-board signal frequency, sets the level accordingly, and generates a pulse width modulated signal according to a program algorithm. Pulse width modulated (PWM) pattern storage (Read Only Memory: ROM) unit 252 and ; A pulse width modulated (PWM) output unit 253 for amplifying and outputting the pulse width modulated signal by using a whole cross-section; A frequency setting unit 261 for setting an orbital frequency required by the pulse width modulation (PWM) unit; An output level setting section 262 for setting a pulse width modulation (PWM) signal transmission level in the pulse width modulation (PWM) generating section; AF track circuit device, characterized in that configured. The method of claim 7, wherein The output level receiving unit, A signal conversion (ADC) unit 271 for extracting a signal output from the tuning circuit of the impedance matching unit 400, converting the extracted analog signal into a digital signal, and transmitting the digital signal to a monitoring central processing unit (CPU); A rectifier 272 for rectifying the signal passing through the low pass filter; A final transmission level and frequency modulator 273 for rectifying the output signal of the impedance matching unit 400 and transferring the output signal to a transmission central processing unit (CPU) so as to determine whether the transmission output is abnormal; AF track circuit device, characterized in that configured. It receives the external signal manifest code condition, checks the overall status of the first system (10), stores the transmission and reception levels, outputs the possible signal information for the train detection, and detects the transmission level. A first system processing unit (CPU) unit 100; Set the orbital frequency of the system, set the transmission level, make the communication connection of the system state of the first system 10 device, and the code frequency and the next-order signal capable signal designated by the first system central processing unit (CPU) unit 100 A first transmitter 200 for performing on-vehicle signal frequency output and modulated output of the orbital frequency according to the first and second signals; Receiving input unit for receiving the orbital signal output from the transmitter 200 to the orbit through the impedance bond and transmits the reception level to the receiving central processing unit (CPU), and inputs only the set orbital frequency by detecting and filtering the level of the input signal Receiving level detection unit, receiving central processing unit (CPU) for receiving information from the reception level detection unit and the output signal from the transmission unit 200, and detects the error of the receiver itself, and displays the status of the receiver 300 to the outside A light emitting element (LED) display unit 361, an orbital relay unit for displaying the track occupancy state of the train according to the received data, a communication unit for transmitting information of the orbital reception data, and a power supply for operation of the device. The power supply part to be supplied is a detail component, and the band pass that receives the signal transmitted through the field rails and electrically insulates it and passes the corresponding frequency band. After passing through the filter, the level is stabilized through the level stabilization unit, and then the received signal is analyzed whether the signal is the same as the transmitted signal and whether the same code is present. A first receiver 300 to be displayed externally by using; 2, which receives the external signal manifest code condition, checks the overall state of the second system 20, stores the transmission / reception level, outputs possible signal information according to the train detection, and detects the transmission level. A system central processing unit (CPU) unit 600; Set the orbital frequency of the system, set the transmission level, make the communication connection of the system state of the first system 10 device, and the code frequency and the next-order signal capable signal designated by the second CPU unit 600. A two-stage transmitter 700 for modulating the on-vehicle signal frequency output and the orbital frequency according to the present invention; Receiving input unit for receiving the orbital signal output from the transmitter 200 to the orbit through the impedance bond and transmits the reception level to the receiving central processing unit (CPU), and inputs only the set orbital frequency by detecting and filtering the level of the input signal Receiving level detection unit, receiving central processing unit (CPU) for receiving information from the reception level detection unit and the output signal from the transmission unit 200, and detects the error of the receiver itself, and displays the status of the receiver 300 to the outside A light emitting element (LED) display unit 361, an orbital relay unit for displaying the track occupancy state of the train according to the received data, a communication unit for transmitting information of the orbital reception data, and a power supply for operation of the device. The power supply part to be supplied is a detail component, and the band pass that receives the signal transmitted through the field rails and electrically insulates it and passes the corresponding frequency band. After passing through the filter, the level is stabilized through the level stabilization unit, and then the received signal is analyzed whether the signal is the same as the transmitted signal and whether the same code is present. A two-receiving unit 800 to be displayed to the outside by using; An impedance matching unit 400 which insulates the signals transmitted from the first transmitter 200 and the second transmitter 700 from the field impedance bond and compensates for the capacitance; The information (orbital frequency, onboard signal frequency, code frequency) transmitted from the first CPU (CPU) unit 100 and the second CPU (500) is displayed on the LCD of the front panel. A display unit 500 for displaying, receiving, rectifying, and filtering the transmission level and the reception level, and displaying the same on a liquid crystal display (LCD); AF track circuit device, characterized in that configured. The method of claim 12, The receiving input unit, An impedance matching unit 311 which electrically insulates the track signal output from the transmitter 200 to the track through an impedance bond and electrically insulates the impedance signal; A band pass filter unit 312 for filtering the impedance matched signal according to a specified frequency band; A level stabilizer 313 for removing noise from the filtered signal and stabilizing the level; A level detecting unit 314 for transmitting a reception level to the monitoring unit 500; AF track circuit device, characterized in that configured. The method of claim 12, The reception level detection unit, A low pass filter 331 for removing the carrier frequency by using the low pass filter for the stabilized signal and extracting only the signal frequency; A comparator 332 for generating the extracted signal into a shaped square wave; An interface unit 333 for converting the shaped square wave into a level suitable for a CPU; A rectifier 334 which receives the signal passing through the low pass filter 331 and rectifies the signal and transmits the signal to the CPU 351; AF track circuit device, characterized in that configured. The method of claim 12, The receiving central processing unit (CPU), When the signal converted by the reception level detecting unit 330 is provided as an interrupt input, the orbital relay is analyzed by comparing the input signal with the level setting value and the present code provided by the transmitter 200 through the RS-422 communication unit 371. A receiving central processing unit (CPU) 351 for outputting negatively; A watchdog unit 352 for determining an error of an internal system and outputting a CPU reset signal when an error occurs; A reset unit 353 for monitoring the internal system and outputting a signal for resetting the central processing unit (CPU) 231 when an abnormal situation that is determined to be an error of the internal system occurs; A reference voltage unit 354 which serves to set a reference voltage so that the receiving central processing unit (CPU) 351 is not reset before the power supply of the rectifier is before the normal operating voltage of the semiconductor upon initial power input; A system status display unit 355 for displaying the system selection and the system status of the system; AF track circuit device, characterized in that configured. The method of claim 12, The track relay unit, An optical-isolator unit 343 for electrical isolation from the receiving central processing unit (CPU) 351; An amplifier 342 for amplifying the signal passing through the optical-insulator unit 343; An orbital relay output section 341 for operating the orbital relay through an amplifying section; AF track circuit device, characterized in that configured. It receives the external signal manifest code condition, checks the overall status of the first system (10), stores the transmission and reception levels, outputs the possible signal information for the train detection, and detects the transmission level. A first system processing unit (CPU) unit 100; Set the orbital frequency of the system, set the transmission level, make the communication connection of the system state of the first system 10 device, and the code frequency and the next-order signal capable signal designated by the first system central processing unit (CPU) unit 100 A first transmitter 200 for performing on-vehicle signal frequency output and modulated output of the orbital frequency according to the first and second signals; Receives the signal transmitted through the field rail and electrically insulates it, passes the bandpass filter that passes the corresponding frequency band, stabilizes the level through the level stabilizer, and then the received signal is the same as the transmitted signal. A first receiver 300 which analyzes whether the recognition is identical to the manifest code and displays the train occupancy and abnormality of the track to the outside using the track relay; 2, which receives the external signal manifest code condition, checks the overall state of the second system 20, stores the transmission / reception level, outputs possible signal information according to the train detection, and detects the transmission level. A system central processing unit (CPU) unit 600; Set the orbital frequency of the system, set the transmission level, make the communication connection of the system state of the first system 10 device, and the code frequency and the next-order signal capable signal designated by the second CPU unit 600. A two-stage transmitter 700 for modulating the on-vehicle signal frequency output and the orbital frequency according to the present invention; Receives the signal transmitted through the field rail and electrically insulates it, passes the bandpass filter that passes the corresponding frequency band, stabilizes the level through the level stabilizer, and then the received signal is the same as the transmitted signal. A two-receiver unit 800 which analyzes whether the recognition is identical to the manifest code, and displays the train occupancy and abnormality of the track to the outside using the track relay; Impedance matching of the signal output from the pulse width modulation (PWM) output unit 253 of the transmitter 200 and the impedance bond installed in the field rail and the impedance, and the capacitance of the cable connected to the impedance bond Insulating the tuning circuit unit 420 to compensate and output to the track, the matching transformer unit 440 for matching the transmission output voltage passing through the tuning circuit unit 420, and the output signal of the matching transformer unit is electrically insulated, The rectifier 430 converts the DC value so that the transmitter 200 and the central processing unit (CPU) 100 can receive the signal, and converts the signal transmitted to the rectifier 430 into a shaped square wave. The comparator 450 transmits to the transmitter 200 and the central processing unit (CPU) 100 so as to compare the level value output from the 200, and the driving voltage (24V) and the signal control required for the impedance matching unit. Required voltage (+ 5V,- 5V) as a detailed component, and the impedance matching function to insulate the signal transmitted from the first transmitter 200 and the second transmitter 700 from the field impedance bond and to compensate for the capacitance Section 400; The information (orbital frequency, onboard signal frequency, code frequency) transmitted from the first CPU (CPU) unit 100 and the second CPU (500) is displayed on the LCD of the front panel. A display unit 500 for displaying, receiving, rectifying, and filtering the transmission level and the reception level, and displaying the same on a liquid crystal display (LCD); AF track circuit device, characterized in that configured. It receives the external signal manifest code condition, checks the overall status of the first system (10), stores the transmission and reception levels, outputs the possible signal information for the train detection, and detects the transmission level. A first system processing unit (CPU) unit 100; Set the orbital frequency of the system, set the transmission level, make the communication connection of the system state of the first system 10 device, and the code frequency and the next-order signal capable signal designated by the first system central processing unit (CPU) unit 100 A first transmitter 200 for performing on-vehicle signal frequency output and modulated output of the orbital frequency according to the first and second signals; Receives the signal transmitted through the field rail and electrically insulates it, passes the bandpass filter that passes the corresponding frequency band, stabilizes the level through the level stabilizer, and then the received signal is the same as the transmitted signal. A first receiver 300 which analyzes whether the recognition is identical to the manifest code and displays the train occupancy and abnormality of the track to the outside using the track relay; 2, which receives the external signal manifest code condition, checks the overall state of the second system 20, stores the transmission / reception level, outputs possible signal information according to the train detection, and detects the transmission level. A system central processing unit (CPU) unit 600; Set the orbital frequency of the system, set the transmission level, make the communication connection of the system state of the first system 10 device, and the code frequency and the next-order signal capable signal designated by the second CPU unit 600. A two-stage transmitter 700 for modulating the on-vehicle signal frequency output and the orbital frequency according to the present invention; Receives the signal transmitted through the field rail and electrically insulates it, passes the bandpass filter that passes the corresponding frequency band, stabilizes the level through the level stabilizer, and then the received signal is the same as the transmitted signal. A two-receiver unit 800 which analyzes whether the recognition is identical to the manifest code, and displays the train occupancy and abnormality of the track to the outside using the track relay; An impedance matching unit 400 which insulates the signals transmitted from the first transmitter 200 and the second transmitter 700 from the field impedance bond and compensates for the capacitance; A signal input unit 510 for selecting a commercial system and an automatic switching method, and a transmission output level and a manifest code are extracted from the tuning circuit 420 of the impedance matching unit 400, and the matching unit 311 of the reception input unit 310 is extracted. A signal conversion (ADC) detector 530 which detects a reception level and a manifest code, converts the detected analog data into digital, and transmits the detected analog data digitally to a monitoring central processing unit (CPU) 550 in a serial manner. (ADC) Receives the information of the detection unit and stores the information in the storage device, and outputs the stored information using the liquid crystal display (LCD) of the external display unit 580, the information through the communication unit 570 to the external display unit 580 A monitoring central processing unit (CPU) 550 having a function of displaying a light emitting element (LED) on the control panel, a communication unit 570 having a function of transmitting information with the central processing unit (CPU) unit 100, and Liquid crystal table for visual confirmation of levels and information An external display unit 580 displayed by a sight glass (LCD) and a light emitting device (LED), and a power supply unit 590 for supplying power for operation of the device are detailed components. 100) and information (orbital frequency, on-board signal frequency, code frequency) transmitted from the CPU 500, and receive and transmit level and receive level After rectifying and filtering, to the monitoring unit 500 that serves to display on the liquid crystal display (LCD); AF track circuit device, characterized in that configured. The method of claim 18, The signal input unit 510, A selection mode unit 511 for arbitrarily selecting a first device 10 and a second device 20 by a user; An automatic mode unit 512 for automatically implementing the system selection to automatically switch to the opposite system when an error occurs in the system in use; AF track circuit device, characterized in that configured The method of claim 18, The signal conversion (ADC) detection unit 530, The transmission output level and the manifestation code are extracted from the tuning circuit 420 of the impedance matching unit 400, and the matching transformer 314 is detected by detecting the reception level and the manifest code by the matching section 311 of the reception input unit 310. Low pass filter units 531 and 534 for electrically removing the signal and then removing the carrier frequency using a low pass filter and extracting only the signal frequency; Comparators 532 and 535 for converting the extracted signal into a shaped square wave and converting the extracted signal into a level suitable for a central processing unit (CPU); Rectifiers 533 and 536 which receive signals passing through the low pass filter units 531 and 534 and rectify the signals; The manifest code is transmitted to the monitoring central processing unit (CPU) 551, and the signal passed through the low pass filter unit 531 and 534 is received through the rectifiers 533 and 536, and then detected. A signal conversion (ADC) unit 544 for converting the data into digital and transmitting the data to the monitoring central processing unit (CPU) 551 in a serial manner; AF track circuit device, characterized in that configured. The method of claim 18, The monitoring central processing unit (CPU) 550, A monitoring central processing unit (CPU) 551 which controls the operation status of the monitoring device and controls the user to grasp the operation status of the device by outputting and displaying the operation status of the poultry devices 10 and 20 to the display unit. )Wow; A storage unit 552 for storing a transmission / reception level detected by the signal conversion (ADC) detection unit 530; A watchdog unit 555 which determines an error of the internal system and outputs a CPU reset signal when an error occurs; A reset unit 556 for monitoring the internal system and outputting a signal for resetting the central processing unit (CPU) 551 when an abnormal situation that is determined to be an error of the internal system is reset; A reference voltage unit 557 which serves to set a reference voltage so that the transmitting central processing unit (CPU) 230 does not reset before the power supply of the rectifier reaches the normal operating voltage of the semiconductor at the initial power input; AF track circuit device, characterized in that configured. The method of claim 18, The external display unit 580, A decoder unit 581 for decoding an operation signal of the apparatus; Buffer units 582 and 584 for buffering signals output from the decoder unit; A liquid crystal display window (LCD) display units 583 and 585 for outputting a signal output through the buffer unit using a liquid crystal display window (LCD); AF track circuit device, characterized in that configured.

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