CN108761477A - A kind of contactless catenary's parameters harvester, measuring system and its measurement method using digital laser technology - Google Patents

Abstract

The invention relates to the technical field of track catenary detection equipment, and discloses a non-contact catenary parameter acquisition device, a measurement system and a measurement method using digital laser technology. Through the invention, without stopping the data collection vehicle, on the one hand, according to the recognition result of the catenary pole and the real-time driving distance, the pole number data of the nearest catenary pole can be automatically determined; on the other hand, it can also be combined with laser scanning meter, gauge sensor and inclination sensor, calculate and obtain the catenary parameters including the pull-out value of the catenary wire and the height of the wire, etc., and can automatically store and display data and find the fault location through data overrun detection to further improve detection efficiency, and save time and reduce labor costs. In addition, through the built-in measurement data playback software system, application purposes such as data playback, data analysis, and data correction of measurement data can also be realized to ensure the automation of later data analysis.

Description

A non-contact catenary parameter acquisition device and measuring device using digital laser technology Measuring system and its measuring method

technical field

The invention belongs to the technical field of track catenary detection equipment, and in particular relates to a non-contact catenary parameter acquisition device, a measurement system and a measurement method using digital laser technology.

Background technique

In recent years, China's railways have developed rapidly, and safety is one of the most important indicators to measure the quality of comprehensive operation in the production process of China's railway transportation. Net (it is a special form of transmission line erected along the railway line to supply power to electric locomotives, mainly composed of contact suspension, support device, positioning device, pillar rod and fixed foundation, among which, contact suspension includes contact wire, suspension Strings, catenary cables and connecting parts and insulators, the contact suspension is erected on the pillar through the support device, and its function is to transmit the electric energy obtained from the traction substation to the electric locomotive) for multi-parameter detection, such as for the wire pull of the catenary Output value (including non-support), conductor height, catenary cable (distance from rail surface), anchor section joint, suspension string, span, gauge, outer rail superelevation, side limit, conductor slope (between positioning and positioning) height difference), height difference (the height difference between the positioning and the hanging string, and the height difference between the hanging string and the hanging string), the line fork (the height difference between the two wires at the horizontal distance of 500mm and 800mm from the two ends of the line fork), the hanging This problem is especially obvious in the detection of parameters such as chord length and rod number.

At present, portable catenary detection equipment based on point laser and infrared technology (such as portable gauge gauge and other catenary measuring instruments) is widely used in China to manually measure multiple parameters of the catenary, that is, the portable catenary detection equipment is moved to the catenary. When the position of the strut pole is used, the multi-parameter measurement of the catenary is carried out according to the following steps: (1) first determine the pole number of the strut pole; (2) squat down to place the catenary measuring instrument, and adjust the position of the measuring instrument according to the position of the locator; ( 3) After placing the measuring instrument, it is necessary to adjust the measuring lens so that the detection spot hits the contact line; (4) Click OK on the measuring instrument to read out the data. This will waste a lot of time, have a great impact on the progress of the project, and delay the construction period. At the same time, because the railway maintenance is at the skylight point, the time of the skylight point is short, relying on traditional detection methods will further lead to long time-consuming measurement of catenary parameters, low efficiency and difficulty in adapting to the needs of social development, especially with the rapid development of my country's railway industry, The mileage continues to increase, and the workload of new line inspection and daily maintenance of railway construction has increased sharply.

Contents of the invention

In order to solve the problems of poor automation, low efficiency and time-wasting of data detection existing in the prior art, the purpose of the present invention is to provide a non-contact catenary parameter acquisition device, measurement system and measurement method using digital laser technology .

The technical scheme adopted in the present invention is:

A non-contact catenary parameter acquisition device using digital laser technology, comprising a data acquisition vehicle, a first laser distance sensor, a first differential circuit unit, a first single-chip processing circuit unit, a pulse encoder, a clock pulse generation circuit unit, The movement direction discrimination circuit unit, the reversible counting circuit unit, the second single-chip processing circuit unit and the output interface circuit unit, wherein the number of the first laser distance sensors is two and are respectively installed on two sides of the walking direction of the data acquisition vehicle. side, and make their laser transmitting and receiving directions vertically upward respectively, and the pulse coder is installed on the walking wheel shaft of the data acquisition vehicle;

The switching value output terminal of the first laser distance sensor is electrically connected to the input terminal of the first differential circuit unit, and the output terminal of the first differential circuit unit is electrically connected to the input terminal of the first single-chip processing circuit unit to form a Catenary pole identification result data acquisition branch;

The A-phase signal output end of the pulse encoder, the B-phase signal output end of the pulse encoder and the output end of the clock pulse generation circuit unit are respectively electrically connected to the three input ends of the motion direction discrimination circuit unit, The output end of the moving direction discrimination circuit unit is electrically connected to the input end of the reversible counting circuit unit, and the output end of the reversible counting circuit unit is electrically connected to the input end of the second single-chip processing circuit unit to form a driving data collection branch. road;

The output end of the first single-chip processing circuit unit and the output end of the second single-chip processing circuit unit are respectively electrically connected to the output interface circuit unit.

Optimally, it also includes a second laser distance sensor, an A/D sampling circuit unit, a digital filter circuit unit and an OR gate circuit unit, wherein the number of the second laser distance sensor is two and is also respectively installed in the data Collect the two sides of the vehicle's walking direction, and make their laser sending and receiving directions vertically upward;

The analog output end of the second laser distance sensor is electrically connected to the input end of the A/D sampling circuit unit, and the output end of the A/D sampling circuit unit is electrically connected to the input end of the digital filter circuit unit, so The output end of the digital filtering circuit unit and the output end of the first differential circuit unit are respectively electrically connected to the two input ends of the OR circuit unit, and the output end of the OR circuit unit is electrically connected to the first single-chip microcomputer Process the input of the circuit unit.

Further optimized, it also includes a manual button and a second differential circuit unit, wherein the manual button is installed on the data collection vehicle;

The output end of the manual key is electrically connected to the input end of the second differential circuit unit, and the output end of the second differential circuit unit is electrically connected to the third input end of the OR gate circuit unit.

Optimally, it also includes a speed counting circuit unit and a third single-chip processing circuit unit, wherein the output terminal of the third single-chip processing circuit unit is electrically connected to the output interface circuit unit;

The output end of the moving direction discrimination circuit unit is also electrically connected to the input end of the speed counting circuit unit, and the output end of the speed counting circuit unit is electrically connected to the input end of the third single-chip processing circuit unit to form a vehicle speed data collection branch road.

Optimally, the movement direction discrimination circuit unit includes a first resistor R1, a second resistor R2, a first diode D1, a second diode D2, a third diode D3, a fourth diode D4, a first A NAND gate U1, a second NAND gate U2, a third NAND gate U3, the A-phase input terminal Pin_A for electrically connecting the A-phase signal output terminal, and the B-phase input terminal for electrically connecting the B-phase signal output terminal The input terminal Pin_B and the clock pulse input terminal Time for electrically connecting the output terminal of the clock pulse generating circuit unit;

The phase A input terminal Pin_A is electrically connected to the first terminal of the first resistor R1, the second terminal of the first resistor R1 is electrically connected to the first input terminal of the first NAND gate U1, and the first The second input end of the NAND gate U1 is electrically connected to the clock pulse input end Time;

The B-phase input terminal Pin_B is electrically connected to the first terminal of the second resistor R2, the second terminal of the second resistor R2 is electrically connected to the first input terminal of the second NAND gate U2, and the second The second output end of the NAND gate U2 is electrically connected to the first end of the third resistor R3, and the second end of the third resistor R3 is electrically connected to a DC voltage;

The output terminal of the first NAND gate U1 and the output terminal of the second NAND gate U2 are respectively electrically connected to the two input terminals of the third NAND gate U3, and the output of the third NAND gate U3 terminal as the output terminal Pout of the motion direction discrimination circuit unit;

The first input terminal of the second NAND gate U2 is also electrically connected to the cathode of the first diode D1 and the anode of the second diode D2, and the output terminal of the third NAND gate U3 is also respectively connected to the anode of the second diode D2. The cathode of the third diode D3 is electrically connected to the anode of the fourth diode D4, the anode of the first diode D1 and the anode of the third diode D3 are respectively grounded, and the The cathode of the second diode D2 and the cathode of the fourth diode D4 are respectively electrically connected to the DC voltage.

Further optimized, there is a direction discrimination starting branch connected in series between the second terminal of the first resistor R1 and the first input terminal of the first NAND gate U1, wherein the direction discrimination starting branch includes The fourth resistor R4, the fifth resistor R5, the fifth diode D5, the sixth diode D6, the capacitor C1, the transistor Q1, the fourth NAND gate U4 and the start control input terminal Pin_SY;

The second terminal of the first resistor R1 is electrically connected to the first input terminal of the fourth NAND gate U4, and the startup control input terminal Pin_SY is electrically connected to the first terminal of the three resistors R3, the fifth The cathode of the diode D5 and the second input terminal of the fourth NAND gate U4;

The output end of the fourth NAND gate U4 is electrically connected to the anode of the fifth diode D5, the first end of the fourth resistor R4 and the base of the triode Q1, and the emitter of the triode Q1 electrically connected to the anode of the sixth diode D6, and the collector of the triode Q1 is electrically connected to the first end of the fifth resistor R5 and the first input end of the first NAND gate U1;

The second end of the fourth resistor R4, the second end of the fifth resistor R5, and the first end of the capacitor C1 are respectively electrically connected to the DC voltage, and the second end of the capacitor C1 is connected to the sixth The cathodes of the diodes D6 are respectively grounded.

Another kind of technical scheme that the present invention adopts is:

A non-contact catenary parameter measurement system using digital laser technology, including a data center server, human-computer interaction equipment and a non-contact catenary parameter acquisition device using digital laser technology as described above, wherein the data The input end of the central server is electrically connected to the output interface circuit unit in the non-contact catenary parameter acquisition device, and the output end of the data center server is electrically connected to the human-computer interaction device;

The data center server is built with a measuring software system including a catenary pole recognition result data interface, a driving data interface, a line database, a pole positioning module and a pole number determination module;

The catenary pole identification result data interface is used to import the catenary pole identification result data from the first single-chip processing circuit unit;

The distance data interface is used to import the distance data from the second single-chip processing circuit unit;

The route database is used to store route data including route pole numbers, route names, route intervals, route support pole numbers, lead work areas where the routes are located, and/or responsible units to which the routes belong;

The strut pole positioning module is used to, after receiving the real-time catenary strut pole recognition result data from the catenary strut pole recognition result data interface and the real-time driving data from the driving distance data interface, firstly according to the real-time driving distance data, calculating the real-time moving distance from the current data collection vehicle position to the previous determined pole position, if the real-time moving distance is in the range of S-x～S+x, and the real-time catenary pole identification result data indicates that the current identification has pillar pole, it is determined that the pillar pole is an effective pillar pole, and then the pole number data of the effective pole pole is determined according to the pole number data of the previously determined pole pole and the line data from the route database, wherein the pole number The data includes the line support pole number of the corresponding support pole and the line name of the line to which it belongs, the line section, the leading area where the line is located and/or the responsible unit of the line. S is the design spacing of the catenary support poles, and x is the offset constant.

Optimally, it also includes a laser scanner, a gauge sensor and an inclination sensor installed on the data collection vehicle, wherein the laser scanning surface of the laser scanner is located above the data collection vehicle and connected to the data collection vehicle The direction of travel is vertical;

The output ends of the laser scanner, the gauge sensor and the inclination sensor are respectively electrically connected to the input ends of the data center server;

The measurement software system in the data center server also includes a laser scanner interface, a gauge sensor interface, an inclination sensor interface, a coordinate system module, a calibration module, a compensation module, an overrun judgment module, a data storage module, and a display interface driver module;

The laser scanner interface is used to import laser scanning data from the laser scanner;

The gauge sensor interface is used to import gauge measurement data from the gauge sensor;

The inclination sensor interface is used to import the inclination measurement data from the inclination sensor;

The coordinate system module is used to convert the real-time scan data from polar coordinates to rectangular coordinates after receiving the real-time scan data from the laser scanner, and then classify the real-time scan data according to whether they belong to the same obstacle, and according to The number of continuous data points of obstacles filters out the interference data, and finally obtains the real-time wire pull-out value and real-time wire height of the catenary wire according to the remaining real-time scanning data about the catenary wire;

The calibration module is used to calculate the original error data generated by machining according to the automatic measurement value and the manual measurement value when calibrating the parameters;

The compensation module is used to respectively adjust the real-time conductor pull-out value and the real-time conductor height according to the real-time gauge measurement data from the gauge sensor, the real-time inclination measurement data from the inclination sensor and the original error data from the calibration module make corrections;

The overrun judging module is used to judge whether the real-time wire pull-out value and the real-time wire height are overrun, if it is judged overrun, then the nearest catenary pole will be determined by the pole positioning module as the fault zone pole;

The data storage module is used to bind and store the pole number data determined by the pillar pole positioning module with the compensated real-time wire pull-out value and real-time wire height;

The display interface driver module is used to drive the human-computer interaction device to output and display the latest real-time wire pull-out value, real-time wire height and pole number data, and/or output and display the real-time wire pull-out value and real-time wire pull-out value corresponding to the fault zone pole. Height and pole number data.

Further optimized, the data center server also has a built-in measurement data playback software system including a storage read-write module, a line manager, a waveform data model, a graphical interface module, a command control module and an operation stack module;

The storage read-write module is used to read and write historically measured pole number data and catenary parameters from the local data storage module and write the corrected catenary parameters into the local data storage module;

The line manager is used to manage the line data of several track lines, and corresponding to each track line, a curve manager dedicated to managing the line data of the track line is provided;

The waveform data model is used to convert the bar number data and catenary parameters to be output and displayed into output and displayed waveform images according to the prefabricated model;

The graphical interface module is used to display waveform images from the waveform data model, and to input operating instructions manually generated by the operator, wherein the operating instructions include correction instructions for catenary parameters and/or are used to adjust the waveform image display Content control instructions;

The command control module is used to modify the catenary parameters and/or adjust the display content of the waveform image according to the operation instructions from the graphical interface module;

The operation stack module is used to record all operation instructions and corresponding operation records.

Another kind of technical scheme that the present invention adopts is:

A method for measuring a non-contact catenary parameter measurement system using digital laser technology as described above, comprising the steps:

S101. Receive real-time scanning data from a laser scanner, and convert the real-time scanning data from polar coordinates to rectangular coordinates;

S102. Classify the real-time scanning data according to whether they belong to the same obstacle, and filter out the interference data according to the number of continuous data points of the obstacle, and the last remaining real-time scanning data is the scanning data about the catenary wire;

S103. Obtain the real-time wire pull-out value and the real-time wire height of the catenary wire according to the remaining real-time scanning data;

S104. Correct and compensate the real-time wire pull-out value and the real-time wire height according to the real-time gauge measurement data from the gauge sensor, the real-time inclination measurement data from the inclination sensor, and the original error data determined during calibration, respectively ;

S105. Determine whether the corresponding catenary wire is a catenary wire or a catenary cable according to the real-time wire height. If there are two contact wires, calculate the distance between the two contact wires according to the real-time wire pull-out value and the real-time wire height of the corresponding contact wire. The real-time parallel spacing and real-time height difference between them;

S106. Judging whether the real-time wire pull-out value, real-time wire height, real-time parallel spacing or real-time height difference exceeds the limit, if it is determined to be over the limit, then the nearest catenary pillar determined according to the real-time catenary pillar rod identification result data and real-time driving data The rod acts as a fault zone rod.

The beneficial effects of the present invention are:

(1) The invention provides a new type of acquisition device that can automatically collect multiple parameters of the catenary, that is, without stopping the data collection vehicle, on the one hand, it can use the catenary pillar rod identification result data collection branch to automatically collect The catenary pole identification result used to determine the catenary pole number, on the other hand, can identify the moving direction of the data collection vehicle, and use the driving data collection branch to further obtain the real-time driving distance of the data collection vehicle, which can be output through the interface circuit The unit can output multiple parameters in a unified way, which can help to accurately determine the nearest catenary pole number together with the catenary pole identification results, which can not only greatly improve the detection efficiency, but also save time and reduce labor costs to meet the growing railway Acceptance of new lines and daily maintenance requirements of existing lines can also ensure timely positioning of newly discovered fault areas;

(2) By arranging the OR gate circuit unit in the new acquisition device, it is compatible to obtain the identification results of catenary poles based on switch value detection methods, analog value detection methods, and manual methods, so as to meet different usage habits and expand the application scope;

(3) The present invention also provides a new type of measurement system and its measurement method that can automatically collect multiple parameters of the catenary. On the one hand, it can automatically determine the closest catenary support according to the identification results of the catenary support pole and the real-time driving distance The pole number data of the pole, the other party can also combine the laser scanner, gauge sensor and inclination sensor to calculate and obtain the catenary parameters including the pull-out value of the catenary wire and the height of the wire, and can automatically perform data storage, data display and Find the fault location through data overrun detection, further improve detection efficiency, save time and reduce labor costs;

(5) Through the built-in measurement data playback software system in the new measurement system, it can also realize the application purposes of data playback, data analysis and data correction of the measurement data, ensuring the automation of later data analysis;

(6) The acquisition device and measurement system also have the advantages of safety and reliability, high acquisition accuracy, easy debugging, simple circuit structure and low cost, and are convenient for practical promotion and application.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a schematic structural diagram of a data collection vehicle provided by the present invention.

Fig. 2 is a schematic diagram of the circuit structure of the first non-contact catenary parameter acquisition device provided by the present invention.

Fig. 3 is a circuit diagram of the motion direction discrimination circuit unit provided by the present invention.

Fig. 4 is a schematic diagram of the first waveform of each node when the data collection vehicle is moving in the forward direction provided by the present invention.

Fig. 5 is a schematic diagram of the first waveform of each node when the data collection vehicle is traveling in the reverse direction provided by the present invention.

Fig. 6 is a schematic diagram of comparison of waveforms at the output end of the motion direction discrimination circuit unit provided by the present invention and during forward/reverse travel within a unit time.

Fig. 7 is a schematic diagram of the second waveform of each node when the data collection vehicle is moving forward provided by the present invention.

Fig. 8 is a schematic diagram of the second waveform of each node when the data collection vehicle is traveling in the reverse direction provided by the present invention.

Fig. 9 is a schematic diagram of the circuit structure of the second non-contact catenary parameter acquisition device provided by the present invention.

Fig. 10 is a schematic diagram of the circuit structure of the non-contact catenary parameter measurement system provided by the present invention.

Fig. 11 is a schematic structural diagram of the measurement software system in the non-contact catenary parameter measurement system provided by the present invention.

Fig. 12 is a schematic structural diagram of the measurement data playback software system in the non-contact catenary parameter measurement system provided by the present invention.

Fig. 13 is an example diagram of a waveform image provided by the present invention.

In the above drawings: 1 - data collection vehicle; 2 - human-computer interaction equipment.

Detailed ways

The present invention will be further elaborated below in conjunction with the accompanying drawings and specific embodiments. It should be noted here that the descriptions of these embodiments are used to help understand the present invention, but are not intended to limit the present invention.

The term "and/or" in this article is just an association relationship describing associated objects, which means that there may be three relationships, for example, A and/or B, which can mean: A exists alone, B exists alone, and A and B exist simultaneously. In the three cases of B, the term "/and" in this article is to describe another associated object relationship, which means that there can be two relationships, for example, A/ and B, which can mean: there is A alone, and there are two cases of A and B alone , In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship.

Embodiment one

As shown in Figures 1 to 8, the first non-contact catenary parameter acquisition device provided in this embodiment includes a data acquisition vehicle, a first laser distance sensor, a first differential circuit unit, and a first single-chip processing circuit unit , a pulse encoder, a clock pulse generation circuit unit, a motion direction discrimination circuit unit, a reversible counting circuit unit, a second single-chip processing circuit unit and an output interface circuit unit, wherein the number of the first laser distance sensors is two and respectively Installed on both sides of the traveling direction of the data acquisition vehicle, and make their laser transmitting and receiving directions vertically upward respectively, the pulse encoder is installed on the walking wheel shaft of the data acquisition vehicle.

As shown in Figure 1, in the structure of the first kind of non-contact catenary parameter acquisition device, the data acquisition vehicle 1 is a mobile vehicle that can walk on the track, so as to be used as the mobile carrier of the aforementioned other structures to ensure During the forward/reverse walking process, other structures mentioned above can be used to automatically collect the catenary parameters at the location; the data collection vehicle 1 can be but not limited to a trolley or a small vehicle in other forms of movement. As shown in FIG. 1 , the data acquisition vehicle is preferably a T-frame vehicle, which is beneficial to eliminate measurement errors caused by shaking and shaking of the vehicle body.

The switching value output terminal of the first laser distance sensor is electrically connected to the input terminal of the first differential circuit unit, and the output terminal of the first differential circuit unit is electrically connected to the input terminal of the first single-chip processing circuit unit to form a Catenary strut rod identification result data acquisition branch.

As shown in Figure 2, in the structure of the data acquisition branch of the catenary pole identification result, the first laser distance sensor is used to detect the distance directly above the track by using laser ranging technology during the travel of the data acquisition vehicle. Within the effective detection distance (for example, within 5M), whether there is a locator (which is essentially a horizontal bar) installed on the catenary pole and used as an obstacle, and output at the switch output terminal when the locator is detected A high-level switching signal, otherwise a low-level switching signal is output; it can be, but not limited to, a medium-range laser distance sensor of the model DX35. The first differential circuit unit is used to convert the switch signal from the first laser distance sensor from a rectangular wave to a sharp pulse wave, so as to obtain a pulse signal representing pulse front information; it can be but not limited to adopt the existing Differential circuit or routinely modify the design of the existing differential circuit. The first single-chip processing circuit unit is used to adopt the existing routine program, and perform the following identification processing on the catenary strut according to the pulse signal: if a sharp pulse wave appears currently, it is determined that the current real-time catenary strut identification result data is Identify a strut pole (that is, it indicates that there is a catenary strut pole on the side of the track road), otherwise it is determined that the current real-time catenary strut pole identification result data is not identified as a strut pole (that is, it indicates that there is an open space on the track road side), so by collecting the aforementioned The catenary pole identification result data can facilitate subsequent further determination of the pole number data of the catenary pole (the premise is that there is a need for line data and pre-manual determination of the pole number data of the initial catenary pole, and then it can be determined in sequence); It can, but is not limited to, use a MSP430F123 single-chip microcomputer chip and peripheral circuits.

The A-phase signal output end of the pulse encoder, the B-phase signal output end of the pulse encoder and the output end of the clock pulse generating circuit unit are respectively electrically connected to the three input ends of the motion direction discrimination circuit unit, The output end of the movement direction discrimination circuit unit is electrically connected to the input end of the reversible counting circuit unit, and the output end of the reversible counting circuit unit is electrically connected to the input end of the second single-chip processing circuit unit to form a driving data collection branch. road.

As shown in Figure 2, in the structure of the vehicle journey data acquisition branch, the pulse encoder is used to output a pair of phase difference of 90 degrees when the traveling wheel shaft rotates (i.e. the data acquisition vehicle is traveling in the forward or reverse direction). As shown in Figure 4 and 5, when the data collection vehicle is moving forward, the A-phase signal is 90 degrees ahead of the B-phase signal, and when the data collection vehicle is traveling in the reverse direction, the B-phase signal 90 degrees ahead relative to the phase A signal; the pulse encoder can be, but not limited to, a pulse encoder with a model number of SCH24. The clock pulse generating circuit unit is used for spontaneously generating a clock square wave signal with a certain frequency; it can be, but not limited to, adopt a clock pulse generating circuit based on the NE555 chip. The moving direction discriminating circuit unit is used to obtain different output waveforms representing forward or reverse travel by performing logic operations on the A-phase signal, B-phase signal and clock square wave signal. The reversible counting circuit unit is used for forward counting of the positive characteristic pulse in the output waveform or reverse counting of the reverse characteristic pulse in the output waveform, and transmits the real-time forward counting result or reverse counting result to the The second single-chip processing circuit unit can, but is not limited to, use an existing up-down counter to realize the forward/backward counting function. The second single-chip processing circuit unit is used to use the existing driving algorithm to perform forward driving calculation on the forward counting result or perform reverse driving calculation on the reverse counting result to obtain real-time driving data representing the current actual position, which can be but not limited to The MSP430F123 MCU chip and peripheral circuits are adopted.

The output end of the first single-chip processing circuit unit and the output end of the second single-chip processing circuit unit are respectively electrically connected to the output interface circuit unit.

As shown in Figure 2, the output interface circuit unit is used to connect to an external data server or computer equipment, so as to output the collected catenary pole recognition result data and real-time driving data etc. externally; it can be but not limited to RS232 Interface circuit unit. Therefore, it is beneficial to apply real-time driving and catenary pole identification results together to accurately determine the pole number and other data of the nearest catenary pole, which can not only greatly improve detection efficiency, but also save time and reduce labor costs to meet the growing demand The acceptance and daily maintenance requirements of new railway lines can also ensure the timely positioning of newly discovered fault areas.

Optimally, it also includes a speed counting circuit unit and a third single-chip processing circuit unit, wherein the output end of the third single-chip processing circuit unit is electrically connected to the output interface circuit unit; the output end of the motion direction discrimination circuit unit is also The input end of the speed counting circuit unit is electrically connected, and the output end of the speed counting circuit unit is electrically connected to the input end of the third single-chip processing circuit unit to form a vehicle speed data acquisition branch.

As shown in Figure 2, in the structure of the vehicle speed data acquisition branch, the speed counting circuit unit is used to perform real-time speed counting on the characteristic pulses in the output waveform per unit time, and then the real-time speed counting result It is transmitted to the third single-chip processing circuit unit, which may, but is not limited to, use a counter to realize the speed counting function. The third single-chip processing circuit unit is used to calculate the real-time speed of the real-time speed counting result by using the existing speed algorithm, and obtain the actual speed data representing the current actual speed. circuit. Therefore, by adding a vehicle speed data acquisition branch, the real-time vehicle speed of the data acquisition vehicle can also be obtained.

Optimally, as shown in FIG. 3 , the movement direction discrimination circuit unit includes a first resistor R1, a second resistor R2, a first diode D1, a second diode D2, a third diode D3, a fourth The diode D4, the first NAND gate U1, the second NAND gate U2, the third NAND gate U3, the A-phase input terminal Pin_A for electrically connecting the A-phase signal output terminal, and the A-phase input terminal Pin_A for electrically connecting the B-phase The B-phase input terminal Pin_B of the phase signal output terminal and the clock pulse input terminal Time for electrically connecting the output terminal of the clock pulse generating circuit unit; the A-phase input terminal Pin_A is electrically connected to the first end of the first resistor R1, so The second end of the first resistor R1 is electrically connected to the first input end of the first NAND gate U1, and the second input end of the first NAND gate U1 is electrically connected to the clock pulse input end Time; The B-phase input terminal Pin_B is electrically connected to the first terminal of the second resistor R2, the second terminal of the second resistor R2 is electrically connected to the first input terminal of the second NAND gate U2, and the second NAND The second output end of the gate U2 is electrically connected to the first end of the third resistor R3, and the second end of the third resistor R3 is electrically connected to a DC voltage; the output end of the first NAND gate U1 and the second NAND The output terminals of the NOT gate U2 are respectively electrically connected to the two input terminals of the third NAND gate U3, and the output terminals of the third NAND gate U3 are used as the output terminals Pout of the movement direction discrimination circuit unit; The first input terminal of the two NAND gate U2 is also electrically connected to the cathode of the first diode D1 and the anode of the second diode D2, and the output terminal of the third NAND gate U3 is also electrically connected to the The cathode of the third diode D3 and the anode of the fourth diode D4, the anode of the first diode D1 and the anode of the third diode D3 are respectively grounded, the second two The cathode of the diode D2 and the cathode of the fourth diode D4 are respectively electrically connected to the DC voltage.

As shown in FIG. 3 , in the specific circuit structure of the moving direction judging circuit unit, the DC voltage is provided by a power module, for example, +15V DC voltage. The working principle of the aforementioned motion direction discrimination circuit unit can be shown by the first waveform signal of each node when the data collection vehicle is running forward/reverse as shown in Figure 4-5, so that when the data collection vehicle is walking forward/reversely, Different unit waveforms as shown in Figure 6 are obtained at the output terminal Pout of the motion direction discrimination circuit unit, and then these two different unit waveforms can be used to represent different walking states, that is, taking Figure 6 as an example, the unit waveform can be used The digital information "11111110000011111000" of the data collection vehicle can be used to indicate that the data collection vehicle is in the forward walking state, and the digital signal of the unit waveform "11111100001111100000" can be used to represent that the data collection vehicle is in the forward walking state, thereby realizing the direction recognition function.

Further optimized, there is a direction discrimination starting branch connected in series between the second terminal of the first resistor R1 and the first input terminal of the first NAND gate U1, wherein the direction discrimination starting branch includes The fourth resistor R4, the fifth resistor R5, the fifth diode D5, the sixth diode D6, the capacitor C1, the transistor Q1, the fourth NAND gate U4 and the start control input terminal Pin_SY; the first resistor R1 The second terminal is electrically connected to the first input terminal of the fourth NAND gate U4, and the startup control input terminal Pin_SY is electrically connected to the first terminal of the three resistors R3, the cathode of the fifth diode D5 and the first terminal of the fifth diode D5 respectively. The second input end of the fourth NAND gate U4; the output end of the fourth NAND gate U4 is electrically connected to the anode of the fifth diode D5, the first end of the fourth resistor R4 and the The base of the triode Q1, the emitter of the triode Q1 is electrically connected to the anode of the sixth diode D6, and the collector of the triode Q1 is respectively electrically connected to the first end of the fifth resistor R5 and the The first input terminal of the first NAND gate U1; the second terminal of the fourth resistor R4, the second terminal of the fifth resistor R5 and the first terminal of the capacitor C1 are respectively electrically connected to the DC voltage, so The second end of the capacitor C1 and the cathode of the sixth diode D6 are respectively grounded.

As shown in Figure 3, in the circuit structure of the direction discrimination start branch, the start control input terminal Pin_SY is used to import control level signals (which can come from key switches or other controllers), and as shown in Figures 7 and 8 As shown, when a low level is input, the output terminal Pout of the motion direction discrimination circuit unit is always at a low level, and at this moment, the motion direction discrimination circuit unit is paused to start; and when a high level is input, the motion direction discrimination circuit unit The output terminal Pout of the circuit unit can obtain unit waveforms representing different walking states, and at this time, the movement direction discrimination circuit unit is activated. Therefore, through the direction discrimination starting branch, the function of start-stop control for the movement direction discrimination circuit unit can be played, which is convenient for simulation debugging.

Optimally, a protection circuit unit and a high-impedance level conversion circuit unit are serially connected in series between the output end of the pulse encoder and the input end of the motion direction determination circuit unit.

As shown in Figure 2, the protection circuit unit is used to prevent damage to the components in the circuit when the voltage signal is too large, and to improve the anti-interference ability; The optocoupler isolation circuit is designed with routine changes. The high-impedance level conversion circuit unit is used to amplify the input signal and match the input impedance with itself to achieve maximum power transmission and prevent the input signal from being consumed on its own impedance due to excessive weakness; it can be but not limited to The existing high-impedance level conversion circuit based on the common collector is adopted or the conventional modification design is performed on the existing high-impedance level conversion circuit based on the common collector. Therefore, through the foregoing design, port security and normal input of signals between the output end of the pulse encoder and the input end of the motion direction discrimination circuit unit can be ensured.

In summary, adopting the non-contact catenary parameter acquisition device provided in this embodiment has the following technical effects:

(1) This embodiment provides a new type of collection device that can automatically collect multiple parameters of the catenary, that is, without stopping the data collection vehicle, on the one hand, the data collection branch of the catenary pillar rod identification result can be used to automatically collect The catenary pole identification result used to determine the catenary pole number, on the other hand, can identify the moving direction of the data collection vehicle, and use the driving data collection branch to further obtain the real-time driving distance of the data collection vehicle, which can be output through the interface circuit The unit can output multiple parameters in a unified way, which can help to accurately determine the nearest catenary pole number together with the catenary pole identification results, which can not only greatly improve the detection efficiency, but also save time and reduce labor costs to meet the growing railway Acceptance of new lines and daily maintenance requirements can also ensure timely positioning of newly discovered fault areas;

(2) The acquisition device also has the advantages of safety and reliability, high acquisition accuracy, easy debugging, simple circuit structure and low cost, and is convenient for practical promotion and application.

Embodiment two

As shown in Figure 9, this embodiment is an extended technical solution of the first embodiment, and the circuit structure provided by it is different from that of the first embodiment in that it also includes a second laser distance sensor, an A/D sampling circuit unit, and a digital filter circuit unit and an OR gate circuit unit, wherein the number of the second laser distance sensors is two and are installed on both sides of the traveling direction of the data collection vehicle respectively, and their laser transmitting and receiving directions are respectively vertically upward; The analog output end of the second laser distance sensor is electrically connected to the input end of the A/D sampling circuit unit, and the output end of the A/D sampling circuit unit is electrically connected to the input end of the digital filter circuit unit, and the The output end of the digital filtering circuit unit and the output end of the first differential circuit unit are respectively electrically connected to the two input ends of the OR gate circuit unit, and the output end of the OR gate circuit unit is electrically connected to the first single-chip processing unit. The input terminal of the circuit unit.

As shown in Figure 9, the second laser distance sensor is used to output the analog distance signal from the location to the positioner above the track using laser ranging technology during the walking process of the data acquisition vehicle; Mid-range laser distance sensor for the DX35. The A/D sampling circuit unit is used to perform analog-to-digital sampling on the analog distance signal to obtain a digital distance signal; it can, but is not limited to, adopt the existing A/D analog-to-digital converter and peripheral circuits to realize the analog-to-digital sampling function . Described digital filtering circuit unit is used for carrying out digital filtering to aforementioned digital distance signal, obtains the digital distance signal of low noise; It can but not be limited to adopt existing DSP (Digital Signal Processor, digital signal processor) chip and peripheral circuit to realize digital filter function. The OR gate circuit unit is used for performing logical OR operations on the digital distance signal and the pulse signal, so that they can be compatible input to the first single-chip processing circuit unit. After the first single-chip processing circuit unit obtains the digital distance signal, it can first obtain the real-time distance from the data acquisition vehicle to the locator above the track according to the existing routine procedures. If the real-time distance is close to the installation parameters, then it is determined that the current real-time catenary pole The recognition result data is to identify a strut pole (that is, to indicate that there is a catenary strut pole on the side of the track road), otherwise it is determined that the current real-time catenary strut pole recognition result data is not identified as a strut pole (that is, to represent that there is an open space on the track roadside), by This can also collect the above-mentioned identification result data of catenary struts.

Optimally, it also includes a manual button and a second differential circuit unit, wherein the manual button is installed on the data collection vehicle; the output end of the manual button is electrically connected to the input end of the second differential circuit unit, so The output end of the second differential circuit unit is electrically connected to the third input end of the OR gate circuit unit. As shown in FIG. 9 , the manual button is used to generate a switch signal by manual pressing when the data collection vehicle passes the roadside pillar. The second differential circuit unit is used to convert the switch signal from the manual key from a rectangular wave to a sharp pulse wave, so as to obtain a pulse signal representing pulse front information; it can be, but not limited to, use an existing differential circuit or Routinely modify the design of the existing differential circuit. After the first single-chip processing circuit unit obtains the aforementioned pulse signal through the OR gate circuit unit, it can still obtain the aforementioned catenary pole identification result data based on the same existing routine procedure as in Embodiment 1.

This embodiment provides the technical effects of the collection device, and on the basis of the technical effects of Embodiment 1, it also has the following technical effects:

(1) By arranging the OR gate circuit unit in the new acquisition device, it is compatible to obtain the identification results of catenary poles based on switch value detection methods, analog value detection methods and manual methods, so as to meet different usage habits and expand the application scope.

Embodiment three

As shown in Figures 10 to 13, this embodiment is an expanded technical solution that includes Embodiment 1 or Embodiment 2. It provides a non-contact catenary parameter measurement system using digital laser technology, including data center servers, human-computer interaction Equipment and the non-contact catenary parameter acquisition device using digital laser technology as described in Embodiment 1 or Embodiment 2, wherein the input end of the data center server is electrically connected to the non-contact catenary parameter acquisition device The output interface circuit unit of the data center server is electrically connected to the human-computer interaction device.

The data center server is a data processing center and a data storage center of the measurement system, and it has a built-in measurement software including a catenary pole identification result data interface, a driving data interface, a line database, a pole positioning module and a pole number determination module System; wherein, the catenary pole identification result data interface is used to import the catenary pole identification result data from the first single-chip processing circuit unit; the driving data interface is used to import the driving distance from the second single-chip processing circuit unit data; the line database is used to store the line data including line pole number and line name, line interval, line pole number, line where the lead area is located and/or the responsible unit to which the line belongs; the pole positioning module is used for After receiving the real-time catenary pole identification result data from the catenary pole identification result data interface and the real-time driving data from the driving data interface, first calculate the current data collection vehicle position according to the real-time driving data The real-time movement distance to the previous determined pole position, if the real-time movement distance is within the range of S-x～S+x, and the real-time catenary pole identification result data indicates that a pole is currently recognized, then determine the pole To be an effective strut pole, then determine the pole number data of the effective strut pole according to the pole number data of the previously determined strut pole and the line data from the route database, wherein the pole number data includes the line strut of the corresponding strut pole The pole number and the line name of the line to which it belongs, the line section, the leading area where the line is located and/or the responsible unit to which the line belongs, S is the design spacing of catenary support poles, and x is the offset constant.

In the pole positioning module, the design distance S may be, for example, 60 meters, and the offset constant x may be, for example, 2 meters. The numerical range S-x～S+x provides a timing window for verifying whether the currently identified struts are valid struts, thereby eliminating a large number of suspected struts misjudged in the non-timing window, greatly Improve the accuracy of automatic collection of catenary pole numbers. In addition, the line pole number of the most initial pole is manually determined. For example, when the line pole number of the initial pole is determined to be 1024, along the traveling direction of the data collection vehicle, each time a new effective pole is determined, Then the line pole number of the effective pole is automatically increased by 1 on the basis of the line pole number of the previous determined pole.

The human-computer interaction device is used as a staff-oriented human-computer interaction interface to realize the input of initial parameters and the output and display of measurement result data, which may be but not limited to a notebook computer as shown in FIG. 1 .

Optimally, as shown in Figures 10-11, the non-contact catenary parameter measurement system also includes a laser scanner, a gauge sensor and an inclination sensor installed on the data acquisition vehicle, wherein the laser scanner of the laser scanner The scanning surface is located above the data collection vehicle and is perpendicular to the walking direction of the data collection vehicle; the output ends of the laser scanner, the gauge sensor and the inclination sensor are electrically connected to the data center server respectively. input.

As shown in Figure 10, in the structure of the non-contact catenary parameter measurement system, the laser scanner is used to continuously emit laser pulses, and the laser pulses are separated by a certain angle interval by the built-in rotating optical mechanism (Angular resolution) launch to each direction in the scanning angle, and form a two-dimensional scanning surface based on radial coordinates, and finally obtain scanning data including distance and angle information to the position of the measured object; the laser scanner It can be used but not limited to laser scanning equipment model number LMS511-10100 or LMS511-20100. The gauge sensor is used to measure the distance between the left and right rails of the track, and it can be an existing gauge measuring sensor designed by utilizing the principle of magnetostriction. The inclination sensor is used to measure the inclination angle data of the data acquisition vehicle, which is also an existing sensor.

As shown in Figure 11, the measurement software system in the data center server also includes a laser scanner interface, a gauge sensor interface, an inclination sensor interface, a coordinate system module, a calibration module, a compensation module, an overrun judgment module, and a data storage module And display interface drive module; Wherein, described laser scanner interface is used for importing the laser scanning data from laser scanner; Described gauge sensor interface is used for importing the gauge measurement data from gauge sensor; Described inclination sensor interface Used to import the inclination measurement data from the inclination sensor; the coordinate system module is used to convert the real-time scan data from polar coordinates to Cartesian coordinates after receiving the real-time scan data from the laser scanner, and then according to whether it belongs to the same Obstacles classify the real-time scanning data, and filter out the interference data according to the number of continuous data points of obstacles, and finally obtain the real-time wire pull-out value and Live wire height.

The calibration module is used to calculate the original error data produced by machining according to the automatic measurement value and the manual measurement value when calibrating the parameters; The real-time inclination measurement data of the sensor and the original error data from the calibration module correct and compensate the real-time wire pull-out value and the real-time wire height respectively; the overrun judgment module is used to judge the real-time wire pull-out value and the real-time Whether the wire height exceeds the limit, if it is determined that the limit is exceeded, then the nearest catenary pole will be determined by the pole positioning module as the fault interval pole; the data storage module is used to combine the pole number data determined by the pole positioning module with the real-time The wire pull-out value and the real-time wire height are bound and stored; the display interface driver module is used to drive the human-computer interaction device to output and display the latest real-time wire pull-out value, real-time wire height and pole number data, and/or output display and The real-time conductor pull-out value, real-time conductor height and pole number data corresponding to the pole in the fault zone.

The measurement method of the aforementioned non-contact catenary parameter measurement system may, but is not limited to, include the following steps.

S101. Receive real-time scanning data from a laser scanner, and convert the real-time scanning data from polar coordinates to rectangular coordinates.

S102. Classify the real-time scanning data according to whether they belong to the same obstacle, and filter out the interference data according to the number of continuous data points of the obstacle, and finally the remaining real-time scanning data is the scanning data about the catenary wire.

In the step S102, it can be judged whether they belong to the same obstacle according to whether the height difference between the two consecutive data is greater than 30 mm. If the height difference is greater than 30 mm, it is judged as a different obstacle; , so that interference data such as tunnel walls can be filtered out.

S103. According to the remaining real-time scanning data, obtain the real-time conductor pull-out value and the real-time conductor height of the catenary conductor.

S104. Correct and compensate the real-time wire pull-out value and the real-time wire height according to the real-time gauge measurement data from the gauge sensor, the real-time inclination measurement data from the inclination sensor, and the original error data determined during calibration, respectively .

In the step S104, the original error data is the original error generated by machining calculated according to the measured value of the equipment and the actual value measured manually.

S105. Determine whether the corresponding catenary wire is a catenary wire or a catenary cable according to the real-time wire height. If there are two contact wires, calculate the distance between the two contact wires according to the real-time wire pull-out value and the real-time wire height of the corresponding contact wire. Real-time parallel spacing and real-time height difference between them.

In the step S105, it is also possible to judge whether it is an anchor segment or a line branch according to the slope of the two contact lines; the number of hanging strings and the position of each hanging string are calculated according to the formula according to the span.

S106. Judging whether the real-time wire pull-out value, real-time wire height, real-time parallel spacing or real-time height difference exceeds the limit, if it is determined to be over the limit, then the nearest catenary pillar determined according to the real-time catenary pillar rod identification result data and real-time driving data The rod acts as a fault zone rod.

After the step S106, the pre-stored corresponding pole number data can also be found in the line database according to the line pillar pole number of the fault zone pole, and the pole number data and the corresponding real-time wire pull-out value and real-time Other catenary parameters measured in real time, such as conductor height, are used to output warnings, so as to carry out timely maintenance and eliminate traffic hazards.

The data storage methods of the data center server can be divided into two types: full data storage and positioning point data storage. The former saves the full data (including gauge, Superelevation, side limit, pull-out value and height, etc.), the latter stores the geometric parameters of the pillar rod, hanging string and line switch for fixed points.

Optimized, as shown in Figures 12-13, the data center server also has a built-in measurement data playback software system including a storage read-write module, a line manager, a waveform data model, a graphical interface module, a command control module and an operation stack module ;

The storage read-write module is used to read and write historically measured pole number data and catenary parameters from the local data storage module and write the corrected catenary parameters into the local data storage module;

The line manager is used to manage the line data of several track lines, and corresponding to each track line, a curve manager dedicated to managing the line data of the track line is provided;

The waveform data model is used to convert the bar number data and catenary parameters to be output and displayed into output and displayed waveform images according to the prefabricated model;

The graphical interface module is used to display waveform images from the waveform data model, and to input operating instructions manually generated by the operator, wherein the operating instructions include correction instructions for catenary parameters and/or are used to adjust the waveform image display Content control instructions;

The command control module is used to modify the catenary parameters and/or adjust the display content of the waveform image according to the operation instructions from the graphical interface module;

The operation stack module is used to record all operation instructions and corresponding operation records.

As shown in FIGS. 12 and 13 , the catenary parameters may be, but not limited to, wire pull-out value, wire height, parallel spacing or height difference, and the like. Therefore, through the built-in measurement data playback software system in the new measurement system, application purposes such as data playback, data analysis, and data correction of measurement data can also be realized to ensure the automation of later data analysis.

This embodiment provides the technical effects of the measurement system and its measurement method, and on the basis of the technical effects of Embodiment 1 or Embodiment 2, it also has the following technical effects:

(1) This embodiment also provides a new type of measurement system and its measurement method that can automatically collect multiple parameters of the catenary. On the one hand, it can automatically determine the closest catenary support according to the identification results of the catenary support pole and the real-time driving distance The pole number data of the pole, the other party can also combine the laser scanner, gauge sensor and inclination sensor to calculate and obtain the catenary parameters including the pull-out value of the catenary wire and the height of the wire, and can automatically perform data storage, data display and Find the fault location through data overrun detection, further improve detection efficiency, save time and reduce labor costs;

(2) Through the built-in measurement data playback software system in the new measurement system, it can also realize the application purposes of data playback, data analysis and data correction of the measurement data, ensuring the automation of later data analysis.

The present invention is not limited to the above optional embodiments, and anyone can obtain other various forms of products under the enlightenment of the present invention. The above specific implementation methods should not be construed as limiting the protection scope of the present invention. The protection scope of the present invention should be defined in the claims, and the description can be used to interpret the claims.

Claims (10)

1. a kind of contactless catenary's parameters harvester using digital laser technology, it is characterised in that：It is adopted including data Collect vehicle, first laser range sensor, the first differential circuit unit, first singlechip processing circuit unit, pulse coder, when Circuit unit occurs for clock, the direction of motion differentiates circuit unit, reversible counting circuit unit, second singlechip processing circuit list Member and output interface circuit unit, wherein the number of the first laser range sensor is two and is separately mounted to described The direction of travel both sides of data collecting vehicle, and their laser transmitting-receiving direction is made to be respectively perpendicular upward, the pulse coder peace In the traveling wheel shaft of the data collecting vehicle；

The output switch parameter end of the first laser range sensor is electrically connected the input terminal of the first differential circuit unit, institute The output end for stating the first differential circuit unit is electrically connected the input terminal of the first singlechip processing circuit unit, constitutes contact net Strut rod recognition result data acquire branch；

The A phase signals output end of the pulse coder, the B phase signals output end of the pulse coder and the clock pulses The output end that circuit unit occurs is electrically connected three input terminals that the direction of motion differentiates circuit unit, the movement side The input terminal of the reversible counting circuit unit, the reversible counting circuit unit are electrically connected to the output end of differentiation circuit unit Output end be electrically connected the input terminal of the second singlechip processing circuit unit, constitute range of driving data and acquire branch；

The output end of the output end of the first singlechip processing circuit unit and the second singlechip processing circuit unit point It is not electrically connected the output interface circuit unit.

2. a kind of contactless catenary's parameters harvester using digital laser technology as described in claim 1, special Sign is：Further include second laser range sensor, A/D sample circuits unit, digital filter circuit unit and OR circuit list Member, wherein the number of the second laser range sensor is two and is also respectively installed at the walking of the data collecting vehicle Direction both sides, and their laser transmitting-receiving direction is made to be respectively perpendicular upward；

The analog output end of the second laser range sensor is electrically connected the input terminal of the A/D sample circuits unit, institute The output end for stating A/D sample circuit units is electrically connected the input terminal of the digital filter circuit unit, the digital filter circuit The output end of the output end of unit and the first differential circuit unit be electrically connected the OR circuit unit two are defeated Enter end, the output end of the OR circuit unit is electrically connected the input terminal of the first singlechip processing circuit unit.

3. a kind of contactless catenary's parameters harvester using digital laser technology as claimed in claim 2, special Sign is：Further include manual key and the second differential circuit unit, wherein the manual key is mounted on the data collecting vehicle On；

The output end of the manual key is electrically connected the input terminal of the second differential circuit unit, the second differential circuit list The output end of member is electrically connected the third input terminal of the OR circuit unit.

4. a kind of contactless catenary's parameters harvester using digital laser technology as described in claim 1, special Sign is：It further include that speed counts circuit unit and third microcontroller processing circuit unit, wherein the third microcontroller processing The output end of circuit unit is electrically connected the output interface circuit unit；

The direction of motion differentiates that the output end of circuit unit is also electrically connected the input terminal that the speed counts circuit unit, described The output end of speed counting circuit unit is electrically connected the input terminal of the third microcontroller processing circuit unit, constitutes vehicle speed data Acquire branch.

5. a kind of contactless catenary's parameters harvester using digital laser technology as described in claim 1, special Sign is：The direction of motion differentiate circuit unit include first resistor (R1), second resistance (R2), the first diode (D1), Second diode (D2), third diode (D3), the 4th diode (D4), the first NAND gate (U1), the second NAND gate (U2), Three NAND gates (U3), the A phases input terminal (Pin_A) for being electrically connected the A phase signals output end, for being electrically connected the B phases The B phases input terminal (Pin_B) of signal output end and the clock for being electrically connected the clock circuit unit output end Pulse input end (Time)；

The first end of A phases input terminal (Pin_A) electrical connection first resistor (R1), the second of the first resistor (R1) End is electrically connected the first input end of first NAND gate (U1), and the second input terminal of first NAND gate (U1) is electrically connected institute State clock pulse input terminal (Time)；

The first end of B phases input terminal (Pin_B) electrical connection second resistance (R2), the second of the second resistance (R2) End is electrically connected the first input end of second NAND gate (U2), the second output terminal electrical connection of second NAND gate (U2) the The second end of the first end of three resistance (R3), the 3rd resistor (R3) is electrically connected DC voltage；

The output end of first NAND gate (U1) and the output end of second NAND gate (U2) are electrically connected the third The output end of two input terminals of NAND gate (U3), the third NAND gate (U3) differentiates circuit unit as the direction of motion Output end (Pout)；

The first input end of second NAND gate (U2) is also electrically connected the cathode and described second of the first diode (D1) The anode of diode (D2), the output end of the third NAND gate (U3) are also electrically connected the moon of the third diode (D3) The anode of pole and the 4th diode (D4), the sun of the anode and the third diode (D3) of first diode (D1) Pole is grounded respectively, and the cathode of second diode (D2) and the cathode of the 4th diode (D4) are electrically connected described straight Galvanic electricity pressure.

6. a kind of contactless catenary's parameters harvester using digital laser technology as claimed in claim 5, special Sign is：It is also in series between the second end and the first input end of first NAND gate (U1) of the first resistor (R1) Discriminating direction boot leg, wherein the discriminating direction boot leg includes the 4th resistance (R4), the 5th resistance (R5), the 5th Diode (D5), the 6th diode (D6), capacitance (C1), triode (Q1), the 4th NAND gate (U4) and startup control signal (Pin_SY)；

The second end of the first resistor (R1) is electrically connected the first input end of the 4th NAND gate (U4), the startup control Input terminal (Pin_SY) is electrically connected the first end of three resistance (R3), the cathode of the 5th diode (D5) and described Second input terminal of the 4th NAND gate (U4)；

The output end of 4th NAND gate (U4) is electrically connected the anode of the 5th diode (D5), the 4th resistance (R4) First end and the triode (Q1) base stage, the emitter of the triode (Q1) is electrically connected the 6th diode (D6) Anode, the collector of the triode (Q1) be electrically connected the 5th resistance (R5) first end and described first with it is non- The first input end of door (U1)；

The first end of the second end of 4th resistance (R4), the second end of five resistance (R5) and the capacitance (C1) is distinguished It is electrically connected the DC voltage, the second end of the capacitance (C1) and the cathode of the 6th diode (D6) are grounded respectively.

7. a kind of contactless catenary's parameters measuring system using digital laser technology, it is characterised in that：Including in data Central server, human-computer interaction device and as described in claim 1~6 any one using the contactless of digital laser technology Catenary's parameters harvester, wherein the input terminal electrical connection contactless contact net ginseng of the data center server Output interface circuit unit in number harvester, the output end of the data center server are electrically connected the human-computer interaction and set It is standby；

The data center server is built-in with comprising catenary mast bar recognition result data-interface, range of driving data-interface, line Circuit-switched data library, strut rod locating module and strut rod determining module measuring software system；

The catenary mast bar recognition result data-interface is for importing the contact from first singlechip processing circuit unit Net strut rod recognition result data；

The range of driving data-interface is for importing the range of driving data from second singlechip processing circuit unit；

The track data library for store comprising circuit strut rod number and line name, railroad section, circuit strut rod number, Foreman's section where circuit and/or the track data of the affiliated accountability unit of circuit；

The strut rod locating module is used to receive connecing in real time from the catenary mast bar recognition result data-interface After net-fault strut rod recognition result data and real-time range of driving data from the range of driving data-interface, first according to it is described in real time Range of driving data calculate the real-time displacement distance of Current data acquisition truck position to previous determining strut rod position, if the reality When displacement distance be within the scope of S-x~S+x, and the current identification of real-time contact net strut rod recognition result data instruction There is strut rod, then judges that the strut rod is effective strut rod, then according to the bar number of previous determining strut rod and come from The track data in the track data library determines the bar number of effective strut rod, wherein the bar number includes to correspond to Foreman's section and/or circuit institute where the circuit strut rod number of strut rod and the line name of affiliated circuit, railroad section, circuit Belong to accountability unit, S is the design spacing of catenary mast bar, and x is deviation constant.

8. a kind of contactless catenary's parameters measuring system using digital laser technology as claimed in claim 7, special Sign is：Further include laser scanner, track gauge sensor and the obliquity sensor being mounted in data collecting vehicle, wherein described The laser scanning face of laser scanner is located at the top of the data collecting vehicle and hangs down with the direction of travel of the data collecting vehicle Directly；

The output end of the laser scanner, the track gauge sensor and the obliquity sensor is electrically connected in the data The input terminal of central server；

Measuring software system in the data center server further includes laser scanner interface, track gauge sensor interface, inclines Angle transducer interface, coordinate system module, demarcating module, compensating module, the judgment module that transfinites, data memory module and display circle Face drive module；

The laser scanner interface is for importing the laser scanning data from laser scanner；

The track gauge sensor interface is for importing the gauge measurement data from track gauge sensor；

The obliquity sensor interface is for importing the inclination angle measurement data from obliquity sensor；

The coordinate system module is used for after receiving the real-time scan data from laser scanner, by the real time scan number Rectangular co-ordinate is converted to according to by polar coordinates, is then classified to real-time scan data according to whether belonging to same barrier, and Interference data are filtered out according to the consecutive numbers strong point number of barrier, finally according to remaining and about the real-time of contact line conducting wire Scan data obtains the real-time conducting wire stagger of contact line conducting wire and real-time conductor height；

The demarcating module is used in calibrating parameters, is calculated according to automatic measurements and manual measurement value and is produced by mechanical processing Raw initial error data；

The compensating module be used for according to from track gauge sensor real-time gauge measurement data, from the real-time of obliquity sensor Inclination angle measurement data and initial error data from demarcating module described are led to the real-time conducting wire stagger and in real time respectively Line height is modified compensation；

The judgment module that transfinites is for judging whether real-time conducting wire stagger and real-time conductor height transfinite, if it is determined that transfinite, It will then determine nearest catenary mast bar as fault section bar by strut rod locating module；

The bar number that the data memory module is used to be determined by strut rod locating module is drawn with the real-time conducting wire after compensation Go out value and real-time conductor height carries out binding storage；

The display interface drive module shows newest real-time conducting wire stagger, in real time for driving human-computer interaction device to export Conductor height and bar number, and/or output show that real-time conducting wire stagger corresponding with fault section bar, real-time conducting wire are high Degree and bar number.

9. a kind of contactless catenary's parameters measuring system using digital laser technology as claimed in claim 8, special Sign is：The data center server is also built-in with comprising storage module for reading and writing, line management device, Wave data model, figure The measurement data of shape interface module, command control module and active stack module plays back software systems；

The storage module for reading and writing from local data storage module for reading and writing the bar number and contact net ginseng that history measures It counts and modified catenary's parameters is written in local data storage module；

The line management device is used to manage the track data of several track circuits, and corresponding every track circuit, is equipped with special Curve manager for the track data for managing the track circuit；

The Wave data model is for being converted to the bar number and catenary's parameters of display to be output according to pre-manufactured model The waveform image of exportable display；

The graphical interfaces module is for showing that the waveform image from Wave data model, and input are given birth to manually by operator At operational order, wherein the operational order include to the revision directive of catenary's parameters and/or for adjusting waveform image Show the control instruction of content；

The command control module be used for according to the operational order from graphical interfaces module to catenary's parameters be modified and/ Or the display content of adjustment waveform image；

The active stack module is for recording all operational orders and corresponding operation note.

10. a kind of survey of the contactless catenary's parameters measuring system as claimed in claim 8 using digital laser technology Amount method, which is characterized in that include the following steps：

S101. the real-time scan data from laser scanner is received, and the real-time scan data is converted to by polar coordinates Rectangular co-ordinate；

S102. classify to real-time scan data according to whether belonging to same barrier, and according to the continuous data of barrier Point number filters out interference data, and last remaining real-time scan data is exactly the scan data about contact line conducting wire；

S103. according to remaining real-time scan data, the real-time conducting wire stagger of contact line conducting wire and real-time conductor height are obtained；

S104. number is measured according to the real-time gauge measurement data from track gauge sensor, the real-time inclination angle from obliquity sensor According to in the initial error data for marking timing determination, the real-time conducting wire stagger and the real-time conductor height are carried out respectively Correction-compensation；

S105. it determines that corresponding contact line conducting wire is contact line or carrier cable according to real-time conductor height, is touched if there are two piece-root graftings Line calculates separately out then according to the real-time conducting wire stagger of corresponding contact line and real-time conductor height between two contact lines Real-time parallel spacing and real-time difference in height；

S106. judge whether real-time conducting wire stagger, real-time conductor height, real-time parallel spacing or real-time difference in height transfinite, if Judgement is transfinited, then will be according to the nearest contact net branch of real-time contact net strut rod recognition result data and the determination of real-time range of driving data Mast is as fault section bar.