CN101226672A - Communication control alarm device - Google Patents
Communication control alarm device Download PDFInfo
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- CN101226672A CN101226672A CNA2008100559763A CN200810055976A CN101226672A CN 101226672 A CN101226672 A CN 101226672A CN A2008100559763 A CNA2008100559763 A CN A2008100559763A CN 200810055976 A CN200810055976 A CN 200810055976A CN 101226672 A CN101226672 A CN 101226672A
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Abstract
The invention relates to a communication controlling and warning device, comprising a power source unit, which is used to supply power for a serial communication interface unit, a micro-controlling unit and a warning unit. The serial communication interface unit is used to receive the controlling signal sent out by the communication device and sends the controlling signal to the micro-controlling unit, the micro-controlling unit is used to decode the controlling signal sent by the serial communication interface unit and outputs the controlling signal of the state of the electronic switch achieved by decoding to the warning unit, the warning unit, which comprises the electronic switch and the warning device mutually connected is used to control the state of the electronic switch according to the controlling signal of the state of the electronic switch sent by the micro-controlling unit, when the electronic switch is in closing state, the warning device alarms. The expansion of warning function is realized by the warning device of the invention, different communication addresses can be designed according to the communication speed, multi-module expansion is realized and the structure of the circuit is simple.
Description
Technical field
The present invention relates to Industry Control instrument field, be specifically related to a kind of communication control alarm device.
Background technology
At present, the meters product that is used for the alarm condition indication generally adopts pure hardware circuit to realize, by pure hard-wired appliance circuit complexity, and need be than multicomponent.Also there is product to adopt intelligent controllers such as single-chip microcomputer, gets contact switch or voltage signal and do input, adopt modes such as hummer, panel indication flicker, passive contact to do state and output indication.But the function of this class meters product mainly is the indication of existing state, does not possess the expanding function of alarm condition, and needs more outside input wires.
Summary of the invention
The purpose of this invention is to provide a kind of communication control alarm device, utilize warning device to realize the expansion of warning function, can mate communication speed different addresses are set, realize that multimode expansion and circuit structure are simple.
For achieving the above object, the present invention adopts following technical scheme:
A kind of communication control alarm device comprises:
Power supply unit is used to serial communication interface unit, micro-control unit and alarm unit power supply;
Described serial communication interface unit is used to receive the control signal that communication apparatus sends, and described control signal is sent to described micro-control unit;
Described micro-control unit be used for the control signal that described serial communication interface unit sends is decoded, and the electronic switch state control signal that will obtain after will decoding outputs to described alarm unit;
Described alarm unit, comprise the electronic switch and the warning device that are connected in series, the electronic switch state control signal that is used for sending according to described micro-control unit is controlled the state of electronic switch, and when described electronic switch was closure state, described warning device was reported to the police.
Wherein, described electronic switch is a triode.
Wherein, described power supply unit comprises AC power, AC/DC converter and the three terminal regulator that connects successively.
Wherein, the serial ports of described serial communication interface unit is the RS-485 serial line interface.
Wherein, described micro-control unit is a single-chip microcomputer, and the electronic switch state control signal that obtains after the described single-chip microcomputer decoding outputs to alarm unit by the I/O mouth.
Wherein, the p0 mouth of described single-chip microcomputer is connected with toggle switch, is used to be provided with the mailing address and the Transmission bit rate of the control signal of reception, and the p1 mouth of described single-chip microcomputer is connected with alarm unit with the p2 mouth, is electronic switch state control signal output port.
Wherein, described alarm unit also comprises the relay that is connected with electronic switch, described warning device is the light emitting diode of connecting with relay, described electronic switch state control signal comes the conducting of pilot relay by controlling described electronic switch closes, has electric current to report to the police by making described lumination of light emitting diode after the described relay conducting.
Wherein, be connected with the rear end output isolation circuit between described micro-control unit and the alarm unit.
Wherein, be connected with the front end input isolation circuit between described serial communication interface unit and the micro-control unit unit.
Wherein, described front end input isolation or rear end output isolation circuit are photoelectrical coupler.
Utilize Communication Control intelligent alarm device of the present invention to have the following advantages:
1. the present invention can receive extraneous communication signal, produce the signal of pilot relay action by the control module decoding, and then light output indicator, replaced in the prior art intelligent controller only to get contact switch or voltage is done input, but by receiving the control signal of communication input, through the single-chip microcomputer output control relay signal of decoding, guaranteed the reliability of output signal;
2. extensibility of the present invention is good, because the output port of single-chip microcomputer or other microcontroller is more, therefore can insert a plurality of relay output units, the relay output circuit that can gating needs by software setting, and then realize the intelligent alarm of unlike signal.
3. communication control alarm device of the present invention adopts full quarantine measures, i.e. isolated from power, front end input isolated and rear end output two-stage is isolated, and makes the signal strong interference immunity by extraneous communication input, avoided being electrically connected, thereby the good stability of this warning device;
Description of drawings
Fig. 1 is a communication control alarm device internal element synoptic diagram of the present invention;
Fig. 2 is a communication control alarm device AC/DC converter synoptic diagram of the present invention;
Fig. 3 is the circuit diagram of communication control alarm device serial interface unit of the present invention;
Fig. 4 is the circuit diagram of communication control alarm device micro-control unit of the present invention;
Fig. 5 is the circuit diagram of communication control alarm device alarm unit of the present invention.
Embodiment
Following examples are used to illustrate the present invention, but are not used for limiting the scope of the invention.
Communication control alarm device internal element synoptic diagram of the present invention as shown in Figure 1, communication control alarm device of the present invention comprises: power supply unit is used to serial communication interface unit, micro-control unit and alarm unit power supply; Described serial communication interface unit is used to receive the control signal that communication apparatus sends, and described control signal is sent to described micro-control unit; Described micro-control unit be used for the control signal that described serial communication interface unit sends is decoded, and the electronic switch state control signal that will obtain after will decoding outputs to described alarm unit; Described alarm unit, comprise the electronic switch and the warning device that are connected in series, the electronic switch state control signal that is used for sending according to described micro-control unit is controlled the state of electronic switch, and when described electronic switch was closure state, described warning device was reported to the police.Wherein, power supply unit comprises AC power, AC/DC converter and the three terminal regulator that connects successively, be connected with the front end input isolation circuit between described serial communication interface unit and the micro-control unit, be connected with the rear end output isolation circuit between described micro-control unit and the alarm unit.
Electronic switch described in the present embodiment is a triode, and the present invention also is not limited to only use triode, can be other device that electronic switch function is arranged.
Be illustrated in figure 2 as the AC/DC converter synoptic diagram in the power supply unit of the present invention, power supply unit is made of 220V AC power, AC/DC converter and three terminal regulator in the present embodiment, the 220V alternating voltage that described 220V AC power produces is input to AC/DC converter, be converted into the two independent direct supply, be respectively+15V/G15V power supply and VCC/GND power supply, + 15V/G15V represents to provide the direct supply of 15V voltage, and wherein, G15V holds with representing.
Serial communication interface cell schematics of the present invention as shown in Figure 3, AC/DC converter produces+15V/G15V direct supply access three terminal regulator, the model of three terminal regulator employing TI company is the three terminal regulator of 78L05 in the present embodiment, input, output terminal at three terminal regulator connect capacitor C v1, Cv2 respectively, in the required 5V DC voltage in output end vo ut output serial communication interface unit.
The model of serial communication interface unit employing TI company (please replenish) is the interface chip of SN75LBC184 in the present embodiment, and the interface of this chip is the RS-485 serial line interface, and typical serial communication standard is RS-232 and RS-485 in the prior art.
Be different from RS-232, the characteristic of the interface chip of RS-485 communication standard comprises:
1.RS-485 electrical specification: logical one with the voltage difference of line-to-line for+(2-6) V represents; Logical zero with the voltage difference of line-to-line for-(2-6) V represents.Interface signal level ratio RS-232 has reduced, and the chip of fragile interface circuit not like this, and this level and TTL (transistor-transistor logic level) level compatibility can make things convenient for the TTL circuit to be connected;
2.RS-485 the data maximum transmission rate be 10Mbps;
3.RS-485 interface is the combination of adopting balance driver and differential receiver, anti-common mode is done ability and is strengthened, and promptly noise immunity is good;
4.RS-485 the maximum transmission distance standard value of interface is 4000 feet, in fact can reach 3000 meters, RS-232 interface only allows to connect 1 transceiver, promptly single station ability on bus in addition.And the RS-485 interface is to allow to connect nearly 128 transceivers on bus.Promptly have the multistation ability, the user can utilize single RS-485 interface to set up device network easily like this.
Present embodiment is selected the RS-485 interface chip for use, has good noise immunity, advantages such as long transmission range and multistation ability.Because the half-duplex network that the RS-485 interface is formed, general needs two lines, so the RS-485 interface all adopts the Shielded Twisted Pair transmission.The RS-485 interface connector adopts the 9 core plug seats of DB-9, adopts DB-9 (hole) with intelligent terminal RS-485 interface, and the keyboard interface RS-485 that is connected with keyboard adopts DB-9 (pin).RS485 programming serial port protocol has just defined the voltage of transmission etc., and programming mode is the same with common serial port programming.
The 6th pin of interface chip RS-485 in the present embodiment shown in Figure 3, the 7th pin is respectively the A line of communication, the B line, be connected outside input with the B line by the A line, the external communication signal that receives is exported by the 1st pin, this output signal inserts the front end input isolation circuit, the front end input isolation circuit is by the resistance R 1 that connects successively in the present embodiment, light idol RX and resistance R 2 are formed, by the signal of interface chip RS-485 output through resistance R 1, light idol RX, signal and external input signal that resistance R 2 produces are isolated, light idol RX and micro-control unit (MicroController Unit, MCU) GND altogether, micro-control unit adopts 8051 series monolithics in the present embodiment, and the received signal RXD behind light idol RX enters single-chip microcomputer 11 pin.
(optical coupler OC) also claims photoelectrical coupler to the light idol that adopts in the present embodiment, is called for short the light idol.Photoelectrical coupler is the media transmission electric signal with light.It has the good isolation effect to input, output electric signal.Photoelectrical coupler generally is made up of three parts: the emission of light, the reception of light and signal amplify.The electric signal driven for emitting lights diode (LED) of input makes it to send the light of certain wavelength, is received by photo-detector and produces photocurrent, again through further amplifying back output.This has just finished the conversion of electrical-optical-electricity, thereby plays the effect of input, output, isolation.Owing to isolate mutually between the photoelectrical coupler input and output, the electric signal transmission has characteristics such as one-way, thereby has good electrical isolation capabilities and antijamming capability.Input end owing to photoelectrical coupler belongs to the low resistance element of current mode work again, thereby has very strong common mode inhibition capacity.So it can improve signal to noise ratio (S/N ratio) greatly as the terminal isolated component in long line transmission information.In computer digit communication and control in real time,, can increase the reliability of computer operation greatly as the interface device of Signal Spacing.
Be illustrated in figure 4 as the circuit diagram of the micro-control unit in the intelligent alarm device of the present invention, micro-control unit in the present embodiment is 8051 series monolithics, when described single-chip microcomputer receives the data of being imported by the outside by pin one 1, if these data are complete, correct communication input data, described single-chip microcomputer parses each triode state that the communication input is provided with, and output to corresponding alarm unit by single-chip microcomputer p1, each pin of p2 mouth, triode is switched on during low level, and the relay of connecting with triode has electric current to pass through.16,17 pin of single-chip microcomputer also are connected to corresponding alarm unit as the indication output of all triode states.The p0 mouth of single-chip microcomputer connects toggle switch, is used to be provided with instrument address and baud rate, and RP0 is the pull-up resistor row of p0 mouth among the figure, provides and draws level to drive.
Be illustrated in figure 5 as the circuit diagram of communication warning device alarm unit of the present invention, for any alarm unit that is connected with the single-chip microcomputer output port, adopt same circuits, the triode state control signal that each route single-chip microcomputer output port in the present embodiment sends adopts two-stage to isolate after entering this circuit, signal ALxx (road among AL1～AL18) is exported through resistance R INxx by the single-chip microcomputer pin, light idol UGxx control triode Txx reaches pilot relay Kxx and is switched on or is disconnected, wherein light idol UGxx realizes Single-chip Controlling level and the isolation of relay control level, relay K xx itself has control coil and electric shock buffer action, so this partial circuit has the effect that two-stage is isolated.
The course of work below in conjunction with description of drawings present embodiment Communication Control intelligent alarm device: at first, this device is connected with external communications equipment by the serial communication interface unit, receive the control signal that to send warning message by A line and B line, receive micro-control unit behind this signal and obtain the triode state control signal of the representative warning message that each output port should export through parsing, this signal ALxx (road among AL1～AL18) is when being low level, the pressure reduction light emitting diode conducting that it is inner at light idol UGxx input pin 1 and input pin 2 two ends, received by photo-detector and produce photocurrent, again through further amplifying the back output current, be that light idol UGxx is switched on, light idol UGxx is switched on the voltage that produces at output pin 3, producing pressure reduction at the B of triode Txx on extremely like this is switched on the C utmost point of triode Txx and the E utmost point, therefore the resistance R Ixx that has electric current to flow through to be connected in series, relay K xx and light emitting diode DLxx, light emitting diode has electric current to flow through, light emitting diode DLxx is lighted, and sends alarm message reminding and reports to the police.The user can judge the type of sending warning message according to the state that each output port light emitting diode is lighted.Wherein RIxx, RTxx are current-limiting resistance; Dxx is the protection diode; relay K xx work principle is; there is electric current to pass through in the coil among the relay K xx; pilot relay Kxx moves; the state of relay K xx is changed; during relay K xx action; COMxx in the figure repeat circuit is a common port, and NOxx is the normally open end, and NCxx is the normally off end; common port is connected with normally open; relay has been switched on electric current to be passed through, and common port and normally off connect, and relay is not had electric current to pass through by fracture.
Benefit at the alarm unit cut-in relay in the present embodiment is, itself has buffer action relay, cut-in relay makes the signal of circuit more stable, in addition, because relay has the access contact, the user can insert the circuit of being controlled by relay signal as required and arrive this alarm unit, makes the unit can also control the corresponding state of other circuit when sending warning message.Certainly, also cut-in relay not when not needing this function.
Adopt communication control alarm device of the present invention, the full quarantine measures of employing, i.e. isolated from power, front end input isolated and rear end output two-stage is isolated, and makes the signal strong interference immunity by extraneous communication input, avoided being electrically connected, thereby the good stability of this device; In addition, the present invention can receive extraneous communication signal, produce the signal of pilot relay action by the control module decoding, and then output indicator flicker, the invention is not restricted to the relay output unit and only be connected indicating status with light emitting diode, also can connect warning devices such as other hummer, the present invention has replaced in the prior art intelligent controller only to get contact switch or voltage is done input, but by receiving the control signal of communication input, through the single-chip microcomputer output control relay signal of decoding, guaranteed the reliability of output signal; Extensibility of the present invention is good, because single-chip microcomputer or other microcontrolled output ports are more, therefore can insert a plurality of relay output units, the relay output circuit that can gating needs by software setting, and then realize the intelligent alarm of unlike signal.
Micro-control unit in the present embodiment is not limited to 8051 Series chip, it also can be other device that identical control function is arranged, when micro-control unit adopts 8051 Series chip in the present embodiment, the triode State Control output port that is connected with alarm unit is not limited to p1 mouth and p2 mouth, other the port with communication function also can be connected with alarm unit, the extensibility of present embodiment is good, state by the programmed control toggle switch in the present embodiment is realized the transfer rate that coupling is different in addition.
Though the present invention specifically illustrates and illustrates in conjunction with a preferred embodiment; but the personnel that are familiar with this technical field are appreciated that; wherein no matter still can make various changes in detail in form, this does not deviate from spirit of the present invention and scope of patent protection.
Claims (10)
1. a communication control alarm device is characterized in that, comprising:
Power supply unit is used to serial communication interface unit, micro-control unit and alarm unit power supply;
Described serial communication interface unit is used to receive the control signal that communication apparatus sends, and described control signal is sent to described micro-control unit;
Described micro-control unit be used for the control signal that described serial communication interface unit sends is decoded, and the electronic switch state control signal that will obtain after will decoding outputs to described alarm unit;
Described alarm unit, comprise the electronic switch and the warning device that are connected in series, the electronic switch state control signal that is used for sending according to described micro-control unit is controlled the state of electronic switch, and when described electronic switch was closure state, described warning device was reported to the police.
2. communication control alarm device as claimed in claim 1 is characterized in that, described electronic switch is a triode.
3. communication control alarm device as claimed in claim 1 or 2 is characterized in that, described power supply unit comprises AC power, AC/DC converter and the three terminal regulator that connects successively.
4. communication control alarm device as claimed in claim 1 or 2 is characterized in that, described serial communication interface unit is the RS-485 serial line interface.
5. communication control alarm device as claimed in claim 1 or 2 is characterized in that, described micro-control unit is a single-chip microcomputer, and the electronic switch state control signal that obtains after the described single-chip microcomputer decoding outputs to alarm unit by the I/O mouth.
6. communication control alarm device as claimed in claim 5, it is characterized in that, the p0 mouth of described single-chip microcomputer is connected with toggle switch, be used to be provided with the mailing address and the Transmission bit rate of the control signal of reception, the p1 mouth of described single-chip microcomputer is connected with alarm unit with the p2 mouth, is electronic switch state control signal output port.
7. communication control alarm device as claimed in claim 1 or 2, it is characterized in that, described alarm unit also comprises the relay that is connected with electronic switch, described warning device is the light emitting diode of connecting with relay, described electronic switch state control signal comes the conducting of pilot relay by controlling described electronic switch closes, has electric current to report to the police by making described lumination of light emitting diode after the described relay conducting.
8. communication control alarm device as claimed in claim 1 or 2 is characterized in that, is connected with the rear end output isolation circuit between described micro-control unit and the alarm unit.
9. communication control alarm device as claimed in claim 1 or 2 is characterized in that, is connected with the front end input isolation circuit between described serial communication interface unit and the micro-control unit unit.
10. communication control alarm device as claimed in claim 8 or 9 is characterized in that, described front end input isolates or the rear end output isolation circuit is a photoelectrical coupler.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2008100559763A CN101226672A (en) | 2008-01-03 | 2008-01-03 | Communication control alarm device |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2008100559763A CN101226672A (en) | 2008-01-03 | 2008-01-03 | Communication control alarm device |
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| CN101226672A true CN101226672A (en) | 2008-07-23 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102708084A (en) * | 2011-11-30 | 2012-10-03 | 南京埃尔法电液技术有限公司 | Input/output (I/O) communication interface module and communication method thereof |
| CN103218652A (en) * | 2013-04-12 | 2013-07-24 | 尹武 | Radio frequency identification (RFID) tag and active RFID system |
| CN103338083A (en) * | 2013-06-09 | 2013-10-02 | 辽宁省电力有限公司大连供电公司 | Soft signal testing terminal-row device |
| CN101694945B (en) * | 2009-10-22 | 2014-11-05 | 中兴通讯股份有限公司 | Uninterruptible power source monitoring device |
| CN106125582A (en) * | 2016-08-26 | 2016-11-16 | 山东穆柯传感器有限公司 | A kind of controller controlling multiple Press line |
| CN108831117A (en) * | 2018-07-14 | 2018-11-16 | 中铁二院工程集团有限责任公司 | High speed rail earthquake pre-warning system tractive power supply system contact net powers off interface arrangement |
| CN109028508A (en) * | 2018-06-01 | 2018-12-18 | 青岛海尔空调电子有限公司 | Air-conditioning line control machine power supply communication circuit |
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2008
- 2008-01-03 CN CNA2008100559763A patent/CN101226672A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101694945B (en) * | 2009-10-22 | 2014-11-05 | 中兴通讯股份有限公司 | Uninterruptible power source monitoring device |
| CN102708084A (en) * | 2011-11-30 | 2012-10-03 | 南京埃尔法电液技术有限公司 | Input/output (I/O) communication interface module and communication method thereof |
| CN102708084B (en) * | 2011-11-30 | 2015-11-18 | 南京埃斯顿自动化股份有限公司 | A kind of means of communication of I/O communication interface module |
| CN103218652A (en) * | 2013-04-12 | 2013-07-24 | 尹武 | Radio frequency identification (RFID) tag and active RFID system |
| CN103338083A (en) * | 2013-06-09 | 2013-10-02 | 辽宁省电力有限公司大连供电公司 | Soft signal testing terminal-row device |
| CN103338083B (en) * | 2013-06-09 | 2016-03-30 | 国网辽宁省电力有限公司大连供电公司 | Soft signal testing terminal arranging device |
| CN106125582A (en) * | 2016-08-26 | 2016-11-16 | 山东穆柯传感器有限公司 | A kind of controller controlling multiple Press line |
| CN109028508A (en) * | 2018-06-01 | 2018-12-18 | 青岛海尔空调电子有限公司 | Air-conditioning line control machine power supply communication circuit |
| CN109028508B (en) * | 2018-06-01 | 2021-03-23 | 青岛海尔空调电子有限公司 | Power supply communication circuit of air conditioner wire controller |
| CN108831117A (en) * | 2018-07-14 | 2018-11-16 | 中铁二院工程集团有限责任公司 | High speed rail earthquake pre-warning system tractive power supply system contact net powers off interface arrangement |
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Open date: 20080723 |