CN103559800A - Communication type traffic signal red light detector - Google Patents
Communication type traffic signal red light detector Download PDFInfo
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- CN103559800A CN103559800A CN201310460659.0A CN201310460659A CN103559800A CN 103559800 A CN103559800 A CN 103559800A CN 201310460659 A CN201310460659 A CN 201310460659A CN 103559800 A CN103559800 A CN 103559800A
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Abstract
The invention discloses a communication type traffic signal red light detector which comprises a shell and an electronic circuit board. The communication type traffic signal red light detector is characterized in that a red light signal detection unit (1), a wave shaping unit (2), a single chip microcomputer processing unit (3), an RS485 communication unit (4), an output indicator unit (5) and a power supply unit (6) are arranged on the electronic circuit board. The red light signal detection unit conducts rectification and current-limiting on the current of a red light signal, the red light signal is added to a photoelectric coupler, output to the wave shaping unit where capacitor filtering and inverter shaping are conducted, and then input into the single chip microcomputer processing unit, the single chip microcomputer processing unit conducts detection and data processing on the red light signal, the digital signal is input into the RS485 communication unit through an UART serial port and output to a shoot unit, and the shoot unit is started to conduct picture shoot and recording on vehicles which run the red light and break rules and regulations. The communication type traffic signal red light detector has the advantages that that eight or more paths of red light signals can be detected at the same time, installation, using and maintenance are convenient, work stability is good, and service life is long.
Description
Technical field
The present invention relates to the pick-up unit of traffic lights, that a kind of communication formula traffic signals red light is surveyed inspection device specifically, this detecting device is mainly used for detecting the duty that the red signal in road traffic belisha beacon group opens or closes in good time, the bright of red signal or the working state signal that goes out are sent to the candid photograph unit of red-lamp running automatic recording system, make to capture unit and can accurately and timely start shooting action, the automatic records photographing of the vehicles peccancy making a dash across the red light is got off.
Background technology
Conventional traffic signals red light detecting device, is a kind of relay system traffic signals red light detecting device in the market, and its structure is mainly comprised of 12V power module, relay assembly.Road traffic Mei road 220V red signal is connected respectively to the line bag of the different relays in relay assembly, the 12V power supply of power module is connected to one of two reed pins on each relay switch, and another pin is wired to red-lamp running automatic recording system and captures unit.When having red light to light, 220V red signal is just to be connected to relay line bag energising, make this relay adhesive, relay switch is closed to be connected, the level transmissions of 12V is captured to unit to red-lamp running automatic recording system, red-lamp running automatic recording system is captured unit and is carried out the detection of 12V level again, to judge that this road signal lamp group is in red light phase, thus the picture shooting of startup red light violation vehicle.As can be seen here, conventional relay system traffic signals red light detecting device, although can complete preferably the detection to red signal, has the following disadvantages at present, one, connecting line is many, and wiring is complicated, inconvenience is installed: because each relay can only detect 1 road red signal, as detected 8 road red signals, just need 16 with input line, 16 output lines, also want the power lead of 12V, so wiring is very many and complicated.Connecting line is too much, and project installation is complicated in actual applications.Its two, poor work stability: the work of relay is when being added to voltage that its line wraps and being driven ，Dang city electro-mechanical wave larger by red signal, and the voltage of red signal fluctuates equally, thereby causes relay misoperation, and rub-out signal even appears in job insecurity.Its three, transmission range is short: relay system traffic signals red light detecting device transmission be 12V level signal, when connecting line is long, line resistance is very large, level loss to transmission is larger, so limited to a certain extent the transmission range of signal, its effective propagation path is 300 meters of left and right.Its four, serviceable life is short: the adhesive of relay is the mechanical motion of its inner reed in fact, by the combination of contact, carrys out signal transmission with separated, poor at the environment of outside work, relay contact is in use oxidizable, loose contact and cause serviceable life short.
Summary of the invention
(1) technical matters that will solve
The technical problem to be solved in the present invention is that the defect or the deficiency that for above-mentioned prior art, exist, provide a kind of communication formula traffic signals red light to survey inspection device, the connecting line that the present invention can overcome prior art existence is many, and wiring is complicated, and inconvenience is installed, poor work stability, the defect such as serviceable life is short.
(2) technical scheme
A kind of communication formula traffic signals red light is surveyed inspection device, comprise housing and electronic circuit board, it is characterized in that, the electronic circuit arranging on described electronic circuit board, comprises red signal detecting unit, wave shaping unit, single-chip microcomputer processing unit, RS485 communication unit, output indicating member and power supply unit, described red signal detecting unit carries out rectification to red signal electric current, after current limliting, be added to photoelectrical coupler, by photoelectrical coupler coupling, output to wave shaping unit again, wave shaping unit carries out inputting single-chip microcomputer processing unit after capacitor filtering and reverser shaping, single-chip microcomputer processing unit to red signal detect and data processing after, by UART serial ports, digital signal is input to RS485 communication unit, RS485 communication unit outputs to and takes the photograph bat unit according to RS485 electrical code, take the photograph and clap unit starting and red light violation vehicle is carried out to picture take the photograph and clap and record.
Described red signal detecting unit: mainly formed by diode, voltage dependent resistor (VDR), resistance, photoelectrical coupler; At every group of red signal, access two-port all and connect voltage dependent resistor (VDR) 471, working surge and the lightning protected effect of preventing, red signal, by diode rectification, is added to photoelectrical coupler through resistance step-down and electric resistance partial pressure, by photoelectrical coupler, is coupled to wave shaping unit.
Described wave shaping unit: mainly by electrochemical capacitor, resistance, reverser forms.The coupled signal of photoelectrical coupler is obtained by resistance sampling, through electrochemical capacitor filtering, is added to reverser and carries out delivering to single-chip microcomputer processing unit after shaping.
Described single-chip microcomputer processing unit: mainly formed by single-chip microcomputer, electric capacity, resistance, crystal oscillator; Single-chip microcomputer is the core devices of whole red light detecting device, and it will complete red signal identification, coding, drives pilot lamp, by communication protocol, send digital signal.Electric capacity is connected on the positive-negative power pin of single-chip microcomputer, plays decoupling effect; Electric capacity, resistance form the electrify restoration circuit of single-chip microcomputer, make single-chip microcomputer reliable reset, enter initialize routine; Electric capacity and crystal oscillator are received on the inside oscillating circuit pin of single-chip microcomputer, form base oscillating circuit when complete, for single-chip microcomputer provides stable work clock signal.
Described RS485 communication unit: mainly formed by MAX485 integrated circuit, signal output AB Wiring port, two resistance; Two resistance are received respectively 2,3 pin and 4 pin of MAX485 integrated circuit, the operating bias voltage of MAX485 integrated circuit is provided, MAX485 integrated circuit completes supplied with digital signal according to RS485 communication electrical code, and to be converted to the output potential of AB two lines poor, exports AB Wiring port be connected to candid photograph unit by signal.
Described output indicating member: mainly by nine resistance, nine LED red light emitting diodes form.Resistance is received single-chip processor i/o mouth and LED light, plays metering function, and first indicates respectively eight road red signal states to the 8th, and the 9th LED light is RS485 communication unit relay indicating light.
Described power supply unit: mainly formed by protective tube, transformer, rectifier bridge stack, electrochemical capacitor, ceramic disc capacitor, three terminal regulator LM7805; 220V electric main is received transformer through protective tube, transformer transformation output AC 9V voltage, through rectifier bridge stack, electrochemical capacitor rectifying and wave-filtering, it is 12V direct current, input again three terminal regulator LM7805 and carry out voltage stabilizing, obtain direct current 5V voltage, for other element circuit, input, output terminal that ceramic disc capacitor is received three terminal regulator LM7805 play uncoupling and go interference effect.
(3) beneficial effect
Communication formula traffic signals red light detecting device has made up the shortcomings such as relay system traffic signals red light detecting device connecting line is many, wiring is complicated, installation is inconvenient, poor work stability, transmission range is near, serviceable life is short.Tool has the following advantages and effect:
Easy to install: red signal input line has adopted Wiring port connection, communication adopts two line multiple twins, and detecting device of the present invention can detect 8 tunnels simultaneously so that more red signal is compared conventional relay system detecting device at present, greatly reduced connecting line, and installed very convenient.
Good operating stability: red signal detects and adopted photoelectrical coupler, adapts to voltage range wide, digital signal processing employing is anti-interference by force, the single-chip microcomputer of stable performance, and communication adopts RS485 mode, and whole system works is reliable and stable.
Long transmission distance: RS485 is potential difference (PD) transmission, is subject to transmission cable effect length little, and maximum can transmission range be 12 kilometers, can meet the user demand at different crossings.
Long service life: communication formula traffic signals red light detecting device has adopted photoelectrical coupler to detect red signal, and communication adopts RS485 mode, and signal is treated to digitizing, signal transmission digitizing, complete machine extends serviceable life greatly.
Easy to maintenance: during this product design, consider and maintain easily, the connection of all lines all adopts Wiring port, convenient disassembly; Adopt 9 LED light emitting diodes as pilot lamp, without instrument measurement and dismounting casing, just can judge the duty He Mei road red signal state of machine, very convenient maintenance.
Accompanying drawing explanation
Fig. 1 is the present invention's formula traffic signals red light detector functions module block diagram of communicating by letter.
Fig. 2 is the present invention's formula traffic signals red light detector electronics reference view of communicating by letter.
Shown in figure: 1, red signal detecting unit, 2, wave shaping unit, 3, single-chip microcomputer processing unit, 4, RS485 communication unit, 5, output indicating member and, 6, power supply unit.
embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples are used for illustrating the present invention, but are not used for limiting the scope of the invention.
As shown in Figure 1, the present invention's formula traffic signals red light of communicating by letter is surveyed inspection device, comprise housing and electronic circuit board, the electronic circuit arranging on electronic circuit board includes, red signal detecting unit 1, wave shaping unit 2, single-chip microcomputer processing unit 3, RS485 communication unit 4, output indicating member 5 and power supply unit 6.1 pair of red signal electric current of red signal detecting unit carries out rectification, after current limliting, be added to photoelectrical coupler, by photoelectrical coupler coupling, output to wave shaping unit 2 again, wave shaping unit 2 carries out inputting single-chip microcomputer processing unit 3 after capacitor filtering and reverser shaping, 3 pairs of red signals of single-chip microcomputer processing unit detect and data processing after, by UART serial ports, digital signal is input to RS485 communication unit 4, RS485 communication unit 4 outputs to and takes the photograph bat unit according to RS485 electrical code, take the photograph and clap unit starting and red light violation vehicle is carried out to picture take the photograph and clap and record.
Shown in Fig. 2 is the present invention's formula traffic signals red light detector electronics reference view of communicating by letter, and this accompanying drawing is clearly shown that the electronic line structure of each functional module:
Red signal detecting unit 1 is mainly by diode, and (preferably diode 1N4007), voltage dependent resistor (VDR) (preferably install and put voltage dependent resistor (VDR) 471), resistance (51K resistance, 470 Ω resistance are preferably installed), photoelectrical coupler (optocoupler 4n25 is preferably installed) form; At every group of red signal, access two-port all and connect voltage dependent resistor (VDR) 471; work surge and the lightning protected effect of preventing; red signal electric current is by diode 1N4007 rectification, and process 51K resistance step-down and 470 Ω electric resistance partial pressures are added to the input of optocoupler 4n25, are coupled to wave shaping unit 2.
Described wave shaping unit 2: mainly, by electrochemical capacitor (10UF electrochemical capacitor is preferably installed), resistance (preferably install and put 10K resistance), reverser (74LS14 reverser is preferably installed) forms.The coupled signal of optocoupler 4n25 is obtained by 10K resistance sampling, through the filtering of 10UF electrochemical capacitor, is added to reverser 74LS14 and carries out delivering to single-chip microcomputer processing unit after shaping.
Described single-chip microcomputer processing unit 3: mainly formed by single-chip microcomputer (preferably 8 STC12C5A32S2), electric capacity (preferably 0.1UF electric capacity, 30PF electric capacity, 10UF electric capacity), resistance (10K resistance is preferably installed) and crystal oscillator (22.1184MHZ crystal oscillator is preferably installed).8 single-chip microcomputer STC12C5A32S2 are core devices of whole red light detecting device, and it will complete red signal identification, coding, drives pilot lamp, by communication protocol, send digital signal.0.1UF electric capacity is connected on the positive-negative power pin of single-chip microcomputer, plays decoupling effect; 10UF electric capacity, 10K resistance form the electrify restoration circuit of single-chip microcomputer, make single-chip microcomputer reliable reset, enter initialize routine; The inside oscillating circuit pin that 2 30PF electric capacity and 22.1184MHZ crystal oscillator are received single-chip microcomputer forms base oscillating circuit when complete, for single-chip microcomputer provides stable work clock signal.
Described RS485 communication unit 4: mainly formed by MAX485 integrated circuit, signal output AB Wiring port, two resistance (preferably 1K resistance); 2 1K resistor group are received respectively 2,3 pin and 4 pin of MAX485 integrated circuit, the operating bias voltage of MAX485 integrated circuit is provided, MAX485 integrated circuit completes supplied with digital signal according to RS485 communication electrical code, and to be converted to the output potential of AB two lines poor, exports AB Wiring port be connected to candid photograph unit by signal.
Described output indicating member 5: mainly by nine resistance (1K resistance is preferably installed), nine LED light emitting diodes (LED red light emitting diodes is preferably installed) form.Resistance is received single-chip processor i/o mouth and LED light, plays metering function, and first indicates respectively eight road red signal states to the 8th, and the 9th LED light is RS485 communication unit relay indicating light.
Described power supply unit 6 is mainly comprised of protective tube, transformer, rectifier bridge stack, electrochemical capacitor, ceramic disc capacitor, three terminal regulator LM7805; 220V alternating current is received transformer through protective tube, transformer transformation output AC 9V voltage, through rectifier bridge stack, electrochemical capacitor rectifying and wave-filtering, it is 12V direct current, input again three terminal regulator LM7805 and carry out voltage stabilizing, obtain direct current 5V voltage, for other element circuit, input, output terminal that ceramic disc capacitor is received three terminal regulator LM7805 play uncoupling and go interference effect.
Principle of work:
Communication formula traffic signals red light detecting device can detect eight road red signals simultaneously, and red signal is 220V electric main.Red signal electric current is through overcommutation, current limliting, be added to photoelectrical coupler, again by photoelectrical coupler coupling output, through capacitor filtering, after reverser shaping, input single-chip microcomputer, single-chip microcomputer detects and data processing red signal, single-chip microcomputer completes after data processing, by I/O mouth, drive pilot lamp, pilot lamp is lighted and is represented that corresponding signal lamp is red signal, simultaneously by UART serial ports, press red light communication detector agreement and send digital signal, digital signal is input to RS485 communication unit 4, RS485 communication unit 4 outputs to according to RS485 electrical code the candid photograph unit that makes a dash across the red light, capture unit starting the illegal vehicle that makes a dash across the red light is carried out to picture candid photograph and record.The working power of whole red light detecting device is provided by power supply unit, and 220V electric main arrives 9V through transformer transformation, then by rectifier bridge stack rectification, electrochemical capacitor is filtered into direct current 12V left and right voltage, again by three terminal regulator, voltage stabilization at direct current 5V, for whole red light sensors work.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the technology of the present invention principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (7)
1. a communication formula traffic signals red light is surveyed inspection device, comprise housing and electronic circuit board, it is characterized in that, the electronic circuit arranging on described electronic circuit board, comprises red signal detecting unit (1), wave shaping unit (2), single-chip microcomputer processing unit (3), RS485 communication unit (4), output indicating member (5) and power supply unit (6), described red signal detecting unit (1) carries out rectification to red signal electric current, after current limliting, be added to photoelectrical coupler, by photoelectrical coupler coupling, output to wave shaping unit (2) again, wave shaping unit (2) carries out inputting single-chip microcomputer processing unit (3) after capacitor filtering and reverser shaping, single-chip microcomputer processing unit (3) to red signal detect and data processing after, by UART serial ports, digital signal is input to RS485 communication unit (4), RS485 communication unit (4) outputs to and takes the photograph bat unit according to RS485 electrical code, take the photograph and clap unit starting and red light violation vehicle is carried out to picture take the photograph and clap and record.
2. communication formula traffic signals red light as claimed in claim 1 is surveyed inspection device, it is characterized in that, described red signal detecting unit (1), is mainly comprised of diode, voltage dependent resistor (VDR), resistance, photoelectrical coupler; Described voltage dependent resistor (VDR) is attempted by two incoming ends of every group of red signal, works the protective effect that prevents surge and thunder and lightning, and red signal electric current, by diode rectification, is added to photoelectrical coupler through resistance step-down and electric resistance partial pressure.
3. communication formula traffic signals red light as claimed in claim 1 is surveyed inspection device, it is characterized in that, and described wave shaping unit (2), mainly by electrochemical capacitor, resistance, reverser forms.The coupled signal of photoelectrical coupler is obtained by resistance sampling, through electrochemical capacitor filtering, is added to reverser and carries out delivering to single-chip microcomputer processing unit (3) after shaping.
4. communication formula traffic signals red light as claimed in claim 1 is surveyed inspection device, it is characterized in that, described single-chip microcomputer processing unit (3), is mainly comprised of single-chip microcomputer, electric capacity, resistance, crystal oscillator; Single-chip microcomputer is the core devices of whole red light detecting device, and it will complete red signal identification, coding, drives pilot lamp, by communication protocol, send digital signal; Electric capacity is connected on the positive-negative power pin of single-chip microcomputer, plays decoupling effect; Electric capacity, resistance form the electrify restoration circuit of single-chip microcomputer, make single-chip microcomputer reliable reset, enter initialize routine; Electric capacity and crystal oscillator are received on the inside oscillating circuit pin of single-chip microcomputer, form base oscillating circuit when complete, for single-chip microcomputer provides stable work clock signal.
5. communication formula traffic signals red light as claimed in claim 1 is surveyed inspection device, it is characterized in that described RS485 communication unit (4) is mainly comprised of MAX485 integrated circuit, signal output AB Wiring port, two resistance; Two resistance are received respectively 2,3 pin and 4 pin of MAX485 integrated circuit, the operating bias voltage of MAX485 integrated circuit is provided, MAX485 integrated circuit completes supplied with digital signal according to RS485 communication electrical code, and to be converted to the output potential of AB two lines poor, exports AB Wiring port be connected to candid photograph unit by signal.
6. communication formula traffic signals red light as claimed in claim 1 is surveyed inspection device, it is characterized in that, and described output indicating member (5), mainly by nine resistance, nine LED red light emitting diodes form.Resistance is received single-chip processor i/o mouth and LED light, plays metering function, and first indicates respectively eight road red signal states to the 8th, and the 9th LED light is RS485 communication unit (4) relay indicating light.
7. communication formula traffic signals red light as claimed in claim 1 is surveyed inspection device, it is characterized in that described power supply unit (6) is mainly comprised of protective tube, transformer, rectifier bridge stack, electrochemical capacitor, ceramic disc capacitor, three terminal regulator LM7805; 220V electric main is received transformer through protective tube, transformer transformation output AC 9V voltage, through rectifier bridge stack, electrochemical capacitor rectifying and wave-filtering, it is 12V direct current, input again three terminal regulator LM7805 and carry out voltage stabilizing, obtain direct current 5V voltage, for other element circuit, input, output terminal that ceramic disc capacitor is received three terminal regulator LM7805 play uncoupling and go interference effect.
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| CN201310460659.0A CN103559800A (en) | 2013-09-27 | 2013-09-27 | Communication type traffic signal red light detector |
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| CN201310460659.0A CN103559800A (en) | 2013-09-27 | 2013-09-27 | Communication type traffic signal red light detector |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105118319A (en) * | 2015-09-02 | 2015-12-02 | 宁波摩米创新工场电子科技有限公司 | Shaping-circuit-based mode identification prompting system for infrared positioning signal lamp |
| CN108492606A (en) * | 2018-02-28 | 2018-09-04 | 江苏航天大为科技股份有限公司 | A kind of passive multichannel traffic lights detector |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3201384A1 (en) * | 1982-01-19 | 1983-07-28 | Dansk Signal Industri A/S, 2650 Hvidovre | Traffic light signal device having a photoelectric monitoring circuit |
| CN101488285A (en) * | 2009-03-05 | 2009-07-22 | 上海新中新猎豹交通科技股份有限公司 | Traffic signal light state collecting device based on wireless transmission |
| CN102201169A (en) * | 2011-03-17 | 2011-09-28 | 生茂光电科技股份有限公司 | Dynamic pedestrian signal lamp circuit |
| CN202033811U (en) * | 2011-01-27 | 2011-11-09 | 武汉汉王智能交通科技有限公司 | Embedded intelligent/multifunctional high-resolution vehicle recording host computer |
-
2013
- 2013-09-27 CN CN201310460659.0A patent/CN103559800A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3201384A1 (en) * | 1982-01-19 | 1983-07-28 | Dansk Signal Industri A/S, 2650 Hvidovre | Traffic light signal device having a photoelectric monitoring circuit |
| CN101488285A (en) * | 2009-03-05 | 2009-07-22 | 上海新中新猎豹交通科技股份有限公司 | Traffic signal light state collecting device based on wireless transmission |
| CN202033811U (en) * | 2011-01-27 | 2011-11-09 | 武汉汉王智能交通科技有限公司 | Embedded intelligent/multifunctional high-resolution vehicle recording host computer |
| CN102201169A (en) * | 2011-03-17 | 2011-09-28 | 生茂光电科技股份有限公司 | Dynamic pedestrian signal lamp circuit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105118319A (en) * | 2015-09-02 | 2015-12-02 | 宁波摩米创新工场电子科技有限公司 | Shaping-circuit-based mode identification prompting system for infrared positioning signal lamp |
| CN108492606A (en) * | 2018-02-28 | 2018-09-04 | 江苏航天大为科技股份有限公司 | A kind of passive multichannel traffic lights detector |
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Application publication date: 20140205 |
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