CN201662890U - Intelligent loop vehicle detector - Google Patents
Intelligent loop vehicle detector Download PDFInfo
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- CN201662890U CN201662890U CN2010201033230U CN201020103323U CN201662890U CN 201662890 U CN201662890 U CN 201662890U CN 2010201033230 U CN2010201033230 U CN 2010201033230U CN 201020103323 U CN201020103323 U CN 201020103323U CN 201662890 U CN201662890 U CN 201662890U
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Abstract
The utility model provides an intelligent loop vehicle detector, which is characterized in that the intelligent loop vehicle detector comprises a master control unit, the master control unit is respectively connected with a communication unit, a display/key unit and a vehicle detection unit in a signaling way, and a system power supply unit is electrically connected with the master control unit, the vehicle detection unit and the communication unit. The intelligent loop vehicle detector has a front-end processing capacity. When the intelligent loop vehicle detector detects a vehicle passage state, the intelligent loop vehicle detector can conduct internal computation to figure out statistical parameters such as traffic flow, average speed, lane occupancy ratio, average vehicle distance and the like required by an intelligent traffic system and can transmit the statistical data to a crossing signal controller transmission central system through specific communication protocols. Since an man-machine interaction interface is good and an LCD is used for displaying parameters such as control state, coil connection state and the like, the field observation and the setting are convenient; and since the lightning protection design is adopted for a power supply, an induction coil and a communication port, the detector is more adaptable to adverse crossing environments and the system robustness is increased.
Description
Technical field
The utility model relates to the vehicle electric technical field, particularly a kind of intelligent Loop Vehicle Detector.
Background technology
Wagon detector is widely used in the middle of the Modern Traffic control system as the traffic behavior collecting device of intelligent transportation control.Loop vehicle detector is because its equipment is stable, outstanding performance under severe weather conditions, and cheap cost is widely used.
Loop Vehicle Detector, ultimate principle be, buries inductive coil underground in the road foundation section in track, and inductive coil links to each other with the hyperchannel wagon detector.When vehicle passes through coil respectively, because the variation of winding inductance quantity, the passing through state and will be detected of vehicle, wagon detector is many to be exported at signal automobile storage in the switching value mode, reach the purpose of vehicle detection.
The toroid winding car test mode that prior art provides is widely used in the acquisition of road traffic information equipment as a kind of more traditional detection mode, but works as the number of track-lines quantitative change for a long time, and the switching value signal of transmission produces greatly burden for treatment facility.
The mostly existing Loop Vehicle Detector that provides in the prior art is provided with by button or toggle switch, and call parameter need preliminary election write inspection car device when dispatching from the factory, and the execute-in-place inconvenience does not have the good man-machine interaction interface.
Because the working environment of Loop Vehicle Detector is the crossing environment, condition is relatively poor, causes device damage serious.
The utility model content
The utility model provides intelligent Loop Vehicle Detector, so that the intelligent Loop Vehicle Detector with front-end processing ability to be provided, detect vehicle by state in, carry out internal arithmetic, calculate the required statistical parameter of intelligent transportation system, as flow, average velocity, lane occupancy ratio, average following distance etc., and these statisticss are transferred to the crossing signal controlling machine by specific communication protocol send center system; The good man-machine interaction interface, parameters such as LCD display control state, coil connection status make things convenient for field observation and setting; Power supply, inductive coil, communication port lightning Protection Design adapt to the crossing rugged surroundings more, increase system robustness.
To achieve these goals, the utility model provides following technical scheme:
A kind of intelligent Loop Vehicle Detector, it comprises: main control unit, described main control unit divide level signal to connect communication unit, demonstration/push-button unit and car test unit, and SPU is electrically connected described main control unit, car test unit and communication unit.
Wherein, preferred, described SPU comprises: air switch, lightning protection device for electric power, every
From transformer and Switching Power Supply.
Wherein, preferred, described SPU, communication unit and car test unit external coil interface all have lightning protection device.
Wherein, preferably, the lightning protection device of described communication unit and car test unit external coil interface comprises: be connected the gas-discharge tube Q1 between the Differencing communication line of input end of described communication unit, the two ends 1 of described gas-discharge tube Q1,2 ends are connected between the described Differencing communication line, the intermediate ends of described gas-discharge tube Q1 is connected two Transient Suppression Diode TVS1 of series connection mutually, between the two ends of TVS2, the intermediate ends of described gas-discharge tube Q1 is ground connection also, the other end of described Transient Suppression Diode TVS1 connects 2 ends of described gas-discharge tube Q1 by resistance R 2, the other end of described Transient Suppression Diode TVS2 is by 1 end of the described gas-discharge tube Q1 of resistance R 1 connection, and Transient Suppression Diode TVS3 is connected in parallel on Transient Suppression Diode TVS1 and Transient Suppression Diode TVS2 two ends.
Implement above technical scheme, have following beneficial effect: the utility model provides a kind of intelligent Loop Vehicle Detector, on this Loop Vehicle Detector, the traffic control statistical parameter is carried out front-end processing, the resource occupation of avoiding the transmission of conventional switch signal to cause, reduce the processing pressure of the oral sex messenger controller that satisfies the need, adapt to the actual conditions that have a lot of social connections in modern road, the track is many.
This Loop Vehicle Detector provides good visual human-computer interaction interface, makes things convenient for the field personnel to operate; Controlled variable can be assigned or on-the-spot button input setting through traffic signal controlling machine according to specific communication protocol by central control system; Traffic control statistical parameter and car test state real-time report traffic signal controlling machine and central control system.
Support the wireless short-range communication mode, form the cordless communication network of crossing level, realize data interaction, need not to lay communication line; System power supply, toroid winding, communication port lightning Protection Design reduce the threat of thunderbolt to security of system.
Description of drawings
The intelligent Loop Vehicle Detector structural representation that Fig. 1 provides for the utility model embodiment;
The control panel structural representation that Fig. 2 provides for the utility model embodiment;
The external coil lightning protection device circuit theory diagrams that Fig. 3 provides for the utility model embodiment.
Embodiment
In order better to understand the technical solution of the utility model, describe the embodiment that the utility model provides in detail below in conjunction with accompanying drawing.
The utility model embodiment provides a kind of intelligent Loop Vehicle Detector, as shown in Figure 1, this detecting device comprises: main control unit 101,101 fens level signals of described main control unit connect communication unit 102, demonstration/push-button unit 104 and car test unit 103, and SPU 105 is electrically connected described main control unit 101, car test unit 103 and communication unit 102.Wherein, in the present embodiment, described SPU 105 comprises: air switch, lightning protection device for electric power, isolating transformer and Switching Power Supply also connect external coil interface lightning protection device on the described communication unit 102.Concrete, described external coil interface lightning protection device comprises: be connected the gas-discharge tube Q1 between the Differencing communication line of input end of described communication unit, 1 of described gas-discharge tube Q1,2 ends are connected between the described Differencing communication line, the intermediate ends of described gas-discharge tube Q1 is connected two Transient Suppression Diode TVS1 of series connection mutually, between the two ends of TVS2, the intermediate ends of described gas-discharge tube Q1 is ground connection also, the other end of described Transient Suppression Diode TVS1 connects 2 ends of described gas-discharge tube Q1 by resistance R 2, the other end of described Transient Suppression Diode TVS2 is by 1 end of the described gas-discharge tube Q1 of resistance R 1 connection, and Transient Suppression Diode TVS3 is connected in parallel on Transient Suppression Diode TVS1 and Transient Suppression Diode TVS2 two ends.
System power supply is introduced intelligent Loop Vehicle Detector with the utility network alternating current 220V, behind the double air switch of 10A, insert lightning protection device and carry out the power lightning protection processing, isolating transformer is inserted in the back isolates intelligent Loop Vehicle Detector built-in system and externally fed system fully, isolating transformer output stage welding system built-in system power supply unit is whole built-in system power supply.
Control command and configuration parameter that main control unit 101 is accepted from communication unit 102, the coil connection status and the car test result that provide according to car test unit 103, go out the required statistical parameter of intelligent transportation system according to algorithm computation, as flow, average velocity, lane occupancy ratio, average following distance etc., and desired parameters is sent to the crossing traffic signal controlling machine and reports center system according to control command.With the configuration parameter storage of obtaining, and assign car test unit 103.Reception is from the operation of button, and the LCD that drives demonstrations/push-button unit 104 shows, the human-computer interaction interface of friendliness is provided.
As shown in Figure 2, demonstration/push-button unit 104 comprise 320*240 resolution lattice type LCD screen, 4*2 push-button array with 9 LED lamps.9 LED lamps are responsible for indicating power supply status and coil state, when no external coil connects, and the flicker of respective channel LED lamp, respective channel LED extinguishes when external coil connects normal but do not have the car test signal, and respective channel LED extinguishes and lights when detecting vehicle; The LCD screen shows the parameter that will inquire about and be provided with according to the input of push-button array, and visual interactive interface is provided.
Be provided with second lightning protection device in utility grid alternating current 220V porch, prevent to cause voltage fluctuation to damage intelligent Loop Vehicle Detector by utility network thunderbolt residual voltage; Input end at communication unit 102, adopt the two-stage protection between the differential signal order wire, as shown in Figure 3, this lightning protection device comprises: first order protection is three-end air discharging pipe Q1 in parallel between order wire, 3 ends of gas-discharge tube Q1 (center discharge end) connect protection ground, when thunderbolt sealed in order wire, gas-discharge tube Q1 was used as main discharge means; Second level protection is between order wire and order wire Transient Suppression Diode TVS1 in parallel over the ground, TVS1 and TVS3, because gas-discharge tube Q1 responsiveness is slow, Transient Suppression Diode TVS1, TVS1 and TVS3 are fast than gas-discharge tube Q1 response speed, can be when first order gas-discharge tube Q1 begin to move, communication port is protected the induced voltage of after first order gas-discharge tube Q1 action, further decaying; 4.7 ohm of protective resistance R1 of series connection and R2 between Transient Suppression Diode TVS1, the TVS1 of I and II protection and gas-discharge tube Q1, when immediate current was excessive, resistance R 1 and R2 burnt short, and the protection internal components is without prejudice; Coil input end externally, be the induction thunder damage internal oscillator circuit that prevents to produce by coil, adopt three grades of lightning protection measures, preceding two-stage is consistent with the communication port lightning protection, the third level is the circuit board level lightning protection, when coil place in circuit plate, the inside concussion system of neon tube assurance detecting device in parallel is perfectly safe.
On this Loop Vehicle Detector, the traffic control statistical parameter is carried out front-end processing, avoid the conventional switch signal to transmit the resource occupation that causes, reduce the processing pressure of the oral sex messenger controller that satisfies the need, adapt to the actual conditions that have a lot of social connections in modern road, the track is many.
This Loop Vehicle Detector provides good visual human-computer interaction interface, makes things convenient for the field personnel to operate; Controlled variable can be assigned or on-the-spot button input setting through traffic signal controlling machine according to specific communication protocol by central control system; Traffic control statistical parameter and car test state real-time report traffic signal controlling machine and central control system.
Support the wireless short-range communication mode, form the cordless communication network of crossing level, realize data interaction, need not to lay communication line; System power supply, toroid winding, communication port lightning Protection Design reduce the threat of thunderbolt to security of system.
More than intelligent Loop Vehicle Detector that the utility model embodiment is provided be described in detail, for one of ordinary skill in the art, thought according to the utility model embodiment, part in specific embodiments and applications all can change, in sum, this description should not be construed as restriction of the present utility model.
Claims (4)
1. intelligent Loop Vehicle Detector, it is characterized in that, comprise: main control unit, described main control unit divide level signal to connect communication unit, demonstration/push-button unit and car test unit, and SPU is electrically connected described main control unit, car test unit and communication unit.
2. intelligent according to claim 1 Loop Vehicle Detector is characterized in that described SPU comprises: air switch, lightning protection device for electric power, isolating transformer and Switching Power Supply.
3. intelligent according to claim 1 Loop Vehicle Detector is characterized in that, described SPU, communication unit and car test unit external coil interface all have lightning protection device.
4. as intelligent Loop Vehicle Detector as described in the claim 3, it is characterized in that, the lightning protection device of described communication unit and car test unit external coil interface comprises: be connected the gas-discharge tube Q1 between the Differencing communication line of input end of described communication unit, 1 of described gas-discharge tube Q1,2 ends are connected between the described Differencing communication line, the intermediate ends of described gas-discharge tube Q1 is connected two Transient Suppression Diode TVS1 of series connection mutually, between the two ends of TVS2, the intermediate ends of described gas-discharge tube Q1 is ground connection also, the other end of described Transient Suppression Diode TVS1 connects 2 ends of described gas-discharge tube Q1 by resistance R 2, the other end of described Transient Suppression Diode TVS2 is by 1 end of the described gas-discharge tube Q1 of resistance R 1 connection, and Transient Suppression Diode TVS3 is connected in parallel on Transient Suppression Diode TVS1 and Transient Suppression Diode TVS2 two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201033230U CN201662890U (en) | 2010-01-22 | 2010-01-22 | Intelligent loop vehicle detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201033230U CN201662890U (en) | 2010-01-22 | 2010-01-22 | Intelligent loop vehicle detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201662890U true CN201662890U (en) | 2010-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201033230U Expired - Fee Related CN201662890U (en) | 2010-01-22 | 2010-01-22 | Intelligent loop vehicle detector |
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| CN (1) | CN201662890U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102684181A (en) * | 2012-05-14 | 2012-09-19 | 江苏中科梦兰电子科技有限公司 | Anti-static and lightning-prevention dual protection circuit |
-
2010
- 2010-01-22 CN CN2010201033230U patent/CN201662890U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102684181A (en) * | 2012-05-14 | 2012-09-19 | 江苏中科梦兰电子科技有限公司 | Anti-static and lightning-prevention dual protection circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101201 Termination date: 20140122 |