CN201655020U - Red-light violation light color networking detection system - Google Patents
Red-light violation light color networking detection system Download PDFInfo
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- CN201655020U CN201655020U CN201020116516XU CN201020116516U CN201655020U CN 201655020 U CN201655020 U CN 201655020U CN 201020116516X U CN201020116516X U CN 201020116516XU CN 201020116516 U CN201020116516 U CN 201020116516U CN 201655020 U CN201655020 U CN 201655020U
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Abstract
The utility model discloses a novel red-light violation light color networking detection way. Signals of signal lamp light color detectors and signals of vehicle detectors are networked through an RS485 interface, and finally converted into the Ethernet by an Ethernet converter through an RS485, and all the vehicle detectors and light color converters are used as signal acquiring device interfaces to unitedly access a control host computer in the way, therefore, the utility model voids the problem of disordered connection because various lines are connected to the control host computer, and the stability and the expansibility of the whole system are improved, and as the interfaces are unitedly managed, the compatibility and the stability of the control host computer side are increased, and the system wiring is clear.
Description
Technical field
The utility model discloses a kind of light color networking check system of making a dash across the red light, belong to traffic information collection recording technique field.
Background technology
Use computing machine and communication connecting system in the modern city traffic control system in a large number, now it done concise and to the point introduction:
Data between computing machine and computing machine or computing machine and the terminal transmit can adopt serial communication and two kinds of modes of parallel communication.Because serial communication mode has and uses that circuit is few, cost is low, particularly when remote transmission, avoided the inconsistent of many line characteristics and be widely adopted.When serial communication, require communication two party all to adopt a standard interface, different equipment can be coupled together easily carry out communication.Common PC and smart machine communication over-borrowing help modes such as RS232, RS485, Ethernet, depend primarily on the interface specification of equipment.
Because the RS232 interface standard occurs early weak point being arranged unavoidably, mainly contains following 4 points:
1) signal level value of interface is higher, and the chip of fragile interface circuit is again because incompatible with Transistor-Transistor Logic level so need to use level shifting circuit to be connected with the TTL circuit;
2) transfer rate is lower, and when asynchronous transmission, baud rate is 20Kbps;
3) interface uses a signal wire and a signal line of return and constitutes the transmission form on common ground, and this transmission altogether is easy to generate common mode interference, so a little less than the noise immunity;
4) transmission range is limited, and the maximum transmission distance standard value is 50 feet, in fact also can only be used in about 50 meters.
At the deficiency of RS-232, so just constantly some new interface standards occurred, RS-485 is exactly one of them, and it has following characteristics:
1) electrical specification of RS-485: interface signal level ratio RS-232-C has reduced, and the chip of fragile interface circuit not just, and this level and Transistor-Transistor Logic level compatibility can make things convenient for the TTL circuit to be connected.；
2) the data maximum transmission rate of RS-485 is 10Mbps;
3) the RS-485 interface is the combination of adopting balance driver and differential receiver, and anti-common mode is done ability and strengthened, and promptly noise immunity is good;
4) communication distance of RS-485 maximum is about 1219M, and peak transfer rate is 10Mb/S, and transfer rate and transmission range are inversely proportional to, under the transfer rate of 100Kb/S, just can reach maximum communication distance,, need add 485 repeaters if need the longer distance of transmission.General maximum 32 nodes of supporting of RS-485 bus if use 485 special chips, can reach 128 or 256 nodes, and maximum can support 400 nodes.
Because the RS-485 interface has good noise immunity, above-mentioned advantages such as long transmission range and multistation ability just make it become first-selected serial line interface.Because the half-duplex network that the RS485 interface is formed, general needs two lines, so the RS485 interface all adopts the Shielded Twisted Pair transmission.The RS485 interface connector adopts the 9 core plug seats of DB-9, adopts DB-9 (hole) with intelligent terminal RS485 interface, and the keyboard interface RS485 that is connected with keyboard adopts DB-9 (pin).
The RS-485 bus, require communication distance be tens meters on during km, extensively adopt the RS-485 serial bus standard.RS-485 adopts balance to send and differential received, therefore has the ability that suppresses common mode interference.Transmission signals adds that bus transceiver has high sensitivity, can detect the voltage that is low to moderate 200mV, so can be restored beyond km.RS-485 adopts half-duplex operation, whenever can only have any to be in transmit status, and therefore, transtation mission circuit must be controlled by enable signal.Very convenient when RS-485 is used for multi-point interconnection, can save many signal wires.Use the RS-485 formation distributed system of can networking, it allows 32 drivers at most in parallel and 32 receivers.
Ethernet (Ethernet) refers to by the establishment of Xerox company and by Xerox, and the baseband LAN standard that Intel and DEC develop jointly is the most general communication protocol standard that existing now LAN (Local Area Network) adopts.Ethernet uses CSMA/CD (csma and collision detection technology) technology, and operates on polytype cable with the speed of 10M/S.
The red-lamp running automatic recording system has been used in the modern city traffic in a large number, crossing in the traffic conditions relative complex, the line of system also becomes increasingly complex, the capturing system that makes a dash across the red light of present comparative maturity, main control system has played signals collecting, the central role of signal Processing, because the communication mode of main control system and various device has nothing in common with each other, the interface connection also has nothing in common with each other, this traditional mode with light color input and car test separate detection, the one, make its to the interface requirement of main control system than higher, need RS232, RS485, numerous communication interfaces such as Ethernet interface, the 2nd, make system wiring become complicated, stability is also poor.The utility model proposes for addressing these problems just.
Summary of the invention
The RS485 interface, standard interface as industrial control field, its reliability and stability are the proof in elapsed time, because RS485 is bus structure, so can the signal of signal lamp light color detecting device detection and the signal of vehicle checker detection be networked with the RS485 interface, convert Ethernet to by RS485/ Ethernet converter more at last, by such mode, all vehicle checkers and light color detecting device are all unified the Access Control main frame as the signal picker interface, avoided various lines to be connected to the problem that main control system causes the wiring confusion like this, and the stability of system and expansion all increase.
Particular content of the present utility model is:
A kind of light color networking detection system of making a dash across the red light, comprise traffic lights light color detecting device, telefault, vehicle checker, RS485/ Ethernet converter and main control system, it is characterized in that: traffic lights light color detecting device converts the light color signal of 220V voltage to low-voltage by relay or transformer with high voltage, then converting voltage signal to digital signal again is sent to main control system, vehicle checker detects the current changing signal of telefault, and convert digital signal to, be sent to main control system, traffic lights light color detecting device and vehicle checker all pass through unified RS485 interface series connection, and close main control system through RS485/ Ethernet converter and realize net connection.
The described light color networking detection system of making a dash across the red light is characterized in that: described traffic lights light color detecting device can transfer to the conversion mouth that RS232 changes RS485 through RS232 earlier with the signal of gathering, and through RS485 signal is transferred to main control system again.
The described light color networking detection system of making a dash across the red light is characterized in that: the signal that collects through traffic lights light color detecting device and vehicle checker transmits on the RS485 bus, and is linked on the RS485/ Ethernet converter through the RS485 interface, connects to realize network.
The described light color networking detection system of making a dash across the red light is characterized in that: described RS485 coupling arrangement by 0-31 totally 32 interfaces forms, continuous between each interface by RS485.
Advantage of the present utility model:
Unified docking port manages, and has increased the compatible and stable of main control system end, and system wiring is clear.
Description of drawings
Fig. 1 is traditional light color networking detection mode synoptic diagram that makes a dash across the red light;
Fig. 2 is the light color networking detection mode synoptic diagram that makes a dash across the red light that the utility model adopts;
Fig. 3 is the synoptic diagram of RS485 coupling arrangement.
Embodiment
Fig. 1 is the networking detection mode synoptic diagram of traditional red-lamp running automatic recording system, at first traffic lights light color detecting device converts the light color signal of 220V voltage to low-voltage by relay or transformer with high voltage, then convert voltage signal to digital signal again, at last data-signal is exported by RS232 or RS485, the signal of output is connected to main control system by RS232 and RS485.Same principle, vehicle checker detects the current changing signal of telefault, and converts digital signal to, by the RS485 transmission, also is connected to main control system at last.
Implementation method after the improvement connects the signal that main control system detects traffic lights and each vehicle checker simultaneously by the RS485 interface as shown in Figure 2.At first traffic lights light color detecting device converts the light color signal of 220V voltage to low-voltage by relay or transformer with high voltage, then convert voltage signal to digital signal again, at last digital signal is exported by RS232 or RS485, if RS232 output can add the converter that a RS232 changes RS485.Simultaneously, vehicle checker detects the current changing signal of telefault and converts digital signal to, signal after the conversion also is to transmit by RS485, be connected to main control system at last, so just realized unified connection standard, and because RS485 has remarkable advantages than RS232, for example easy to connect, message transmission rate is high, antijamming capability is strong, institute so that the collection of traffic signals and management are more accurate, fast and reliably.
As shown in Figure 3, it is RS485 coupling arrangement of the present utility model, by 0-31 totally 32 interfaces form, also be to link to each other between each interface, in the time of actual the use by RS485, the signal output part that light color is detected links to each other with interface wherein, the same with vehicle checker, these signals all are to transmit on this RS485 bus, change on the Ethernet converter by one of them RS485 interface being linked into RS485 again, to realize that network connects, and can reach better networking effect.
Claims (4)
1. light color networking detection system of making a dash across the red light, comprise traffic lights light color detecting device, telefault, vehicle checker, RS485/ Ethernet converter and main control system, it is characterized in that: traffic lights light color detecting device converts the light color signal of 220V voltage to low-voltage by relay or transformer with high voltage, then converting voltage signal to digital signal again is sent to main control system, vehicle checker detects the current changing signal of telefault, and convert digital signal to, be sent to main control system, traffic lights light color detecting device and vehicle checker all pass through unified RS485 interface series connection, and close main control system through RS485/ Ethernet converter and realize net connection.
2. the light color networking detection system of making a dash across the red light according to claim 1, it is characterized in that: described traffic lights light color detecting device can transfer to the conversion mouth that RS232 changes RS485 through RS232 earlier with the signal of gathering, and through RS485 signal is transferred to main control system again.
3. the light color networking detection system of making a dash across the red light according to claim 1, it is characterized in that: the signal that collects through traffic lights light color detecting device and vehicle checker transmits on the RS485 bus, and be linked on the RS485/ Ethernet converter through the RS485 interface, connect to realize network.
4. the light color networking detection system of making a dash across the red light according to claim 1 is characterized in that: described RS485 coupling arrangement by 0-31 totally 32 interfaces forms, continuous between each interface by RS485.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020116516XU CN201655020U (en) | 2010-02-09 | 2010-02-09 | Red-light violation light color networking detection system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020116516XU CN201655020U (en) | 2010-02-09 | 2010-02-09 | Red-light violation light color networking detection system |
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| CN201655020U true CN201655020U (en) | 2010-11-24 |
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| CN201020116516XU Expired - Fee Related CN201655020U (en) | 2010-02-09 | 2010-02-09 | Red-light violation light color networking detection system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102542792A (en) * | 2011-12-30 | 2012-07-04 | 中盟智能科技（苏州）有限公司 | Method and device for achieving vehicle inspection device sharing through level signal conversion |
| CN102568196A (en) * | 2011-12-30 | 2012-07-11 | 中盟智能科技（苏州）有限公司 | Method and device for sharing detection information of vehicle detector |
| CN108470454A (en) * | 2018-03-30 | 2018-08-31 | 江苏智通交通科技有限公司 | Track-lamp group-phase association mapping method of signal controlled junctions |
-
2010
- 2010-02-09 CN CN201020116516XU patent/CN201655020U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102542792A (en) * | 2011-12-30 | 2012-07-04 | 中盟智能科技（苏州）有限公司 | Method and device for achieving vehicle inspection device sharing through level signal conversion |
| CN102568196A (en) * | 2011-12-30 | 2012-07-11 | 中盟智能科技（苏州）有限公司 | Method and device for sharing detection information of vehicle detector |
| CN102542792B (en) * | 2011-12-30 | 2014-12-17 | 中盟智能科技（苏州）有限公司 | Method and device for achieving vehicle inspection device sharing through level signal conversion |
| CN108470454A (en) * | 2018-03-30 | 2018-08-31 | 江苏智通交通科技有限公司 | Track-lamp group-phase association mapping method of signal controlled junctions |
| CN108470454B (en) * | 2018-03-30 | 2021-07-09 | 江苏智通交通科技有限公司 | Lane-lamp group-phase correlation mapping method for signal control road junction |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101124 Termination date: 20140209 |