CN205428220U - Traffic signal light control device based on 485 communication - Google Patents
Traffic signal light control device based on 485 communication Download PDFInfo
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- CN205428220U CN205428220U CN201620259260.5U CN201620259260U CN205428220U CN 205428220 U CN205428220 U CN 205428220U CN 201620259260 U CN201620259260 U CN 201620259260U CN 205428220 U CN205428220 U CN 205428220U
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Abstract
The utility model discloses a traffic signal light control device based on 485 communication, including traffic signal system, traffic signal system through AC220V power cord and 485 order wires be connected with respectively east, south, west, north each side to the traffic light controller, the traffic light controller includes CPU the control unit, electric current back production unit and scheme memory cell, CPU the control unit is connected with power supply unit and address setting unit respectively, just CPU the control unit receives and comes from traffic signal system's signal, through with the address setting unit connection is separated and is appeared the affiliated address of signal, controls the operation of lamp, the lamp of keeping straight on, the lamp of turning right, count -down board and pedestrian's lamp respectively. Compared with the prior art, the utility model discloses simple structure, reasonable in design, the input of not only having saved traffic light controlgear uses 485 communications effectively to improve communication efficiency moreover, and is significant to road traffic's safety.
Description
Technical field
This utility model relates to road traffic technical field, is specifically related to a kind of traffic signal light control device based on 485 communications.
Background technology
Current most traffic signaling equipment controls traffic light and all uses the mode controlling AC220V power supply, the traffic lights in each direction under this control mode is required for a control line, even if traffic lights uses the mode for ground, it is also necessary to there is a ground wire, this is just construction and safeguards band
Carry out the biggest inconvenience.
Utility model content
For solving drawbacks described above, the purpose of this utility model is to provide a kind of traffic signal light control devices based on 485 communications, and not only drive circuit can be saved, and the volume of equipment can be designed less, decrease the distribution within semaphore simultaneously.
For reaching above-mentioned purpose, the technical solution adopted in the utility model is: a kind of traffic signal light control devices based on 485 communications, including traffic signaling equipment, described traffic signaling equipment is connected to the traffic grade machine of east, south, west, north all directions by AC220V power line and 485 order wires；Described traffic grade machine includes CPU control unit, electric current back production unit and scheme memory element, described CPU control unit is connected to power supply unit and address setting unit, and described CPU control unit receives the signal from described traffic signaling equipment, parse address belonging to signal by being connected with described address setting unit, control left-hand rotation lamp, craspedodrome lamp, right-hand rotation lamp, count-down board and the operation of pedestrian's lamp respectively；Described CPU control unit has been also respectively connected with electric current back production unit and scheme memory element, and the described CPU control unit phase mutual feedback on signal transmits with described electric current back production unit and described scheme memory element respectively.
Preferably, described electric current back production unit detects described left-hand rotation lamp, described craspedodrome lamp, described right-hand rotation lamp, described count-down board or the working condition of described pedestrian's lamp, and testing result feeds back to described CPU control unit.
The traffic grade machine of described east, south, west, north all directions is respectively equipped with different addresses.
This utility model is in running, the current operation phase is calculated by described traffic signaling equipment, treat that light color converts the moment, light color and the count-down board information of current East, West, South, North all directions is sent by 485 communication modes, after waiting that described traffic grade machine receives information, parsed the information of affiliated address by described address setting unit, then perform corresponding action according to communication protocol.
This utility model uses the control mode of 485 then to greatly simplify work progress, each direction has only to AC220V power line and traffic light just can be controlled by 485 order wires, owing to using this control mode, eliminate traffic signaling equipment and control drive circuit required during traffic lights, what the volume of traffic signal controlling machine can be designed simultaneously is less, decrease the distribution within semaphore, reduce the cost of equipment investment；The power supply unit being provided with provides power supply for described CPU control unit；The address setting unit being provided with is that Traffic signal control machine resolves the Signal Message Address from traffic light signals machine；After described Traffic signal control machine receives the light color information sent by semaphore, drive corresponding lamp bright or go out, after lamp lights, the electric current back production unit being provided with carries out current detecting to traffic lights in time, to judge whether this lamp damages, current detecting result is sent in time to traffic light signals machine, in order to traffic light signals machine again sends signal or takes other measures simultaneously.
Compared with prior art, this utility model simple in construction, reasonable in design, not only save the input of traffic light control equipment, and use 485 communications to be effectively increased communication efficiency, the safety for road traffic is significant.
Accompanying drawing explanation
Below according to drawings and Examples, structure and features of the present utility model is further described.
Fig. 1 is frame principle figure of the present utility model.
Fig. 2 is the frame principle figure during work of Traffic signal control machine described in this utility model.
Detailed description of the invention
Referring in accompanying drawing 1 and accompanying drawing 2, a kind of traffic signal light control devices based on 485 communications, including traffic signaling equipment, described traffic signaling equipment is connected to the traffic grade machine of east, south, west, north all directions by AC220V power line and 485 order wires；Described traffic grade machine includes CPU control unit, electric current back production unit and scheme memory element, described CPU control unit is connected to power supply unit and address setting unit, and described CPU control unit receives the signal from described traffic signaling equipment, parse address belonging to signal by being connected with described address setting unit, control left-hand rotation lamp, craspedodrome lamp, right-hand rotation lamp, count-down board and the operation of pedestrian's lamp respectively；Described CPU control unit has been also respectively connected with electric current back production unit and scheme memory element, and the described CPU control unit phase mutual feedback on signal transmits with described electric current back production unit and described scheme memory element respectively.
Preferably, described electric current back production unit detects described left-hand rotation lamp, described craspedodrome lamp, described right-hand rotation lamp, described count-down board or the working condition of described pedestrian's lamp, and testing result feeds back to described CPU control unit.
It is provided with communication protocol inside described traffic signaling equipment, comprise in described communication protocol and send data according to the fixing communication information, be respectively that east is left, east is straight, east people right, eastbound, eastern left count-down board, the straight count-down board in east, Nan Zuo, Nan Zhi, Nan You, south pedestrian, southern left count-down board, the straight count-down board in south, west is left, west is straight, right side, west, the people that heads west, western left count-down board, the straight count-down board in west, north is left, north is straight, north pedestrian right, northern, northern left count-down board, the straight information of count-down board in north.For traffic grade machine, east to address be 1, south to address be 2, west to address be 3, the north to address be 4, communication uses CRC check, changes light color every time, and semaphore sends 3 information, information interval 10ms.
This utility model is in running, the current operation phase is calculated by described traffic signaling equipment, treat that light color converts the moment, light color and the count-down board information of current East, West, South, North all directions is sent by 485 communication modes, after waiting that described traffic grade machine receives information, parsed the information of affiliated address by described address setting unit, then perform corresponding action according to communication protocol.
This utility model simple in construction, reasonable in design, not only save the input of traffic light control equipment, and use 485 communications to be effectively increased communication efficiency, the safety for road traffic is significant.
Described above is only preferred embodiment of the present utility model; above-mentioned specific embodiment is not to restriction of the present utility model; retouching, amendment or the equivalent that all those of ordinary skill in the art are made as described above, belongs to protection domain of the present utility model.
Claims (3)
1. traffic signal light control devices based on 485 communications, including traffic signaling equipment, it is characterised in that: described traffic signaling equipment is connected to the traffic grade machine of east, south, west, north all directions by AC220V power line and 485 order wires；Described traffic grade machine includes CPU control unit, electric current back production unit and scheme memory element, described CPU control unit is connected to power supply unit and address setting unit, and described CPU control unit receives the signal from described traffic signaling equipment, parse address belonging to signal by being connected with described address setting unit, control left-hand rotation lamp, craspedodrome lamp, right-hand rotation lamp, count-down board and the operation of pedestrian's lamp respectively；Described CPU control unit has been also respectively connected with electric current back production unit and scheme memory element, and the described CPU control unit phase mutual feedback on signal transmits with described electric current back production unit and described scheme memory element respectively.
Traffic signal light control device based on 485 communications the most according to claim 1, it is characterized in that: described electric current back production unit detects described left-hand rotation lamp, described craspedodrome lamp, described right-hand rotation lamp, described count-down board or the working condition of described pedestrian's lamp, and testing result feeds back to described CPU control unit.
Traffic signal light control device based on 485 communications the most according to claim 1, it is characterised in that: the traffic grade machine of described east, south, west, north all directions is respectively equipped with different addresses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620259260.5U CN205428220U (en) | 2016-03-31 | 2016-03-31 | Traffic signal light control device based on 485 communication |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620259260.5U CN205428220U (en) | 2016-03-31 | 2016-03-31 | Traffic signal light control device based on 485 communication |
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| CN205428220U true CN205428220U (en) | 2016-08-03 |
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| CN201620259260.5U Active CN205428220U (en) | 2016-03-31 | 2016-03-31 | Traffic signal light control device based on 485 communication |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113538930A (en) * | 2020-04-15 | 2021-10-22 | 华为技术有限公司 | Traffic signal control method, related equipment and system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113538930A (en) * | 2020-04-15 | 2021-10-22 | 华为技术有限公司 | Traffic signal control method, related equipment and system |
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