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Traffic signal instrument

A traffic signal and host technology, applied in the field of traffic signals, can solve the problems of not verifying whether the extension is correctly received, inaccurate communication, unable to analyze the failure of wireless traffic signals, etc., to prevent traffic accidents, strong anti-interference ability, The effect of avoiding the green conflict of road signals

Active Publication Date: 2016-06-15
BAODING VICTORY TRAFFIC FACILITIES ENG CO LTD
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. Single-band communication, if there is an interference source close to the communication frequency band in the application environment, it is easy to cause inaccurate communication
[0005] 2. The host unilaterally sends communication commands without verifying whether the extension is received correctly, which is prone to green conflicts
[0006] 3. Unable to analyze the fault of wireless traffic signal
[0007] 4. It is not possible to intuitively and clearly analyze which direction the wireless traffic signal is faulty

Method used

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Embodiment Construction

[0019] The traffic signal machine of the present invention will be further specifically described below in conjunction with the accompanying drawings.

[0020] Such as Figure 1 to Figure 2 Shown, the present invention realizes technical purpose by following way:

[0021] 1. Select two wireless communication frequency bands. When there is an interference source close to one of the frequency bands in the use environment, the wireless communication of the other frequency band will not be affected. When working, the host has two independent serial ports, serial port 1 through the wireless module M0, and serial port 3 through the wireless module M1 to send traffic commands at the same time, if there is interference in the frequency band of the module M0, the other frequency band module M1 will not be interfered, and it can ensure that the commands are transmitted by M1 Similarly, if there is interference in the frequency band of the module M1, the module M0 of another frequency ...

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Abstract

The invention relates to a traffic signal instrument, and particularly relates to a traffic signal instrument based on wireless communication. The traffic signal instrument comprises a host. The traffic signal instrument comprises a first wireless module and a second wireless module. The traffic signal instrument performs wireless communication based on dual bands. When the frequency band of the first wireless module is interfered, the instruction of the host can be transmitted through the frequency band of the second wireless module; in contrast, when the frequency band of the second wireless module is interfered, the instruction of the host can be transmitted through the frequency band of the first wireless module. Dual-band wireless communication is adopted so that anti-interference capability is higher and reliable indication of traffic signals can be more effectively guaranteed. Wireless communication handshaking and fault detection functions are additionally arranged so that green conflict of road signal lamps can be avoided and traffic accidents can be effectively prevented.

Description

technical field [0001] The invention relates to a traffic signal technology, in particular to a traffic signal based on wireless communication. Background technique [0002] Traffic signal machine is one of the important components of modern urban traffic system, mainly used for the control and management of urban road traffic signals. The traffic signal is composed of the main LCD screen, CPU board, control board, light group driver board with optocoupler isolation, switching power supply, button board and other functional module plug-in boards, as well as power distribution boards, terminal blocks, etc. [0003] The current traffic signal products on the market mainly have the following deficiencies: [0004] 1. For single-band communication, if there is an interference source close to the communication frequency band in the application environment, it is easy to cause inaccurate communication. [0005] 2. The host unilaterally sends communication commands without verify...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/097
CPCG08G1/097
Inventor 李军杨建方王茜
Owner BAODING VICTORY TRAFFIC FACILITIES ENG CO LTD