Traffic signal lamp state monitoring system based on single-chip microcomputer
A state monitoring system and traffic signal light technology, applied in the field of intelligent transportation, measurement and control technology, to achieve the effect of strong scalability, low price and high reliability
Active Publication Date: 2019-12-13
苏州云控车路科技有限公司
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In general, most of them are based on traditional image processing methods; but at present, convolutional neural networks with strong learning capabilities are also used for recognition, but such methods often require a large number of training samples to avoid the risk of overfitting
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[0029] A single-chip microcomputer-based traffic signal light status monitoring system, the system includes access terminal selection, signal acquisition circuit design, single-chip signal processing and measurement, multi-channel access line planning scheme, the system can be directly connected with the traditional traffic signal machine When the traffic signal light is working, the signal can be collected to obtain the required data and send it to the receiving end of the unmanned vehicle;
[0030] Include the following steps:
[0031] 1) The selection of the access terminal is located at the connection between the intersection controller and the light line inside the signal machine;
[0032] 2) The signal acquisition circuit converts the sinusoidal high voltage at the connection of the light wire into a square wave low voltage that can be processed by the single-chip microcomputer;
[0033] 3) A single-chip microcomputer counts the square wave to obtain the corresponding s...
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The invention relates to a traffic signal lamp state monitoring system based on a single-chip microcomputer. The working method of the system comprises the following steps: (1) selecting a lamp control line group of a traffic signal controller as an access point of the whole monitoring system; (2) designing a signal acquisition circuit, detecting the voltage inside a signal machine, and convertingsignals into square waves which can be processed by a single-chip microcomputer through voltage reducing, shaping and the like; (3) measuring the period of the signals and the count value of square waves at any moment through the single-chip microcomputer, calculating the remaining time at any moment through a formula that the remaining time is equal to the difference between the on duration of the signal lamps and the count value at the moment, and determining a channel of street lamps to which the remaining time belongs by marking a corresponding state on the channel; and (4) simultaneouslyconnecting multiple signal lamp lines to the monitoring system to obtain the states of the traffic lamps in the south-north direction and the east-west direction at the moment. Compared with the existing v2x-based and camera-based signal lamp state identification technologies, the method has the advantages of low cost, high detection precision, high stability and the like.
Description
technical field [0001] The invention belongs to the field of measurement and control technology and intelligent transportation technology, and in particular relates to a single-chip microcomputer-based traffic signal light state monitoring system. Background technique [0002] ITS (Intelligent Transportation) is a real-time, accurate, Efficient transportation integrated management and control system. It is divided into vehicle control system, traffic monitoring system, vehicle management system, travel information system and other subsystems. The traffic monitoring system is similar to an airport's aviation controller, which will establish a rapid communication link between roads, vehicles and drivers. Where traffic accidents occur, where traffic is congested, and which road is the smoothest, the system will provide drivers and traffic management personnel with the fastest speed. [0003] The detection of signal lights is a major problem in traffic detection technology. T...
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Login to View More IPC IPC(8): G08G1/097
CPCG08G1/097
Inventor 王平章霖鑫
Owner 苏州云控车路科技有限公司