Vehicle state sensor and intelligent traffic light system based on improved sisar processing method
A processing method and vehicle status technology, applied in the field of intelligent transportation, can solve the problems of affecting road environment beautification, destroying the road surface, paying costs, etc., achieving the effects of reducing maintenance costs and construction difficulties, high reliability, and large detection range
Active Publication Date: 2019-04-23
王天贝
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Problems solved by technology
Excavation will damage the road surface, and the way of overhead lines will affect the road beautification
both have a cost
Method used
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[0043] The technical solution of the present invention will be further introduced below in conjunction with the accompanying drawings and specific implementation methods.
[0044] Firstly, the working principle of the sensor in this specific embodiment is introduced. When the satellite navigation signal is irradiated on the road and the vehicle, scattered echoes will be generated. The sensor programmatically adjusts the direction of the receiving beam, selectively receives the scattered echoes along the driving direction of the vehicle, and then uses the improved SISAR processing method for signal processing on the scattered echo signals. Realize the detection of whether the vehicle on the road is running or stopped, and give the information of the smooth section and the congested section of the road. Such as figure 1 As shown, S is the direction of the lane, Δs i Is a small section of the lane, just within the receiving beam of the device. The satellite navigation signal s...
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The invention discloses a vehicle state sensor based on an improved SISAR processing method. The vehicle state sensor is composed of a receiving antenna, a down conversion module, an A / D sampling module, a signal processing module, an output module and a control module. The receiving antenna is used for receiving an echo signal obtained by scattering after irradiation of a satellite navigation signal on a vehicle. The down conversion module is used for carrying out down conversion processing on the echo signal received by the receiving antenna. The A / D sampling module is used for converting the echo signal after down conversion processing from an analog signal into a digital signal. The signal processing module is used for carrying out improved SISAR processing on the digital signal obtained by the A / D sampling module and determining whether a vehicle image can be obtained; if so, the vehicle is determined to be moving; and if not, the vehicle is determined to be static. The output module is used for outputting a processing result of the signal processing module. And the control module is used for controlling the receiving antenna and the output module. In addition, the invention also discloses an intelligent traffic light system. Therefore, the maintenance cost and construction difficulty can be reduced effectively.
Description
technical field [0001] The invention relates to the field of intelligent transportation, in particular to a vehicle state sensor and an intelligent traffic light system based on an improved SISAR processing method. Background technique [0002] Overwhelmed by urban traffic, roads have become an environmental resource cherished by society. The concept of smart travel and intelligent transportation has made people see the dawn of solving the problem of traffic congestion. As an important component of intelligent transportation, the intelligent traffic light system collects and analyzes the real-time data of road traffic flow, and then according to actual needs, the intelligent traffic light system adjusts the time interval of changing traffic lights by itself, so as to overcome the unbalanced traffic flow and effectively mine road capacity. [0003] People have tried to use video to perceive the method of vehicle information. Video perception is to obtain vehicle informatio...
Claims
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IPC IPC(8): G01S13/90G08G1/08
CPCG08G1/08G01S13/904G01S13/9064G01S2013/464
Inventor 王天贝方艺舒罗融宇王林
Owner 王天贝