Vehicle-mounted signal lamp receiving device

Abstract

The invention provides a vehicle-mounted signal lamp receiving device comprising a wireless transceiver unit, a processing unit and an output unit. The wireless transceiver unit connected to an internet network by a wireless network receives a signal lamp information issuing interface message, sends the message to a processing unit, and sends a signal lamp state query message according to an instruction of the processing unit. According to current position coordinate, vehicle speed, and direction information, measured by the GPS unit, the processing unit obtains a position coordinate of an intersection in front of a driving vehicle and road name information by combining an electronic map, packages the signal lamp state query message, and sends the message to the wireless transceiver unit for sending; and the signal lamp information issuing interface message is parsed to obtain state information and position information of the signal lamp of the intersection in front of the vehicle, and then the information is sent to the output unit. The output unit outputs the state information of the signal lamp of the intersection in front of the vehicle in an image, sound, or electronic interface mode or in a combined mode. With the device, the driver can get information of a signal lamp state of an intersection in front of a vehicle and a changing trend timely, so that the vehicle can be driven by using an optimal operation way.

Description

technical field [0001] The invention relates to the field of traffic signal control, in particular to the field of intelligent traffic control which comprehensively applies wireless communication technology, computer technology and traffic signal control technology. Background technique [0002] With the continuous expansion of the city scale and the increasing number of motor vehicles in the city, the pressure on urban road traffic is increasing. In order to ensure road traffic safety and improve traffic efficiency, traffic lights are generally used at all level intersections in cities to direct traffic in all directions to pass or stop. Specifically, by setting the period, green signal ratio and phase difference of the traffic lights at the intersection, the traffic flow in each direction is assigned the right of way in time. Traffic lights have developed from a single-point mode where each intersection is managed independently at the beginning to a "wire control" mode wh...

AI Technical Summary

Problems solved by technology

Another example is that when a driver passes on one road, he cannot predict the traffic and signal lights at the next intersection, which often causes unnecessary repeated acceleration and braking operations, which not only reduces fuel efficiency, but also indirectly causes more environmental pollution

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