Vehicle detectors, traffic jam detectors, and vehicle attribute detectors that can publish information

Abstract

The invention discloses a vehicle detection device for an intersection traffic light control system, and particularly relates to a device for releasing road information and detecting vehicle running conditions and attributes. The detection device consists of a vehicle-mounted high-frequency signal transmitting receiver mounted on a vehicle and a road high-frequency signal receiving transmitter mounted at an intersection. The electric signal output by the road high-frequency signal receiving transmitter is sent to a road signal light controller; and the road signal light controller controls the traffic light to direct the traffic. The device can form an adaptive traffic light control system to realize the green light for the road with vehicles and enable buses and special vehicles to go first; a traffic jam prevention device of the detection device can effectively prevent traffic jam at the intersection; a vehicle-mounted traffic light display device can display the lighting information of the traffic light and the road information for a driver to observe; and by use of a handheld vehicle attribute display, a law enforcer can conveniently check the basic information of the vehicle outside the vehicle.

Description

technical field [0001] The invention relates to a vehicle detector used in a traffic signal light control system at an intersection, in particular to a vehicle detector that uses an inductive detector to identify vehicle attributes, distinguish vehicle driving directions, and judge traffic jams based on the speed of the detected vehicle, and is installed in the vehicle for issuing roads. information display. Background technique [0002] An adaptive control system for traffic lights at intersections with vehicle detection functions such as figure 1 As shown, it is composed of a vehicle detector, a road traffic signal light controller 13 and a traffic signal light 14. Vehicle detector is made up of vehicle-mounted high-frequency signal transmitting receiver 11 and road high-frequency signal receiving transmitter 12. The vehicle detector provides information such as the category of vehicles traveling on the road, the direction of travel, and whether there is a traffic jam to...

AI Technical Summary

Problems solved by technology

[0010] The disadvantage of geomagnetic coil detection is that the detection range of a single detector is small, and the installation needs to dig the road

[0011] The disadvantage of infrared detection is that it cannot detect the driving direction of the vehicle and cannot detect the category of the vehicle

[0012] The disadvantage of ultrasonic detection is that the detection range is small and the type of vehicle cannot be detected

[0013] The disadvantage of video detection is that it cannot detect the driving direction required by the vehicle, and the equipment cost is high

[0014] The disadvantage of radio frequency detection is that the radio frequency signals sent by each vehicle at the same time will interfere with each other

Its disadvantage is that it is limited to the use of buses; when the bus arrives at the intersection, the driver needs to press the launch button, and use the method of pressing the launch button to control the countdown to avoid mutual interference with the signals transmitted by other buses, and the scope of use is small and inconvenient

Its shortcoming is that it is limited to the use of priority vehicles, and it does not disclose how to prevent the signals of vehicles from interfering with each other on the roads from interfering with each other

Its shortcoming is that it is limited to the release of traffic light information and cannot release road information

Its disadvantage is that it is difficult to separate the special sound from the alarm sound, which makes the circuit too complicated

Images