Application scenarios and modes of Bonn instrument microwave vehicle detector

1) Urban transportation

In the construction of smart cities or safe cities, in order to achieve intelligent scheduling and real-time management of urban traffic, it is necessary to collect traffic information at important intersections, including macro traffic flow, average speed, and composition of major vehicle types.

This device will be installed in four directions at important intersections to collect traffic information and transmit it to the traffic command center through fiber optic or wireless links, achieving real-time monitoring of traffic information, adaptive traffic signal control, and traffic guidance functions.

Power and communication lines can be connected to traffic signals through underground pipelines or overhead means. Powered by traffic signals, and traffic information uploaded to the monitoring center through traffic signals

a) Fixed Traffic Information Collection System

b) Mobile Traffic Information Collection System

c) Road operation management system

d) Adaptive Traffic Signal Control System

e) Traffic guidance system

f) Road construction and operation decision-making and support system

2) Expressway

In intercity transportation, real-time traffic flow detection between highways in different directions is extremely important in intelligent traffic guidance. BN-M-11 intelligent traffic microwave detectors can be installed in different sections of highways to achieve real-time monitoring of traffic information, road construction and operation decision-making, and other functions.

At present, fast internal and external transportation routes are particularly important in large and medium-sized cities. In order to avoid congestion of vehicles during morning and evening rush hours, real-time monitoring of vehicle information on fast internal and external highways can be achieved, providing decision-making basis for transportation departments to conduct traffic early warning and traffic flow diversion. Maximize the rational planning and allocation of transportation.

For existing roads, solar panels can be used for power supply, and traffic information can be transmitted wirelessly through serial ports (CDMA, GPRS).

a) Fixed traffic information collection system;

b) Mobile traffic information collection system;

c) Road operation management system;

d) Road construction and operation decision-making and support system;

Technical characteristics of digital high-definition dual beam microwave vehicle inspection device

1）Adopting digital high-definition radar. High definition radar refers to a radar that can clearly distinguish vehicles passing through its range. High definition depends on the bandwidth of the radar, and the wider the bandwidth, the higher the scanning frequency emitted by the radar, which can clearly distinguish vehicles.

2）Launch per second100Ten thousand radar waves can accurately locate vehicles and detect partially obstructed vehicles across obstacles such as anti glare panels, trees, and metal guardrails in the central isolation zone, greatly reducing the impact of the isolation zone on detection accuracy.

3）Bonn InstrumentBN-M-11 V2Suitable for any lateral displacement and capable of detecting both directions simultaneously22Traffic data for each lane, including traffic flow, bicycle speed, average speed, vehicle classification, lane occupancy rate, headway, distance between vehicles, and other traffic data. Principle of detecting bicycle speed: project two microwave bands on the detection road surface, as shown in the following figuret1andt2There are two microwave band corner lines, which are parallel and have a certain distance between them, so the vehicle passes through themt1tot2The time can accurately calculate the speed of the vehicles passing throughV=D/(t1-t2)Meanwhile, according tot1tot2Accurately calculate the length of the vehicle based on the time. As shown in the figure below:

4）Bonn InstrumentBN-M-11 V2It is based on vehicle detection, and no matter where the vehicle is driving within the detection area, only one vehicle will be displayed. Even if it is driving between two lanes, it will not detect two vehicles or cannot detect vehicles like simulation equipment, greatly improving the accuracy of single lane traffic flow.

5）Bonn InstrumentBN-M-11 V2It can automatically recognize the direction of vehicle travel, especially suitable for information collection in tidal lanes. According to the traffic flow status in different directions, the control center can timely use remote control methods to control the signs. If a computer networked intersection signal is implemented, the automatic recognition system can also identify and automatically adjust the number of lanes open to traffic, in order to achieve good road traffic capacity, reduce local traffic pressure, and alleviate traffic congestion.