Underground intelligent vehicle detector

Abstract

The intelligent geographic vehicle detector consists of detecting unit, signal processing and logical processing unit for processing signal from the detecting unit through amplification, filtering, shaping, comparison, sensitivity regulation, environment compensation, A / D acquisition, automatic calibration, logic analysis, coding, storing, etc., signal conversion / transmission interface unit, power source and casing. It may have sub-detector connected. It may be used in detecting vehicle to obtain various dynamic and static information, including path, speed, parking time, running direction, etc. and is suitable for traffic management, vehicle monitoring, toll gate management, park management, etc.

Description

Technical field [0001] The invention relates to a detection device, in particular to a buried intelligent vehicle detector. The device can be used in a city or highway traffic command and management system and a vehicle static management system, and can be used for vehicle driving, side running, traffic flow, etc. Detection of vehicle dynamic or static information such as road occupation, traffic jam, parking time, etc., suitable for traffic light green wave belt control system, electronic police camera system, vehicle toll station system, vehicle access control system, parking lot management system and road network traffic monitoring and management System etc. Background technique [0002] With the development of economy and the improvement of people's living standards, cars are getting closer and closer to people's lives. Urban traffic and highway traffic jams occur from time to time, especially the traffic conditions of large and medium-sized cities have been of concern to the...

AI Technical Summary

Problems solved by technology

[0003] At present, the detectors of relevant vehicles mostly use passive infrared rays to detect vehicle signals and transmit them to the traffic command department after amplifying them, such as the "vehicle detection device" with the application number 98802297.4 of the patent Siemens Corporation; The coil is a detection device. When the vehicle passes by the large induction coil, the vehicle passes by or stops on the large induction coil, so that the inductance of the coil changes, so that the electrical signal output by the detection circuit composed of the coil and other circuits also changes accordingly. The detection signal of the vehicle is changed to form a vehicle detection signal, generally a frequency signal, which is sent to a processor for processing to obtain traffic information such as traffic flow. These detection devices have a single detection method for vehicles, incomplete detection information, large volume, inconvenient installation, and When the road surface is seriously damaged, it is easy to be damaged due to cracks in the road surface, etc.

In addition, the United States produces a permanent wireless vehicle recorder that uses vehicle magnetic imaging (VMI) technology to measure traffic flow. When the vehicle is detected at the location or parked near its installation location, it has limitations and deficiencies in function or performance, and cannot fully meet the monitoring, management, and command systems of urban traffic intersections, parking lots, and road network traffic conditions. Requirements for Vehicle Detection Devices

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