A motor vehicle characteristic data acquisition analyzer and analysis method

Abstract

The invention relates to the technical field of intelligent traffic annular coil detection, in particular to a device and a method for data acquisition, calculation and analysis of various characteristics of a motor vehicle. Signal output ends of coils on a circuit board are connected with signal input ends of oscillators respectively. Signal output ends of the oscillators are connected with a signal input end of a CPLD (complex programmable logic device) of a digital integrated circuit respectively. A signal output end of the CPLD is connected with a signal input end of a CPU (central processing unit). A signal output end of the CPU is provided with a relay signal output circuit, two serial interface modules SP3223EEY and a TTL (transistor-transistor logic) level signal output circuit, and data is displayed on a computer to facilitate analysis through state inducted by coils by a vehicle. The device is free of interference, high in sampling frequency and large in sampling quantity, so that detection of type of the vehicle is accurate. Responding time of a detector is short, so that speed detection for the vehicle is more accurate. The device can be applied to multiple occasions of detection of traffic violation actions of motor vehicles, intelligent monitoring of various levels of road vehicles, detection of vehicles at charging stations and various entrances and exits and the like.

Description

[technical field] [0001] The invention relates to the technical field of loop coil detection for intelligent transportation vehicles, in particular to an instrument and method for collecting, counting and analyzing various characteristic data of motor vehicles. [Background technique] [0002] With the development of the domestic intelligent transportation industry, the application scope of motor vehicle and traffic information detection and analysis technology has expanded accordingly, and the basic information required by comprehensive analysis and management systems such as traffic violation management, road flow monitoring, passenger flow analysis on specific occasions, and traffic incident detection All rely on the detection and analysis of motor vehicle characteristic data. [0003] At present, the motor vehicle information detection modes at home and abroad mainly include toroidal coil, radar, microwave, infrared, laser, and ultrasonic. Due to the limitation of technic...

AI Technical Summary

Problems solved by technology

[0005] If the synchronous vibration technology is used instead, the above problems can be avoided, but none of the existing detectors at home and abroad can overcome the mutual interference problem of the analog oscillators. Once interference occurs, the coil data will not truly reflect the passing status of the vehicle, resulting in misjudgment. In severe cases, the vehicle detector cannot be used

Images