Piezoelectric magnetic-sensing traffic information comprehensive monitoring device

Abstract

The invention belongs to the field of detection of traffic information, particularly relates to a piezoelectric magnetic-sensing traffic information comprehensive monitoring device and aims to provide a device with low cost and more complete functions. The comprehensive monitoring device is characterized by comprising a sensor group, a signal conditioning device, a data acquisition system and a data processing system, wherein the sensor group is connected with the signal conditioning device; the signal conditioning device is also connected with the data acquisition system; the data acquisition system is connected with the data processing system; and the data processing system is connected with a data center. By adopting the sensor group consisting of a geomagnetic image sensor, a piezoelectric sensor and a foundation temperature sensor, acquired parameters are comprehensive and precise and can meet requirements of traffic regulation and control. By adopting the signal conditioning device consisting of a first-level amplifying circuit, a second-level amplifying circuit and a high-pass filter, the measurement precision is improved. By adopting a data filter processing technology and a dynamic sampling storage speed technology based on a real-time vehicle speed, the data calculation precision can be improved effectively.

Description

technical field [0001] The invention belongs to the field of traffic information detection, and in particular relates to a piezoelectric electromagnetic sensitive traffic information comprehensive monitoring device. Background technique [0002] In the field of traffic flow information detection, existing detection devices include magnetic induction vehicle collectors, wave frequency vehicle collectors, video vehicle collectors and floating car detection devices, etc. However, the above devices have some disadvantages and limitations in actual maintenance. [0003] The basic principle of the magnetic induction vehicle collector is to install a buried coil under the road surface, and when the vehicle passes by, the magnetic path of the coil will change, and the detector can obtain the condition of the vehicle on the road surface by detecting the electrical parameters of the coil. The magnetic induction vehicle collector is currently the cheapest device in the traffic flow det...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to solve the problems of high cost and lack of functions in the prior art, and provide a piezoelectric electromagnetic sensitive traffic information comprehensive monitoring device with low cost and complete functions

Images