TDMA wireless terrestrial magnetism vehicle detector

Abstract

The present invention relates to the vehicle information acquisition technology field, in particular to a TDMA wireless terrestrial magnetism vehicle detector. The TDMA wireless terrestrial magnetism vehicle detector of the present invention comprises a terrestrial magnetism sensing module, a microprocessor, a TDMA emission / reception module and a voltage stabilization module. The terrestrial magnetism sensing module is used to obtain a terrestrial magnetism disturbance signal when a vehicle passes and send the terrestrial magnetism disturbance signal to the microprocessor, the microprocessor adopts a multi-hop time synchronization algorithm, is used to receive the terrestrial magnetism disturbance signal coming from the terrestrial magnetism sensing module and is in bidirectional communication connection with the TDMA emission / reception module, the TDMA emission / reception module is used to communicate with an external device, and the voltage stabilization module is used to supply power to the terrestrial magnetism sensing module, the microprocessor and the TDMA emission / reception module. The type of the microprocessor is MSP430G2553, the power consumption of the TDMA wireless terrestrial magnetism vehicle detector is reduced substantially, and the stability and the accuracy of the TDMA wireless terrestrial magnetism vehicle detector are improved. The TDMA wireless terrestrial magnetism vehicle detector of the present invention is strong in anti-interference capability, low in cost, simple in structure and accurate in measurement result.

Description

technical field [0001] The invention relates to the technical field of vehicle information collection, in particular to a TDMA wireless geomagnetic vehicle detector. Background technique [0002] In the intelligent transportation system, traffic information is the core content. The development and application of various functions of the entire system are closely related to traffic information. The collection, application, and processing of traffic information have realized traffic management from simple static to intelligent dynamic. As the main source of traffic information in intelligent transportation systems, vehicle detectors are an important basis for urban traffic planning and traffic management, and can obtain current traffic information in real time. [0003] However, as the number of vehicles in the current urban traffic increases, traditional vehicle detectors can no longer meet the needs. Traditional vehicle detectors have weak anti-interference ability and are e...

AI Technical Summary

Problems solved by technology

[0003] However, as the number of vehicles in the current urban traffic increases, traditional vehicle detectors can no longer meet the needs. Traditional vehicle detectors have weak anti-interference ability and are easily affected by the environment, resulting in inaccurate measurement results.

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