Geomagnetic threshold value adjusting method and geomagnetic threshold value adjusting system

Abstract

The invention relates to a geomagnetic threshold value adjusting method and a geomagnetic threshold value adjusting system. The geomagnetic threshold value is characterized in that step a, a geomagnetic sensor is used to acquire geomagnetic data corresponding to a detection point, and is used to forward the geomagnetic data to a geomagnetic detection system by a relay; step b, the geomagnetic detection system is used to read the geomagnetic data transmitted by the relay, and is used to determine the device state of the geomagnetic sensor corresponding to the geomagnetic data according to the original geomagnetic data, and is used to compare the determination result with the device state of the geomagnetic sensor returned by a hardware logic determination unit; step c, the geomagnetic data can be added to the recent processing list of the corresponding detection point, and the error of the recent processing list can be calculated, and whether the error of the recent processing list is greater than the preset acceptable error can be determined, and when the error of the recent processing list is greater than the preset acceptable error, the geomagnetic threshold value corresponding to the geomagnetic sensor can be recalculated. According to the invention, the identification accuracy of the geomagnetic sensor state can be improved, and the hysteresis of the geomagnetic threshold value adjustment can be eliminated.

Description

technical field [0001] The invention belongs to the technical field of geomagnetic threshold processing, and in particular relates to a geomagnetic threshold adjustment method and system. Background technique [0002] The geomagnetic vehicle detector is a sensor installed on the road surface, which is specifically used for monitoring vehicle flow and speed, controlling traffic signal transformation and monitoring and recording traffic violations. The geomagnetic vehicle detector is an infrastructure for real-time monitoring of vehicle dynamics and implementation of intelligent traffic management. The data acquisition system plays a very important role in the traffic monitoring system. The geomagnetic sensor is a key part of the data acquisition system, and the performance of the sensor plays a decisive role in the accuracy of the data acquisition system. The geomagnetic receiver (relay device) is mainly used to cooperate with the geomagnetic terminal to complete data recept...

AI Technical Summary

Problems solved by technology

[0003] In the existing technology, the geomagnetic detection system often cannot timely and effectively adjust the geomagnetic threshold model according to the change of the environmental state, and the recognition accuracy is limited.

In the case of large environmental changes (such as a heavy truck temporarily coming around the equipment), the error rate is high, which limits the application range of the existing geomagnetic detection system

Images