Vehicle detector based on geomagnetic principle and shell protection management method

Abstract

The invention belongs to the technical field of intelligent traffic, and particularly relates to a vehicle detector based on a geomagnetic principle and a shell protection management method. The vehicle detector comprises an outer cavity, an inner cavity and a detector assembly. The detector assembly comprises an antenna, a detector and a battery. The outer cavity and the inner cavity are respectively and independently sealed; the outer cavity comprises an outer cavity base and an outer cavity cover which are connected in a sealed mode, the inner cavity comprises an inner cavity base and an inner cavity cover which are connected in a sealed mode, and the outer cavity base and the outer cavity cover are sealed in a female-male nesting mode, including the female base and the male cover or the male base and the female cover. A drying agent is used for maintaining the low relative humidity of the inner cavity where the detector is located and the relative humidity difference between the inner cavity and an outer cavity, meanwhile, a certain level of positive pressure of the inner cavity is maintained in the sealing process, and potential leakage of the inner cavity and the outer cavity is judged and reported by monitoring the relative humidity and pressure of the microenvironment where the detector is located, and function and performance abnormities related to the protection failure of the vehicle detector are further prevented.

Description

technical field [0001] The invention belongs to the technical field of intelligent transportation, and in particular relates to a vehicle detector based on the principle of geomagnetism. Background technique [0002] The vehicle detection system based on geomagnetic principle mainly includes several aspects such as geomagnetic vehicle detector, relay transceiver and background intelligent data processing server. The wireless geomagnetic vehicle detector buried in the road is used to detect the existence and passage of vehicles, and then uses low-power wireless communication technology to transmit the detection data to the nearby relay transceiver in real time, and the relay transceiver further transmits the data to the background intelligence data processing server. [0003] Vehicle detectors are the primary link in data collection, so the importance of product quality and reliability is self-evident. According to comprehensive market feedback, anti-interference performanc...

AI Technical Summary

Problems solved by technology

[0004]It is easy to achieve the performance of product shell protection through the dustproof and waterproof test, but the actual application environment in the transportation field is far more complicated and harsh than the simulated environment of the test

On the one hand, a large number of traffic flows and repeated extrusion of heavy vehicles can cause slight deformation of the shell and damage to the sealing part in a short period of time; secondly, in rainy areas in the south, soft soil areas, and hilly mountainous areas, the overall slippage of the roadbed will affect the shell. The casing causes further damage; What's more, the autumn-winter and winter-spring seasons in the north are frequent seasons of road damage, and the pressure and displacement generated by the freeze-thaw cycle and frost heaving are also damage to the protection of the casing of the buried vehicle detector. performance killer

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