Vehicle mounted device used for long distance vehicle recognition system

Abstract

The present invention relates to a vehicular device of a long-distance vehicle identifying system, and comprises a SCM, a power supply module, a card-reading module for a nor-source card, a microwave transmitting module, a serial port communicating module, a watchdog, a storage module, a wireless receiving module and an under-voltage indicating module. The SCM is respectively connected with the microwave transmitting module, the serial port communicating module, the card-reading module for a nor-source card, the watchdog, the storage module and the wireless receiving module. The power supply module is respectively connected with the wireless receiving module and the under-voltage indicating module. The wireless receiving module is respectively connected with the SCM, the power supply module, the card-reading module for a nor-source card, the microwave transmitting module, the serial port communicating module, the watch dog and the storage module. The under-voltage indicating module is connected with the wireless receiving module and the power supply module. The present invention has the advantages of energy conservation, long identifying distance, low cost, high performance and reliable communicating identification.

Description

technical field [0001] The invention relates to the technical field of vehicle identification, in particular to a vehicle-mounted device used in a long-distance vehicle identification system. Background technique [0002] Most of the existing domestic long-distance vehicle identification technologies use 125KHZ or 13.65MHZ medium and low frequency for identification, but the effective identification distance is short. [0003] There is also a long-distance vehicle identification system mainly used in highways, bridge toll gates, etc., which can realize long-distance identification and non-stop passing of passing vehicles. The main technology uses 935MHZ high-frequency induction technology or 2.4GHZ microwave technology products to realize long-distance Distance identification, the identification card is an active card, and the identification distance is longer. Since the active card is thicker than the passive card, and the identification card must be installed on the front...

AI Technical Summary

Problems solved by technology

[0002] Most of the existing long-distance vehicle identification technologies in China use 125KHZ or 13.65MHZ medium and low frequency for identification, but the effective identification distance is short

[0003] There is also a long-distance vehicle identification system mainly used in highways, bridge toll gates, etc., which can realize long-distance identification and non-stop passing of passing vehicles. The main technology uses 935MHZ high-frequency induction technology or 2.4GHZ microwave technology products to realize long-distance Distance identification, the identification card is an active card, and the identification distance is longer

Since the active card is thicker than the passive card, and the identification card must be installed on the front windshield of the car, it is greatly affected by the quality of the car body and the weather, resulting in unstable recognition distance and troublesome adjustment of the direction and angle of wireless recognition. , easy to be interfered by the signal of the opposite lane or interfere with the signal of the opposite lane, and its installation position is also easy to affect the driver's sight

In addition, since the active card is powered by a battery, frequent replacement of the battery also brings trouble and financial burden to the owner

Moreover, these products are imported from abroad, so the system is expensive, and once a fault occurs, it is difficult to repair, so there are not many domestic applications

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