Vehicle following alarm system

Abstract

The invention discloses a vehicle following alarm system, which comprises a vehicle detector, and is characterized in that the vehicle detector carries out detection to obtain a sampling signal and a relay signal, and transmits the relay signal to an automatic charging system; a sampling signal synchronously triggers the time delay relay, the excitation time of the signal is timed through the arrangement of the single chip microcomputer, if the excitation time does not exceed a preset value, the triggering is judged to be normal triggering, the calculator returns to zero, and if the excitation time exceeds the preset value, the single chip microcomputer of the time delay relay judges the triggering to be abnormal transaction. The single-chip microcomputer generates time sequence triggering, enters a callback state, and transmits a signal of the state to the next level of Internet-of-Things module; and the system is low in equipment cost, simple to install, good in concealment, silent in triggering, free of influence on passerby, free of change of charging system equipment, capable of supporting router networks and capable of being used massively and densely.

Description

technical field [0001] The invention relates to the technical field of vehicle security, in particular to a vehicle tailgating alarm system. Background technique [0002] With the implementation of the automatic toll collection system and the non-stop toll collection (ETC) system, the personnel on duty at the toll station have been greatly reduced, and the situation of vehicles evading tolls has occurred from time to time, which has brought losses to the country, groups, and companies. At night, although the toll station has a complete monitoring system, finding out the toll-evading vehicles among the tens of thousands of vehicles is tantamount to finding a needle in a haystack. Trailing toll evasion is to use the delay characteristics of vehicle detectors and ground sense coils to cheat within the acceptable range of the toll collection system. When this happens, the toll collection system cannot accurately identify the trailing vehicle, and the trailing vehicle and the pre...

AI Technical Summary

Problems solved by technology

[0002] With the implementation of the automatic toll collection system and the non-stop toll collection (ETC) system, the personnel on duty at the toll station have been greatly reduced, and the situation of vehicles evading tolls has occurred from time to time, which has brought losses to the country, groups, and companies. At night, although the toll station has a complete monitoring system, finding out the toll-evading vehicles among the tens of thousands of vehicles is tantamount to finding a needle in a haystack

Trailing toll evasion is to use the delay characteristics of vehicle detectors and ground sense coils to cheat within the acceptable range of the toll collection system. When this happens, the toll collection system cannot accurately identify the trailing vehicle, and the trailing vehicle and the previous vehicle It is judged as a transaction, and there is no abnormality in this transaction, especially the trailing vehicles are mostly vehicles from other provinces, which increases the difficulty of inspection and evidence collection at the entrance

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