Signal machine clock verification method based on intersection identity detection data

Abstract

The invention discloses a signal machine clock verification method based on intersection identity detection data. The signal machine clock verification method based on intersection identity detectiondata includes the steps: acquiring the intersection identity detection data and the signal machine lamp state recorded data; based on the intersection identity detection data, obtaining a car passingtime detection sequence of each lane, dividing vehicle groups, reversely deriving the signal machine lamp state switching time, and taking the signal machine lamp state switching time as the lane level reverse derivation result; reversely deriving the signal machine phase operating time, collecting the reversely derived lamp state switching time of each lane of each phase, and then obtaining the lamp state switching time of the phase; and according to the intersection identity detection data, reversely deriving the signal control scheme lamp state switching time, comparing the reverse derivation result with the lamp state switching time recorded by the signal machine so as to determine whether the clock of identity detection equipment at the intersection, the clock of the signal machine and the clock of data storage equipment are consistent. The signal machine clock verification method based on intersection identity detection data can solve the problem that the detection data cannot bematched and verified because of the clock difference between different devices and the operation system, and at the same time does not generate accumulative error.

Description

technical field [0001] The invention relates to the field of traffic detection, in particular to a signal machine clock verification method based on intersection identity detection data. Background technique [0002] With the continuous enrichment of traffic detection methods, the scale of multi-source traffic data is growing at an extremely fast speed, and the urban traffic security intersection identity detection and monitoring system has become an important part of my country's urban traffic management system. The road intersection identity detection and monitoring system uses high-definition cameras installed on the road, adopts advanced photoelectric technology, image processing technology and pattern recognition technology to monitor and capture passing vehicles in real time around the clock, and can obtain lane-level vehicle identity information, flow distribution etc. The intersection identity detection system can be used as an important data source and basic techni...

AI Technical Summary

Problems solved by technology

[0003] In the analysis process of the intersection identity detection data, data from other different systems (signals, etc.) will inevitably be involved, and the clocks of the intersection identity detection detection equipment, signal equipment, and corresponding data storage Clock differences between equipment and working systems lead to inaccurate data, and may even provide wrong guidance for traffic information analysis

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