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A Speeding Discrimination Method Based on Hidden Markov Road Network Matching

A technology of road network matching and discrimination method, applied in the field of physics, can solve the problems of low sampling rate, affecting vehicle speeding judgment, satellite positioning signal drift, etc. Effect

Active Publication Date: 2017-10-03
上海经达信息科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a kind of overspeed discrimination method based on Hidden Markov Road Network Matching, said this overspeed discrimination method based on Hidden Markov Road Network Matching will solve the drift and Low sampling rate affects the technical problem of vehicle overspeed judgment

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  • A Speeding Discrimination Method Based on Hidden Markov Road Network Matching
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  • A Speeding Discrimination Method Based on Hidden Markov Road Network Matching

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Embodiment 1

[0031] Such as figure 1 As shown, a kind of overspeed discrimination method based on hidden Markov road network matching of the present invention comprises a process of obtaining positioning data from satellites, and in the process of obtaining positioning data from satellites, the following steps are included:

[0032] Step 1: Use the hidden Markov road network matching algorithm to find out the best driving section of the vehicle;

[0033] Step 2: use the electronic map to find out the detailed information of the road section where the vehicle travels, and find the maximum speed of the road section from it.

[0034] Step 3: Acquiring the vehicle speed from the positioning data obtained from the satellite, and comparing the vehicle speed with the speed limit of the road section, and judging whether the vehicle is speeding or not.

[0035] Further, the step one includes the following steps:

[0036] 1. Calculate the probability of observation:

[0037] anchor point zt Indee...

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Abstract

The invention discloses an overspeed discrimination method based on hidden Markov road network matching. On the basis of a conventional satellite positioning device, the method achieves the real-time monitoring of the running speed of a vehicle, can judge whether the vehicle at a road segment is overspeed or not, and reduces the cost of vehicle monitoring on the basis of maintaining high accuracy. The method can effectively reduce the positioning error, and can find the optimal matching path of the running of the vehicle more accurately. The method enables the running speed of the vehicle to be compared with the maximum running speed at the road segment according to a built national road speed limit database, obtains a result whether the running vehicle is overspeed or not, and reminds a driver that the vehicle is overspeed through a navigation device if the vehicle is overspeed.

Description

technical field [0001] The invention relates to the field of physics, in particular to measurement technology, in particular to an overspeed discrimination method based on hidden Markov road network matching. Background technique [0002] With the continuous improvement of living standards, the number of cars is also increasing. The problem is that the number of vehicle accidents is also rising. Vehicle speeding is the most common and most harmful traffic violation, and more than 90% of major traffic accidents are related to speeding. Because speeding greatly prolongs the braking distance and greatly shortens the time to deal with crises, drivers are often caught off guard when they encounter danger. At the same time, speeding is also easy to make people tired, because the opportunities for overtaking increase, the distance between vehicles is shortened, and the energy consumption of the driver's psychology and body is greatly increased. Speeding also increases the workin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08G1/052
CPCG08G1/052
Inventor 罗赞文文巨峰穆祥强陈晓洁
Owner 上海经达信息科技股份有限公司