Speed estimation method

A technology with poor speed and strength, applied in the field of speed estimation, can solve the problems of insufficient number of GPS detection vehicles, inability to accurately display the speed conditions of different road sections, affecting traffic flow and speed, and achieve the effect of reducing additional erection and maintenance costs

Inactive Publication Date: 2013-06-19
NAT PINGTUNG UNIV OF SCI & TECH
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Problems solved by technology

However, when reporting traffic information through GPS detection vehicles, there are usually problems such as insufficient number of GPS detection vehicles or insufficient time samples. Congestion, while measuring traffic information, it also affects the original traffic flow and speed

Method used

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Embodiment Construction

[0032] In order to make the above-mentioned and other objects, features and advantages of the present invention more comprehensible, the preferred embodiments of the present invention are specifically cited below, together with the accompanying drawings, as follows:

[0033] Please refer to figure 1 As shown, the preferred embodiment of the speed estimation method of the present invention includes an arithmetic processing device 1 , several base stations 2 and several communication devices 3 . The computing processing device 1 can communicate with several base stations 2 to obtain a signal data of the several base stations 2. The computing processing device 1 is an computing processor such as a computer, and can perform data temporary storage and computing operations. The plurality of communication devices 3 can exchange data with several base stations 2 , and each of the communication devices 3 is respectively installed in a mobile body, so that the mobile body can exchange ...

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Abstract

A speed estimation method including a reference value establishing step, an actual value establishing step, an approximate location calculating step, a weight location calculating step, a weight location determining step and a speed calculating step is disclosed. The reference value establishing step determines a plurality of training locations and establishes a reference signal strength set for each training location. The actual value establishing step establishes an actual signal strength set of a communication device at a time point. The approximate location calculating step calculates a plurality of signal strength differences according to the actual signal strength set and the reference signal strength set, and generates a plurality of approximate locations. The weight location calculating step calculates a weight location of the communication device. The weight location determining step determines whether two weight locations are obtained. The weight location determining step calculates a speed of the communication device.

Description

technical field [0001] The invention relates to a speed estimation method, in particular to a speed estimation method for estimating vehicle speed by using signal strength between a mobile phone and a base station. Background technique [0002] The speed of driving can show the smoothness of driving in an area. In order to ensure that a highway can maintain a relatively high traffic smoothness, government agencies must accurately grasp the driving speed of each road section, so as to detect the location of road conditions as early as possible, and carry out appropriate traffic control or route guidance, so that overcrowded traffic can be effectively obtained. soothing. [0003] In the method for obtaining traffic road condition information, it is more common to set several vehicle speed detectors. The several vehicle speed detectors are respectively arranged at several fixed points of the highway, and the vehicle speed on each road section is judged through the vehicle spe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/00H04W64/00
CPCH04W64/006G01S11/02G01S11/06
Inventor 龚旭阳罗济群陈志华林邦晔林淳皓刘彦似
Owner NAT PINGTUNG UNIV OF SCI & TECH
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