A Method for Judging Vehicle Loading Status Based on Sound
A vehicle and state technology, which is applied in the field of judging the load state of vehicles based on sound, can solve problems such as business management of logistics companies and construction of a large number of infrastructures.
Active Publication Date: 2018-11-09
上海吉七物联网科技有限公司
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Problems solved by technology
This method is currently generally used in the overload management of traffic law enforcement agencies. This method requires a lot of infrastructure construction and is not suitable for business management of logistics companies.
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[0010] Other aspects, advantages and salient features of the present invention will become apparent to those skilled in the art from the following detailed description of exemplary embodiments of the present invention when taken in conjunction with the accompanying drawings.
[0011] In the present invention, the terms "include" and "comprising" and their derivatives mean to include but not limit; the term "or" is inclusive, meaning and / or.
[0012] In this specification, the following illustrations of various embodiments are used to describe the principles of the present invention and should not be construed as limiting the scope of the invention in any way. The following description with reference to the accompanying drawings is provided to assist in a comprehensive understanding of exemplary embodiments of the present invention as defined by the claims and their equivalents. The following description includes numerous specific details to aid in understanding, but these shou...
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The invention provides a method for judging the vehicle loading state. The method is characterized by comprising the steps that vehicle speed data are acquired; the start and end time of each time of acceleration of the vehicle is determined based on the vehicle speed data; the acceleration characteristic value of each time of acceleration is determined; vehicle sound data are acquired, and the sound energy characteristic value of each time of acceleration is determined based on the vehicle sound data; the sound energy characteristic value of each time of acceleration is divided by the corresponding acceleration characteristic value so as to acquire a loading characteristic value, the loading characteristic values apart from the state of uphill and downhill are taken and the loading characteristic value sequences are acquired; the mean of every N values of the loading characteristic value sequences is taken so that secondary loading characteristic value sequences are obtained, wherein N is greater than 1; a cutoff value is determined according to the historical distribution of the secondary loading characteristic value sequences; and the secondary loading characteristic values are compared with the cutoff value so as to judge the loading state of the vehicle. The invention also provides a system for judging the vehicle loading state.
Description
technical field [0001] The invention relates to the technical field of vehicle detection, in particular to a method for judging the load state of a vehicle based on sound. Background technique [0002] With the rapid development of the domestic logistics industry and increasingly fierce competition in the industry, both large logistics companies and fleets with only a few vehicles are trying to strengthen fleet management and reduce costs in order to improve their survivability. [0003] In fleet management, the operating efficiency of each vehicle (empty vehicle running mileage and cargo running mileage) is manually registered and counted on a monthly or quarterly basis. [0004] For the detection of vehicle load, it is generally measured by a large floor scale. This solution is generally used when the business needs to be settled according to the weight of the goods. For goods with a quantity or fixed specifications, and There is no need to accurately measure its weight, ...
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IPC IPC(8): G08G1/01G08G1/052G01G19/03
CPCG01G19/03G08G1/01G08G1/052
Inventor 石甫管士飞
Owner 上海吉七物联网科技有限公司