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Method for determining driving state of vehicle based on acceleration sensor

An acceleration sensor and vehicle driving technology, applied in the automotive field, can solve problems such as limited status and easy misjudgment, and achieve the effects of standardizing driving behavior, ensuring driving safety, and preventing dangerous driving behavior

Active Publication Date: 2011-08-31
SHENZHEN CASTEL WIRELESS TELECOMM
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Problems solved by technology

[0004] The driving state of the vehicle can be obtained through the state signals of the vehicle, such as brake signals, turn signal signals, etc., but the states that can be obtained are limited; image processing technology can also be used to analyze road images, such as judging vehicle lane changes by analyzing lane dividing lines situation, but misjudgment is prone to occur, especially in dark environments such as night

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  • Method for determining driving state of vehicle based on acceleration sensor
  • Method for determining driving state of vehicle based on acceleration sensor
  • Method for determining driving state of vehicle based on acceleration sensor

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Embodiment Construction

[0025] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0026] The flow of a method for determining the driving state of a vehicle based on an acceleration sensor in an embodiment of the present invention is as follows: figure 1 shown, including the following steps:

[0027] Step 101, using a triaxial acceleration sensor to collect longitudinal acceleration, lateral acceleration and vertical acceleration.

[0028] Step 102: Calculate the transformation matrix between the vehicle coordinate system and the acceleration sensor coordinate system, obtain the initial attitude of the acceleration sensor, that is, the initial angle between the acceleration sensor and the vehicle, and perform zero offset processing on the collected acc...

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Abstract

The invention discloses a method for determining the driving state of a vehicle based on an acceleration sensor. The method comprises the following steps of: A, acquiring the longitudinal acceleration, the transverse acceleration and the vertical acceleration of an automobile by using a three-axial acceleration sensor; B, calculating a conversion matrix of an automobile coordinate system and an acceleration sensor coordinate system, acquiring the initial attitude of the acceleration sensor, namely the initial angle between the acceleration sensor and the automobile, and performing zero bias filtering processing on the acquired accelerations so as to acquire the acceleration value of the automobile coordinate system; and C, determining the driving state of the vehicle according to the acceleration values of a plurality of continuous automobile coordinate systems. In the method for determining the driving state of the vehicle based on the acceleration sensor, the original data is acquired by the acceleration sensor, and the driving state of the vehicle is determined by analyzing and processing three axial accelerations, so that the driving behaviors and the driving state of a driver are known, vehicle managers are assisted in normalizing the driving behaviors, dangerous driving behaviors are prevented, and driving safety is ensured.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a method for judging the running state of a vehicle based on an acceleration sensor. Background technique [0002] At present, under the pressure of continuously increasing traffic accidents and traffic jams, driver / passenger-centered intelligent vehicle active safety systems and related new driving sensors / controllers are receiving more and more attention in the United States, Europe, Japan and the world. More and more car and car accessories manufacturers and mass consumers are concerned. Continuously in-depth research and experiments have shown that real-time monitoring and intelligent evaluation of the driver's driving behavior and driving status can help to detect possible operating errors early and avoid traffic accidents; at the same time, remind the driver to adopt a more reasonable driving plan to Improve the speed of vehicles and improve traffic efficiency. Not on...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W40/12
Inventor 元光七何勇王晓东
Owner SHENZHEN CASTEL WIRELESS TELECOMM
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