Method and device for detecting automobile motion state by using acceleration sensor

An acceleration sensor and motion state technology, applied in the direction of speed measurement using acceleration, speed/acceleration/shock measurement, and measurement devices, can solve problems such as prone to false alarms, failure to trigger abnormal signals, and difficult selection of thresholds, etc., to achieve Reduce the effect of false positives or false negatives

Inactive Publication Date: 2013-03-13
珠海德百祺科技有限公司
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Problems solved by technology

There are two problems in this method in actual use: First, there are certain difficulties in the selection of the preset threshold value. If the selection is too low, false alarms are prone to occur, that is, the vehicle does not actually move but triggers an abnormal signal (such as strong wind, etc.). The situation causes the vehicle to shake); if the select

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  • Method and device for detecting automobile motion state by using acceleration sensor
  • Method and device for detecting automobile motion state by using acceleration sensor
  • Method and device for detecting automobile motion state by using acceleration sensor

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Embodiment Construction

[0026] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention. On the contrary, the embodiments of the present invention include all changes, modifications and equivalents coming within the spirit and scope of the appended claims.

[0027] In the description of the present invention, it should be understood that the terms "first", "second" and so on are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance. In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "connected" and "connect...

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Abstract

The invention discloses a method and a device for detecting an automobile motion state by using an acceleration sensor. The method comprises the following steps of: detecting an acceleration value of an automobile by using the acceleration sensor, wherein the acceleration value includes an X-axis acceleration value, a Y-axis acceleration value and a Z-axis acceleration value; acquiring an acceleration value within a preset time, and carrying out statistic and statistic analysis process on the acceleration value within the preset time, so as to obtain the statistic information within the preset time; matching the statistic information with a preset state model; and determining the state corresponding to the preset state model as the motion state of the automobile when the statistic information is matched with the preset state model. According to the embodiment of the invention, the automobile state is judged according to statistic characteristics of data output from the acceleration sensor, the possibility of misinformation or report miss is reduced, and moreover, a current operation speed value of the automobile can be estimated or the state that whether the door is opened or closed can be identified.

Description

technical field [0001] The invention relates to the technical field of vehicle detection, in particular to a method and a device for detecting the motion state of a vehicle by using an acceleration sensor. Background technique [0002] At present, vehicle anti-theft devices mostly use accelerometers to judge the state of the vehicle, and then perform positioning and alarm processing after the vehicle is found to be moving. The principle is mainly described as follows: use the gravitational accelerometer installed in the vehicle to detect the change of the vehicle's gravitational acceleration, when the acceleration change measured by the acceleration sensor exceeds the preset threshold, an abnormal signal is sent to indicate that the vehicle state has changed judge. There are two problems in this method in actual use: First, there are certain difficulties in the selection of the preset threshold value. If the selection is too low, false alarms are prone to occur, that is, th...

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Application Information

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IPC IPC(8): G01P13/00G01P7/00
Inventor 张融融王京奇
Owner 珠海德百祺科技有限公司
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