Algorithm and device for judging vehicle driving state by using accelerometer

• Main Author: CHEN ZHONGFEN
• Format: Patent
• Language: Chinese; English
• Published: 11.09.2018
• Subjects: ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDEDFOR ELSEWHERE; CHECKING-DEVICES; GENERATING RANDOM NUMBERS; PHYSICS; REGISTERING OR INDICATING THE WORKING OF MACHINES; TIME OR ATTENDANCE REGISTERS; VOTING OR LOTTERY APPARATUS

The invention discloses an algorithm and a device for judging a vehicle driving state by using an accelerometer. The algorithm comprises the following steps: continuously acquiring a first acceleratedspeed vector of a vehicle to be identified collected by a triaxial accelerometer in real time; continuously calculating a quaternion of a gradual approach expected quaternion in real time, revolvingthe first accelerated speed vector according to the quaternion, wherein the quaternion represents a vehicle posture; performing yaw correction on the revolved accelerated speed vector; comparing the corrected accelerated speed vector with an accelerated speed vector threshold value, according to a comparing result, identifying a current driving behavior of the vehicle to be identified. Because a gradual approach technology is continuously used in a using process, the algorithm is capable of adapting various application scenes better: multiple pavement conditions, such as horizontal, ramp or jolt, and scenes, such as a