Vehicle-mounted road grade recognition device and method based on low cost acceleration sensor

An acceleration sensor and road gradient technology, which is applied to measuring devices, instruments, measuring angles, etc., can solve the problems of high cost of sensors, inconvenient installation and layout, complicated calculation, etc., and achieve the effect of simple calculation method, low cost and small size
CN101509768AInactive Publication Date: 2009-08-19TSINGHUA UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TSINGHUA UNIV
Publication Date
2009-08-19
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to an on-vehicle road grade recognition device based on a low-cost acceleration transducer and a method thereof, belonging to the technical field of automotive electronics. The device comprises an on-vehicle embedded computer with two serial ports, as well as an acceleration module and a vehicle speed module respectively connected with the on-vehicle embedded computer. The acceleration module is composed of an acceleration transducer, an analog-digital conversion module and a singlechip. The method comprises the following steps: acceleration data and vehicle speed data are read in sequence; the obtained acceleration data is averagely processed and then taken as the present transducer acceleration; the motion acceleration of a last moment is obtained by calculation according to the present vehicle speed and the vehicle speed of a last moment; and the road grade is obtained by calculation according to the transducer acceleration of a last moment and the motion acceleration of a last moment and taken as the presently recognized road grade value. By adopting the low-cost acceleration transducer, the device and the method are characterized by low cost, small volume, convenient installation, and the like.
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Description

technical field

[0001] The invention belongs to the technical field of automotive electronics, and in particular relates to a vehicle-mounted road slope recognition device and method. Background technique

[0002] The acceleration sensor is an important mechanical sensor, and its research and development began in the late 1960s and early 1970s. In 1977, Stanford University, University of California, Berkley, and Draper Laboratories began to produce micro-silicon acceleration sensors on silicon wafers using micro-machining processes. Nowadays, acceleration sensors have been developing towards miniaturization and low cost. They have important application value in the fields of aerospace, guidance, navigation and automobiles. Especially in the automotive field, low-cost micromachined acceleration sensors have been successfully applied in the field of automotive electronics, including automotive airbags, vibration compensation, anti-skid systems, etc., to improve the maneuverab...

Claims

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