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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

Inactive Publication Date: 2009-08-19
TSINGHUA UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

If the above method is used to realize slope recognition, there will be problems such as high sensor cost, inconvenient installation and layout, and too complicated calculation

Method used

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

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Embodiment Construction

[0021] The vehicle-mounted road gradient recognition device based on the low-cost acceleration sensor proposed by the present invention is described in detail as follows in conjunction with the accompanying drawings and embodiments:

[0022] The structure of the device of the present invention is as figure 1 As shown, the device includes a vehicle-mounted embedded computer with two serial ports, an acceleration module connected with the vehicle-mounted embedded computer through the first serial port, and a vehicle speed module connected with the vehicle-mounted embedded computer through the first serial port; the acceleration module It is composed of an acceleration sensor, an analog-to-digital conversion module and a single-chip computer, and the output terminal of the acceleration sensor is connected with the input terminal of the single-chip computer through the analog-to-digital conversion module. With this device, when the vehicle speed module sends out data, the accelera...

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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.

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C9/00G01C1/00B60R16/02
Inventor 杨殿阁连小珉张涛郑四发罗禹贡王建强李克强
Owner TSINGHUA UNIV
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