Invention Grant
- Patent Title: Vehicle speed signal falsification detection apparatus, vehicle speed limiting apparatus, vehicle speed signal falsification detection method, and vehicle speed limiting method
- Patent Title (中): 车速信号伪造检测装置，车速限制装置，车速信号伪造检测方法以及车速限制方法
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Application No.: US13462023Application Date: 2012-05-02
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Publication No.: US08839666B2Publication Date: 2014-09-23
- Inventor: Satoshi Fujii , Chikara Arai
- Applicant: Satoshi Fujii , Chikara Arai
- Applicant Address: JP Ageo-shi
- Assignee: UD Trucks Corporation
- Current Assignee: UD Trucks Corporation
- Current Assignee Address: JP Ageo-shi
- Agency: Foley & Lardner LLP
- Priority: JP2009-254542 20091106
- Main IPC: G01M17/007
- IPC: G01M17/007 ; B60W30/14 ; F02D29/02 ; B60W50/04
Abstract:
A vehicle speed signal falsification detection apparatus has a control unit incorporating a computer. The control unit calculates a vehicle speed according to a pulse signal proportional to the rotational speed of a drive wheel and also calculates a simulated vehicle speed according to a pulse signal proportional to the rotational speed of a driven wheel. Then, the control unit determines, on the basis of the comparison between the vehicle speed and the simulated vehicle speed, whether a vehicle speed signal has been falsified. When the control unit determines that the vehicle speed signal has been falsified, then the control unit outputs a falsification detection signal to another control unit so as to suppress the output of an engine.
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