Method for avoiding fraud on a taximeter or tachograph

Details Method for avoiding fraud on a taximeter or tachograph Method for avoiding fraud on a taximeter or tachograph

G - Physics

07

B

G07B 13/02 (2006.01) G07C 5/00 (2006.01) G07C 5/02 (2006.01) G07C 7/00 (2006.01)

Patent

CA 2242163

This invention relates to a method and device for avoiding fraud on a taximeter or a tachograph, by connecting an auxiliary generator between the sensor and the taximeter or tachograph.. The signal which is applied to the taximeter or tachograph is analyzed by sampling, and an anti-fraud action is triggered off if this analysis shows that this signal has undergone a regular amplitude modulation.

La présente invention fait état d'une méthode et d'un dispositif empêchant la manipulation frauduleuse des taximètres ou des tachygraphes. Il suffit de relier un générateur auxiliaire entre le capteur et le taximètre ou le tachygraphe. Le signal transmis au taximètre ou au tachygraphe est analysé par échantillonnage et une action anti-fraude est déclenchée si cette analyse montre que ce signal a subit une amplitude de modulation régulière.

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