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    • 3. 发明专利
    • MULTIPLE-UTILIZATION APPARATUS OF REFERENCE MARK
    • JPH05196477A
    • 1993-08-06
    • JP22396092
    • 1992-08-24
    • BOSCH GMBH ROBERT
    • BUERUNAA YUNTONORUBERUTO MIRAA
    • G01D5/244G01D5/246G01P3/489
    • PURPOSE: To enable obtaining of various identification information concerning a vehicle by using a sensor disc with a different reference mark to identify the generation and the type of the reference mark. CONSTITUTION: A vehicle equipped with a manual switch gear employs a sensor disc 10 having a reference mark 12. On the other hand, a disc 10 having the reference mark 12 is assembled into a power drive vehicle. Outputs of the discs enters a pulse processor 14 through a detector 13 to make a rectangular pulse train signal U 14. In the former case, the signal U 14 is generated at a low value of the mark 12 and in the latter case, it is generated at a high value of the mark 12'. Therefore, the type of transmission gear can be identified by the level of the signal. In this case, it should be noted that both types of vehicle use the same disc 10. The vehicle equipped with the manual switch gear evaluates a normal output signal of the detector 13 and the other type of vehicle evaluates an inversion output signal to allow the identifying of the types of vehicles. Moreover, the means is applicable for other purpose of identification, for example, to determine whether the throttle valve control is operated mechanically or electrically.