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Patent Searching and Data


Title:
VEHICLE SPEED DETECTOR
Document Type and Number:
Japanese Patent JPH085646
Kind Code:
A
Abstract:

PURPOSE: To divide the frequency of a vehicle speed pulse signal at a frequency division ratio M/D (M and D are natural numbers) without causing any fluctuation in the period of output pulse signal.

CONSTITUTION: Rotation of a gear 1 for deterting the vehicle speed is detected through a detection element 2 comprising an MRE(magnetoresistive element), for example, and shaped through a shaper circuit 3 to produce a vehicle speed pulse. The period of the vehicle speed pulse signal is detected through a sampling circuit 4. The period thus detected is then multiplied by a predetermined multiplicator through a multiplier circuit 6 and the product is divided by a predetermined divisor through a division/pulsation circuit 8 thus producing a frequency division vehicle speed pulse signal having a period equal to the division results.


Inventors:
AZEYANAGI SUSUMU
ARASUNA TOSHIKAZU
Application Number:
JP13693094A
Publication Date:
January 12, 1996
Filing Date:
June 20, 1994
Export Citation:
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Assignee:
NIPPON DENSO CO
International Classes:
G01D3/00; G01P3/481; G01P3/489; G01R23/10; (IPC1-7): G01P3/481; G01P3/489; G01R23/10
Attorney, Agent or Firm:
Yoji Ito