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Patent Searching and Data


Title:
VOLTAGE CONVERTER AND PHYSICAL QUANTITY DETECTOR
Document Type and Number:
Japanese Patent JPH0634402
Kind Code:
A
Abstract:

PURPOSE: To make a processing circuit common and versatile for processing various kinds of electric signals, such as voltage, current, power, etc., outputted from a sensor head and reduce the cost of a physical quantity detector.

CONSTITUTION: The electric signal of a sensor head 2 is converted into a voltage signal by means of a voltage conversion circuit section 3. The voltage signal is impressed upon the small-gap capacitor 8 of an oscillation circuit section 4 and converted into a frequency signal by means of the section 4. The capacitance C of the capacitor 8 and the oscillation frequency (f) of the frequency signal vary in accordance with the voltage signal. A detection circuit section 5 detects the oscillation frequency of the section 4 and outputs the detected frequency after converting the frequency into a signal indicating physical quantity information.


Inventors:
IMANAKA KOICHI
Application Number:
JP1992000210775
Publication Date:
February 08, 1994
Filing Date:
July 14, 1992
Export Citation:
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Assignee:
OMRON TATEISI ELECTRONICS CO
International Classes:
G01D21/00; G01J1/44; G01R19/252; (IPC1-7): G01D21/00; G01J1/44; G01R19/252
Attorney, Agent or Firm:
中野 雅房