Title:
FLOW SENSOR
Document Type and Number:
WIPO Patent Application WO/2003/052355
Kind Code:
A1
Abstract:
A flow sensor is constructed to satisfy the relation f = k1/d - k2 where k1 = 19,000, 0 ≤ k2 ≤ 200, f (Hz) is the switching frequency at which heating resistors are alternately heated, d (µm) is the distance between the heating resistor and a temperature sensor, and k1 and k2 are constants. The distance between the heating resistor and the temperature sensor is 1µm or more and 30µm or less. As a result, the output frequency can be set the sampling frequency or higher of an engine control unit for an automobile, and the flow sensor can be applied to automobile.
Inventors:
MATSUURA TSUKASA (JP)
YUTANI NAOKI (JP)
TSUTSUMI KAZUHIKO (JP)
ARIYOSHI YUJI (JP)
YUTANI NAOKI (JP)
TSUTSUMI KAZUHIKO (JP)
ARIYOSHI YUJI (JP)
Application Number:
PCT/JP2001/010958
Publication Date:
June 26, 2003
Filing Date:
December 14, 2001
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
MATSUURA TSUKASA (JP)
YUTANI NAOKI (JP)
TSUTSUMI KAZUHIKO (JP)
ARIYOSHI YUJI (JP)
MATSUURA TSUKASA (JP)
YUTANI NAOKI (JP)
TSUTSUMI KAZUHIKO (JP)
ARIYOSHI YUJI (JP)
International Classes:
G01F1/684; G01F1/696; (IPC1-7): G01F1/68
Foreign References:
| EP0943900A1 | 1999-09-22 | |||
| JPH11344369A | 1999-12-14 |
Attorney, Agent or Firm:
Aoyama, Tamotsu (3-7 Shiromi 1-chome Chuo-k, Osaka-shi Osaka, JP)
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