Title:
センサブリッジの機能監視方法および機能監視用回路装置
Document Type and Number:
Japanese Patent JP4008044
Kind Code:
B2
Abstract:
PCT No. PCT/DE98/01698 Sec. 371 Date Feb. 24, 1999 Sec. 102(e) Date Feb. 24, 1999 PCT Filed Jun. 19, 1998 PCT Pub. No. WO99/01777 PCT Pub. Date Jan. 14, 1999Monitoring of the function of a symmetrical sensor bridge circuit is performed in that the signal from the positive or negative half-bridge is subtracted from half the bridge supply voltage (Vs/2) in a summing member (2) and is subsequently amplified by an amplifier (3) in such a way that it corresponds to the full bridge signal (Vin). The full bridge signal (Vin) is compared with the amplified difference signal in a comparator (5). If the difference signal deviates in an unacceptable manner from the full bridge signal, the comparator switches an alarm signal on the output signal (6) of the sensor, so that this output signal is placed into a range which lies outside of the normal operational range of the sensor.
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Inventors:
Georg Pfuff
Herbert Keller
Herbert Keller
Application Number:
JP50609199A
Publication Date:
November 14, 2007
Filing Date:
June 19, 1998
Export Citation:
Assignee:
ROBERT BOSCH GMBH
International Classes:
G01L9/04; G01R35/00; G01D3/08; G01L9/06; G01L27/00; G01R31/28
Domestic Patent References:
| JP5172661A | ||||
| JP5042613B2 | ||||
| JP7159258A |
Attorney, Agent or Firm:
Toshio Yano
Toshiomi Yamazaki
Takuya Kuno
Reinhard Einsel
Toshiomi Yamazaki
Takuya Kuno
Reinhard Einsel