JPS5550169A - Trouble detector for humidity sensor - Google Patents

Trouble detector for humidity sensor

Info

Publication number
JPS5550169A
JPS5550169A JP12316078A JP12316078A JPS5550169A JP S5550169 A JPS5550169 A JP S5550169A JP 12316078 A JP12316078 A JP 12316078A JP 12316078 A JP12316078 A JP 12316078A JP S5550169 A JPS5550169 A JP S5550169A
Authority
JP
Japan
Prior art keywords
output
signal
sensor
control means
short
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP12316078A
Other languages
Japanese (ja)
Other versions
JPS588751B2 (en
Inventor
Hiroshi Fujieda
Akihisa Takano
Tatsuo Saka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP53123160A priority Critical patent/JPS588751B2/en
Publication of JPS5550169A publication Critical patent/JPS5550169A/en
Publication of JPS588751B2 publication Critical patent/JPS588751B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)

Abstract

PURPOSE: To prevent wrong operation, by producing a trouble signal from the output of a cleaning timing control means and a level control means which responds to the output of a sensor.
CONSTITUTION: When a sensor 1 is short-circuited by accident, a cleaning signal A and a short-time pulse B are generated by a timing control means 4. Because of the short circuit, the output of a rectifier circuit 2 becomes maximum and a signal C is generated by a level detection means 3. The AND of the signals B, C is taken by an AND gate 7 to produce an output D to generate a trouble output F by a latch unit 11. When the sensor 1 or a heater 5 develops an open trouble, a short-time pulse B' is produced by the control means 4 before a longest time necessary for cleaning. Since the resistance of the sensor 1 remains high, the output C is not generated by the detection means 3. The output signal C is inverted by an inverter gate 8. The AND of the signal B and the inverted signal is taken by an AND gate 9 to produce an output D' to generate a touble output F by the latch unit 11.
COPYRIGHT: (C)1980,JPO&Japio
JP53123160A 1978-10-05 1978-10-05 Humidity sensor failure detector Expired JPS588751B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53123160A JPS588751B2 (en) 1978-10-05 1978-10-05 Humidity sensor failure detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53123160A JPS588751B2 (en) 1978-10-05 1978-10-05 Humidity sensor failure detector

Publications (2)

Publication Number Publication Date
JPS5550169A true JPS5550169A (en) 1980-04-11
JPS588751B2 JPS588751B2 (en) 1983-02-17

Family

ID=14853660

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53123160A Expired JPS588751B2 (en) 1978-10-05 1978-10-05 Humidity sensor failure detector

Country Status (1)

Country Link
JP (1) JPS588751B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59131571U (en) * 1983-02-24 1984-09-04 トヨタ自動車株式会社 Dual fuel supply system for compression ignition engines

Also Published As

Publication number Publication date
JPS588751B2 (en) 1983-02-17

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