JPS5733332A - Detection of abnormality in temperature sensor - Google Patents

Detection of abnormality in temperature sensor

Info

Publication number
JPS5733332A
JPS5733332A JP10726880A JP10726880A JPS5733332A JP S5733332 A JPS5733332 A JP S5733332A JP 10726880 A JP10726880 A JP 10726880A JP 10726880 A JP10726880 A JP 10726880A JP S5733332 A JPS5733332 A JP S5733332A
Authority
JP
Japan
Prior art keywords
voltage
sensor
temp
abnormality
amplifier
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.)
Pending
Application number
JP10726880A
Other languages
Japanese (ja)
Inventor
Masao Yoshida
Yasuo Iida
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.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries 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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP10726880A priority Critical patent/JPS5733332A/en
Publication of JPS5733332A publication Critical patent/JPS5733332A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
    • G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)

Abstract

PURPOSE:To detect the abnormality of a temp. sensor without degrading its temp. detecting resolving power by providing an amplifier which amplifies the output voltage of the temp. sensor, and detecting the abnormality of the temp. sensor from the input voltage of this amplifier. CONSTITUTION:A voltage amplifier 3 is inputted with the detecting voltage VA at the connection point (a) of a thermistor 1 and a resistance 2, amplifies this and outputs output voltage VB. On the other hand, the detected voltage VA for abnormality of the sensor 1 is taken from the input side of the amplifier 3. The resistance value of the sensor 1 does not go to 0OMEGA in a practicable measurement temp. range, and outputting of VCC does not occur when the voltage VA is normal. Hence, abnormality is easily detected from the attainment of VCC by the voltage VA only when the sensor 1 is shorting. In case the sensor 1 is disconnected, the detected voltage goes to 0V. In this case, the case when the maximal voltage is generated is decided as a shortcircuit, and the case when the minimal voltage is generated as a disconnection. The resolving power and control characteristics of temp. measurement are improved by taking the practicalbe range relatively narrow.
JP10726880A 1980-08-05 1980-08-05 Detection of abnormality in temperature sensor Pending JPS5733332A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10726880A JPS5733332A (en) 1980-08-05 1980-08-05 Detection of abnormality in temperature sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10726880A JPS5733332A (en) 1980-08-05 1980-08-05 Detection of abnormality in temperature sensor

Publications (1)

Publication Number Publication Date
JPS5733332A true JPS5733332A (en) 1982-02-23

Family

ID=14454742

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10726880A Pending JPS5733332A (en) 1980-08-05 1980-08-05 Detection of abnormality in temperature sensor

Country Status (1)

Country Link
JP (1) JPS5733332A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6114338U (en) * 1984-06-29 1986-01-28 株式会社ノーリツ Thermistor open detection circuit
US4660993A (en) * 1984-08-23 1987-04-28 Johnson Matthey Public Limited Co. Calibration warning device
US5240522A (en) * 1991-03-29 1993-08-31 Sumitomo Light Metal Industries, Ltd. Method of producing hardened aluminum alloy sheets having superior thermal stability
JPH06336071A (en) * 1993-05-27 1994-12-06 Canon Inc Image forming apparatus
US7018093B2 (en) * 2001-07-11 2006-03-28 Samsung Electronics Co., Ltd. Apparatus and method for sensing defects in temperature sensors

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6114338U (en) * 1984-06-29 1986-01-28 株式会社ノーリツ Thermistor open detection circuit
US4660993A (en) * 1984-08-23 1987-04-28 Johnson Matthey Public Limited Co. Calibration warning device
US5240522A (en) * 1991-03-29 1993-08-31 Sumitomo Light Metal Industries, Ltd. Method of producing hardened aluminum alloy sheets having superior thermal stability
JPH06336071A (en) * 1993-05-27 1994-12-06 Canon Inc Image forming apparatus
US7018093B2 (en) * 2001-07-11 2006-03-28 Samsung Electronics Co., Ltd. Apparatus and method for sensing defects in temperature sensors

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