JPS55162069A - Fault detector for electric temperature detector - Google Patents
Fault detector for electric temperature detectorInfo
- Publication number
- JPS55162069A JPS55162069A JP7100579A JP7100579A JPS55162069A JP S55162069 A JPS55162069 A JP S55162069A JP 7100579 A JP7100579 A JP 7100579A JP 7100579 A JP7100579 A JP 7100579A JP S55162069 A JPS55162069 A JP S55162069A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- fault
- signal
- comparator
- voltage
- 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
Links
Landscapes
- Measuring Temperature Or Quantity Of Heat (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
PURPOSE: To ensure the accurate detection for the fault which lacks the unsteady reproducibility, by giving the comparison to the voltage signals supplied from the temperature detecting circuit at the comparator circuit and then informing the fault of the detecting circuit.
CONSTITUTION: The detector consists of temperature detecting circuit 2 which converts the temperature into the voltage signal, comparator circuit 3 which compares the voltage signal with the reference voltage to produce the fault signal, and alarm circuit 5 each. Thermistor 204 in circuit 2 delivers the voltage corresponding to the temperature change. For instance, if the signal of an extraordinarily high level is produced, the output features level "1" since the level of the signal is higher than upper limit reference voltage VH to be connected to the inverse input terminal of comparator 312 in circuit 3. As a result, transistor 504 is turned on, and light emitting diode 507 glows while the output of comparator 312 is kept at level "1". In this way, the accurate detection is possible even in case such fault lacking the unsteady reproducibility as the contact defect may occur to the element and the like which forms the temperature detecting circuit.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7100579A JPS55162069A (en) | 1979-06-05 | 1979-06-05 | Fault detector for electric temperature detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7100579A JPS55162069A (en) | 1979-06-05 | 1979-06-05 | Fault detector for electric temperature detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55162069A true JPS55162069A (en) | 1980-12-17 |
Family
ID=13447946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7100579A Pending JPS55162069A (en) | 1979-06-05 | 1979-06-05 | Fault detector for electric temperature detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55162069A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57141566A (en) * | 1981-02-26 | 1982-09-01 | Sharp Corp | Detector for disconnection |
| US4839811A (en) * | 1986-09-22 | 1989-06-13 | Nissan Motor Company Limited | Automotive vehicle trouble checking apparatus |
| JPH04115038U (en) * | 1991-03-26 | 1992-10-12 | 西日本旅客鉄道株式会社 | Non-contact temperature detection device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49107769A (en) * | 1973-02-17 | 1974-10-14 | ||
| JPS5194279A (en) * | 1975-02-15 | 1976-08-18 | Dotaino ijokenshutsusochi |
-
1979
- 1979-06-05 JP JP7100579A patent/JPS55162069A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49107769A (en) * | 1973-02-17 | 1974-10-14 | ||
| JPS5194279A (en) * | 1975-02-15 | 1976-08-18 | Dotaino ijokenshutsusochi |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57141566A (en) * | 1981-02-26 | 1982-09-01 | Sharp Corp | Detector for disconnection |
| US4839811A (en) * | 1986-09-22 | 1989-06-13 | Nissan Motor Company Limited | Automotive vehicle trouble checking apparatus |
| JPH04115038U (en) * | 1991-03-26 | 1992-10-12 | 西日本旅客鉄道株式会社 | Non-contact temperature detection device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS5574421A (en) | Liquid level detector | |
| JPS55109968A (en) | Frequency decision circuit | |
| JPS5511225A (en) | Printing density detector | |
| JPS55162069A (en) | Fault detector for electric temperature detector | |
| JPS57168117A (en) | Liquid level detecting device | |
| JPS57182153A (en) | Gas detector | |
| JPS5724066A (en) | Inter-music detecting circuit of automatic music selector | |
| JPS54138466A (en) | Measuring method of sliding face width of trolley wires | |
| JPS6469962A (en) | Detecting apparatus of contact resistance | |
| EP0039460A3 (en) | Electronic clinical thermometer | |
| JPS5471347A (en) | State detector | |
| JPS55166487A (en) | Variable speed motor | |
| JPS56130646A (en) | Alarm equipment for gas leakage | |
| JPS6423731A (en) | Recharger | |
| JPS5786766A (en) | Level detecting device | |
| JPS55138665A (en) | Detecting system of operation fault of heating source | |
| JPS5748665A (en) | Resistance component measuring circuit | |
| JPS57197424A (en) | Liquid level sensor for liquid nitrogen | |
| JPS57131069A (en) | Circuit for detecting voltage variation | |
| JPS5598343A (en) | Determining method of gas concentration | |
| JPS54135550A (en) | Automatic discrimination level adjusting circuit of photo signal receiving circuit | |
| JPS5523475A (en) | Measuring instrument for indentation hardness | |
| JPS55130535A (en) | Exposure lamp control circuit of copying apparatus | |
| JPS55140167A (en) | Fault detector | |
| JPS5578210A (en) | Signal detection circuit |