JPS62158328U - - Google Patents
Info
- Publication number
- JPS62158328U JPS62158328U JP4597286U JP4597286U JPS62158328U JP S62158328 U JPS62158328 U JP S62158328U JP 4597286 U JP4597286 U JP 4597286U JP 4597286 U JP4597286 U JP 4597286U JP S62158328 U JPS62158328 U JP S62158328U
- Authority
- JP
- Japan
- Prior art keywords
- temperature sensor
- digital
- voltage
- temperature
- converter
- 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
- 238000010586 diagram Methods 0.000 description 2
- 238000011017 operating method Methods 0.000 description 1
Description
第１図はこの考案に係るデイジタル温度計の実
施例を示すブロツク図、第２図はマイクロコンピ
ユータの動作手順の一例を示すフローチヤート、
第３図は従来装置のブロツク線図である。
図中、１はデイジタル温度計、２は測温抵抗体
、４は定電流源、６はＡ／Ｄコンバータ、８はマ
イクロコンピユータ、ＳＷはスイツチである。
FIG. 1 is a block diagram showing an embodiment of the digital thermometer according to this invention, and FIG. 2 is a flowchart showing an example of the operating procedure of a microcomputer.
FIG. 3 is a block diagram of a conventional device. In the figure, 1 is a digital thermometer, 2 is a resistance temperature detector, 4 is a constant current source, 6 is an A/D converter, 8 is a microcomputer, and SW is a switch.
Claims (1)
からなる温度センサを有し、該温度センサに生ず
る両端電圧の差電圧により温度を測定するデイジ
タル温度計において、 上記温度センサに流される一定直流電流により
その両端に発生する電圧を交互に切り換えて送出
するスイツチと、 該スイツチから送出される２つの電圧信号をそ
れぞれデイジタル変換するＡ／Ｄコンバータと、 該Ａ／Ｄコンバータから出力される上記２つの
デイジタル電圧データの一方のデータから他方の
データを引算して、上記２つのデータに含まれる
オフセツト成分を打ち消すようにした引算手段と
を備えていることを特徴とするデイジタル温度計
。[Claims for Utility Model Registration] A digital thermometer that has a temperature sensor consisting of a resistance temperature sensor whose resistance value changes depending on the temperature to be measured, and that measures temperature by the voltage difference between the voltages generated across the temperature sensor, A switch that alternately switches and sends the voltage generated at both ends of the temperature sensor by a constant DC current flowing through the temperature sensor; an A/D converter that converts each of the two voltage signals sent from the switch into digital; and the A/D. and subtraction means for subtracting one of the two digital voltage data output from the converter from the other to cancel an offset component included in the two data. A digital thermometer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4597286U JPS62158328U (en) | 1986-03-28 | 1986-03-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4597286U JPS62158328U (en) | 1986-03-28 | 1986-03-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62158328U true JPS62158328U (en) | 1987-10-07 |
Family
ID=30865201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4597286U Pending JPS62158328U (en) | 1986-03-28 | 1986-03-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62158328U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6484125A (en) * | 1987-09-28 | 1989-03-29 | Aisin Seiki | Temperature indicator |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5575313A (en) * | 1978-12-01 | 1980-06-06 | Toshiba Corp | Offset voltage compensating circuit for amplifier |
| JPS55149849A (en) * | 1978-09-27 | 1980-11-21 | Toshiba Corp | Error compensating circuit for voltage-current conversion circuit |
-
1986
- 1986-03-28 JP JP4597286U patent/JPS62158328U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55149849A (en) * | 1978-09-27 | 1980-11-21 | Toshiba Corp | Error compensating circuit for voltage-current conversion circuit |
| JPS5575313A (en) * | 1978-12-01 | 1980-06-06 | Toshiba Corp | Offset voltage compensating circuit for amplifier |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6484125A (en) * | 1987-09-28 | 1989-03-29 | Aisin Seiki | Temperature indicator |
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