JPS61203335U - - Google Patents
Info
- Publication number
- JPS61203335U JPS61203335U JP8806085U JP8806085U JPS61203335U JP S61203335 U JPS61203335 U JP S61203335U JP 8806085 U JP8806085 U JP 8806085U JP 8806085 U JP8806085 U JP 8806085U JP S61203335 U JPS61203335 U JP S61203335U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- multiplexer
- input terminal
- constant current
- zero suppression
- 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
Links
- 230000001629 suppression Effects 0.000 claims 4
- 239000003990 capacitor Substances 0.000 claims 2
- 238000001514 detection method Methods 0.000 claims 2
- 238000009529 body temperature measurement Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Measurement Of Resistance Or Impedance (AREA)
- Electronic Switches (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Description
第１図は本考案回路の一例を示す電気的接続図
、第２図は従来回路の電気的接続図である。
Ｒｔ１〜Ｒｔｎ……測温抵抗体、ＭＸ１〜ＭＸ
３……マルチプレクサ、ＣＩ１〜ＣＩｎ……定電
流供給回路、ＶＣ……直流基準電圧源、ＲＯ１〜
ＲＯｎ……ゼロサブレツシヨン抵抗。
FIG. 1 is an electrical connection diagram showing an example of the circuit of the present invention, and FIG. 2 is an electrical connection diagram of a conventional circuit. Rt1~Rtn...Resistance temperature sensor, MX1~MX
3... Multiplexer, CI1~CIn... Constant current supply circuit, VC... DC reference voltage source, RO1~
ROn...Zero subrection resistance.
Claims (1)
の信号ラインにそれぞれ挿入接続された複数個の
ゼロサプレツシヨン抵抗と、この各ゼロサプレツ
シヨン抵抗を介して複数個の測温抵抗体からの信
号を選択する第１のマルチプレクサと、第１のマ
ルチプレクサによつて選択された信号を入力し温
度信号を得る信号処理回路と、一方の入力端にホ
ールドコンデンサを有した演算増幅器を含み各ゼ
ロサプレツシヨン抵抗を介して各測温抵抗体に定
電流を供給する複数個の定電流供給回路と、各ゼ
ロサプレツシヨン抵抗に流れる電流に対した信号
を選択する第２のマルチプレクサと、この第２の
マルチプレクサによつて選択された信号を入力す
る電流検出回路と、この電流検出回路の出力を各
定電流供給回路の演算増幅器のホールドコンデン
サを有した一方の入力端に与える第３のマルチプ
レクサと、各定電流供給回路の演算増幅器の他方
の入力端に共通に基準電圧を与える基準電圧源と
を備えた測温抵抗体入力回路。 A plurality of resistance temperature detectors, a plurality of zero suppression resistors each inserted and connected to the signal line of each of these resistance temperature detectors, and a plurality of temperature measurement resistors connected through each zero suppression resistor. A first multiplexer that selects a signal from the resistor, a signal processing circuit that inputs the signal selected by the first multiplexer to obtain a temperature signal, and an operational amplifier that has a hold capacitor at one input terminal. a plurality of constant current supply circuits that supply a constant current to each resistance temperature sensor through each zero suppression resistor; and a second multiplexer that selects a signal for the current flowing through each zero suppression resistor. a current detection circuit which inputs the signal selected by this second multiplexer, and a second input terminal which supplies the output of this current detection circuit to one input terminal having a hold capacitor of an operational amplifier of each constant current supply circuit. 3 multiplexer, and a reference voltage source that commonly applies a reference voltage to the other input terminal of the operational amplifier of each constant current supply circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8806085U JPH0439549Y2 (en) | 1985-06-10 | 1985-06-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8806085U JPH0439549Y2 (en) | 1985-06-10 | 1985-06-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61203335U true JPS61203335U (en) | 1986-12-20 |
| JPH0439549Y2 JPH0439549Y2 (en) | 1992-09-16 |
Family
ID=30640845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8806085U Expired JPH0439549Y2 (en) | 1985-06-10 | 1985-06-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0439549Y2 (en) |
-
1985
- 1985-06-10 JP JP8806085U patent/JPH0439549Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0439549Y2 (en) | 1992-09-16 |
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