JPH0189374U - - Google Patents
Info
- Publication number
- JPH0189374U JPH0189374U JP18395687U JP18395687U JPH0189374U JP H0189374 U JPH0189374 U JP H0189374U JP 18395687 U JP18395687 U JP 18395687U JP 18395687 U JP18395687 U JP 18395687U JP H0189374 U JPH0189374 U JP H0189374U
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- electrodes
- measuring
- resistance value
- contact resistance
- 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
- 238000005259 measurement Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Measurement Of Resistance Or Impedance (AREA)
Description
第１図はこの発明に係る電極の接触抵抗測定装
置の概要を示すブロツク構成図、第２図乃至第４
図は各電極の接触抵抗測定時の等価回路図、第５
図は従来の電極の接触抵抗測定装置の概要を示す
ブロツク構成図である。
符号の説明、Ｅａ，Ｅｂ…活性電極、Ｅｃ…不
活性電極、Ｒａ，Ｒｂ，Ｒｃ…接触抵抗値、Ａ…
抵抗値表示装置で、Ｂ…定電流源、Ｃ…差動増幅
器、Ｅ…生体電気現象測定用アンプ、ＳＷ１，Ｓ
Ｗ２，ＳＷ３…切換えスイツチ。
FIG. 1 is a block diagram showing an outline of the electrode contact resistance measuring device according to the present invention, and FIGS.
The figure is an equivalent circuit diagram when measuring the contact resistance of each electrode.
The figure is a block diagram showing an outline of a conventional electrode contact resistance measuring device. Explanation of symbols, Ea, Eb...active electrode, Ec...inactive electrode, Ra, Rb, Rc...contact resistance value, A...
In the resistance value display device, B...constant current source, C...differential amplifier, E...amplifier for measuring bioelectrical phenomena, SW1, S
W2, SW3...changeover switch.
Claims (1)
性電極と、基準電極となる１個の不活性電極とを
備え、これら電極の抵抗値を測定するように構成
された電極の接触抵抗測定装値であつて、上記各
電極に定電流を供給する抵抗値測定用の定電流源
と、上記各電極の端子電圧を差動増幅する入力イ
ンピーダンスを大にした差動増幅器と、この差動
増幅器の出力電圧から抵抗値を求めて表示する抵
抗値表示装置と、上記定電流源から各電極への電
流供給系路を選択的に切換える切換スイツチとを
具備したことを特徴とする電極の接触抵抗測定装
置。 (2) 上記切換スイツチが制御回路を介して自動
切換えされるように構成されている実用新案登録
請求の範囲第１項に記載の電極の接触抵抗測定装
置。 (3) 上記制御回路により生体電気現象測定モー
ドと各電極の抵抗値測定モードとに切換え可能な
スイツチが設けられている実用新案登録請求の範
囲第２項に記載の電極の接触抵抗測定装置。[Claims for Utility Model Registration] (1) Comprising at least two active electrodes for measuring bioelectrical phenomena and one inactive electrode serving as a reference electrode, and configured to measure the resistance value of these electrodes. A device for measuring the contact resistance of the electrodes, which includes a constant current source for resistance measurement that supplies a constant current to each of the electrodes, and a large input impedance that differentially amplifies the terminal voltage of each of the electrodes. The present invention is equipped with a dynamic amplifier, a resistance value display device that calculates and displays a resistance value from the output voltage of the differential amplifier, and a changeover switch that selectively switches the current supply path from the constant current source to each electrode. An electrode contact resistance measuring device characterized by: (2) The electrode contact resistance measuring device according to claim 1, wherein the changeover switch is configured to be automatically changed over via a control circuit. (3) The electrode contact resistance measuring device according to claim 2, which is provided with a switch that can be switched between a bioelectric phenomenon measuring mode and a resistance value measuring mode of each electrode by the control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18395687U JPH073347Y2 (en) | 1987-12-02 | 1987-12-02 | Electrode contact resistance measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18395687U JPH073347Y2 (en) | 1987-12-02 | 1987-12-02 | Electrode contact resistance measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0189374U true JPH0189374U (en) | 1989-06-13 |
| JPH073347Y2 JPH073347Y2 (en) | 1995-01-30 |
Family
ID=31475354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18395687U Expired - Lifetime JPH073347Y2 (en) | 1987-12-02 | 1987-12-02 | Electrode contact resistance measuring device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH073347Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05337097A (en) * | 1992-06-05 | 1993-12-21 | Ya Man Ltd | Body fat measuring device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4289413B2 (en) | 2007-03-26 | 2009-07-01 | 株式会社デンソー | Biological information measuring device |
-
1987
- 1987-12-02 JP JP18395687U patent/JPH073347Y2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05337097A (en) * | 1992-06-05 | 1993-12-21 | Ya Man Ltd | Body fat measuring device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH073347Y2 (en) | 1995-01-30 |
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