JPS6023005U - electromagnetic blood flow meter - Google Patents
electromagnetic blood flow meterInfo
- Publication number
- JPS6023005U JPS6023005U JP11428683U JP11428683U JPS6023005U JP S6023005 U JPS6023005 U JP S6023005U JP 11428683 U JP11428683 U JP 11428683U JP 11428683 U JP11428683 U JP 11428683U JP S6023005 U JPS6023005 U JP S6023005U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- blood flow
- frequency
- subtraction
- output
- 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
Landscapes
- Measuring Volume Flow (AREA)
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は通常の心電図信号波形、第２図は特公昭５４−
３９７５０による変成器成分除去方法の説明図、第３図
は本考案による電磁血流計の回路構成例、第４図はその
各部波形並びに第５図及び第６図は第３図による回路の
変形例である。Figure 1 shows the normal electrocardiogram signal waveform, Figure 2 shows the
39750, FIG. 3 is an example of the circuit configuration of the electromagnetic blood flow meter according to the present invention, FIG. 4 is the waveform of each part thereof, and FIGS. 5 and 6 are modifications of the circuit according to FIG. 3. This is an example.
Claims (1)
の周波数からより低い周波数へ切換可能になった励磁回
路と、前記プローブの検出信号を入力とし、かつＥＣＧ
信号除去用バイパスフィルタ及び復調器を含む血流信号
検出回路と、この回路の出力である血流信号を平均化す
る平均回路と、前記励磁周波数が一時的に前記のより低
い周波数に切換ねる際に、前記通常の周波数に対する前
記平均回路の出力から前記のより低い周波数に対する前
記平均回路の出力の減算及びホールドを行う減算保持回
路と、前記血流信号から前記減算保持回路の出力を減算
して最終的な血流信号を出力する減算回路とを有するこ
とを特徴とする電磁血流計。An excitation circuit that excites a probe with a rectangular wave and whose excitation frequency can be switched from a normal frequency to a lower frequency;
a blood flow signal detection circuit including a bypass filter for signal removal and a demodulator; an averaging circuit for averaging the blood flow signal output from this circuit; and when the excitation frequency is temporarily switched to the lower frequency. a subtraction and holding circuit that subtracts and holds the output of the averaging circuit for the lower frequency from the output of the averaging circuit for the normal frequency; and a subtraction and holding circuit that subtracts the output of the subtraction and holding circuit from the blood flow signal. An electromagnetic blood flow meter comprising a subtraction circuit that outputs a final blood flow signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11428683U JPS6023005U (en) | 1983-07-25 | 1983-07-25 | electromagnetic blood flow meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11428683U JPS6023005U (en) | 1983-07-25 | 1983-07-25 | electromagnetic blood flow meter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6023005U true JPS6023005U (en) | 1985-02-16 |
| JPH0143049Y2 JPH0143049Y2 (en) | 1989-12-14 |
Family
ID=30264239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11428683U Granted JPS6023005U (en) | 1983-07-25 | 1983-07-25 | electromagnetic blood flow meter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6023005U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4972985A (en) * | 1972-10-11 | 1974-07-15 | ||
| JPS5714322A (en) * | 1980-07-02 | 1982-01-25 | Nippon Kouden Kogyo Kk | Electromagnetic blood flow meter |
-
1983
- 1983-07-25 JP JP11428683U patent/JPS6023005U/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4972985A (en) * | 1972-10-11 | 1974-07-15 | ||
| JPS5714322A (en) * | 1980-07-02 | 1982-01-25 | Nippon Kouden Kogyo Kk | Electromagnetic blood flow meter |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0143049Y2 (en) | 1989-12-14 |
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