CN2078597U - Electronic blood pressure gauge - Google Patents
Electronic blood pressure gauge Download PDFInfo
- Publication number
- CN2078597U CN2078597U CN 90225628 CN90225628U CN2078597U CN 2078597 U CN2078597 U CN 2078597U CN 90225628 CN90225628 CN 90225628 CN 90225628 U CN90225628 U CN 90225628U CN 2078597 U CN2078597 U CN 2078597U
- Authority
- CN
- China
- Prior art keywords
- integrating
- converter
- integrating circuit
- different
- blood pressure
- 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.)
- Withdrawn
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- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
Abstract
The utility model discloses an electronic sphygmomanometer which is provided with a measurement-converting switch. A mode / number converter is provided with two integrator circuits with different time constants, and the converting switch selectively connects the two integrator circuits. Thus, a kilobar value or a mercury millimeter value can be selected to be displayed on the digital display.
Description
This utility model relates to a kind of electric sphygmomanometer, particularly a kind of electric sphygmomanometer that is provided with the metering permutator.
The existing electric sphygmomanometer that comprises ingredients such as pressure transducer, pressure-sensitive amplifier, A/D converter, microprocessor and character display, A/D converter wherein is made up of analog switch, operational amplifier and integrating resistor and electric capacity.Immobilize owing to constitute integration circuit time constant with integrating resistor and electric capacity, this A/D converter can only will become the blood pressure values of unique measurement unit through the blood pressure analog signal conversion that pressure transducer and pressure-sensitive amplifier detect according to single ratio.Thereby existing electric sphygmomanometer can only show a kind of pressure value of unit, is not to show international kilobar value, shows the millimetres of mercury value that people are habitual for a long time exactly.And these two kinds of measurement units are at present and expect still can be simultaneously popular in a period of time from now on, thereby the demonstration of single metering will be made troubles to user.
In order to overcome the above-mentioned defective of prior art, this utility model electric sphygmomanometer has two integrating circuit that time constant is different in A/D converter, and establishes a metering permutator in order to they are selected connection.Accompanying drawing illustrates the part-structure block diagram of electric sphygmomanometer, the analog-to-digital converter circuit that empty frame (1) wherein designs for this utility model.It is two integrating resistor R of 1: 0.1333 that resistance value ratio is arranged in this circuit
1And R
2, and a metering permutator K is arranged in order to R
1Or R
2Select to connect, make they and integrating capacitor C
1Form R
1C
1Or R
2C
1Integrating circuit incorporate mould/number conversion circuit into.When the metering permutator connects R
1, read the variable of millimetres of mercury from character display; Permutator connects R
2, display then illustrates the variable of kilobar.Thereby, connect the required show value of can in millimetres of mercury and two kinds of measurement units of kilobar, choosing any one kind of them by the selection of metering permutator, for user provides convenience.
Description of drawings
Accompanying drawing is the part-structure block diagram of electric sphygmomanometer.Empty frame 1 wherein is provided with the mould/number conversion circuit that measures permutator for this utility model, and 2 is analog switch, and 3 and 4 is operational amplifier, and 5 is diode, and 6 is stabilivolt, and 7 is earth terminal, and 8 is reference voltage end, R
1And R
2Be integrating resistor, C
1Be integrating capacitor, R
3, R
4And R
5Be resistance, K is a permutator.
Claims (2)
1. one kind contains ingredients such as pressure transducer, pressure-sensitive amplifier, A/D converter, microprocessor and character display and constitutes the wherein electric sphygmomanometer of A/D converter by analog switch, operational amplifier and integrating circuit, it is characterized in that, in described A/D converter, have two integrating circuit that time constant is different, and establish a metering permutator in order to these two integrating circuit are selected connection.
2 according to the described electric sphygmomanometer of claim 1, it is characterized by, describedly have two different integrating circuit of time constant and have same integrating capacitor exactly, but two integrating circuit of different integrating resistors are arranged, the resistance value ratio of two different integrating resistors is equivalent to 1: 0.1333.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90225628 CN2078597U (en) | 1990-12-11 | 1990-12-11 | Electronic blood pressure gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90225628 CN2078597U (en) | 1990-12-11 | 1990-12-11 | Electronic blood pressure gauge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2078597U true CN2078597U (en) | 1991-06-12 |
Family
ID=4903032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90225628 Withdrawn CN2078597U (en) | 1990-12-11 | 1990-12-11 | Electronic blood pressure gauge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2078597U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100333687C (en) * | 2002-03-28 | 2007-08-29 | 欧姆龙健康医疗事业株式会社 | Electronic hemomanometer and blood pressure measuring method of electronic hemomanometer |
| CN100418471C (en) * | 2000-11-14 | 2008-09-17 | 欧姆龙健康医疗事业株式会社 | Electronic sphygmomanometer |
| CN101999893A (en) * | 2010-09-29 | 2011-04-06 | 北京时代民芯科技有限公司 | Blood pressure measuring circuit |
-
1990
- 1990-12-11 CN CN 90225628 patent/CN2078597U/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100418471C (en) * | 2000-11-14 | 2008-09-17 | 欧姆龙健康医疗事业株式会社 | Electronic sphygmomanometer |
| CN100333687C (en) * | 2002-03-28 | 2007-08-29 | 欧姆龙健康医疗事业株式会社 | Electronic hemomanometer and blood pressure measuring method of electronic hemomanometer |
| CN101999893A (en) * | 2010-09-29 | 2011-04-06 | 北京时代民芯科技有限公司 | Blood pressure measuring circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |