CN101536901A - Blood pressure measuring circuit - Google Patents
Blood pressure measuring circuit Download PDFInfo
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- CN101536901A CN101536901A CN200810066142A CN200810066142A CN101536901A CN 101536901 A CN101536901 A CN 101536901A CN 200810066142 A CN200810066142 A CN 200810066142A CN 200810066142 A CN200810066142 A CN 200810066142A CN 101536901 A CN101536901 A CN 101536901A
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Abstract
The invention provides a blood pressure measuring circuit, which comprises a processor, a nonvolatile memory, a first measuring branch circuit and a second measuring branch circuit, wherein the processor is respectively connected with the first measuring branch circuit, the nonvolatile memory and the second measuring branch circuit. Automatic calibration is carried out by comparing the blood pressure zero calibration value and the blood pressure calibration value which are measured by the first measuring branch circuit and the second measuring branch circuit. The blood pressure measuring circuit adopts an automatic calibration method, removes a potentiometer of manual adjustment, is favorable for production, and eliminates the deviation of zero calibration and calibration; the automatic zero calibration and the calibration only take less than five seconds; and the arrangement of pressure protect points is more flexible and convenient.
Description
Technical field
The present invention relates to a kind of armarium, particularly relate to and a kind ofly can realize automatic gauged blood pressure measuring circuit.
Background technology
Existing monitor all can comprise blood pressure measuring circuit, and measuring transducer and protection pick off are arranged in the blood pressure measuring circuit, and the school zero-sum calibration of these two pick offs all needs to realize by the manual adjustment potentiometer.The protection point of pressure protect circuit is the fixed in hardware force value.
But, because the school zero-sum calibration of the sensor needs all to realize by the manual adjustment potentiometer that not only increased cost, and produced very trouble, the school zero-sum calibration of each pressure transducer all needed more than 1 minute.
Because existences of wafing of the temperature of pick off and circuit needs regularly carry out school zero when measuring when measuring at interval, but the pressure of cuff not necessarily guarantees to be 0 pressure in when measuring at interval, has so just caused the deviation of school null value, causes measurement result generation deviation.
The protection point of pressure protect circuit is the fixed in hardware force value, underaction.
Summary of the invention
The present invention the invention provides a kind of blood pressure measuring circuit that can realize automatic calibration in order to overcome above-mentioned the deficiencies in the prior art.
The technical solution adopted for the present invention to solve the technical problems is: a kind of blood pressure measuring circuit is provided, it comprises processor, nonvolatile storage, first measures branch road and second measures branch road, wherein this processor first is measured branch road with this respectively, nonvolatile storage and second is measured branch road and is linked to each other, and measures blood pressure school null value and the blood pressure calibration value that branch road measures respectively by comparing this first measurement branch road and second, calibrates automatically.
The scheme that the present invention solves further technical problem is: described first measures branch road comprises analog-to-digital conversion circuit, the high pass amplifying circuit, measure differential amplifier circuit, first pressure transducer and first drive circuit, this analog-to-digital conversion circuit is connected with this processor, this analog-to-digital conversion circuit links to each other with this high pass amplifying circuit and transmits pulse signal, and with measure the differential amplifier circuit transmission measurement pressure signal that links to each other, this measurement differential amplifier circuit links to each other with this high pass amplifying circuit and first pressure transducer, and this first drive circuit links to each other with first pressure transducer and drives this first pressure transducer work.
The scheme that the present invention solves further technical problem is: described second measures branch road comprises the protection differential amplifier circuit; second pressure transducer and second drive circuit; this second pressure transducer links to each other with this protection differential amplifier circuit and second drive circuit respectively, and this protection differential amplifier circuit links to each other with this processor.
The scheme that the present invention solves further technical problem is: this blood pressure measuring circuit also comprises digital interface circuit, air pump air valve interface circuit and air valve, and this digital interface circuit links to each other with air pump air valve interface circuit, this air pump air valve interface circuit and this air valve.
The scheme that the present invention solves further technical problem is: this first pressure transducer and second pressure transducer are connected to a cuff, and described cuff links to each other with this air valve.
The scheme that the present invention solves further technical problem is: when the blood pressure school is zero, pick off does not connect cuff, the gaging pressure of this moment is 0 pressure, send school zero order by automatic correcting tool, first pressure transducer of this moment and the sampled value of second pressure transducer are saved in the nonvolatile storage as the school null value.
The scheme that the present invention solves further technical problem is: during the blood pressure calibration, pick off connects cuff, be inflated to certain pressure by automatic correcting tool, send calibration command, first pressure transducer and the sampled value of second pressure transducer and the ratio between the setup pressure value of this moment are calculated, obtain calibration factor and be saved in the nonvolatile storage.
Compared to prior art, blood pressure measuring circuit of the present invention has originally adopted automatic gauged method, has removed the potentiometer of manual adjustment; made things convenient for production; automatic zero adjustment and calibration only need eliminate the deviation of school zero-sum calibration, and the setting of pressure protect point be more flexible less than 5 seconds.
Description of drawings
Fig. 1 is the structural principle block diagram of blood pressure measuring circuit of the present invention.
The specific embodiment
As shown in Figure 1, blood pressure measuring circuit of the present invention comprises processor 11, nonvolatile storage 12; analog-to-digital conversion circuit 13; digital interface circuit 14, protection differential amplifier circuit 21, high pass amplifying circuit 22; measure differential amplifier circuit 23; air pump air valve interface circuit 24, the first pressure transducers 25, the first drive circuits 26; second pressure transducer, 27, the second drive circuits 28 and air valve 30.
Wherein said nonvolatile storage 12 links to each other with processor 11, and this processor 11 connects analog-to-digital conversion circuit 13 respectively, digital interface circuit 14 and protection differential amplifier circuit 21.This processor 11 and this protection differential amplifier circuit 21 transmission pressure guard signals, this analog-to-digital conversion circuit 13 link to each other with this high pass amplifying circuit 22 and transmit pulse signal, and the transmission measurement pressure signal that links to each other with measurement differential amplifier circuit 23.This measurement differential amplifier circuit 23 links to each other with this high pass amplifying circuit 22 and first pressure transducer 25, and this first drive circuit 26 links to each other with first pressure transducer 25 and drives this first pressure transducer, 25 work.
This digital interface circuit 14 links to each other with air pump air valve interface circuit 24, and this air pump air valve interface circuit 24 links to each other with this air valve 30 and an air pump.
This second pressure transducer 27 links to each other with this protection differential amplifier circuit 21 and second drive circuit 28 respectively.
This first pressure transducer 25 and second pressure transducer 27 are connected to a cuff, and described cuff links to each other with this air valve 30.
When the blood pressure school is zero, pick off does not connect cuff, the gaging pressure of this moment is 0 pressure, sends school zero order by automatic correcting tool, and first pressure transducer 25 of this moment and the sampled value of second pressure transducer 27 are saved in the nonvolatile storage 12 as the school null value.
During the blood pressure calibration, pick off connects cuff, be inflated to certain pressure by automatic correcting tool, send calibration command, first pressure transducer 25 and the sampled value of second pressure transducer 27 and the ratio between the setup pressure value of this moment are calculated, obtain calibration factor and be saved in the nonvolatile storage 12.
Software reads the school zero-sum calibration value of first pressure transducer 25 and second pressure transducer 27 from nonvolatile storage 12 when initialization.When actual measurement because pick off is linear, software according to the school null value of having preserved and calibration value according to following formula calculating pressure value:
The pressure of first pressure transducer=(sampled value 1-school null value 1) * calibration factor 1
The pressure of second pressure transducer=(sampled value 2-school null value 2) * calibration factor 2
Software timing carries out school zero to first pressure transducer when measuring at interval, the sampled value of first pressure transducer and the school null value that is kept in the nonvolatile storage are compared, deviation thinks just that less than 3mmHg the school null value is effective, eliminated the drift of pick off and circuit, and avoided because the error that the cuff residual pressure brings.
Software timing is judged the pressure of second pressure transducer; if (this force value can change according to the different measuring pattern to surpass the protection force value of setting; difference protection point more than 3 can be arranged), will stop air pump and open air valve, cuff pressure is dropped to 0.
Blood pressure measuring circuit of the present invention has originally adopted automatic gauged method; removed the potentiometer of manual adjustment, made things convenient for production, automatic zero adjustment and calibration only need be less than 5 seconds; eliminated the deviation of school zero-sum calibration, and the setting of pressure protect point is more flexible.
Above content be in conjunction with concrete preferred implementation to further describing that the present invention did, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (7)
1. blood pressure measuring circuit, it is characterized in that: it comprises processor, nonvolatile storage, first measures branch road and second measures branch road, wherein this processor first is measured branch road with this respectively, nonvolatile storage and second is measured branch road and is linked to each other, and measures blood pressure school null value and the blood pressure calibration value that branch road measures respectively by comparing this first measurement branch road and second, calibrates automatically.
2. blood pressure measuring circuit according to claim 1, it is characterized in that: described first measures branch road comprises analog-to-digital conversion circuit, the high pass amplifying circuit, measure differential amplifier circuit, first pressure transducer and first drive circuit, this analog-to-digital conversion circuit is connected with this processor, this analog-to-digital conversion circuit links to each other with this high pass amplifying circuit and transmits pulse signal, and with measure the differential amplifier circuit transmission measurement pressure signal that links to each other, this measurement differential amplifier circuit links to each other with this high pass amplifying circuit and first pressure transducer, and this first drive circuit links to each other with first pressure transducer and drives this first pressure transducer work.
3. blood pressure measuring circuit according to claim 2; it is characterized in that: described second measures branch road comprises the protection differential amplifier circuit; second pressure transducer and second drive circuit; this second pressure transducer links to each other with this protection differential amplifier circuit and second drive circuit respectively, and this protection differential amplifier circuit links to each other with this processor.
4. blood pressure measuring circuit according to claim 3, it is characterized in that: this blood pressure measuring circuit also comprises digital interface circuit, air pump air valve interface circuit and air valve, this digital interface circuit links to each other with air pump air valve interface circuit, this air pump air valve interface circuit and this air valve.
5. blood pressure measuring circuit according to claim 4 is characterized in that: this first pressure transducer and second pressure transducer are connected to a cuff, and described cuff links to each other with this air valve.
6. blood pressure measuring circuit according to claim 5, it is characterized in that: when the blood pressure school is zero, pick off does not connect cuff, the gaging pressure of this moment is 0 pressure, send school zero order by automatic correcting tool, first pressure transducer of this moment and the sampled value of second pressure transducer are saved in the nonvolatile storage as the school null value.
7. blood pressure measuring circuit according to claim 5, it is characterized in that: during the blood pressure calibration, pick off connects cuff, be inflated to certain pressure by automatic correcting tool, send calibration command, first pressure transducer and the sampled value of second pressure transducer and the ratio between the setup pressure value of this moment are calculated, obtain calibration factor and be saved in the nonvolatile storage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100661422A CN101536901B (en) | 2008-03-21 | 2008-03-21 | Blood pressure measuring circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100661422A CN101536901B (en) | 2008-03-21 | 2008-03-21 | Blood pressure measuring circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101536901A true CN101536901A (en) | 2009-09-23 |
| CN101536901B CN101536901B (en) | 2010-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100661422A Expired - Fee Related CN101536901B (en) | 2008-03-21 | 2008-03-21 | Blood pressure measuring circuit |
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| Country | Link |
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| CN (1) | CN101536901B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102551695A (en) * | 2012-01-09 | 2012-07-11 | 天津九安医疗电子股份有限公司 | Sphygmomanometer capable of starting and stopping automatically |
| CN102743164A (en) * | 2012-06-29 | 2012-10-24 | 深圳市理邦精密仪器股份有限公司 | Hardware parameter compensation method and system of blood pressure measuring system |
| CN102998525A (en) * | 2011-09-15 | 2013-03-27 | 无锡华润矽科微电子有限公司 | Multifunctional single-phase electric energy measuring circuit and automatic ammeter calibrating method thereof |
| CN103598880A (en) * | 2013-10-11 | 2014-02-26 | 深圳市深迈医疗设备有限公司 | Invasive blood pressure monitor with automatic zero calibration function |
| CN112782468A (en) * | 2020-12-18 | 2021-05-11 | 福州轨道交通电气科技有限公司 | Train operation energy consumption metering method |
| WO2023151396A1 (en) * | 2022-02-08 | 2023-08-17 | 华为技术有限公司 | Method for calibrating blood pressure measurement function, and electronic device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5485848A (en) * | 1991-01-31 | 1996-01-23 | Jackson; Sandra R. | Portable blood pressure measuring device and method of measuring blood pressure |
| JP3581975B2 (en) * | 1997-01-06 | 2004-10-27 | 日本光電工業株式会社 | Blood pressure monitoring device |
| US6152881A (en) * | 1999-03-29 | 2000-11-28 | Vasocor, Inc. | Calibrated measurement of blood vessels and endothelium after reactive hyperemia and method therefor |
| EP1101441A1 (en) * | 1999-11-16 | 2001-05-23 | Microlife Corporation | Blood pressure monitor calibrating device |
| CN100349544C (en) * | 2004-08-16 | 2007-11-21 | 深圳迈瑞生物医疗电子股份有限公司 | Improved electronic blood pressure-detecting method and device |
| US7674231B2 (en) * | 2005-08-22 | 2010-03-09 | Massachusetts Institute Of Technology | Wearable pulse wave velocity blood pressure sensor and methods of calibration thereof |
-
2008
- 2008-03-21 CN CN2008100661422A patent/CN101536901B/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102998525A (en) * | 2011-09-15 | 2013-03-27 | 无锡华润矽科微电子有限公司 | Multifunctional single-phase electric energy measuring circuit and automatic ammeter calibrating method thereof |
| CN102998525B (en) * | 2011-09-15 | 2016-06-08 | 无锡华润矽科微电子有限公司 | Single-phase multifunctional electric energy metering circuit and ammeter automatic calibrating method thereof |
| CN102551695A (en) * | 2012-01-09 | 2012-07-11 | 天津九安医疗电子股份有限公司 | Sphygmomanometer capable of starting and stopping automatically |
| CN102551695B (en) * | 2012-01-09 | 2014-04-30 | 天津九安医疗电子股份有限公司 | Sphygmomanometer capable of starting and stopping automatically |
| CN102743164A (en) * | 2012-06-29 | 2012-10-24 | 深圳市理邦精密仪器股份有限公司 | Hardware parameter compensation method and system of blood pressure measuring system |
| CN102743164B (en) * | 2012-06-29 | 2014-02-12 | 深圳市理邦精密仪器股份有限公司 | Hardware parameter compensation method and system of blood pressure measuring system |
| CN103598880A (en) * | 2013-10-11 | 2014-02-26 | 深圳市深迈医疗设备有限公司 | Invasive blood pressure monitor with automatic zero calibration function |
| CN112782468A (en) * | 2020-12-18 | 2021-05-11 | 福州轨道交通电气科技有限公司 | Train operation energy consumption metering method |
| WO2023151396A1 (en) * | 2022-02-08 | 2023-08-17 | 华为技术有限公司 | Method for calibrating blood pressure measurement function, and electronic device |
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| Publication number | Publication date |
|---|---|
| CN101536901B (en) | 2010-09-08 |
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Free format text: FORMER OWNER: YU XINHUA Owner name: SHENZHEN ADECON TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: TIAN XIAOFAN Effective date: 20110402 |
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Free format text: CORRECT: ADDRESS; FROM: 518000 A2-14C, BUILDING A, XIHAI GARDEN, NANSHAN DISTRICT, SHENZHEN CITY, GUANGDONG PROVINCE TO: 518116 203, FACTORY BUILDING NO. 1, SHANGRONG SCIENCE AND TECHNOLOGY INDUSTRIAL PARK, NO. 2, BAOLONG ROAD 5, BAOLONG COMMUNITY, LONGGANG SUBDISTRICT, LONGGANG DISTRICT, SHENZHEN CITY, GUANGDONG PROVINCE |
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Effective date of registration: 20110402 Address after: Five road in Longgang District of Shenzhen City, Guangdong province 518116 Longgang Street No. 2 Baolong Baolong community Shangrong Technology Industrial Park, No. 1 building 203 Patentee after: Shenzhen ADECON Technology Co., Ltd. Address before: 518000 A building, West Garden, Nanshan District, Guangdong, Shenzhen, A2-14C Co-patentee before: Yu Xinhua Patentee before: Tian Xiaofan |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100908 Termination date: 20190321 |