CN104188643A - Pressure control circuit and control method for blood pressure measurement - Google Patents
Pressure control circuit and control method for blood pressure measurement Download PDFInfo
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- CN104188643A CN104188643A CN201410474828.0A CN201410474828A CN104188643A CN 104188643 A CN104188643 A CN 104188643A CN 201410474828 A CN201410474828 A CN 201410474828A CN 104188643 A CN104188643 A CN 104188643A
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- 238000000034 method Methods 0.000 title claims abstract description 42
- 238000009530 blood pressure measurement Methods 0.000 title claims abstract description 22
- 230000002572 peristaltic effect Effects 0.000 claims abstract description 68
- 230000036772 blood pressure Effects 0.000 claims description 40
- 239000000284 extract Substances 0.000 claims description 23
- 230000003750 conditioning effect Effects 0.000 claims description 15
- 230000007423 decrease Effects 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 4
- 238000007872 degassing Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 238000013022 venting Methods 0.000 description 2
- 101100434411 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) ADH1 gene Proteins 0.000 description 1
- 101150102866 adc1 gene Proteins 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
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Abstract
The invention relates to a pressure control circuit and control method for blood pressure measurement. The control circuit comprises a pressure sensor, a signal processing circuit, a microcontroller, a PWM (pulse-width modulation) controller and a peristaltic pump. The pressure sensor is connected with the input end of the signal processing circuit, the output end of the signal processing circuit is connected with the input end of the microcontroller, the output end of the microcontroller is connected with the input end of the PWM controller, and the output end of the PWM controller is connected with the peristaltic pump; the pressure sensor collects mixed signals of pressure and pulse waves, the signal processing circuit receives the mixed signals and has the same processed to acquire pressure feedback signals and pulse wave signals, the pressure feedback signals and the pulse wave signals are sent to the microcontroller, and the microcontroller sends control signals to the PWM controller after being subjected to comparison and PI adjustment, the PWM controllers sends out the PWM signals with the corresponding pulse width to complete control of the peristaltic pump. Compared with the prior art, the pressure control circuit and control method has the advantages that the pressure can be effectively controlled to change uniformly during measurement, and measurement precision is improved.
Description
Technical field
The present invention relates to technical field of medical instruments, especially relate to a kind of pressure control circuit for blood pressure measurement and control method.
Background technology
Electric sphygmomanometer, in blood pressure measurement process, in order to obtain accurate blood pressure measurement, must ensure that pulse wave is that pressure at the uniform velocity changes in whole measuring process uniformly in each pressure spot information.In traditional blood pressure lowering measuring blood pressure machine is measured, at the uniform velocity vent valve plays pivotal role.And in step up side blood pressure machine is measured, metering system is the same with blood pressure lowering measuring principle, just, in the process of boosting, if require pressure at the uniform velocity to change, just must control the rotating speed nonlinear change of inflator pump.If that controls is accurate not, in the process of boosting, easily cause air-flow unstable, rate of pressure change is inhomogeneous, and measurement result easily causes deviation.At present, electric sphygmomanometer progressively replaces traditional mercury sphygmomanometer, and adopts air pump to carry out pressure controlled electric sphygmomanometer, exists air pump control accuracy to have limitation, and simultaneously air pump need additionally arrange vent valve, the defect such as exit.
Therefore no matter need to research and develop a kind of pressure control circuit for high accuracy blood pressure measurement and control method, be blood pressure lowering measuring method or step up side metering method, can both be in whole measuring process effectively controlled pressure at the uniform velocity change, thereby improve certainty of measurement.
Summary of the invention
Object of the present invention is exactly to provide a kind of pressure control circuit for blood pressure measurement and control method in order to overcome the defect that above-mentioned prior art exists, and in measuring process, controlled pressure at the uniform velocity changes effectively, improves certainty of measurement.
Object of the present invention can be achieved through the following technical solutions:
A kind of pressure control circuit for blood pressure measurement, comprise pressure transducer, signal conditioning circuit, microcontroller, PWM controller and peristaltic pump, the outfan of described pressure transducer connects the input of signal conditioning circuit, the outfan of described signal conditioning circuit connects the input of microcontroller, the outfan of described microcontroller connects the input of PWM controller, and the outfan of described PWM controller connects peristaltic pump;
Pressure transducer gathers the mixed signal of pressure and pulse wave, signal conditioning circuit receives mixed signal and processes, obtain pressure feedback signal and pulse wave signal and send to microcontroller, microcontroller is after comparison, PI regulate, transmit control signal to PWM controller, PWM controller sends the pwm signal of corresponding pulsewidth, completes the control to peristaltic pump.
Described signal conditioning circuit comprises that pressure signal amplifier and pulse signal extract circuit, the input Bonding pressure sensor of described pressure signal amplifier, outfan connects respectively pulse signal and extracts the input of circuit and the first input end of microcontroller, described pulse signal extracts the second input of the outfan connection microcontroller of circuit, pressure signal amplifier amplifies the mixed signal of pressure and pulse wave, its outfan output pressure feedback signal, pulse signal extracts circuit and receives after input signal, therefrom extract pulse wave signal output.
Described signal amplifier is AD620 chip.
Described pulse signal extracts circuit and comprises analog band-pass filter and emitter follower, the outfan of the input Bonding pressure signal amplifier of described analog band-pass filter, outfan connects the input of emitter follower, the outfan of described emitter follower connects the second input of microcontroller, and described emitter follower is LM358 chip.
Described microcontroller is STM32f103 chip.
Described pressure transducer is MD-PSG010 chip.
Described PWM controller is L293B chip.
For a compress control method for blood pressure measurement, comprise the compress control method of blood pressure lowering measuring blood pressure or the compress control method of step up side blood pressure;
The compress control method concrete steps of described blood pressure lowering measuring blood pressure are:
101: start detected pressures signal and pulse wave signal, send Quick-pressing instruction to peristaltic pump, now, open loop control is carried out in the pulse of sending dutycycle 80% to peristaltic pump by PWM controller, and peristaltic pump is rotated in the forward pressurization;
102: when detecting that pressure signal reaches after preset value, send to peristaltic pump the instruction of at the uniform velocity exitting, start adjustable pressure drops low rate with 0.3mmHg/ millisecond speed, now, closed loop control is carried out in the pulse that PWM controller sends dutycycle 30% to peristaltic pump, peristaltic pump reverse rotation blood pressure lowering;
103: when pulse wave peak value starts to decline, and reach peak-peak 50% time, send detection end signal, PWM controller sends the pulse of dutycycle 80% to peristaltic pump, peristaltic pump reverse rotation blood pressure lowering, until the pressure signal detecting is 0;
The compress control method concrete steps of described step up side blood pressure are:
S1: start detected pressures signal and pulse wave signal, send even pressurization instruction to peristaltic pump, start to regulate pressure to advance the speed with 0.3mmHg/ millisecond speed, now, the pwm signal that PWM controller sends 10%30% variable impulse width to peristaltic pump carries out closed loop control, and peristaltic pump is rotated in the forward and pressurizes;
S2: when detecting that blood pressure is completed, be that pulse wave peak value starts to decline, and reach 50% of peak-peak, send Rapid degassing instruction to peristaltic pump, now, open loop control is carried out in the pulse that PWM controller sends dutycycle 80% to peristaltic pump, and peristaltic pump reverse rotation, until the pressure signal detecting is 0.
Described closed loop control is: the pressure signal of feedback and default pressure distribution curve are contrasted, if there is error, after adjusting, send corresponding pulses by PWM controller to peristaltic pump by pi regulator.
Compared with prior art, the present invention has the following advantages:
1) in the present invention, boost to detect and in controlling of blood pressure method, control peristaltic pump pressure and at the uniform velocity change, accurate by closed loop control steady air current, make to measure more precisely, fast;
2) in the present invention, in blood pressure lowering detection controlling of blood pressure method, utilize peristaltic pump reversion (air-breathing special type) to realize nature venting, can omit traditional vent valve, make blood pressure lowering pressure process even variation by closed loop control, make blood pressure measurement more fast with accurate;
3) in pressure control circuit of the present invention, adopt peristaltic pump to replace traditional air pump, speed adjusting performance is better, thin device;
4) pressure control circuit of the present invention comprises PWM controller, uses pulse width modulated modulation (PWM) technology, energy-conservation, and speed governing is more convenient;
5) pressure control circuit of the present invention comprises microcontroller, by the function that it is realized relatively and PI regulates, PWM is controlled more accurate, being about to the pressure signal of feedback and default pressure distribution curve contrasts, if there is error, regulate after adjustment by PI, send corresponding pulses by PWM controller to peristaltic pump;
6) in pressure control circuit of the present invention, signal processor comprises that pressure signal amplifier and pulse signal extract circuit, pressure signal amplifier is made up of high-precision meter amplifier AD620, complete the amplification of pressure signal, pulse signal extracts circuit and is made up of analog band-pass filter and emitter follower amplifier LM358, complete the extraction of pulse wave signal, pressure signal and pulse wave signal are controlled to parameter as PI, be convenient to realize exactly the control of pressure.
Brief description of the drawings
Fig. 1 is the structural representation of pressure control circuit in the present invention;
Fig. 2 is pressure control block diagram in the present invention;
Fig. 3 is the circuit diagram of microcontroller in the present invention;
Fig. 4 is the circuit diagram of pressure transducer, signal conditioning circuit in the present invention;
Fig. 5 is the circuit diagram of PWM controller in the present invention;
Fig. 6 is blood pressure lowering measuring blood pressure curve chart in the present invention;
Fig. 7 is step up side blood pressure curve figure in the present invention.
In figure: 1, pressure transducer, 2, microcontroller, 3, PWM controller, 4, peristaltic pump, 5, cuff, U1, signal amplifier, U2, pulse signal extract circuit.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.The present embodiment is implemented as prerequisite taking technical solution of the present invention, provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
As shown in Figure 1, a kind of pressure control circuit for blood pressure measurement, comprise pressure transducer 1, signal conditioning circuit, microcontroller 2, PWM controller 3 and peristaltic pump 4, pressure transducer 1 outfan connects the input of signal conditioning circuit, signal conditioning circuit outfan connects microcontroller 2 inputs, microcontroller 2 outfans connect PWM controller 3 inputs, and PWM controller 3 outfans connect peristaltic pump 4.
As shown in Figure 2, in the time that fed back pressure signal has been compared error with required pressure distribution curve, regulate and calculate by the PI of microcontroller 2, can obtain the needed pulsewidth of PWM; By PWM controller 3, the pwm signal of variable impulse width is amplified, control the forward and reverse rotation of peristaltic pump 4; Peristaltic pump 4 is controlled cuff 5 and is filled, exits; Pressure transducer 1 is located in cuff 5, completes collection, amplification and the conversion of pressure signal and pulse wave signal, and feeds back to the input of microcontroller 2, proceeds subsequent treatment.
As shown in Figure 3, signal conditioning circuit comprises that pressure signal amplifier U1 and pulse signal extract circuit U 2, pressure signal amplifier U1 input Bonding pressure sensor 1, outfan connects respectively pulse signal and extracts circuit U 2 inputs and microcontroller 2 first input ends, pulse signal extracts the second input of the outfan connection microcontroller 2 of circuit U 2, pressure signal amplifier U1 amplifies the mixed signal of pressure and pulse wave, its outfan output pressure feedback signal, pulse signal extracts circuit U 2 and receives after input signal, therefrom extract pulse wave signal output.Pulse signal extracts circuit U 2 and comprises analog band-pass filter and emitter follower, the outfan of the input Bonding pressure signal amplifier of analog band-pass filter, outfan connects the input of emitter follower, and the outfan of emitter follower connects the second input of microcontroller.Wherein, signal amplifier U1 is AD620 chip, emitter follower is LM358 chip, pressure transducer 1 is MD-PSG010 chip, specifically be connected to: the output pin OUTPUT of AD620 connects the first input end of microcontroller 2, be labeled as the output terminals A DC0 of pressure signal amplifier U1, extract circuit U 2 by analog band-pass filter and emitter follower LM358 as pulse signal, its outfan is labeled as ADC1.
As shown in Figure 4, microcontroller 2 is STM32f103 chip, requires pressure distribution curve, comparator, PI to regulate and complete by microcontroller 2, thereby realize the corresponding control instruction of Fig. 2; Pin PB5, the PB6 of STM32f103 chip is as the outfan that connects PWM controller 3, pin PC0 is the second input, connect the output terminals A DC1 that pulse signal extracts circuit U 2, input pulse wave signal, pin PC1 is first input end, the output terminals A DC0 of Bonding pressure signal amplifier U1, input pressure feedback signal, also comprises the peripheral circuits that forms STM32f103 chip minimum system in Fig. 4.
Peristaltic pump 4 is controlled and is adopted pulse width modulated modulation (PWM) technology, significantly reduces cost and the power consumption of control system, and makes output smoothing, is easy to speed governing.As shown in Figure 5, wherein L293B is drive and control of electric machine chip to PWM controller 3, and it is as PWM controller 3.The corresponding pulsewidth of pwm signal is undertaken after PI regulates obtaining by STM32f103, the pin PB5 of STM32f103 connects the pin IN1 of L293B, the pin PB6 of STM32f103 connects the pin IN2 of L293B, L293B receives the output control signal of STM32f103, thereby complete the function that pwm signal amplifies and control peristaltic pump 4 rotates, L293B output pin OUT1 connects respectively the anode of D15, the pin 1 of the negative electrode of D17 and peristaltic pump 4 socket SJ-DJ, pin OUT2 connects respectively the anode of D16, the pin 2 of the negative electrode of D18 and peristaltic pump 4 socket SJ-DJ, D15, connect respectively+12V of the negative electrode of D16 power supply, D16, the anode of D17 connects the earth respectively, diode D15, D16, D17, D18 has formed holding circuit.In Fig. 5, also comprise: connect respectively+12V of pin ENA, the ENB of L293B, VSS power supply, pin VS connection+5V power supply, 4 pin GND connect respectively the earth.
Based on above-mentioned pressure control circuit, adopt a kind of compress control method to realize blood pressure measurement, comprise the compress control method of blood pressure lowering measuring blood pressure or the compress control method of step up side blood pressure.
As shown in Figure 6, the compress control method concrete steps of blood pressure lowering measuring blood pressure are:
101: start detected pressures signal and pulse wave signal, (the 102nd point in corresponding diagram 6 after 3.06 seconds, sample rate is 33.3Hz), send Quick-pressing instruction to peristaltic pump 4, now, sending dutycycle by PWM controller 3 to peristaltic pump 4 is that open loop control is carried out in 80% pulse, and peristaltic pump 4 is rotated in the forward pressurization;
102: when detecting that pressure signal reaches after preset value, send to peristaltic pump 4 instruction of at the uniform velocity exitting, start adjustable pressure drops low rate with 0.3mmHg/ millisecond speed, now, it is that closed loop control is carried out in 30% pulse that PWM controller 3 sends dutycycle to peristaltic pump 4, and peristaltic pump 4 counter-rotates blood pressure lowering;
103: when pulse wave peak value starts to decline, and while reaching 50% (the 1300th point in corresponding diagram 6) of peak-peak, sending detection end signal, it is 80% pulse that PWM controller 3 sends dutycycle to peristaltic pump 4, peristaltic pump 4 counter-rotates blood pressure lowering, until the pressure signal detecting is 0.
The pressure signal and the pulse wave signal that gather according to blood pressure lowering process, calculate and obtain pressure value.
As shown in Figure 7, the compress control method concrete steps of step up side blood pressure are:
S1: start detected pressures signal and pulse wave signal, send even pressurization instruction to peristaltic pump 4, start to regulate pressure to advance the speed with 0.3mmHg/ millisecond speed, now, the pwm signal that PWM controller 3 sends 10%～30% variable impulse width to peristaltic pump 4 carries out closed loop control, and peristaltic pump 4 is rotated in the forward and pressurizes;
S2: when detecting that blood pressure is completed, be that pulse wave peak value starts to decline, and reach 50% of peak-peak, send Rapid degassing instruction to peristaltic pump 4, now, it is that open loop control is carried out in 80% pulse that PWM controller 3 sends dutycycle to peristaltic pump 4, and peristaltic pump 4 counter-rotates, until the pressure signal detecting is 0.
The pressure signal and the pulse wave signal that gather according to the process of boosting, calculate and obtain pressure value.
Closed loop control is: the pressure signal of feedback and default pressure distribution curve are contrasted, if there is error e, after adjusting, send corresponding pulses by PWM controller 3 to peristaltic pump 4 by pi regulator.
Above-mentioned compress control method can be in buck/boost measurement method measuring process, utilizes peristaltic pump 4 to coordinate inflation rate control method and forms specific airing form and venting mechanism.
Claims (9)
1. the pressure control circuit for blood pressure measurement, it is characterized in that, comprise pressure transducer, signal conditioning circuit, microcontroller, PWM controller and peristaltic pump, described pressure transducer connects the input of signal conditioning circuit, the outfan of described signal conditioning circuit connects the input of microcontroller, the outfan of described microcontroller connects the input of PWM controller, and the outfan of described PWM controller connects peristaltic pump;
Pressure transducer gathers the mixed signal of pressure and pulse wave, signal conditioning circuit receives mixed signal and processes, obtain pressure feedback signal and pulse wave signal and send to microcontroller, microcontroller is after comparison, PI regulate, transmit control signal to PWM controller, PWM controller sends the pwm signal of corresponding pulsewidth, completes the control to peristaltic pump.
2. a kind of pressure control circuit for blood pressure measurement according to claim 1, it is characterized in that, described signal conditioning circuit comprises that pressure signal amplifier and pulse signal extract circuit, the input Bonding pressure sensor of described pressure signal amplifier, outfan connects respectively pulse signal and extracts the input of circuit and the first input end of microcontroller, described pulse signal extracts the second input of the outfan connection microcontroller of circuit, pressure signal amplifier amplifies the mixed signal of pressure and pulse wave, its outfan output pressure feedback signal, pulse signal extracts circuit and receives after input signal, therefrom extract pulse wave signal output.
3. a kind of pressure control circuit for blood pressure measurement according to claim 2, is characterized in that, described signal amplifier is AD620 chip.
4. a kind of pressure control circuit for blood pressure measurement according to claim 2, it is characterized in that, described pulse signal extracts circuit and comprises analog band-pass filter and emitter follower, the outfan of the input Bonding pressure signal amplifier of described analog band-pass filter, outfan connects the input of emitter follower, the outfan of described emitter follower connects the second input of microcontroller, and described emitter follower is LM358 chip.
5. a kind of pressure control circuit for blood pressure measurement according to claim 1, is characterized in that, described microcontroller is STM32f103 chip.
6. a kind of pressure control circuit for blood pressure measurement according to claim 1, is characterized in that, described pressure transducer is MD-PSG010 chip.
7. a kind of pressure control circuit for blood pressure measurement according to claim 1, is characterized in that, described PWM controller is L293B chip.
8. for a compress control method for blood pressure measurement, it is characterized in that, comprise the compress control method of blood pressure lowering measuring blood pressure or the compress control method of step up side blood pressure;
The compress control method concrete steps of described blood pressure lowering measuring blood pressure are:
101: start detected pressures signal and pulse wave signal, send Quick-pressing instruction to peristaltic pump, now, open loop control is carried out in the pulse of sending dutycycle 80% to peristaltic pump by PWM controller, and peristaltic pump is rotated in the forward pressurization;
102: when detecting that pressure signal reaches after preset value, send to peristaltic pump the instruction of at the uniform velocity exitting, start adjustable pressure drops low rate with 0.3mmHg/ millisecond speed, now, closed loop control is carried out in the pulse that PWM controller sends dutycycle 30% to peristaltic pump, peristaltic pump reverse rotation blood pressure lowering;
103: when pulse wave peak value starts to decline, and reach peak-peak 50% time, send detection end signal, PWM controller sends the pulse of dutycycle 80% to peristaltic pump, peristaltic pump reverse rotation blood pressure lowering, until the pressure signal detecting is 0;
The compress control method concrete steps of described step up side blood pressure are:
S1: start detected pressures signal and pulse wave signal, send even pressurization instruction to peristaltic pump, start to regulate pressure to advance the speed with 0.3mmHg/ millisecond speed, now, the pwm signal that PWM controller sends 10%～30% variable impulse width to peristaltic pump carries out closed loop control, and peristaltic pump is rotated in the forward and pressurizes;
S2: when detecting that blood pressure is completed, be that pulse wave peak value starts to decline, and reach 50% of peak-peak, send Rapid degassing instruction to peristaltic pump, now, open loop control is carried out in the pulse that PWM controller sends dutycycle 80% to peristaltic pump, and peristaltic pump reverse rotation, until the pressure signal detecting is 0.
9. a kind of compress control method for blood pressure measurement according to claim 8, it is characterized in that, described closed loop control is: the pressure signal of feedback and default pressure distribution curve are contrasted, if there is error, after adjusting by pi regulator, send corresponding pulses by PWM controller to peristaltic pump.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107049290A (en) * | 2017-04-17 | 2017-08-18 | 北京大学 | A kind of ambulatory blood pressure measuring method and system |
| CN107260148A (en) * | 2017-07-12 | 2017-10-20 | 北京卫嘉高科信息技术有限公司 | A kind of blood pressure measuring method, storage device and device |
| TWI604821B (en) * | 2016-11-11 | 2017-11-11 | Microlife Corp | Blood pressure measurement device with a mems pump and control method for the same |
| CN107536605A (en) * | 2017-09-05 | 2018-01-05 | 广州视源电子科技股份有限公司 | A kind of pwm circuit dutyfactor adjusting method, controller and blood pressure measuring device |
| CN108053733A (en) * | 2018-01-24 | 2018-05-18 | 上海弘联医学科技集团有限公司 | It is a kind of can it is automatic continuous generate negative pressure epidural space simulator |
| CN108335600A (en) * | 2018-01-24 | 2018-07-27 | 上海弘联医学科技集团有限公司 | It is a kind of can it is automatic continuous generate negative pressure epidural space analogy method |
| CN108762484A (en) * | 2018-04-17 | 2018-11-06 | 西北工业大学 | Pneumatic analog method for the real tactile in physics human-computer interaction |
| CN109717854A (en) * | 2018-12-27 | 2019-05-07 | 武汉中旗生物医疗电子有限公司 | Blood pressure measuring method and equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1394546A (en) * | 2002-08-08 | 2003-02-05 | 天津市先石光学技术有限公司 | Blood pressure measuring device and method |
| CN1418595A (en) * | 2002-12-26 | 2003-05-21 | 天津市先石光学技术有限公司 | Wrist type electric sphygmomanometer, and its application method |
| US20110105917A1 (en) * | 2009-10-29 | 2011-05-05 | Cnsystems Medizintechnik Ag | Digital Control Method for Measuring Blood Pressure |
| CN103054567A (en) * | 2012-12-31 | 2013-04-24 | 邓亲恺 | Individual adaptive pressure increasing and decreasing control method for electronic sphygmomanometer |
| CN103690154A (en) * | 2014-01-06 | 2014-04-02 | 山东共达电声股份有限公司 | Hematomanometer |
-
2014
- 2014-09-17 CN CN201410474828.0A patent/CN104188643B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1394546A (en) * | 2002-08-08 | 2003-02-05 | 天津市先石光学技术有限公司 | Blood pressure measuring device and method |
| CN1418595A (en) * | 2002-12-26 | 2003-05-21 | 天津市先石光学技术有限公司 | Wrist type electric sphygmomanometer, and its application method |
| US20110105917A1 (en) * | 2009-10-29 | 2011-05-05 | Cnsystems Medizintechnik Ag | Digital Control Method for Measuring Blood Pressure |
| CN103054567A (en) * | 2012-12-31 | 2013-04-24 | 邓亲恺 | Individual adaptive pressure increasing and decreasing control method for electronic sphygmomanometer |
| CN103690154A (en) * | 2014-01-06 | 2014-04-02 | 山东共达电声股份有限公司 | Hematomanometer |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI604821B (en) * | 2016-11-11 | 2017-11-11 | Microlife Corp | Blood pressure measurement device with a mems pump and control method for the same |
| CN107049290A (en) * | 2017-04-17 | 2017-08-18 | 北京大学 | A kind of ambulatory blood pressure measuring method and system |
| CN107049290B (en) * | 2017-04-17 | 2020-05-29 | 北京大学 | Dynamic blood pressure measuring method and system |
| CN107260148A (en) * | 2017-07-12 | 2017-10-20 | 北京卫嘉高科信息技术有限公司 | A kind of blood pressure measuring method, storage device and device |
| CN107536605A (en) * | 2017-09-05 | 2018-01-05 | 广州视源电子科技股份有限公司 | A kind of pwm circuit dutyfactor adjusting method, controller and blood pressure measuring device |
| CN107536605B (en) * | 2017-09-05 | 2020-05-05 | 广州视源电子科技股份有限公司 | PWM circuit duty ratio adjusting method, controller and blood pressure measuring device |
| CN108053733A (en) * | 2018-01-24 | 2018-05-18 | 上海弘联医学科技集团有限公司 | It is a kind of can it is automatic continuous generate negative pressure epidural space simulator |
| CN108335600A (en) * | 2018-01-24 | 2018-07-27 | 上海弘联医学科技集团有限公司 | It is a kind of can it is automatic continuous generate negative pressure epidural space analogy method |
| CN108762484A (en) * | 2018-04-17 | 2018-11-06 | 西北工业大学 | Pneumatic analog method for the real tactile in physics human-computer interaction |
| CN109717854A (en) * | 2018-12-27 | 2019-05-07 | 武汉中旗生物医疗电子有限公司 | Blood pressure measuring method and equipment |
| CN109717854B (en) * | 2018-12-27 | 2021-10-08 | 武汉中旗生物医疗电子有限公司 | Blood pressure measuring device |
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| CN104188643B (en) | 2016-08-24 |
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