CN102824167B - Overpressure protection device for non-invasive sphygmomanometer and threshold setting method thereof - Google Patents
Overpressure protection device for non-invasive sphygmomanometer and threshold setting method thereof Download PDFInfo
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- CN102824167B CN102824167B CN201210332046.4A CN201210332046A CN102824167B CN 102824167 B CN102824167 B CN 102824167B CN 201210332046 A CN201210332046 A CN 201210332046A CN 102824167 B CN102824167 B CN 102824167B
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Abstract
The invention discloses an overpressure protection device for a non-invasive sphygmomanometer and a threshold setting method of the overpressure protection device for the non-invasive sphygmomanometer. The overpressure protection device comprises a control device, a rectifier device, a comparator and a pressure sensor, wherein the control device is used for sending different PWM (Pulse Width Modulation) signals to the rectifier device; the rectifier device is used for rectifying the PWM signals and sending a rectified direct-current signal to the comparator; the comparator is used for comparing the direct-current signal with an output signal of the pressure sensor; and when a value of the output signal of the pressure sensor is not less than that of the direct-current signal, the comparator sends a control signal to the control device. Within a certain time if the control device does not receive the control signal, frequencies and duty ratios of the PWM signals are changed and the PEM signals are output, and if the control device receives the control signals, the frequencies and the duty ratios of the PWM signals are stored.
Description
Technical field
The present invention relates to sphygomanometer technical field, be specifically related to a kind of non-invasive blood pressure measuring over-pressure safety device and threshold setting method thereof.
Background technology
According to NIBP (automated non-invasive blood pressure; the non-invasive manometry of automatization) standard-required; medical non-destructive blood pressure measurement will adopt hardware over-voltage protection and software overvoltage protection double technique, guarantees can not cause damage to patient because the blowing pressure is too high in the time of Measure blood pressure.In existing technology; the adjustment of the hardware over-voltage protection point of medical non-destructive blood pressure measurement module; by the variable-resistance resistance in manual change's circuit; thereby change its partial pressure value on circuit; in the time that partial pressure value equals magnitude of voltage that overpressure protection pressure point produces, hardware over-voltage protection point has been adjusted.There are two technical problems in this method: (1) manual debugging error, and hardware over-voltage protection point arranges inaccurate; (2) debug time is long, and efficiency is low.
Summary of the invention
The features and advantages of the present invention are partly statement in the following description, or can be apparent from this description, or can learn by putting into practice the present invention.
For the problem of prior art; the invention provides a kind of non-invasive blood pressure measuring over-pressure safety device and threshold setting method thereof; non-invasive blood pressure measuring over-pressure safety device of the present invention receives and arranges after the instruction of hardware over-voltage protection point; can automatically complete the setting of hardware over-voltage protection point under full measurement pattern; in the setting up procedure of hardware over-voltage protection point, except sending enabled instruction, no longer need artificial participation.By non-invasive blood pressure measuring over-pressure safety device of the present invention and threshold setting method thereof, can solve hardware over-voltage protection point that manual method exists and arrange inaccurately, debug time is long, inefficient two large technical problems.
The present invention for solving the problems of the technologies described above adopted technical scheme is:
The invention provides a kind of non-invasive blood pressure measuring over-pressure safety device and threshold setting method thereof,
According to an aspect of the present invention, the invention provides a kind of non-invasive blood pressure measuring over-pressure safety device, comprise control device, fairing, comparator and pressure transducer, this control device, this fairing is connected successively with this comparator, this comparator is connected with this control device with this pressure transducer respectively, this control device is for sending different pwm signals to this fairing, this fairing is for carrying out rectification and the direct current signal after rectification is sent to this comparator this pwm signal, this comparator is for comparing the output signal of this direct current signal and this pressure transducer, in the time that the output signal of this pressure transducer is more than or equal to this direct current signal, this comparator transmits control signal to this control device.
Preferably, in blood pressure measurement process, in the time that this control device is received this control signal, start overvoltage protection program.
Preferably; in the setting up procedure of overvoltage protection threshold value; if this control device is not received this control signal within a certain period of time; change frequency and the dutycycle of this pwm signal and export this pwm signal; if this control device is received this control signal, store frequency and the dutycycle of this pwm signal.
Preferably, this control device is preserved frequency and the dutycycle of this pwm signal under adult mode, children's's pattern and neonate pattern.
According to embodiments of the invention, this control device is made as single-chip microcomputer.
According to another aspect of the present invention, the invention provides a kind of non-invasive blood pressure measuring overvoltage protection threshold setting method, comprise step:
A1, pwm signal is carried out to rectification;
A2, the direct current signal obtaining after rectification and blood pressure signal are compared;
A3, within a certain period of time changes frequency and the dutycycle of this pwm signal in the time that this blood pressure signal is less than this direct current signal, preserves frequency and the dutycycle of this pwm signal in the time that this blood pressure signal is more than or equal to this direct current signal.
Preferably, this steps A 3 comprises step: frequency and the dutycycle of preserving this pwm signal under adult mode, children's's pattern and neonate pattern.
Beneficial effect of the present invention: non-invasive blood pressure measuring over-pressure safety device of the present invention and threshold setting method thereof; the mode that adopts PWM to control arranges over-voltage protection point magnitude of voltage; not only can complete faster hardware over-voltage protection; and the hardware over-voltage of adjusting a protection corresponding magnitude of voltage is also more accurate, more reliable.The invention enables the adjustment of non-invasive blood pressure measurement module hardware over-voltage protection point to simplify; high efficiency; save a large amount of manpowers; by multimode parallel debugging; adopt technical solution of the present invention, can send hardware over-voltage protection to all blood pressure measurement modules by a people completely simultaneously instruction is set, and need not do again other operations; just can realize rapidly the automatic adjustment of module hardware over-voltage protection point in enormous quantities, increase substantially production efficiency.
Brief description of the drawings
Below by describing particularly the present invention with reference to accompanying drawing and in conjunction with example, advantage of the present invention and implementation will be more obvious, wherein content shown in accompanying drawing is only for explanation of the present invention, and do not form the restriction of going up in all senses of the present invention, in the accompanying drawings:
Fig. 1 is non-invasive blood pressure measuring over-pressure safety device schematic diagram of the present invention;
Fig. 2 is non-invasive blood pressure measuring overvoltage protection threshold setting method flow chart of the present invention;
Fig. 3 is non-invasive blood pressure measuring overvoltage protection threshold value using method flow chart of the present invention.
Detailed description of the invention
As shown in Figure 1, non-invasive blood pressure measuring over-pressure safety device of the present invention comprises control device, fairing, comparator and pressure transducer, control device, fairing is connected successively with comparator, comparator is connected with control device with pressure transducer respectively, control device is for sending pwm signal to fairing, fairing is for carrying out rectification and the direct current signal after rectification is sent to comparator pwm signal, comparator is for comparing the output signal of direct current signal and pressure transducer, in the time that the output signal of pressure transducer is more than or equal to this direct current signal, comparator transmits control signal to control device.Preferably, in blood pressure measurement process, in the time that control device is received control signal, start overvoltage protection program.In the setting up procedure of overvoltage protection threshold value; if control device is not received control signal within a certain period of time; change frequency and dutycycle the output pwm signal of pwm signal, if control device is received control signal, store frequency and the dutycycle of pwm signal.Control device is preserved frequency and the dutycycle of the pwm signal under adult mode, children's's pattern and neonate pattern.According to embodiments of the invention, control device is made as single-chip microcomputer.
As shown in Figure 2, non-invasive blood pressure measuring overvoltage protection threshold setting method of the present invention, comprises step:
A1, pwm signal is carried out to rectification;
A2, the direct current signal obtaining after rectification and blood pressure signal are compared;
A3, within a certain period of time changes frequency and the dutycycle of pwm signal in the time that blood pressure signal is less than direct current signal, preserves frequency and the dutycycle of pwm signal in the time that blood pressure signal is more than or equal to direct current signal.
Preferably, steps A 3 comprises step: frequency and the dutycycle of preserving the pwm signal under adult mode, children's's pattern and neonate pattern.
As shown in Figure 3, non-invasive blood pressure measuring overvoltage protection threshold value using method of the present invention, comprises step:
B1, judge measurement pattern;
B2, read frequency and the dutycycle of corresponding pwm signal according to measurement pattern;
B3, export described pwm signal.
Before using technical solution of the present invention, over-voltage protection point adjustment process needs operator's complete monitoring, and disparate modules over-voltage protection point range of error can reach 10mmHg, and whole debug time needs 30 minutes; Use after technical solution of the present invention; adjustment process does not need operator's complete monitoring, and disparate modules over-voltage protection point range of error is less than 3mmHg, and whole debug process shortens to 15 minutes; and by the multiple modules of while parallel debugging, actual debugging efficiency significantly promotes.
With reference to the accompanying drawings of the preferred embodiments of the present invention, those skilled in the art do not depart from the scope and spirit of the present invention above, can have multiple flexible program to realize the present invention.For example, illustrate as the part of an embodiment or the feature described can be used for another embodiment to obtain another embodiment.These are only the better feasible embodiment of the present invention, not thereby limit to interest field of the present invention, the equivalence that all utilizations description of the present invention and accompanying drawing content are done changes, within being all contained in interest field of the present invention.
Claims (4)
1. a non-invasive blood pressure measuring over-pressure safety device, it is characterized in that: comprise control device, fairing, comparator and pressure transducer, described control device, described fairing is connected successively with described comparator, described comparator is connected with described control device with described pressure transducer respectively, described control device is for sending different pwm signals to described fairing, described fairing is for carrying out rectification and the direct current signal after rectification is sent to described comparator described pwm signal, described comparator is for comparing the output signal of described direct current signal and described pressure transducer, in the time that the output signal of described pressure transducer is more than or equal to described direct current signal, described comparator transmits control signal to described control device, if described control device is not received described control signal within a certain period of time, change frequency and the dutycycle of described pwm signal and export described pwm signal, if described control device is received described control signal, store frequency and the dutycycle of described pwm signal.
2. non-invasive blood pressure measuring over-pressure safety device according to claim 1, is characterized in that: in blood pressure measurement process, in the time that described control device is received described control signal, start overvoltage protection program.
3. non-invasive blood pressure measuring over-pressure safety device according to claim 1, is characterized in that: described control device is preserved frequency and dutycycle, the frequency of children's's pattern pwm signal and frequency and the dutycycle of dutycycle and neonate pattern pwm signal of adult mode pwm signal.
4. non-invasive blood pressure measuring over-pressure safety device according to claim 1, is characterized in that: described control device is made as single-chip microcomputer.
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| CN201210332046.4A CN102824167B (en) | 2012-09-07 | 2012-09-07 | Overpressure protection device for non-invasive sphygmomanometer and threshold setting method thereof |
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| CN201210332046.4A CN102824167B (en) | 2012-09-07 | 2012-09-07 | Overpressure protection device for non-invasive sphygmomanometer and threshold setting method thereof |
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| CN105326488B (en) * | 2015-11-25 | 2018-07-06 | 西安交通大学 | A kind of blood pressure measurement overvoltage time-out comprehensive protector and method |
| CN106026978B (en) * | 2016-05-11 | 2018-11-27 | 广州视源电子科技股份有限公司 | PWM circuit duty ratio adjusting method and system of 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 |
| CN109452927A (en) * | 2018-11-30 | 2019-03-12 | 深圳市眼科医院 | A kind of foveal region of retina arterial pressure measurement protective device and guard method |
| CN109452929A (en) * | 2018-11-30 | 2019-03-12 | 深圳市华智康电子有限公司 | It is a kind of to utilize the foveal region of retina arterial pressure measurement double protecting device of single-chip microcontroller and guard method |
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| US5240008A (en) * | 1991-09-30 | 1993-08-31 | Siemens Medical Electronics, Inc. | Inflation control apparatus for an automatic blood pressure gauge |
| 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 |
| US7468038B2 (en) * | 2005-12-20 | 2008-12-23 | Shenzhen Mindray Bio-Medical Electronics Co., Ltd. | Non-invasive electronic method and apparatus for measuring blood pressure |
| CN102579025B (en) * | 2011-12-23 | 2014-11-05 | 深圳市理邦精密仪器股份有限公司 | Pressure protection method and pressure protection apparatus used in non-invasive blood pressure measurement process |
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