CN103690154A - Hematomanometer - Google Patents
Hematomanometer Download PDFInfo
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- CN103690154A CN103690154A CN201410004675.3A CN201410004675A CN103690154A CN 103690154 A CN103690154 A CN 103690154A CN 201410004675 A CN201410004675 A CN 201410004675A CN 103690154 A CN103690154 A CN 103690154A
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Abstract
The invention provides a hematomanometer. The hematomanometer comprises a cuff, an air passage, a pressure sensor, a signal processor, a voltage frequency converter, an air pump system and a communication interface, wherein the air passage is connected to the cuff; an output end of the air pump system is connected with the air passage; the pressure sensor is arranged in the cuff and is used for detecting static air pressure and pulse pressure signals generated by pulses; an output end of the pressure sensor is connected to an input end of the signal processor; an output end of the signal processor is connected to an input end of the voltage frequency converter; the communication interface comprises a signal inlet put, a signal output end and a ground terminal; an output end of the voltage frequency converter is connected to the signal output end of the communication interface; and the signal input end of the communication interface is connected to an input end of the air pump system. The size of the hematomanometer provided by the invention is reduced, so that the hematomanometer is convenient to carry and use.
Description
Technical field
The present invention relates to a kind of medical treatment detection device, be specifically related to a kind of sphygomanometer.
Background technology
Sphygomanometer is come into increasing family as the conventional medical treatment detection device of a kind of family.Sphygomanometer has two kinds at present, and a kind of is mercurial sphygmomanometer, and another is electric sphygmomanometer.Mercurial sphygmomanometer adopts Ke Shi audition method, needs another one people operation, whilst reading mercury column index after pressurization, with stethoscope listen pulse tone on one side, complicated operation and the personnel that are subject to affect greatly.The automatic Measure blood pressure of electric sphygmomanometer, auxiliary without personnel, its principle and Ke Shi audition method are similar, steady pressure in pressure transducer perception sleeve, the similar mercury column reading of using, the variation of the pulse pressure of perception simultaneously.
Electric sphygmomanometer conventionally adopts pwm signal to control air pump and realizes boosting and blood pressure lowering in cuff.Adopts pressure sensor in the cuff of electric sphygmomanometer, pressure transducer transmission static pressure and pulse pressure, static pressure can directly be measured, and pulse pressure is very faint, need, through measuring again after gain, according to algorithm, to correspond to static pressure, obtain diastolic pressure and systolic pressure.Measurement can be carried out in process is boosted in inflation, also can in blood pressure lowering deflation course, carry out.
In prior art, electric sphygmomanometer comprises battery, mainboard and display screen, in order to realize, the electronic surveying of blood pressure to be needed plug-in or independently battery compartment is set, control circuit due to integrated sphygomanometer on mainboard, therefore the space that mainboard takies is large, battery and display screen have increased the volume of sphygomanometer simultaneously, so, cause the volume of electric sphygmomanometer larger, be not easy to very much carry, affected the convenience of using.In sphygomanometer and communication of mobile terminal process, adopt the pairing process of wireless mode complicated, and sphygomanometer itself also need controller and screen etc.And its cost of equipment that adopts USB to communicate is also very high.
Summary of the invention
The invention provides a kind of sphygomanometer, complicated for the sphygomanometer of above-mentioned existence and the communication process of mobile terminal, can not measure fast and effectively the problem of controlling.
In order to address the above problem, the invention provides a kind of sphygomanometer, comprising: cuff, air flue, pressure transducer, signal processor, voltage to frequency converter, air pump system and communication interface;
Described air flue is connected with cuff; The outfan of described air pump system connects air flue;
Described pressure transducer is arranged in cuff, and described pressure transducer detects the pulse pressure signal of static air pressure and pulse generation; The outfan of described pressure transducer connects the input of signal processor; The outfan of described signal processor connects the input of voltage to frequency converter;
Described communication interface is comprised of signal input part, signal output part and earth terminal; The outfan of described voltage to frequency converter connects the signal output part of described communication interface; The signal input part of described communication interface connects the input of air pump system.
Further, the signal input part of described communication interface is by inflating and the drive circuit of exitting is controlled the inflation of air pump system and venting.
Further, described inflation drive circuit is mainly comprised of air pump AP, resistance R 4, multiple tube Q2 and diode (D2);
The outfan of described resistance R 4 connects the base stage of multiple tube Q2, the colelctor electrode of described multiple tube Q2 connects the negative pole of air pump AP, the positive pole of described air pump AP is connected with power supply, described multiple tube Q2 emitter stage connects the positive pole of diode D2, the negative pole of described diode D2 is connected on the positive pole of air pump AP, described multiple tube Q2 grounded emitter; The left-channel signal input of described communication interface sends pwm control signal, by resistance R 4, controls multiple tube Q2 switch, thereby controls the inflation of air pump AP.
Further, described venting drive circuit is mainly comprised of air escape cock K, resistance R 3, multiple tube Q1 and diode D1;
The outfan of described resistance R 3 connects the base stage of multiple tube Q1, the colelctor electrode of described multiple tube Q1 connects one end of air escape cock K, the other end of described air escape cock K is connected with power supply, the emitter stage of described multiple tube Q1 connects the positive pole of diode D1, the negative pole of described diode D1 is connected on one end that air escape cock K is connected with power supply, described multiple tube Q1 grounded emitter, the signal input part of described communication interface sends pwm control signal and controls venting.
Further, described air pump system is recently controlled air pump by amplitude and the duty of the signal input part output signal of communication interface inflation and venting speed.
Further, inflation and venting speed that described air pump system is recently controlled air pump by amplitude and the duty of the signal input part output signal of communication interface, specifically comprise:
The signal input part of described communication interface comprises left-channel signal input and right channel signal input;
Described air pump system is utilized the signal input part transmission audio signal of communication interface, and left or right passage produces the adjustable PWM square-wave signal of dutycycle, controls the speed of inflation;
Described air pump system is utilized the signal input part transmission audio signal of communication interface, and right or left passage can produce the adjustable PWM square-wave signal of dutycycle, controls the speed of venting.
Further, described voltage to frequency converter is by 555 elements, resistance R L, resistance R A, resistance R B, capacitor C 1, resistance R 1, resistance R 2 forms, 5 ends of described 555 elements link with the outfan of signal synthesizer, 4 ends of described 555 elements are connected with power supply with 8 ends, parallel resistance RL between 3 ends of described 555 elements and 8 ends, the two ends of described resistance R A connect respectively 7 ends and 8 ends of described 555 elements, the two ends of described resistance R B connect respectively 6 ends and 7 ends of described 555 elements, 6 ends of described 555 elements and 2 ends are by capacitor C 1 ground connection, one end of 3 end contact resistance R1 of described 555 elements, the other end of described resistance R 1 is connected with the signal output part of communication interface, the other end of described resistance R 1 is by resistance R 2 ground connection.
In the technical scheme of a kind of sphygomanometer provided by the invention, described signal processor comprises:
Preamplifier, described preamplifier receives static pressure signal and the pulse pressure signal being detected by pressure transducer, static pressure signal and pulse pressure signal is carried out to integral body and amplify and export amplifying signal;
Band filter, the input of described band filter is connected with the outfan of described preamplifier, static pressure amplifying signal and the pulse pressure amplifying signal of separated described preamplifier output;
Pulse amplifier, the input of described pulse amplifier is connected with the outfan of described band filter, and described pulse amplifier is to again amplifying through the isolated pulse pressure amplifying signal of described band filter;
Signal synthesizer, the input of described signal synthesizer connect the output of described preamplifier static pressure amplifying signal end and the outfan of described pulse amplifier, described signal synthesizer synthesizes static pressure signal and pulse signal after amplifying, and the outfan of described signal synthesizer is connected to the input of described voltage to frequency converter.
Further, described preamplifier is mainly comprised of amplifier A1, resistance R 5, resistance R 6;
One end of described resistance R 5 is the input of described preamplifier, the other end of described resistance R 5 is connected to the input of amplifier A1, the two ends of described resistance R 6 are connected with outfan with the input of amplifier A1 respectively, another input end grounding of described amplifier A1.
Further, described pulse amplifier is mainly comprised of amplifier A2, resistance R 7, resistance R 8;
One end of described resistance R 7 is the input of described pulse amplifier, and the other end of described R7 connects amplifier A2, and the two ends of described resistance R 8 are connected with outfan with the input of amplifier A2 respectively, another input end grounding of described amplifier A2.
Further, described signal synthesizer is adder, and described adder is mainly comprised of amplifier A3, resistance R 9, resistance R 10 and resistance R 11;
One end of described resistance R 9 is pulse amplifying signal input, one end of described resistance R 10 is static pressure amplifying signal input, the other end of described resistance R 9 is connected the input of amplifier A3 with the other end of resistance R 10, the two ends of described resistance R 11 are connected with outfan with the input of amplifier A3 respectively, another input end grounding of described A3.
The technical scheme that the invention provides another kind of signal synthesizer is: described signal synthesizer is alternative analog switch, 1 end of described analog switch is static pressure amplifying signal input, 3 ends of described analog switch are pulse amplifying signal input, 2 end ground connection of described analog switch, 4 ends of described analog switch are analoging switch output end, 5 ends of described analog switch connect power supply, and 6 ends of described analog switch are output control terminal, and the output signal of analoging switch output end is controlled.
The present invention also provides a kind of mobile terminal, comprising:
Signal input module, the blood pressure signal of exporting for receiving the signal output part of the communication interface of sphygomanometer;
Controller module, for the blood pressure signal of signal input module transmission is carried out to analyzing and processing, and generates controlling of blood pressure information;
Signal output module, for receiving the controlling of blood pressure information of controller module generation, and sends to controlling of blood pressure information the signal input part of the communication interface of sphygomanometer.
Compared with prior art, the present invention has the following advantages:
In prior art, electric sphygmomanometer comprises battery, mainboard and display screen, in order to realize, the electronic surveying of blood pressure to be needed plug-in or independently battery compartment is set, control circuit due to integrated sphygomanometer on mainboard, therefore the space that mainboard takies is large, battery and display screen have increased the volume of sphygomanometer simultaneously, cause the volume of electric sphygmomanometer larger, be not easy to very much carry, affected the convenience of using; Sphygomanometer provided by the invention arranges the input and output that communication interface carries out information, by communication interface, sphygomanometer is powered, by communication interface, information is sent on other display equipment, battery and display screen need to be set separately on sphygomanometer, meanwhile, sphygomanometer inside does not arrange control mainboard, has reduced the volume of sphygomanometer, be easy to carry, easy to use.
accompanying drawing explanation
Fig. 1 is the hardware block diagram of sphygomanometer of the present invention;
Fig. 2 is the inflation driving circuit structure figure of air pump system of the present invention;
Fig. 3 is the venting driving circuit structure figure of air pump system of the present invention;
Fig. 4 is the signal structure for amplifying block diagram of signal processor of the present invention;
Fig. 4 a is the signal amplification circuit structure chart of signal processor of the present invention;
Fig. 5 is the circuit structure diagram that signal synthesizer adopts adder;
Fig. 6 is the signal synthesizer circuit structure diagram of alternative analog switch of the present invention;
Fig. 7 is electric voltage frequency converter circuit structure diagram of the present invention;
Fig. 8 is that mobile terminal of the present invention is reduced into frequency signal the flow chart of voltage signal;
Fig. 9 is an embodiment integrated circuit structure chart of sphygomanometer of the present invention;
Figure 10 is that the workflow diagram that applied voltage test method is example is take in the present invention.
The specific embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Embodiment mono-
Shown in Figure 1, be the hardware structure diagram of a kind of sphygomanometer of the present invention.
As shown in Figure 1, a kind of sphygomanometer, comprising: cuff, air flue, pressure transducer, signal processor, voltage to frequency converter, air pump system and communication interface;
Described air flue is connected with cuff; The outfan of described air pump system connects air flue;
Described pressure transducer is arranged in cuff, and described pressure transducer detects the pulse pressure signal of static air pressure and pulse generation; The outfan of described pressure transducer connects the input of signal processor; The outfan of described signal processor connects voltage to frequency converter;
Described communication interface is comprised of signal input part, signal output part and earth terminal; The outfan of described voltage to frequency converter connects the signal output part of described communication interface; The signal input part of described communication interface connects the input of air pump system.
In the embodiment of the present invention, the signal input part of described communication interface and the frequency range of signal output part are 20 hertz to 20,000 hertz, described communication interface can be earphone interface, also can be USB interface or other communication interface corresponding with mobile terminal interface, and the present invention is not restricted the structure of communication interface.In the embodiment of the present invention, communication interface preferably adopts earphone interface, the mike end of described earphone interface is signal output part, this signal output part is output sound signal not only, also can export other sensor signal, and the present invention is not restricted the aspect of signal output part.Left passage input and the right passage input of earphone interface are signal input part.
In the embodiment of the present invention, in the cuff of sphygomanometer, be provided with pressure transducer, the blood pressure signal that pressure transducer detects is static pressure direct current signal and changes very slow pulse blood pressure signal, these intrasonic direct current signals are converted to after the AC signal in audiorange by voltage to frequency converter, by output signal, control static pressure and export mutually with the friendship of pulse blood pressure.By communication interface, send detection signal to mobile terminal, mobile terminal can be known the force value of corresponding pressure transducer by frequency analysis, transmits the control information of air pump system by communication interface, and air pump system is inflated and exitted.
In prior art, electric sphygmomanometer comprises battery, mainboard and display screen, in order to realize, the electronic surveying of blood pressure to be needed plug-in or independently battery compartment is set, control circuit due to integrated sphygomanometer on mainboard, therefore the space that mainboard takies is large, battery and display screen have increased the volume of sphygomanometer simultaneously, cause the volume of electric sphygmomanometer larger, be not easy to very much carry, affected the convenience of using; Sphygomanometer provided by the invention arranges the input and output that communication interface carries out information, by communication interface, sphygomanometer is powered, by communication interface, information is sent on other display equipment, display screen need to be set separately on sphygomanometer, meanwhile, sphygomanometer inside does not arrange control mainboard, has reduced the volume of sphygomanometer, be easy to carry, easy to use.
Embodiment bis-
The air pump system of sphygomanometer provided by the invention is controlled the inflation of air pump system and venting by inflation drive circuit and venting drive circuit.
Fig. 2 is the inflation driving circuit structure figure of air pump system of the present invention.
Shown in Figure 2, described inflation drive circuit is mainly comprised of air pump AP, resistance R 4, multiple tube Q2 and diode D2; The outfan of described resistance R 4 connects the base stage of multiple tube Q2, the colelctor electrode of described multiple tube Q2 connects the negative pole of air pump AP, the positive pole of described air pump AP is connected with power supply, described multiple tube Q2 emitter stage connects the positive pole of diode D2, the negative pole of described diode D2 is connected on the positive pole of air pump AP, described multiple tube Q2 grounded emitter; The left-channel signal input of described communication interface sends pwm control signal, by resistance R 4, controls multiple tube Q2 switch, thereby controls the inflation of air pump AP.
Fig. 3 is the venting driving circuit structure figure of air pump system of the present invention.
Shown in Figure 3, described venting drive circuit is mainly comprised of air escape cock K, resistance R 3, multiple tube Q1 and diode D1; The outfan of described resistance R 3 connects the base stage of multiple tube Q1, the colelctor electrode of described multiple tube Q1 connects one end of air escape cock K, the other end of described air escape cock K is connected with power supply, the emitter stage of described multiple tube Q1 connects the positive pole of diode D1, the negative pole of described diode D1 is connected on one end that air escape cock K is connected with power supply, described multiple tube Q1 grounded emitter, the right channel signal outfan of described communication interface sends pulse width modulation control signal (Pulse Width Modulation, PWM) and controls venting.
In the embodiment of the present invention, because adopting pwm signal to control air pump conventionally, sphygomanometer realizes boosting and blood pressure lowering in cuff, therefore the signal input part by communication interface produces pwm signal, this signal can be controlled inflation drive circuit and realize air-pump inflating, can also control venting drive circuit and realize air pump venting.
Further, described air pump system is recently controlled air pump by amplitude and the duty of the signal input part output signal of communication interface inflation and venting speed.
In the embodiment of the present invention, inflation and venting speed that described air pump system is recently controlled air pump by amplitude and the duty of communication interface signal input part output signal, specifically comprise:
The signal input part of described communication interface comprises left-channel signal input and right channel signal input;
Described air pump system is utilized the signal input part transmission audio signal of communication interface, and left or right passage produces the adjustable PWM square-wave signal of dutycycle, controls the speed of inflation;
Described air pump system is utilized the signal input part transmission audio signal of communication interface, and right or left passage can produce the adjustable PWM square-wave signal of dutycycle, controls the speed of venting.
In the embodiment of the present invention, utilize the signal input end of communication interface to transmit audio signal, left or right passage can produce the adjustable PWM square-wave signal of dutycycle, controls the speed of inflation.Left or right passage can directly be inputted the PWM square-wave signal in audiorange, the output of another one path no signal, this signal does not have direct current biasing, when pwm signal be on the occasion of time, control the multiple tube conducting of air pump, air pump work, when PWM is negative value, control the not conducting of multiple tube of air pump, air pump cuts out.If the dutycycle of pwm signal is 0.5 o'clock, be equivalent to have half the time air pump in work, and if the dutycycle of pwm signal is 0.25 o'clock, only be equivalent to have 25% time air pump in work, to be equivalent to dutycycle be half of 0.5 o'clock to aeration speed so, thereby by controlling duty, recently realize the aeration speed of air pump.
The embodiment of the present invention inflation meet the requirements of sleeve intrinsic pressure after, implement deflation course, utilize the signal input part transmission audio signal of communication interface, right or left passage can produce the adjustable PWM square-wave signal of dutycycle, controls the speed of venting.Right or left passage can directly be inputted the PWM square-wave signal in audiorange, the output of another one path no signal.This signal does not have direct current biasing, when pwm signal be on the occasion of time, control the multiple tube conducting of air escape cock, air escape cock is opened, and when PWM is negative value, controls the not conducting of multiple tube of air pump, air escape cock is closed.If the dutycycle of pwm signal is 0.5 o'clock, be equivalent to have half the time air escape cock in venting, and if the dutycycle of pwm signal is 0.25 o'clock, only be equivalent to have 25% time air escape cock in venting, it is half of 0.5 o'clock that venting speed is so equivalent to dutycycle, thereby realize by controlling duty, recently realizes venting speed.
Embodiment tri-
Fig. 4 is the signal structure for amplifying block diagram of signal processor of the present invention.
In sphygomanometer provided by the invention, described signal processor comprises:
Preamplifier, described preamplifier receives static pressure signal and the pulse pressure signal being detected by pressure transducer, static pressure signal and pulse pressure signal is carried out to integral body and amplify and export amplifying signal;
Band filter, the input of described band filter is connected with the outfan of described preamplifier, static pressure amplifying signal and the pulse pressure amplifying signal of separated described preamplifier output;
Pulse amplifier, the input of described pulse amplifier is connected with the outfan of described band filter, and described pulse amplifier is to again amplifying through the isolated pulse pressure amplifying signal of described band filter;
Signal synthesizer, the input of described signal synthesizer connect the output of described preamplifier static pressure amplifying signal end and the outfan of described pulse amplifier, described signal synthesizer synthesizes static pressure signal and pulse signal after amplifying, and the outfan of described signal synthesizer is connected to the input of described voltage to frequency converter.
In the embodiment of the present invention, the static pressure of blood pressure signal can directly be measured by pressure transducer, and pulse pressure is very faint, need through measuring again after gain, by preamplifier is set, blood pressure signal is amplified, according to algorithm, correspond to static pressure, obtain diastolic pressure and systolic pressure.Measurement can be carried out in process is boosted in inflation, also can in blood pressure lowering deflation course, carry out, and can be also the combination of two kinds of methods.
In the embodiment of the present invention, in blood pressure measurement process, pressure transducer is passed static pressure and two kinds of signals of pulse pressure in sleeve back simultaneously, and pulse pressure signal is very faint than static pressure, two kinds of signals need to be kept apart to amplification.Static pressure signal is close to direct current signal, AC signal within the scope of the about 0.5-3Hz of pulse pressure signal, in signal processing, can first add so a low pass filter as 40Hz, the interference of alternating current etc. is removed, then separated pulse exchanges and static pressure direct current signal, and stationary singnal directly obtains.AC signal is through the high pass filter of a 0.4Hz, then process amplification, the AC signal that just can obtain wanting.
Fig. 4 a is the signal amplification circuit structure chart of signal processor of the present invention.
Shown in Fig. 4 a, described preamplifier is mainly comprised of amplifier A1, resistance R 5, resistance R 6; One end of described resistance R 5 is the input of described preamplifier, the other end of described resistance R 5 is connected to the input of amplifier A1, the two ends of described resistance R 6 are connected with outfan with the input of amplifier A1 respectively, another input end grounding of described amplifier A1.
Described pulse amplifier is mainly comprised of amplifier A2, resistance R 7, resistance R 8; One end of described resistance R 7 is the input of described pulse amplifier, and the other end of described R7 connects amplifier A2, and the two ends of described resistance R 8 are connected with outfan with the input of amplifier A2 respectively, another input end grounding of described amplifier A2.
Fig. 5 is the circuit structure diagram that signal synthesizer adopts adder.
Shown in Figure 5, described adder is mainly comprised of amplifier A3, resistance R 9, resistance R 10 and resistance R 11; One end of described resistance R 9 is pulse amplifying signal input, one end of described resistance R 10 is static pressure amplifying signal input, the other end of described resistance R 9 is connected the input of amplifier A3 with the other end of resistance R 10, the two ends of described resistance R 11 are connected with outfan with the input of amplifier A3 respectively, another input end grounding of described A3.
In the embodiment of the present invention, because the signal input part of communication interface only has a road signal, so it is synthetic to carry out the signal of static pressure signal and pulse signal.Wherein a kind of signal synthesis method is directly that static pressure signal and pulse signal is synthetic through adder.By adopting meansigma methods to record static pressure signal, and pulse signal can be realized by measuring Dynamic Signal.
Embodiment tetra-
Fig. 6 is the signal synthesizer circuit structure diagram of alternative analog switch of the present invention.
Shown in Figure 6, for the signal synthesizer of sphygomanometer of the present invention adopts another embodiment of alternative analog switch, 1 end of described analog switch is static pressure amplifying signal input, 3 ends of described analog switch are pulse amplifying signal input, 2 end ground connection of described analog switch, 4 ends of described analog switch are analoging switch output end, 5 ends of described analog switch connect power supply, 6 ends of described analog switch are output control terminal, and the output signal of analoging switch output end is controlled.
In the embodiment of the present invention, utilize the control signal in venting (measuring during venting) or inflation (measuring during inflation) process to control alternative analog switch simultaneously, can make static pressure signal and pulse signal alternately enter mobile terminal, then at mobile terminal, obtain after signal, by the frequency of output signal, can static pressure signal be carried out separated with pulse pressure signal.
Embodiment five
Fig. 7 is electric voltage frequency converter circuit structure diagram of the present invention.
Shown in Figure 7, the voltage to frequency converter in sphygomanometer of the present invention is by being comprised of 555 elements, resistance R L, resistance R A, resistance R B, capacitor C 1, resistance R 1, resistance R 2, 5 ends of described 555 elements link with the outfan of signal synthesizer, 4 ends of described 555 elements are connected with power supply with 8 ends, parallel resistance RL between 3 ends of described 555 elements and 8 ends, the two ends of described resistance R A connect respectively 7 ends and 8 ends of described 555 elements, the two ends of described resistance R B connect respectively 6 ends and 7 ends of described 555 elements, 6 ends of described 555 elements and 2 ends are by capacitor C 1 ground connection, one end of 3 end contact resistance R1 of described 555 elements, the other end of described resistance R 1 is connected with the signal output part of communication interface, the other end of described resistance R 1 is by resistance R 2 ground connection.
In the embodiment of the present invention, the low frequency signal that described voltage to frequency converter detects pressure transducer is converted to AC signal output.
Sphygomanometer provided by the invention in use, cuff is inserted in to arm, the input of communication interface can be exported the square-wave signal of maximum 1.5V size, this signal can be controlled inflation drive circuit and realize air-pump inflating, in this process, pressure transducer detects static pressure size in sleeve, no longer pressurization after reaching 180mmHg.Software program can suitably be pressurized to than the about 20mmHg of systolic pressure last time according to the measurement result of last time, and without being pressurized to maximum, it is comfortable that user feels.The mobile terminal being connected with communication interface receives after the AC signal of voltage to frequency converter output, by frequency analysis, can know the force value of corresponding pressure transducer, mobile terminal can measure diastolic pressure and systolic pressure by algorithm again, thereby describe historical information and obtain blood pressure curve, or set warning value, realize warning function.
Embodiment six
Fig. 8 is that mobile terminal of the present invention is reduced into frequency signal the flow chart of voltage signal.
As shown in Figure 8, when frequency signal is converted into voltage signal, as long as mobile terminal software is FFT, process, find fundamental frequency signal, can obtain frequency, then can know magnitude of voltage according to tabling look-up.
Fig. 9 is an embodiment integrated circuit structure chart of sphygomanometer of the present invention.
As shown in Figure 9, A1 is that the integral body of pulse and pressure signal is amplified, A2 for only there being the amplifier of pulse signal after capacitance, A3 be pressure signal and amplify after pulse signal synthetic, then through 555 circuit, voltage signal is converted to frequency signal and sends into mobile terminal through earphone jack.Earphone passage left end sends pwm control signal, by resistance R 4, control multiple tube Q2 switch, thereby control the inflation of air pump, pressure transducer in cuff is converted into the signal of telecommunication pressure signal, send into resistance R 5, R5 and R6 and amplifier A1 have formed preamplifier, pressure signal is divided into two parts after preamplifier, C2, R7, R8 and A2 have formed pulse signal amplifying circuit, the effect of C2 is stable pressure signal isolation, only allow pulse signal enter, pulse signal is through amplifying, enter resistance R 9, after entering R10 with pressure signal, through A3, further amplify, R9, R10, R11 and A3 have formed the amplification after synthetic of pulse and pressure signal.Be pressurized to after certain pressure, no longer pressurization.During venting, signal enters 5 ends of 555 circuit after by A3, and the direct current that carries out the signal of telecommunication exchanges conversion, and 555 elements, RL, RA, RB, C1, R1, R2 have formed 555 Circuits System.Right channel audio signal is controlled venting by pwm signal, and signal is controlled multiple tube Q1 after entering R3, and Q1, D1 and air escape cock have formed venting circuit.
Figure 10 is that the workflow diagram that applied voltage test method is example is take in the present invention.
As shown in figure 10, when the sphygomanometer in the use embodiment of the present invention is measured, first by the signal input part output PWM ripple of communication interface, controlling ventilating control circuit inflates air pump system, by the pressure transducer in oversleeve, pulse signal is detected, when the pulse signal detecting is unchanged, proceed inflating pressure; When pulse signal being detected and change, constantly in pressurization, carrying out record, when detecting that pulse signal disappears or pulse signal no longer changes, by the signal input part of communication interface, pressure-releasing control circuit is controlled to air pump system and exit and show.
The signal that the present invention realizes pressure transducer by the signal output part of communication interface is exported, and utilizes voltage to frequency converter to realize pressure transducer direct current signal to the conversion of AC signal; Utilize inflation and the venting of the signal input part control air pump of communication interface.The method is simplified the communication process of electric sphygmomanometer and mobile terminal, the simple and convenient interactive communication of realizing electric sphygmomanometer and mobile terminal.
According to the sphygomanometer providing in above-mentioned embodiment, the embodiment of the present invention also provides the mobile terminal being connected with above-mentioned sphygomanometer.Described mobile terminal comprises:
Signal input module, the blood pressure signal of exporting for receiving the signal output part of the communication interface of sphygomanometer;
Controller module, for the blood pressure signal of signal input module transmission is carried out to analyzing and processing, and generates controlling of blood pressure information;
Signal output module, for receiving the controlling of blood pressure information of controller module generation, and sends to controlling of blood pressure information the signal input part of the communication interface of sphygomanometer.
Particularly, the signal input module of above-mentioned mobile terminal is connected with the signal output part of the communication interface of sphygomanometer, signal input module is sent to the blood pressure signal of the signal output part output of communication interface in controller module, by the analyzing and processing to blood pressure signal of controller module, generate controlling of blood pressure information, the signal input part that by signal output module, controlling of blood pressure information is sent to communication interface is controlled air pump system.
Each embodiment in this description all adopts the mode of going forward one by one to describe, and each embodiment stresses is the difference with other embodiment, between each embodiment identical similar part mutually referring to.
To a kind of sphygomanometer provided by the present invention, be described in detail above, applied specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof; , for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention meanwhile.
Claims (13)
1. a sphygomanometer, is characterized in that, comprising: cuff, air flue, pressure transducer, signal processor, voltage to frequency converter, air pump system and communication interface;
Described air flue is connected with cuff; The outfan of described air pump system connects air flue;
Described pressure transducer is arranged in cuff, and described pressure transducer detects the pulse pressure signal of static air pressure and pulse generation; The outfan of described pressure transducer connects the input of signal processor; The outfan of described signal processor connects the input of voltage to frequency converter;
Described communication interface is comprised of signal input part, signal output part and earth terminal; The outfan of described voltage to frequency converter connects the signal output part of described communication interface; The signal input part of described communication interface connects the input of air pump system.
2. sphygomanometer according to claim 1, is characterized in that, the signal input part of described communication interface is by inflating and the drive circuit of exitting is controlled the inflation of air pump system and venting.
3. sphygomanometer according to claim 2, is characterized in that, described inflation drive circuit is mainly comprised of air pump (AP), resistance (R4), multiple tube (Q2) and diode (D2);
The outfan of described resistance (R4) connects the base stage of multiple tube (Q2), the colelctor electrode of described multiple tube (Q2) connects the negative pole of air pump (AP), the positive pole of described air pump (AP) is connected with power supply, described multiple tube (Q2) emitter stage connects the positive pole of diode (D2), the negative pole of described diode (D2) is connected on the positive pole of air pump (AP), described multiple tube (Q2) grounded emitter; The signal input part of described communication interface sends pwm control signal, by resistance (R4), controls multiple tube (Q2) switch, thereby controls the inflation of air pump (AP).
4. sphygomanometer according to claim 2, is characterized in that, described venting drive circuit is mainly comprised of air escape cock (K), resistance (R3), multiple tube (Q1) and diode (D1);
The outfan of described resistance (R3) connects the base stage of multiple tube (Q1), the colelctor electrode of described multiple tube (Q1) connects one end of air escape cock (K), the other end of described air escape cock (K) is connected with power supply, the emitter stage of described multiple tube (Q1) connects the positive pole of diode (D1), the negative pole of described diode (D1) is connected on one end that air escape cock (K) is connected with power supply, described multiple tube (Q1) grounded emitter, the signal input part of described communication interface sends pwm control signal and controls venting.
5. sphygomanometer according to claim 2, is characterized in that, inflation and venting speed that described air pump system is recently controlled air pump by amplitude and the duty of the signal input part output signal of communication interface.
6. sphygomanometer according to claim 5, is characterized in that, inflation and venting speed that described air pump system is recently controlled air pump by amplitude and the duty of the signal input part output signal of communication interface, specifically comprise:
The signal input part of described communication interface comprises left-channel signal input and right channel signal input;
Described air pump system is utilized the signal input part input audio signal of communication interface, and left or right passage produces the adjustable PWM square-wave signal of dutycycle, controls the speed of inflation;
Described air pump system is utilized the signal input part input audio signal of communication interface, and right or left passage can produce the adjustable PWM square-wave signal of dutycycle, controls the speed of venting.
7. sphygomanometer according to claim 1, is characterized in that, described voltage to frequency converter is comprised of 555 elements, resistance (RL), resistance (RA), resistance (RB), electric capacity (C1), resistance (R1), resistance (R2);
5 ends of described 555 elements link with the outfan of signal synthesizer, 4 ends of described 555 elements are connected with power supply with 8 ends, parallel resistance (RL) between 3 ends of described 555 elements and 8 ends, the two ends of described resistance (RA) connect respectively 7 ends and 8 ends of described 555 elements, the two ends of described resistance (RB) connect respectively 6 ends and 7 ends of described 555 elements, 6 ends of described 555 elements and 2 ends are by electric capacity (C1) ground connection, one end of 3 end contact resistances (R1) of described 555 elements, the other end of described resistance (R1) is connected with the signal input part of communication interface, the other end of described resistance (R1) is by resistance (R2) ground connection.
8. sphygomanometer according to claim 1, is characterized in that, described signal processor comprises:
Preamplifier, described preamplifier receives static pressure signal and the pulse pressure signal being detected by pressure transducer, static pressure signal and pulse pressure signal is carried out to integral body and amplify and export amplifying signal;
Band filter, the input of described band filter is connected with the outfan of described preamplifier, static pressure amplifying signal and the pulse pressure amplifying signal of separated described preamplifier output;
Pulse amplifier, the input of described pulse amplifier is connected with the outfan of described band filter, and described pulse amplifier is to again amplifying through the isolated pulse pressure amplifying signal of described band filter;
Signal synthesizer, the input of described signal synthesizer connect the output of described preamplifier static pressure amplifying signal end and the outfan of described pulse amplifier, described signal synthesizer synthesizes static pressure signal and pulse signal after amplifying, and the outfan of described signal synthesizer is connected to the input of described voltage to frequency converter.
9. sphygomanometer according to claim 8, is characterized in that, described preamplifier is mainly comprised of amplifier (A1), resistance (R5), resistance (R6);
The input that one end of described resistance (R5) is described preamplifier, the other end of described resistance (R5) is connected to the input of amplifier (A1), the two ends of described resistance (R6) are connected with outfan with the input of amplifier (A1) respectively, another input end grounding of described amplifier (A1).
10. sphygomanometer according to claim 8, is characterized in that, described pulse amplifier is mainly comprised of amplifier (A2), resistance (R7), resistance (R8);
The input that one end of described resistance (R7) is described pulse amplifier, the other end of described (R7) connects amplifier (A2), the two ends of described resistance (R8) are connected with outfan with the input of amplifier (A2) respectively, another input end grounding of described amplifier (A2).
11. sphygomanometers according to claim 8, is characterized in that, described signal synthesizer is adder, and described adder is mainly comprised of amplifier (A3), resistance (R9), resistance (R10) and resistance (R11);
One end of described resistance (R9) is pulse amplifying signal input, one end of described resistance (R10) is static pressure amplifying signal input, the other end of described resistance (R9) is connected the input of amplifier (A3) with the other end of resistance (R10), the two ends of described resistance (R11) are connected with outfan with the input of amplifier (A3) respectively, another input end grounding of described amplifier (A3).
12. sphygomanometers according to claim 8, it is characterized in that, described signal synthesizer is alternative analog switch, 1 end of described analog switch is static pressure amplifying signal input, and 3 ends of described analog switch are pulse amplifying signal input, 2 end ground connection of described analog switch, 4 ends of described analog switch are analoging switch output end, 5 ends of described analog switch connect power supply, and 6 ends of described analog switch are output control terminal, and the output signal of analoging switch output end is controlled.
13. 1 kinds of mobile terminals, is characterized in that, comprising:
Signal input module, the blood pressure signal of exporting for receiving the signal output part of the communication interface of sphygomanometer;
Controller module, for the blood pressure signal of signal input module transmission is carried out to analyzing and processing, and generates controlling of blood pressure information;
Signal output module, for receiving the controlling of blood pressure information of controller module generation, and sends to controlling of blood pressure information the signal input part of the communication interface of sphygomanometer.
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| CN201410004675.3A CN103690154B (en) | 2014-01-06 | 2014-01-06 | A kind of sphygmomanometer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104188643A (en) * | 2014-09-17 | 2014-12-10 | 上海工程技术大学 | Pressure control circuit and control method for blood pressure measurement |
| 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 |
| CN108626158A (en) * | 2018-04-18 | 2018-10-09 | 苏州星始户外体育用品有限公司 | A kind of electric air pump control method and system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN203861207U (en) * | 2014-01-06 | 2014-10-08 | 山东共达电声股份有限公司 | Sphygmomanometer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3423067B2 (en) * | 1994-05-23 | 2003-07-07 | 日本コーリン株式会社 | Linear pressure rise type blood pressure measurement device |
| 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 |
| CN1197521C (en) * | 2002-12-26 | 2005-04-20 | 天津市先石光学技术有限公司 | Wrist type electric sphygmomanometer, and its application method |
| CN103251397A (en) * | 2012-02-17 | 2013-08-21 | 钱军 | Portable blood pressure measuring system and manufacture method thereof |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN203861207U (en) * | 2014-01-06 | 2014-10-08 | 山东共达电声股份有限公司 | Sphygmomanometer |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104188643A (en) * | 2014-09-17 | 2014-12-10 | 上海工程技术大学 | Pressure control circuit and control method for blood pressure measurement |
| CN104188643B (en) * | 2014-09-17 | 2016-08-24 | 上海工程技术大学 | A kind of pressure control circuit for blood pressure measurement and control method |
| 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 |
| CN108626158A (en) * | 2018-04-18 | 2018-10-09 | 苏州星始户外体育用品有限公司 | A kind of electric air pump control method and system |
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| CN103690154B (en) | 2016-05-25 |
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