CN104000567B - Portable multipoint pulse wireless monitoring system - Google Patents
Portable multipoint pulse wireless monitoring system Download PDFInfo
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- CN104000567B CN104000567B CN201410265411.3A CN201410265411A CN104000567B CN 104000567 B CN104000567 B CN 104000567B CN 201410265411 A CN201410265411 A CN 201410265411A CN 104000567 B CN104000567 B CN 104000567B
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Abstract
The invention discloses a portable multipoint pulse wireless monitoring system which comprises a pulse collecting unit, a signal processing and power supply unit and a data communication unit. The pulse collecting unit is provided with a piezoelectric film sensor and used for collecting human body pulse signals. The signal processing and power supply unit is used for conducting amplification, filtering and analog-digital conversion on the signals collected through the pulse collecting unit and supplying power to each module through a power supply unit. The data communication unit is used for wirelessly transmitting processed pulse information through Bluetooth and displaying the information on a mobile client side. According to the system, the human body pulse can be monitored at multiple points, monitoring data can be communicated through Bluetooth wireless transmission, a measuring result is accurate, the size is small, the system is convenient to carry and easy and convenient to operate, and a user can conveniently and rapidly know the health condition of the user on the premise that work, study and exercise are not affected.
Description
Technical field
The invention belongs to monitoring of pulse technical field in electronic medical equipment, particularly relate to a kind of to be easy to carry, can the multiple spot monitoring of pulse system of Bluetooth wireless communication.
Background technology
The vital sign that pulse is wanted as body weight for humans, can reflect the situation of beating of heart.The pulse wave of varying strength, speed and the rhythm and pace of moving things can show the integrated information in terms of the health status such as the physiology of a people, the mental status and muscle power level.The human body physiological state information that pulse wave shows, can detect as the auxiliary of other Medical Instruments, provide diagnosis reference for doctor, the health status etc. of display individual self.
At present, existing monitoring of pulse system is deposited and pulse can only be carried out single-point monitoring in use, and interference signal is relatively big, the easy distortion of measurement result, and equipment volume carries more greatly inconvenience, data can only by wired be transmitted showing and can not the problem such as long-distance wireless monitoring.Additionally, most of monitoring of pulse systems, there is also operation complexity, be only suitable for the problems such as professional's use.
Summary of the invention
The present invention solves that the measurement result that existing monitoring of pulse system generally exists is inaccurate, equipment volume carries more greatly inconvenience, data can not be wirelessly transferred, operate the problems such as complexity, there is provided one to be easy to carry, measure accurately, can the multiple spot monitoring of pulse system of Bluetooth wireless communication.
In order to solve the problems referred to above, the technical solution used in the present invention is:
A kind of portable multiple spot pulse wireless monitor system, uses mancarried device to install unit, is provided with pulse collection unit, signal processing and power supply unit and data communication units in mancarried device；It is characterized in that:
Described pulse collection unit is used for gathering human pulse signal；
Signal processing and power supply unit are amplified filtering and analog-to-digital conversion process for the signal carrying out pulse collection unit collection, and utilize power supply unit to be powered each module；
Data communication units is for carrying out Bluetooth wireless transmission to the pulse information after processing, and shows in mobile client,
Described pulse collection unit includes that three piezoelectric film sensors, described three piezoelectric film sensors are arranged on mancarried device lower surface, and three piezoelectric film sensors are symmetrically placed in equilateral triangle centered by the axis of mancarried device lower surface.
Aforesaid one portable multiple spot pulse wireless monitor system, it is characterized in that: described signal processing and power supply unit are amplified filtration module by signal, ADC, control module, power module form, the signal that piezoelectric film sensor gathers amplifies filtration module through described signal and is connected with the external interrupt mouth of control module with ADC, and described signal amplifies filtration module, control module is all connected with power module.
Aforesaid one portable multiple spot pulse wireless monitor system, it is characterized in that: described data communication units mainly includes bluetooth communication and mobile client, described bluetooth communication is connected with power module with the serial ports of control module, and described mobile client is to be provided with mobile phone or the other-end equipment of function of Bluetooth communication.
Aforesaid one portable multiple spot pulse wireless monitor system, it is characterised in that: described three piezoelectric film sensors share an ADC and control module.
Aforesaid one portable multiple spot pulse wireless monitor system, it is characterised in that: described mancarried device is cube shaped casing, and material uses food grade silicone.
Aforesaid one portable multiple spot pulse wireless monitor system, it is characterised in that: described piezoelectric film sensor is generally circular in shape, and material uses pvdf membrane.
Aforesaid one portable multiple spot pulse wireless monitor system, it is characterized in that: described signal processing unit is arranged on the middle part of mancarried device, power supply unit is arranged on the top of device, and described bluetooth communication is positioned at a side position of mancarried device supplying power at top module.
Aforesaid one portable multiple spot pulse wireless monitor system, it is characterized in that: described signal amplifies filtration module and includes signal amplification circuit and filter circuit, it is possible to disturb the power frequency interference signals of signal and 50Hz to suppress spatial electromagnetic interference signal, body temperature generation.
Aforesaid one portable multiple spot pulse wireless monitor system, it is characterized in that: described signal amplification circuit uses the low noise amplifier circuit being amplified driving late-class circuit to work to weak current, including integrated operational amplifier U1A, U1B, U1C, resistance R1, R2, R3, R4, R5, R6, electric capacity C1, C2 forms, described integrated operational amplifier uses the four-operational amplifier LM324 with differential input, wherein resistance R1, one common port of electric capacity C1 and the inverting input of integrated operational amplifier U1A, one outfan of piezoelectric film sensor is connected, another common port is through the inverting input of resistance R4 Yu integrated operational amplifier U1C, resistance R5 is connected；The other end of resistance R5 is connected with the outfan of integrated operational amplifier U1C；Resistance R2, a common port of electric capacity C2 are connected with another outfan, the inverting input of integrated operational amplifier U1B of piezoelectric film sensor, and another common port is connected through the in-phase input end of resistance R3 with integrated operational amplifier U1C；One end of resistance R6 is connected with the in-phase input end of integrated operational amplifier U1C, other end ground connection；The in-phase input end of integrated operational amplifier U1A is connected with the in-phase input end of integrated operational amplifier U1B and ground connection.
Aforesaid one portable multiple spot pulse wireless monitor system, it is characterized in that: described filter circuit includes low pass filter and band elimination filter, low pass filter is by integrated operational amplifier U2A, resistance R7, R8, R9, R10, electric capacity C3, C4 form, the inverting input of resistance R10 one end U2A is connected, other end ground connection；R9 one end is connected with the inverting input of U2A, and the other end is connected with U2A outfan；Electric capacity C4 one end is connected with the in-phase input end of U2A, one end ground connection；Electric capacity C3 one end is connected with the outfan of U2A, and one end is connected between R7 and R8；Electric capacity C5, C6 and resistance R11, R13 are in parallel, are connected with the inverting input of U2B by the outfan of U2A；The outfan of U2B is connected with in-phase input end；The outfan of U2B is connected by R14 with the in-phase input end of U2C；The in-phase input end of U2C passes through R15 ground connection；The outfan of U2C connects between R11, R13 by C7, is connected between C5, C6 by resistance R12；The inverting input of U2C is connected with its outfan, the outfan of signal amplification circuit is connected to the positive input of integrated operational amplifier U2A by resistance R8, R7, integrated operational amplifier U2B is used as amplifier, and its outfan is as the output of filter circuit, and U2C is connected into the form of voltage follower.
The beneficial effect that the present invention is reached: the portable multiple spot pulse wireless monitor system of the present invention can accurately measure pulse wave, and data can be passed through bluetooth, it is wirelessly transmitted in the mobile clients such as mobile phone, equipment volume is little, be easy to carry, operate simpler, user can understand the health status of self on the premise of not affecting work, learning and move conveniently and efficiently.
Accompanying drawing explanation
Fig. 1 is the system block diagram of the portable multiple spot pulse wireless monitor system of the present invention.
Fig. 2 is the mancarried device structural representation equipped with piezoelectric film sensor of the present invention.
Fig. 3 is signal processing and the signal amplification circuit figure of power supply unit of the present invention.
Fig. 4 is signal processing and the signal filter circuit figure of power supply unit of the present invention.
Fig. 5 is the circuit diagram of the bluetooth communication of the data communication units of the present invention.
Reference implication is as follows:
1_1,1_2,1_3: piezoelectric film sensor；2: bottom of device surface；3: device middle part is used for installing signal processing unit；4: device top is used for installing supply module；5: device top side is used for installing bluetooth communication.
Detailed description of the invention
The invention will be further described below in conjunction with the accompanying drawings.Following example are only used for clearly illustrating technical scheme, and can not limit the scope of the invention with this.
As it is shown in figure 1, the portable multiple spot pulse wireless monitor system of the present invention, use mancarried device that unit is installed, in mancarried device, be provided with pulse collection unit, signal processing and power supply unit and three parts of data communication units；Pulse collection unit is mainly made up of piezoelectric film sensor；Signal processing and power supply unit are mainly amplified filtration module by signal, ADC, control module, power module form, the signal that piezoelectric film sensor gathers amplifies filtration module through signal and is connected with the external interrupt mouth of control module with ADC, and signal amplifies filtration module, control module is all connected with power module；Data communication units is mainly made up of bluetooth communication and mobile client, and bluetooth communication is connected with serial ports and the power module of control module, and mobile client is to be provided with mobile phone or the other-end equipment of function of Bluetooth communication.
As in figure 2 it is shown, the global shape of mancarried device is cube shaped casing, material is food grade silicone, and height is within 3 centimetres, it is ensured that after people contacts with device, human body skin will not be produced harmful effect.Mancarried device includes three piezoelectric film sensor 1_1 being arranged on bottom of device surface 2, piezoelectric film sensor 1_2, piezoelectric film sensor 1_3, for installing the device middle part 3 of signal processing unit, for installing the device top 4 of power supply unit, for installing the device top side 5 of bluetooth communication.
Piezoelectric film sensor 1_1 of the present invention, piezoelectric film sensor 1_2, piezoelectric film sensor 1_3's is generally circular in shape, and material is pvdf membrane.In order to improve the representativeness of gathered data, reducing the impact that individual data error is brought, these three piezoelectric film sensor is symmetrically placed in equilateral triangle centered by the axis on bottom of device surface 2.The piezoelectric membrane piezoelectric constant using PVDF material is big, and variable force response sensitivity height is the highest in all piezoelectrics.It will not be depolarized in the alternating electric field of high frequency, and unit volume can obtain bigger output.And PVDF piezoelectric membrane is frivolous pliable and tough, Qm is low, has broadband character, good with the stickiness of human body skin, so that pulse signal is more easy to transmission, the distortion factor reduces.Piezoelectric film sensor the most of the present invention, is fabricated to circle so that in the case of same girth, sensor area is maximum, and signal is more easy to transmission；On the other hand owing to differing the passages through which vital energy circulates position of measured human body, three piezoelectric film sensors of this device are symmetrically placed in equilateral triangle centered by the axis on bottom of device surface 2, make one side that each two piezoelectric transducer is triangle, so that measured place is equivalent at least two sensors is measuring signal, three etc. are put, it is possible that only one of which sensor is in situation about measuring compared to the discharge of other placement forms such as one.So the modes of emplacement of the present invention, can this problem of relatively effective solution so that measurement result is more accurate.
Signal of the present invention amplifies filtration module and includes signal amplification circuit and filter circuit, it is possible to disturb the power frequency interference signals of signal and 50Hz to suppress spatial electromagnetic interference signal, body temperature generation.
Signal processing of the present invention and the signal amplification circuit of power supply unit, as it is shown on figure 3, signal amplification circuit is a kind of low noise amplifier circuit being amplified weak current and driving late-class circuit to work.Including: piezoelectric film sensor, integrated operational amplifier U1A, U1B, U1C, resistance R1, R2, R3, R4, R5, R6, electric capacity C1, C2 composition, integrated operational amplifier can use the four-operational amplifier LM324 with differential input.Wherein resistance R1, a common port of electric capacity C1 are connected with the inverting input of integrated operational amplifier U1A, an outfan of sensor, and another common port is connected through inverting input, the resistance R5 of resistance R4 and integrated operational amplifier U1C；The other end of resistance R5 is connected with the outfan of integrated operational amplifier U1C；Resistance R2, a common port of electric capacity C2 are connected with another outfan, the inverting input of integrated operational amplifier U1B of sensor, and another common port is connected through the in-phase input end of resistance R3 with integrated operational amplifier U1C；One end of resistance R6 is connected with the in-phase input end of integrated operational amplifier U1C, other end ground connection；The in-phase input end of integrated operational amplifier U1A is connected with the in-phase input end of integrated operational amplifier U1B and ground connection.Resistance R1 Yu R2 is equivalent, R3 Yu R4 is equivalent, R5 Yu R6 is equivalent, and electric capacity C1 Yu C2 is equivalent.
The time constant of signal amplification circuit, the lower-cut-off frequency that circuit controls is:.Frequency in view of human pulse ripple is about 0.5-2Hz, in order to effectively gather the signal of pulse wave, it is necessary to lower-cut-off frequency is set to 0.50.1Hz.Thus can effectively suppress the interference signal less than 0.5Hz, the interference produced such as human body shake and thermal noise interference etc..
The signal processing of the present invention and the filter circuit of power supply unit, as shown in Figure 4, including low pass filter and band elimination filter.Low pass filter is made up of integrated operational amplifier U2A, resistance R7, R8, R9, R10, electric capacity C3, C4.Band elimination filter is made up of integrated operational amplifier U2B, U2C, resistance R11, R12, R13, R14, R15, electric capacity C5, C6, C7.The inverting input of resistance R10 one end U2A is connected, other end ground connection；R9 one end is connected with the inverting input of U2A, and the other end is connected with U2A outfan；Electric capacity C4 one end is connected with the in-phase input end of U2A, one end ground connection；Electric capacity C3 one end is connected with the outfan of U2A, and one end is connected between R7 and R8；Electric capacity C5, C6 and resistance R11, R13 are in parallel, are connected with the inverting input of U2B by the outfan of U2A；The outfan of U2B is connected with in-phase input end；The outfan of U2B is connected by R14 with the in-phase input end of U2C；The in-phase input end of U2C passes through R15 ground connection；The outfan of U2C connects between R11, R13 by C7, is connected between C5, C6 by resistance R12；The inverting input of U2C is connected with its outfan.The outfan of said amplifier circuitry is connected to the positive input of integrated operational amplifier U2A by resistance R8, R7, and integrated operational amplifier U2B is used as amplifier, and its outfan is as the output of filter circuit, and U2C is connected into the form of voltage follower.
Low pass filter of the present invention, it is allowed to low frequency or DC component in signal are passed through, suppresses high fdrequency component, and the low pass filter that the present invention uses is second order voltage-controlled type low pass filter, it is possible to make filtering characteristic more precipitous, improves filter effect.Band elimination filter of the present invention, it can be in the case of the signal ensureing other frequencies lose, a certain frequency information in effective suppression input signal.This band elimination filter has good selecting frequency characteristic and the highest quality factor.Integrated operational amplifier U2B is used as amplifier, and its outfan is as the output of filter circuit, and U2C is connected into the form of voltage follower.Be not powered on press follower band elimination filter only from mid frequency farther out time can be only achieved preferable attenuation characteristic, therefore the quality factor of wave filter are the highest, after adding voltage follower, quality factor are improved, so that the filter effect of wave filter is more preferable, measurement result is the most accurate.
The power module of signal processing and power supply unit can be realized by lithium battery, aneroid battery or button cell.Control module can use the product of STC Corporation's STC12C5A60S2 model to realize, it is internally integrated multi-channel A/D C functional module, there is the function that multi-channel analog signal gathers, bluetooth communication can use A T K-H C 05 principal and subordinate one bluetooth serial ports module as shown in Figure 5, realize, but be not limited to this.
The work process of the present invention portable multiple spot pulse wireless monitor system is as follows: user uses the portable multiple spot pulse wireless monitor system of the present invention, makes piezoelectric film sensor be close at wristing arteries and veins, turns on the power rear system and bring into operation.Three piezoelectric film sensors can more accurately sense beat pulse, passes to control module after filtering and amplifying circuit and AD analog to digital conversion circuit process, and control module calculates the related data of pulse wave.Controlled the wireless connections of bluetooth equipment and mobile client by control module simultaneously.Once set up connection, mobile client can show the relevant information of the pulse waves such as user's pulse intensity, speed in real time according to the data of bluetooth equipment transmission, allow user can understand the health status of self conveniently and efficiently on the premise of not affecting work, learning and move.
The portable multiple spot pulse wireless monitor system that the present invention relates to, accurately measures pulse wave by the piezoelectric film sensor of three diverse locations, utilizes bluetooth module and mobile client to set up wireless connections, facilitate being wirelessly transferred of data, simple to operate, device volume is little, it is easy to carry.
The ultimate principle of the present invention, principal character and advantage have more than been shown and described.Skilled person will appreciate that of the industry; the present invention is not restricted to the described embodiments; the principle that the present invention is simply described described in above-described embodiment and description; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements both fall within scope of the claimed invention.Claimed scope is defined by appending claims and equivalent thereof.
Claims (1)
1. a portable multiple spot pulse wireless monitor system, uses mancarried device to install unit, is provided with pulse collection unit, signal processing and power supply unit and data communication units in mancarried device, it is characterised in that:
Described pulse collection unit is used for gathering human pulse signal, described pulse collection unit includes three piezoelectric film sensors, described three piezoelectric film sensors are arranged on mancarried device lower surface, and three piezoelectric film sensors are symmetrically placed in equilateral triangle centered by the axis of mancarried device lower surface；
Described signal processing and power supply unit are amplified filtration module by signal, ADC, control module, power module form, the signal that piezoelectric film sensor gathers amplifies filtration module through signal and is connected with the external interrupt mouth of control module with ADC, signal amplifies filtration module, control module is all connected with power module, signal processing and power supply unit are amplified filtering and analog-to-digital conversion process for the signal carrying out pulse collection unit collection, are powered each module；
Described data communication units includes bluetooth communication and mobile client, described bluetooth communication is connected with power module by the serial ports of control module, described mobile client is to be provided with mobile phone or the other-end equipment of function of Bluetooth communication, data communication units is for carrying out Bluetooth wireless transmission to the pulse information after processing, and show in mobile client
Described three piezoelectric film sensors share described ADC and control module, described mancarried device is cube shaped casing, material uses food grade silicone, described piezoelectric film sensor is generally circular in shape, material uses pvdf membrane, described signal processing and power supply unit are arranged on the middle part of mancarried device, signal processing and power supply unit are arranged on the top of device, described bluetooth communication is positioned at mancarried device top signal and processes and a side position of power supply unit, described signal amplifies filtration module and includes signal amplification circuit and filter circuit, spatial electromagnetic can be disturbed signal, interference signal and the power frequency interference signals of 50Hz that body temperature produces suppress；
Described signal amplification circuit uses the low noise amplifier circuit being amplified driving late-class circuit to work to weak current, including integrated operational amplifier U1A, U1B, U1C, resistance R1, R2, R3, R4, R5, R6, electric capacity C1, C2, described integrated operational amplifier uses the four-operational amplifier LM324 with differential input, wherein resistance R1, one common port of electric capacity C1 and the inverting input of integrated operational amplifier U1A, one outfan of piezoelectric film sensor is connected, another common port is through the inverting input of resistance R4 Yu integrated operational amplifier U1C, resistance R5 is connected；The other end of resistance R5 is connected with the outfan of integrated operational amplifier U1C；Resistance R2, a common port of electric capacity C2 are connected with another outfan, the inverting input of integrated operational amplifier U1B of piezoelectric film sensor, and another common port is connected through the in-phase input end of resistance R3 with integrated operational amplifier U1C；One end of resistance R6 is connected with the in-phase input end of integrated operational amplifier U1C, other end ground connection；The in-phase input end of integrated operational amplifier U1A is connected with the in-phase input end of integrated operational amplifier U1B and ground connection；
Described filter circuit includes low pass filter and band elimination filter, low pass filter is by integrated operational amplifier U2A, resistance R7, R8, R9, R10, electric capacity C3, C4 form, band elimination filter is made up of integrated operational amplifier U2B, U2C, resistance R11, R12, R13, R14, R15, electric capacity C5, C6, C7, resistance R10 one end is connected with the inverting input of U2A, other end ground connection；R9 one end is connected with the inverting input of U2A, and the other end is connected with the outfan of U2A；Electric capacity C4 one end is connected with the in-phase input end of U2A, one end ground connection；Electric capacity C3 one end is connected with the outfan of U2A, and one end is connected between R7 and R8；Electric capacity C5, C6 and resistance R11, R13 are in parallel, are connected with the inverting input of U2B by the outfan of U2A；The outfan of U2B is connected with the in-phase input end of U2B；The outfan of U2B is connected by R14 with the in-phase input end of U2C；The in-phase input end of U2C passes through R15 ground connection；The outfan of U2C connects between R11, R13 by C7, is connected between C5, C6 by resistance R12；The inverting input of U2C is connected with its outfan, the outfan of signal amplification circuit is connected to the in-phase input end of integrated operational amplifier U2A by resistance R8, R7, integrated operational amplifier U2B is used as amplifier, and its outfan is as the output of filter circuit, and U2C is connected into the form of voltage follower.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410265411.3A CN104000567B (en) | 2014-06-13 | 2014-06-13 | Portable multipoint pulse wireless monitoring system |
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| CN201410265411.3A CN104000567B (en) | 2014-06-13 | 2014-06-13 | Portable multipoint pulse wireless monitoring system |
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| CN104000567B true CN104000567B (en) | 2017-01-11 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106859613A (en) * | 2017-02-27 | 2017-06-20 | 广西科技大学鹿山学院 | A kind of long-range pulses measure terminal and its measuring method |
| CN107088056A (en) * | 2017-04-28 | 2017-08-25 | 成都华信高科医疗器械有限责任公司 | A kind of vital sign sensors and telecommunication network sign system based on PVDF |
| CN109645967B (en) * | 2019-01-28 | 2021-04-30 | 杭州电子科技大学 | Long-term and position self-checking pulse detector and pulse detection method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6984207B1 (en) * | 1999-09-14 | 2006-01-10 | Hoana Medical, Inc. | Passive physiological monitoring (P2M) system |
| US7539533B2 (en) * | 2006-05-16 | 2009-05-26 | Bao Tran | Mesh network monitoring appliance |
| CN101474067B (en) * | 2008-12-26 | 2011-12-14 | 东南大学 | PVDF array tactile sensor for measuring pulse |
| CN201453258U (en) * | 2009-04-27 | 2010-05-12 | 洪小鹏 | Mobile terminal device for detection of human physiological information |
| CN201879670U (en) * | 2010-11-10 | 2011-06-29 | 南京信息工程大学 | Pulse signal detector based on Bluetooth |
| CN202198582U (en) * | 2011-07-11 | 2012-04-25 | 卢超 | Novel wireless pulse measuring instrument |
| CN102334981B (en) * | 2011-07-23 | 2013-11-27 | 浙江大学 | Multiplex humpulse wave signal acquisition system |
| CN203483407U (en) * | 2013-10-12 | 2014-03-19 | 合肥师范学院 | Simple pulse measurement instrument |
| CN103654741A (en) * | 2013-11-06 | 2014-03-26 | 成都佳锂科技有限公司 | Bluetooth pulse wave detector |
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