CN104000567A - Portable multipoint pulse wireless monitoring system - Google Patents
Portable multipoint pulse wireless monitoring system Download PDFInfo
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- CN104000567A CN104000567A CN201410265411.3A CN201410265411A CN104000567A CN 104000567 A CN104000567 A CN 104000567A CN 201410265411 A CN201410265411 A CN 201410265411A CN 104000567 A CN104000567 A CN 104000567A
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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, relate in particular to the multiple spot monitoring of pulse system being a kind ofly easy to carry, can 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 of the health status aspects such as a people's physiology, the mental status and physical level.The human body physiological state information that pulse wave shows, can be used as the auxiliary detection of other Medical Instruments, for doctor provides diagnosis reference, shows individual's self health status etc.
At present, existing monitoring of pulse system is deposited in use can only carry out single-point monitoring to pulse, and interfering signal is larger, the easy distortion of measurement result, equipment volume is carried more greatly inconvenience, data can only by wired transmit show and can not long-distance wireless monitoring etc. problem.In addition,, also there is complicated operation in most of monitoring of pulse systems, is only suitable for the problems such as professional's use.
Summary of the invention
The invention solves that the ubiquitous measurement result of existing monitoring of pulse system is inaccurate, equipment volume is carried more greatly inconvenience, the problem such as data can not wireless transmission, complicated operation, provide one to be easy to carry, to measure accurately, multiple spot monitoring of pulse system that can Bluetooth wireless communication.
In order to address the above problem, the technical solution used in the present invention is:
A kind of portable multiple spot pulse wireless monitor system, adopts mancarried device that unit is installed, and 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 carry out amplification filtering and analog-to-digital conversion process for the signal that the collection of pulse collection unit is come, and utilize power supply unit to power to each module;
Data communication units is used for pulse information after treatment to carry out Bluetooth wireless transmission, and is presented in mobile client,
Described pulse collection unit comprises three piezoelectric film sensors, and described three piezoelectric film sensors are arranged on mancarried device lower surface, and three piezoelectric film sensors are centered by the axis on portable bottom of device surface, and equilateral triangle is symmetrical to be placed.
The portable multiple spot pulse of aforesaid one wireless monitor system, it is characterized in that: described signal processing and power supply unit are made up of signal amplification filtering module, ADC module, control module, power module, the signal that piezoelectric film sensor gathers is connected with the external interrupt mouth of control module with ADC module through described signal amplification filtering module, and described signal amplification filtering module, control module are all connected with power module.
The portable multiple spot pulse of aforesaid one wireless monitor system, it is characterized in that: described data communication units mainly comprises 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 mobile phone or the other-end equipment that function of Bluetooth communication is installed.
The portable multiple spot pulse of aforesaid one wireless monitor system, is characterized in that: described three piezoelectric film sensors share an ADC module and control module.
The portable multiple spot pulse of aforesaid one wireless monitor system, is characterized in that: described mancarried device is cube shaped casing, and material adopts food stage silica gel.
The portable multiple spot pulse of aforesaid one wireless monitor system, is characterized in that: described piezoelectric film sensor is shaped as circle, and material adopts pvdf membrane.
The portable multiple spot pulse of aforesaid one 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 capable of supplying power at top module.
The portable multiple spot pulse of aforesaid one wireless monitor system, it is characterized in that: described signal amplification filtering module comprises signal amplification circuit and filter circuit, the interfering signal that can produce space electromagnetic interference signal, body temperature and the power frequency interference signals of 50Hz suppress.
The portable multiple spot pulse of aforesaid one wireless monitor system, it is characterized in that: described signal amplification circuit adopts the low noise amplifier circuit that weak current is amplified to drive late-class circuit work, comprise integrated operational amplifier U1A, U1B, U1C, resistance R 1, R2, R3, R4, R5, R6, capacitor C 1, C2 composition, described integrated operational amplifier adopts the four-operational amplifier LM324 with differential input, wherein resistance R 1, common port of capacitor C 1 and the inverting input of integrated operational amplifier U1A, an outfan of piezoelectric film sensor is connected, another common port is the inverting input with integrated operational amplifier U1C through resistance R 4, resistance R 5 is connected, the other end of resistance R 5 is connected with the outfan of integrated operational amplifier U1C, a common port of resistance R 2, capacitor C 2 is connected with another outfan of piezoelectric film sensor, the inverting input of integrated operational amplifier U1B, and another common port is connected with the in-phase input end of integrated operational amplifier U1C through resistance R 3, one end of resistance R 6 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.
The portable multiple spot pulse of aforesaid one wireless monitor system, it is characterized in that: described filter circuit comprises low pass filter and band elimination filter, low pass filter is by integrated operational amplifier U2A, resistance R 7, R8, R9, R10, capacitor C 3, C4 composition, the inverting input of resistance R 10 one end U2A is connected, other end ground connection; The inverting input of R9 one end and U2A is connected, and the other end is connected with U2A outfan; The in-phase input end of capacitor C 4 one end and U2A is connected, one end ground connection; Capacitor C 3 one end are connected with the outfan of U2A, and one end is connected between R7 and R8; Capacitor C 5, C6 and resistance R 11, R13 parallel connection, be connected the outfan of U2A with the inverting input of U2B; The outfan of U2B is connected with in-phase input end; R14 is connected the in-phase input end of the outfan of U2B and U2C; The in-phase input end of U2C is by R15 ground connection; The outfan of U2C, by between C7 connection and R11, R13, is connected between C5, C6 by resistance R 12; 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 R 8, R7, integrated operational amplifier U2B is as amplifier, 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 reaches: portable multiple spot pulse wireless monitor system of the present invention can Measurement accuracy pulse wave, and data can be passed through to bluetooth, be wirelessly transmitted in the mobile clients such as mobile phone, equipment volume is little, be easy to carry, operate simpler, user can, not affecting under the prerequisite of work, study and motion, be understood the health status of self quickly and easily.
Brief description of the drawings
Fig. 1 is the system block diagram of portable multiple spot pulse wireless monitor system of the present invention.
Fig. 2 is the mancarried device structural representation that piezoelectric film sensor is housed of the present invention.
Fig. 3 is the signal amplification circuit figure of signal processing of the present invention and power supply unit.
Fig. 4 is the signal filter circuit figure of signal processing of the present invention and power supply unit.
Fig. 5 is the circuit diagram of the bluetooth communication of data communication units of the present invention.
Reference numeral 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 one side is used for installing bluetooth communication.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.Following examples are only for technical scheme of the present invention is more clearly described, and can not limit the scope of the invention with this.
As shown in Figure 1, portable multiple spot pulse wireless monitor system of the present invention, adopts mancarried device that unit is installed, and is provided with pulse collection unit, three parts of signal processing and power supply unit and data communication units in mancarried device; Pulse collection unit is mainly made up of piezoelectric film sensor; Signal processing and power supply unit are mainly made up of signal amplification filtering module, ADC module, control module, power module, the signal that piezoelectric film sensor gathers is connected with the external interrupt mouth of control module with ADC module through signal amplification filtering module, and signal amplification filtering module, control module are 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 mobile phone or the other-end equipment that function of Bluetooth communication is installed.
As shown in Figure 2, the global shape of mancarried device is cube shaped casing, and material is food stage silica gel, and height, in 3 centimetres, after warrantor contacts with device, can not produce harmful effect to human body skin.Mancarried device comprises three piezoelectric film sensor 1_1 that are 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 the device top 4 of power supply unit is installed, for device top one side 5 of bluetooth communication is installed.
Piezoelectric film sensor 1_1 of the present invention, piezoelectric film sensor 1_2, piezoelectric film sensor 1_3 is shaped as circle, and material is pvdf membrane.The representativeness of image data in order to improve, reduces the impact that indivedual error in datas bring, and these three piezoelectric film sensors are the symmetrical placement of equilateral triangle centered by the axis on bottom of device surface 2.Adopt the piezoelectric membrane piezoelectric constant of PVDF material large, variable force response sensitivity height is the highest in all piezoelectrics.It can not be depolarized in the alternating electric field of high frequency, and unit volume can obtain larger output.And PVDF piezoelectric membrane is frivolous pliable and tough, Qm is low, has broadband character, good with the stickiness of human body skin, thereby pulse signal is more easily transmitted, and the distortion factor reduces.Piezoelectric film sensor of the present invention, is made into circle simultaneously, make in the situation of same girth, and sensor area maximum, signal more easily transmits; On the other hand owing to differing in the passages through which vital energy circulates position of measured human body, three piezoelectric film sensors of this device are the symmetrical placement of equilateral triangle centered by the axis on bottom of device surface 2, make every two piezoelectric transducers form leg-of-mutton one side, thereby make measured place be equivalent to have at least two sensors at measuring-signal, such as a discharge is put three etc., may there is the situation of only having a sensor measuring than other placement forms.So modes of emplacement of the present invention, can more effectively address this problem, thereby makes measurement result more accurate.
Signal amplification filtering module of the present invention comprises signal amplification circuit and filter circuit, and the interfering signal that can produce space electromagnetic interference signal, body temperature and the power frequency interference signals of 50Hz suppress.
The signal amplification circuit of signal processing of the present invention and power supply unit, as shown in Figure 3, signal amplification circuit is a kind of low noise amplifier circuit that weak current is amplified to drive late-class circuit work.Comprise: piezoelectric film sensor, integrated operational amplifier U1A, U1B, U1C, resistance R 1, R2, R3, R4, R5, R6, capacitor C 1, C2 composition, integrated operational amplifier can adopt the four-operational amplifier LM324 with differential input.Wherein a common port of resistance R 1, capacitor C 1 is connected with the inverting input of integrated operational amplifier U1A, an outfan of sensor, and another common port is connected with inverting input, the resistance R 5 of integrated operational amplifier U1C through resistance R 4; The other end of resistance R 5 is connected with the outfan of integrated operational amplifier U1C; A common port of resistance R 2, capacitor C 2 is connected with another outfan of sensor, the inverting input of integrated operational amplifier U1B, and another common port is connected with the in-phase input end of integrated operational amplifier U1C through resistance R 3; One end of resistance R 6 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 R 1 and R2 equivalence, R3 and R4 equivalence, R5 and R6 equivalence, capacitor C 1 and C2 equivalence.
The time constant of signal amplification circuit, the lower-cut-off frequency of circuit control is:.Consider that human pulse wave frequency is about 0.5-2Hz, in order effectively to gather the signal of pulse wave, lower-cut-off frequency must be made as to 0.50.1Hz.So just can effectively suppress the interfering signal lower than 0.5Hz, shake produces as human body interference and thermal noise interference etc.
The filter circuit of signal processing of the present invention and power supply unit, as shown in Figure 4, comprises low pass filter and band elimination filter.Low pass filter is by integrated operational amplifier U2A, resistance R 7, R8, R9, R10, capacitor C 3, C4 composition.Band elimination filter is by integrated operational amplifier U2B, U2C, resistance R 11, R12, R13, R14, R15, capacitor C 5, C6, C7 composition.The inverting input of resistance R 10 one end U2A is connected, other end ground connection; The inverting input of R9 one end and U2A is connected, and the other end is connected with U2A outfan; The in-phase input end of capacitor C 4 one end and U2A is connected, one end ground connection; Capacitor C 3 one end are connected with the outfan of U2A, and one end is connected between R7 and R8; Capacitor C 5, C6 and resistance R 11, R13 parallel connection, be connected the outfan of U2A with the inverting input of U2B; The outfan of U2B is connected with in-phase input end; R14 is connected the in-phase input end of the outfan of U2B and U2C; The in-phase input end of U2C is by R15 ground connection; The outfan of U2C, by between C7 connection and R11, R13, is connected between C5, C6 by resistance R 12; The inverting input of U2C is connected with its outfan.The outfan of aforementioned amplifying circuit is connected to the positive input of integrated operational amplifier U2A by resistance R 8, R7, integrated operational amplifier U2B is 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, allows low frequency or DC component in signal to pass through, and suppresses high fdrequency component, and the low pass filter that the present invention uses is the voltage-controlled type low pass filter of second order, can make filtering characteristic more precipitous, improves filter effect.Band elimination filter of the present invention, it can, in the case of ensureing that the signal of other frequencies does not lose, effectively suppress a certain frequency information in input signal.This band elimination filter has good selecting frequency characteristic and higher quality factor.Integrated operational amplifier U2B is as amplifier, and its outfan is as the output of filter circuit, and U2C is connected into the form of voltage follower.The band elimination filter of making alive follower only just can not reach good attenuation characteristic in the time that decentre frequency is far away, therefore the quality factor of wave filter are not high, after adding voltage follower, quality factor are improved, thereby make the filter effect of wave filter better, and measurement result is also more 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 adopt the product of the STC12C5A60S2 of STC Corporation model to realize, its inner integrated multipath ADC functional module, there is the function that multi-channel analog signal gathers, bluetooth communication can adopt A T K-H C 05 principal and subordinate's one bluetooth serial ports modules as shown in Figure 5, realize, but be all not limited to this.
The work process of the portable multiple spot pulse of the present invention wireless monitor system is as follows: user uses portable multiple spot pulse wireless monitor system of the present invention, makes piezoelectric film sensor be close to wrist tremulous pulse place, and after opening power, system brings into operation.Three piezoelectric film sensors can be responded to beat pulse more exactly, after filtering and amplifying circuit and the processing of AD analog to digital conversion circuit, pass to control module, and control module is calculated the related data of pulse wave.Simultaneously by the wireless connections of control module control bluetooth equipment and mobile client.Once connect, mobile client can show in real time according to the data of bluetooth equipment transmission the relevant information of the pulse waves such as user's pulse intensity, speed, allow user not affecting under the prerequisite of work, study and motion, understand quickly and easily the health status of self.
The portable multiple spot pulse wireless monitor system the present invention relates to, by the piezoelectric film sensor Measurement accuracy pulse wave of three diverse locations, utilizes bluetooth module and mobile client to set up wireless connections, facilitate the wireless transmission of data, simple to operate, device volume is little, is easy to carry about with one.
More than show and described ultimate principle of the present invention, principal character and advantage.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; that in above-described embodiment and description, describes just illustrates principle of the present invention; 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 all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (10)
1. a portable multiple spot pulse wireless monitor system, adopts mancarried device that unit is installed, and is provided with pulse collection unit in mancarried device, and signal processing and power supply unit and data communication units, is characterized in that:
Described pulse collection unit is used for gathering human pulse signal;
Signal processing and power supply unit carry out amplification filtering and analog-to-digital conversion process for the signal that the collection of pulse collection unit is come, and utilize power supply unit to power to each module;
Data communication units is used for pulse information after treatment to carry out Bluetooth wireless transmission, and is presented in mobile client,
Described pulse collection unit comprises three piezoelectric film sensors, and described three piezoelectric film sensors are arranged on mancarried device lower surface, and three piezoelectric film sensors are centered by the axis on portable bottom of device surface, and equilateral triangle is symmetrical to be placed.
2. the portable multiple spot pulse of one according to claim 1 wireless monitor system, it is characterized in that: described signal processing and power supply unit are made up of signal amplification filtering module, ADC module, control module, power module, the signal that piezoelectric film sensor gathers is connected with the external interrupt mouth of control module with ADC module through described signal amplification filtering module, and described signal amplification filtering module, control module are all connected with power module.
3. the portable multiple spot pulse of one according to claim 2 wireless monitor system, it is characterized in that: described data communication units mainly comprises 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 mobile phone or the other-end equipment that function of Bluetooth communication is installed.
4. the portable multiple spot pulse of one according to claim 3 wireless monitor system, is characterized in that: described three piezoelectric film sensors share an ADC module and control module.
5. the portable multiple spot pulse of one according to claim 4 wireless monitor system, is characterized in that: described mancarried device is cube shaped casing, and material adopts food stage silica gel.
6. the portable multiple spot pulse of one according to claim 5 wireless monitor system, is characterized in that: described piezoelectric film sensor is shaped as circle, and material adopts pvdf membrane.
7. the portable multiple spot pulse of one according to claim 6 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 capable of supplying power at top module.
8. the portable multiple spot pulse of one according to claim 7 wireless monitor system, it is characterized in that: described signal amplification filtering module comprises signal amplification circuit and filter circuit, the interfering signal that can produce space electromagnetic interference signal, body temperature and the power frequency interference signals of 50Hz suppress.
9. the portable multiple spot pulse of one according to claim 8 wireless monitor system, it is characterized in that: described signal amplification circuit adopts the low noise amplifier circuit that weak current is amplified to drive late-class circuit work, comprise integrated operational amplifier U1A, U1B, U1C, resistance R 1, R2, R3, R4, R5, R6, capacitor C 1, C2 composition, described integrated operational amplifier adopts the four-operational amplifier LM324 with differential input, wherein resistance R 1, common port of capacitor C 1 and the inverting input of integrated operational amplifier U1A, an outfan of piezoelectric film sensor is connected, another common port is the inverting input with integrated operational amplifier U1C through resistance R 4, resistance R 5 is connected, the other end of resistance R 5 is connected with the outfan of integrated operational amplifier U1C, a common port of resistance R 2, capacitor C 2 is connected with another outfan of piezoelectric film sensor, the inverting input of integrated operational amplifier U1B, and another common port is connected with the in-phase input end of integrated operational amplifier U1C through resistance R 3, one end of resistance R 6 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.
10. the portable multiple spot pulse of one according to claim 9 wireless monitor system, it is characterized in that: described filter circuit comprises low pass filter and band elimination filter, low pass filter is by integrated operational amplifier U2A, resistance R 7, R8, R9, R10, capacitor C 3, C4 composition, the inverting input of resistance R 10 one end U2A is connected, other end ground connection; The inverting input of R9 one end and U2A is connected, and the other end is connected with U2A outfan; The in-phase input end of capacitor C 4 one end and U2A is connected, one end ground connection; Capacitor C 3 one end are connected with the outfan of U2A, and one end is connected between R7 and R8; Capacitor C 5, C6 and resistance R 11, R13 parallel connection, be connected the outfan of U2A with the inverting input of U2B; The outfan of U2B is connected with in-phase input end; R14 is connected the in-phase input end of the outfan of U2B and U2C; The in-phase input end of U2C is by R15 ground connection; The outfan of U2C, by between C7 connection and R11, R13, is connected between C5, C6 by resistance R 12; 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 R 8, R7, integrated operational amplifier U2B is as amplifier, its outfan is as the output of filter circuit, and U2C is connected into the form of voltage follower.
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| CN109645967A (en) * | 2019-01-28 | 2019-04-19 | 杭州电子科技大学 | A kind of long time-histories and the pulse detector and its pulse detection method of position self-test |
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| CN104000567B (en) | 2017-01-11 |
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