CN103294879A - Portable remote health monitoring system and implementation method thereof - Google Patents
Portable remote health monitoring system and implementation method thereof Download PDFInfo
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- CN103294879A CN103294879A CN2012100445735A CN201210044573A CN103294879A CN 103294879 A CN103294879 A CN 103294879A CN 2012100445735 A CN2012100445735 A CN 2012100445735A CN 201210044573 A CN201210044573 A CN 201210044573A CN 103294879 A CN103294879 A CN 103294879A
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Abstract
The invention belongs to the field of electronic medical instruments, and discloses a portable remote health monitoring system and an implementation method. The system comprises a portable remote monitor and a monitoring center server of a medical monitoring center. The portable remote monitor can monitor basic physiological parameters of a user, can judge whether the user falls over, and has wireless communication and geo-location functions; monitoring results are uploaded to the monitoring center server through a GPRS (general packet radio service) or CDMA (code division multiple access) wireless network and an Internet network, or are sent to a preset mobile phone number in a massage manner; the monitoring center server and a monitoring center PC terminal perform data communication through a local area network, and a medical worker of the monitoring center can monitor the health condition of the user; and a user family PC terminal accesses the monitoring center server and checks the physiological parameters and geographical location information of the user through the Internet network, so that the user can be remotely monitored, and requirements for family telemedicine and first aids are met.
Description
Technical field
The invention belongs to the medical electronics instrument field, relate to a kind of remote health monitoring system, monitor user's basic physiological parameter especially in real time, and upload the data on associated mechanisms or the personal mobile phone number, be adapted at family and community and use.
Background technology
Cardiovascular and cerebrovascular disease, cancer, senile dementia are the elderly's frequently-occurring disease and common diseases.Particularly cardiovascular and cerebrovascular disease is first killer of harm humans life and health, and coronary heart disease is one of chief-criminal wherein.Reach 5,890,000 people at China's patients of senile dementia, then can be increased to 1,020 ten thousand people to the year two thousand twenty.When all multi-experts are spoken of cardiovascular and cerebrovascular disease, promotion be " early " word, the one, early find, the 2nd, treatment early.And 1/2 to 2/3 diseases of cardiovascular and cerebrovascular systems patient is arranged owing to when morbidity, fail in time to deliver to hospital's treatment, and cause death.If can in time deliver to hospital, perhaps in time carry out cardiopulmonary resuscitation on the spot, having greatly, patient's life can both obtain saving.
But patient monitor in the past all is in the fixing use of Surveillance center of hospital, can not accomplish to measure in real time whenever and wherever possible, real-time Transmission.Reason is exactly that in the past patient monitor volume is not easy to greatly carry, and has limited use place and the service time of patient monitor.
Summary of the invention
In order to solve above deficiency, the objective of the invention is to develop a kind of remote health situation monitor system and its implementation that is constituted jointly by portable remote patient monitor and remote medical monitor center; The present invention not only can monitor and monitor user's basic physiological parameter and geo-localisation information in real time, can also its data transmission be given on medical monitoring center or the personal mobile phone number by network.
For achieving the above object, the present invention takes following technical scheme:
A kind of remote health monitoring system is characterized in that: comprise portable remote patient monitor, remote medical monitoring center, user family members PC terminal, gps satellite positioning system, GPRS or cdma network and Internet network; Wherein, the remote medical monitoring center is provided with monitoring central server and is connected in the Internet network; Described portable remote patient monitor is connected into the Internet network by GPRS or cdma network, by Internet network and monitoring central server communication data transmission, communicating by letter with the gps satellite positioning system by GPS module in the portable monitor obtains user's geographical location information, its geographic position that obtains and the physiological parameter measured is transferred to monitoring central server or logical GPRS or cdma network is transferred to its data on the mobile phone sign indicating number that has configured with the note form; Described user family members PC terminal is connected into Internet network and monitoring central server communication data transmission.
Described portable remote patient monitor comprises main control module, physiological parameter acquisition module, network communication module, input/output module, application module and power management module; Described physiological parameter acquisition module is responsible for gathering user's physiologic information and motion state information is transferred to the main control module, and information is leaded up to wireless network communication module and is transferred to monitoring central server after the processing of its output terminal; Another road sends input/output module information to and shows; Described application module and main control module interconnects connect, and are responsible for following the tracks of and locking user's geographic position.
The physiological parameter acquisition module comprises blood pressure and pulse detection unit, blood oxygen and pulse detection unit and motion state collecting unit, the human blood-pressure that described each unit is gathered respectively, blood oxygen and pulse and motion state information are sent into the input end of main control module, and connect with its main control module interconnects respectively.
Blood pressure and pulse detection unit comprise pressure transducer, inflation circuit and venting circuit; Wherein, pressure transducer connects together with the venting circuit with the inflation circuit with wrist strap by sebific duct, forms the gas circuit of a connection, and pressure transducer adopts the SPI interface to be connected with the main control module.
Blood oxygen and pulse detection unit comprise blood oxygen probe, blood oxygen probe driving circuit; Blood oxygen probe is made of dual wavelength ruddiness pipe, infrared light pipe and photoelectric receiving transducer; The blood oxygen probe driving circuit is made of the H bridge circuit, be connected with the main control module, and control ruddiness pipe and infrared light pipe is alternately luminous.
The motion state collecting unit adopts the 3-axis acceleration sensor of ADI company and peripheral circuit thereof to form; Wherein, 3-axis acceleration sensor and main control module are passed through I
2C interface connects.
Network communication module comprises GPRS module or CDMA module, by described GPRS or CDMA module with connect with the main control module interconnects, multiple physiological parameter and the user's current geographic position information that detects on the long distance monitoring instrument can be wirelessly transmitted on the monitoring central server.
Application module comprises time module and GPS module, and the GPS module is connected with the main control module respectively with time module.
A kind of implementation method of remote health monitoring system is characterized in that: comprise that step is as follows:
Alternately produce ruddiness and infrared light by blood oxygen probe, and gather the light intensity data of ruddiness and infrared light successively, utilize the Butterworth filtering algorithm respectively the light intensity data that collects to be handled, changed the absorbance variation ratio that calculates twin-beam than formula by absorbance; Utilize absorbance to change ratio by the quadratic fit formula calculating of blood oxygen saturation (blood oxygen), obtain blood oxygen (blood oxygen saturation) and pulse;
By the gas-static power in the pressure transducer collection wrist strap, utilize the Butterworth filtering algorithm to obtain the wave of oscillation of gas in the wrist strap, utilize the range coefficient method to calculate blood pressure (systolic pressure, diastolic pressure) and pulse;
The physiological parameter of above-mentioned measurement is kept in the single-chip microcomputer;
Arrive user's geographical location information by GPS module in the patient monitor and gps satellite positioning system communications reception;
By GPRS or cdma network physiological parameter result and geographical location information are transferred in the monitoring central server and to preserve;
By selecting the operating key of difference in functionality, can carry out physiological parameter or monitoring user's motion state of query history respectively or send the request of warning or start/shutdown.
The implementation procedure of monitoring user motion state:
Based on the acceleration changed features of human body at the process of falling three direction X, Y, Z, utilize 3-axis acceleration sensor to gather each axle acceleration value, and according to Acceleration Formula calculate three and accekeration, compare with reference point acceleration with the eigenstate of falling of setting, when satisfied weightlessness, bump, reference point static eigenstate and acceleration, be judged as and fall, and the warning message of will falling is issued monitoring central server.
The present invention has following beneficial effect and advantage:
1. simple to operate.It mainly is the Design Mode that solves the wire transmission of traditional " PC+patient monitor ", system of the present invention utilizes wireless communications mode to realize transmission of Information, collection is communicated by letter and guarded two functions is one, easy simple to operate, healthy population is periodically oneself's detection also, so that the early detection disease, thereby reach health care and prophylactic purpose.
2. show that the result is clear and definite.Testing result is presented on the liquid crystal display clearly with digital form, makes testing result come into plain view, easy-to-understand, and a plurality of testing results can be stored in the portable remote patient monitor, compare with historical data at any time, grasp the variation of the physiological parameter of self.
3. be easy to carry about with one.Portable remote patient monitor design volume is less, is convenient for people to detect anywhere or anytime.
4. upload data automatically.Be provided with timed sequence in the portable remote patient monitor, the patient for needing the whole day monitoring in the time interval that automatic measurement can be set and upload data, does not need user oneself to operate frequently.
5. prompting is reported to the police.Owing at the portable remote patient monitor various function keys are set, run into emergency as the user, can ask for help by triggering alarm keys, simple to operate, striven for more rescue time.In addition, when the user falls down or when triggering alarm keys, can send prompt tone, in order to the paramedic around the prompting.
6. location: when danger takes place, the gps satellite positioning system that user family members or community hospital can carry according to patient monitor, accurate in locating patient geographic location is conveniently sought and is given first aid to.
7. favorable expandability: people can customize own needed service according to the actual conditions needs of self, avoid unnecessary expenditure.
Description of drawings
Fig. 1 is remote monitoring system synoptic diagram of the present invention;
Fig. 2 is the block diagram of portable remote patient monitor of the present invention;
Fig. 3 physiological parameter trace routine general flow chart;
Fig. 4 blood pressure and pulse detection program flow diagram;
Fig. 5 blood oxygen and pulse detection program flow diagram;
Fig. 6 motion state trace routine process flow diagram;
The software configuration process flow diagram of Fig. 7 monitoring central server.
Embodiment
The present invention is further described below in conjunction with drawings and Examples.
Be the system framework figure of remote monitoring system as Fig. 1, a kind of remote health monitoring system is characterized in that: comprise portable remote patient monitor, remote medical monitoring center, user family members PC terminal, gps satellite positioning system, GPRS or cdma network and Internet network; Wherein, the remote medical monitoring center is provided with monitoring central server and is connected in the Internet network; Described portable remote patient monitor is connected into the Internet network by GPRS or cdma network, by Internet network and monitoring central server communication data transmission, communicating by letter with the gps satellite positioning system by GPS module in the portable monitor obtains user's geographical location information, its geographic position that obtains and the physiological parameter measured is transferred to monitoring central server or logical GPRS or cdma network is transferred to its data on the mobile phone sign indicating number that has configured with the note form; Described user family members PC terminal is connected into Internet network and monitoring central server communication data transmission.
As shown in Figure 2, be portable remote patient monitor structural drawing.
Described portable remote patient monitor comprises main control module, physiological parameter acquisition module, network communication module, input/output module, application module and power management module; Described physiological parameter acquisition module is responsible for gathering user's physiologic information and motion state information is transferred to the main control module, and information is leaded up to wireless network communication module and is transferred to monitoring central server after the processing of its output terminal; Another road sends input/output module information to and shows; Described application module and main control module interconnects connect, and are responsible for following the tracks of and locking user's geographic position.
The physiological parameter acquisition module comprises blood pressure and pulse detection unit, blood oxygen and pulse detection unit and motion state collecting unit, the human blood-pressure that described each unit is gathered respectively, blood oxygen and pulse and motion state information are sent into the input end of main control module, and connect with its main control module interconnects respectively.
Described main control module is with the Atmega128L of Atmel company single-chip microcomputer.
Blood pressure and pulse detection unit comprise pressure transducer, inflation circuit and venting circuit; Wherein, pressure transducer connects together with the venting circuit with the inflation circuit with wrist strap by sebific duct, forms the gas circuit of a connection, and pressure transducer adopts the SPI interface to be connected with the main control module.
In the system embodiment of the present invention, pressure transducer adopts model MS5536C in blood pressure and the pulse detection unit, and pressure transducer, inflation circuit and venting circuit connect together with wrist strap by sebific duct, form the gas circuit of a connection.Cooperate by the action between air pump, the solenoid valve, utilize the force value in the pressure sensor monitoring wrist strap to change, calculate pressure value by the force value of gathering.Pressure transducer MS5536C is connected with the employing SPI interface of main control module (Atmega128L single-chip microcomputer).The inflation circuit is made of air pump, triode and peripheral components, and by Atmega128L Single-chip Controlling air pump.The venting circuit is made of solenoid valve, triode and peripheral circuit, and by Atmega128L Single-chip Controlling solenoid valve.
Blood oxygen and pulse detection unit comprise blood oxygen probe, blood oxygen probe driving circuit; Blood oxygen probe is made of dual wavelength ruddiness pipe, infrared light pipe and photoelectric receiving transducer; The blood oxygen probe driving circuit is made of the H bridge circuit, be connected with the main control module, and control ruddiness pipe and infrared light pipe is alternately luminous.
The motion state collecting unit adopts the 3-axis acceleration sensor of ADI company and peripheral circuit thereof to form; Wherein, 3-axis acceleration sensor and main control module are passed through I
2C interface connects.
Network communication module comprises GPRS module or CDMA module, by described GPRS or CDMA module with connect with the main control module interconnects, multiple physiological parameter and the user's current geographic position information that detects on the long distance monitoring instrument can be wirelessly transmitted on the monitoring central server.
Described GPRS module is transferred to the multiple physiological parameter that detects on the long distance monitoring terminal and geographic position data information wireless in the monitoring central server.The transmission of this data is not limited by the region, as long as seamless communication just can be realized in the place that has the mobile communication signal to cover.It is the ISR35 module that the present invention has selected the GPRS module of Siriusmobility company.The ISR35 module has the GPRS function, and operating voltage is between 3.4～4.2V, and is low in energy consumption.Atmega128L is connected with the GPRS module by the UART interface, sends the AT order it is controlled, and finally physiological parameter and geographic position data is wirelessly transmitted in the monitoring central server.
Described CDMA module, the present invention has selected the MC323CDMA module of Huawei Company.MC323 module working frequency range CDMA20001X 800Hz, operating voltage is between 3.3～4.2V, the main control module is connected with the CDMA module by the UART interface, sends the AT order it is controlled, and finally physiological parameter and geographic position data information wireless is transferred in the monitoring central server.
Input/output module comprises button and two parts of LCDs.Four function buttons are arranged, and are respectively alarm keys, function key, memory button and beginning/stop key, accomplish the end in view by the operation to different key.The LCDs model is JH12864-COG76, and operating voltage is 3.3V.LCDs and Atmega128L pass through I
2C interface connects.Be mainly used to show physiological parameter in real time, upload information and gps satellite locating information.
Application module comprises time module and GPS module, and the GPS module is connected with the main control module respectively with time module.
Time module mainly is responsible for extracting real-time time information, is convenient to the user record Measuring Time.Time module comprises real-time timepiece chip DS1302 and peripheral circuit thereof.Adopt the synchronous serial mode to communicate between clock chip DS1302 and the Atmega128L single-chip microcomputer.
The GPS module receives the downgoing signal that obtains the gps satellite positioning system by gps antenna.The operator can comprise longitude, latitude and height above sea level according to the particular geographic location information that these calculated signals go out the user.That GPS module of the present invention is selected is the SR-100 that ProGin Technology company produces.The operating voltage of this module is 3～6V, is connected by its serial ports with the Atmega128L single-chip microcomputer.
The portable remote patient monitor needs two kinds of voltage: 3.7～4.2V and 3.3V voltage.3.7～4.2V is directly provided by lithium battery.3.3V voltage mainly is converted to 3.7～4.2V by power conversion chip XC6221A332MR, offers pressure transducer, LCDs and acceleration transducer.The required power supply of other devices is supplied by lithium battery voltage.
In order to save electric weight, increased power supply control chip RT9701CB and peripheral circuit thereof, the switch control pin of this chip is connected with the Atmega128L single-chip microcomputer, is controlled the switch of this chip by the Atmega128L single-chip microcomputer.The RT9701CB chip be input as lithium battery voltage, its output voltage is 3.7～4.2V or is 0V voltage, therefore, after the Atmega128L single-chip microcomputer dormant state, can turn-off the power supply power supply of other devices effectively, thereby save electric weight.
As shown in Figure 3, be physiology parameter detecting general flow chart.The implementation method of remote health monitoring system is characterized in that: comprise that step is as follows:
Alternately produce ruddiness and infrared light by blood oxygen probe, and gather the light intensity data of ruddiness and infrared light successively, utilize the Butterworth filtering algorithm respectively the light intensity data that collects to be handled, changed the absorbance variation ratio that calculates twin-beam than formula by absorbance; Utilize absorbance to change ratio by the quadratic fit formula calculating of blood oxygen saturation (blood oxygen), obtain blood oxygen (blood oxygen saturation) and pulse;
By the gas-static power in the pressure transducer collection wrist strap, utilize the Butterworth filtering algorithm to obtain the wave of oscillation of gas in the wrist strap, utilize the range coefficient method to calculate blood pressure (systolic pressure, diastolic pressure) and pulse;
The physiological parameter of above-mentioned measurement is kept in the single-chip microcomputer;
Arrive user's geographical location information by GPS module in the patient monitor and gps satellite positioning system communications reception;
By GPRS network or cdma network physiological parameter result and geographical location information are transferred in the monitoring central server and to preserve;
By selecting the operating key of difference in functionality, can carry out physiological parameter or monitoring user's motion state of query history respectively or send the request of warning or start/shutdown.
As shown in Figure 4, be blood pressure and pulse detection process flow diagram, blood pressure and pulse detection further specify: at first booster air pump constantly inflates for wrist strap, continuous increase along with pressure, gather the static pressure in the wrist strap, the interference such as vibration that utilize the Butterworth filtering algorithm to remove air pump obtain the wave of oscillation of gas in the wrist strap;
According to the range coefficient method, obtain the largest peaks P of the wave of oscillation.Obtain first peak value Ps=P*0.5 forward according to peak value P, obtain first peak value Pu=P*0.6 backward, obtain corresponding crude sampling value Us and Uu according to peak value Ps and Pu, then be systolic pressure and the expansion pressure of the blood pressure of asking by reduction formula Us*2/100 and Uu*2/100.
In the process of filtering, calculate 10 number of samples count between the pulse, then the number of heartbeat is in the per minute: 60/ (0.096*count/10), namely pulse (heart rate) is 6250.0/count; Preserve at last and measure blood pressure and pulse (heart rate).
As shown in Figure 5, be blood oxygen and pulse detection process flow diagram, adopt dual wavelength transmission-type photoelectric measurement method, its principle based on oxygen in the blood and haemoglobin and reduced hemoglobin in ruddiness and infrared light region absorption spectra characteristic.Send the ruddiness (660nm) of two kinds of wavelength and infrared light (940nm) by ruddiness pipe and infrared light pipe and see through finger top respectively and penetrate, photoelectric receiving transducer receives transmitted light and the electric signal that produces, has reflected two kinds of light transmitted light intensity separately.
By blood oxygen probe the ruddiness that sees through finger and the light intensity of infrared light are gathered, and the image data of twin-beam light intensity is carried out filtering respectively handle.Second order Butterworth filtering method is adopted in filtering, the disturbing effect of elimination surround lighting etc.Obtain the light intensity wave of oscillation after the filtering, ask for ruddiness maximal value Redh and minimum value Redl more respectively, the maximal value IRedh of infrared light and minimum value IRedl, ask for ratio Q=IRedh* (Redh-Redl)/(Redh* (IRedh-IRedl)) of the absorbance variation of two kinds of wavelength then, then according to the approximate formula S of blood oxygen saturation (blood oxygen)
aO
2=aQ
2+ bQ+c (wherein a, b, c are that coefficient is obtained by the actual measurement data match) calculates S
aO
2Blood oxygen saturation is blood oxygen.
In filtering between the n peak value of the ruddiness light intensity wave of oscillation and m the peak value, heartbeat m-n time, the sampling rate of supposing the system is S, total A[m between m peak value and the n peak value]-A[n] individual sampled point, namely obtain pulse (heart rate) and be:
The result is preserved in the single-chip microcomputer.
The implementation procedure of monitoring user motion state:
Based on the acceleration changed features of human body at the process of falling three direction X, Y, Z, utilize 3-axis acceleration sensor to gather each axle acceleration value, and according to Acceleration Formula calculate three and accekeration, compare with reference point acceleration with the eigenstate of falling of setting, when satisfied weightlessness, bump, reference point static eigenstate and acceleration, be judged as and fall, and the warning message of will falling is issued monitoring central server.
As shown in Figure 6, be motion state testing process figure.The implementation procedure of monitoring user motion state:
Enable 3-axis acceleration sensor and gather the accekeration of X, Y, Z axle, and calculate size with acceleration; The reference point of comparison and accekeration and state of weightlessness; Whether judgement and accekeration meet weightlessness, bump, static eigenstate successively, if all satisfy condition, then send the warning message of falling by GPRS or CDMA module to monitoring central server.
If when not meeting weightlessness, bump, static eigenstate with accekeration, return the accekeration of gathering X, Y, Z axle respectively again.
As shown in Figure 7, portable monitor is the data that measure, is transferred to monitoring central server by GPRS network or cdma network and Internet network.Watchdog routine on the monitoring central server writes database to data after receiving data.Watchdog routine reads data in real time, and data is carried out logic analysis handle, and whether judgment data is normal, if data are normal, do not process; If data exception, the personnel of Surveillance center can dial 120 first-aid centre's phones, perhaps user, user family members' phone.User's physiological parameter and geographic position locating information show that at the demonstration large-size screen monitors of Surveillance center user or user family members also can check relevant information data by the PC terminal with Internet access to netwoks monitoring central server.
Claims (10)
1. a remote health monitoring system is characterized in that: comprise portable remote patient monitor, remote medical monitoring center, user family members PC terminal, gps satellite positioning system, GPRS or cdma network and Internet network; Wherein, the remote medical monitoring center is provided with monitoring central server and is connected in the Internet network; Described portable remote patient monitor is connected into the Internet network by GPRS or cdma network, by Internet network and monitoring central server communication data transmission, communicating by letter with the gps satellite positioning system by GPS module in the portable monitor obtains user's geographical location information, and its geographic position that obtains and the physiological parameter measured are transferred to monitoring central server or are transferred to its data on the mobile phone that has configured with the note form by GPRS or cdma network; Described user family members PC terminal is connected into Internet network and monitoring central server communication data transmission.
2. according to the described remote health monitoring system of claim 1, it is characterized in that: described portable remote patient monitor comprises main control module, physiological parameter acquisition module, network communication module, input/output module, application module and power management module; Described physiological parameter acquisition module is responsible for gathering user's physiologic information and motion state information is transferred to the main control module, and the information after its output terminal is handled is leaded up to wireless network communication module and is transferred to monitoring central server; Another road sends the input/output module information of carrying out to and shows; Described application module and main control module interconnects connect, and are responsible for following the tracks of and locking user's geographic position.
3. according to the described remote health monitoring system of claim 2, it is characterized in that: the physiological parameter acquisition module comprises blood pressure and pulse detection unit, blood oxygen and pulse detection unit and motion state collecting unit, the human blood-pressure that described each unit is gathered respectively, blood oxygen and pulse and motion state information are sent into the input end of main control module, and connect with its main control module interconnects respectively.
4. according to the described remote health monitoring system of claim 3, it is characterized in that: blood pressure and pulse detection unit comprise pressure transducer, inflation circuit and venting circuit; Wherein, pressure transducer connects together with the venting circuit with the inflation circuit with wrist strap by sebific duct, forms the gas circuit of a connection, and pressure transducer adopts the SPI interface to be connected with the main control module.
5. according to the described remote health monitoring system of claim 3, it is characterized in that: blood oxygen and pulse detection unit comprise blood oxygen probe, blood oxygen probe driving circuit; Blood oxygen probe is made of dual wavelength ruddiness pipe, infrared light pipe and photoelectric receiving transducer; The blood oxygen probe driving circuit is made of the H bridge circuit, be connected with the main control module, and control ruddiness pipe and infrared light pipe is alternately luminous.
6. according to the described remote health monitoring system of claim 3, it is characterized in that: the motion state collecting unit adopts the 3-axis acceleration sensor of ADI company and peripheral circuit thereof to form; Wherein, 3-axis acceleration sensor and main control module are passed through I
2C interface connects.
7. according to the described remote health monitoring system of claim 2, it is characterized in that: network communication module comprises GPRS module or CDMA module, by described GPRS or CDMA module with connect with the main control module interconnects, multiple physiological parameter and the user's current geographic position information that detects on the long distance monitoring instrument can be wirelessly transmitted on the monitoring central server.
8. according to the described remote health monitoring system of claim 2, it is characterized in that: application module comprises time module and GPS module, and the GPS module is connected with the main control module respectively with time module.
9. the implementation method of the described remote health monitoring system of claim 1 is characterized in that: comprise that step is as follows:
Alternately produce ruddiness and infrared light by blood oxygen probe, and gather the light intensity data of ruddiness and infrared light successively, utilize the Butterworth filtering algorithm respectively the light intensity data that collects to be handled, changed the absorbance variation ratio that calculates twin-beam than formula by absorbance; Utilize absorbance to change ratio by the quadratic fit formula calculating of blood oxygen saturation, obtain blood oxygen saturation and pulse, blood oxygen saturation is blood oxygen;
By the gas-static power in the pressure transducer collection wrist strap, utilize the Butterworth filtering algorithm to obtain the wave of oscillation of gas in the wrist strap, utilize the range coefficient method to calculate systolic pressure, diastolic pressure and pulse, systolic pressure and diastolic pressure are blood pressure;
The physiological parameter of above-mentioned measurement is kept in the single-chip microcomputer;
Arrive user's geographical location information by GPS module in the patient monitor and gps satellite positioning system communications reception;
By GPRS or cdma network physiological parameter result and geographical location information are transferred in the monitoring central server and to preserve;
By selecting the operating key of difference in functionality, can carry out physiological parameter or monitoring user's motion state of query history respectively or send the request of warning or start/shutdown.
10. according to the implementation method of the described remote health monitoring system of claim 9, it is characterized in that: the implementation procedure of monitoring user motion state:
Based on the acceleration changed features of human body at the process of falling three direction X, Y, Z, utilize 3-axis acceleration sensor to gather each axle acceleration value, and according to Acceleration Formula calculate three and accekeration, compare with reference point acceleration with the eigenstate of falling of setting, when satisfied weightlessness, bump, reference point static eigenstate and acceleration, be judged as and fall, and the warning message of will falling is issued monitoring central server.
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