CN103948377A - Portable wireless vital sign monitor - Google Patents
Portable wireless vital sign monitor Download PDFInfo
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- CN103948377A CN103948377A CN201410211556.5A CN201410211556A CN103948377A CN 103948377 A CN103948377 A CN 103948377A CN 201410211556 A CN201410211556 A CN 201410211556A CN 103948377 A CN103948377 A CN 103948377A
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Abstract
The invention relates to a portable wireless vital sign monitor, which comprises terminal detection equipment and wireless receiving equipment, wherein the terminal detection equipment comprises a single chip microcomputer control module, a sensor acquisition module, a terminal coordinator, an LCD (liquid crystal display) display module and a power module; the wireless receiving equipment comprises a main coordinator and a computer, wherein the computer supplies power to the main coordinator. According to the portable wireless vital sign monitor disclosed by the invention, the vital sign signals comprising the body temperature, the pulse, the respiratory rate and the blood pressure of a user, which are collected by the terminal detection equipment, are processed, displayed and sent; the vital sign signals are received by the wireless receiving equipment and are displayed by a computer. The portable wireless vital sign monitor has the characteristics of low energy consumption, low cost, safety, reliability, strong instantaneity, high detection precision and convenience in carrying.
Description
Technical field
The present invention relates to medical monitoring field, particularly a kind of portable mobile wireless vital sign monitor.
Background technology
Vital sign generally includes the parameters such as heart beating, pulse, blood pressure and body temperature, and under normal circumstances, these sign values maintain in certain scope; When the variation of vital sign and abnormal, understand dynamic change and the pathological characters of fuselage state by detecting these physical sign parameters.Traditional vital sign monitoring is mainly measured by medical personnel's pertinent instruments and instrument, due to the diversity of manual operation existence, check the value very easily produces error, and the transmission of sign data is also by manually completing, so just cause the delay of information, the pathological change that likely therefore cannot grasp in time patient causes rescue time delay, and bad accident occurs.In addition, traditional sign measurement is separately independently, and due to the use of the instrument based on conventional and instrument, uses operation also comparatively loaded down with trivial details even if be brought together, and is unfavorable for obtaining of physical sign parameters.At present, domestic hospitals mainly applies to intensive care unit (ICU) to the Real-Time Monitoring of vital sign, although avoided the problems referred to above, but monitoring instrument is with high costs, environment for use requires that high, volume is large, inconvenient operation, need patient to concentrate fixing and can only be for small number of patients simultaneously.Due to reasons such as the effective uses of client need activity and medical space, in sign measuring process, employing wireless communication technology just seems particularly important.
Summary of the invention
In order to overcome the deficiency of traditional vital sign monitoring real-time, data accuracy and universality, the object of this invention is to provide a kind of portable mobile wireless vital sign monitor, can realize the detection to body temperature, pulse, respiratory frequency and blood pressure.
For achieving the above object, the present invention by the following technical solutions: a kind of portable mobile wireless vital sign monitor, it is characterized in that, comprising: terminal checkout equipment and radio receiver; Described terminal checkout equipment comprises single chip control module, and the sensor acquisition module being connected with described single chip control module, for sending that described single chip control module sign detects the terminal coordinator of data and for showing in real time the LCD display module that detects data; Described sensor acquisition module comprise can be sandwiched in user oxter body temperature trans module, can be clipped in the pulse transducer module of user finger tip, be fixed on the pressure transducer module of user arm and be fixed on the respiration pickup module of user abdominal part by supporting belt by blood pressure cuff; Described terminal detection module comprises a power module, is connected respectively and corresponding running voltage is provided with described sensor acquisition module, described single chip control module, described terminal coordinator; Described radio receiver comprises master coordinator, and described master coordinator and described terminal coordinator are by radio communication, and described master coordinator is connected with computer, and for the sign situation of on-line monitoring user, described computer provides power supply to described master coordinator simultaneously.
In an embodiment of the present invention, described body temperature trans module comprises thermosensitive resistor and circuit, constant-current source circuit and differential amplifier circuit; Described thermosensitive resistor and circuit adopts four-wire system connected mode, and the power line of critesistor is accessed to described constant-current source circuit, and the holding wire of described critesistor is connected to described differential amplifier circuit; Described constant-current source circuit comprises resistance R 5, resistance R 6, audion Q1, manostat TL431 and power input D4; Wherein power input D4 input 5V voltage; Resistance R 5 one end are connected with power input D4 and the colelctor electrode that accesses audion Q1 is connected, and resistance R 5 other ends are connected with the negative electrode of stabilivolt TL431 and access the base stage of audion Q1; The reference utmost point of stabilivolt TL431 is connected with resistance R 6 one end and accesses the emitter stage of audion Q1, and the anode of TL431 is connected with the other end of resistance R 6 and accesses the input of described critesistor power line; Described differential amplifier circuit comprises the outfan D5 of resistance R 7, resistance R 8, resistance R 9, resistance R 10, amplifier A2 and amplifier A2; Wherein resistance R 7 one end are connected with the holding wire of described critesistor, and resistance R 7 other ends are connected with one end of resistance R 9 and access the in-phase input end of amplifier A2; The other end ground connection of resistance R 9; One end of resistance R 8 is connected with the holding wire of described critesistor, and resistance R 8 other ends are connected with one end of resistance R 10 and access the inverting input of amplifier A2; The other end of resistance R 10 is connected with the outfan D5 of amplifier A2; The outfan D5 of amplifier A2 is connected with 12 bit A/D converters of described single chip control module.
In an embodiment of the present invention, the pulse signal collection of described pulse transducer module can change with heart rhythm based on the micro-blood volume of finger, the principle that blood also changes the absorption of light thereupon, utilizes photoplethysmography (PPG) to detect pulse signal to realize noinvasive; Described pulse transducer module comprises photoelectric coupled circuit, filter amplification circuit, detecting circuit and signal conditioning circuit; The optical signal that described photoelectric coupled circuit produces micro-finger tip blood volume-variation is converted into the signal of telecommunication, i.e. PPG signal; PPG signal is through described filter amplification circuit, and described detecting circuit and described signal conditioning circuit are processed output rectangular pulse signal, and described single chip control module is by obtaining Pulse Rate per minute to the sampling of described rectangular pulse signal; Described photoelectric coupled circuit comprises optocoupler PC and resistance R 11, resistance R 12, power input mouth D6 and power input mouth D7, and wherein 5V voltage is inputted from power input mouth D6, power input mouth D7; The light emitting diode of optocoupler PC is connected with resistance R 11 one end, and the other end of the light emitting diode of optocoupler PC is connected with power input mouth D7; The other end ground connection of resistance R 11; The audion Q2 of optocoupler PC is connected with resistance R 12 one end and as the outfan of described photoelectric coupled circuit, output PPG signal; The other end ground connection of resistance R 12; Described filter amplification circuit comprises capacitor C 7, amplifier A3 and resistance R 13, resistance R 14, resistance R 15, wherein capacitor C 7 one end connect the outfan of described photoelectric coupled circuit, the PPG signal that reception is transmitted, one end of the other end of capacitor C 7 and resistance R 13 is connected and accesses the in-phase input end of amplifier A3; Resistance R 13 other end ground connection; Resistance R 14 one end ground connection, resistance R 14 other ends are connected with one end of resistance R 15 and access the inverting input of amplifier A3; The other end of resistance R 15 is connected with the outfan of amplifier A3; Described detecting circuit comprises that diode DI, resistance R 16, resistance R 17, capacitor C 8 and capacitor C 9 form, the anode of diode DI is connected with the outfan of described filter amplification circuit amplifier A3, and the negative electrode of diode DI is connected with one end of resistance R 16, capacitor C 9 parallel connected end and accesses one end of resistance R 17; The other end of resistance R 16, capacitor C 9 parallel connected end is connected with one end of capacitor C 8 and ground connection; The other end of capacitor C 8 is connected with the other end of resistance R 17 and as the outfan of described detecting circuit; Described signal conditioning circuit comprises amplifier A4, hex inverter 74LS14, resistance R 18, resistance R 19, resistance R 20, resistance R 21, capacitor C 10, capacitor C 11 and signal output part D8, and the positive input of amplifier A4 connects the outfan of described detecting circuit; Resistance R 19 and one end of capacitor C 10 parallel connections be connected with the outfan of amplifier A4, resistance R 19 is connected with one end of resistance R 18 with the other end of capacitor C 10 parallel connections and accesses the reverse input end of amplifier A4; The other end ground connection of resistance R 18; One end of resistance R 20 is connected with the outfan of amplifier A4, and resistance R 20 other ends are connected with one end of resistance R 21 and access the input of hex inverter 74LS14; The other end of resistance R 21 is connected with the outfan of hex inverter 74LS14; Capacitor C 11 one end ground connection, the other end of capacitor C 11 is connected with the outfan of hex inverter 74LS14; The outfan of hex inverter 74LS14 as signal output part D8 and described single chip control module seizure port be connected.
In an embodiment of the present invention, described respiration pickup module comprises piezoelectric, filter amplification circuit and signal conditioning circuit; The abdominal pressure fluctuating signal that described piezoelectric produces by being collected in human body respiration, pressure signal is converted to the signal of telecommunication, the signal of telecommunication is shaped as rectangular pulse through described filter amplification circuit, described modulate circuit, and the capture channel of described single chip control module is by obtaining frequency of respiration per minute to the sampling of described rectangular pulse signal; Described filter amplification circuit comprises amplifier A5, resistance R 22, resistance R 23, capacitor C 12, rheostat POT1 and voltage input end D9, voltage input end D9 input 3.3V voltage; One end of capacitor C 12 is connected with the signal input part of described piezoelectric, and the other end of capacitor C 12 is connected with one end of resistance R 22 and accesses the in-phase input end of amplifier A5; The other end of resistance R 22 is connected and accesses baseline voltage with a stiff end of rheostat POT1; The inverting input of the movable contact access amplifier A5 of rheostat POT1, another stiff end of rheostat POT1 is connected with one end of resistance R 23 and the inverting input that accesses amplifier A5 is connected; The other end of resistance R 23 connects the outfan of amplifier A5; Described signal conditioning circuit comprises hex inverter 74LS14, resistance R 24, resistance R 25, capacitor C 13 and signal output part D10, one end of resistance R 24 is connected with the outfan of the amplifier A5 of described filter amplification circuit, and the other end of resistance R 24 is connected with one end of resistance R 25 and accesses the input of hex inverter 74LS14; Resistance R 25 other ends are connected with the outfan of hex inverter 74LS14; One end ground connection of capacitor C 13, the other end of capacitor C 13 is connected to the outfan of hex inverter 74LS14; The outfan of hex inverter 74LS14 is connected with the seizure port of described single chip control module as output signal end D10.
In an embodiment of the present invention, described pressure transducer module comprises blood pressure sensing circuit, filter amplification circuit, blood pressure pulsed triggering circuit, control chip circuit; Described pressure transducer module adopts the ripple method of shaking, and pulse wave and cuff pressure ripple detected from arm humerus tremulous pulse, obtains the parameter such as systolic pressure, diastolic pressure by waveforms detection analysis; Described blood pressure sensing circuit comprises BP01 type pressure transducer, amplifier MAX4472 and voltage input end D11, voltage input end D11 input 5V voltage, BP01 type pressure transducer is custom-designed for detecting blood pressure, be mainly used in Portable Electronic Blood Pressure Monitor, it adopts accurate thick film ceramic chip and nylon plastic(s) encapsulation, there is high linearity, low noise and the little feature of extraneous stress, adopt inner demarcation and temperature-compensating mode; The inside amplifier A of amplifier MAX4472 connects constant-current source, for BP01 type pressure transducer provides constant electric current; The inside amplifier B of amplifier MAX4472, inner amplifier C and the input of inner amplifier D composition difference, Single-end output amplifying circuit, from the OUTD port output blood pressure initial measurement signal of amplifier MAX4472, and described blood pressure initial measurement signal is directly inputted to the DC component of the ADC0 Monitoring of blood pressure of described control chip circuit, obtain systolic pressure and diastolic pressure; Described filter amplification circuit comprises integrated filter MAX267, amplifier MAX4471 and voltage input end D12, D13, D14, D16, D17, D18, voltage input end D12, D13, D16, D17, D18 input 5V voltage, voltage input end D14 input-5V voltage, wave filter MAX267 forms band filter, allow the signal of 0.8～38Hz to pass through, filter high-frequency noise and the power frequency interference of flip-flop in described blood pressure initial measurement signal and power supply and skin and cuff friction; Described blood pressure initial measurement signal further amplifies through amplifier MAX4471 after by described filter amplification circuit, obtain the matching voltage signal of described control chip circuit, input the ADC2 of described control chip circuit, the AC compounent of Monitoring of blood pressure, the transient time position of definite systolic pressure and diastolic pressure after analytical calculation; Described blood pressure pulsed triggering circuit comprises comparator MAX9028, and described matching voltage signal converts rectangular pulse signal to by comparator MAX9028, triggers the ADC1 work of described control chip circuit; Described control chip circuit provides PWM output to control air-pump inflating gas leakage and adjusts cuff internal gas pressure; Described control chip circuit is connected with the asynchronous serial communication interface of described single chip control module, by asynchronous serial communication, the blood pressure data gathering in described control chip circuit is uploaded to described single chip control module.
In an embodiment of the present invention, described power module adopts large capacity, chargeable 9V lithium battery, at the negative pole of described lithium battery contact a switch S and a LED, forms a series circuit; Described switch S control on and off switch; Whether described LED instruction power supply accesses; Series circuit two ends electrochemical capacitor C3 in parallel and the leaded multilayer ceramic capacitor C4 of described lithium battery, form a lithium battery parallel circuit, and the output voltage of described lithium battery is carried out to filtering voltage regulation; Voltage after filtering voltage regulation is by the input of one end access three-terminal voltage-stabilizing chip 7805 of described lithium battery parallel circuit and the input of voltage stabilizing chip 1117-3.3V; Two outfans electrochemical capacitor C1 in parallel and the leaded multilayer ceramic capacitor C2 of described three-terminal voltage-stabilizing chip 7805, form a parallel circuit; One end of the parallel circuit of described three-terminal voltage-stabilizing chip 7805 is connected with one end of resistance R 1 and ground connection; The other end of resistance R 1 is connected with the other end of described lithium battery parallel circuit, plays the effect of current limliting; The other end of the parallel circuit of described three-terminal voltage-stabilizing chip 7805 is as 5V voltage output end D1, and described voltage output end D1 connects a reverse amplification circuit; Described see-saw circuit comprises amplifier A1, resistance R 2, resistance R 3, resistance R 4 and voltage output end D3, the wherein in-phase input end of one end of resistance R 4 access amplifier A1, the other end ground connection of resistance R 4; One termination voltage output end D1 of resistance R 3, the other end of resistance R 3 is connected with one end of resistance R 2 and accesses the inverting input of amplifier A1; The other end of resistance R 2 is connected with the outfan of amplifier A1; The outfan of amplifier A1 is as voltage output end D3, output-5V voltage; The outfan of described voltage stabilizing chip 1117-3.3V is connected with one end of the parallel circuit of electrochemical capacitor C5, leaded multilayer ceramic capacitor C6 composition and as voltage output end D2, exports 3.3V voltage; The other end of the parallel circuit of electrochemical capacitor C5, leaded multilayer ceramic capacitor C6 composition is connected with the other end of described lithium battery parallel circuit.
In an embodiment of the present invention, the I/O mouth of the data line ports of described LCD display module, control line port and described single chip control module is connected, and described LCD display shows the sign data of user.
In an embodiment of the present invention, described terminal coordinator and described master coordinator all adopt the radio frequency chip CC2530 that supports Zigbee protocol.
In an embodiment of the present invention, described terminal coordinator is connected with the asynchronous serial communication interface of described single chip control module, communicate by Transistor-Transistor Logic level and described single chip control module, be transmit port RX and the receiving port TX of the asynchronous serial communication of described terminal coordinator, be connected with asynchronous serial communication receiving port and the transmit port of described single chip control module respectively, the voltage input end D19 input 3.3V voltage of described terminal coordinator is as chip CC2530 running voltage.
In an embodiment of the present invention, the asynchronous communication transmit port RX of described master coordinator is connected with interface convertor PL2303 with receiving port TX, is converted into USB interface by described interface convertor PL2303; The port UD+ of described interface convertor PL2303 and port UD-are connected in the USB interface of described computer, realize the asynchronous serial communication of described master coordinator and described computer.
Compared to prior art, the present invention has following beneficial effect:
The present invention little compared with traditional monitoring equipment volume, be easy to carry; The present invention is intensively arranged on described sensor acquisition module, described power module, described terminal coordinator and described LCD display module on described terminal checkout equipment, and each module realized simplifying in usage space on the basis that ensures function separately, reduce the inconvenience of the use that the dispersibility of conventional detection devices brings;
2. the present invention is high, real-time compared with traditional monitoring equipment Inspection precision; Body temperature sensing module, pulse sensing module, breathing sensing module and blood pressure sensing module in the module of sensor acquisition described in the present invention all upload to surveyed sign data described single chip control module to carry out by corresponding algorithm process, be converted into the relevant sign data that can intuitively read, and show by described LCD display module; In data acquisition, transmission and processing procedure, be all automatically to complete, reduced artificial participation factor, on accuracy of detection and accuracy, be improved, realized real-time measurement demonstration; Described single chip control module is directly transferred to radio receiver and is shown by described computer by the described terminal coordinator sign data of being correlated with, and without artificial record submission, has reduced time delay, real-time while further having strengthened detection;
3. the present invention is simple and convenient compared with traditional monitoring equipment operating, and has simplified measurement and recording process; When use, only corresponding sensor folder need be worn over and can monitor vital signs values with it, can carry out real-time observation at described terminal checkout equipment, do not affect user daily life and action, also detection data are transferred to computer through Wireless Telecom Equipment simultaneously, simplify the process of preserving from record, feedback and the computer of sign data, reached simultaneously and implement monitoring object.Meanwhile, this system has been born medical personnel's surveying work, allows them can go other medical tasks, has reasonably distributed medical resource, effectively reduces medical treatment cost;
4. in the present invention, the transmission of measurement data and reception are to complete by the radio frequency chip based on Zigbee protocol, and with respect to traditional monitoring scheme, this wireless communication technology has following advantage: the first, and real-time; ZigBee response speed is quite fast, and ZigBee device node accesses whole wireless network and only needs 30 milliseconds, and the data that node monitors are as long as very short time delay just can be uploaded to host computer.Effectively avoid the impact of anthropic factor on the transmission of traditional monitoring data, further improved accuracy and the real-time of efficiency and data; The second, ZigBee-network Construction of Low Cost; Compare in ICU and be worth several equipment of ten million, the wireless radio frequency modules of ZigBee only needs dozens of yuan on the market at present.The 3rd, ZigBee module dissipation is low; ZigBee module is under super low consumption standby mode, and the electric weight of two joint No.5 cells can use at least half a year, has saved the energy, has reduced device damage rate;
5. the present invention adopts small voltage DC source power supply, and the running voltage of modules also all adopts small voltage energy supply, overall reduction the power consumption of complete machine; In addition, the modules that the present invention adopts has all adopted low cost, high performance device, more easily large-scale popularization.
Brief description of the drawings
Fig. 1 is hardware principle block diagram of the present invention.
Fig. 2 is the illustrative view of functional configuration of one embodiment of the invention.
Fig. 3 is temperature sensor module circuit diagram of the present invention.
Fig. 4 is pulse transducer modular circuit schematic diagram of the present invention.
Fig. 5 is respiration pickup modular circuit schematic diagram of the present invention.
Fig. 6 is pressure transducer modular circuit schematic diagram of the present invention.
Fig. 7 is power module circuitry figure of the present invention.
Fig. 8 is terminal coordinator circuit diagram of the present invention.
Fig. 9 is master coordinator circuit diagram of the present invention.
Figure 10 is LCD display module circuit diagram of the present invention.
Figure 11 is the wearing schematic diagram of temperature sensor of the present invention and respiration pickup.
Figure 12 is the wearing schematic diagram of pulse transducer of the present invention and pressure transducer.
Detailed description of the invention
Below in conjunction with accompanying drawing, technical scheme of the present invention is specifically described.
Concrete, in order to allow those skilled in the art better understand the present invention, below above-mentioned each module is described further.It is a kind of portable mobile wireless vital sign monitor that the present invention adopts technical scheme, shown in Fig. 1 and Fig. 2, it is characterized in that, comprising: terminal checkout equipment and radio receiver; Described terminal checkout equipment comprises single chip control module, and the sensor acquisition module being connected with described single chip control module, for sending that described single chip control module sign detects the terminal coordinator of data and for showing in real time the LCD display module that detects data; Described sensor acquisition module comprise can be sandwiched in user oxter body temperature trans module, can be clipped in the pulse transducer module of user finger tip, be fixed on the pressure transducer module of user arm and be fixed on the respiration pickup module of user abdominal part by supporting belt by blood pressure cuff; Described terminal detection module comprises a power module, is connected respectively and corresponding running voltage is provided with described sensor acquisition module, described single chip control module, described terminal coordinator; Described radio receiver comprises master coordinator, and described master coordinator and described terminal coordinator are by radio communication, and described master coordinator is connected with computer, and for the sign situation of on-line monitoring user, described computer provides power supply to described master coordinator simultaneously.
That the described single chip control module of terminal checkout equipment is in the present embodiment used is single-chip microcomputer MSP430F149.The CPU of single-chip microcomputer MSP430F149 has 16 super low-power consumption microcontrollers, 60kB flash memory, 2KB RAM.This single-chip microcomputer is reduced instruction set computer (RISC) structure of 16, has abundant addressing system, succinct 27 core instructions and a large amount of dummy instructions; In a large amount of depositors and sheet, data storage all can be participated in multiple computing, table look-up efficiently in addition processing method and higher processing speed, and processing capacity is powerful, fully meets the processing of modules data in the present invention.This single-chip microcomputer is integrated more rich interior peripheral hardware: analog comparater A, intervalometer A, intervalometer B, serial communication interface USART0 and USART1, hardware multiplier, 12 ADC, port one ~ 6, house dogs, download debugging interface JTAG and a DCO internal oscillator and two external clocks with the erasable FLASH memorizer of writing, program, the 32.768k crystal oscillator of the external low speed of XT1, the 8M crystal oscillator of the external high speed of XT2.Under low-power consumption, use 32.768k that sprocket pulse is provided; In the time that peripheral hardware needs high-frequency clock frequency, can open 8M crystal oscillator, configuration utility is convenient like this, can effectively save power supply; And under low power mode of operation, little to the radiation of human body and environment, electromagnetic interference is little, system works is stable, unfailing performance is good.
Power module in the present embodiment adopts large capacity, chargeable 9V lithium battery, as shown in Figure 7, at the negative pole of described lithium battery contact a switch S and a LED, forms a series circuit; Described switch S control on and off switch; Whether described LED instruction power supply accesses; Series circuit two ends electrochemical capacitor C3 in parallel and the leaded multilayer ceramic capacitor C4 of described lithium battery, form a lithium battery parallel circuit, and the output voltage of described lithium battery is carried out to filtering voltage regulation; Voltage after filtering voltage regulation is by the input of one end access three-terminal voltage-stabilizing chip 7805 of described lithium battery parallel circuit and the input of voltage stabilizing chip 1117-3.3V; Two outfans electrochemical capacitor C1 in parallel and the leaded multilayer ceramic capacitor C2 of described three-terminal voltage-stabilizing chip 7805, form a parallel circuit; One end of the parallel circuit of described three-terminal voltage-stabilizing chip 7805 is connected with one end of resistance R 1 and ground connection; The other end of resistance R 1 is connected with the other end of described lithium battery parallel circuit, plays the effect of current limliting; The other end of the parallel circuit of described three-terminal voltage-stabilizing chip 7805 is as 5V voltage output end D1, and described voltage output end D1 connects a reverse amplification circuit; Described see-saw circuit comprises amplifier A1, resistance R 2, resistance R 3, resistance R 4 and voltage output end D3, the wherein in-phase input end of one end of resistance R 4 access amplifier A1, the other end ground connection of resistance R 4; One termination voltage output end D1 of resistance R 3, the other end of resistance R 3 is connected with one end of resistance R 2 and accesses the inverting input of amplifier A1; The other end of resistance R 2 is connected with the outfan of amplifier A1; The outfan of amplifier A1 is as voltage output end D3, output-5V voltage; The outfan of described voltage stabilizing chip 1117-3.3V is connected with one end of the parallel circuit of electrochemical capacitor C5, leaded multilayer ceramic capacitor C6 composition and as voltage output end D2, exports 3.3V voltage; The other end of the parallel circuit of electrochemical capacitor C5, leaded multilayer ceramic capacitor C6 composition is connected with the other end of described lithium battery parallel circuit.This power module machine volume is little, low price, can fully meet the power demands of modules in terminal checkout equipment simultaneously.
Being used in the present embodiment show user sign data LCD display module use be liquid crystal display LCD LM041L, as shown in figure 10, this liquid crystal display is made up of 16 × 4 dot character positions, each character bit can show a character (can show 16 × 4 characters), and between each character bit, has the interval of a point.One group of 8 I/O mouth of the data line ports D0-D7 of display lcd LM041L and single-chip microcomputer MSP430F149 are connected, and control line port RS, RW, the E of display lcd LM041L are connected with 3 I/O mouths of single-chip microcomputer MSP430F149.
In the present embodiment, the terminal coordinator of described terminal checkout equipment and the master coordinator of described radio receiver all adopt radio frequency chip CC2530, as shown in Figure 8.Radio frequency chip CC2530 is one of radio frequency chip of the support Zigbee protocol of a Texas Instruments production, and its volume is little, low in energy consumption, and cost is low, and the standard of support is new, highly sensitive.In CC2530 sheet, carry enhancement mode 8051CPU, RF transceiver, 21 I/O mouths, watchdog circuit, 16 bit timing device, 8 bit timing device, the 32kHz sleep timer that has capture function, 8 tunnel 12 bit A/D converters, AES security protocol processor, 2 groups of serial ports and battery monitor etc. of supporting multiple serial communication protocol.In addition, there are 2 RC agitators (32k and 16M) and 2 external clocks (32768 and 32M) in radio frequency chip CC2530 inside, 32kHz or 32768Hz are mainly as the clock of park mode and WatchDog Timer, system clock can use 16MHz or 32MHz agitator, but must use 32MHz agitator when RF works.Known as shown in Figure 8, terminal coordinator is connected with the asynchronous serial communication interface of single-chip microcomputer MSP430F149, because the running voltage of radio frequency chip CC2530 and single-chip microcomputer MSP430F149 is all 3.3V, can directly communicate with Transistor-Transistor Logic level, be transmit port RX and the receiving port TX of the asynchronous serial communication of terminal coordinator, the asynchronous serial communication receiving port of single-chip microcomputer MSP430F149, transmit port connect respectively, and voltage input end D19 input 3.3V voltage is as radio frequency chip CC2530 running voltage.As shown in Figure 9, the asynchronous communication transmit port RX of the master coordinator of described radio receiver is connected with interface convertor PL2303 with receiving port TX; Be converted into USB interface by described interface convertor PL2303; The port UD+ of described interface convertor PL2303 and port UD-are connected in the USB interface of described computer, realize the asynchronous serial communication of described master coordinator and described computer.
Body temperature trans module in the present embodiment adopts platinum resistance thermometer sensor, PT100, and platinum resistance thermometer sensor, PT100 is positive temperature coefficient temperature-sensitive element.In the time that temperature is 0 degree Celsius, platinum resistance thermometer sensor, PT100 resistance value is 100 Ω; Temperature exceedes 0 while spending, and once, platinum resistance thermometer sensor, PT100 resistance value resistance approximately increases by 0.39 Ω in every rising.As shown in Figure 3, described body temperature trans module comprises thermosensitive resistor and circuit, constant-current source circuit and differential amplifier circuit; Described thermosensitive resistor and circuit adopts four-wire system connected mode, and the power line of critesistor is accessed to described constant-current source circuit, and the holding wire of described critesistor is connected to described differential amplifier circuit; Described constant-current source circuit comprises resistance R 5, resistance R 6, audion Q1, manostat TL431 and power input D4; Wherein power input D4 input 5V voltage; Resistance R 5 one end are connected with power input D4 and the colelctor electrode that accesses audion Q1 is connected, and resistance R 5 other ends are connected with the negative electrode of stabilivolt TL431 and access the base stage of audion Q1; The reference utmost point of stabilivolt TL431 is connected with resistance R 6 one end and accesses the emitter stage of audion Q1, and the anode of TL431 is connected with the other end of resistance R 6 and accesses the input of described critesistor power line; Described differential amplifier circuit comprises the outfan D5 of resistance R 7, resistance R 8, resistance R 9, resistance R 10, amplifier A2 and amplifier A2; Wherein resistance R 7 one end are connected with the holding wire of described critesistor, and resistance R 7 other ends are connected with one end of resistance R 9 and access the in-phase input end of amplifier A2; The other end ground connection of resistance R 9; One end of resistance R 8 is connected with the holding wire of described critesistor, and resistance R 8 other ends are connected with one end of resistance R 10 and access the inverting input of amplifier A2; The other end of resistance R 10 is connected with the outfan D5 of amplifier A2; The outfan D5 of amplifier A2 is connected with 12 bit A/D converters of single-chip microcomputer MSP430F149.In the time that user uses this module to carry out temperature monitoring, shown in Figure 11, platinum resistance thermometer sensor, PT100 probe is sandwiched in to user oxter, 12 bit A/D converters of single-chip microcomputer MSP430F149 are by sampling to gathered temperature signal, data after sampling calculate corresponding temperature value after CPU computing, and on the display lcd LM041L of terminal checkout equipment displays temperature value, this temperature value is sent to master coordinator through terminal coordinator simultaneously, master coordinator is uploaded to computer, shows and record the temperature value of user at computer interface.
The infrared pulse transducer HKG-07A that pulse transducer module in the present embodiment adopts Hefei China Tech electronic technology to grind.The pulse signal collection of this sensor assembly can change with heart rhythm based on the micro-blood volume of finger, and the principle that blood also changes the absorption of light thereupon utilizes photoplethysmography (PPG) to detect pulse signal to realize noinvasive; As shown in Figure 4, described pulse transducer module comprises photoelectric coupled circuit, filter amplification circuit, detecting circuit and signal conditioning circuit; The optical signal that described photoelectric coupled circuit produces micro-finger tip blood volume-variation is converted into the signal of telecommunication, i.e. PPG signal; PPG signal is through described filter amplification circuit, and described detecting circuit and described signal conditioning circuit are processed output rectangular pulse signal, and described single chip control module is by obtaining Pulse Rate per minute to the sampling of described rectangular pulse signal; Described photoelectric coupled circuit comprises optocoupler PC and resistance R 11, resistance R 12, power input mouth D6 and power input mouth D7, and wherein 5V voltage is inputted from power input mouth D6, power input mouth D7; The light emitting diode of optocoupler PC is connected with resistance R 11 one end, and the other end of the light emitting diode of optocoupler PC is connected with power input mouth D7; The other end ground connection of resistance R 11; The audion Q2 of optocoupler PC is connected with resistance R 12 one end and as the outfan of described photoelectric coupled circuit, output PPG signal; The other end ground connection of resistance R 12; Described filter amplification circuit comprises capacitor C 7, amplifier A3 and resistance R 13, resistance R 14, resistance R 15, wherein capacitor C 7 one end connect the outfan of described photoelectric coupled circuit, the PPG signal that reception is transmitted, one end of the other end of capacitor C 7 and resistance R 13 is connected and accesses the in-phase input end of amplifier A3; Resistance R 13 other end ground connection; Resistance R 14 one end ground connection, resistance R 14 other ends are connected with one end of resistance R 15 and access the inverting input of amplifier A3; The other end of resistance R 15 is connected with the outfan of amplifier A3; Described detecting circuit comprises that diode DI, resistance R 16, resistance R 17, capacitor C 8 and capacitor C 9 form, the anode of diode DI is connected with the outfan of described filter amplification circuit amplifier A3, and the negative electrode of diode DI is connected with one end of resistance R 16, capacitor C 9 parallel connected end and accesses one end of resistance R 17; The other end of resistance R 16, capacitor C 9 parallel connected end is connected with one end of capacitor C 8 and ground connection; The other end of capacitor C 8 is connected with the other end of resistance R 17 and as the outfan of described detecting circuit; Described signal conditioning circuit comprises amplifier A4, hex inverter 74LS14, resistance R 18, resistance R 19, resistance R 20, resistance R 21, capacitor C 10, capacitor C 11 and signal output part D8, and the positive input of amplifier A4 connects the outfan of described detecting circuit; Resistance R 19 and one end of capacitor C 10 parallel connections be connected with the outfan of amplifier A4, resistance R 19 is connected with one end of resistance R 18 with the other end of capacitor C 10 parallel connections and accesses the reverse input end of amplifier A4; The other end ground connection of resistance R 18; One end of resistance R 20 is connected with the outfan of amplifier A4, and resistance R 20 other ends are connected with one end of resistance R 21 and access the input of hex inverter 74LS14; The other end of resistance R 21 is connected with the outfan of hex inverter 74LS14; Capacitor C 11 one end ground connection, the other end of capacitor C 11 is connected with the outfan of hex inverter 74LS14; The outfan of hex inverter 74LS14 as signal output part D8 and described single chip control module seizure port be connected.In the time that user uses this module to carry out monitoring of pulse, shown in Figure 12, infrared pulse transducer HKG-07A is clipped in to finger tip, the capture channel of single-chip microcomputer MSP430F149 obtains Pulse Rate per minute by described rectangular pulse signal is sampled, and this pulse frequency is shown on display lcd LM041L, this pulse frequency is sent to master coordinator through terminal coordinator, master coordinator is uploaded to computer simultaneously, shows and record the pulse frequency of user at computer interface.
Respiration pickup module in the present embodiment adopts Hefei China Tech electronic technology to grind researched and developed respiration pickup HKH-11B.As shown in Figure 5, described respiration pickup module comprises piezoelectric, filter amplification circuit and signal conditioning circuit; The abdominal pressure fluctuating signal that described piezoelectric produces by being collected in human body respiration, pressure signal is converted to the signal of telecommunication, the signal of telecommunication is shaped as rectangular pulse through described filter amplification circuit, described modulate circuit, and the capture channel of described single chip control module is by obtaining frequency of respiration per minute to the sampling of described rectangular pulse signal; Described filter amplification circuit comprises amplifier A5, resistance R 22, resistance R 23, capacitor C 12, rheostat POT1 and voltage input end D9, voltage input end D9 input 3.3V voltage; One end of capacitor C 12 is connected with the signal input part of described piezoelectric, and the other end of capacitor C 12 is connected with one end of resistance R 22 and accesses the in-phase input end of amplifier A5; The other end of resistance R 22 is connected and accesses baseline voltage with a stiff end of rheostat POT1; The inverting input of the movable contact access amplifier A5 of rheostat POT1, another stiff end of rheostat POT1 is connected with one end of resistance R 23 and the inverting input that accesses amplifier A5 is connected; The other end of resistance R 23 connects the outfan of amplifier A5; Described signal conditioning circuit comprises hex inverter 74LS14, resistance R 24, resistance R 25, capacitor C 13 and signal output part D10, one end of resistance R 24 is connected with the outfan of the amplifier A5 of described filter amplification circuit, and the other end of resistance R 24 is connected with one end of resistance R 25 and accesses the input of hex inverter 74LS14; Resistance R 25 other ends are connected with the outfan of hex inverter 74LS14; One end ground connection of capacitor C 13, the other end of capacitor C 13 is connected to the outfan of hex inverter 74LS14; The outfan of hex inverter 74LS14 is connected with the seizure port of described single chip control module as output signal end D10.In the time that user uses this module to carry out monitoring of respiration, as shown in figure 11, respiration pickup HKH-11B is fixed on to user abdominal part with supporting belt, the capture channel of single-chip microcomputer MSP430F149 obtains frequency of respiration per minute by described rectangular pulse signal is sampled, and this respiratory frequency is shown on display lcd LM041L, this respiratory frequency is sent to master coordinator through terminal coordinator simultaneously, master coordinator is uploaded to computer, shows and record the respiratory frequency of user at computer interface.
Pressure transducer module in the present embodiment adopts Hefei China Tech electronic technology to grind researched and developed pressure transducer HKB-08B.As shown in Figure 6, described pressure transducer module comprises blood pressure sensing circuit, filter amplification circuit, blood pressure pulsed triggering circuit, control chip circuit; Described pressure transducer module adopts the ripple method of shaking, and pulse wave and cuff pressure ripple detected from arm humerus tremulous pulse, obtains the parameter such as systolic pressure, diastolic pressure by waveforms detection analysis; Described blood pressure sensing circuit comprises BP01 type pressure transducer, amplifier MAX4472 and voltage input end D11, voltage input end D11 input 5V voltage, BP01 type pressure transducer is custom-designed for detecting blood pressure, be mainly used in Portable Electronic Blood Pressure Monitor, it adopts accurate thick film ceramic chip and nylon plastic(s) encapsulation, there is high linearity, low noise and the little feature of extraneous stress, adopt inner demarcation and temperature-compensating mode; The inside amplifier A of amplifier MAX4472 connects constant-current source, for BP01 type pressure transducer provides constant electric current; The inside amplifier B of amplifier MAX4472, inner amplifier C and the input of inner amplifier D composition difference, Single-end output amplifying circuit, from the OUTD port output blood pressure initial measurement signal of amplifier MAX4472, and described blood pressure initial measurement signal is directly inputted to the DC component of the ADC0 Monitoring of blood pressure of described control chip circuit, obtain systolic pressure and diastolic pressure; Described filter amplification circuit comprises integrated filter MAX267, amplifier MAX4471 and voltage input end D12, D13, D14, D16, D17, D18, voltage input end D12, D13, D16, D17, D18 input 5V voltage, voltage input end D14 input-5V voltage, wave filter MAX267 forms band filter, allow the signal of 0.8～38Hz to pass through, filter high-frequency noise and the power frequency interference of flip-flop in described blood pressure initial measurement signal and power supply and skin and cuff friction; Described blood pressure initial measurement signal further amplifies through amplifier MAX4471 after by described filter amplification circuit, obtain the matching voltage signal of described control chip circuit, input the ADC2 of described control chip circuit, the AC compounent of Monitoring of blood pressure, the transient time position of definite systolic pressure and diastolic pressure after analytical calculation; Described blood pressure pulsed triggering circuit comprises comparator MAX9028, and described matching voltage signal converts rectangular pulse signal to by comparator MAX9028, triggers the ADC1 work of described control chip circuit; Described control chip circuit provides PWM output to control air-pump inflating gas leakage and adjusts cuff internal gas pressure; Described control chip circuit is connected with the asynchronous serial communication interface of described single chip control module, by asynchronous serial communication, the blood pressure data gathering in described control chip circuit is uploaded to described single chip control module.In the time that user uses this module to carry out monitoring of blood pressure, as shown in figure 12, the blood pressure cuff that pressure transducer HKB-08B is installed is entirely wound in to upper arm middle part (can not be entangled in elbow joint portion), the lower edge of cuff is apart from the about 1-2cm of the fossa cubitalis, and the degree of tightness that cuff volume is pricked is advisable can just insert a finger.While starting blood pressure measurement, single-chip microcomputer MSP430F149 sends and detects blood pressure instruction, and pressure transducer HKB-08B starts working and processes gathered blood pressure signal, and blood pressure data after treatment is sent to single-chip microcomputer MSP430F149.Through single-chip microcomputer MSP430F149 process after on display lcd LM041L display of blood pressure value, this pressure value terminal coordinator is sent to master coordinator simultaneously, master coordinator is uploaded to computer, shows and record the pressure value of user at computer interface.
Be more than preferred embodiment of the present invention, all changes of doing according to technical solution of the present invention, when the function producing does not exceed the scope of technical solution of the present invention, all belong to protection scope of the present invention.
Claims (10)
1. a portable mobile wireless vital sign monitor, is characterized in that, comprising: terminal checkout equipment and radio receiver; Described terminal checkout equipment comprises single chip control module, and the sensor acquisition module being connected with described single chip control module, for sending that described single chip control module sign detects the terminal coordinator of data and for showing in real time the LCD display module that detects data; Described sensor acquisition module comprise can be sandwiched in user oxter body temperature trans module, can be clipped in the pulse transducer module of user finger tip, be fixed on the pressure transducer module of user arm and be fixed on the respiration pickup module of user abdominal part by supporting belt by blood pressure cuff; Described terminal detection module comprises a power module, is connected respectively and corresponding running voltage is provided with described sensor acquisition module, described single chip control module, described terminal coordinator; Described radio receiver comprises master coordinator, and described master coordinator and described terminal coordinator are by radio communication, and described master coordinator is connected with computer, and for the sign situation of on-line monitoring user, described computer provides power supply to described master coordinator simultaneously.
2. a kind of portable mobile wireless vital sign monitor according to claim 1, is characterized in that: described body temperature trans module comprises thermosensitive resistor and circuit, constant-current source circuit and differential amplifier circuit; Described thermosensitive resistor and circuit adopts four-wire system connected mode, and the power line of critesistor is accessed to described constant-current source circuit, and the holding wire of described critesistor is connected to described differential amplifier circuit; Described constant-current source circuit comprises resistance R 5, resistance R 6, audion Q1, manostat TL431 and power input D4; Wherein power input D4 input 5V voltage; Resistance R 5 one end are connected with power input D4 and the colelctor electrode that accesses audion Q1 is connected, and resistance R 5 other ends are connected with the negative electrode of stabilivolt TL431 and access the base stage of audion Q1; The reference utmost point of stabilivolt TL431 is connected with resistance R 6 one end and accesses the emitter stage of audion Q1, and the anode of TL431 is connected with the other end of resistance R 6 and accesses the input of described critesistor power line; Described differential amplifier circuit comprises the outfan D5 of resistance R 7, resistance R 8, resistance R 9, resistance R 10, amplifier A2 and amplifier A2; Wherein resistance R 7 one end are connected with the holding wire of described critesistor, and resistance R 7 other ends are connected with one end of resistance R 9 and access the in-phase input end of amplifier A2; The other end ground connection of resistance R 9; One end of resistance R 8 is connected with the holding wire of described critesistor, and resistance R 8 other ends are connected with one end of resistance R 10 and access amplifier A2 inverting input; The other end of resistance R 10 is connected with the outfan D5 of amplifier A2; The outfan D5 of amplifier A2 is connected with 12 bit A/D converters of described single chip control module.
3. a kind of portable mobile wireless vital sign monitor according to claim 1, it is characterized in that: the pulse signal collection of described pulse transducer module can change with heart rhythm based on the micro-blood volume of finger, the principle that blood also changes the absorption of light thereupon, utilizes photoplethysmography (PPG) to detect pulse signal to realize noinvasive; Described pulse transducer module comprises photoelectric coupled circuit, filter amplification circuit, detecting circuit and signal conditioning circuit; The optical signal that described photoelectric coupled circuit produces micro-finger tip blood volume-variation is converted into the signal of telecommunication, i.e. PPG signal; PPG signal is through described filter amplification circuit, and described detecting circuit and described signal conditioning circuit are processed output rectangular pulse signal, and described single chip control module is by obtaining Pulse Rate per minute to the sampling of described rectangular pulse signal; Described photoelectric coupled circuit comprises optocoupler PC and resistance R 11, resistance R 12, power input mouth D6 and power input mouth D7, and wherein 5V voltage is inputted from power input mouth D6, power input mouth D7; The light emitting diode of optocoupler PC is connected with resistance R 11 one end, and the other end of the light emitting diode of optocoupler PC is connected with power input mouth D7; The other end ground connection of resistance R 11; The audion Q2 of optocoupler PC is connected with resistance R 12 one end and as the outfan of described photoelectric coupled circuit, output PPG signal; The other end ground connection of resistance R 12; Described filter amplification circuit comprises capacitor C 7, amplifier A3 and resistance R 13, resistance R 14, resistance R 15, wherein capacitor C 7 one end connect the outfan of described photoelectric coupled circuit, the PPG signal that reception is transmitted, one end of the other end of capacitor C 7 and resistance R 13 is connected and accesses the in-phase input end of amplifier A3; Resistance R 13 other end ground connection; Resistance R 14 one end ground connection, resistance R 14 other ends are connected with one end of resistance R 15 and access the inverting input of amplifier A3; The other end of resistance R 15 is connected with the outfan of amplifier A3; Described detecting circuit comprises that diode DI, resistance R 16, resistance R 17, capacitor C 8 and capacitor C 9 form, the anode of diode DI is connected with the outfan of described filter amplification circuit amplifier A3, and the negative electrode of diode DI is connected with one end of resistance R 16, capacitor C 9 parallel connected end and accesses one end of resistance R 17; The other end of resistance R 16, capacitor C 9 parallel connected end is connected with one end of capacitor C 8 and ground connection; The other end of capacitor C 8 is connected with the other end of resistance R 17 and as the outfan of described detecting circuit; Described signal conditioning circuit comprises amplifier A4, hex inverter 74LS14, resistance R 18, resistance R 19, resistance R 20, resistance R 21, capacitor C 10, capacitor C 11 and signal output part D8, and the positive input of amplifier A4 connects the outfan of described detecting circuit; Resistance R 19 and one end of capacitor C 10 parallel connections be connected with the outfan of amplifier A4, resistance R 19 is connected with one end of resistance R 18 with the other end of capacitor C 10 parallel connections and accesses the reverse input end of amplifier A4; The other end ground connection of resistance R 18; One end of resistance R 20 is connected with the outfan of amplifier A4, and resistance R 20 other ends are connected with one end of resistance R 21 and access the input of hex inverter 74LS14; The other end of resistance R 21 is connected with the outfan of hex inverter 74LS14; Capacitor C 11 one end ground connection, the other end of capacitor C 11 is connected with the outfan of hex inverter 74LS14; The outfan of hex inverter 74LS14 as signal output part D8 and described single chip control module seizure port be connected.
4. a kind of portable mobile wireless vital sign monitor according to claim 1, is characterized in that: described respiration pickup module comprises piezoelectric, filter amplification circuit and signal conditioning circuit; The abdominal pressure fluctuating signal that described piezoelectric produces by being collected in human body respiration, pressure signal is converted to the signal of telecommunication, the signal of telecommunication is shaped as rectangular pulse through described filter amplification circuit, described modulate circuit, and the capture channel of described single chip control module is by obtaining frequency of respiration per minute to the sampling of described rectangular pulse signal; Described filter amplification circuit comprises amplifier A5, resistance R 22, resistance R 23, capacitor C 12, rheostat POT1 and voltage input end D9, voltage input end D9 input 3.3V voltage; One end of capacitor C 12 is connected with the signal input part of described piezoelectric, and the other end of capacitor C 12 is connected with one end of resistance R 22 and accesses the in-phase input end of amplifier A5; The other end of resistance R 22 is connected and accesses baseline voltage with a stiff end of rheostat POT1; The inverting input of the movable contact access amplifier A5 of rheostat POT1, another stiff end of rheostat POT1 is connected with one end of resistance R 23 and the inverting input that accesses amplifier A5 is connected; The other end of resistance R 23 connects the outfan of amplifier A5; Described signal conditioning circuit comprises hex inverter 74LS14, resistance R 24, resistance R 25, capacitor C 13 and signal output part D10, one end of resistance R 24 is connected with the outfan of the amplifier A5 of described filter amplification circuit, and the other end of resistance R 24 is connected with one end of resistance R 25 and accesses the input of hex inverter 74LS14; The other end of resistance R 25 is connected with the outfan of hex inverter 74LS14; One end ground connection of capacitor C 13, the other end of capacitor C 13 is connected to the outfan of hex inverter 74LS14; The outfan of hex inverter 74LS14 is connected with the seizure port of described single chip control module as output signal end D10.
5. a kind of portable mobile wireless vital sign monitor according to claim 1, is characterized in that: described pressure transducer module comprises blood pressure sensing circuit, filter amplification circuit, blood pressure pulsed triggering circuit, control chip circuit; Described pressure transducer module adopts the ripple method of shaking, and pulse wave and cuff pressure ripple detected from arm humerus tremulous pulse, obtains the parameter such as systolic pressure, diastolic pressure by waveforms detection analysis; Described blood pressure sensing circuit comprises BP01 type pressure transducer, amplifier MAX4472 and voltage input end D11, voltage input end D11 input 5V voltage, BP01 type pressure transducer is custom-designed for detecting blood pressure, be mainly used in Portable Electronic Blood Pressure Monitor, it adopts accurate thick film ceramic chip and nylon plastic(s) encapsulation, there is high linearity, low noise and the little feature of extraneous stress, adopt inner demarcation and temperature-compensating mode; The inside amplifier A of amplifier MAX4472 connects constant-current source, for BP01 type pressure transducer provides constant electric current; The inside amplifier B of amplifier MAX4472, inner amplifier C and the input of inner amplifier D composition difference, Single-end output amplifying circuit, from the OUTD port output blood pressure initial measurement signal of amplifier MAX4472, and described blood pressure initial measurement signal is directly inputted to the DC component of the ADC0 Monitoring of blood pressure of described control chip circuit, obtain systolic pressure and diastolic pressure; Described filter amplification circuit comprises integrated filter MAX267, amplifier MAX4471 and voltage input end D12, D13, D14, D16, D17, D18, voltage input end D12, D13, D16, D17, D18 input 5V voltage, voltage input end D14 input-5V voltage, MAX267 forms band filter, allow the signal of 0.8～38Hz to pass through, filter high-frequency noise and the power frequency interference of flip-flop in described blood pressure initial measurement signal and power supply and skin and cuff friction; Described blood pressure initial measurement signal further amplifies through amplifier MAX4471 after by described filter amplification circuit, obtain the matching voltage signal of described control chip circuit, input the ADC2 of described control chip circuit, the AC compounent of Monitoring of blood pressure, the transient time position of definite systolic pressure and diastolic pressure after analytical calculation; Described blood pressure pulsed triggering circuit comprises comparator MAX9028, and described matching voltage signal converts rectangular pulse signal to by comparator MAX9028, triggers the ADC1 work of described control chip circuit; Described control chip circuit provides PWM output to control air-pump inflating gas leakage and adjusts cuff internal gas pressure; Described control chip circuit is connected with the asynchronous serial communication interface of described single chip control module, by asynchronous serial communication, the blood pressure data gathering in described control chip circuit is uploaded to described single chip control module.
6. a kind of portable mobile wireless vital sign monitor according to claim 1, is characterized in that: described power module adopts large capacity, chargeable 9V lithium battery, at the negative pole of described lithium battery contact a switch S and a LED, forms a series circuit; Described switch S control on and off switch; Whether described LED instruction power supply accesses; Series circuit two ends electrochemical capacitor C3 in parallel and the leaded multilayer ceramic capacitor C4 of described lithium battery, form a lithium battery parallel circuit, and the output voltage of described lithium battery is carried out to filtering voltage regulation; Voltage after filtering voltage regulation is by the input of one end access three-terminal voltage-stabilizing chip 7805 of described lithium battery parallel circuit and the input of voltage stabilizing chip 1117-3.3V; Two outfans electrochemical capacitor C1 in parallel and the leaded multilayer ceramic capacitor C2 of described three-terminal voltage-stabilizing chip 7805, form a parallel circuit; One end of the parallel circuit of described three-terminal voltage-stabilizing chip 7805 is connected with one end of resistance R 1 and ground connection; The other end of resistance R 1 is connected with the other end of described lithium battery parallel circuit, plays the effect of current limliting; The other end of the parallel circuit of described three-terminal voltage-stabilizing chip 7805 is as 5V voltage output end D1, and described voltage output end D1 connects a reverse amplification circuit; Described see-saw circuit comprises amplifier A1, resistance R 2, resistance R 3, resistance R 4 and voltage output end D3, the wherein in-phase input end of one end of resistance R 4 access amplifier A1, the other end ground connection of resistance R 4; One termination voltage output end D1 of resistance R 3, the other end of resistance R 3 is connected with one end of resistance R 2 and accesses the inverting input of amplifier A1; The other end of resistance R 2 is connected with the outfan of amplifier A1; The outfan of amplifier A1 is as voltage output end D3, output-5V voltage; Described voltage stabilizing chip 1117-3.3V outfan is connected with one end of the parallel circuit of electrochemical capacitor C5, leaded multilayer ceramic capacitor C6 composition and as voltage output end D2, exports 3.3V voltage; The other end of the parallel circuit of electrochemical capacitor C5, leaded multilayer ceramic capacitor C6 composition is connected with the other end of described lithium battery parallel circuit.
7. a kind of portable mobile wireless vital sign monitor according to claim 1, it is characterized in that: the I/O mouth of data line ports, control line port and the described single chip control module of described LCD display module is connected, described LCD display shows the sign data of user.
8. a kind of portable mobile wireless vital sign monitor according to claim 1, is characterized in that: described terminal coordinator and described master coordinator all adopt the radio frequency chip CC2530 that supports Zigbee protocol.
9. a kind of portable mobile wireless vital sign monitor according to claim 8, it is characterized in that: described terminal coordinator is connected with the asynchronous serial communication interface of described single chip control module, communicate by Transistor-Transistor Logic level and described single chip control module, be transmit port RX and the receiving port TX of the asynchronous serial communication of described terminal coordinator, be connected with asynchronous serial communication receiving port and the transmit port of described single chip control module respectively, the voltage input end D19 input 3.3V voltage of described terminal coordinator is as chip CC2530 working power.
10. a kind of portable mobile wireless vital sign monitor according to claim 8, is characterized in that: the asynchronous communication transmit port RX of described master coordinator is connected with interface convertor PL2303 with receiving port TX; Be converted into USB interface by described interface convertor PL2303, the port UD+ of described interface convertor PL2303 and port UD-are connected in the USB interface of described computer, realize the asynchronous serial communication of described master coordinator and described computer.
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