CN205667544U - Based on AVR and the pulse monitoring device being wirelessly transferred - Google Patents

Abstract

The utility model discloses based on AVR and the pulse monitoring device that is wirelessly transferred, including: pulse collection module, pulse is monitored in real time by pulse transducer；Signal processing module, is filtered pulse signal, amplifies and input controller after Shape correction；Controller, for will input display module and be uploaded to PC after pulse data Treatment Analysis；Display module, for the pulse data of display controller input；Wireless transmitter module and wireless receiving module, for realizing the wireless telecommunications between controller and PC；PC, for showing pulse signal, record, store and processing.It is high that this utility model pulse monitoring device is capable of gathering pulse degree of accuracy, and wireless transmission distance is remote, is convenient for carrying, and energy resource consumption is few.

Description

Based on AVR and the pulse monitoring device being wirelessly transferred

Technical field

This utility model relates to a kind of pulse monitoring device, particularly relates to a kind of based on AVR with the pulse prison that is wirelessly transferred Survey device, belong to pulse signal acquisition technique field.

Background technology

Pulse is the physiological phenomenon that human body is common, is the external reflection of the important information such as heart and blood vessel state.It is not only There is provided physiological reference information for human body, and itself also can provide many valuable diagnostic messages.Use sensor test skill Art carries out quantitative analysis to pulse information, is one of the problem of at present both at home and abroad medical expert's common concern.

The doctor of the country such as Japan, the U.S., scholar devise some pulse conditions visitor in medical research, acupuncture research in recent years Instrument or device are traced in sight, and the major function of these instruments is to trace pulse condition waveform, are used as the work of clinical observation pulse condition change Tool.But these apparatus great majority are formed without product, the most do not see the report of extensive clinical practice.Wherein compare and have Representational instrument has the Novel noninvasive pulse clock of a kind of Acupuncture Clinical that United States Medical Doctor John.H. develops, day This one " pressure, pulse measuring instrument " of field mouth virtuous brightness invention, a Dai Tianwen man of virtue and ability for Japan devise one " local pressurizing type Arteries and veins device can be repaid ", Japan Colin company develop a kind of CBM 1 type C Pneumoniae pulse wave detector and Japan What Sony company once released a kind of utilizes three mikes in body as pulse wave detector of pulse wave sensing element etc..

The most generally using fixing specialized equipment to gather pulse signal, instrument is mainly by PCI concurrently or sequentially mouth Data are transmitted in the way of wired.Chinese patent CN 201675925 U discloses real-time pulse signal monitoring device, is with string The pulse signal detection device of row port communications transmission data；Chinese patent CN 201734700 U discloses one general serial The pulse signal detection device of bus transfer data.Wire signal transmission means signal is easily decayed and by electromagnetic interference, causes The data distortion gathered, and limit the activity space of measurand.Poor expandability and not easy-maintaining.The most general The best transmission distance of universal serial bus is 5 meters, and otherwise data transmission can instability.Wireless data acquisition and transmission technology can subtract Cable between few system connects, and has and is distributed advantages such as being limited flexibly, not by steric requirements, easy to carry, at various real-time prisons Survey, field operation and special applications are extensive.

In sum, wireless transmission method is that pulse monitoring device provides a kind of new solution.

Utility model content

The purpose of this utility model is to overcome deficiency of the prior art, it is provided that a kind of based on AVR be wirelessly transferred Pulse monitoring device, solves the technical problem that in prior art, the transmission of pulse collection poor accuracy is inconvenient.

For solving above-mentioned technical problem, this utility model be the technical scheme is that based on AVR and the arteries and veins being wirelessly transferred Fight monitoring device, including:

Pulse collection module, monitors pulse in real time by pulse transducer；

Signal processing module, is filtered pulse signal, amplifies and input controller after Shape correction；

Controller, for will input display module and be uploaded to PC after pulse data Treatment Analysis；

Display module, for the pulse data of display controller input；

Wireless transmitter module and wireless receiving module, for realizing the wireless telecommunications between controller and PC；

PC, for showing pulse signal, record, store and processing.

Further, described pulse transducer uses fingerstall positive displacement photoelectric sensor.

Further, described signal processing module includes filter circuit, amplifying circuit and waveform shaping circuit.

Further, described filter circuit is voltage controlled voltage source active second-order low-pass filter circuit, including two RC filters Wave circuit and in-phase proportion amplifying circuit.

Further, described amplifying circuit is in-phase amplification circuit.

Further, described controller uses the microcontroller of Atmega8515 series.

Further, described wireless transmitter module and wireless receiving module are CC1100 family chip.

Further, described display module is digitron display screen.

Compared with prior art, this utility model is reached to provide the benefit that:

1, use the information between radio receiving transmitting module transmission pulse collection controller and PC, eliminate monitored record PC Line between machine equipment and pulse transducer, makes the measurand can be freely movable, it is possible to collect monitored person movable Pulse signal under state, wireless transmission distance is moderate, low in energy consumption, capacity of resisting disturbance is strong, makes that pulse monitoring device volume is little, knot Structure is simple, easy to carry, has broad application prospects.

2, use digitron display screen to show, it is possible to achieve real-time monitored pulse data, facilitate user to observe and operate.

3, microprocessor control module uses the single-chip microcomputer of Atmega8515 series, has that disposal ability is strong, low-power consumption is special Point, it is possible to energy efficient.

4, pulse transducer gathers the filtered circuit of signal, amplifying circuit and waveform shaping circuit process, it is possible to identify Distinguishing small semaphore, improve the collection degree of accuracy of pulse, make relative error less, degree of accuracy is higher.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model；

Fig. 2 is the signal acquisition circuit figure of this utility model pulse collection module；

Fig. 3 is the filter circuit figure of this utility model signal processing module；

Fig. 4 is the amplification circuit diagram of this utility model signal processing module.

Detailed description of the invention

Below in conjunction with the accompanying drawings this utility model is further described.Following example are only used for this is clearly described The technical scheme of utility model, and protection domain of the present utility model can not be limited with this.

As it is shown in figure 1, based on AVR and the pulse monitoring device that is wirelessly transferred, including: pulse collection module, pass through pulse Pulse monitored in real time by sensor；Signal processing module, is filtered pulse signal, amplifies and input control after Shape correction Device；Controller, for will input display module and be uploaded to PC after pulse data Treatment Analysis；Display module, is used for showing The pulse data of controller input；Wireless transmitter module and wireless receiving module, for realizing the nothing between controller and PC Line communication；PC, for showing pulse signal, record, store and processing.

Preferably, described pulse transducer uses fingerstall positive displacement photoelectric sensor, and Acquisition Circuit figure is as in figure 2 it is shown, D2 Being infrared receiving diode (BPW83 type) and D1 is infrared-emitting diode (IR333 type), their operation wavelength is all 940 Nm, in referring to folder, put relative with infrared-emitting diode of infrared receiving diode obtains optimal directional property.Infrared Penetrating the electric current in diode the biggest, transmitting angle is the least, and the emissive porwer of generation is the biggest.In fig. 2, R5 selects 100 Ω to be base Considering in infrared receiving diode sensing infrared light sensitivity, R5 is excessive, less than normal by the electric current of infrared-emitting diode, BPW83 type infrared receiving diode cannot be distinguished from signal when pulse and pulseless.Otherwise, R0 is too small, and the electric current passed through is inclined Greatly, infrared receiving diode can not distinguish signal when having pulse and pulseless exactly.When infrared emission diode emitter Infrared light when shining directly on infrared receiving diode, the anti-phase input terminal potential of UB is more than in-phase input end current potential, Vi For " O ".When finger is in measurement position, it may appear that two kinds of situations: is the pulsus deletus phase.Although finger has blocked infrared emission two The infrared light that pole pipe is launched, but, owing to infrared receiving diode existing dark current, still there is the dark current of l μ A can cause Vi Current potential is slightly below 2.5 V.Two is to have the arteries and veins phase.When there being the pulse beated, blood vessels make finger light transmission be deteriorated, infrared receiver two pole Dark current in pipe reduces, and Vi current potential rises.Because infrared ray is black light, can not be known him intuitively when connecting with the mains Whether turn on, after R5, therefore connect a display lamp differentiate that he the most normally works.

Therefore the collection of pulse signal is indeed through infrared receiving diode, and when there being normal pulse pulsus deletus, dark current is micro- Weak change, then obtain through the amplification of UB.The signal collected is the voltage signal of 2 μ about V.

Pulse collection signal is sequentially connected in series after filter circuit, amplifying circuit and waveform shaping circuit carry out signal processing and inputs Controller.Filter circuit is as it is shown on figure 3, voltage controlled voltage source (VCVS) active second-order low-pass filter circuit.He is by two joint RC filters Wave circuit and in-phase proportion amplifying circuit composition, signal inputs from the in-phase end of amplifier, therefore the input impedance of wave filter is very big, its Output impedance is the least, and advantage is that circuit performance is more stable, and gain is easily dimmable.

Amplifying circuit as shown in Figure 4, after signal circuit after filtering, the most filtered by the high reject signal of power supply 50Hz Fall.He is from the 2 end inputs of C9, and signal is then filtered by C9 again, and the dark current above left is filtered further.Amplifier OP07, R15 form an adjustable main circuit of amplification with R17.Can process to prevent amplification voltage from exceeding single-chip microcomputer + 5V voltage, provide 5V to be supply voltage the most only to amplifier OP07, when signal thus can be allowed to be enlarged over 5V, also only There is 5V.Signal after amplifying circuit has low and high level after filtering, and MCU system can be allowed to identify, but is not the most the most perfect Square wave, therefore by a waveform shaping circuit, he is made into a perfect square-wave signal.

Preferably, controller uses the microcontroller of Atmega8515 series.ATmega8515 is based on the AVR strengthened 8 CMOS microcontrollers of the low-power consumption of risc architecture.Due to instruction set and single clock cycle time for each instruction of its advanced person, The data throughput of ATmega8515 is up to 1 MIPS/MHz, has that disposal ability is strong, low-power consumption feature, it is possible to energy efficient.

Further, described wireless transmitter module and wireless receiving module are CC1100 family chip.Radio receiving transmitting module Using the CC1100 chip produced by ETC company, the feature of this chip is: CC1100 is the real monolithic of a kind of low cost UHF transceiver, designs for low-consumption wireless application.Main circuit to be set as the ISM(work 315,433,868 and 915MHz Industry, science and medical science) and SRD(short-range device) frequency band, it is also possible to it is readily provided as 300-348 MHz, 400-464 Other frequencies of MHz and 800-928 MHz.

Preferably, described display module is digitron display screen, it is possible to real-time monitored pulse data.

When not connecting PC by radio receiving transmitting module, pulse collection module, signal processing module, controller and display Module one follow-on Portable pulse monitoring device of composition, can carry with, real-time display pulse number, and letter is little convenient. When connecting PC by radio receiving transmitting module, system constitutes a real-time pulse signal monitoring and record system.

The above is only preferred implementation of the present utility model, it is noted that for the common skill of the art For art personnel, on the premise of without departing from this utility model know-why, it is also possible to make some improvement and deformation, these change Enter and deform and also should be regarded as protection domain of the present utility model.

Claims (5)

1., based on AVR and the pulse monitoring device being wirelessly transferred, it is characterized in that, including:

Pulse collection module, monitors pulse in real time by pulse transducer；

Signal processing module, is filtered pulse signal, amplifies and input controller after Shape correction；

Controller, for will input display module and be uploaded to PC after pulse data Treatment Analysis；

Display module, for the pulse data of display controller input；

Wireless transmitter module and wireless receiving module, for realizing the wireless telecommunications between controller and PC；

PC, for showing pulse signal, record, store and processing；

Described pulse transducer uses fingerstall positive displacement photoelectric sensor, and positive displacement photoelectric sensor includes infrared receiving diode With infrared-emitting diode, infrared receiving diode and infrared-emitting diode are relative puts；

Described signal processing module includes filter circuit, amplifying circuit and waveform shaping circuit；

Described filter circuit is voltage controlled voltage source active second-order low-pass filter circuit, including two RC filter circuits with compared with Example amplifying circuit.

The most according to claim 1 based on AVR with the pulse monitoring device that is wirelessly transferred, it is characterized in that, described amplify electricity Road is in-phase amplification circuit.

The most according to claim 1 based on AVR with the pulse monitoring device that is wirelessly transferred, it is characterized in that, described controller Use the microcontroller of Atmega8515 series.

The most according to claim 1 based on AVR with the pulse monitoring device that is wirelessly transferred, it is characterized in that, described wireless Penetrate module and wireless receiving module is CC1100 family chip.

The most according to claim 1 based on AVR with the pulse monitoring device that is wirelessly transferred, it is characterized in that, described display mould Block is digitron display screen.