CN101099665A - Testing device for pulse condition and using method thereof - Google Patents
Testing device for pulse condition and using method thereof Download PDFInfo
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- CN101099665A CN101099665A CNA2007101205780A CN200710120578A CN101099665A CN 101099665 A CN101099665 A CN 101099665A CN A2007101205780 A CNA2007101205780 A CN A2007101205780A CN 200710120578 A CN200710120578 A CN 200710120578A CN 101099665 A CN101099665 A CN 101099665A
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Abstract
The present invention provides a pulse condition detection device. It includes sensor input module, data acquisition processing module and auxiliary function module. It also includes a analog signal regulation module. Said analog signal regulation module is used for regulating the analog signal obtained from sensor input module and making it be converted into the signal suitable to making A/D conversion, and extracting DC component for detecting pulse-feeling pressure from the described analog signal. The above-mentioned sensor input module and analog signal regulation module can implement bidirectional data connection, and said data acquisition module is connected with said analog signal regulation module and auxiliary function module. Said invention can effectively make pulse condition signal acquisition.
Description
Technical field
The pulse condition that the present invention relates in the traditional Chinese medical science field detects particularly a kind of pulse condition detection device and using method thereof.
Background technology
Chinese medical is seized of consequence in world's medical system, pulse wave spectrum is learned and taken the course of its own at medical domain, establishes one's own system, and the history in more than 2,000 year is arranged.Feeling the pulse is the conventional means of tcm diagnosis, and has accumulated rich experience, becomes representational very precious legacy in the traditional Chinese medical science.
Pulse condition is meant when the doctor feels the pulse, the image that beat pulse should refer to.Its concentrated expression the depth of arteries and veins position, to speed, the rhythm and pace of moving things of number evenly, the power of the size of shape and length, strength, and whether the oncoming force of pulse fluent or the like.The task of pulse-taking is exactly the variation of position, number, shape, gesture and its character by the examination pulse, with the situation of the position, character and the prosperity and decline of body good and evil that reach the identification disease.
People carry out the history of research existing decades of Chinese medicine pulse objective detection, the 1950's, the Chinese scholar peach blossom face of a beauty was introduced the lever sphygmometer research of pulse wave spectrum first, from the seventies in 20th century so far, research worker has been developed miscellaneous pick off and has been gathered and write down pulse signal, their ultimate principle all is to utilize pick off to replace the feeling the pulse of traditional Chinese medical science finger to extract the Partial Feature information of Chinese medicine pulse, and convert thereof into the signal of telecommunication, gather then and handle.
In numerous pick offs, several classes below main the existence:
1, electro-optical pickoff
The photoplethaysmography method is used for measuring pulse wave (being included in the pulse wave of oscillographic method blood pressure measurement), and its principle is to utilize photosignal to measure the volumetrical variation of pulse.When blood volume in the blood vessel changed, tissue changed to the degree of absorption of light is corresponding, utilizes electro-optical pickoff can measure this variation, and this variation reflects the basic parameter situation (comprising the change of frequency, amplitude, pulse wave shape) of blood pulses.
When adopting electro-optical pickoff to carry out the pulse condition detection, light emitting diode and optical transistor are placed on the both sides (transmission beam method) of tissue respectively, or the same side (bounce technique), when the blood flow in the tested place blood vessel changes, Zu Zhi light transmittance and reflectance change thereupon herein, and the light variation that optical transistor just can cause this moment converts the corresponding signal of telecommunication to.
It is 92113134.8 that a kind of typical case of electro-optical pickoff uses as the patent No., and name is called the Chinese patent of " electropulsograph ".This patent is used combined type pressure probe, obtains pulse condition information by electro-optical pickoff, but it has bigger frame for movement design.
2, solid-state piezoresistance sensor
Solid-state piezoresistance sensor has multiple implementation, and adopting the solid-state piezoresistance sensor of polyvinylidene fluoride (PVDF) material is comparatively popular now a kind of solid-state piezoresistance sensor.Compare with the PZT piezoelectric ceramics, the piezoelectric constant of polyvinylidene fluoride material is higher 10～20 times than PZT piezoelectric ceramics, and density has only its 1/4.Polyvinylidene fluoride has very high intensity, and (0.1～10Mhz), material is thin and soft, and good time and temperature stability are arranged with very wide frequency response.
The semiconductor pressure resistance pick off that adopts solid-state piezoresistance sensor to make is the compound sensor of a multilayer film laminated structure as thin as a wafer, be diaphragm shape or fingerstall shape, during touch finger is put thereon, pulsation and static pressure signal can be provided simultaneously, and the signal processing amplifying device in the pick off can amplify pulse condition and static pressure taking pulse lightly, moderately and heavily signal respectively.The standing part of this pick off can be taked the wrister mode, or glove, fingerstall mode.
It is 86107766 that a kind of typical case of solid-state piezoresistance sensor uses as the patent No., name is called the Chinese patent of " Chinese medicine pulse checkout gear ", just used PVDF resistance pressure type pick off in this patent, but it still have very complicated measuring mechanism and huge volume.
3, the other types pick off
For example light probe sensor has also appearred in actual applications, the pick off of other types such as ultrasonic type pick off.
In above-mentioned numerous pick off, the solid-state piezoresistive transducer that utilizes the PVDF material to make has advantages such as volume is small and exquisite, convenience is integrated, sensitivity height, the technical characterstic of its detection method and characteristics and the feeling the pulse of traditional Chinese medical science finger is more close, its collection of illustrative plates that shows, writes down is easier to be that the traditional Chinese medical science is understood and acceptance, therefore its more people pay close attention to, purposes is more extensive.But also there are problems such as null offset voltage in this pick off, and these have all had influence on the repeatability and the accuracy of circuit design and test, and the diversity that how to solve pick off directly determines the performance of harvester.
In addition,, should on three positions of patient's wrist cun,guan,chi, detect Chinese medicine pulse simultaneously, just can obtain more comprehensively pulse condition information according to the traditional habit of the traditional Chinese medical science.Therefore, the Chinese medicine pulse checkout gear that need detect simultaneously with CUN, three pulse image sensors of GUAN spot and chi portion just, such checkout gear is called three road Chinese medicine pulse checkout gears, sometimes be reduced to a pick off and on three positions of cun,guan,chi, detect successively, be called single track Chinese medicine pulse checkout gear.
Often use and lift pressing maneuver and seek the diagnosis pulse condition carrying out pulse-taking.Lift pressing maneuver and be three kinds of different finger power often using when feeling the pulse and move finger, to explore a kind of maneuver of pulse condition., be feeling the pulse lightly again or beat easily by on skin, crying act with light finger power; With referring to that heavily power by between muscles and bones, named and press, be taking the pulse heavily again or refetch; Finger power is gently heavy, also can be also gently also heavy, seek with crying of asking of ins and outs.Have kind feel the pulse process prescription for " firmly will be when touching arteries and veins by gently gradually heavy, adopt feeling the pulse lightly, in get, three kinds of modes of taking the pulse heavily, the degree of depth that don't its arteries and veins is examined the speed of its arteries and veins again, knows the intensity of its arteries and veins, decides the attribute of its arteries and veins at last.", when visible pulse condition is diagnosed, the importance of feeling the pulse pressure.But in the present pulse condition collecting device, great majority are not monitored and quantitative control feeling the pulse pressure, when so well not embodying pulse-tracing collection, feeling the pulse lightly, in get, the characteristics separately of taking the pulse heavily, also give simultaneously judging on the pulse condition amplitude and brought certain difficulty.
Present numerous pulse condition detection devices all have very complex mechanical construction, and volume is very huge, moves very heavy.Data transfer mode is confined to wire transmission or copies by storage medium, thereby gives to use and brought inconvenience, and the use of these devices all is at single measurement simultaneously, can't accomplish real-time monitoring.And the human-machine interactive information of some device limits to very much, and the interface is very unfriendly, and some can only just can recognize the dependence test state after being uploaded to computer, and measurement brings very big inconvenience to pulse condition like this.In the patent No. is 92113134.8 Chinese patent " electropulsograph ", adopt compound transducer, carrying out pulse condition by photoelectric sensor detects, pressure transducer detects feeling the pulse pressure, but its structure has adopted the bench type structure, thereby complex structure and heaviness, there is not good man-machine interface, transfer of data inconvenience.And be the apparatus structure that a kind of automatic adjusting feeling the pulse pressure is provided during 200610009639.1 Chinese invention patent " is regulated the pulse condition detection device and the pulse condition feature extracting method of feeling the pulse pressure " automatically at number of patent application, realized the automatic adjusting of feeling the pulse pressure, feeling the pulse lightly in the time of can realizing pulse wave spectrum, in get, the taking the pulse heavily maneuver, provide information more accurately for analyzing pulse condition aspects such as " position, shape, gesture, numbers ".But this device detects pulse condition information by photoelectric sensor, detect feeling the pulse pressure by pressure transducer, the control step motor pressure automatic control function that realizes feeling the pulse, thereby requirement has extremely complex mechanical construction and heavy volume, be not easy to very much measure, and adopted three tunnel pick off modulate circuit in device, structure is too complicated.
Summary of the invention
Therefore, the objective of the invention is to overcome existing pulse condition detection device complex structure, bulky, awkward defective, detect that performance is comprehensive, simple in structure, the pulse condition detection device of good reproducibility thereby provide a kind of.
To achieve these goals, the invention provides a kind of pulse condition detection device, comprise pick off input module, digital sampling and processing and miscellaneous function module; Also comprise the analog signal conditioner module, described analog signal conditioner module is used for the analogue signal that obtains from described pick off input module is nursed one's health, it is converted to is fit to analog-to-digital signal, and from described analogue signal, extract the flip-flop that is used to detect feeling the pulse pressure; Wherein,
Described pick off input module is connected with described analog signal conditioner module; Described digital sampling and processing is connected with described analog signal conditioner module, miscellaneous function module.
In the technique scheme, also comprise data transmission module, described data transmission module is used to transmit received pulse profile data.
In the technique scheme, described pick off input module comprises three pulse image sensors and a pick off input interface, described pick off input interface is used for the pulse condition information that described three pulse image sensors are imported is done channel selecting, to realize the acquisition time to described pulse condition information.
Described pulse image sensor is a PVDF pressure resistance type pulse image sensor.
In the technique scheme, after the analog signal conditioner module obtains analogue signal about pulse condition information from described pick off input module, at first described analogue signal being done elementary difference amplifies, from elementary difference result amplified, extract flip-flop then, then do secondary difference amplification, at last secondary difference result amplified and described flip-flop are carried out the voltage adjustment respectively according to described elementary difference result amplified and described flip-flop.
In the technique scheme, described digital sampling and processing is used for described analogue signal is done analog digital conversion.
In the technique scheme, described digital sampling and processing is also to doing digital filtering and/or data compression step through the digital signal after the analog digital conversion.
In the technique scheme, described miscellaneous function module comprises Man Machine Interface, feeling the pulse pressure detecting and control unit and ambient temperature and humidity measuring unit.
Described Man Machine Interface comprises keyboard input block, liquid crystal display and buzzer control unit.
In the technique scheme, described data transmission module adopts the mode of wireless transmission method or wire transmission mode or storage medium copy.
A kind of pulse condition detection device using method may further comprise the steps:
Step 1), pulse condition detection device is done initialization operation;
Step 2), receive the analogue signal that includes pulse condition information, and described analogue signal is nursed one's health from the pick off of pulse condition detection device;
Step 3), to doing analog digital conversion through the analogue signal of conditioning, and the real-time pulse profile data in the acquisition process digital signal;
Step 4), the data of being gathered are done real time data processing, and transmit by cable network or wireless network or storage medium.
In the technique scheme, described initialization operation comprises:
Step 1-1), be that described pulse condition detection device is set and the relevant ambient parameter of pulse condition detection;
Step 1-2), be described pulse condition detection device initialization system function;
Step 1-3), the testing environment of initialization pulse condition detection device.
In the technique scheme, described real time data processing comprises digital filtering and data compression.
The invention has the advantages that:
1, pulse condition detection device of the present invention has been realized synchronous acquisition to three different parts pulse condition informations of cun,guan,chi by a plurality of pick offs, can better describe pulse condition feature to be measured, for back-end analysis.
2, the present invention effectively extracts, amplifies by the signal of analog signal conditioner module to pick off output, simultaneously signal is adjusted in the scope that is fit to the AD converter collection, can gather pulse signal most effectively, eliminate the influence of sensor zero point drift.
3, the present invention extracts the flip-flop in the sensor output signal, by can judge the size of current feeling the pulse pressure to its analysis, therefore can carry out corresponding control to feeling the pulse pressure size, obtaining a stable gaging pressure, thereby obtain a specific measurement environment.
4, the present invention has constituted Man Machine Interface by the demonstration of a plurality of key combination and liquid crystal display screen, can realize the setting of measurement parameter and the selection of function by man machine interface, can recognize the state that system is current from LCD screen simultaneously.
5, adopted wireless network as communication modes among the present invention, can make terminal have independent, light, small and exquisite, advantage such as can carry, be applicable to various measurement demand.
6, pulse condition detection device of the present invention has adopted such as using analog switch control power supply to supply with, and a passage of multiplexer is set to low power dissipation design such as zero input, makes the present invention have advantage low in energy consumption.
7, the present invention extracts the information of feeling the pulse pressure from pulse signal, has compared with prior art simplified circuit structure, and has realized the shared cover modulate circuit of multiple sensor by the multiplexed method of circuit, has simplified circuit system of the present invention.
Description of drawings
Below, describe embodiments of the invention in conjunction with the accompanying drawings in detail, wherein:
Fig. 1 is the system block diagram of pulse condition detection device of the present invention;
Fig. 2 is the circuit theory diagrams of pick off input module;
Fig. 3 is the sketch map of signal condition process;
Fig. 4 is the schematic diagram of analog signal conditioner circuit;
Fig. 5 is data acquisition and processing schematic block diagram;
Fig. 6 is the wireless network architecture sketch map;
Fig. 7 is the circuit theory diagrams of power supply supplying module;
Fig. 8 is a miscellaneous function functions of modules block diagram;
Fig. 9 is the flow chart of the using method of pulse condition detection device.
The specific embodiment
The present invention will be further described below in conjunction with the drawings and specific embodiments.
Fig. 1 is a kind of preferred forms of pulse condition detection device of the present invention, and it comprises pick off input module 101, analog signal conditioner module 102, digital sampling and processing 103, data transmission module 104, power supply supplying module 105 and miscellaneous function module 106.Wherein, power supply supplying module 105 is connected with pick off input module 101, analog signal conditioner module 102, digital sampling and processing 103, data transmission module 104, miscellaneous function module 106 respectively; Pick off input module 101 also is connected with analog signal conditioner module 102; Digital sampling and processing 103 also is connected with analog signal conditioner module 102, data transmission module 104, miscellaneous function module 106.
The effect of pick off input module 101 is to gather the human body pulse profile data, and this module is made up of three pulse image sensors and a pick off input interface.Three pulse image sensors are respectively applied for the pulse profile data of gathering three positions of cun,guan,chi, and they are connected with the pick off input interface.Fig. 2 is the circuit theory diagrams of pick off input module 101, and as can be seen from the figure, the pick off input module can be realized by three pulse image sensors 201 and a multiplexer 202.After three road received signals of pulse image sensor enter multiplexer 202, realize that by 202 pairs three road signals of multiplexer passage switches, and is beneficial to the acquisition time of 103 pairs three road pulse signals of digital sampling and processing of rear end.Last passage of above-mentioned multiplexer 202 can be arranged to zero input state, so in use can be by passage being switched to the power consumption that last passage reduces the simulation part.The pulse image sensor that is adopted in this module can have multiple implementation, can adopt PVDF pressure resistance type pulse image sensor in the present embodiment, is fixed on the pulse condition collecting device with the feeling the pulse pressure control mechanism, forms pulse condition information and gathers front end.The relevant apparatus that feeling the pulse pressure when this pulse condition information collection front end generally also has pulse-tracing collection is controlled.In one embodiment, pulse condition information is gathered front end and is comprised an inflation wrister, installed inside at this inflation wrister has PVDF pressure resistance type pulse image sensor, on the inflation wrister, electromagnetic valve and air pump are installed also, under the control of electromagnetic valve and air pump, can realize inflation and venting action, thereby finish control feeling the pulse pressure to the inflation wrister.Those skilled in the art is understood that, the implementation of pulse condition information collection front end is not limited to the implementation described in the foregoing description, and gather the content that the realization of front end neither the application will illustrate for pulse condition information, therefore, only do introductory brief description herein.
The effect of analog signal conditioner module 102 is that the analogue signal of pick off input is nursed one's health, and makes it convert the signal that is suitable for back segment AD conversion to, extracts flip-flop simultaneously from signal, the detection of the pressure that is used to feel the pulse.
In preamble, mention, in the present embodiment, the pick off that is adopted is a PVDF pressure resistance type pulse image sensor, this pick off can produce the millivolt voltage gradation output signal that be proportional to input pressure by voltage or current drives, but also can exist one-25mV to a drift voltage the between+25mV simultaneously.When gathering pulse condition information, can regard the stack of a flip-flop and a small and weak time varying signal as by the analogue signal of pulse image sensor output, small and weak time varying signal wherein is exactly a pulse condition information to be measured, therefore must carry out processing and amplifying to it, also to eliminate the influence of flip-flop simultaneously, just become the work that must do so carry out signal condition, the quality of conditioning simultaneously directly influences whole structure.
Fig. 3 illustrates the process of the analog signal conditioner in the present embodiment, as can be seen from the figure, after obtaining analogue signal from pick off input module 101, analogue signal is at first carried out primary difference and is amplified 301, amplify extraction flip-flop 302 result from elementary difference, do secondary difference amplification 303 according to flip-flop and elementary difference amplification result then, at last secondary difference is amplified result and flip-flop and carry out voltage adjustment 304 respectively.
According to above-mentioned analog signal conditioner process, analog signal conditioner module 102 can realize by an analog signal conditioner circuit in the present embodiment.As shown in Figure 4, the analog signal conditioner circuit is made up of two instrument amplifiers, a sign-changing amplifier, adder, three road integrators and a multiplexer and a voltage stabilizing benchmark, realized differential signal input, amplify, go direct current, and the function that the flip-flop in the signal is extracted.Below in conjunction with Fig. 4, the operation that will finish analog signal conditioner circuit various piece in the conditioning process of analogue signal elaborates.
Behind the pick off input module 101 input analog difference signals by front end, the amplification that first instrument amplifier 401 by high order end among Fig. 4 is realized analog difference signal, signal after will amplifying then is divided into two-way to be handled respectively, wherein lead up to the sign-changing amplifier 402 of a 1:1, input second instrument amplifier 403, the difference integration that then realize three tunnel different analogue signals by multiplexer 404 and integrator 405 on another road, resulting result is the flip-flop in the signal behind the integration, and resulting flip-flop is sent to respectively on second instrument amplifier and the adder 406; Do the difference processing and amplifying through the analog difference signal of the resulting pulse condition of 1:1 sign-changing amplifier and the flip-flop of integration gained by the second instrument amplifier, thereby realize the amplification of the analog difference signal of pulse condition, remove the wherein influence of flip-flop simultaneously, to obtain pulse condition waveform preferably; Voltage stabilizing benchmark 407 is connected with adder with the second instrument amplifier respectively, voltage stabilizing benchmark and second instrument amplifier purpose of connecting are to be the analog difference signal that removes the pulse condition behind the direct current known flip-flop that superposeed, be used to guarantee that the signal of exporting is in the voltage range of rear end AD collection, voltage stabilizing benchmark and adder purpose of connecting are when making flip-flop that integration obtains by adder, a stackable known flip-flop is in rear end AD with the signal after guaranteeing to handle and gathers in the voltage range.
The effect of digital sampling and processing 103 is that the analogue signal after the conditioning is carried out modulus (AD) conversion, and carries out certain digital processing.As shown in Figure 5, in the present embodiment, digital sampling and processing 103 has mainly been finished the function that comprises AD conversion 501, digital filtering 502 and data compression 503.Digital sampling and processing 103 can pass through a multipoint control unit (MCU, Micro Controller Unit) realizes, multipoint control unit is also referred to as one chip microcomputer in the art, it is that the CPU of computer, RAM, ROM, timing number device and multiple I/O interface are integrated on a slice chip, form the computer of chip-scale, for doing various combination control in different application scenarios.
The AD conversion is to realize that by the AD converter of MCU inside MCU contains inside one 10 the AD converter that compares one by one.Know that by analysis the AD converter in the MCU can satisfy the requirement that system data is gathered to pulse condition information.
Digital filtering and data compression all can realize by MCU being done software programming.Data after digital filtering is changed AD are carried out preliminary treatment, are used to eliminate the influence of obvious errors, and wherein, the preliminary treatment that finish comprises smothing filtering (going different unsteady average window) etc.
It mainly is volume by the packed data occupancy to bandwidth when reducing the Back end data transmission that data are carried out data compression.Data compression has multiple implementation, through comparing to the analysis of pulse profile data and to analysis, the practice of multiple compression algorithm, has selected data extruding algorithm to realize the lossless compress of pulse profile data in the present embodiment.But those of ordinary skill in the art should be appreciated that and adopts other data compression algorithm also to can be applicable among the present invention.
Above, as a kind of preferred forms, digital sampling and processing 103 has comprised the multinomial function of AD conversion, digital filtering and data compression, but in other embodiments, according to actual needs, also can economize other or two functions removing outside the AD conversion.
Fig. 6 is the sketch map of wireless network, and as can be seen from the figure, by wireless transmission, pulse condition detection device of the present invention can be data upload to PC, and then realizes data sharing on Ethernet, uses for tap/dip deep into.Simultaneously can also form wireless sensor network,, realize the specifically monitored application of Denging to carry out processing such as data fusion, self-organizing network, collaborative work by a plurality of terminals and route.
In the present embodiment,, but same with wireless transmission method as best implementation, also can adopt traditional wire transmission or the mode by the storage medium copy, or above-mentioned multiple transmission means is used in combination.
The effect of power supply supplying module 105 is that control is supplied with the power supply of each module of whole system, reduces the power consumption of system simultaneously as far as possible.Fig. 7 is power supply supplying module 105 circuit theory diagrams in one embodiment, as can be seen from the figure, power supply supplying module 105 can provide the modular power source of following kind: LcdVCC (power supply of LCDs), TemHumVCC (power supply of Temperature Humidity Sensor), PumpVCC (power supply of air pump), AnalogVCC (artificial circuit part power supply), SensorVCC (pulse image sensor power supply).Power supply supplying module 105 is controlled multiway analog switch 701 to be implemented to the break-make of each modular power source by power control signal.Wherein, need to realize voltage transitions for modular power source AnalogVCC (artificial circuit part power supply) by voltage transitions chip 702, realize the voltage transitions by the voltage transitions chip except needs for modular power source SensorVCC (pulse image sensor power supply), also need to carry out voltage stabilizing and handle by voltage stabilizing chip 703.The multiway analog switch 701 that is adopted in the power supply supplying module 105 can be used for controlling the supply of power supply, when system does not work, can close the power supply supply of correlation module by multiway analog switch 701, to reach the purpose that reduces power consumption.
The effect of miscellaneous function module 106 is sophisticated systems functions, for the use and the control of system are offered help.Fig. 8 is the functional block diagram to miscellaneous function module 106, and as seen from the figure, miscellaneous function module 106 comprises Man Machine Interface 801, feeling the pulse pressure detecting and control unit 802,803 3 parts of ambient temperature and humidity measuring unit.
Man Machine Interface has mainly comprised keyboard input block 8011, liquid crystal display 8012 and 8,013 three parts of buzzer control unit.Keyboard input makes and concrete function that the user can selective system and import concrete measurement parameter makes things convenient for the user to set relevant the setting.System can be by the correlation behavior of liquid crystal display systems, and the summary of pulse condition waveform shows, makes the user better grasp system mode, makes things convenient for the user to measure.By buzzer, can realize the warning function that some are specific.
The effect of feeling the pulse pressure detecting and control unit 802 is to the pulse profile data harvester of pick off input module 101 ends the feel the pulse detection of pressure and the control of feeling the pulse pressure size.Fig. 8 has represented a kind of embodiment of feeling the pulse pressure detecting and control unit, the embodiment of cited pulse condition information collection front end has dependency in this embodiment and the present embodiment, and it comprises feeling the pulse pressure detecting module 8021, air pump control module 8022, solenoid control module 8023.Feeling the pulse pressure detecting module is done the AD conversion with the signal flip-flop that is extracted in the analog signal conditioner module 102, resulting result is exactly the feeling the pulse pressure that will detect, feeling the pulse pressure detecting module and air pump control module, the closed loop control of solenoid control module composition, the automatic control function of the pressure of can realizing feeling the pulse.The air pump control module can be carried out on-off control to the direct current air pump in the pick off input module 101, inflate action by giving an inflation wrister, thereby a constant gaging pressure is provided for the measurement of pulse condition information, like this by changing the numerical value of constant pressure, just can realize in the pulse condition measurement feeling the pulse lightly, in get, three kinds of different acquisition modes of taking the pulse heavily.The solenoid control module can be controlled the switch of electromagnetic valve, realizes inflating the inflation and the venting action of wrister with this.The feeling the pulse pressure detecting cooperate certain software algorithm with control unit 1062, wrister is inflated automatically, is exitted in the time of can realizing measuring, and reaches certain gaging pressure, and in measuring process, keep constant, make the measurement more convenient.The automatic judgement of feeling the pulse pressure, and the automatic selection of feeling the pulse pressure detecting passage can make system have usability, better repeatability and accuracy more easily.
Ambient temperature and humidity is measured 803 and can be realized by the humiture integrated transducer of system, can carry out the collection of temperature, humidity to the environment at system place, and inform the user by Man Machine Interface, and the user is had a better understanding to environment.
On the basis that pulse condition detection device of the present invention is described,, the using method of this device is done related description with reference to figure 9:
Step 00), pulse condition detection device is carried out initialization operation, this initialization procedure is mainly used in the setting measurement environment, comprises the acquisition channel of setting feeling the pulse pressure, feeling the pulse pressure size, terminal work mode etc.Mention in background technology part, when pulse-tracing collection according to the big I of feeling the pulse pressure be divided into feeling the pulse lightly, in get, taking the pulse heavily, therefore, should be pulse condition detection device according to actual needs and set different feeling the pulse pressure sizes.In addition, when feeling the pulse, need carry out, therefore also need when initialization, set the acquisition channel of feeling the pulse pressure at three positions of wrist cun,guan,chi.
Initialization operation specifically may further comprise the steps:
Step 01), set the ambient parameter relevant with measurement, described ambient parameter comprises the size and the acquisition channel of the pressure of feeling the pulse;
This step is by to the setting of parameter, and the functions such as automatic control of the pressure of can realizing feeling the pulse are for the measurement of pulse condition information provides an optimum environment.
Step 02), set the systemic-function of pulse condition detection device;
Can know from above stated specification pulse condition detection device, this device has multiple function, do not have compatibility between the partial function wherein, for example, the single channel of pulse condition information is measured and the multi-channel synchronous of pulse condition information does not just have compatibility between measuring, and whether some function also can be adopted by user's decision, for example the user can select whether to adopt synchronous Presentation Function, therefore, in this step, will set these selectable systemic-functions.
Step 03), at the beginning change testing environment, comprise program initialization and pulse condition information is gathered the startup that air pump in the front end and electromagnetic valve are controlled relevant apparatus, make system reach default measurement environment.Wherein, electromagnetic valve is used to control that pulse condition information gathers front end charges and discharge the air cock operation, and the direct current air pump can realize that then pulse condition information gathers the inflation action of front end.
Step 10), collection pulse signal are nursed one's health the pulse signal of being received;
In this step, the analogue signal of collected pulse signal for obtaining from pick off, the process that the simulation pulse signal is nursed one's health has described in detail in the explanation to analog signal conditioner module 102, no longer does duplicate explanation herein.Pulse signal is fit to analog-to-digital analogue signal through becoming after nursing one's health.
Step 20), to doing analog digital conversion through the pulse signal of conditioning, and according in the initialization procedure to the setting of pulse condition detection device, acquisition process pulse condition information in real time;
Mention in initialization procedure, when the function setting of pulse condition detection device, the user can select pulse condition information is done single channel measurement or multi-channel synchronous measurement, therefore, in this step, according to user's setting, single channel or multichannel synchronousing collection pulse condition information.In this step, will through the conditioning signal be converted into digital signal by AD converter after, collect again in the microprocessor of MCU.
Step 30), the data of being gathered are done real time data processing, and transmit by wireless network, the specific implementation step is as follows:
Step 31), the data of gathering are carried out digital filtering;
Because can there be certain error in the data that collect unavoidably, wherein also can also have some errors clearly, therefore need take out some fairly obvious measurement error by digital filtering.Removal operation to wrong data helps the follow-up wireless transmission and the date processing of server end.
Step 32), carry out data compression;
Because system need be to the real-time collection of pulse profile data, and will pass through the wireless network transmissions data, therefore well carry out very necessity that data compression just becomes.
Step 33), carry out the wireless transmission of data.
Exactly the data of handling well are simply shown by Man Machine Interface at last, simultaneously data are uploaded onto the server by wireless network, for further processing.
Claims (13)
1, a kind of pulse condition detection device comprises pick off input module (101), digital sampling and processing (103) and miscellaneous function module (106); It is characterized in that, also comprise analog signal conditioner module (102), described analog signal conditioner module (102) is used for the analogue signal that obtains from described pick off input module (101) is nursed one's health, it is converted to is fit to analog-to-digital signal, and from described analogue signal, extract the flip-flop that is used to detect feeling the pulse pressure; Wherein,
Described pick off input module (101) is connected with described analog signal conditioner module (102); Described digital sampling and processing (103) is connected with described analog signal conditioner module (102), miscellaneous function module (106).
2, pulse condition detection device according to claim 1 is characterized in that, also comprises data transmission module (104), and described data transmission module (104) is used to transmit received pulse profile data.
3, pulse condition detection device according to claim 1 and 2, it is characterized in that, described pick off input module (101) comprises three pulse image sensors and a pick off input interface, described pick off input interface is used for the pulse condition information that described three pulse image sensors are imported is done channel selecting, to realize the acquisition time to described pulse condition information.
4, pulse condition detection device according to claim 3 is characterized in that, described pulse image sensor is a PVDF pressure resistance type pulse image sensor.
5, pulse condition detection device according to claim 1 and 2, it is characterized in that, after analog signal conditioner module (102) obtains analogue signal about pulse condition information from described pick off input module (101), at first described analogue signal being done elementary difference amplifies, from elementary difference result amplified, extract flip-flop then, then do secondary difference amplification, at last secondary difference result amplified and described flip-flop are carried out the voltage adjustment respectively according to described elementary difference result amplified and described flip-flop.
6, pulse condition detection device according to claim 1 and 2 is characterized in that, described digital sampling and processing (103) is used for described analogue signal is done analog digital conversion.
7, pulse condition detection device according to claim 1 and 2 is characterized in that, described digital sampling and processing (103) is also to doing digital filtering and/or data compression step through the digital signal after the analog digital conversion.
8, pulse condition detection device according to claim 1 and 2 is characterized in that, described miscellaneous function module (106) comprises Man Machine Interface (801), feeling the pulse pressure detecting and control unit (802) and ambient temperature and humidity measuring unit (803).
9, pulse condition detection device according to claim 8 is characterized in that, described Man Machine Interface (801) comprises keyboard input block (8011), liquid crystal display (8012) and buzzer control unit (8013).
10, pulse condition detection device according to claim 2 is characterized in that, described data transmission module (104) adopts the mode of wireless transmission method or wire transmission mode or storage medium copy.
11, a kind of pulse condition detection device using method that is applied to pulse condition detection device described in the claim 1 may further comprise the steps:
Step 1), pulse condition detection device is done initialization operation;
Step 2), receive the analogue signal that includes pulse condition information, and described analogue signal is nursed one's health from the pick off of pulse condition detection device;
Step 3), to doing analog digital conversion through the analogue signal of conditioning, and the real-time pulse profile data in the acquisition process digital signal;
Step 4), the data of being gathered are done real time data processing, and transmit by cable network or wireless network or storage medium.
12, according to right 11 described pulse condition detection device usings method, it is characterized in that described initialization operation comprises:
Step 1-1), be that described pulse condition detection device is set and the relevant ambient parameter of pulse condition detection;
Step 1-2), be described pulse condition detection device initialization system function;
Step 1-3), the testing environment of initialization pulse condition detection device.
13, according to right 11 described pulse condition detection device usings method, it is characterized in that described real time data processing comprises digital filtering and data compression.
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