CN102551684A - Pulse detecting system - Google Patents
Pulse detecting system Download PDFInfo
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- CN102551684A CN102551684A CN2010106203764A CN201010620376A CN102551684A CN 102551684 A CN102551684 A CN 102551684A CN 2010106203764 A CN2010106203764 A CN 2010106203764A CN 201010620376 A CN201010620376 A CN 201010620376A CN 102551684 A CN102551684 A CN 102551684A
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Abstract
The invention discloses a pulse detecting system which comprises a pulse acquisition device for outputting pulse analog signals, an analog signal conditioning module for conditioning the pulse analog signals and a processor. The analog signal conditioning module is respectively electrically connected with the pulse acquisition device and the processor; the pulse acquisition device comprises three paths of pulse sensors and three paths of pressing devices; the pressing devices are connected with the pulse sensors in one-to-one correspondence; and the controller is used for outputting pulse detecting signals according to the output signals of the analog signal conditioning module and controlling the control signals of the three paths of pressing devices. The pulse detecting system has the advantages of comprehensive detecting performance, simple structure and good repeatability.
Description
Technical field
The present invention relates to pulse condition detection technique field, particularly relate to the method for using of a kind of pulse manifestation testing system and this system.
Background technology
To be the Chinese physician press three positions of cun,guan,chi, patient's the area on the wrist over the radial artery where the pulse is felt for diagnosis radial artery place with finger to the common way of the pulse-taking of the traditional Chinese medical science, through finger apply floating, in, different pressures such as heavy experiences the variation of patient's pulse wave.Corresponding to floating, in, heavy equal pressure and the pulse wave of a series of position that comprises pulse, power, trend, shape, width and rhythm and pace of moving things of producing or the like information, we are referred to as pulse condition.From pulse condition information, the doctor can know that pulse is floating or heavy, be real or void, be greatly or little, be soon or slow.Through these information, the doctor just can understand patient's physiological status, but this traditional Chinese medicine pulse has very big subjectivity; The process of diagnosis is difficult to reproduce, and is difficult to learn, and spends several years even could grasp decades.
In order to solve the shortcoming of traditional pulse wave spectrum, for many years, many research workers have made unremitting effort aspect the objectifying of pulse-taking.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; Basically 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 converts thereof into the signal of telecommunication, gathers then and handles.
In numerous pick offs, below main the existence several types:
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.
2, solid-state piezoresistive transducer
Solid-state piezoresistive transducer has multiple implementation; Adopting the solid-state piezoresistive transducer 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 very wide frequency response, and (0.1～10MHz), material is thin and soft, and good time and temperature stability are arranged.
The semiconductor pressure resistance pick off that adopts solid-state piezoresistive transducer to process is the compound transducer of a multilayer film laminated structure as thin as a wafer; Be diaphragm shape or fingerstall type; During touch finger is put above that; Pulsating force and static pressure signal can be provided simultaneously, the signal processing amplifying device in the pick off can amplify respectively pulse condition and static pressure floating, in, heavy signal.The standing part of this pick off can be taked the wrister mode, or glove, the fingerstall mode.
3, other types pick off
For example light probe sensor has also appearred in practical application, the pick off of other types such as ultrasonic type pick off.
The pulse image sensor of present numerous pulse condition collecting devices can't be controlled separately; Thereby influence the accuracy that pulse condition information is gathered; And said pulse condition collecting device all has very complex mechanical construction, and volume is very huge, moves very heavy; Data transfer mode is confined to wire transmission or copies through storage medium, thereby makes troubles to use.The use of these devices simultaneously all is to single measurement, can't accomplish real-time detection.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.
Summary of the invention
The object of the present invention is to provide a kind of pulse condition detection device, can't accurately control the shortcoming that more can't control separately thereby overcome existing pulse condition detection device feeling the pulse pressure.
A kind of pulse manifestation testing system for realizing that the object of the invention provides comprises the pulse condition collecting device that is used to export the pulse condition analogue signal, analog signal conditioner module and the processor that is used to nurse one's health this pulse condition analogue signal; This analog signal conditioner module electrically connects with this pulse condition collecting device and this processor respectively; This pulse condition collecting device comprises three road pulse image sensors and No. three pressue devices; Said pressue device and said pulse image sensor connect one to one; This processor is according to the output signal output pulse condition detection signal of this analog signal conditioner module and the control signal that is used to control said No. three pressue devices.
In one embodiment, each road of the said pressue device of said pulse manifestation testing system is included in motor slave unit and the motor that connects in order in the pressue device shell, and the other end of this motor slave unit is connected with the non-induction end of a said pulse image sensor; During this machine operation, this pulse image sensor and the interlock of this slave unit are done rectilinear motion along the longitudinal direction of this pressue device shell.
In one embodiment, this motor slave unit comprises whorl brace rod, moving guide rail, this pick off mount pad; This pick off mount pad, this moving guide rail, this whorl brace rod and this motor connect in this shell in order; The other end of this pick off mount pad connects with said a road corresponding pulse image sensor; This moving guide rail outer surface subtend is provided with two guide grooves that extend along this moving guide rail longitudinal direction, and two fixed screws pass this shell and stretch in the corresponding said guide groove; During this machine operation, said two fixed screws are done linear slide along said guide groove in said guide groove.
In one embodiment, this pulse condition collecting device also comprises support, and said each road pressue device is individually fixed on this support, spacing and adjustable positions between each road pressue device.
In one embodiment, wrister is set also on this support, this wrister and this pulse image sensor are positioned at the homonymy of this support, and the induction end of this wrister and this pulse image sensor in the same way.
In one embodiment, this analog signal conditioner module comprises three road pulse signal modulate circuits; Each road pulse signal modulate circuit receives this analogue signal of corresponding with it road pulse image sensor output; Elementary difference is amplified this analogue signal; From elementary difference result amplified, extract flip-flop then; Then carry out secondary difference according to said elementary difference result amplified and this flip-flop and amplify, at last secondary difference result amplified and this flip-flop are carried out the voltage adjustment respectively, conditioned signal and first direct current signal of exporting this analogue signal are to this processor.
In one embodiment; This each road pulse signal modulate circuit comprises first order amplifier, 1: 1 sign-changing amplifier, quick point device, integrator, second level amplifier, voltage stabilizing base modules and adder at a slow speed, and wherein this first order amplifier electrically connects this corresponding road pulse image sensor, this sign-changing amplifier, this quick point device, this integrator and this voltage stabilizing base modules at a slow speed; This first order amplifier receives the preset direct current signal of this analogue signal and the output of this voltage stabilizing base modules, exports first amplifying signal to this 1: 1 sign-changing amplifier, this quick point device and this integrator at a slow speed; The positive input of this sign-changing amplifier and this first order amplifier and this second level amplifier electrically connects, and receives this first amplifying signal, exports the positive input of second amplifying signal to this second level amplifier; The reverse input end of this quick point device and this first order amplifier and this second level amplifier electrically connects, and receives this first amplifying signal, exports the reverse input end of second direct current signal to this second level amplifier; This is integrator and this first order amplifier and the electric connection of this adder at a slow speed, receives this first amplifying signal, exports the 3rd direct current signal to this adder; This voltage stabilizing base modules and this first order amplifier, this second level amplifier and this adder electrically connect, and output should be preset direct current signal to this first order amplifier, this second level amplifier and this adder; This second level amplifier receives this second amplifying signal, this second direct current signal and should preset direct current signal, exports this conditioned signal to this processor; This adder receives the 3rd direct current signal and should preset direct current signal, exports this first direct current signal to this processor.
In one embodiment, this processor comprises AD modular converter, pre-processing module and data transmission port; This AD modular converter receives the output signal of this analog signal conditioner module and this output signal is carried out the AD conversion, and this pre-processing module is carried out pretreatment to the digital signal that AD conversion back obtains, and this data transmission port is transmitted said pretreated data.
In one embodiment, this pulse manifestation testing system also comprises the pressue device driving governor; This pressue device driving governor electrically connects with this pulse condition collecting device, this processor respectively; This processor is controlled each road of said No. three pressue devices respectively through this pressue device driving governor.
In one embodiment, this pulse manifestation testing system also comprises data transmission module, and this data transmission module is connected with this processor two-way communication.
In one embodiment, this pulse manifestation testing system also comprises human-computer interaction module, and this human-computer interaction module is connected with this processor two-way communication.
In one embodiment; This human-computer interaction module comprises keyboard input block, LCD MODULE, ambient temperature measurement, and processor is communicated by letter with the output interface of the input interface of the output interface of keyboard input block, LCD MODULE, ambient temperature measurement module respectively and is connected.
In one embodiment, this pulse manifestation testing system also comprises the power supply supplying module, and this power supply supplying module electrically connects with this pulse condition collecting device, this analog signal conditioner module and this processor respectively.
In one embodiment, this power supply supplying module comprises power transfer module and multiway analog switch, and wherein this power transfer module comprises the linear source of stable pressure of LDO, DCDC converter and regulated power supply.
In one embodiment, this pulse image sensor is a PVDF pressure resistance type pulse image sensor.
Beneficial effect of the present invention is: the pulse condition collecting device of pulse manifestation testing system disclosed by the invention comprises three road pulse image sensors, three positions of cun,guan,chi that can corresponding human body wrist.Pulse condition collecting device comprises No. three pressue devices; Corresponding one road pulse image sensor of each road pressue device; Can control each road pulse image sensor separately; Thereby be able to the feeling the pulse pressure at three positions of cun,guan,chi is adjusted respectively, help improving the accuracy of pulse condition information collection and the convenience of use.
Among the present invention among some embodiment the pulse signal modulate circuit comprise three road pulse signal modulate circuits, can handle three road pulse condition analogue signals simultaneously; Each road pulse signal modulate circuit more is provided with quick point device and integrator at a slow speed, is guaranteeing that conditioned signal more improves the speed of conditioning accurately under the prerequisite, helps pulse manifestation testing system to realize detecting in real time.
In addition; The solid-state piezoresistive transducer that pulse image sensor is processed for the PVDF material among some embodiment among the present invention; Because the solid-state piezoresistive transducer of PVDF has advantages such as advantages of small volume, convenient integrated, sensitivity height; The technical characterstic that its detection method and characteristics and traditional Chinese medical science finger are felt the pulse is more close, and it shows, collection of illustrative plates of record more is prone to understand and acceptance for the traditional Chinese medical science, has more promoted the convenience and the operability of pulse manifestation testing system.
Comprise data transmission module in the embodiment of the invention in the pulse manifestation testing system, data transfer mode is widened to wireless transmission, wire transmission or through the transmission of storage medium copy.
Pulse manifestation testing system provides the good man-machine interaction interface in the embodiment of the invention, the user through the keyboard input block can selective system concrete function and measurement parameter, through the correlation behavior and the pulse condition information of LCD MODULE display system.
Description of drawings
Below, specify embodiments of the invention in conjunction with accompanying drawing, wherein;
Fig. 1 is a pulse manifestation testing system disclosed by the invention structural representation in one embodiment;
Fig. 2 is a pulse condition collecting device disclosed by the invention structural representation in one embodiment;
Fig. 3 is a pressue device disclosed by the invention cross-sectional view in one embodiment;
Fig. 4 is an analog signal conditioner module disclosed by the invention structural representation in one embodiment;
Fig. 5 is a pulse manifestation testing system disclosed by the invention Detection & Controling feeling the pulse pressure sketch map in one embodiment;
Fig. 6 is a processor disclosed by the invention structural representation in one embodiment;
Fig. 7 is a data transmission architecture sketch map disclosed by the invention;
Fig. 8 be processor with human-computer interaction module in one embodiment be connected sketch map;
Fig. 9 is a power supply supplying module structural representation in one embodiment.
The specific embodiment
In order to make the object of the invention, technical scheme and advantage clearer,, the method for using of a kind of pulse condition detection device of the present invention and this checkout gear is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
To achieve these goals, the invention provides a kind of pulse condition detection device, comprise pulse condition collecting device, analog signal conditioner module, processor.
In some technical schemes, described pulse condition collecting device comprises first via pulse image sensor, the second road pulse image sensor, Third Road pulse image sensor, first via pressurization machinery, the second tunnel pressurization machinery, Third Road pressurization machinery.This pulse condition collecting device also comprises support in some specific embodiments.
In some technical schemes, described pulse image sensor is a PVDF pressure resistance type pulse image sensor.
In some technical schemes, described pressurization machinery comprises shell, direct current deceleration micro machine and vertical link; The non-induction end of described pulse image sensor links to each other through described vertical link with the moment output shaft of described little DC speed-reducing.In certain embodiments, described little DC speed-reducing is fixedly mounted on the inner bottom surface of described shell, and described outer shell outer wall is fixedly mounted on the inwall of described support.
In some technical schemes; Described analog signal conditioner module comprises first via pulse signal modulate circuit, the second road pulse signal modulate circuit and Third Road pulse signal modulate circuit, nurses one's health the output signal of first via pulse image sensor, the second road pulse image sensor and Third Road pulse image sensor respectively.Three signal output parts of first via pulse image sensor, the second road pulse image sensor and Third Road pulse image sensor are connected three inputs of three road pulse signal modulate circuits respectively, and six outfans of three road pulse signal modulate circuits connect six input end of analog signal of the analog-to-digital conversion module of described processor respectively.The Electric Machine Control port of the control circuit of described processor connects the control signal input of described pressue device driving governor, and the driving signal output part of described pressue device driving governor connects the power input of said direct current deceleration micro machine.
In some technical schemes, described data transmission module can adopt the combination in any of wireless transmission method or wire transmission mode or storage medium copy mode or above three kinds of modes.The data-out port of described processor connects the data input pin of described data transmission module.
In some technical schemes, described human-computer interaction module comprises keyboard input block, LCD MODULE and ambient temperature measurement module.The input of the man-machine interaction port of described processor connects the outfan of described keyboard input block and the outfan of ambient temperature measurement module, and the outfan of the man-machine interaction port of described processor connects the input of described LCD MODULE.
In some technical schemes, described power supply supplying module comprises power supply supplying module and power transfer module and power management module.The outfan of described power supply supplying module connects the power input of described pulse condition collecting device, the power input of pressue device driving governor, the power input of analog signal conditioner module, the power input of processor, the power input of data transmission module and the power input of human-computer interaction module respectively.
Three PVDF pressure resistance type pulse image sensors corresponding respectively three positions of cun,guan,chi of human body wrist; The output signal of pulse image sensor is input to the analog signal conditioner module and carries out signal condition when detecting pulse condition; Obtain being fit to analog-to-digital pulse condition analogue signal, also from analogue signal, extract the flip-flop pressure information of being felt the pulse in real time simultaneously.The pulse signal on each road is sent in the D/A converter module of processor; Processor is being controlled the sampling of D/A converter module to pulse signal; Analogue signal is changed into digital signal; And digital signal carried out processing such as digital filtering and compression, and again the result being stored in this locality through data transmission module or the real-time server end that is sent to stores, the Data Fusion through server end is presented at detected pulse condition information on the screen.Each road pressure information of feeling the pulse in real time is sent in the processor; Processor rotates according to feeling the pulse pressure information control direct current generator; The rotation meeting of direct current generator drives pulse image sensor through motor shaft with vertical link and moves up and down; Thereby can be provided in when detecting pulse condition required floating, in, feeling the pulse pressure such as heavy, the pressure that provides size is through the processor closed loop control.System also provides the good man-machine interaction port, the user through the keyboard input block can selective system concrete function and measurement parameter, the correlation behavior through the liquid crystal display systems display system and pulse condition information etc.
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is further specified.
Fig. 1 is a pulse manifestation testing system structural representation in one embodiment, is a kind of preferred embodiments of pulse manifestation testing system of the present invention shown in it.In this embodiment, pulse manifestation testing system comprises pulse condition collecting device 101, pressue device driving governor 102, analog signal conditioner module 103, processor 104, data transmission module 105, human-computer interaction module 106 and power supply supplying module 107.Pulse condition collecting device 101 is electrically connected with pressue device driving governor 102 and analog signal conditioner module 103 respectively; Processor 104 is electrically connected with pressue device driving governor 102, analog signal conditioner module 103,106 two-way communications are connected with human-computer interaction module with data transmission module 105; Power supply supplying module 107 is electrically connected with pulse condition collecting device 101, pressue device driving governor 102, analog signal conditioner module 103, processor 104, data transmission module 105 and human-computer interaction module 106 respectively.Wherein the effect of this data transmission module 105 is to provide more easily transmission means to obtain the pulse condition testing result for user, and the effect of this human-computer interaction module 106 is to provide more friendly human-computer interaction interface so that the operation of user.In certain embodiments, this pulse manifestation testing system does not comprise data transmission module 105 and human-computer interaction module 106.In certain embodiments, this processor 104 directly drives the action of said No. three pressue devices 1012, thereby saves the setting of pressue device driving governor 102, further reduces the volume of this pulse manifestation testing system.
In the embodiment shown in fig. 1, pulse condition collecting device 101 comprises three road pulse image sensors 1011, i.e. first via pulse image sensor, the second road pulse image sensor, Third Road pulse image sensor.Wherein pulse image sensor 1011 is a PVDF pressure resistance type pulse image sensor.Pulse condition collecting device 101 also comprises No. three pressue devices 1012, i.e. first via pressue device, No. the second pressue device and Third Road pressue device.Wherein pressue device 1012 is mechanical pressue device.Pulse image sensor 1011 is connected with pressue device 1012 one to one.Analog signal conditioner module 103 comprises three road pulse signal modulate circuits 1031; Be first via pulse signal modulate circuit, the second road pulse signal modulate circuit and Third Road pulse signal modulate circuit; Said three road pulse signal modulate circuits are electrically connected with three road pulse image sensors 1011 of pulse condition collecting device 101 one to one, receive the pulse condition analogue signal of pulse image sensor output.Each road pulse signal modulate circuit 1031 output one road AC signal and one road direct current signal to processor 104 of this analog signal conditioner module 103.Processor 104 receives 3 road AC signals and 3 road direct current signals; Output control signals to pressue device driving governor 102; Pressue device driving governor 102 outputs No. three pressue devices drive signal, control each road of No. three pressue devices of pulse condition collecting device respectively.The concrete structure of pulse condition collecting device 101, analog signal conditioner module 103, processor 104, data transmission module 105, human-computer interaction module 106 and power supply supplying module 107 will specifically describe hereinafter.
Fig. 2 is pulse condition collecting device 101 structural representation in one embodiment, and it is depicted as a kind of preferred embodiments of pulse condition collecting device 101 of the present invention.The effect of pulse condition collecting device 101 is to gather the human body pulse profile data under the different feeling the pulse pressure.As shown in Figure 2, pulse condition collecting device 101 comprises that three road pulse image sensors 1011, support 202, No. three pressue devices 1012, screw 204 and wrister 205 form.Wherein, support 202 is fixedly pressue device with the effect of screw 204, is convenient to pulse condition and measures; The effect of wrister 205 is to be convenient to pulse image sensor and gathers the pulse condition analogue signal.In other embodiments, this pulse condition collecting device 10 can only comprise three road pulse image sensors 1011 and No. three pressue devices 1012.
In embodiment illustrated in fig. 2, No. three pressue devices 1012 are fixed on the support 202 through screw 204, and the spacing of No. three pressue devices 1012 and position can manual adjustments, can adapt to the dissimilar arteries and veins position of different crowd like this.The non-induction end of three road pulse image sensors 1011 is separately fixed at an end of No. three pressue devices 1012, and pulse image sensor 1011 is positioned at a side of this support, and the other end of this pressue device 1012 is positioned at the opposite side of this support 202.Wrister 205 is fixed on the support 202, with these pulse image sensor 1011 homonymies and with the induction end of pulse image sensor 1011 in the same way.The induction end of pulse image sensor 1011 will be positioned at the inboard of wrister 205 like this; When measuring; Wrister 205 helps the induction end of three-way sensor 1011 to be close to the cun,guan,chi position of human body wrist, and wrister 205 makes pulse condition collecting device 101 be convenient to be fixed on the human body wrist position.Three road pulse image sensors 1011 are gathered the pulse profile data at three positions of cun,guan,chi respectively, and the feeling the pulse pressure that is applied when each road pulse image sensor 1011 is gathered pulse condition information is controlled on each road of No. three pressue devices 1012 respectively.
Fig. 3 is pressue device 1012 cross-sectional view in one embodiment, and it is depicted as a preferred embodiment of pressue device 1012 of the present invention.Pressue device 1012 mainly is made up of motor, motor slave unit and shell 307, and in shell 307, the motor slave unit is connected with motor in order.The other end of motor driven member is connected with the non-induction end of pulse image sensor 1011.In this embodiment, this motor is a deceleration direct current generator 301, and the motor slave unit comprises pick off mount pad 306, spring 305, moving guide rail 304, moving guide rail fixed screw 309, whorl brace rod 303 and motor output shaft fixed screw 302.This pressue device 1012 also comprises fixed connecting part, and this fixed connecting part comprises motor fixed screw 308.In other embodiments, the motor link can not comprise spring 305 and pick off mount pad 306, and pulse image sensor 1011 can directly be installed on the moving guide rail 304.
Deceleration direct current generator 301 partly is connected with whorl brace rod 303 back segments through motor output shaft fixed screw 302; Whorl brace rod 303 leading portion part surfaces are provided with screw thread; Establish cavity in the moving guide rail 304; The intracavity back segment partly is provided with and the suitable screw thread (not shown) of whorl brace rod 303 set screw threads, and whorl brace rod 303 leading portions and moving guide rail 304 are through being threaded, and the leading portion of whorl brace rod 303 can stretch into the interior (not shown) of cavity of moving guide rail 304.Moving guide rail 304 front ends connect with an end of spring 305, and spring 305 other ends connect with pick off mount pad 306.Above equipment connects in the cylindrical appliance shell 307 of packing into after accomplishing, and through motor fixed screw 308 deceleration direct current generator 301 is fixed in the shell 307.The present invention is not limit by the connected mode between disclosed deceleration direct current generator 301 and whorl brace rod 303, whorl brace rod 303 and the moving guide rail 304 in the present embodiment; Those of ordinary skills can know except that above-mentioned connected mode; Can adopt other connected modes to be connected between deceleration direct current generator 301 and whorl brace rod 303, whorl brace rod 303 and the moving guide rail 304, for example bolt connection, buckle connection etc.
As shown in Figure 3; Moving guide rail 304 surperficial subtends be provided with two along shell vertically the side extend to guide groove; Two pieces of moving guide rail fixed screws 309 stretch into respectively through shell 307 in two guide grooves up and down of moving guide rail 304, can moving guide rail 304 when the shell longitudinal direction moves along the guide groove linear slide.Moving guide rail 304 is not fixedly connected with shell 307 because of moving guide rail fixed screw 309, and the effect of moving guide rail fixed screw 309 is to limit the direction that moving guide rail 304 moves.After deceleration direct current generator 301 powers up; The moment output shaft of motor rotates; The whorl brace rod 303 that is connected with deceleration direct current generator 301 therefore interlock rotates; Do rectilinear motion because of the restriction of moving guide rail fixed screw 309 along the longitudinal direction of shell 307 through the moving guide rail 304 that is threaded with whorl brace rod 303; And moving guide rail 304 drives pulse image sensor 1011 motions through spring 305, pick off mount pad 306, makes pulse image sensor 1011 do rectilinear motion at the longitudinal direction of shell 307.Utilize this pressue device 1012, move forwards or backwards through the rotation direction may command pulse image sensor 1011 of controlling the deceleration direct current generator.In other embodiments, the quantity of said guide groove and moving guide rail fixed screw 309 can be more than 2.
As shown in Figure 1; Analog signal conditioner module 103 comprises three road pulse signal modulate circuits 1031; Three road pulse signal modulate circuits 1031 are electrically connected with three road pulse image sensors 1011 respectively; Receive three tunnel analogue signals of pulse image sensor 1011 outputs, six outfans of three road pulse signal modulate circuits 1031 connect described processor 104 respectively.The effect of analog signal conditioner module 103 is that the analogue signal of pulse image sensor input is nursed one's health, and it is converted to be suitable for the pulse condition analogue signal that D/A converter module is handled, and from primary signal, extracts the direct current signal of representative feeling the pulse pressure simultaneously.
Shown in Figure 4 is a kind of preferred embodiments of one road pulse signal modulate circuit in the analog signal conditioner module disclosed by the invention; Each road pulse signal modulate circuit (1031) receives this analogue signal of corresponding with it road pulse image sensor (1011) output; Elementary difference is amplified this analogue signal; From elementary difference result amplified, extract flip-flop then; Then carry out secondary difference according to said elementary difference result amplified and this flip-flop and amplify, at last secondary difference result amplified and this flip-flop are carried out the voltage adjustment respectively, conditioned signal and first direct current signal of exporting this analogue signal are to this processor (104).
In preamble, closely propose; In the present embodiment; The pulse image sensor 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 simultaneously one-25mV～+ a drift stream voltage between the 25mV.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, simultaneously, the quality of conditioning directly influences whole structure.
As can be seen from Figure 4: behind the analog difference signal of pulse image sensor 1011 outputs of analog signal conditioner module reception pulse condition collecting device 101; At first carry out primary amplification through 401 pairs of analog difference signals of first order amplifier; Then the signal after the elementary amplification being divided into three the tunnel handles respectively; The first via is input to the positive input of second level amplifier 405 through 1: 1 sign-changing amplifier 402; The second the tunnel is input to the reverse input end of second level amplifier 405 through a quick point device 403; The result who obtains through quick point device 403 integrations is the flip-flop in the elementary amplifying signal, and the signal after handling through sign-changing amplifier 402 with through quick point device 403 through 405 pairs in second level amplifier so again carries out the difference amplification, thereby has realized the amplification of the analog difference signal of pulse condition; Remove the wherein influence of flip-flop simultaneously; Obtained pulse condition waveform preferably, the purpose of use quick point device 402 is to improve the response speed of circuit, obtains accurate more pulse condition analogue signal.Third Road through one at a slow speed integrator 404 extract the flip-flop of pulse signals, use here at a slow speed that the purpose of integrator is to extract accurately the DC component in the signal, reduce measurement error.Voltage stabilizing base modules 407 links to each other with first order amplifier 401, second level amplifier 405 and adder 406 respectively.The purpose that voltage stabilizing base modules 407 is electrically connected with first order amplifier 401 is to remove the zero Drift Effects of PVDF pressure resistance type pulse image sensor, makes result after original pulse signal amplifies through difference in a suitable scope, so that later signal processing.The purpose that voltage stabilizing base modules 407 is electrically connected with second level amplifier 405 is to be the analog difference signal that removes the pulse condition behind the direct current known flip-flop that superposeed, and is in the voltage range that rear end AD gathers with the signal after guaranteeing to handle.The purpose that voltage stabilizing base modules 407 is electrically connected with adder 406 is to make the direct current signal that from primary signal, extracts to be in the voltage range of rear end AD collection.
Fig. 5 detects the feeling the pulse pressure of pulse image sensor 1011 and the feeling the pulse pressure sketch map of control pulse image sensor 1011 in one embodiment for pulse manifestation testing system, the figure shows a kind of embodiment of feeling the pulse pressure detecting and control pulse image sensor 101.As shown in Figure 5, the step of the detection of feeling the pulse pressure comprises pulse image sensor 101 collection pulse condition analogue signals; Output pulse condition analogue signal is to analog signal conditioner module 103; Analog signal conditioner module 103 is extracted the dc information of pulse condition analogue signal, output direct current signal to processor 104; Processor 104 carries out this direct current signal date processing such as AD conversion, digital filtering, data compression, the digital DC signal that obtains behind the date processing be exactly represent the feeling the pulse pressure signal of the feeling the pulse pressure that will detect.The control of feeling the pulse pressure is through pressue device driving governor 102, according to the rotation direction of the motor in the digital DC signal controlling pressue device of exporting behind processor 104 date processing 1012, thereby the direction of motion of control pick off realizes.As indicated above, pulse image sensor 1011 carries out rectilinear motion along the longitudinal direction of the shell 307 of pressue device 1012.Pulse image sensor 1011 is big more to the feeling the pulse pressure that then applies away from the motion of pressue device 1012 directions, if pulse image sensor 1011 is more little to the feeling the pulse pressure that moves near pressue device 1012 directions then apply along shell 307.Whole system is formed a closed loop control, the automatic control function of the pressure of can realizing feeling the pulse.Processor 1044 can be controlled the rotation direction of the DC speed-reducing of pressue device 1012 through pressue device driving governor 102; Controlled the direction of motion of pulse image sensor indirectly; Thereby a constant gaging pressure is provided for the measurement of pulse condition information; Like this through 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.Cooperate certain software algorithm, can realize measuring is the gaging pressure that reaches certain, and in the process of measuring, keep constant, make measure more convenient.Because pulse condition collecting device 101 drives pulse image sensor 1011 motor controles feeling the pulse pressure by the motor torque output shaft, to accurate, the easy to use person's control of the control of feeling the pulse pressure.
Fig. 6 is a processor structural representation in one embodiment.Processor 104 need be to carrying out a series of date processing through the signal after 103 conditionings of analog signal conditioner module; As shown in Figure 6; In the present embodiment; Processor 104 mainly comprises AD modular converter 601, pre-processing module 605 and data transmission port 604, and wherein pre-processing module 605 comprises digital filtering module 602, data compressing module 603.
In an embodiment of the present invention; Processor 104 is through a microprogram control unit (MCU; Microprogrammed Control Unit) realizes; Microprogram control unit is that CPU, RAM, ROM, intervalometer, multiple I/O interface and AD conversion module are integrated on the chip piece, forms the computer of chip-scale.
The AD conversion is to realize through the inner AD modular converter 601 of MCU.In certain embodiment, there is one 10 the AD modular converter that compares one by one microprogram control unit inside.Analysis through to pulse condition information knows that the inner AD modular converter of microprogram control unit can satisfy the requirement that system data is gathered.
Digital filtering and digital compression mainly are to realize through digital filtering module 602, data compressing module 603.Data after the 602 couples of AD of the digital filtering module conversion are carried out preliminary treatment, are used to eliminate the influence of obvious errors, wherein, the preliminary treatment that will accomplish comprise smothing filtering (going different unsteady average window) etc.
The data compression main purpose is the occupancy to bandwidth when reducing the Back end data transmission of the volume through packed data.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 is to be understood that and adopts other data compression algorithm also can be applied among the present invention.
Data transmission port 604 comprises Electric Machine Control port, data-out port and man-machine interaction port; Wherein the Electric Machine Control port connects the control signal input of described pressue device driving governor 102; Described data-out port connects the data input pin of described data transmission module 105; The outfan of the keyboard input block of the input connection human-computer interaction module 106 of man-machine interaction port and the outfan of ambient temperature measurement module, the outfan of the man-machine interaction port of described processor connects the input of the LCD MODULE of human-computer interaction module 106.
In the preceding text; As a kind of embodiment of the best, the date processing of analogue signal is comprised the multidirectional date processing of AD conversion, digital filtering and data compression, but in other embodiments; According to the needs of reality, can economize and remove other outer or two processing of AD conversion.
Of Fig. 1, data transmission module 105 is connected with processor 104 two-way communications, is used to realize the transmission to data, and in this example, data transmission module 105 is a wireless transport module, and it carries out transfer of data through wireless network to the data after overcompression.The wireless transmission means branch comprises multiple functions such as radio-frequency transmissions, reception, PLL synthesize, FSK modulation, control able to programme.
Fig. 7 is the data transmission architecture sketch map; We can find out from figure; Pass through wireless transmission method; Pulse condition information acquisition terminal 701 of the present invention can be pulse profile data through pulse condition information acquisition gateway 702 703 ends that upload onto the server, and user's pulse condition information and user profile are deposited among the data base 704, and client 705 can be passed through Internet network connection data storehouse calling party pulse-taking information; This embodiment realized data storage and shared, and can also carry out the tap/dip deep into etc. of data at server end.
In the present embodiment, with the implementation of wireless transmission method, also can adopt traditional wire transmission mode or the mode that copies through storage medium, or above-mentioned multiple mode combination in any is got up to use as the best.
Fig. 8 be processor with human-computer interaction module in one embodiment be connected sketch map.The effect of human-computer interaction module 106 is to make things convenient for user operation pulse-tracing collection terminal.As shown in Figure 8; Human-computer interaction module 106 comprises keyboard input block 803, LCD MODULE 804, ambient temperature measurement module 805, and processor 104 is communicated by letter with the output interface of the input interface of the output interface of keyboard input block 803, LCD MODULE 804, ambient temperature measurement module 805 respectively through man-machine interaction port 802 and is connected.
Keyboard input block 803 helps the concrete function of the user's selective system parameter concrete with input, makes things convenient for the user to set relevant setting.System can be through the correlation behavior of LCD MODULE 804, the real time data and the pulse condition waveform of pulse condition.Ambient temperature measurement module 805 can be realized by related sensor, can carry out the collection of temperature, humidity to the environment at system place, and inform the user through human-computer interaction module 106, and the user is had a better understanding to environment.
In order to reduce the power consumption of system as far as possible, power supply supplying module 107 has been realized the control of each module of whole system and management.Fig. 9 is power supply supplying module 107 structure principle chart in one embodiment; As can be seen from Figure 9 the power supply of 107 pairs of following functional modules of power supply supplying module is controlled and is managed, and they are respectively processor 104, keyboard input block 803, LCD MODULE 804, pressue device driving governor 102, data transmission module 105, operational amplifier 904, pulse image sensor 101.Because the power supply type that each functional module of system needs is different, carries out corresponding conversion processing so system docking is gone into power supply, this power supply supplying module 107 comprises power transfer module 901 and multiway analog switch 909.Power transfer module 901 comprises the linear source of stable pressure of LDO 9011, DCDC converter 9012 and regulated power supply 9013.Be connected with each functional module power input of system through a multiway analog switch 909 again.Wherein the linear source of stable pressure 9011 of LDO with system insert+voltage stabilizing of 5V power supply is to+3.3V, and power supply is provided for processor 104, LCD MODULE 804, pressue device driving governor 102 and data transmission module 105; DCDC converter 902 inserts system+and the 5V power supply converts into ± the 5V power supply, for operational amplifier 904 provides power supply; Regulated power supply 903 arrives the supply voltage voltage stabilizing+3.3V, for pulse image sensor 101 provides power supply.The multiway analog switch 909 that adopts in the power supply supplying module 107 can each module of control system power supply supply with; When system works; Can open or close the power supply supply of correlation module as required through multiway analog switch 909, to reach the purpose that reduces system power dissipation.
Beneficial effect of the present invention is:
The pulse condition collecting device of pulse manifestation testing system disclosed by the invention comprises three road pulse image sensors, three positions of cun,guan,chi that can corresponding human body wrist.Pulse condition collecting device comprises No. three pressue devices; Corresponding one road pulse image sensor of each road pressue device; Can control each road pulse image sensor separately; Thereby be able to the feeling the pulse pressure at three positions of cun,guan,chi is adjusted respectively, help improving the accuracy of pulse condition information collection and the convenience of use.
Comprise three road pulse signal modulate circuits among the present invention among some embodiment, can handle three road pulse condition analogue signals simultaneously; Each road pulse signal modulate circuit more is provided with the quick point device, integrator is guaranteeing that conditioned signal more improves the speed of nursing one's health under the prerequisite accurately, helps pulse manifestation testing system to realize detecting in real time at a slow speed.
In addition; The solid-state piezoresistive transducer that adopts the PVDF material to process among some embodiment among the present invention; Because the solid-state piezoresistive transducer of PVDF has advantages such as advantages of small volume, convenient integrated, sensitivity height, it is more close that its detection method and characteristics and the traditional Chinese medical science are pointed the technical characterstic of feeling the pulse, its demonstration; The collection of illustrative plates of record more is prone to understand and acceptance for the traditional Chinese medical science, has more promoted the convenience and the operability of pulse manifestation testing system.
Comprise data transmission module in the embodiment of the invention in the pulse manifestation testing system, data transfer mode is widened to wireless transmission, wire transmission or through the transmission of storage medium copy.
Pulse manifestation testing system provides the good man-machine interaction port in the embodiment of the invention, the user through the keyboard input block can selective system concrete function and measurement parameter, through the correlation behavior and the pulse condition information of LCD MODULE display system.
In conjunction with the drawings to the description of the specific embodiment of the invention, others of the present invention and characteristic are conspicuous to those skilled in the art.
More than specific embodiment of the present invention is described and explains it is exemplary that these embodiment should be considered to it, and be not used in and limit the invention, the present invention should make an explanation according to appended claim.
Claims (15)
1. a pulse manifestation testing system comprises the pulse condition collecting device (101) that is used to export the pulse condition analogue signal, analog signal conditioner module (103) and the processor (104) that is used to nurse one's health this pulse condition analogue signal; This analog signal conditioner module (103) electrically connects with this pulse condition collecting device (101) and this processor (104) respectively; It is characterized in that,
This pulse condition collecting device (101) comprises three road pulse image sensors (1011) and No. three pressue devices (1012); Said pressue device (1012) connects one to one with said pulse image sensor (1011); This processor (104) is according to the output signal output pulse condition detection signal of this analog signal conditioner module (103) and the control signal that is used to control said No. three pressue devices (1012).
2. pulse manifestation testing system according to claim 1; It is characterized in that; Each road of said pressue device (1012) is included in motor slave unit and the motor that connects in order in the shell of pressue device, and the other end of this motor slave unit is connected with the non-induction end of a said pulse image sensor (1011); During this machine operation, this pulse image sensor (1011) and the interlock of this slave unit are done rectilinear motion along the longitudinal direction of the shell of this pressue device.
3. pulse manifestation testing system according to claim 2 is characterized in that, this motor slave unit comprises whorl brace rod, moving guide rail, this pick off mount pad; This pick off mount pad, this moving guide rail, this whorl brace rod and this motor connect in this shell in order; The other end of this pick off mount pad connects with said corresponding road pulse image sensor (1011); This moving guide rail outer surface subtend is provided with two guide grooves that extend along this moving guide rail longitudinal direction, and two fixed screws pass this shell and stretch in the corresponding said guide groove; During this machine operation, said two fixed screws are done linear slide at said guide groove along said guide groove.
4. pulse manifestation testing system according to claim 2 is characterized in that, this pulse condition collecting device (101) also comprises support, and said each road pressue device (1012) is individually fixed on this support, spacing and adjustable positions between each road pressue device (1012).
5. pulse manifestation testing system according to claim 4 is characterized in that, wrister also is set on this support, and this wrister and this pulse image sensor are positioned at the homonymy of this support, and the induction end of this wrister and this pulse image sensor in the same way.
6. pulse manifestation testing system according to claim 1 is characterized in that, this analog signal conditioner module (103) comprises three road pulse signal modulate circuits (1031); Each road pulse signal modulate circuit (1031) receives this analogue signal of corresponding with it road pulse image sensor (1011) output; Elementary difference is amplified this analogue signal; From elementary difference result amplified, extract flip-flop then; Then carry out secondary difference amplification according to said elementary difference result amplified and this flip-flop; At last secondary difference result amplified and this flip-flop are carried out the voltage adjustment respectively, conditioned signal and first direct current signal of exporting this analogue signal are to this processor (104).
7. pulse manifestation testing system according to claim 6; It is characterized in that; This each road pulse signal modulate circuit (1031) comprises first order amplifier, 1: 1 sign-changing amplifier, quick point device, integrator, second level amplifier, voltage stabilizing base modules and adder at a slow speed, and wherein this first order amplifier electrically connects this corresponding road pulse image sensor (1011), this sign-changing amplifier, this quick point device, this integrator and this voltage stabilizing base modules at a slow speed; This first order amplifier receives the preset direct current signal of this analogue signal and the output of this voltage stabilizing base modules, exports first amplifying signal to this 1: 1 sign-changing amplifier, this quick point device and this integrator at a slow speed;
The positive input of this sign-changing amplifier and this first order amplifier and this second level amplifier electrically connects, and receives this first amplifying signal, exports the positive input of second amplifying signal to this second level amplifier;
The reverse input end of this quick point device and this first order amplifier and this second level amplifier electrically connects, and receives this first amplifying signal, exports the reverse input end of second direct current signal to this second level amplifier;
This is integrator and this first order amplifier and the electric connection of this adder at a slow speed, receives this first amplifying signal, exports the 3rd direct current signal to this adder;
This voltage stabilizing base modules and this first order amplifier, this second level amplifier and this adder electrically connect, and output should be preset direct current signal to this first order amplifier, this second level amplifier and this adder;
This second level amplifier receives this second amplifying signal, this second direct current signal and should preset direct current signal, exports this conditioned signal to this processor (104);
This adder receives the 3rd direct current signal and should preset direct current signal, exports this first direct current signal to this processor (104).
8. pulse manifestation testing system according to claim 1 is characterized in that, this processor (104) comprises AD modular converter, pre-processing module and data transmission port; This AD modular converter receives the output signal of this analog signal conditioner module (103) and this output signal is carried out the AD conversion, and this pre-processing module is carried out pretreatment to the digital signal that AD conversion back obtains, and this data transmission port is transmitted said pretreated data.
9. pulse manifestation testing system according to claim 1 is characterized in that, this pulse manifestation testing system also comprises pressue device driving governor (102); This pressue device driving governor (102) electrically connects with this pulse condition collecting device (101), this processor (104) respectively; This processor (104) is controlled each road of said No. three pressue devices (1012) respectively through this pressue device driving governor (102).
10. pulse manifestation testing system according to claim 1 is characterized in that, this pulse manifestation testing system also comprises data transmission module (105), and this data transmission module (105) is connected with this processor (104) two-way communication.
11. pulse manifestation testing system according to claim 1 is characterized in that, this pulse manifestation testing system also comprises human-computer interaction module (106), and this human-computer interaction module (106) is connected with this processor (104) two-way communication.
12. pulse manifestation testing system according to claim 11; It is characterized in that; This human-computer interaction module (106) comprises keyboard input block, LCD MODULE, ambient temperature measurement, and processor (104) is communicated by letter with the output interface of the input interface of the output interface of keyboard input block, LCD MODULE, ambient temperature measurement module respectively and is connected.
13. pulse manifestation testing system according to claim 1; It is characterized in that; This pulse manifestation testing system also comprises power supply supplying module (107), and this power supply supplying module (107) electrically connects with this pulse condition collecting device (101), this analog signal conditioner module (103) and this processor (104) respectively.
14. pulse manifestation testing system according to claim 13 is characterized in that, this power supply supplying module (107) comprises power transfer module and multiway analog switch, and wherein this power transfer module comprises the linear source of stable pressure of LDO, DCDC converter and regulated power supply.
15. pulse manifestation testing system according to claim 1 is characterized in that, this pulse image sensor (1011) is a PVDF pressure resistance type pulse image sensor.
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