CN102090896A - Method for measuring planta pressure for rehabilitation therapy - Google Patents
Method for measuring planta pressure for rehabilitation therapy Download PDFInfo
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- CN102090896A CN102090896A CN 201110074892 CN201110074892A CN102090896A CN 102090896 A CN102090896 A CN 102090896A CN 201110074892 CN201110074892 CN 201110074892 CN 201110074892 A CN201110074892 A CN 201110074892A CN 102090896 A CN102090896 A CN 102090896A
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Abstract
The invention relates to a method for measuring planta pressure for rehabilitation therapy. The method is characterized in that thin film piezoresistive type pressure sensors are adopted to be placed on planta pressure points in left and right sock linings, each sock lining is of a three layer structure, and the top layer and the bottom layer are fiber layers; the thin film piezoresistive type pressure sensors are tightly adhered to and fixed on the bottom layers closely, are fixedly connected with the fibers at the top layers through soft salient points, and transmits the acquired resistance signals corresponding to the pressure to two signal processing transmitters which are corresponding to the pressure sensors of the left and right sock linings, the resistance signals are subjected to resistance-voltage conversion and wave filtration and then are output to two corresponding micro processors so as to be subjected to AD (analog-to-digital) conversion respectively; data acquired from two feet are merged into a data packet and is transmitted to a receiver; the receiver transmits the data of the left and right feet to a PC (personal computer) through a USB (universal serial bus); and the PC reads the data through the triggering of a timing device, and unpacks the data packet, and signal processing and three dimensional display are carried out through software.
Description
Technical field
The present invention relates to the rehabilitation diagnosis and treatment instrument, relate in particular to a kind of plantar pressure measuring method that is used for rehabilitation, mainly be applicable at locomotor activity weaken or lose the state of an illness assessment in treatment early stage of locomotor activity rehabilitation of patients, for work out rehabilitation training plans provide according to, in the rehabilitation training process or recruitment evaluation and the diabetes state of an illness of training after finishing check in early days.
Background technology
Because variation and people's dietary habit of living environment, the sickness rate of apoplexy cardiovascular and cerebrovascular disease such as (being commonly called as apoplexy) is very high, though raising along with current medical skill, the mortality rate of apoplexy descends to some extent, but, among those patients of getting off of surviving, still have about 70% patient to have in various degree obstacle of limb movement such as hemiplegia, wherein can only be the companion with wheelchair after 30% the patient, and have 25%～30% in 5 years, can recur among the paralytic.In addition, because the children with cerebral palsy that premature labor or difficult labour caused accounts for birth child's 0.5%, the child of these cerebral palsy diseases does not possess normal locomotor activity usually yet, they probably throughout one's life with wheelchair, crutch for accompanying, may have no chance forever as other children, enjoy life, accepted the education.In the beginning of this century, studies show that of rehabilitation medicine, most patient is after obtaining correct rehabilitation training, still can recover original locomotor activity, now just need work out effective rehabilitation training plans according to the concrete condition of every individual patients, and the formulation of this training plan and implement to be is based upon on the basis of the detection of some features of individual patients itself and observation, the gait of walking such as the patient and the pressure distribution in vola etc.
Tradition gait measuring instrument adopts the arrangement mode of vola rigidity sensor array formula, needs thousands of pressure transducers, and data volume is big, causes sample rate low, and price is high and use face is narrow, and very flexible, comfort level are not good; Signal transmission form between measuring instrument and PC show, one is that employing is the transmission means of physical cables, another is that the data of patient in test process are kept in the memorizer, to be tested finishing, and PC reads patient's gait data again from memorizer.The former adopts physical cables to fetter patient's freedom, seriously disturbed tested individuality, the data of surveying also are inaccurate like this, though and the latter has solved the interference problem to the patient, but can not observe patient's gait situation in real time, PC show also can only simple displaying gait rule wavy curve, be unfavorable for that rehabilitation doctor and diagnostician detail knowledge on the details analyzes patient condition.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art, a kind of plantar pressure measuring method that is used for rehabilitation is provided, plantar pressure distributes when being used to detect the patient and walking, for the rehabilitation training doctor provides quantitative gait measurement data, the doctor then can work out the training plan of suitable individual patients according to these data that record, and group organizes the locomotor activity that they return to the normal person sooner.
The present invention is by the following technical solutions: a kind of plantar pressure measuring method that is used for rehabilitation, be equipped with pressure transducer in the shoe pad of the left and right sides, vola, it is characterized in that: two plantar pressure points that shoe pad is interior about adopting the thin film pressure drag type pressure capsule to be placed on, shoe pad is a three-decker, top layer and bottom are fibrous layer, the thin film pressure drag type pressure capsule be close on the bottom place fixing, the thin film pressure drag type pressure capsule is connected and fixed by soft salient point and top layer fiber, the resistance signal corresponding with pressure that the thin film pressure drag type pressure capsule will obtain is transferred to two the resistance-voltage conversion circuits that signal processing emitter respectively comprise corresponding with left and right sides shoe pad pressure transducer, the microprocessor of exporting to two correspondences behind the filter circuit carries out the AD conversion respectively, with the data frame format packing after arbitrary foot microprocessor AD conversion, send to the signal processing emitter of another foot in the mode of bluetooth, the data that bipod is gathered are merged into packet and send to receptor together, receptor is transferred to PC with left and right sides foot data by USB, PC is triggered by intervalometer and reads data, packet is unpacked, carry out signal processing and three dimensional display by software.
Plantar pressure distributed points when the plantar pressure point system in the said shoe pad walks and stands with reference to the normal person can respectively be provided with the thin film pressure drag type pressure capsule of 10 corresponding plantar pressure distributed points, left and right sides shoe pad symmetric arrangement in the shoe pad of the left and right sides.
The computing circuit of 20 tunnel sensor signals input of 3 four high guaily unit LM324AD can respectively be set in two signal processing emitters, realize the conversion of pressure-change in voltage, constitute second-order low-pass filter by LM324AD again, the microprocessor STM32F103 that signal is carried out sending in the signal processing emitter after the filtering conditioning carries out the AD conversion to signal, the pretreatment in early stage of data, the packing of Bluetooth transmission packet and driving bluetooth transceiver module send the data to receptor, receptor transfers data to PC by USB, the software that one group of control of NI measurement studio that PC software adopts to be provided in conjunction with the American National instrument under the MFC framework is write carries out 3 D stereo to left and right sides foot 20 road pressure signals and shows, waveform shows and storage.
Compared with prior art, the present invention has the following advantages:
1) the present invention has abandoned the arrangement mode of traditional rigidity sensor array formula, choose representative point in the vola and come placement sensor, significantly reduce the quantity of pick off, under the prerequisite of not losing valid data, improved sample rate, promote the reliability of system, also made cost greatly reduce.And owing to selected pliable pressure touch sensor more comfortable concerning human body, whole shoe pad also to be flexible, easy to use comfortable, measured data are also truer.
2) the traditional gait measuring instrument PC wavy curve of gait rule that shown just simple displaying, be unfavorable for rehabilitation doctor and diagnostician detail knowledge patient condition on the details, and PC demonstration of the present invention has adopted three-dimensional mountain peak figure to show simultaneously and pressure waveform shows, each point pressure of vola is presented in face of the doctor with the form of mountain peak figure, make rehabilitation doctor see patient's plantar pressure more intuitively clearly and distribute, make things convenient for the gait situation of Real Time Observation patient walking.
3) signal transmission form between measurement data and PC show, the present invention adopts the mode of wireless blue tooth communication, allow the patient break away from the constraint of conventional physical media such as cable, give the patient freedom of " wireless ", the data that the doctor is obtained are truer, and can observe patient walking in real time or the distribution situation of plantar pressure when standing, thereby, the rehabilitation therapy programe of the formulation situation that also more gears to actual circumstances.
4) mostly traditional sole pressure test system is to adopt rigid design, use face is narrow, very flexible, comfort level is not good, and what the present invention then adopted is the fexible film pressure transducer, is fitted in Shoe-pad made of fiber internal layer commonly used, each pick off all is furnished with soft salient point, both guaranteed comfortableness, and strengthened the sensitivity of pressure transducer again, measured data are truer.
Description of drawings
Fig. 1 is a population structure block diagram of the present invention;
Fig. 2 is a shoe pad three-decker sketch map of the present invention;
Fig. 3 is a bluetooth module circuit diagram of the present invention;
Fig. 4 is voltage dependent resistor voltage conversion circuit figure of the present invention;
Fig. 5 is a second order active low-pass filter circuit diagram of the present invention;
Fig. 6 is a software flow pattern of the present invention.
The specific embodiment
Hereinafter reaching concrete enforcement in conjunction with the accompanying drawings describes the present invention.
As shown in Figure 1, 2, two shoe pad (each one on left and right sides foot), two signal processing emitters (I and II) and receptors that respectively include ten flexible voltage dependent resistor type pressure touch sensors.The signal that the signal processing emitter obtains by processes sensor, obtain the voltage magnitude of corresponding plantar pressure size, pass through Bluetooth transmission again, data are sent into receptor, receptor sends the data of receiving to PC by USB, PC software realizes that the three-dimensional mountain peak figure of the pressure of 20 points in double-legged vola shows and waveform shows, and with these pressure data storages, in order to looking into usefulness later on.About white point on two shoe pads be resistor-type pressure touch sensor applying position.In the signal processing emitter, send into after the resistance-voltage conversion circuit of pressure signal process, the filtering carry out AD conversion in the microprocessor, the mode by bluetooth sends then.Wireless transmission adopts bluetooth 2.0 agreements.Receptor is sent signal into PC software by USB after receiving Bluetooth signal, carries out the further processing and the three dimensional display of signal.Can adopt 20 flexible voltage dependent resistor type pressure touch sensors (flexiforce) to be fitted in human body walking and when standing plantar pressure have certain representational body surface place, left and right sides sole ten pick offs that respectively distribute.Above the people stand in or dress when being equipped with shoes of the present invention walking, these pick offs just can collect the corresponding pressure signal of vola each several part, and its front end is reflected in the variation of sensor electrical resistance.The anti-phase scale operation circuit of being made up of pick off and amplifier will be converted to correspondent voltage corresponding to the changes in resistance of plantar pressure and change again.The variation of voltage magnitude is directly proportional with the size variation of plantar pressure, and promptly the big more representative plantar pressure of the amplitude of this voltage signal is big more.About 20 road voltage signals of two feet by second order Butterworth low pass active power filtering, cut-off frequency is 16HZ.AD with filtered signal input microprocessor STM32F103 changes input then, by microprocessor STM32F103 these voltage signals are carried out scan-type 12BitAD conversion, after the analog signal conversion of voltage become digital signal, by bluetooth digital quantity is transferred to PC wirelessly again.PC then adopts the scheme of the one group of control (NI measurement studio) that is provided in conjunction with the American National instrument under the MFC framework to write and forms.Can carry out 3 D stereo demonstration, waveform demonstration and storage to left and right sides foot 20 road pressure signals, the interface is succinct, directly perceived.The similar shoe pad of instrument profile adopts the pliable pressure touch sensor, and therefore, whole shoe pad also is to be flexible, and user can put it into the use of Energy and comfort in the shoes that use in the daily life.In the user walking process, this invention can record its plantar pressure distribution situation.The plantar pressure data that measure are transferred to PC in the mode of wireless blue tooth, analyze for the doctor.Wireless transmission mode allows user break away from the constraint of physical medias such as cable, thereby measured data are truer.Fig. 2 is the three-decker sketch map of shoe pad of the present invention.Shoe pad top layer and bottom are fibrous layer.Diaphragm pressure sensor is close on the bottom and is placed, and pick off is connected with the top layer fiber by soft salient point, makes the measurement effect of plantar pressure more obvious.
Referring to Fig. 3-5, the hardware circuit that the present invention adopts is known circuit.By the computing circuit of 20 tunnel sensor signals input that contains six (each three on left and right sides foot) four high guaily unit LM324AD, realize that the pressure of voltage dependent resistor type pressure transducer changes to the conversion of change in voltage.Constitute second-order low-pass filter by LM324AD again, cut-off frequency is 16Hz, and signal is carried out the filtering conditioning.Microprocessor STM32F103 be responsible for to signal carry out AD conversion, data pretreatment in early stage, Bluetooth transmission packet packing and drive bluetooth module and send the data to PC.System is by lithium battery power supply commonly used, by boost, circuit such as blood pressure lowering, voltage stabilizing obtains the required supply voltage of each circuit module.User's slave is issued receptor by bluetooth 2.0 agreements with data, and receptor is sent signal into PC by USB again and shown.
Fig. 6 is the workflow diagram of the software of PC, signal processing emitter.As shown in the figure, pack with certain data frame format in the microprocessor AD conversion back of the pressure signal of the respective point of the sensor acquisition on shoe pad in signal processing emitter II, send to the signal processing emitter I of another shoe pad correspondence again in the mode of bluetooth, be merged into the packet with certain format with data that the pick off of the corresponding shoe pad of emitter I is gathered and send to receptor together, receptor is transferred to PC with left and right sides foot data by USB then.PC is triggered by intervalometer and reads data, and packet is unpacked, and obtains to preserve behind the valid data, and refreshes interface display.。
Claims (3)
1. plantar pressure measuring method that is used for rehabilitation, be equipped with pressure transducer in the shoe pad of the left and right sides, vola, it is characterized in that: two plantar pressure points that shoe pad is interior about adopting the thin film pressure drag type pressure capsule to be placed on, shoe pad is a three-decker, top layer and bottom are fibrous layer, the thin film pressure drag type pressure capsule be close on the bottom place fixing, the thin film pressure drag type pressure capsule is connected and fixed by soft salient point and top layer fiber, the resistance signal corresponding with pressure that the thin film pressure drag type pressure capsule will obtain is transferred to two the resistance-voltage conversion circuits that signal processing emitter respectively comprise corresponding with left and right sides shoe pad pressure transducer, the microprocessor of exporting to two correspondences behind the filter circuit carries out the AD conversion respectively, with the data frame format packing after arbitrary foot microprocessor AD conversion, send to the signal processing emitter of another foot in the mode of bluetooth, the data that bipod is gathered are merged into packet and send to receptor together, receptor is transferred to PC with left and right sides foot data by USB, PC is triggered by intervalometer and reads data, packet is unpacked, carry out signal processing and three dimensional display by software.
2. the plantar pressure measuring method that is used for rehabilitation according to claim 1, it is characterized in that: the plantar pressure distributed points when the plantar pressure point system in the said shoe pad walks and stands with reference to the normal person, the thin film pressure drag type pressure capsule of 10 corresponding plantar pressure distributed points respectively is set, left and right sides shoe pad symmetric arrangement in the shoe pad of the left and right sides.
3. the plantar pressure measuring method that is used for rehabilitation according to claim 1 and 2, it is characterized in that: the computing circuit that 20 tunnel sensor signals input of 3 four high guaily unit LM324AD respectively is set in two signal processing emitters, realize the conversion of pressure-change in voltage, constitute second-order low-pass filter by LM324AD again, the microprocessor STM32F103 that signal is carried out sending in the signal processing emitter after the filtering conditioning carries out the AD conversion to signal, the pretreatment in early stage of data, the packing of Bluetooth transmission packet and driving bluetooth transceiver module send the data to receptor, receptor transfers data to PC by USB, the software that one group of control of NI measurement studio that PC software adopts to be provided in conjunction with the American National instrument under the MFC framework is write carries out 3 D stereo to left and right sides foot 20 road pressure signals and shows, waveform shows and storage.
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| CN201110074892A CN102090896B (en) | 2011-03-28 | 2011-03-28 | Method for measuring planta pressure for rehabilitation therapy |
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Cited By (13)
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| CN102670218A (en) * | 2012-05-15 | 2012-09-19 | 北京大学 | Wearable foot bottom pressure acquisition device for artificial limb control |
| CN102793542A (en) * | 2012-08-21 | 2012-11-28 | 北京加华丰业科技有限公司 | Device for acquiring sole pressure and three-dimensional data of foot appearance |
| CN102846320A (en) * | 2011-06-30 | 2013-01-02 | 鸿富锦精密工业（深圳）有限公司 | Tread correcting system and method |
| CN103330565A (en) * | 2013-04-16 | 2013-10-02 | 北京航空航天大学 | Human body gait recognition device based on sole pressure distribution change |
| CN104598722A (en) * | 2014-12-25 | 2015-05-06 | 中国科学院合肥物质科学研究院 | Parkinson patient walking ability evaluation method based on gait time-space parameters and three-dimensional force characteristics |
| CN105054953A (en) * | 2015-07-28 | 2015-11-18 | 安徽机电职业技术学院 | Clinical treatment effect evaluation system based on sole pressure distribution |
| CN105125216A (en) * | 2015-08-29 | 2015-12-09 | 深圳市老年医学研究所 | Gait detection system based on sole pressure |
| CN105193385A (en) * | 2015-08-17 | 2015-12-30 | 联想(北京)有限公司 | Information processing method and electronic equipment |
| CN106338353A (en) * | 2016-10-14 | 2017-01-18 | 哈尔滨工业大学 | Vola pressure and moment measurement shoe pad based on pressure membrane |
| CN106473743A (en) * | 2016-10-14 | 2017-03-08 | 哈尔滨工业大学 | Human body foot end in contact force measuring device |
| CN107307869A (en) * | 2017-06-13 | 2017-11-03 | 哈尔滨医科大学 | Intelligent lower limb heavy burden safeguard protection, training effect monitoring and gait analysis device |
| CN107490443A (en) * | 2017-04-27 | 2017-12-19 | 安徽华脉科技发展有限公司 | A kind of multi-functional haptic signal detecting system based on piezoelectric membrane |
| CN108062979A (en) * | 2018-01-11 | 2018-05-22 | 大连乾函科技有限公司 | A kind of static plantar pressure analytical equipment and method based on pressure sensor |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102846320A (en) * | 2011-06-30 | 2013-01-02 | 鸿富锦精密工业（深圳）有限公司 | Tread correcting system and method |
| CN102670218A (en) * | 2012-05-15 | 2012-09-19 | 北京大学 | Wearable foot bottom pressure acquisition device for artificial limb control |
| CN102670218B (en) * | 2012-05-15 | 2014-08-20 | 北京大学 | Wearable foot bottom pressure acquisition device for artificial limb control |
| CN102793542A (en) * | 2012-08-21 | 2012-11-28 | 北京加华丰业科技有限公司 | Device for acquiring sole pressure and three-dimensional data of foot appearance |
| CN103330565A (en) * | 2013-04-16 | 2013-10-02 | 北京航空航天大学 | Human body gait recognition device based on sole pressure distribution change |
| CN104598722A (en) * | 2014-12-25 | 2015-05-06 | 中国科学院合肥物质科学研究院 | Parkinson patient walking ability evaluation method based on gait time-space parameters and three-dimensional force characteristics |
| CN104598722B (en) * | 2014-12-25 | 2017-04-19 | 中国科学院合肥物质科学研究院 | Parkinson patient walking ability evaluation method based on gait time-space parameters and three-dimensional force characteristics |
| CN105054953A (en) * | 2015-07-28 | 2015-11-18 | 安徽机电职业技术学院 | Clinical treatment effect evaluation system based on sole pressure distribution |
| CN105193385A (en) * | 2015-08-17 | 2015-12-30 | 联想(北京)有限公司 | Information processing method and electronic equipment |
| CN105193385B (en) * | 2015-08-17 | 2020-07-24 | 联想(北京)有限公司 | Electronic equipment |
| CN105125216A (en) * | 2015-08-29 | 2015-12-09 | 深圳市老年医学研究所 | Gait detection system based on sole pressure |
| CN106338353A (en) * | 2016-10-14 | 2017-01-18 | 哈尔滨工业大学 | Vola pressure and moment measurement shoe pad based on pressure membrane |
| CN106473743A (en) * | 2016-10-14 | 2017-03-08 | 哈尔滨工业大学 | Human body foot end in contact force measuring device |
| CN107490443A (en) * | 2017-04-27 | 2017-12-19 | 安徽华脉科技发展有限公司 | A kind of multi-functional haptic signal detecting system based on piezoelectric membrane |
| CN107307869A (en) * | 2017-06-13 | 2017-11-03 | 哈尔滨医科大学 | Intelligent lower limb heavy burden safeguard protection, training effect monitoring and gait analysis device |
| CN108062979A (en) * | 2018-01-11 | 2018-05-22 | 大连乾函科技有限公司 | A kind of static plantar pressure analytical equipment and method based on pressure sensor |
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