CN103300835A - High-precision human pulse measurement system - Google Patents

High-precision human pulse measurement system Download PDF

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CN103300835A
CN103300835A CN 201310204205 CN201310204205A CN103300835A CN 103300835 A CN103300835 A CN 103300835A CN 201310204205 CN201310204205 CN 201310204205 CN 201310204205 A CN201310204205 A CN 201310204205A CN 103300835 A CN103300835 A CN 103300835A
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base
clamp
flexible beam
probes
body
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CN 201310204205
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Chinese (zh)
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CN103300835B (en )
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夏明一
程伟
陈江攀
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北京航空航天大学
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Abstract

A high-precision human pulse measurement system comprises a base, three probes, strain-type force sensors, an air bag and a data acquisition and processing system, wherein the three strain-type sensors are respectively positioned at the three probes at different positions and mainly used for measuring the pulses of Cun, Guan and Chi; the probes are mounted on the base through flexible beams and clamps, with fine-tuned relative positions; the air bag is positioned below the probes and mounted at the bottom of the base, and can simulate best pulse pressure through pressurizing; and pressure fluctuation signals at different positions can be measured through full-bridge connection of four strain gages. During testing, a human body pulse point is relatively fixed with the base, all strain-type sensors are connected with the data acquisition and processing system through conducting wires. According to the invention, the system can accurately measure a disturbing force of a micro-vibration source and is high in measuring accuracy.

Description

一种高精度人体脉动测量系统 A high precision measurement system body ripple

技术领域 FIELD

[0001] 本发明涉及一种高精度人体脉动测量系统,可用于对人体寸关尺三处的脉搏的振动信号进行动态测量。 [0001] The present invention relates to a high-precision measurement system body pulsation, vibration signals can be used to pulse the human foot three inches off of the dynamic measurements.

背景技术 Background technique

[0002] 我国是中医脉诊技术的发源地,在中医理论中大部分的诊断方法都是以脉诊技术为依据的,通过它可以了解患者的病情、掌握病因、确定治疗方案预测等。 [0002] Our country is the birthplace of pulse diagnosis technology in traditional Chinese medicine theory, most diagnostic methods are based on pulse diagnosis technology based, which can understand the patient's condition, to grasp the cause, to determine the program to predict treatment. 由此可见,脉诊技术在中医四诊中占有非比寻常的位置。 Thus, the pulse diagnosis technology plays in the extraordinary position of the four diagnostic methods. 早在公元三世纪,《脉经》著作就在我国问世,这是中医脉学史上的重要标志,同时也是最早的有文字记载的脉学著作。 As early as the third century AD, "Pulse," works in our country come out, this is an important symbol in the History of Chinese Pulse, there is also the earliest written records of books about the pulse. 在我国传统的医学治疗中,脉诊是其中尤为重要的一种方法,它经过积累望、闻、问、切四诊所得的临床信息,进行综合整理分析,其记载详细,应用长远,从而可以得到比较准确、全面的诊断。 In traditional medical treatment in our country, pulse diagnosis is particularly important where a method that through the accumulation of look, smell, and asked, clinical information exam's cut, finishing a comprehensive analysis of its records detailed, long-term use, which can obtain more accurate and comprehensive diagnosis. 医学上认为的脉诊技术是指医生通过手指接触病人的血管,感觉血管中脉象的搏动情况,掌握病因,诊断病情的方法。 Considered medically pulse diagnosis technology is the doctor through a blood vessel in contact with the patient's finger, feeling the pulse beat in the case of blood vessels, grasp the cause, method of disease diagnosis.

[0003] 许多研究者可能会认为心电也是研究心血管系统的,对心电信号的处理和分析已经足够了。 [0003] Many researchers might think that the ECG is to study the cardiovascular system, ECG processing and analysis is enough. 然而心电信号反映的是人体的生物电信息。 However, ECG reflects the bioelectrical information on the body. 通过分析脉搏的压力波动这一物理信号,医生能够发现心电信号所发现不到的信息。 By analyzing the pressure fluctuations of the physical signal pulse, the physician can not find the information found ECG. 脉诊不仅是探知心血管系统的生理病理征象,它还能对人体其它器官生理病理状态进行解读。 Pulse diagnosis to ascertain not only the physiological and pathological signs of the cardiovascular system, it can also other organs of the human body to interpret physiological and pathological states. 不仅如此,传统的中医脉诊还能够精确地推断疾病的部位和病变程度,同时它也是联合国卫生组织推崇的不流血、无创、无损伤、无痛苦、无副作用、便利的医疗手段。 Moreover, traditional Chinese medicine pulse diagnosis also able to accurately infer the location and severity of the disease, but it is also the World Health Organization respected bloodless, non-invasive, non-invasive, no pain, no side effects, convenient medical treatment.

发明内容 SUMMARY

[0004] 本发明要解决的技术问题是:克服现有技术的不足,提供一种高精度(精度优于10_3N)人体脉动测量系统,该测量系统可以测量人体脉搏跳动过程中,精确测量微小振动源的扰动力,测量的精确度高。 [0004] The present invention is to solve the technical problem: to overcome the deficiencies of the prior art, there is provided a high accuracy (accuracy better than 10_3N) pulsation body measurement system, the measurement system may measure the pulse rate during the body, accurate measurement of small vibration disturbance sources of power, high accuracy measurements.

[0005] 本发明要解决其技术问题所采用的技术方案是:一种高精度人体微振动测量系统,包括底座、竖直方向安装的、夹具、应变传感器、以及数据采集和处理系统;振动源与探头接触,引起柔性梁发生应变,其中柔性梁通过二个螺栓压紧,夹具通过可调紧螺丝与底座顶部连接,保持竖直方向左右10°的调节范围;柔性梁采用弹性系数适合的某型号弹簧钢,其可多次利用数远超过当前生物薄膜的脉搏测量系统。 [0005] aspect of the present invention is to solve the technical problem is that: a high-precision micro-body vibration measurement system, comprising a base, vertical installation of the clamp, strain sensor, and a data acquisition and processing system; vibration source in contact with the probe, a flexible beam occurs due to strain, wherein the flexible beam by pressing two bolts, clamps connected to the top of the base by adjustable screws holding the left and right vertical adjustment range of 10 °; a flexible beam of a suitable elastic coefficient type spring steel, which may be far more than the number of repeated use of the current pulse measuring system biofilms.

[0006] 本发明与现有技术相比的优点在于: [0006] The advantages of the present invention compared to the prior art in that:

[0007] ( I)本发明测量系统在测量人体脉搏跳动过程中,能够精确测量微小振动源的扰动力,测量的精确度高。 [0007] High accuracy (I) of the present invention is measured in the measurement system of the human body during the pulse beat to accurately measure small vibration disturbance power source measurements.

[0008] (2)现在已经研制出来的并普遍应用的脉诊设备,大多采用PVDF生物薄膜,由于其与皮肤直接接触,易受油脂腐蚀,使其使用寿命太短,低频效果差,本发明产生应变的材料不与皮肤直接接触,并由于悬臂梁材料的弹性特性使用寿命较长,可重复利用次数多,且由于采集设备的高精度性可保持脉图真实清晰;[0009] (3)在脉图清晰的前提下,该机构通过反馈控制气囊达到压力可调,干扰减少,适用于不同人群都在最佳取脉压力下诊脉。 [0008] (2) pulse diagnosis apparatus has now been developed and widely used, most of the biofilm made of PVDF, due to its direct contact with the skin, fat susceptible to corrosion, it is too short life, poor low frequency, the present invention a strain of the material is not in direct contact with the skin, and due to the elastic properties of the material cantilever long service life, can be reused multiple times, and since the precision of the collecting device can be kept clear pulse transactions; [0009] (3) in FIG clear pulse premise, the feedback control mechanism is achieved by balloon pressure adjustable interference reduction for different groups of Mo were taken at the optimum pressure pulse.

[0010] (4)本发明通过三个夹具的可调节性,及气囊的存在,可适用于绝大部分的脉诊者不同部位诊脉的需求。 [0010] (4) may be adjusted by three clamp of the present invention, and the presence of the airbag, applicable to most of the different parts of the troubles by pulse diagnosis needs.

附图说明 BRIEF DESCRIPTION

[0011] 图1为本发明的结构示意图(底座(2)顶部锁死状态); [0011] FIG. 1 is a schematic structural diagram of the present invention (the base (2) the top of a locked state);

[0012] 图2为本发明的结构示意图(底座(2)顶部打开状态); Schematic structural diagram of [0012] the present invention. FIG. 2 (a base (2) open at the top);

[0013] 图3为不同人测量得到的脉搏信号; [0013] Figure 3 to measure the pulse signal obtained for different people;

[0014] 图4为不同人测量得到的脉搏信号。 [0014] FIG. 4 is a pulse signal measured in different people.

具体实施方式 Detailed ways

[0015] 如图1、2所示,本发明的高精度人体脉动测量系统,包括:数据采集和处理系统1、底座2、气囊3、第一夹具4、第二夹具5、第三夹具6、全桥应变片7、柔性梁8和三个探头9 ;三个沿竖直方向安装的第一夹具4、第二夹具5和第三夹具6通过可调节螺栓安装在底座I上,使数据采集和处理系统1、底座2和气囊3能够通过手动上下移动;三个全桥应变片7、三个柔性梁8和三个探头9组成三个相同的应变传感器,其中柔性梁8为两头宽,中间窄的形状,全桥应变片7贴在柔性梁8窄处上下各两片,通过连线构成全桥回路,三个探头9安置在三个柔性梁8前端,通过第一夹具4、第二夹具5和第三夹具6固定在底座上2,人体寸、关、尺三处与探头接触,引起柔性梁8发生应变,其中柔性梁8通过二个螺栓被第一夹具4、第二夹具5和第三夹具6压紧,第一夹具4、第二夹具5和第三夹具 [0015], the high-precision measuring pulsation body system of the invention, Figures 1 and 2 comprises: a data acquisition and processing system 1, a base 2, a balloon 3, 4 first clamp, a second clamp 5, the third clamp 6 , full-bridge strain gauge 7, 8, and three flexible beam probe 9; three in the vertical direction of the first mounting jig 4, the second 5 and the third clamp jig 6 by an adjustable screw mounted on the base I, so that the data acquisition and processing system 1, the base 2 and the balloon 3 can be moved up and down by manually; three full bridge strain gauges 7, 8, and three flexible beam 9 three probes consisting of three identical strain sensors, wherein two of the flexible beam width is 8 intermediate narrow shape, full-bridge strain gauge 7 8 narrow at the upper and lower two flexible beam, constituting the full bridge circuit via line, three probes 8 9 disposed in the front end of three flexible beam, the first clamp 4, second clamp 5 and the third clamp 6 fixed to the base 2, the body inch, closed, three feet in contact with the probe, to cause the flexible beam strained 8, wherein the flexible beam 8 by two bolts 4 is a first clamp, a second 5 and the third jig pressing jig 6, a first jig 4, the second 5 and the third clamp jig 6通过可调紧螺丝与底座2顶部连接。 6 is connected to the top of the base 2 by an adjustable screw. 第一夹具4、第二夹·具5和第三夹具6按人体寸关尺位置,类似地分布在底座2上;气囊3固定于底座2底部,并受数据采集和处理系统I反馈控制,调节气囊3内部压力,并以全桥应变片7的信号为反馈信号,使压力保持任意恒值;工作过程中,受测人腕部放置于气囊3上,三个探头9通过第一夹具4、第二夹具5和第三夹具6接触人体手臂寸、关、尺三处位置,气囊3覆盖在整个底座2底部起承托手臂的作用,与探头9不接触,并通过全桥应变片7的应变数值反馈调节,对手腕提供适当的压力,使三个探头9压力维持在最佳取脉压力。 First clamp 4, the second 5 and the third clamp with clamp-6 inch by human foot off position, similarly distributed on the base 2; airbag 3 is fixed to the bottom of the base 2, and by the data acquisition and processing system I feedback control, adjusting the internal pressure of the airbag 3, and the signal to the full bridge strain gauge 7 as a feedback signal to maintain the pressure constant at any value; operation, the human subject is placed on the wrist of the airbag 3, three first probe head 9 by a clamp 4 , the second 5 and the third clamp jig 6 inch contacting human arm, closed, three-foot positions, since the balloon 3 covering the entire bottom of the base 2 of the arm supporting role, not in contact with the probe 9 and by the full-bridge strain gauge 7 strain feedback regulation value, to provide adequate pressure on the wrist, so that three probes pressure was maintained at 9 to take optimum pulse pressure.

[0016] 如图1所示,本发明底座2的顶端可开合,底部和顶部分通过门页相连接,顶部放下时可保证探头9正好接触人体寸关尺三处,且顶部放下后能保证底座2的底部与顶部保持锁死状态。 [0016] As shown in FIG 1, the present invention is to the top of the base 2 may be opened and closed, the bottom and top portions are connected by a door leaf, can ensure the probe body 9 inches just touch when closed the top three feet down, and the top can be put down to ensure that the bottom of the base 2 and the top holding a locked state. 第一夹具4、第二夹具5和第三夹具6限制在底座2顶端上,会随着顶端的开合而抬起或压住人体受测部位,在垂直的方向上的自由度可随意调节,人体受测部位与探头9接触时,引起柔性梁8发生应变,柔性梁8通过第一夹具4、第二夹具5和第三夹具6压紧,第一夹具4、第二夹具5和第三夹具6通过可调紧螺丝与底座顶部连接,并保持竖直方向左右10°的调节范围,可对受测的具体位置进行微调,柔性梁8采用弹性系数适合的某型号弹簧钢,其可多次利用数远超过当前生物薄膜的脉搏测量系统,使用寿命远远大于生物薄膜。 4 first clamp, a second clamp clamps 5 and 6 a third limit on top of the base 2, the top closure as would be lifted or pressed body parts under test, the degree of freedom in the vertical direction can be adjusted when the body parts in contact with the probe under test 9, 8 cause the flexible beam is strained, the flexible beam 8 by a first clamp 4, the second 5 and the third jig pressing jig 6, a first jig 4, and a second clamp 5 an adjustable clamp connected by three screws 6 and top of the base, and to maintain about 10 ° vertical adjustment range, the position can be finely adjusted specifically tested, the flexible beam 8 for the elastic coefficient of a certain type of spring steel, which may be far more than the number of repeated use of the current pulse measuring system biofilm, biofilm is much larger than life. 探头9结构为外部硅胶包裹内部为硬木,模拟中医诊脉时的手指指尖,形状为上宽下窄的半椭球体,硅胶弹性模拟人类手指皮肤弹性。 The finger structure of the probe 9 is wrapped inside the outer silica hardwood, analog TCM fingertip pulse diagnosis, a shape wider at the half-ellipsoid, silicone elastomer simulate a human finger skin elasticity.

[0017] 数据采集和处理系统I由数据采集箱和计算机组成,数据采集箱将传感器得到的电压信号转化为数字信号,并通过数据线输入到计算机中,计算机将数字信号进行分析和运算,最终得到微小振动力(精确度可达到I(T3N)的信号。 [0017] Data acquisition and processing system I by the data collection housing and a computer, the data collection housing to convert the voltage signal obtained by the sensor into a digital signal, and input to the computer via the data line, the computer digital signal analysis and calculation, the final to give a slight vibration force (an accuracy of signal I (T3N) a.

[0018] 气囊3位于底座2底部,工作时托住受测人腕部,工作时,首先要检查安装的由全桥应变片7、柔性梁8和探头9组成的传感器信号是否正常,制造微小振动,使探头9受到扰动,产生电压信号,该电压信号通过数据采集和处理系统I转化为微小应变信号,以此为基础可以准确分析出微小振动源的振动特性是否正常。 [0018] 2 balloon 3 at the bottom of the base, hold the wrist human subject, in operation, to check the installation of a first full bridge strain gauge 7, the flexible beam 9 and the probe 8 consisting of a sensor signal is normal, the manufacturing work fine vibration, the probe 9 is disturbed, generating a voltage signal, the voltage signal through the data acquisition and processing system I into a minute strain signal, as a basis can be accurately analyzed the minute vibration characteristics of the vibration source is normal. 然后,对由全桥应变片7、柔性梁8和探头9组成的传感器进行标定,使用力锤对探头9进行敲击,通过力锤的力信号和通过数据采集处理系统I得到的电压信号,得到相应的灵敏度系数k,将其与电压信号相乘后可以得到有效载荷的力信号,用于具体的人体测试。 Then, the sensor full bridge strain gauges 7, 8 of the flexible beam and a probe consisting of 9 to calibrate the probe using hammer 9 striking by the hammer and the force signal by the data acquisition and processing system I obtained voltage signal, to give the corresponding sensitivity coefficient k, which is the force signal can be multiplied with a payload signal voltage, for a particular human testing.

[0019] 在运行的状态时,将手腕放在底端的气囊3上,手腕的鱼际线与底部的标记线对齐即可,关闭底座2顶端时,整个底座2也将锁死,三个探头9将分别采集寸关尺三处振动信息,并可通过调节第一夹具4、第二夹具5和第三夹具6对具体受测部位进行微调,此时柔性梁8也将处在受力状态,处于预紧状态,现在打开数据采集和处理系统1,开始采集信号,采集30-60S不等,保证整个结构在测量过程中不受到额外的干扰。 When [0019] In the operation state, the wrist on the bottom of the balloon 3, the wrist thenar marker line aligned to the bottom, close to the top of the base 2, the whole of the base 2 will be locked, three probes 9 were collected three inches off the vibration information foot, and can be fine-tuned by adjusting the first clamp 4, the second 5 and the third clamp jig 6 by the specific test sites, when the flexible beam 8 also in the stressed state , in a preload state, now open data acquisition and processing system 1 starts signal acquisition, acquisition range 30-60S, ensure that the entire structure is not subject to additional interference during the measurement. 采集结束后就可以实时得到如图3、图4的脉搏信号图。 After the end of the acquisition can be obtained in real time the pulse signal of FIG. 3, FIG. 4.

[0020] 图3、图4分别为不同人在相同的试验条件下的脉搏振动信号。 [0020] FIG. 3, FIG. 4 are different people pulse vibration signals under the same test conditions.

[0021] 本发明未详细阐述部分属于本领域公知技术。 [0021] The present invention belongs to the part not elaborated techniques known in the art.

[0022] 以上所述,仅为本发明部分具体实施方式,但本发明的保护范围并不局限于此,任何熟悉本领域的人员在本发明揭露的技术范围内,可轻易想到的变化或替换,都应涵盖在本发明的保护范围之内。 [0022] The above are only some of the specific embodiments of the invention, but the scope of the present invention is not limited thereto, and any person skilled in the art within the scope of the invention disclosed can be easily thought variations or replacements It shall fall within the protection scope of the present invention.

Claims (6)

  1. 1.一种高精度人体脉动测量系统,其特征在于包括:数据采集和处理系统(I)、底座(2)、气囊(3)、第一夹具(4)、第二夹具(5)、第三夹具(6)、全桥应变片(7)、柔性梁(8)和三个探头(9);三个沿竖直方向安装的第一夹具(4)、第二夹具(5)和第三夹具(6)通过可调节螺栓安装在底座(I)上,使数据采集和处理系统(I)、底座(2)和气囊(3)能够通过手动上下移动;三个全桥应变片(7)、三个柔性梁(8)和三个探头(9)组成三个相同的应变传感器,其中柔性梁(8)为两头宽,中间窄的形状,全桥应变片(7)贴在柔性梁(8)窄处上下各两片,通过连线构成全桥回路,三个探头(9)安置在三个柔性梁(8)前端,通过第一夹具(4)、第二夹具(5)和第三夹具(6)固定在底座上(2),人体寸、关、尺三处与探头接触,引起柔性梁(8)发生应变,其中柔性梁(8)通过二个螺栓被夹具(4) (5) (6)压紧,夹具(4) (5) (6)通过可调 A pulsating body precision measurement system, comprising: a data acquisition and processing system (the I), a base (2), the balloon (3), a first clamp (4), a second clamp (5), three clamps (6), full-bridge strain gauge (7), the flexible beam (8) and three probes (9); three in the vertical direction of the first clamp mounting (4), a second clamp (5) and three clamps (6) by an adjustable screw mounted on the base (I), so that the data acquisition and processing system (I), a base (2) and the airbag (3) can be moved up and down by manually; three full bridge strain gauge (7 ), three flexible beam (8) and three probes (9) consisting of three identical strain sensors, wherein the flexible beam (8) is two wide, narrow shape of the intermediate, full-bridge strain gauge (7) attached to the flexible beam (8) at the upper and lower two narrow, constituting the full bridge circuit via line, three probes (9) arranged in (8) the front end of three flexible beam, the first clamp (4), a second clamp (5), and third clamp (6) fixed on the base (2), the body inch, closed, three feet in contact with the probe, causing (8) strained flexible beam, wherein the flexible beam (8) by two bolts are clamp (4) (5) (6) pressing, the clamp (4) (5) (6) through an adjustable 螺丝与底座(2)顶部连接;所述第一夹具(4)、第二夹具(5)和第三夹具(6)按人体寸关尺位置,类似地分布在底座(2)上;气囊(3)固定于底座(2)底部,并受数据采集和处理系统(I)反馈控制,调节气囊(3 )内部压力,并以全桥应变片(7 )的信号为反馈信号,使压力保持任意恒值;工作过程中,受测人腕部放置于气囊(3)上,三个探头(9)通过第一夹具(4)、第二夹具(5)和第三夹具(6)接触人体手臂寸、关、尺三处位置,气囊(3)覆盖在整个底座(2 )底部起承托手臂的作用,与探头(9 )不接触,并通过全桥应变片(7 )的应变数值反馈调节,对手腕提供适当的压力,使三个探头(9)压力维持在最佳取脉压力。 The base screw (2) a top; said first clamp (4), a second clamp (5) and a third fixture (6) by the body inch feet off position, similarly distributed on the base (2); airbag ( 3) fixed to the base (2) at the bottom, and by the data acquisition and processing system (I) feedback control, adjusting the internal pressure of the airbag (3), and to signal a full bridge strain gauge (7) is a feedback signal to maintain the pressure of any constant value; operation, the human subject is placed on the wrist of the airbag (3), three probes (9) by a first clamp (4), a second clamp (5) and a third jig (6) in contact with the human arm inch, closed, three-foot position, the airbag (3) from the cover (2) across the bottom of the base supporting arm action, not in contact with the probe (9), and numerical feedback regulation by the strain gage full bridge (7) , to provide adequate pressure on the wrist, so that three probes (9) to take the pressure pulse is maintained at the optimum pressure.
  2. 2.根据权利要求1所述的一种高精度人体脉动测量统,其特征在于:所述探头(9)结构为外部硅胶包裹内部为硬木。 The pulsation of a high precision measurement system body according to claim 1, wherein: said probe (9) inside the external structure silica wrapping hardwood.
  3. 3.根据权利要求1所述的一种高精度人体脉动测量系统,其特征在于:所述底座(2)分为底部和顶部两个部分,底部和顶部分通过门页相连接,顶部放下时可保证探头(9 )正好接触人体寸关尺三处,且顶部放下后能保证底座(2)的底部与顶部保持锁死状态。 The pulsation body a high precision measurement system according to claim 1, wherein: said base (2) into two portions of a bottom and a top, a bottom and a top portion connected by a door leaf, when the top down ensure probe (9) in contact with the body inch off just three feet, and the top down to ensure that the base (2) holding the bottom and top of a locked state.
  4. 4.根据权利要求1所述的一种高精度人体脉动测量系统,其特征在于:所述柔性梁(8)的材料为弹簧钢。 The pulsation body a high precision measurement system according to claim 1, wherein: the material of the flexible beam (8) is a spring steel.
  5. 5.根据权利要求1所述的一种高精度人体脉动测量系统,其特征在于:振动源与探头(9)接触,引起柔性梁(8)发生应变,其中柔性梁(8)通过夹具(4) (5) (6)压紧,夹具(4)(5) (6)通过可调紧螺丝与底座顶部连接,保持竖直方向左右10°的调节范围,柔性梁(8)采用弹性系数适合的某型号弹簧钢,其能够多次利用数远超过当前生物薄膜的脉搏测量系统。 The pulsation body a high precision measurement system according to claim 1, characterized in that: the vibration source and the probe (9) in contact, to cause the flexible beam (8) strained, wherein the flexible beam (8) by clamps (4 ) (5) (6) pressing, the clamp (4) (5) (6) is connected to the top of the base by adjustable screws, holding the left and right vertical adjustment range of 10 °, the flexible beam (8) for elastic coefficient spring steel of a type, which is capable of far more than the number of repeated use of the current pulse measuring system biofilms.
  6. 6.根据权利要求1所述的一种高精度人体脉动测量系统,其特征在于:所述探头(9)需要模拟中医诊脉时的手指指尖,形状为上宽下窄的半椭球体,硅胶弹性模拟人类手指皮肤弹性。 The pulsation body a high precision measurement system according to claim 1, wherein: said probe (9) finger need to simulate the fingertip pulse diagnosis TCM, shape wider at the half-ellipsoid, silica gel elastic simulate human finger skin elasticity.
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CN106236038A (en) * 2016-10-12 2016-12-21 重庆电子工程职业学院 Self-weight pulse feeling machine base

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