TW201121508A - Measuring method and dynamometer using the same - Google Patents

Abstract

A measuring method used for deciding a state of contact between a limb and a sensing surface of a dynamometer is provided. The measuring method includes the following steps. A capacitance is generated according to an area of the sensing surface which is contacted by the limb during a measuring period. After that, if the capacitance is greater than an instant value is determined. Then, when the capacitance is greater than the instant value, the limb is determined to be under an instant touch state during the measuring period with the sensing surface of the dynamometer. When the capacitance is not greater than the first instant value, the limb is determined to be under an instant non-touch state during the measuring period with the sensing surface of the dynamometer.

Description

201121508 , , 1 W3〇5〇r/\ VI. Description of the Invention: [Technical Field] The present invention relates to a measuring method and a muscle force meter using the same, and in particular to a method for determining a limb A method of measuring the contact state during measurement and a muscle force meter using the same. [Prior Art] The muscle strength meter measures the muscle strength of the user's limbs to provide a basis for reference to patients with impaired wind or muscle strength. In general, the dynamometer is in contact with the subject's limbs and exerts force on the dynamometer to obtain the muscle strength of the limb. However, the measurement process of the muscle strength of the limb is dynamic, and the limb system is an irregular surface, so that the state of contact between the limb and the dynamometer is not securely grasped. As a result, the muscle strength measured by the dynamometer may be inaccurate and cannot be used by the user. Therefore, how to provide a muscle strength meter that can increase the accuracy of measurement is a problem for the relevant industry. SUMMARY OF THE INVENTION The present invention mainly provides a measuring method and a muscle force applied thereto, which can determine the contact state of a limb during measurement for reference by a user. 4 According to the present invention, a measuring method is proposed for determining the state of a sensing surface of a limb contact-musculometer. The measurement method includes the following steps. A capacitance value is generated according to the area when the limb contacts the sensing surface during a measurement period. Next, it is determined whether the capacitance value is greater than a first-instantaneous threshold. Lack 3 201121508 wJooor/v When the value is greater than the first-instantaneous value, it is determined that the limb is in the measurement period: in the _ _ temple contact state. When the capacitance value is not greater than the first instantaneous threshold, it is determined that the limb is in an instantaneous non-contact state during the measurement period. According to the present invention, a muscle strength meter includes a housing, a load sensing board, a timer, a measuring circuit, and a processor. The load cell is disposed in the housing. The sensing plate is spaced apart from the load cell by a spacing & has a sense, face: timer for providing a measurement period. The measuring circuit electrically couples the weight and the sensing plate' to contact the sensed H capacitance value according to a limb during the measurement period. The processor is electrically sensitive to determine if the capacitance value is greater than a first-instantaneous threshold. When the capacitance value is 1___5, the processing 11 determines that the limb is in the quantity _ section is in the 2-axis touch state. When the capacitance value is not greater than the first instantaneous threshold, the processor determines that the limb is in a momentary non-contact separation during the measurement period. In order to make this correction (4) Wei Mingming (4) understand the slogan of the syllabus, and with the accompanying drawings, the detailed description is as follows: [Embodiment] The detailed description of the A of the present invention is known to the skilled person. Several embodiments will be described below in connection with the present invention, in conjunction with the graph measurement method and the muscle force meter using the same. However, the drawings and texts are for illustrative purposes only, and the scope of protection is limited. First Embodiment FIG. 1 is a flow chart showing a measurement method according to FIG. 1 and FIG. 2A to FIG. 2 according to the present invention. FIG. 1 is a flowchart of a measurement method according to the first embodiment and the second embodiment.

, IW^()8()PA The frequency versus time of the first embodiment corresponding to the limb contact muscle strength meter is shown in Fig. 2B (4). The relationship with time and the 2C diagram show the state relationship diagram determined by the measurement method in the T-th diagram and the capacitance value in the 2B diagram. u ]

In the present embodiment, the measurement method determines the state of the sensing surface of the limb in contact with the muscle force meter during the measurement period, and the magnitude of the capacitance value is exemplified by the corresponding solution. It should be understood by those skilled in the art that the manner in which the capacitance value is obtained is not limited to the examples herein. The measurement method includes the following steps. The measuring towel's contact with the muscles of the muscles in the measurement period Ti~Tn according to the limbs, and '丨 produces several capacitance values. In general, the muscle strength meter itself has a parasitic capacitance value before the limb is not in contact with the force sensing surface. = The capacitance value generated in step S1Q1 is the sum of the sensing surface via the limb and the capacitance value and the parasitic capacitance value. In this embodiment, the electric frequency is known, and the frequency is inversely proportional to the capacitance value. The larger the frequency is, the larger the frequency is, and the smaller the frequency corresponding to the frequency is, the more the capacitance value corresponding to the frequency is generated. A plurality of capacitance values correspond to the frequency fluctuations f 1 to f η of the τ. It can be obtained by using the value of the g g g (4), as shown in the 2β. The capacitance value corresponding to the capacitance value ^: / S (10) is judged to correspond to the electric value VI of the measurement period Tn as "1 Thunder is performed at the first inter-instantaneous value W. Preferably, the first instantaneous threshold. Electric: value ^ value moving average minus - first - preset instantaneous threshold value of the differential electric valley moving average is earlier than the measurement period Τ η 201121508 I VVJUOVJr / \ ' * These measurement period Ti ~ The average value of the capacitance values Ci to Cn-1 corresponding to Tn-1. As a result, the influence of external interference on the judgment result can be reduced by the application of the moving average of the capacitance value. When the capacitance value Cn is not greater than the first instantaneous threshold VI, step S105a is subsequently performed to determine that the limb is in the instantaneous non-contact state S1 during the measurement period Τn. When the capacitance value Cn is greater than the first instantaneous threshold VI, step S105b is subsequently performed to determine that the limb is in the instantaneous contact state S2 during the measurement period Τn. In the present embodiment, the capacitance value Cn is greater than the first instantaneous threshold VI, and therefore, the limb is in the instantaneous contact state S2 during the measurement period ,, as shown in Fig. 2C. In order to further understand the case where the limb is in the transient contact state S2, the instantaneous contact state S2 of the present embodiment may include the transient bad contact state S21 and the instantaneous good contact state S22. When it is determined that the limb is in the transient contact state S2 in the measurement period S2 (step S105b), step S107 is next performed to determine whether the capacitance value Cn is greater than the second instantaneous threshold value V2. Preferably, the second instantaneous threshold value V2 is a difference between the capacitance value moving average (the average value of the capacitance values Ci~Cn·1) minus the second preset instantaneous threshold value. When the capacitance value Cn is not greater than the second instantaneous threshold value V2, step S109a is performed to determine that the limb is in the transient poor contact state S21 during the measurement period Τn. When the capacitance value Cn is greater than the second instantaneous threshold value V2, step S109b is performed to determine that the limb is in the instantaneous good contact state S22 during the measurement period Τn. In this embodiment, since the capacitance value Cn is greater than the second instantaneous threshold value V2, the limb is in the instantaneous good contact state during the measurement period 2011η 201121508

, , TW5686PA S22, as shown in Figure 2C. In this way, the user can judge the reliability of the muscle strength measurement performed by the limb during the measurement period 藉 by judging the result. For the second embodiment, please refer to FIG. 3 and FIG. 3, FIG. 3 is a schematic diagram of a muscle force meter according to a preferred embodiment of the present invention, and FIG. 3 is a block diagram showing the strength meter of the third figure. Figure. In the present embodiment, the user performs the muscle strength measurement using the muscle strength meter 300 in the third and third figures. • The muscle strength meter 300 includes a housing 310, a load cell 320, a sensor board 330, a timer 340, a metrology circuit 350, and a processor 360. The load cell 320 is disposed within the housing 310. The sensing plate 330 is spaced apart from the load cell 320 by a distance d and has a sensing surface 330s. The timer 340 is used to provide several measurement periods. In the present embodiment, the timer 340 is, for example, interrupted every other measurement period when the user starts to measure the muscle strength using the muscle strength meter 300 to provide a measurement period. The measurement circuit 350 is electrically coupled to the load cell 320 and the sensing plate 330. The processor 360 is electrically coupled to the measurement circuit 350. The sensing plate 330 of the present embodiment includes, for example, a metal plate 331 and an insulating pad 332. The insulating pad 332 is disposed on the metal plate 331 and exposed outside the casing 310. The insulating pad 332 is for contacting the limb such that the limb system contacts the sensing surface 3 3 s via the insulating 塾 3 3 2 . In addition, preferably, the strength meter 300 may further include an insulator 380 disposed between the sensing plate 330 and the load cell 320, that is, at the spacing d, to increase the capacitance value to increase the accuracy in the measurement. The muscle strength meter 300 of the present embodiment determines the state of the limb contact sensing surface 330s by applying the measuring method in Fig. 4. Referring to Figure 4, a flow chart of a measurement method in accordance with a second embodiment of the present invention is shown. 7 5 201121508 νν:)〇〇〇^/γ Interrupt. When the processing 1 360 determines that the leaf date "^ determines whether the tenth generation 340 is in the step S403. When the processor 360 determines that the timer 〇, 夺 'execution step execution step S401. ° interrupts' repeats in this embodiment, the steps The S4〇3 system includes S101~S10〇9b. Step S101 is performed by measuring 7th of the electricity: the corresponding capacitance value is generated by the frequency acquisition; the external:::_ is executed by the processing term to determine Limb 2, in instantaneous non-contact (four), transient bad contact shape ^ good contact state S22. Then, in step S405, 庐搜哭,,,,,,,,,,,,,,,,,,,,,,,,,,,, When the force measurement is completed, step S407 is performed. When the muscle strength measurement is not completed, step S401 is repeatedly performed. In general, the time for measuring muscle strength by muscle strength is about seconds. In the time, step S4 is performed step S4〇5 repeatedly until the muscle strength measurement is completed. Here, the muscle force measurement is performed for 3 seconds, including the measurement period Ti~Τη2 in FIG. 5A. In this way, in step S403, the s measuring circuit 35 is obtained by A plurality of capacitance values Ci~Cn+2 (as shown in FIG. 5B) s should be generated in the frequency fi, fn+2 of the measurement period Τι~Tn+2, and the processor 36 determines the limb in the measurement period Ti. The state of the Tn+2 contact sensing surface 330s is as shown in Fig. 5C. Next, in step S4, the processor 360 determines the overall contact state. Please refer to Fig. 6, which shows the fourth. A flowchart of the steps of determining the overall contact state is performed in the figure. Step S407 includes step S60 and S607b.

TW5686PA In step S601, the processor 360 determines whether the number of times the limbs are in the instantaneous non-contact state S1 during the measurement periods Ti~Tn+2 is greater than the first overall preset threshold. When the number of times is greater than the first overall preset threshold, step S603a is performed to determine by the processor 360 that the limbs are in an overall non-contact state for the measurement periods Ti~Tn+2. When the number of times is not greater than the first overall preset threshold, step S603b is performed to determine by the processor 360 that the limbs are in the overall contact state for the measurement periods Ti~Tn+2. Preferably, in order to further understand the situation when the limb is in an overall contact state, the overall contact state of the embodiment may include a total measurement success state and an overall measurement failure state. When the limbs are in the overall contact state (S603b) during the measurement period Ti~Tn+2, step S605 is performed to determine the instantaneous non-contact state S1 and the transient contact state S21 by the processor 360. Whether the total number of times is greater than the second overall preset threshold. When the total number of times is greater than the second overall preset threshold, step S607a is performed to determine, by the processor 360, the limbs for the measurement periods Ti~Tn+2. • The system is in an overall measurement failure state. When the total number of times is not greater than the second overall preset threshold, the processor 360 performs step S607b to determine that the limbs are in the overall measurement success state during the measurement periods Ti~Tn+2. Through the above steps, the state in which the limb is in contact with the sensing surface 3 3 s of the muscle force meter 300 in the measurement period Ti~Tn+2 is known. Further, the muscle meter 300 (as shown in Figures 3A and 3B) may further include a display 390 for displaying the state of the limb contact sensing surface 330s determined by the processor 360 for reference by the user. Measurement method and application muscle thereof disclosed in the above embodiments of the present invention

' I 201121508 i w^o«〇pa force meter, which monitors the contact state of the sensing surface of the limb and the muscle strength meter for the user's reference to confirm the accuracy of the measurement of muscle strength. In addition, the measurement method provided by the present embodiment and the contact state provided by the muscle force meter of the same can be further used as the basis for the strength compensation of the muscle strength measurement to improve the accuracy of the measured muscle strength. In the above, the present invention has been disclosed in the above preferred embodiments, but it is not intended to limit the present invention. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. The scope of the daily protection of this issue is subject to the definition of the scope of the application patent attached. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1A shows a flow according to a measurement method according to a first embodiment of the present invention. FIG. 2 is a diagram showing a frequency corresponding to a limb contact muscle force meter according to a first embodiment of the present invention. A diagram of time. The relationship between the state and time is determined by the capacitance value of the frequency in Fig. 2A and the time (C) of the second figure (4), which is determined by the measurement method in the i-th diagram and the capacitance value in the first sinking circle. Fig. 3A is a diagram showing a muscle strength meter not according to a preferred embodiment of the present invention. Figure 3B depicts a block diagram of the muscle strength meter in Figure 3A. Figure 4 (4) Flow of the measurement method according to the second embodiment of the present invention 10 201121508

I Fig. 5A is a graph showing the relationship between frequency and time corresponding to the limb contact muscle dynamometer according to the second embodiment of the present invention. Fig. 5B is a graph showing the relationship between the capacitance value converted from the frequency in Fig. 5A and the time. ^ Fig. 5C is a diagram showing the relationship between the state determined by the measurement method in Fig. 4 and the capacitance value of the fifth ? map. Fig. 6 is a flow chart showing the overall contact state in Fig. 4. Step

[Main component symbol description] 300: Muscle strength meter 310: Housing 320: Load cell 330: Sensing plate 330s: Sensing surface 331: Metal plate

332: Insulation pad 340 = Timer 350 : Measuring circuit 360 : Processor 380 : Insulator 390 : Display

Ci~Cn+2: Capacitance value 51: Instantaneous non-contact state 52: Instantaneous contact state 201121508 I W3050KA ' * 521 : Instantaneous bad contact state 522 : Instantaneous good contact state S10 Bu S109b, S401 to S407, S60 Bu S607b: Flow step

Ti~Tn+2 : ιέ period VI: first instantaneous threshold V2: second instantaneous threshold d: spacing fi~fn+2: frequency

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Claims (1)

201121508 , 1 W^OfiOKA VII, the scope of application for patent ι · - the measurement method 'to determine - the state of the limb contact - the strength of one of the sensing surface, the measurement method includes: According to the limb in-measurement The area when the time is in contact with the sensing surface generates a capacitance value; determining whether the capacitance value is greater than a first instantaneous threshold; and when the capacitance value is greater than the first instantaneous threshold, determining the limb at the f The measuring period is in a momentary contact state; and ▲ when the capacitance value is not greater than the first instantaneous threshold, determining that the limb is in a transient non-contact state during the δ Hai measurement period. 2. The measuring method according to claim 1, wherein in the step of generating, a plurality of capacitance values are generated according to an area of the limb when the sensing surface contacts the sensing surface during a plurality of measurement periods, In the step, the first instantaneous threshold value is a capacitance value moving average minus - the first preset instantaneous value = the difference value of the valve = the moving value of the capacitance value is earlier than the measured time period of the determination The average of the capacitance values corresponding to the measurement periods. . 3. The measuring method according to claim 2, wherein the instantaneous contact state comprises: a transient bad contact state and a __instantaneous good connection, when determining that the limb is in the instantaneous contact state during the measuring period The measurement method further includes: determining whether the 5H grid value is greater than a second instantaneous threshold; 曰 When the capacitance value is greater than the second instantaneous threshold, determining the limb to measure In the instantaneous good contact state; and... when the capacitance value is not greater than the second instantaneous threshold, it is determined that the limb is in the transient poor contact state during the I measurement period. 13 201121508 I W^〇6〇pa . The measuring unit described in item 3 of the patent application scope The second instantaneous threshold value is the difference between the capacitance value, and the threshold value. (4) Decimal subtraction—the second preset instantaneous method as described in item 3 of the claim (4), wherein the judgment == is performed repeatedly to determine the limb in the quantity =; The instantaneous non-contact state, the number of non-contact cores in the segment (4) is greater than a first overall preset threshold; when the number is greater than the first-total pre-off value, the limb is determined to be The measurement period is in an "overall non-contact state"; and when the number of times is not greater than the first overall preset threshold, it is determined that the limb is in an overall contact state during the measurement period. 6. The measuring method according to claim 5, wherein the overall contact state comprises: an overall measurement success state and an overall measurement failure state, and the step of determining determines that the limb is in contact during the measurement periods. The state of the sensing surface further includes a plurality of transient bad contact states. When it is determined that the limb is in the overall contact state during the measurement period, the measuring method further comprises: determining that the limb is at the moments Whether the non-contact state and the total number of the short-term contact states are greater than a second overall preset threshold; when the total number of times is greater than the second overall preset threshold, determining the limb in the measurement period In the overall measurement failure state; and when the total number of times is not greater than the second overall preset threshold, determining that the limb is in the overall measurement success state during the measurement period. 201121508 1 W^O«〇KA . » 7. A muscle strength meter comprising: a housing; a load cell 'disposed in the housing; - a sensing plate' spaced apart from the load cell and having a sensing surface; a timer for providing a measuring period; - a measuring circuit, an electrical quantity _ the load element and (4) a measuring plate for contacting the sensing surface according to a limb during the measuring period The area, the capacitance value is generated; and the processor is electrically coupled to the measurement circuit for determining whether the capacitance value is greater than a -th instantaneous threshold, when the capacitance value is greater than the first instantaneous threshold When the δH processor determines that the limb is in a momentary contact during the measurement period, the state determines that when the capacitance value is not greater than the first instantaneous threshold, the processor determines that the limb is in the measurement period - Instantaneous non-contact state. 8. The strength meter according to claim 7, wherein the meter 2, the plurality of measuring periods, the measuring circuit is configured to generate a plurality according to the area of the body after the contact with the flap. a capacitance value, the first instantaneous threshold value is a capacitance value moving average minus a value of a threshold value of the threshold value. The capacitance value moving average is earlier than the measurement period of the measurement period Corresponding to the average value of the capacitance values. The muscle strength meter of claim 8, wherein the instantaneous contact state comprises - instantaneous bad contact state and - instantaneous good contact H ' when the processor determines When the limb is in the state of the measurement period, the processor is further configured to determine whether the capacitance value is greater than one! (10) Instant: Threshold value 'When the capacitance value is greater than the second instantaneous threshold value, the location The benefit determines that the limb is in the instantaneous good contact state during the measurement period. When the capacitance value is not greater than the second instantaneous threshold, the processor determines that the limb is in the measurement period. In this transient bad contact state. 10. The muscle strength meter of claim 9, wherein the second instantaneous threshold value is a difference between the moving value of the capacitance value minus a second predetermined instantaneous threshold value. The muscle strength meter of claim 9, wherein the processor determines that the state in which the limb contacts the sensing surface during the measuring period comprises a plurality of instantaneous non-contact states, and the processor is further configured to determine the limb Whether the number of times in the instantaneous non-contact state is greater than a first overall preset threshold, and when the number is greater than the first overall preset threshold, the processor determines the limb to be measured The time period is in an overall non-contact state, and when the number of times is not greater than the first overall preset threshold, the processor determines that the limb is in an overall contact state during the measurement period. The muscle strength meter of claim 11, wherein the overall contact state comprises an overall measurement success state and an overall measurement failure state, and the processor determines a state in which the limb contacts the sensing surface during the measurement periods Included in the plurality of transient bad contact states, when the processor determines that the limb is in the overall contact state during the measurement period, the processor is further configured to determine that the limb is in the instantaneous non-contact state and the moments Whether the total number of bad contact states is greater than a second overall pre-no threshold, and when the total number of times is greater than the second overall preset threshold, the process 2 determines that the limb is at the total amount during the measurement period If the total number of times is not greater than the second overall preset threshold, the processor determines that the limb is in the overall measurement success period in the measurement period 201121508 1 w^〇6〇r/\ 13. The muscle strength meter of claim 7, further comprising: an insulator disposed between the sensing plate and the load cell. 14. The muscle strength meter of claim 7, wherein the sensing plate comprises a metal plate having the sensing surface. 15. The strength meter of claim 7, wherein the sensor panel comprises: a metal plate 'having the sensing surface; and a 纟 缘 rim pad disposed on the metal plate and exposed outside the casing, and the X, ' rim pad is used to contact the limb, so that the limb system is The insulating mat contacts the sensing surface. 1_6 is similar to the strength meter described in claim 7 of the patent scope, and further includes: a thorn; a /11' to indicate that the limb is determined by the processor. 17