CN113532501A - Body surface sensor fixing device - Google Patents
Body surface sensor fixing device Download PDFInfo
- Publication number
- CN113532501A CN113532501A CN202110626037.5A CN202110626037A CN113532501A CN 113532501 A CN113532501 A CN 113532501A CN 202110626037 A CN202110626037 A CN 202110626037A CN 113532501 A CN113532501 A CN 113532501A
- Authority
- CN
- China
- Prior art keywords
- sensor
- body surface
- unit
- fixing
- ratio
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000012360 testing method Methods 0.000 claims abstract description 73
- 239000002131 composite material Substances 0.000 claims abstract description 60
- 238000000034 method Methods 0.000 claims abstract description 27
- 238000012544 monitoring process Methods 0.000 claims abstract description 26
- 238000001514 detection method Methods 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims description 41
- 239000004800 polyvinyl chloride Substances 0.000 claims description 19
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 18
- 229920000742 Cotton Polymers 0.000 claims description 14
- 238000004364 calculation method Methods 0.000 claims description 11
- 239000004677 Nylon Substances 0.000 claims description 10
- 229920001778 nylon Polymers 0.000 claims description 10
- 238000003825 pressing Methods 0.000 claims description 10
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 16
- 239000010410 layer Substances 0.000 description 45
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 10
- 239000000741 silica gel Substances 0.000 description 9
- 229910002027 silica gel Inorganic materials 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 238000011156 evaluation Methods 0.000 description 6
- 230000035945 sensitivity Effects 0.000 description 6
- 238000004422 calculation algorithm Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 5
- 239000000956 alloy Substances 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 238000012549 training Methods 0.000 description 3
- 230000002238 attenuated effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000009958 sewing Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 206010040007 Sense of oppression Diseases 0.000 description 1
- 210000001015 abdomen Anatomy 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 210000004209 hair Anatomy 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000009323 psychological health Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 210000004243 sweat Anatomy 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
- G01D11/30—Supports specially adapted for an instrument; Supports specially adapted for a set of instruments
Abstract
The invention provides a body surface sensor fixing device, comprising: the device comprises a fixing unit, a composite belt, a monitoring unit, an intelligent unit and a calculating unit; the fixing unit is used for fixing the sensor; the composite belt is used for fixing the fixing unit on the body surface; the monitoring unit is used for acquiring body surface stress indexes; the intelligent unit is used for determining an instantaneous threshold value; the calculating unit is used for acquiring a first ratio; the first ratio is used for indicating the stress state between the fixing unit and the body surface. According to the body surface sensor fixing device provided by the invention, the composite belt is used for fixing the sensor on the body surface of a human body, the stress state of the body surface is represented by the ratio of the body surface stress index to the instantaneous threshold value, so that a test operator can adjust the tightness degree of the composite belt, the fixing requirement of a tested group with different physical sign parameters can be met, the body surface of the human body is not damaged, the tested comfort of the tested person is improved, meanwhile, the sensor is effectively prevented from inclining and falling off in the test process, and the accuracy of a detection result is further ensured.
Description
Technical Field
The invention relates to the field of intelligent monitoring, in particular to a body surface sensor fixing device.
Background
When vehicles, ships, manned aircrafts and the like are used, the riding environment vibrates, and the physiological and psychological health of human bodies in the vibration environment is affected. Therefore, human factors engineering issues in vibration environments are of increasing concern. The sensor can effectively analyze the human body vibration response characteristics by collecting physical quantities such as human body acceleration, displacement, force and the like in a vibration environment, so that the sensor is widely applied to human body vibration, human-computer interaction simulation and other researches in the human factor engineering field.
At present, in the human body vibration test process, a sensor is generally fixed on the leg, the hip, the abdomen, the chest, the head and the like of a tested person by a tape adhering method, but because hairs exist on the surface layer of the human body skin and sweat is easily secreted, the sensor is not easily fixed on the body surface of the human body, and particularly the sensor is easy to incline and fall off in a vibration environment, so that the accuracy of vibration test data acquisition can be influenced. The sensor is fixed on the body surface of a human body and also needs to meet the requirement of comfort, the body surface is easy to be damaged by the adhesive tape or glue, the protection principle and the test ethical requirement of the human body are not met,
meanwhile, because the test period of the human body vibration test is long, the sensor needs to be fixed on the body surface of the human body for a long time, the tested person often has local body discomfort, and the accuracy of the subjective comfort evaluation test of the tested person is further influenced.
At present, a pre-test static fixing mode is generally adopted for fixing a human body surface sensor, but the reliability of a fixing device in the test process is difficult to guarantee due to the influence of vibration excitation, the fixing device is easy to loose in the test process, and the fixing parameters of the fixing device are easy to fluctuate due to the influence of vibration amplitude-frequency characteristics, so that the fixing parameters of the fixing device need to be dynamically adjusted when the state of the sensor is monitored.
Disclosure of Invention
Aiming at the problems in the prior art, the embodiment of the invention provides a body surface sensor fixing device, which aims to solve the problem of sensor fixing and the problem of fixed state monitoring.
The invention provides a body surface sensor fixing device, comprising: the device comprises a fixing unit, a composite belt, a monitoring unit, an intelligent unit and a calculating unit; a fixing unit for fixing the sensor; the composite belt is fixedly connected with the fixing unit and is used for fixing the fixing unit on the body surface; the monitoring unit is used for acquiring a body surface stress index between the fixing unit and the body surface; the intelligent unit is used for determining an instantaneous threshold value in a stress frequency curve according to the vibration amplitude frequency of the vibration table; the calculation unit is used for acquiring a first ratio of the body surface stress index to the instantaneous threshold; the first ratio is used for indicating the stress state between the fixing unit and the body surface.
The body surface sensor fixing device provided by the invention comprises an intelligent unit and a vibration table, wherein the intelligent unit is also used for generating a stress frequency curve according to an effective body surface stress index and the vibration amplitude frequency of the vibration table in a pre-test based on a mean value clustering method; the stress frequency curve includes a stress index mean-frequency curve at a plurality of vibration amplitudes.
According to the body surface sensor fixing device provided by the invention, the monitoring unit is also used for monitoring the transverse stress index, the longitudinal stress index and the vertical stress index of the sensor.
According to the body surface sensor fixing device provided by the invention, the calculation unit is also used for acquiring a second ratio of the transverse stress index to the fixed threshold, a third ratio of the longitudinal stress index to the fixed threshold and a fourth ratio of the vertical stress index to the fixed threshold; the second ratio is used for indicating the stress state between the sensor and the fixed unit in the transverse direction; the third ratio is used for indicating a stress state between the sensor and the fixed unit in the longitudinal direction; the fourth ratio is used for indicating the stress state between the sensor and the fixed unit in the vertical direction.
According to the body surface sensor fixing device provided by the invention, the body surface sensor fixing device further comprises: an alarm unit; generating first alarm information under the condition that the first ratio exceeds a preset range; and generating second alarm information under the condition that any one of the second ratio, the third ratio or the fourth ratio exceeds a preset value.
According to the body surface sensor fixing device provided by the invention, the composite belt comprises a nylon material layer, a polyvinyl chloride material layer and a cotton material layer; one end face of the polyvinyl chloride material layer is attached to the nylon material layer; the other end face of the polyvinyl chloride material layer is attached to the cotton material layer; the end face of the cotton material layer departing from the polyvinyl chloride material layer is used for being attached to the body surface.
According to the body surface sensor fixing device provided by the invention, the fixing unit comprises a shell; the shell is a hollow structure body with an opening at the top; the sensor is positioned in the shell, and the detection end of the sensor is positioned at the opening at the top; the outer surface of the shell is fixedly connected with the composite belt.
According to the body surface sensor fixing device provided by the invention, the shell comprises a body and a baffle, wherein the baffle is in non-fixed connection with the body; the side surface of the body is provided with an opening for placing the sensor into the body from the opening; and a baffle for sealing the opening of the body in a state that the sensor is placed in the body.
According to the body surface sensor fixing device provided by the invention, the fixing unit further comprises an elastic fastener; the elastic fastener is used for limiting the displacement of the sensor in the direction vertical to the bottom of the shell.
According to the body surface sensor fixing device provided by the invention, the elastic fastener comprises a pressing plate and a spring assembly; the first end of the spring assembly is fixedly arranged on the inner side of the inner wall of the shell, and the second end of the spring assembly is fixedly connected with the end face of the pressure plate; the end face of the pressure plate, which faces away from the spring assembly, is used for fitting the outer surface of the sensor.
According to the body surface sensor fixing device provided by the invention, the composite belt is used for fixing the sensor on the body surface of a human body, the stress state of the body surface is represented by the ratio of the body surface stress index to the instantaneous threshold value, so that a test operator can adjust the tightness degree of the composite belt, the fixing requirement of a tested group with different physical sign parameters can be met, the body surface of the human body is not damaged, the tested comfort of the tested person is improved, meanwhile, the sensor is effectively prevented from inclining and falling off in the test process, and the accuracy of a detection result is further ensured.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of a body surface sensor fixing device provided by the present invention;
FIG. 2 is a schematic diagram of a sensor according to the present invention;
FIG. 3 is a schematic structural diagram of a fixing unit provided in the present invention;
FIG. 4 is a schematic flow chart of a mean clustering algorithm provided in the present invention;
FIG. 5 is a schematic diagram of the arrangement position of a strain gage provided by the present invention;
FIG. 6 is a schematic view of a composite tape construction provided by the present invention;
FIG. 7 is a schematic view of the overall structure of a body surface sensor fixing device provided by the present invention;
FIG. 8 is a front view of a body surface sensor fixation device provided by the present invention;
FIG. 9 is a top view of a body surface sensor fixation device provided by the present invention;
wherein the reference numerals are:
01: a signal line interface; 02: the sensor body 03: a sensor base;
11: a housing; 111: a body; 112: a baffle plate;
12: an elastic fastener; 121: a spring assembly; 122: pressing a plate;
21: a nylon material layer; 22: a layer of PVC material; 23: a layer of cotton material;
24: a belt retracting clip; 31: a first strain gauge module; 32: and a second strain gauge module.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that in the description of the embodiments of the present invention, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The terms "upper", "lower", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
A body surface sensor fixing device provided by an embodiment of the invention is described below with reference to FIGS. 1 to 9.
FIG. 1 is a schematic structural diagram of a body surface sensor fixing device provided by the present invention, as shown in FIG. 1, including but not limited to: the device comprises a fixing unit 10, a composite belt 20, a monitoring unit 30, an intelligent unit 40 and a calculating unit 50; a fixing unit 10 for fixing the sensor; the composite belt 20 is fixedly connected with the fixing unit 10 and used for fixing the fixing unit 10 on the body surface; the monitoring unit 30 is used for acquiring a body surface stress index between the fixing unit 10 and the body surface; the intelligent unit 40 is used for determining an instantaneous threshold value in a stress frequency curve according to the vibration amplitude frequency of the vibration table; the calculation unit 50 is used for acquiring a first ratio of the body surface stress index to the instantaneous threshold; the first ratio is used to indicate a force state between the fixing unit 10 and the body surface.
In the process of human body vibration test, the vibration amplitude frequency of the vibration table can be directly read through the vibration table control equipment. The amplitude frequency of the vibration includes the amplitude of the vibration and the frequency of the vibration.
The vibration test is divided into a pre-test and a formal test for different tested persons. In the process of the preliminary test, the body surface stress index collected by the monitoring unit 30 is used for constructing a stress frequency curve according to the vibration amplitude frequency of the vibration table. In the formal test process, the body surface stress index and the vibration amplitude frequency of the vibration table collected by the monitoring unit 30 are used for monitoring the fixed state of the sensor in the formal human body vibration test, so that the test operator is prompted to adjust the tightness degree of the composite belt 20 in time, and the accuracy of the data collected in the test process is further ensured.
Fig. 2 is a schematic structural diagram of a sensor according to the present invention, fig. 3 is a schematic structural diagram of a fixing unit according to the present invention, and as shown in fig. 2 and fig. 3, a sensor body 02 is fixed on a sensor base 03, a signal line interface 01 of the sensor is exposed outside the fixing unit 10, and the sensor base 03 is disposed in the fixing unit 10 to fix the sensor.
Alternatively, at both sides of the outer surface of the fixing unit 10, there are ring structures fixedly connected to the fixing unit 10, respectively, so that the composite tape 20 is fixedly connected to the fixing unit 10 through the ring structures. Finally, the fixing unit 10 may be fixed to the body surface of the human subject by the composite tape 20.
For example: is fixed on the arm, the leg, the head and other areas of the tested person.
The composite band 20 may be an elastic or inelastic structure with a band-receiving clip.
The monitoring unit 30 comprises a first strain gauge module 31, and the first strain gauge module 31 is located between the fixing unit 10 and the body surface and used for monitoring the body surface pressure index of the sensor fixing device on the body surface so as to evaluate the fixing reliability and comfort of the sensor fixing device.
In the preparation stages of the preliminary test and the formal test, the test operator firstly sets the initial value of the instantaneous threshold value, and compares the initial value with the body surface stress index monitored by the first strain gauge module 31, so that the test operator can conveniently judge whether the composite belt 20 is too tight, too loose or appropriate in the static fixed state according to the comparison result.
The initial value of the instantaneous threshold can be determined according to GB/T13441.1-2007 Evaluation of Mechanical vibration and shock-exposure of human body to whole body vibration, ISO 2631-5-2004 Mechanical vibration and shock-Evaluation of human exposure to human tissue-body vibration, ISO/TR 10687-2012 Mechanical vibration-Description and determination of treated tissue with reference to tissue-body vibration.
In a formal test, the intelligent unit 40 determines an instantaneous threshold value in a stress amplitude-frequency curve according to the vibration amplitude frequency of the vibration table. The stress amplitude-frequency curve comprises a stress index mean value-frequency curve.
The calculation unit 50 calculates a ratio of the body surface stress index obtained by the monitoring unit 30 and the instantaneous threshold determined by the intelligent unit 40 to obtain a first ratio, wherein the first ratio is used for indicating the stress state between the fixing unit and the body surface.
Optionally, the test operator may determine whether to adjust the tightness of the composite tape 20 according to the obtained first ratio.
Optionally, the body surface sensor fixing device comprises an independent and detachable energy storage power supply, the device can be independent of independent power supply of vibration equipment such as a vibration table and the like, power supply voltage and current are stable, data acquisition accuracy of sensing equipment such as a strain gauge and the like can be obviously improved, and meanwhile, the energy storage power supply is detachable, so that subsequent power supply replacement, equipment inspection and equipment maintenance are facilitated.
According to the body surface sensor fixing device provided by the invention, the composite belt is used for fixing the sensor on the body surface of a human body, the stress state of the body surface is represented by the ratio of the body surface stress index to the instantaneous threshold value, so that a test operator can adjust the tightness degree of the composite belt, the fixing requirement of tested groups with different physical sign parameters can be met, the body surface of the human body is not damaged, the tested comfort of the tested person is improved, meanwhile, the sensor is effectively prevented from inclining and falling off in the test process, and the accuracy of a detection result is further ensured.
Based on the above embodiment, as an optional embodiment, the stress amplitude-frequency curve is generated based on a mean value clustering method according to the stress index mean value and the characteristic frequency amplitude; the stress amplitude-frequency curve comprises a stress index mean value-frequency curve under a plurality of amplitudes.
The vibration amplitude value can not be changed under the general condition, but the vibration amplitude value of the vibration table can be changed along with the sudden reasons that the sitting posture of a tested person can be adjusted and the like, the vibration amplitude value change caused by the sudden situation can be coped with by manufacturing stress index mean value-frequency curves under a plurality of amplitude values, and the accuracy of the measured data in the vibration test is further ensured.
The intelligent unit 40 analyzes and calculates the change condition of the stress index under different vibration frequencies and amplitudes through a mean value clustering algorithm so as to realize real-time adjustment of the tightness degree of the composite belt 20 according to the instantaneous threshold value.
Because the stress index changes along with the change of the vibration amplitude-frequency characteristic, but the stress index has certain similarity in numerical change, a stress amplitude-frequency curve can be obtained by combining a mean value clustering algorithm, and an instantaneous threshold corresponding to the vibration frequency is further determined from a stress index mean value-frequency curve under the current amplitude so as to meet the real-time monitoring requirement of the vibration environment.
Firstly, in the pre-test process, the body surface stress indexes of the vibration table under different vibration amplitude frequencies are collected, and under the condition that the proper tightness degree of the composite belt 20 used by a tested person is determined, the stress index under the current vibration amplitude frequency is effective; under the condition that the composite belt 20 currently used by the tested person is determined to be too tight or too loose, the stress index under the current vibration amplitude frequency is invalid; then, a data set is constructed from all valid body surface force indices.
The data set is then divided into sets of raw data based on the different vibration amplitudes of the vibration table.
Wherein, under the same vibration amplitude, k integer values are set as the initial centroid { mu ] according to the vibration frequency1，μ2，…，μkUsing the position of the body surface stress index monitored by the first strain gauge module 31 as a measurement point, and taking m measurement points as m training samples { x }(1)，x(2)，…，x(m)And dividing according to the similarity of the stress indexes under different vibration frequencies, and repeatedly distributing the body surface stress index measured by each measuring point to the nearest mass center to form k clusters.
Fig. 4 is a schematic flow chart of a mean value clustering algorithm provided by the present invention, and as shown in fig. 4, firstly, any group of original data is preprocessed based on the mean value clustering algorithm to obtain data. Taking the body surface stress index measured by each measuring point as a sample, and regarding the cluster c to which each sample i belongs(i)The calculation formula is as follows:
c(i)＝arg minj||x(i)-μj||2；
further, data similarity calculation is performed. Specifically, for each cluster j, the centroid μ of each cluster needs to be repeatedly calculatedjAnd observing whether the centroid changes, wherein the centroid mujThe calculation formula of (2) is as follows:
wherein x is(i)Is the ith training sample, and m is the number of training samples.
Further, clustering is carried out to obtain a clustering result. Selecting Euclidean distance as a similarity index, wherein a clustering square sum minimization formula is as follows:
and checking the deviation degree of the centroid in each cluster, extracting the sample causing the excessive centroid deviation from the current cluster under the condition of the excessive centroid deviation, reallocating the sample to the adjacent cluster in the centroid deviation direction, checking the reallocated centroid deviation, and finishing clustering when no (or minimum number) object is reallocated to different clusters, no (or minimum number) cluster center is changed again, and the square error sum is locally minimum.
Further, clustering evaluation is carried out on the clustering result. After clustering is finished, calculating the mean value of the stress indexes of each cluster, and representing the mean value as the F mean value of the stress indexes under a specific frequency F, wherein the calculation formula is as follows:
wherein the content of the first and second substances,
is a specific cluster mean frequency, xfIs the number of all sample frequencies in a particular cluster, N is the number of all samples in a particular cluster,
is a specific cluster mean stress index, yFIs the force index for all samples in a particular cluster.
Generating a two-dimensional graph by the stress index mean value and the characteristic frequency, and fitting a stress index mean value-frequency curve according to a polynomial least square method, wherein the calculation is as follows:
given a set of datasets from the above calculations
Polynomial of design
Is a stress index mean value-frequency function curve; where m is the sample dimension, n is the polynomial order, θj(j ═ 1, 2, 3, …, n) is the coefficient of each term of the polynomial.
The sum of squared errors for data points in the sample data set P is given by:
converting the error square sum S into a matrix form, and enabling:
the sum of the squared errors can be written as:
wherein, XvIs a matrix of a vandermonde matrix,
is a coefficient vector formed by polynomial coefficients, YrIs the output vector of the sample data set, and for the optimal function, the following should be satisfied:
polynomial coefficient vector for obtaining optimal function
Comprises the following steps:
the above-mentioned
The mean value-frequency function of the stress index can be solved by substituting the numerical values into the polynomial.
According to the body surface sensor fixing device provided by the invention, based on a mean value clustering method, a stress frequency curve is generated according to data acquired by a pre-test so as to determine an instantaneous threshold value, and an operator can conveniently adjust the composite belt 30 in real time in a real-time test, so that the real-time monitoring requirement of a vibration environment is met.
Based on the above embodiment, as an optional embodiment, the monitoring unit is further configured to monitor a lateral force index, a longitudinal force index, and a vertical force index of the sensor.
The monitoring unit 30 further comprises a second strain gauge module 32, the second strain gauge module 32 being located between the sensor and the inner wall of the fixation unit 10 for monitoring the pressure index between the sensor and the fixation unit 10.
Fig. 5 is a schematic diagram of the arrangement position of a strain gauge provided by the present invention, and as shown in fig. 5, the monitoring unit 30 includes a first strain gauge module 31 located at the bottom of the outer wall of the fixing unit 10 and a second strain gauge module 32 located at the inner wall of the fixing unit 10.
Optionally, the second strain gauge module 32 includes 5 strain gauges, wherein 2 strain gauges perpendicular to the X axis are used for acquiring a transverse force index of the inner wall of the fixing unit 10 along the X axis; the 2 strain gages are perpendicular to the Y axis and used for collecting longitudinal stress indexes of the inner wall of the fixing unit 10 along the Y axis, and the 1 strain gage perpendicular to the Z axis is located at the bottom of the inner wall of the fixing unit 10 and used for collecting vertical stress indexes of the inner wall of the fixing unit 10 along the Z axis so as to evaluate the fixing reliability of the fixing unit 10 to the sensor.
The strain gauge module in the monitoring unit 30 and the intelligent unit 40 are independent in power supply.
According to the body surface sensor fixing device provided by the invention, the strain gauge is arranged on the inner wall of the fixing unit, the stress index of the sensor is monitored, the fixing state of the sensor is further monitored, the looseness of the sensor can be found in time, and the accuracy of a detection result is further ensured.
Based on the foregoing embodiment, as an optional embodiment, the calculating unit is further configured to obtain a second ratio of the lateral force-receiving index to the fixed threshold, a third ratio of the longitudinal force-receiving index to the fixed threshold, and a fourth ratio of the vertical force-receiving index to the fixed threshold; the second ratio is used for indicating the stress state between the sensor and the fixed unit in the transverse direction; the third ratio is used for indicating the longitudinal stress state between the sensor and the fixed unit; the fourth ratio is used for indicating the stress state between the sensor and the fixed unit in the vertical direction.
Optionally, in the preparation stages of the pre-test and the formal test, the test operator firstly sets a fixed threshold, and compares the fixed threshold with the lateral, longitudinal and vertical stress indexes of the sensor monitored by the second strain gauge module 32, so that the test operator can conveniently judge whether the static fixed state of the sensor is effectively fixed according to the comparison result.
Wherein the fixed threshold is set according to GB/T13441.1-2007 Evaluation of Mechanical vibration and shock-exposure of human body to whole body vibration, ISO 2631-5-2004 Mechanical vibration and shock-Evaluation of human exposure to human body vibration, ISO/TR 10687-2012 Mechanical vibration-Description and determination of separated forces with reference to weight-body vibration.
According to the body surface sensor fixing device provided by the invention, the fixing state of the sensor is digitalized by acquiring the ratio of the stress index of the sensor to the fixing threshold value, so that the stress state of the sensor in each direction is monitored in real time, the sensor is effectively fixed, and the accuracy of a detection result is finally ensured.
Based on the above embodiment, as an optional embodiment, the method further includes: an alarm unit; generating first alarm information under the condition that the first ratio exceeds a preset range; and generating second alarm information under the condition that any one of the second ratio, the third ratio or the fourth ratio is smaller than a preset value.
The first alarm information may include an over-fix alarm and an over-fix alarm.
Optionally, when the body surface stress index acquired by the first strain gauge module 31 should not exceed the instantaneous threshold by ± 5%, and when the first ratio is within the range of 95% -105%, the state is the first state; and when the first ratio exceeds the range of 95% -105%, the second state is established. When the first strain gauge module 31 is in the second state, the alarm unit sends out a fixed over-loose alarm under the condition that the first ratio is less than 95%; in case the first ratio is larger than 105%, the alarm unit issues a stuck over alarm. The test operator should properly adjust the composite tape in an over-loose or over-tight state until the first ratio is in the range of 95% -105%.
When the transverse stress index of the sensor is larger than or equal to a fixed threshold value, the sensor is transversely fixed in a first state; under the condition that the transverse stress index is smaller than the first threshold value, the state is a second state;
optionally, the preset value is set to 1, and the sensor is transversely fixed to the first state when the second ratio is greater than or equal to 1; in the case where the second ratio is less than 1, the sensor is laterally fixed in the second state.
When the third ratio is greater than or equal to 1, the sensor is longitudinally fixed in a first state; in the case where the third ratio is less than 1, the sensor is longitudinally fixed in the second state.
Under the condition that the fourth ratio is greater than or equal to 1, the sensor is vertically fixed to be in a first state; and under the condition that the fourth ratio is less than 1, the sensor is vertically fixed in the second state.
When the transverse, longitudinal and vertical fixing of the sensor are in the first state, the sensor is effectively fixed; if the certain direction is in the second state, the fixing is invalid, and the sensor needs to be adjusted according to the fixing condition. And the test operator should properly adjust the fixing device in the second state until the requirement of the first state is met.
According to the body surface sensor fixing device provided by the invention, the alarm device alarms the second state, so that a test operator is reminded to adjust the device, and the accuracy of a detection result is further ensured.
Fig. 6 is a schematic structural diagram of a composite tape provided by the present invention, as shown in fig. 6, the composite tape mainly includes: a nylon material layer 21, a polyvinyl Chloride (PVC) material layer 22, and a cotton material layer 23; one end face of the polyvinyl chloride material layer 22 is attached to the nylon material layer 21; the other end face of the polyvinyl chloride material layer 22 is attached to the cotton material layer 23; the end of the cotton material layer 23 facing away from the polyvinyl chloride material layer 22 is used for fitting the body surface.
The fixing unit 10 is fixed on the body surface of a human body through the composite belt 20, the composite belt 20 comprises three layers of a nylon material layer 21, a PVC material layer 22 and a cotton material layer 23, the material layers are connected through linear sewing, and the composite belt 20 is attached to the body surface of the human body in a complex and elastic curved surface mode through the PVC material.
The middle layer of the composite belt 20 is made of the PVC material layer 22, the binding surface can be adjusted to be a corresponding fitting curved surface according to the structure of the curved surface of the human body surface, when the composite belt containing PVC materials is close to the human body surface, the PVC can enable the composite belt to bend automatically, when the curvature of the curved surface of the composite belt is close to that of the curved surface of the human body surface and the curved surfaces of the composite belt and the curved surfaces of the human body surface are fully attached, the composite belt does not deform, the composite belt does not have obvious oppression on the human body, and the data acquisition precision can be improved.
The inner layer of the composite belt 20 is close to the surface side of the human body and adopts the cotton material layer 23, the cotton structure layer design can reduce the oppressive feeling of the fixing device on the body surface of the human body on the one hand, prevent hurting and improve the test comfort of a tested person, and on the other hand, the friction force of the composite belt and the body surface of the human body can be increased to avoid the relative sliding of the composite belt and the body surface of the human body due to the large friction coefficient of the cotton material.
The outer layer of the composite belt 20 adopts a nylon structure layer 21, and the working diameter of the composite belt can be adjusted to adapt to the requirements of testers with different physical signs and different test parts, so that the fixing efficiency is improved.
According to the body surface sensor fixing device provided by the invention, the PVC layer is added into the composite belt, so that the curve of the composite belt is fully attached to the curved surface of the body surface of a human body, and the data acquisition precision is improved.
Based on the above embodiment, as an alternative embodiment, the fixing unit includes a housing 11; the shell 11 is a hollow structure with an open top; the sensor is positioned in the shell 11, and the detection end of the sensor is positioned at the opening at the top; the outer surface of the shell 11 is fixedly connected with the composite belt.
Fig. 7 is a schematic view of the overall structure of the body surface sensor fixing device provided by the invention, as shown in fig. 7, the composite tape 20 has two sections, the front ends of the two sections both adopt a folding and sewing method to fix the composite tape 20 on the shell 11, and the composite tape 20 further comprises a tape retracting clip 24 at the tail part.
The fixing unit 10 comprises a shell 11, the bottom surface and the outer wall of the shell 11 are of an alloy structure, the inner wall of the shell 11 is made of hard silica gel and is thin (the silica gel has small compressible deformation), and vibration signals are transmitted to the sensor through the body surface of a human body and are attenuated slightly, so that the fixing unit can be applied to a vibration environment. The fixing unit 10 is made of a light material, so that the influence of the fixing unit 10 on the factory sensitivity of the sensor can be reduced, and the reliability of test data is improved; the fixing unit 10 has no damage to the sensor body 02 and the sensor base 03, and the sensor can be repeatedly disassembled and applied to other places; the fixing unit 10 is of a simple combined structure, the sensor is simply and quickly mounted and dismounted, the preliminary period preparation time of the test can be effectively saved, and the test efficiency is improved.
According to the body surface sensor fixing device provided by the invention, the shell with the top opening and the hollow structure is arranged, so that the sensor can be effectively embedded and fixed in the shell, the sensor is effectively prevented from sliding off in the test process, and the smooth test is further ensured.
Based on the above embodiment, as an alternative embodiment, the housing 11 includes a body 111 and a baffle 112, and the baffle 112 is non-fixedly connected to the body 111; an opening is formed in the side face of the body 111 and used for placing the sensor into the body 111 from the opening; and a shutter 112 for closing the opening of the body 111 in a state where the sensor is placed in the body 111.
The housing 11 includes a body 111 and a baffle 112, and mainly functions to limit the lateral and longitudinal movement of the sensor. The body 111 and the baffle 112 are designed in a layered mode and comprise an inner layer and an outer layer, the outer layer of the body 111 is a rigid alloy structure, and the inner layer on the periphery of the side face of the body contains a hard silica gel layer which can limit the transverse movement of the sensor base 03; the outer layer of the baffle 112 is a rigid alloy structure body, and the inner wall of the baffle is a silica gel layer which is made of the same material as the body 111, so that the longitudinal movement of the sensor can be further limited. The inner layer silica gel structure is used for firmly limiting the sensor base 03 in the shell 11 and reducing the attenuation of vibration signals; the alloy structure of the outer layer ensures the service life of the fixing device.
The body 111 and the baffle 112 can be separated, the sensor can be quickly assembled and disassembled on the fixing unit 10, and damage to the sensor and the fixing device is avoided.
When the sensor is fixed, after the body 111 was put into with the sensor to experimental control personnel, sealed the opening of body 111 with baffle 112, the inside silica gel layer of baffle 112 was compressed and then restricted sensor base 03 and moved, above through casing 11 enclosed construction and silica gel squeezing action, the longitudinal and transverse movement of sensor can be effectively restricted.
According to the body surface sensor fixing device provided by the invention, the shell is of an openable structure, so that the sensor is convenient to fix, the sensor is quickly assembled and disassembled, and the damage to the sensor and the fixing device is avoided.
Based on the above embodiment, as an alternative embodiment, the fixing unit further includes an elastic fastener 12; the elastic fastener 12 serves to limit the displacement of the sensor in a direction perpendicular to the bottom of the housing 11.
Alternatively, the elastic fasteners 12 may be provided in 4 sets, one at each of the four corners of the top of the housing 11.
As shown in fig. 3, since the longitudinal sectional area of the sensor base 03 is larger than that of the housing 11, the sensor base 03 can be restricted from vertical movement by the elastic fastening member 12.
According to the body surface sensor fixing device provided by the invention, the elastic fastening piece is additionally arranged on the fixing unit, so that the displacement of the sensor in the vertical direction is limited, the effective fixation of the sensor is ensured, and the smooth proceeding of a test is further ensured.
Based on the above embodiments, as an alternative embodiment, the elastic fastening member 12 includes a pressing plate 122 and a spring assembly 121; a first end of the spring assembly 121 is fixedly arranged on the inner side of the inner wall of the shell 11, and a second end of the spring assembly 121 is fixedly connected with the end surface of the pressure plate 122; the end face of the platen 122 facing away from the spring assembly 121 is adapted to abut the outer surface of the sensor.
The elastic fastener 12 consists of a pressure plate 122 and a spring assembly 121, the spring assembly 121 can be a rigid spring (the compressible deformation of the rigid spring is small), and the vibration signal is transmitted to the sensor through the body surface of a human body and is less attenuated, so that the elastic fastener can be applied to a vibration environment.
When the sensor is fixed inside the body 111, the spring assembly 121 fixed on the top of the body 111 is compressed, the spring assembly 121 generates a vertical downward acting force on the pressing plate 122, and the acting force is uniformly distributed on the sensor base 03 (contacting with the pressing plate 122) to limit the vertical movement of the sensor. Wherein, the silica gel layer on the inner walls of the body 111 and the baffle 112 fixes the sensor on the inner walls of the body 111 and the baffle 112 by gluing; the elastic fastening member 12 at the top of the inner wall of the fixing unit 10 can be fixed at the top of the inner wall of the device by welding, and the spring assembly 121 is required to have a short length and a high hardness. The spring assembly 121 may be connected to the pressure plate 122 by welding.
The inner wall of the shell 11 is made of hard silica gel and is thin (the compressible deformation of the silica gel is small), the elastic fastener 12 is made of a rigid spring (the compressible deformation of the spring is small), and the vibration signal is transmitted to the sensor through the body surface of a human body and is small in attenuation, so that the elastic fastener can be applied to a vibration environment.
According to the body surface sensor fixing device provided by the invention, the vertical displacement of the sensor is limited by the spring assembly and the pressing plate, so that the vibration signal attenuation is small, and the body surface sensor fixing device is suitable for a vibration environment.
Fig. 8 is a front view of a body surface sensor fixing device provided by the present invention, fig. 9 is a top view of the body surface sensor fixing device provided by the present invention, as shown in fig. 8 and fig. 9, as an alternative embodiment, when a preliminary test or a formal test is required, the sensor base 03 (bottom surface and top surface) is kept as horizontal as possible, the sensor base 03 should be kept clean, and the sensor base 03 and its body 111 should be fixed reliably (no rotation). While the following points should be noted when fixing the sensor: the sensor base 03 (bottom surface and top surface) is kept horizontal as much as possible, the bottom surface and the top surface are required to have no foreign objects, the sensor base 03 and the body 111 thereof are required to be fixed reliably, and the two do not move relatively.
Before the vibration test is started, the test operator should separate the body 111 and the baffle 112, and after adjusting and determining the position of the sensor, contact the sensor base 03 with the pressing plate 122 of the fixing unit 10. The sensor base 03 interacts with the pressing plate 122 to fix the sensor base 03 in the body 111, wherein the sensor base 03 is required to be horizontally attached to the bottom of the inner surface of the body 111, and the sensor base 03 is required to be in effective contact with the bottom of the inner surface of the body 111. The sensor base 03 completely enters the body 111, and the test operator further fixes the sensor base 03 through the baffle 112.
Further, after the sensor is fixed, a test operator should check the stress index of the second strain gauge module 32 (fixed to the inner wall of the housing 11), and if the three directions all satisfy the first state requirement, the sensor is fixed reliably, and if the sensor in one direction is in the second state, the position of the sensor needs to be adjusted again until the first state requirement in the three directions is completely satisfied, and it is determined that the sensor is effectively fixed.
Furthermore, after the sensor is effectively fixed, the test operator should fix the whole device (the sensor and the body surface sensor fixing device) on the table-board of the vibration table by means of tape-bonding so as to measure the vibration sensitivity of the sensor. Because the additional mass of the body surface sensor fixing device enables the sensor delivery sensitivity not to meet the data calibration requirement, the sensitivity of the whole device (the sensor and the body surface sensor fixing device) needs to be detected and calibrated again, and the detected sensitivity is input to a vibration signal data acquisition setting page.
Further, after the calibration sensitivity is detected again, the stress index of the second strain gauge module 32 (the strain gauge fixed to the inner wall of the housing 11) should be checked again, and if the stress index satisfies that all the three directions are the first state, the next step is performed.
Further, the composite belt 20 and the belt-retracting clamp 24 are fixed on the body surface of the tested person, the test operator selects a specific position for fixing the sensor on the body surface of the tested person according to the test requirement, and the composite belt 20 surrounds the tested area of the tested person, wherein the sensor is required to be fixed horizontally or vertically as much as possible so as to reduce the inclination angle during fixing. The elasticity degree of the composite belt 20 is adjusted by test operators through the stress index of the strain gauge (fixed at the bottom of the outer wall of the shell 11), and when the first state requirement is met, the tested operators can fix the outer nylon structure.
Further, after the body surface sensor fixing device provided by the invention is fixed on the body surface of a human body, a test operator can perform a human body vibration pre-test, and the tightness degree of the composite belt 20 of the fixing device is properly adjusted again to determine that the tightness degree of the composite belt 20 used by the tested person is proper.
The body surface sensor fixing device provided by the invention is mainly used for a human body vibration test, can be applied to a multi-free vibration platform during the test, and when the human body vibration test is carried out, all test operators should be far away from a working area of the vibration platform, and all objects on a vibration platform surface should be fixed on the platform surface to avoid damage caused by object jumping.
The operation is still kept during the test, the test operator should pay attention to the stress index change condition of each strain gauge and adjust the test condition in time, and if the strain gauge does not meet the first state condition, the test should be stopped immediately and checked.
According to the body surface sensor fixing device provided by the invention, the composite belt is used for fixing the sensor on the body surface of a human body, the stress state of the body surface is represented by the ratio of the body surface stress index to the instantaneous threshold value, so that a test operator can adjust the tightness degree of the composite belt, the fixing requirement of tested groups with different physical sign parameters can be met, the body surface of the human body is not damaged, the tested comfort of the tested person is improved, meanwhile, the sensor is effectively prevented from inclining and falling off in the test process, and the accuracy of a detection result is further ensured.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute various embodiments or some portions of embodiments described above.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A body surface sensor fixation device, comprising: the device comprises a fixing unit, a composite belt, a monitoring unit, an intelligent unit and a calculating unit;
the fixing unit is used for fixing the sensor;
the composite belt is fixedly connected with the fixing unit and is used for fixing the fixing unit on the body surface;
the monitoring unit is used for acquiring a body surface stress index between the fixing unit and the body surface;
the intelligent unit is used for determining an instantaneous threshold value in a stress frequency curve according to the vibration amplitude frequency of the vibration table;
the calculation unit is used for acquiring a first ratio of the body surface stress index to the instantaneous threshold; the first ratio is used for indicating the stress state between the fixing unit and the body surface.
2. The body surface sensor fixing device of claim 1,
the intelligent unit is also used for generating the stress frequency curve based on a mean value clustering method according to the effective body surface stress index in the pre-test and the vibration amplitude frequency of the vibration table;
the stress frequency curve comprises a stress index mean-frequency curve under a plurality of vibration amplitudes.
3. The body surface sensor fixing device of claim 1, wherein the monitoring unit is further configured to monitor a lateral force index, a longitudinal force index, and a vertical force index of the sensor.
4. The body surface sensor fixing device according to claim 3, wherein the computing unit is further configured to obtain a second ratio of the lateral force index to a fixed threshold, a third ratio of the longitudinal force index to the fixed threshold, and a fourth ratio of the vertical force index to the fixed threshold;
the second ratio is used for indicating the stress state between the sensor and the fixed unit in the transverse direction;
the third ratio is used for indicating a stress state between the sensor and the fixed unit in the longitudinal direction;
the fourth ratio is used for indicating the stress state between the sensor and the fixed unit in the vertical direction.
5. The body surface sensor fixation device of claim 4, further comprising: an alarm unit;
generating first alarm information under the condition that the first ratio exceeds a preset range;
and generating second alarm information under the condition that any one of the second ratio, the third ratio or the fourth ratio exceeds the preset value.
6. The body surface sensor fixing device of claim 1,
the composite belt comprises a nylon material layer, a polyvinyl chloride material layer and a cotton material layer;
one end face of the polyvinyl chloride material layer is attached to the nylon material layer;
the other end face of the polyvinyl chloride material layer is attached to the cotton material layer;
the end face of the cotton material layer deviating from the polyvinyl chloride material layer is used for being attached to a body surface.
7. The body surface sensor fixing device according to claim 1, wherein the fixing unit includes a housing;
the shell is a hollow structure body with an opening at the top;
the sensor is positioned in the shell, and the detection end of the sensor is positioned at the top opening;
the outer surface of the shell is fixedly connected with the composite belt.
8. The body surface sensor fixing device of claim 7,
the shell comprises a body and a baffle, and the baffle is in non-fixed connection with the body;
the side surface of the body is provided with an opening for placing the sensor into the body from the opening;
the baffle is used for sealing the opening of the body under the condition that the sensor is placed in the body.
9. The body surface sensor fixing device of claim 1, wherein the fixing unit further comprises an elastic fastener; the elastic fastener is used for limiting the displacement of the sensor in the direction vertical to the bottom of the shell.
10. The body surface sensor fixing device of claim 9,
the elastic fastener comprises a pressure plate and a spring assembly;
the first end of the spring assembly is fixedly arranged on the inner side of the inner wall of the shell, and the second end of the spring assembly is fixedly connected with the end face of the pressing plate;
the end face of the pressing plate, which is far away from the spring assembly, is used for fitting the outer surface of the sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110626037.5A CN113532501B (en) | 2021-06-04 | 2021-06-04 | Body surface sensor fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110626037.5A CN113532501B (en) | 2021-06-04 | 2021-06-04 | Body surface sensor fixing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113532501A true CN113532501A (en) | 2021-10-22 |
| CN113532501B CN113532501B (en) | 2024-04-12 |
Family
ID=78095223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110626037.5A Active CN113532501B (en) | 2021-06-04 | 2021-06-04 | Body surface sensor fixing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113532501B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101214143A (en) * | 2007-12-26 | 2008-07-09 | 西安交通大学 | Dynamic riding-driving circumstance human body physiological character and biomechanics testing platform |
| CN102525419A (en) * | 2011-12-19 | 2012-07-04 | 北京工业大学 | Sensor fixing device for human kinetic test |
| CN106644215A (en) * | 2016-10-18 | 2017-05-10 | 广东小天才科技有限公司 | Method and device for determining wearing tightness of wearable device |
| CN108538362A (en) * | 2018-04-22 | 2018-09-14 | 大连理工大学 | A kind of incorgruous stress damage alarming analysis method of the tendon that exercise data acquires in real time |
| US10258259B1 (en) * | 2008-08-29 | 2019-04-16 | Gary Zets | Multimodal sensory feedback system and method for treatment and assessment of disequilibrium, balance and motion disorders |
| US10561507B1 (en) * | 2015-06-15 | 2020-02-18 | Boston Incubator Center, LLC | Wearable grippers for hemiplegic patients |
-
2021
- 2021-06-04 CN CN202110626037.5A patent/CN113532501B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101214143A (en) * | 2007-12-26 | 2008-07-09 | 西安交通大学 | Dynamic riding-driving circumstance human body physiological character and biomechanics testing platform |
| US10258259B1 (en) * | 2008-08-29 | 2019-04-16 | Gary Zets | Multimodal sensory feedback system and method for treatment and assessment of disequilibrium, balance and motion disorders |
| CN102525419A (en) * | 2011-12-19 | 2012-07-04 | 北京工业大学 | Sensor fixing device for human kinetic test |
| US10561507B1 (en) * | 2015-06-15 | 2020-02-18 | Boston Incubator Center, LLC | Wearable grippers for hemiplegic patients |
| CN106644215A (en) * | 2016-10-18 | 2017-05-10 | 广东小天才科技有限公司 | Method and device for determining wearing tightness of wearable device |
| CN108538362A (en) * | 2018-04-22 | 2018-09-14 | 大连理工大学 | A kind of incorgruous stress damage alarming analysis method of the tendon that exercise data acquires in real time |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113532501B (en) | 2024-04-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100518638C (en) | Passive physiological monitoring (P2M) system | |
| US8500282B2 (en) | Method and apparatus for monitoring eye tremor | |
| US6984207B1 (en) | Passive physiological monitoring (P2M) system | |
| JPS63501196A (en) | Monitoring methods and devices especially for childbirth and their applications | |
| AU2014214237B2 (en) | System and method for non-invasive measurement of soft biological tissue | |
| CN113532501A (en) | Body surface sensor fixing device | |
| WO2018094738A1 (en) | Pulse wave collection device, and pulse wave acquisition and calibration method | |
| EP3849415A1 (en) | Self-use oscillometry device | |
| Harmrt et al. | Instrumentation of a mobilization couch for dynamic load measurement | |
| CN109106372B (en) | Vital sign monitoring optical fiber pad based on optical fiber sensing technology | |
| Harms et al. | Measurement of spinal mobilisation forces | |
| Kitzig et al. | Use of an automotive seat occupancy sensor for the functionalization of a nursing bed—An overview of the sensor and the possible applications in the clinic and care sector | |
| Xu et al. | A Low-Cost Non-Invasive Continuous Cardiovascular Monitoring System Based on Oil-Filled Rubber Tubing | |
| RU2654765C1 (en) | Method for determining the functional state of the pilot and the system for its implementation | |
| Terekhov | Instrumentation for automatic measurement and real-time evaluation of man's postural equilibrium | |
| CN215078516U (en) | Portable cervical vertebra mobility electronic measuring instrument | |
| Zubair et al. | COVID-19 Management Requires Self-Sufficiency of Nations During Lockdown: Local Development of Body Mass Index Machine | |
| Guskova et al. | Systems for Monitoring Parameters of Respiratory Function | |
| CN117770789A (en) | Electrode belt, electrode belt tension monitoring system and electrode belt wearing state evaluation method | |
| Zsidai et al. | Development trends and results in spinal tests | |
| CN114577375A (en) | Method for detecting cardio-pulmonary resuscitation pressing depth and feedback device thereof | |
| Øhlckers et al. | A computer-aided intrauterine pressure measurement system based on a silicon sensor element with low deflection and excellent overload protection |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |