CN101797157B - Optical subcutaneous fat thickness measuring device - Google Patents
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- CN101797157B CN101797157B CN2010101135046A CN201010113504A CN101797157B CN 101797157 B CN101797157 B CN 101797157B CN 2010101135046 A CN2010101135046 A CN 2010101135046A CN 201010113504 A CN201010113504 A CN 201010113504A CN 101797157 B CN101797157 B CN 101797157B
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Abstract
The invention provides an optical subcutaneous fat thickness measuring device capable of measuring the subcutaneous fat thickness at different parts of an organism even by means of simple operation of one input part and capable of enabling the device to be miniaturized with low cost. The optical subcutaneous fat thickness measuring device (10) comprises a light-emitting component (13), a first acceptance component (14) and a second acceptance component (15); a database part (17) memorizing functions shared in each part of the organism, wherein the functions cause the acceptance parameter value obtained according to the acceptance amount in an acceptance part to be related to the value of the subcutaneous fat thickness of each part of the organism; a control part (16) deducing the value of the subcutaneous fat thickness reference to the functions of the database part according to the acceptance parameter value; an input button (10b) indicating the control part (16) to begin to measure the subcutaneous fat thickness; and a display part (10a) reporting the value of the subcutaneous fat thickness deduced by the control part to a measured person.
Description
Technical field
The present invention relates to measure through optical mode the optical subcutaneous fat thickness measuring device of subcutaneous fat thickness.
Background technology
A kind of optical subcutaneous fat thickness measuring device had been proposed in the past, it through from illumination part to the organism surface irradiates light, be received in the light behind the organism internal communication with light accepting part, measure the inner subcutaneous fat thickness of organism thus.In this optical subcutaneous fat thickness measuring device, disclosed subcutaneous fat measuring device can not receive the influence of skin color difference etc. and measures subcutaneous fat thickness accurately in the patent documentation 1.The subcutaneous fat measuring device of patent documentation 1 has 1 at least and send optical element and a plurality of photo detector and fat thickness to infer the unit.
Then, be applicable in the calibration curve of light income and subcutaneous fat thickness by the light income of light by photo detector, infer unit deduction fat thickness by fat thickness seeing through subcutaneous fat.In addition, fat thickness infers that the unit through using the light income of revising each photo detector that is produced by skin pigment etc. near the light income that send the photo detector of optical element, just can measure subcutaneous fat thickness accurately.
The optical subcutaneous fat thickness measuring device of patent documentation 2 has: light source portion, to the organism irradiates light; Light accepting part is received in the light that penetrates from organism surface behind the organism internal communication; Forming section makes organism surface be configured as the regulation shape; Pressure detecting portion detects forming section and is applied to the situation that pressure on the organism surface has reached setting; And the operational part that calculates subcutaneous fat thickness according to the light income in the light accepting part.In operational part, storing a plurality of in advance according to a relevant regression straight line that is applied to a plurality of pressure representative light incomes and subcutaneous fat thickness on the organism.Then, operational part carries out the measurement of subcutaneous fat thickness through the corresponding regression straight line of pressure of from a plurality of regression straight lines, selecting and being applied on the organism, thereby can measure subcutaneous fat thickness accurately.
The prior art document
[patent documentation 1] TOHKEMY 2000-155091 communique
[patent documentation 2] TOHKEMY 2003-310575 communique
Summary of the invention
, as existing optical subcutaneous fat thickness measuring device, be to have set the relevant regression straight line of expression light income respectively accordingly with subcutaneous fat thickness with subcutaneous fat thickness different at different position and different (for example, upper arm, thigh, abdominal part).In this optical subcutaneous fat thickness measuring device, the measured operates selector button in advance, carries out the measurement that it is selected the position again.Therefore, existing optical subcutaneous fat thickness measuring device must be operated the selector button at each position, has the problem of complicated operation.In addition, existing optical subcutaneous fat thickness measuring device must be provided with the selector button that usefulness is selected at the position in device, miniaturization and cost degradation that can not implement device.
The present invention is conceived to existing problem points in this prior art; Its purpose is to provide a kind of such optical subcutaneous fat thickness measuring device; Even the operation of 1 input part; Also can measure the subcutaneous fat thickness of organism different parts, simple to operate, and can make equipment miniaturization and cost degradation.
In order to address the above problem a little, the purport of the invention of record is to have in the scheme 1: illumination part, to the organism surface irradiates light; Light accepting part is received in the light behind the above-mentioned organism internal communication; Database part has been preserved shared function in each position of above-mentioned organism, and this function makes the value associated of the subcutaneous fat thickness at each position that receives beche-de-mer without spike numerical value and above-mentioned organism that obtains according to the light income in the above-mentioned light accepting part; Control part according to the above-mentioned beche-de-mer without spike numerical value that receives, with reference to the above-mentioned function of above-mentioned database part, is inferred the value of above-mentioned subcutaneous fat thickness; An input part is used to indicate above-mentioned control part to begin to measure above-mentioned subcutaneous fat thickness; And report portion, utilize the value of the subcutaneous fat thickness that above-mentioned control part infers to measured report; Above-mentioned function is the above-mentioned big more nonlinear exponent function of the big more slope of beche-de-mer without spike numerical value that receives; Above-mentioned first light income that receives beche-de-mer without spike numerical value to be arranged on and to leave locational first light accepting part of first distance from above-mentioned illumination part leaves comparing of second light income locational second light accepting part of second distance with being arranged on from above-mentioned illumination part, and above-mentioned second distance is than above-mentioned first distance.
Thus, input part of an operation just begins to measure subcutaneous fat thickness in optical subcutaneous fat thickness measuring device.Then, control part receives beche-de-mer without spike numerical value according to what obtain, uses shared function in each position of organism, infers subcutaneous fat thickness.Like this, even the thickness different at different position and different of subcutaneous fat through using function shared in each position, also can be measured each position subcutaneous fat thickness separately.Thereby, and need be different, simple to operate to the situation of each position operation selector button of measuring.In addition, operated input part has only one during owing to the measurement subcutaneous fat thickness, therefore, needs the situation of selector button to compare with each position of measuring, can make optical subcutaneous fat thickness measuring device miniaturization and cost degradation.In nonlinear function, receive beche-de-mer without spike numerical value to become big expression subcutaneous fat thickness thickening, therefore,, can correctly measure subcutaneous fat thickness from the subcutaneous fat thickness of thin thickness to thicker through using nonlinear function.In addition, can use the beche-de-mer without spike numerical value that receives of the influence that difference caused of the absorption revised because of skin pigment and light, scattering properties to calculate subcutaneous fat thickness, can measure subcutaneous fat thickness accurately.
The purport of the invention of record is in the scheme 2; In the optical subcutaneous fat thickness measuring device of in scheme 1, putting down in writing; In above-mentioned database part, preserve a plurality of functions; The coefficient of these a plurality of functions receives beche-de-mer without spike numerical value and difference according to above-mentioned, and above-mentioned control part selects a function to infer above-mentioned subcutaneous fat thickness from a plurality of functions according to the above-mentioned beche-de-mer without spike numerical value that receives.
Can measure the subcutaneous fat thickness separately at each position of organism thus.
The purport of the invention of record is in the scheme 3; In the optical subcutaneous fat thickness measuring device of in scheme 1 or 2, putting down in writing; Further have pressure detecting portion, with above-mentioned illumination part when being pressed in organism surface, this pressure detecting portion detects and is applied to the pressure on this organism surface; It is opportunity that above-mentioned control part has detected the pressure more than the setting with above-mentioned pressure detecting portion, makes above-mentioned illumination part irradiates light.
Thus, in that to apply pressure more than the setting on the organism surface be illumination part by correctly by the state that is pressed on the organism surface, this state is to prevent that outer light from entering into the light-emitting area of illumination part and the state between the organism surface.Then, be opportunity through detected the pressure more than the setting with pressure detecting portion, the illumination part irradiates light can not receive outer influence of light thus and correctly carries out the measurement of subcutaneous fat thickness.
The invention effect is following: simple to operate according to the present invention even the operation of an input part also can be measured the subcutaneous fat thickness of the different parts of organism, and can make equipment miniaturization and cost degradation.
Description of drawings
Fig. 1 is the ideograph that the optical subcutaneous fat thickness measuring device of first embodiment is shown.
Fig. 2 is the main body substrate and the upward view of measuring plate that optical subcutaneous fat thickness measuring device is shown.
Fig. 3 is display part and the figure of load button that illustrates in the surface of optical subcutaneous fat thickness measuring device.
Among Fig. 4, (a) being the chart that light income and the relevant of subcutaneous fat thickness and a regression straight line are shown, (b) is the chart that light income and the relevant and exponential function of subcutaneous fat thickness are shown.
Among Fig. 5, (a) be illustrate light income than with the chart of the relevant of subcutaneous fat thickness and a regression straight line, be light income to be shown compare the chart with the relevant and exponential function of subcutaneous fat thickness (b).
Fig. 6 illustrates the nonlinear function of preserving in the database part and the relevant chart of light income ratio with subcutaneous fat thickness.
Fig. 7 illustrates the subcutaneous fat thickness of thigh, upper arm and abdominal part and the chart of a relevant and regression straight line of light income ratio.
Fig. 8 is the ideograph that the optical subcutaneous fat thickness measuring device of second embodiment is shown.
Fig. 9 is the chart that the nonlinear function that is made up of 2 regression straight lines is shown.
Description of reference numerals
G4a; G5a; G8a; G8b ... A regression straight line as function; G4b; G5b ... Function and as the exponential function of nonlinear function; G6 ... Nonlinear function; K1 ... First distance; K2 ... Second distance; 10a ... Display part as report portion; 10b ... Load button as input part; 13 ... Light-emitting component as illumination part; 14 ... First photo detector as first light accepting part; 15 ... Second photo detector as second light accepting part; 16 ... Control part; 17 ... Database part; 20 ... Organism; 32 ... Pressure detecting portion
The specific embodiment
(first embodiment)
Below, with reference to Fig. 1～Fig. 7 the first concrete embodiment of the present invention is described.
As depicted in figs. 1 and 2, optical subcutaneous fat thickness measuring device 10 has the main body substrate 11 of rectangular plate shape, and is provided with the measurement plate 12 that constitutes circular plate shape at the lower surface central part of this main body basic 11.This measurement plate 12 is that the black ABS of 120mm degree forms by diameter, and when measuring subcutaneous fat thickness, the lower surface of measuring plate 12 is pressed against on the surface of organism 20.Have, the surface of organism 20 comprises these three layers of subcutaneous fat 20b and subcutaneous fat 20b underlying muscle 20c below skin 20a, the skin 20a again.
In measuring plate 12, be provided with light-emitting component 13, as illumination part.This light-emitting component 13 is the LED formation of 750 nanometers (nm) by centre wavelength.Have, be contemplated to be the near infrared region of 500～2500 nanometers (nm) from the centre wavelength of the light of light-emitting component 13 irradiation, in addition, light-emitting component 13 also can use laser diode.Then, the light-emitting area of light-emitting component 13 is exposed at the lower surface of measuring plate 12, and skin 20a irradiates light that can be from the lower surface of measuring plate 12 towards organism 20.
As shown in Figure 2, measuring on the plate 12, on light-emitting component 13 first position, first photo detector 14 as first light accepting part is being set apart from k1.First photo detector 14 is made up of photodiode.First photo detector 14 is arranged on to be measured on the plate 12, and its sensitive surface exposes at the lower surface of measuring plate 12.First photo detector 14 is accepted to shine and seen through the light of organism 20 from light-emitting component 13, and detects its light income.In addition, measuring on the plate 12, in that second photo detector 15 is being set on the position of light-emitting component 13 second distance k2, as second light accepting part.Second photo detector 15 is made up of photodiode.Second photo detector 15 is arranged on to be measured on the plate 12, and its sensitive surface exposes at the lower surface of measuring plate 12.Second photo detector 15 is accepted to shine and seen through the light of organism 20 from light-emitting component 13, and detects its light income.
On measurement plate 12, linearly disposing light-emitting component 13, first photo detector 14 and second photo detector 15.Then, 14 of the light-emitting component 13 and first photo detectors first preferably very short apart from k1 is so that the influence that difference caused of the absorption of modifying factor skin pigment and light, scattering properties for example preferably is set at 10mm～50mm.In addition, the second distance k2 that the light-emitting component 13 and second photo detector are 15 sets to such an extent that ratio first is long apart from k1, and expectation is set at 20mm～100mm.
As shown in Figure 3, the surface of optical subcutaneous fat thickness measuring device 10 is provided with as the display part 10a of report portion with as the load button 10b of input part.On the surface of load button 10b, show " subcutaneous fat thickness ".Through operating this load button 10b, begin to measure subcutaneous fat thickness to optical subcutaneous fat thickness measuring device 10 indications.Then, one utilizes optical subcutaneous fat thickness measuring device 10 to measure subcutaneous fat thickness, just in display part 10a, shows and utilizes the demonstration of display part 10a by measured subcutaneous fat thickness, reports the subcutaneous fat thickness that measures to the measured.Have, display part 10a is formed by liquid crystal panel, shows subcutaneous fat thickness with numerical value again.
As shown in Figure 1; In optical subcutaneous fat thickness measuring device 10, display part 10a and load button 10b are electrically connected with control part 16, by the demonstration of control part 16 controls to display part 10a; And through the operation of load button 10b, 16 indications begin to measure subcutaneous fat thickness to control part.
In addition, light-emitting component 13 is electrically connected with control part 16, lighting a lamp or turning off the light by control part 16 control light-emitting components 13.In addition, first photo detector 14 and second photo detector 15 are electrically connected with control part 16.In addition, be fed to control part 16 with first photo detector, 14 detected light incomes with second photo detector, 15 detected light incomes.In control part 16, be provided with database part 17.In store function in this database part 17 uses this function when calculating the value of subcutaneous fat thicknesses according to first photo detector 14 and the resulting light incomes of second photo detector 15.
At this, the function that uses when calculating the value of subcutaneous fat thickness describes.Result when Fig. 4 (a) and Fig. 4 (b) illustrate the subcutaneous fat thickness that uses optical subcutaneous fat thickness measuring device 10 to measure the organism phantom.Have, though not shown, the organism phantom is made up of two-layer again; Promptly; Below the subcutaneous fat model, have muscle model, the subcutaneous fat model is formed by the material that transmittance is high in the near infrared region of 500mm～2500nm, and muscle model is formed by the absorber of light of ABS etc.
In the chart of Fig. 4 (a) and Fig. 4 (b), the longitudinal axis shows the thickness (subcutaneous fat thickness) of subcutaneous fat model, and transverse axis shows the light income of second photo detector 15.Regression straight line G4a has been shown one time among Fig. 4 (a), and this regression straight line G4a is the relevant function of expression subcutaneous fat thickness and light income.The subcutaneous fat thickness among this regression straight line G4a and the coefficient R of light income equal 0.93.On the other hand, among Fig. 4 (b) exponential function G4b has been shown, this exponential function G4b is the relevant function of expression subcutaneous fat thickness and light income.The subcutaneous fat thickness among this exponential function G4b and the coefficient R of light income equal 0.98.Have again; For example utilize method of least square etc.; According to the subcutaneous fat thickness that uses ultrasound wave, X ray, MRI etc. to measure in advance and the relation of the light income under this subcutaneous fat thickness, come to obtain respectively regression straight line G4a and exponential function G4b (perhaps each coefficient R).
Then, shown in Fig. 4 (a) and Fig. 4 (b), use the value of the subcutaneous fat thickness that regression straight line G4a obtains, compare with the value of the subcutaneous fat thickness that uses exponential function G4b to obtain, light income more greatly then error is big more.Therefore, in order more correctly to calculate the value of subcutaneous fat thickness, preferably use exponential function (nonlinear function).
Fig. 5 (a) and Fig. 5 (b) are the result's the when subcutaneous fat thickness that uses optical subcutaneous fat thickness measuring device 10 to measure above-mentioned organism phantom is shown charts.
In the chart of Fig. 5 (a) and Fig. 5 (b), the longitudinal axis shows the thickness (subcutaneous fat thickness) of subcutaneous fat model, and the light income that transverse axis shows first photo detector 14 is the light income ratio with the comparing of light income of second photo detector 15.Regression straight line G5a has been shown one time among Fig. 5 (a), and this regression straight line G5a is the relevant function of expression subcutaneous fat thickness and light income ratio.Subcutaneous fat thickness among this regression straight line G5a is 0.89 with the coefficient R of light income ratio.On the other hand, among Fig. 5 (b) exponential function G5b has been shown, this exponential function G5b is the relevant function of expression subcutaneous fat thickness and light income ratio.Subcutaneous fat thickness among this exponential function G5b is 0.97 with the coefficient R of light income ratio.Have again; Utilize for example method of least square etc.; According to the subcutaneous fat thickness that uses ultrasound wave, X ray, MRI etc. to measure in advance and the relation of the light income ratio under this subcutaneous fat thickness, obtain regression straight line G5a and exponential function G5b (perhaps each coefficient R) respectively.
Then, shown in Fig. 5 (a) and Fig. 5 (b), the value of using the subcutaneous fat thickness that regression straight line G5a obtains is if light income is bigger than more, and then its error is big more.Thereby,, preferably use exponential function (nonlinear function) in order more correctly to calculate the value of subcutaneous fat thickness.In addition, though not shown, shown and used light income than under the situation that calculates subcutaneous fat thickness, the subcutaneous fat thickness value diminishes to the deviation of employed function in calculating.Thereby, through using first photo detector 14 and second photo detector 15, can the modifying factor skin pigment and the absorption of light, the influence that difference caused of scattering properties, can more correctly calculate subcutaneous fat thickness.
In this embodiment, the function as the value of calculating subcutaneous fat thickness uses nonlinear function G6 shown in Figure 6, and has used light income to liken to what be used to calculate subcutaneous fat thickness to receive beche-de-mer without spike numerical value.It is bigger than more that nonlinear function G6 is arranged to light income, big more to the coefficient of subcutaneous fat thickness conversion, and the coefficient R of subcutaneous fat thickness and light income ratio is 0.84.Through using ultrasound wave, X ray, MRI etc. to measure actual subcutaneous fat thickness in advance; According to the relation of its subcutaneous fat thickness with the light income ratio of the measured place of subcutaneous fat thickness; For example utilize that method of least square carries out approximate calculation, obtain this nonlinear function G6 (perhaps its coefficient R).
For the optical subcutaneous fat thickness measuring device 10 that uses said structure is measured the subcutaneous fat thickness as thigh, upper arm and the abdominal part at each position of organism 20; At first; The measured will then, operate load button 10b with measuring plate 12 by on the surface that is pressed in thigh, upper arm and abdominal part; Optical subcutaneous fat thickness measuring device 10 is connected, and control part 16 makes light-emitting component 13 light a lamp with the stipulated time.Shine the inner light of organism 20 from light-emitting component 13, after in skin 20a, subcutaneous fat 20b and the muscle 20c of thigh, upper arm or abdominal part, propagating, by first photo detector 14 and 15 acceptance of second photo detector.Control part 16 calculates the comparing of light income (light income than) of light income and second photo detector 15 of first photo detector 14.In addition, control part 16 according to the light income ratio that obtains, calculates the subcutaneous fat thickness of (deduction) thigh, upper arm or abdominal part with reference to nonlinear function G6.Then, control part 16 shows the subcutaneous fat thickness that calculates in display part 10a.
Utilize the value of the subcutaneous fat thickness (thigh, upper arm and abdominal part) that optical subcutaneous fat thickness measuring device 10 calculates shown in Fig. 6.The coefficient R that comprises the integral body of thigh, upper arm and abdominal part is 0.84.At this, regression straight line G7 shown in Fig. 7, this regression straight line G7 are the subcutaneous fat thickness separately of expression thigh, upper arm and abdominal part and the relevant function of light income ratio.Through using ultrasound wave, X ray, MRI etc. to measure actual subcutaneous fat thickness in advance; According to the relation of its subcutaneous fat thickness with the light income ratio of the measured place of subcutaneous fat thickness; For example utilize that method of least square etc. carries out approximate calculation, obtain each regression straight line G7 (perhaps each coefficient R).Coefficient R among the regression straight line G7 of thigh is 0.75, and the coefficient R among the regression straight line G7 of upper arm is 0.81, and the coefficient R among the regression straight line G7 of abdominal part is 0.84.
Thereby, the nonlinear function G6 shown in Fig. 6 and each regression straight line G7 are compared, correlation coefficient almost cannot see difference.Thereby, through using nonlinear function G6, even the subcutaneous fat thickness different at different position and different as thigh, upper arm and abdominal part as long as operate load button 10b, just can be measured the subcutaneous fat thickness at each position.
According to above-mentioned embodiment, can access following effect.
(1) optical subcutaneous fat thickness measuring device 10 has 1 load button 10b, and in control part 16 in store 1 nonlinear function G6.Then, through using 1 nonlinear function G6, can measure the subcutaneous fat thickness of thigh, upper arm and abdominal part.Thereby, and need be different to the situation of each position operation selector button of measuring, can operate simply.
(2) in optical subcutaneous fat thickness measuring device 10, only operate 1 load button 10b, just can measure each subcutaneous fat thickness of thigh, upper arm and abdominal part.Thereby; In optical subcutaneous fat thickness measuring device 10, load button 10b only is set just; With need compare the situation of each position selector button of measuring; Can make optical subcutaneous fat thickness measuring device 10 miniaturizations, and can reduce button quantity, make the manufacturing cost low costization.
(3) as the employed beche-de-mer without spike numerical value that receives in the calculating of subcutaneous fat thickness; Used from light-emitting component 13 first apart from the light income of first photo detector 14 of k1 and comparing from the light income of second photo detector 15 of light-emitting component 13 second distance k2; Be the light income ratio, second distance k2 is longer apart from k1 than first.Therefore, can use the beche-de-mer without spike numerical value that receives of the influence that difference caused of the absorption revised because of skin pigment and light, scattering properties to calculate subcutaneous fat thickness, can measure subcutaneous fat thickness accurately.
(4) as the function that calculates subcutaneous fat thickness, set nonlinear function G6.This nonlinear function G6 is that slope becomes big function than increasing along with light income.Then, because light income is than increasing expression subcutaneous fat thickness thickening, therefore,, can correctly measure subcutaneous fat thickness from the subcutaneous fat thickness of thin thickness to thicker through using nonlinear function G6.
(second embodiment)
Below, use Fig. 8 that second embodiment of the present invention is described.Have again, in following explanation,, and omit or simply its multiple explanation about the structure mark same tag identical with first embodiment of having explained.
As shown in Figure 8; In the optical subcutaneous fat thickness measuring device 10 of second embodiment; Form at the lower surface of main body substrate 11 and to accommodate recess 11a more than 1 or 1, and accommodate the compression spring 31 of accommodating Young's modulus among the recess 11a with regulation at this.Compression spring 31 1 ends (upper end among Fig. 8) and the inner top surface butt of accommodating recess 11a, and the other end (lower end among Fig. 8) and the surface of measuring plate 12 (above among Fig. 8) butt.Then, compression spring 31 utilizes spring force to make and measures plate 12 towards the direction application of force of leaving main body substrate 11.
In addition, on compression spring 31, be electrically connected pressure detecting portion 32, and pressure detecting portion 32 is electrically connected to control part 16.Then, will measure plate 12 when being pressed on organism 20 surfaces, compression spring 31 is compressed, and utilizes pressure detecting portion 32 to detect and is applied to the pressure on the organism 20.In addition, becoming setting by pressure detecting portion 32 detected pressure when above, the control that control part 16 makes light-emitting component 13 light a lamp with the stipulated time.Have, the setting of above-mentioned pressure preferably is set at again: exactly to organism 20 pressed when measuring the whole lower surface of plate 12, be applied to the value on the pressure detecting portion 32.
Thereby,, the effect of (1) in first embodiment, put down in writing～(4), can also obtain following effect according to above-mentioned second embodiment.
Optical subcutaneous fat thickness measuring device 10 in (5) second embodiments has compression spring 31 and pressure detecting portion 32.Then, when having been detected the pressure more than the setting by pressure detecting portion 32, control part 16 is lit a lamp light-emitting component 13, and the measurement of subcutaneous fat thickness is begun.Therefore; When making the lower surface of measuring plate 12 touch organism 20 surfaces exactly; Just subcutaneous fat thickness is measured, blocking is measured between the lower surface and organism 20 surfaces of plate 12 in measurement, thereby can prevent that outer light from entering into the lower surface of measuring plate 12.Its result, the measurement of the subcutaneous fat thickness of the light that comes self-emission device 13 can have correctly been used in the scattering of light that has prevented to come self-emission device 13.
Have, above-mentioned embodiment also can change as follows again.
Zero is as shown in Figure 9; Also can with light income than less than the regional proximate regression straight line G8a of setting and light income than the zone more than setting in proximate regression straight line G8b combination, compare the big more nonlinear function of big more slope and make the function of preservation in the database part 17 become light income.That is, in database part 17, preserving coefficient compares and a different regression straight line G8a and regression straight line G8b according to light income.Have, the slope that is approximated to a regression straight line G8b is greater than a regression straight line G8a again.Then; Under the situation of having used such nonlinear function; Light income than hour; Control part 16 selects a regression straight line G8a among regression straight line G8a and the regression straight line G8b to calculate subcutaneous fat thickness, and when big, control part 16 selects a regression straight line G8b among regression straight line G8a and the regression straight line G8b to calculate subcutaneous fat thickness at light income.Through constituting in this wise, need not distinguish the position of organism 20, just can measure subcutaneous fat thickness by enough 1 load button 10b.
Have again, a plurality of if the function of preserving in the database part 17 has, also can not regression straight line G8a, a such regression straight line of G8b, but preserve a plurality of exponential functions.
Zero has again, in database part 17, has preserved in the optical subcutaneous fat thickness measuring device 10 of a regression straight line G8a shown in Figure 8, G8b, also can be with receiving beche-de-mer without spike numerical value to be made as the light income of first photo detector 14 or second photo detector 15.
Zero light accepting part that is arranged on the main body substrate 11 can be 1, also can be provided with more than 3.
Zero as report portion, also can utilize sound and parameter demonstration to wait to the measured and report subcutaneous fat thickness.
Zero in each embodiment, as nonlinear function, is used as the number function function, but also can be quadratic function, cubic function etc.
Zero in second embodiment, has used compression spring 31 for detected pressures, but also can use strain gauge to carry out pressure detecting.
Claims (4)
1. optical subcutaneous fat thickness measuring device is characterized in that having:
Illumination part is to the organism surface irradiates light;
Light accepting part is received in the light behind the above-mentioned organism internal communication;
Database part has been preserved shared function in each position of above-mentioned organism, and this function makes according to what the light income in the above-mentioned light accepting part obtained and receives beche-de-mer without spike numerical value relevant with the value of the subcutaneous fat thickness at each position of above-mentioned organism;
Control part according to the above-mentioned beche-de-mer without spike numerical value that receives, with reference to the above-mentioned function of above-mentioned database part, is inferred the value of above-mentioned subcutaneous fat thickness;
An input part is used to indicate above-mentioned control part to begin to measure above-mentioned subcutaneous fat thickness; And
Report portion utilizes the value of the subcutaneous fat thickness that above-mentioned control part infers to measured report;
Above-mentioned function is the above-mentioned big more nonlinear exponent function of the big more slope of beche-de-mer without spike numerical value that receives; Above-mentioned first light income that receives beche-de-mer without spike numerical value to be arranged on and to leave locational first light accepting part of first distance from above-mentioned illumination part leaves comparing of second light income locational second light accepting part of second distance with being arranged on from above-mentioned illumination part, and above-mentioned second distance is than above-mentioned first distance.
2. optical subcutaneous fat thickness measuring device according to claim 1 is characterized in that,
In above-mentioned database part, preserve a plurality of functions, the coefficient of these a plurality of functions receives beche-de-mer without spike numerical value and difference according to above-mentioned, and above-mentioned control part selects a function to infer above-mentioned subcutaneous fat thickness from a plurality of functions according to the above-mentioned beche-de-mer without spike numerical value that receives.
3. optical subcutaneous fat thickness measuring device according to claim 1 is characterized in that,
Further has pressure detecting portion; With above-mentioned illumination part when being pressed in organism surface; This pressure detecting portion detects and is applied to the pressure on this organism surface; It is opportunity that above-mentioned control part has detected the pressure more than the setting with above-mentioned pressure detecting portion, makes above-mentioned illumination part irradiates light.
4. optical subcutaneous fat thickness measuring device according to claim 2 is characterized in that,
Further has pressure detecting portion; With above-mentioned illumination part when being pressed in organism surface; This pressure detecting portion detects and is applied to the pressure on this organism surface; It is opportunity that above-mentioned control part has detected the pressure more than the setting with above-mentioned pressure detecting portion, makes above-mentioned illumination part irradiates light.
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| EP0942260A1 (en) * | 1996-11-26 | 1999-09-15 | Omron Corporation | Method and apparatus for measuring concentration of light absorbing material in living tissue and thickness of intercalary tissue |
| CN1509154A (en) * | 2002-01-25 | 2004-06-30 | ���µ�����ҵ��ʽ���� | Optical biological information measure method and optical biological information measuring instrument |
| CN1745709A (en) * | 2004-08-20 | 2006-03-15 | 松下电器产业株式会社 | Biological information arithmetic apparatus, biological information arithmetic method, computer-executable program, and recording medium |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN101797157A (en) | 2010-08-11 |
| JP4715930B2 (en) | 2011-07-06 |
| JP2010178799A (en) | 2010-08-19 |
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