JP2005329098A - Load variation detecting device and biological and physiological detecting device using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a load variation detecting device mounted under leg parts of a bed, capable of accurately and efficiently detecting the load of the bed and variation of the load, and a biological and physiological detecting device. <P>SOLUTION: The load variation detecting device comprises at least a casing consisting of a base part and a peripheral wall part erected from the peripheral edge of the base part, a holder plate part with opposite parts at least fixed to the peripheral wall part of the casing, a load variation detecting means for detecting the variation of a movable part by the load of the bed, and an output means for outputting the load variation detected by the load variation detecting means to an external device. One of the leg parts of the bed on which a subject stays is mounted on the holder plate part, and the holder plate part is deformed with the load of the bed. The holder plate part consists of a waved uneven face part for holding the lower part of an electronic circuit board part and a plate fixing part extending from both sides of the waved uneven face part. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a load change detection device that is installed under a leg portion of a bed where a subject stays and detects a change in the load on the bed, and a biological physiology detection device using the load change detection device.

The living body physiology detection device disclosed in Patent Document 1 by the present inventor is capable of detecting the living body physiological information of the subject by measuring the load of the bed where the subject stays. A load measuring means for measuring the load, a load fluctuation detecting means for detecting the fluctuation state of the load measured by the load measuring means, and a frequency distribution is calculated based on the load fluctuation state detected by the load fluctuation detecting means. Frequency calculating means, a fluctuation amount detecting means for detecting the magnitude of load fluctuation detected by the load fluctuation detecting means, a frequency distribution calculated by the frequency calculating means and a fluctuation amount detecting means. And a biological organization state detecting means for obtaining biological organization data of the subject from the magnitude of the load.
JP 2003-552 A

  In the biological physiology detection device as described above, in order to detect body weight, respiratory rate, pulse rate, cough, rollover, etc., from the bed load and load variation where the subject stays, the bed load and load variation are more accurately detected. In addition, it is necessary to detect efficiently.

  For this reason, the present invention provides a load change detection device that is attached to the lower part of the leg portion of the bed and can accurately and efficiently detect the load of the bed and a change in the load, and a biological physiology detection device using the load change detection device. There is to do.

  Therefore, the load change detection device according to the present invention includes a casing composed of a bottom surface portion and a peripheral wall portion erected from the peripheral edge of the bottom surface portion, and at least a portion opposed to the peripheral wall portion of the casing, and a leg of the bed where the subject stays. A holding plate portion on which one of the portions is mounted and deformed by the load of the bed, a load change detecting means for detecting a change in a portion that can be changed by the bed load, and a load detected by the load change detecting means And at least output means for outputting the change to an external device.

  Further, the front holding plate portion is constituted by a wavy uneven surface portion that holds the lower side of the electronic circuit board portion, and a plate fixing portion that extends from both sides of the wavy uneven surface.

  Furthermore, it is desirable that the load change detecting means detects distortion of the holding plate portion that is deformed by a load.

  Further, it is desirable that the load change detecting means detects distortion of the plate fixing portion of the holding plate portion.

  Furthermore, it is desirable that the load change detecting means detects a change in capacitance between the wavy uneven surface portion deformed by the load and a bottom surface portion of the casing.

  Furthermore, it is preferable that a placement mark composed of concentric circles indicating the placement position is described on the holding plate in order to accurately place the leg portion of the bed.

  Further, it is desirable that a predetermined slope is provided in the carry-in direction on the peripheral wall portion of the casing so that the leg portion of the bed with casters can be easily placed.

  Moreover, it is desirable that the load change detection device described above is used in a biological physiology detection device.

  According to this invention, since the variation in the bed load is detected by detecting the deformation of the holding plate that holds the leg of the bed, it is possible to detect a subtle variation in the load. For this reason, by connecting this load change detection device to the biological physiology detection device, respiratory waveform, respiratory rate, degree of apnea, pulse rate, sputum waveform, sputum number, sputum time, sputum size, body movement waveform, Since it is possible to detect the body movement value, the position of the center of gravity on the bed, the turnover interval, the number of turnovers, and the like, the biological physiological status of the subject can be accurately grasped.

  Embodiments of the present invention will be described below with reference to the drawings.

  The load change detection device 1 according to the embodiment of the present invention is arranged to place the leg portion 11 of the bed 10 as shown in FIG. 10, for example, and the load detected by each load change detection device 1. Change data is sent to the control unit 100 to constitute a biological physiological detection device.

  The load change detection device 1 shown in FIGS. 1 to 3 includes a casing 2, a holding plate 3 that is held by the casing 2, and on which the legs 11 of the bed 10 are placed, and distortion of the holding plate 3. At least a strain detection sensor (for example, a strain gauge) 4 and a substrate 5 on which an electronic circuit for processing a signal from the strain detection sensor 4 is incorporated.

  The casing 2 is constituted by a peripheral wall portion 21 provided on the periphery of the bottom surface portion 23 and an inclined portion 22a formed on at least one side portion 22 of the peripheral wall portion 21. The substrate 5 is fixed by screws or the like, and a connector 51 of a signal / power cable 52 extending from the substrate 5 is provided on the outer surface thereof. Further, by providing the inclined portion 22a, when the caster is provided at the tip of the leg portion 11 of the bed 10, the leg portion 11 can be easily placed on the holding plate 3 described below.

  The holding plate 3 includes a corrugated uneven surface portion 33 having concavities and convexities 34, and a plate fixing portion that extends from the side surface of the corrugated uneven surface portion 33 in a key shape and is fixed to the opposite side surfaces of the peripheral wall portion 21. 31 and 32. In the first embodiment, the strain detection sensor 4 is provided in the plate fixing portion 31, but may be provided in the plate fixing portion 32 or in both. is there. In addition, a marking 6 made of a concentric circle for installing the leg portion 11 of the bed 10 at a predetermined position is provided at the central portion of the wavy uneven surface portion 33.

  As shown in FIG. 7, the signal from the strain detection sensor 4 is sent as load fluctuation data to the AD converter 43 via the gauge amplifiers 41 and 42 included in the electronic circuit provided on the substrate 5. The digital signal is transmitted to the microcomputer 45 in the control unit 100. In this microcomputer 45, for example, by the method disclosed in Japanese Patent Application Laid-Open No. 2003-552, as the physiological data of the subject, the body weight, the respiratory rate, the pulse rate, the cough, the rollover, and the respiratory waveform, the degree of apnea, Wrinkle waveform, number of wrinkles, spear time, wrinkle size, body motion waveform, body motion value, center of gravity position on bed, turnover interval, number of turnovers, etc. are calculated and detected. And the biophysiological data is transmitted to a hospital, a care center, etc. via the communication function 47. The detected physiological data is displayed on the display 48. Reference numeral 49 denotes a power source, a communication function, and a display control switch.

  In FIG. 7, the load change detection device 1 is attached to all the leg portions 11 of the bed 10. However, when it is not necessary to detect the body weight and movement of the center of gravity of the subject, they are attached to all the leg portions 11. There is no need, and if it is attached to one or two of the legs 11, it can be sufficiently detected.

  The load change detection device 1 shown in FIGS. 4 to 6 includes a casing 2, a holding plate 3 that is held by the casing 2 and on which the legs 11 of the bed 10 are placed, and a first electrode portion described below. 42 and the substrate 5 on which an electronic circuit for detecting and processing a change in capacitance of the second electrode portion 41 is incorporated.

  The casing 2 is constituted by a peripheral wall portion 21 provided on the periphery of the bottom surface portion 23 and an inclined portion 22a formed on at least one side portion 22 of the peripheral wall portion 21. The substrate 5 is fixed by screws or the like, and a connector 51 of a signal / power cable 52 extending from the substrate 5 is provided on the outer surface thereof. Further, by providing the inclined portion 22a, when the caster is provided at the tip of the leg portion 11 of the bed 10, the leg portion 11 can be easily placed on the holding plate 3 described below.

  The holding plate 3 includes a corrugated uneven surface portion 33 having concavities and convexities 34, and a plate fixing portion that extends from the side surface of the corrugated uneven surface portion 33 in a key shape and is fixed to the opposite side surfaces of the peripheral wall portion 21. 31 and 32. In addition, a marking 6 made of a concentric circle for installing the leg portion 11 of the bed 10 at a predetermined position is provided at the central portion of the wavy uneven surface portion 33.

  The second embodiment is characterized in that a capacitance sensor 4A is provided as means for detecting a load change. The capacitive sensor 4A uses the wavy uneven surface portion 33 as a first electrode plate portion 42, and a second electrode plate portion 41 on the bottom surface portion 23 of the casing 2 facing the first electrode plate portion 42. They are arranged.

  As shown in FIG. 8, the capacitance sensor 4A is connected to an oscillation circuit 41A included in an electronic circuit provided on the substrate 5, and the first power supply plate 42 fluctuates with a change in load. The counter circuit 42A counts the number of oscillations and transmits it to the microcomputer 45 in the control unit 100 as load variation data. In this microcomputer 45, for example, by the method disclosed in Japanese Patent Application Laid-Open No. 2003-552, as the physiological data of the subject, the body weight, the respiratory rate, the pulse rate, the cough, the rollover, and the respiratory waveform, the degree of apnea, Wrinkle waveform, number of wrinkles, spear time, wrinkle size, body motion waveform, body motion value, center of gravity position on bed, turnover interval, number of turnovers, etc. are calculated and detected. And the biophysiological data is transmitted to a hospital, a care center, etc. via the communication function 47. The detected physiological data is displayed on the display 48. Reference numeral 49 denotes a power source, a communication function, and a display control switch.

  FIG. 9 shows a pulse cycle and a respiratory cycle based on the fluctuation of the oscillation frequency (f) as an example of the detection of biological physiological data. By detecting these, the pulse rate and the respiratory rate can be detected. It can be done.

  In FIG. 8, the load change detection device 1 is attached to all the leg portions 11 of the bed 10. However, when it is not necessary to detect the body weight and the movement of the center of gravity of the subject, they are attached to all the leg portions 11. There is no need, and if it is attached to one or two of the legs 11, it can be sufficiently detected.

  As described above, according to the present invention, since it is possible to capture a minute change in the bed load, it is possible to detect biological physiological data such as a subject's breathing and pulse rate. It can also be used for devices that need to be detected.

It is a top view of the load change detection apparatus which concerns on Example 1 of this invention. It is AA sectional drawing of the load change detection apparatus which concerns on Example 1 at this invention. It is BB sectional drawing of the load change detection apparatus which concerns on Example 1 of this invention. It is a top view of the load change detection apparatus which concerns on Example 2 of this invention. It is AA sectional drawing of the load change detection apparatus which concerns on Example 2 at this invention. It is BB sectional drawing of the load change detection apparatus which concerns on Example 2 of this invention. 1 is a block diagram of a biological physiology detection device according to a first embodiment of the present invention. It is a block diagram of the biophysiology detection apparatus which concerns on Example 2 at this invention. It is the characteristic line figure which showed the relationship between the transmission frequency by the biological physiological detection apparatus which concerns on Example 2 of a main body invention, a pulse cycle, and a respiratory cycle. It is explanatory drawing which showed the mounting state of the load change detection apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Load change detection apparatus 2 Casing 3 Holding plate 4 Strain sensor 4A Capacitance sensor 5 Board | substrate 6 Marking 22a Inclined part

Claims (8)

A casing comprising a bottom wall and a peripheral wall standing from the periphery of the bottom; and
At least the opposite part is fixed to the peripheral wall part of the casing, one of the leg parts of the bed where the subject stays is placed, and the holding plate part deformed by the load of the bed,
A load change detecting means for detecting a change in a portion that can vary depending on the load of the bed;
A load change detection apparatus comprising at least output means for outputting a load change detected by the load fluctuation change detection means to an external device.   The front holding plate portion includes a wavy uneven surface portion that holds the lower side of the electronic circuit board portion, and plate fixing portions that extend from both sides of the wavy uneven surface and are respectively fixed to the peripheral wall portion of the casing. The load change detecting device according to claim 1, wherein:   3. The load change detecting device according to claim 2, wherein the load change detecting means detects distortion of the holding plate portion that is deformed by a load.   4. The load change detecting device according to claim 3, wherein the load change detecting means detects distortion of a plate fixing portion of the holding plate portion.   3. The load change detecting device according to claim 2, wherein the load change detecting means detects a change in capacitance between the wavy uneven surface portion deformed by the load and a bottom surface portion of the casing.   6. The placement mark comprising concentric circles indicating a placement position is described on the holding plate in order to accurately place the leg portion of the bed. The load change detection apparatus described in 1.   The load according to any one of claims 1 to 6, wherein the peripheral wall portion of the casing is provided with a predetermined inclination in the carry-in direction so that a leg portion of a bed with casters can be easily placed. Change detection device. A biological physiology detection device using the load change detection device according to any one of claims 1 to 7.

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