WO2008007713A1

WO2008007713A1 - Body motion judgment device

Info

Publication number: WO2008007713A1
Application number: PCT/JP2007/063843
Authority: WO
Inventors: Takehiko Hiei; Kazuhisa Shigemori
Original assignee: Daikin Industries, Ltd.
Priority date: 2006-07-14
Filing date: 2007-07-11
Publication date: 2008-01-17

Abstract

A pressure-sensitive portion (21) in a sensor section (20) detects a pressure variation generated through body motion of a person in bed as a body motion signal. The detected body motion signal is inputted to a circuit unit (40) in a body section (30) through a pressure receiving portion (31). In the circuit unit (40), the body motion signal is sampled by a signal processing means and then the breathing component and the heartbeat component are extracted, respectively, by a breathing extraction means (42) and a heartbeat extraction means (43) and converted into a confirmation signal. A signal processed by an output signal generation means (44) based on the confirmation signal is delivered to an LED for heartbeat (36) and an LED for breathing (37), thus lighting these LEDs (36, 37).

Description

Specification

Body movement judgment device

Technical field

[0001] The present invention relates to a body motion determination device that detects a body motion signal associated with a body motion of a sleeping person and determines a sleep state based on the body motion signal.

Background art

Conventionally, in order to determine the sleep state of a sleeper sleeping on bedding such as a bed, an apparatus for detecting the body movement of the sleeper is known.

[0003] For example, Patent Document 1 discloses a sleep detection apparatus for performing bed / bed determination or sleep / wake determination of a sleeping person. This sleep detection apparatus includes a body motion detection unit attached to a bed and a circuit unit connected to the body motion detection unit. The body motion detecting means is composed of a piezoelectric element formed in a tape shape, and is attached to the surface of the bed. The piezoelectric element converts the vibration associated with the body movement of the sleeping person into a body movement signal and outputs it to the circuit unit. The body movement signal input to the circuit unit is derived from the minute movement derived from the sleeping person's breathing and heartbeat, and the body movement that occurs when the sleeping person turns over, enters the floor, leaves the bed, etc. It is detected in a state where the coarse body motion is superimposed.

Patent Document 1: Japanese Patent Laid-Open No. 5-15517

Disclosure of the invention

Problems to be solved by the invention

[0004] Incidentally, in the above conventional example, a body motion signal of the sleeping person is detected by the body motion detecting means, and the sleeping state of the sleeping person is determined based on the body motion signal. However, in this conventional example, depending on the setting state of the body motion detection means, it is not possible to detect a sleeper's accurate body motion signal, and it is impossible to accurately grasp the sleep state of the sleeper! / There is.

[0005] That is, for example, the body movement detecting means is not installed corresponding to the sleeping part of the sleeping person, and the body movement of the sleeping person cannot be accurately detected. In addition, the body motion detection means may be installed under the bedclothes! /, And the sleeper's body movement may not be transmitted to the body motion detection means under the comforter and may not be detected. . In these cases, exact Accurate data cannot be collected, and it is difficult to accurately determine the sleeping state of a sleeping person.

[0006] In addition, there are devices that simply store data to be output to other analysis devices or display devices connected by an output unit such as a screen. In this device, when data is collected over a long period of time, there is a high possibility that an accurate body motion signal is not detected by the body motion detection means. In this case, only time is wasted when data is not collected, and it is not very efficient in performing sleep determination work.

[0007] The present invention has been made in view of the force and the point, and the object of the present invention is that the body motion of the sleeping person is accurately detected by the body motion detection means when the body motion is detected. An object of the present invention is to provide a body movement determination device that can be confirmed easily and reliably.

Means for solving the problem

[0008] In order to achieve the above object, a body motion determination device according to the present invention comprises a body motion signal detection means.

The signal detected by (20) is converted into a confirmation signal, and the confirmation signal is output by the signal output means (36, 37,...) So that it can be confirmed that the body movement signal is accurately detected. Output.

[0009] Specifically, the first invention is a body motion detection means (20) for detecting a body motion signal associated with a body motion of a sleeping person, and a signal conversion for converting the body motion signal into a predetermined confirmation signal. Means (42, 43) and signal output means (36, 37,...) For outputting the confirmation signal so that it can be confirmed that the body movement is detected by the body movement detection means (20). It has.

[0010] With this configuration, the body motion signal detected by the body motion detection means (20) is converted into a confirmation signal by the signal conversion means (42, 43), and the signal output means (36, 37, ...). ) Is output. By confirming this confirmation signal, the sleeping person or the like can immediately confirm on the spot that the body movement of the sleeping person is accurately detected by the body movement detecting means (20)! it can.

[0011] Therefore, the body motion of the sleeping person is not detected by the body motion detection means (20) due to an installation error of the body motion detection means (20) or a malfunction of the device! /, Only time is wasted in the state. It is possible to reliably prevent the person from passing, and to accurately and reliably determine the sleeping state of the sleeping person. Note that the signal output means (36, 37,...) For outputting the confirmation signal may be a display means for visually recognizing the signal, or may generate sound or vibration. It may be a means for generating.

In a second aspect based on the first aspect, the signal output means (36, 37,...) Is configured to visualize the confirmation signal. By visualizing the confirmation signal in this way, a sleeping person or the like can visually confirm through the confirmation signal that body movement is accurately detected by the body movement detection means (20). Confirmation of motion signal detection can be performed reliably and easily.

[0014] In particular, according to the third invention, in the second invention, the signal output means (36, 37) force emits light when the confirmation signal is input, and the luminance is changed according to the output level of the confirmation signal. Is configured to do.

[0015] Thereby, a sleeping person or the like can confirm whether or not a body motion signal is accurately detected by light, and thus can confirm the operation reliably and easily even in a dark state at night. Further, since the signal output means (36, 37) is configured to change the luminance in accordance with the output level of the confirmation signal, the confirmation signal is appropriately output by confirming the intensity of the light. Therefore, it is possible to check whether the body motion signal is detected at an appropriate level by the body motion detection means (20), that is, the setting of the body motion detection means (20). You can check if the ring is appropriate.

[0016] Further, according to a fourth aspect, in the third aspect, the illuminance detection means (35) for detecting ambient illuminance and the signal output based on the illuminance detected by the illuminance detection means (35). And luminance correction means (45) for correcting the luminance of the force means (36, 37).

[0017] As described above, by correcting the luminance of the signal output means (36, 37) according to the ambient illuminance, the output of the confirmation signal can be reliably confirmed, while the sleeper or the like disturbs sleep. Can be prevented. Specifically, for example, when the surroundings are bright, such as in the daytime, the output of the confirmation signal can be reliably confirmed by increasing the luminance of the signal output means (36, 37). When the surroundings are completely dark, such as at night, the signal output means (36, 37) will shine more than necessary by reducing the brightness of the signal output means (36, 37), and the sleeping person Can be prevented from disturbing sleep. [0018] On the other hand, the fifth invention is configured such that, in the second invention, the signal output means (61) emits light in response to the input of the confirmation signal and displays the in-bed state.

That is, since it is simply displayed whether or not the user is in the floor, the presence of the floor is accurately displayed without being affected by sudden noise such as opening / closing of the door and vibration.

[0020] For example, when the signal output means (61) displays the occupancy state even though the person is not in bed, the tube of the body motion signal detection means (20) is disconnected. It is possible to assume that the tube is broken! /, Or that there is a lot of room vibration or noise! /.

[0021] If the signal output means (61) does not indicate the presence of the bed despite being in bed, the body motion signal detection means (20) may be caused by crushing or bending of the tube. It is possible to assume that the tube is in a closed state or the tube is displaced from the sleeping person.

[0022] Furthermore, in a sixth aspect based on the fifth aspect, the signal output means (61) updates the display every predetermined time. For example, the occupancy status is displayed based on a new confirmation signal output every 10 seconds, and the latest occupancy status is displayed.

[0023] In a seventh aspect based on any one of the first to sixth forces, in the first aspect, the body motion signal includes at least one of a respiratory signal and a heartbeat signal. It is preferable to detect periodic breathing and heartbeat signals to determine the sleep state of a sleeping person. These movements are easily detected by the sleeping person and are detected as actual movements. It is easy to check the signal deviation! / ヽ. Therefore, as in the configuration described above, the breathing and heartbeat signals necessary for determining the sleep state can be accurately detected by converting the breathing and heartbeat signals into confirmation signals so that the sleeper can check the force. Can be confirmed with a simple structure.

[0024] Also, in an eighth invention according to the seventh invention, the signal conversion means (42) includes a band pass filter for extracting a respiratory signal from the body motion signal and converting it into the confirmation signal. It is. Respiration is a motion with a large vibration compared to heartbeats, and its signal is easy to extract. Therefore, it is possible to extract respiratory signals with high accuracy by using a bandpass filter.

[0025] On the other hand, in a ninth aspect based on the seventh aspect, the signal conversion means (43) is a body motion signal. An envelope detector is provided for extracting the heartbeat signal from force and converting it into the confirmation signal. When the heartbeat is detected by the body motion detection means (20) in which the vibration that occurs is relatively small, it is easily hidden behind other signals and noise. Therefore, the heartbeat signal can be extracted with high accuracy by extracting by envelope detection.

The invention's effect

[0026] As described above, according to the present invention, the body motion signal accompanying the body motion of the sleeping person is detected by the body motion detection means (20), and the body motion signal is detected by the signal conversion means (42, 43). Since it is possible to confirm that the body motion of the sleeping person is accurately detected by the body motion detection means (20), the body motion detection means (20 If the body movement of the sleeping person cannot be accurately detected, such as when the sleeping person is installed, this can be confirmed early by the sleeping person and the useless time can be prevented. Moreover, it is possible to easily and surely confirm whether or not a body motion signal is detected by the body motion detection means (20) with a simple configuration of outputting a confirmation signal obtained by converting the body motion signal. Can improve sleep state determination accuracy.

[0027] Further, according to the second invention, the signal output means (36, 37, ...) is configured to visualize the confirmation signal, and the sleeping person or the like is a body motion detection means. Since it is possible to more reliably and easily confirm that the body motion signal is detected by (20), it is possible to reliably collect data for determining the sleep state of the sleeping person.

[0028] In particular, according to the third invention, the signal output means (36, 37) is configured to emit light according to the confirmation signal and change the luminance according to the signal output level. Sleepers and others can more reliably confirm that body motion signals are accurately detected, and grasp the installation state of the body motion detection means (20) and signal detection status based on the brightness. It is also possible to collect data for determining the sleep state more reliably, and improve the determination accuracy of the sleep state.

[0029] Furthermore, according to the fourth aspect of the invention, the brightness of the signal output means (36, 37) is corrected based on the surrounding illuminance, so that, for example, a sleeping person outputs a confirmation signal even when it is bright. While it can be confirmed with certainty, the signal output means (36, 37) can be prevented from shining brightly and disturbing the sleep of the surrounding people and sleepers themselves when it is dark. [0030] Further, according to the fifth invention, since the signal output means (61) displays the occupancy state, it is possible to easily display whether or not the occupant is in the floor. Therefore, it is possible to accurately display the in-bed state without being affected by sudden noise such as opening / closing of doors and vibration as compared with the case where the signal state itself of the confirmation signal is displayed with luminance.

[0031] For example, when the signal output means (61) displays the occupancy state even though the person is not in bed, the tube of the body motion signal detection means (20) is disconnected. It is possible to determine whether the tube is damaged, the tube is broken, or the room vibration or noise is large.

[0032] Further, when the signal output means (61) does not indicate the presence of the bed despite being in bed, the body movement signal detection means (20) is caused by the tube being crushed or bent. It is possible to determine whether the tube is closed or the tube is displaced from the sleeping person.

[0033] According to the sixth aspect of the invention, since the signal output means (61) updates the display every predetermined time, the latest occupancy state can always be displayed.

[0034] According to the seventh invention, since the body motion signal includes at least one of a respiratory signal and a heartbeat signal, the body motion signal can be easily obtained using these signals used for determining the sleep state. It is possible to confirm whether the body motion signal is accurately detected by the configuration. Since the sleeper can easily grasp the heart rate, the signal output by the signal output means (36, 37, ···) and the force that matches the actual body movement can be easily It can be confirmed, and data for sleep state determination can be collected more reliably.

[0035] According to the eighth invention, since the signal conversion means (42) includes the band-pass filter for extracting the respiratory signal, the respiratory signal corresponding to a respiratory motion with relatively large motion. Can be easily extracted, and the operation of the apparatus can be reliably confirmed.

[0036] According to the ninth invention, the signal converting means (43) includes the envelope detector for extracting the heartbeat signal, so that it is hidden behind a breathing motion or noise that is small in movement. The heartbeat signal can be extracted with higher accuracy, and the operation of the device can be confirmed accurately.

Brief Description of Drawings FIG. 1 is a schematic view showing a usage state of a body movement determination device according to Embodiment 1 of the present invention.

FIG. 2 is a diagram illustrating a schematic configuration of the body movement determination device according to the first embodiment.

FIG. 3 is a block diagram conceptually showing each component of the circuit unit of the first embodiment.

FIG. 4 is a flowchart showing an operation in the case of extracting a heartbeat signal component from a body motion signal of Embodiment 1 and converting it into a confirmation signal.

FIG. 5 is a diagram showing an example of a body motion signal (processed signal) before envelope detection according to the first embodiment and a confirmation signal corresponding to a heartbeat component extracted from the body motion signal. .

FIG. 6 is a flowchart showing an operation in the case of extracting a respiratory signal component from the body motion signal of Embodiment 1 and converting it into a confirmation signal.

[Fig. 7] Fig. 7 is a diagram showing an example of an original signal of a body motion signal before filter processing of Embodiment 1 and a confirmation signal corresponding to a respiratory component extracted from the body motion signal.

FIG. 8 is a top view showing an LED lighting state of the body movement determination device according to the second embodiment.

FIG. 9 is a top view showing the body movement determination device according to the third embodiment.

FIG. 10 is an enlarged top view showing a main part of the body movement determination device according to the third embodiment.

10 Body movement judgment device

20 Sensor unit (body motion detection means)

35 Illuminance sensor (Illuminance detection means)

36 Heart rate LED (Signal output means)

37 Breathing LED (Signal output means)

42 Respiration extraction means (Signal conversion means)

43 Heart rate extraction means (signal conversion means)

45 Brightness correction means

61 Standing LED (Signal output means) BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that the following description of the preferred embodiments is merely illustrative in nature, and is not intended to limit the present invention, its application, or its use.

As shown in FIG. 1 and FIG. 2, the body movement determination device (10) according to the embodiment of the present invention detects the behavior of body movements that occur from a sleeping person and uses these data for the health management of the sleeping person. It is for the purpose. That is, this body movement determination device (10) collects and stores data related to body movements necessary for determining the sleeping state of a sleeper by another analysis device or display device (not shown). belongs to. Therefore, the body movement determination device (10) includes a sensor unit (20) for detecting the body movement of a sleeping person and a main body unit (30) for processing and storing the detected signal. ing.

[0041] As shown in FIGS. 1 and 2, the sensor section (20) is made of a tube-like member, and is configured to detect pressure applied from the outside and transmit it to the main body section (30). ing. In other words, the sensor unit (20) transmits the pressure fluctuation to the body part (30) and the pressure-sensitive part (21) for detecting vibration accompanying the body movement of the sleeping person as pressure fluctuation. And a pressure transmission part (22). Therefore, the sensor unit (20) constitutes a body motion detecting means for outputting the body motion of the sleeping person as a body motion signal.

[0042] As shown in Fig. 1, the pressure-sensitive part (21) is constituted by an elongated and hollow tube, and is laid under a bedding such as a futon. The pressure transmission part (22) is also constituted by a hollow tube, like the pressure sensitive part (21), and is connected to the pressure sensitive part (21) via a connecting part (23). ing. The pressure sensing part (21) is formed to have a larger diameter than the pressure transmission part (22). When the sleeping person lies on the bed, pressure and vibration are applied to the pressure sensing part (21) as the sleeping person moves. The internal pressure of the pressure sensing part (21) is transmitted to the pressure transmission part (22) and acts on the pressure receiving part (31) of the main body part (30).

[0043] The pressure receiving part (31) is embedded in the box-shaped main body part (30) and can be fitted to a part of the pressure transmitting part (22) opposite to the connection part (23). It has a mounting part (32). The attachment portion (32) has an end portion of the tubular pressure transmission portion (22) inside the main body portion (30). A concave portion (32a) recessed inward of the main body (30) in a substantially annular shape, and a convex projecting so as to fit into the pressure transmission portion (22) in the concave portion (32a) Part (32b). The convex portion (32b) is provided with a through hole (32c), and the internal pressure generated in the pressure sensitive portion (21) is transmitted to the pressure receiving portion (31) via the pressure transmitting portion (22). .

[0044] The pressure receiving portion (31) has a pressure receiving sensor (33) therein. The pressure receiving sensor (33) is constituted by a microphone, a pressure sensor, etc., receives the internal pressure generated in the pressure sensing part (21), converts the internal pressure into a voltage, and converts the internal pressure in the main body part (30). Output as a signal to the circuit unit (40).

[0045] The main body (30) includes a circuit unit (40) to be described later in a box-shaped case, and the body motion measuring device (10) is turned on on the upper surface of the case. 'The power switch (34) for turning off, the illuminance sensor (35) for detecting the ambient illuminance, and the lighting control corresponding to the heartbeat signal associated with the sleeper's heartbeat and the breathing signal associated with respiration, respectively. A heart rate LED (36) and a breathing LED (37) are provided as signal transmission means.

[0046] The illuminance sensor (35) is configured by a phototransistor, a photodiode, or the like so that ambient brightness can be detected. The illuminance detected by the illuminance sensor (35) is configured to be input as an illuminance signal to a circuit unit (40) described later.

[0047] The circuit unit (40) extracts a respiratory component signal and a heartbeat component signal from the body motion signal detected by the sensor unit (20), and stores them appropriately as time-series data. Data can be output to an analysis device or display device (not shown) to enable monitoring. As shown in FIG. 3, the circuit unit (40) includes a signal processing means (41), a breath extraction means (42), a heartbeat extraction means (43), an output signal generation means (44), and a luminance correction means (45). And storage means (46).

[0048] The signal processing means (41) performs an equivalent over-sampling of the body motion signal output from the sensor unit (20) by 64 times, and then integrates and averages every predetermined time (for example, 10 msec). Sampling is performed! /, And processing for canceling the noise of the body motion signal is performed.

[0049] The heartbeat extracting means (43) includes an envelope detector! /, And a body motion signal after being processed by the signal processing means (41) (hereinafter, also referred to as a processed body motion signal). The envelope for It performs detection processing, extracts signal components associated with the sleeper's heartbeat, and generates a heartbeat confirmation signal (confirmation signal). Specifically, after removing the components caused by the natural frequency of the human body as much as possible from the processed body motion signal by a band-pass filter (for example, a secondary filter with a frequency band of 7.5 Hz ± 2.5 Hz). The envelope detection is performed to obtain the envelope from the peak of the absolute value of the signal.

[0050] The breath extraction means (42) includes a band pass filter, and the body motion signal after the processing is applied to the band pass filter (for example, a fourth order filter in a band of 0.6 Hz ± 0.6 Hz). Therefore, the signal component associated with the sleep of the sleeper is extracted and used as a respiration confirmation signal (confirmation signal).

[0051] Note that the body motion signal preprocessing method by the signal processing means (41) and the signal extraction methods by the breath extraction means (42) and the heartbeat extraction means (43) are methods other than those described above. May be.

[0052] The output signal generation means (44) is based on the confirmation signal output from the respiratory extraction means (42) and the heartbeat extraction means (43), and / or the respiratory LED (37) and A signal for lighting control is generated and output to the heart rate LED (36). When the signal is generated, the LED ( It is configured to determine the luminance of 36, 37).

[0053] Then, based on the signal generated by the output signal generation means (44), the bedridden or the like turns on the LE D (36, 37) so that his / her breath and heart rate are It can be confirmed whether or not the sensor part (20) can accurately detect. In other words, since the sleeper can easily grasp the timing of breathing and heartbeat by himself, the sensor is confirmed by checking whether the LED (36, 37) is lit at an appropriate brightness in accordance with the timing. Use force S to confirm easily and surely whether the signal is detected accurately in the part (20).

[0054] This prevents the body movement signals such as breathing and heartbeats from being detected accurately due to a setting error of the sensor unit (20) or a failure of the device (10), thereby preventing wasted time. The sleep determination using the body movement determination device (10) can be accurately performed without waste. [0055] Here, the breath extraction means (42) and the heartbeat extraction means (43) each constitute a signal conversion means of the present invention.

The brightness correction means (45) is configured to correct the brightness of the LEDs (36, 37) by an input signal (illuminance signal) corresponding to the illuminance of the illuminance sensor (35). Specifically, for example, when the illuminance sensor (35) detects that the surroundings are bright, such as during the daytime, the sleeper can reliably confirm that the LEDs (36, 37) are lit. Then, the brightness of the LEDs (36, 37) is increased by the brightness correction means (45) to light up more brightly. On the other hand, when the illuminance sensor (35) detects that the surroundings are too dark, such as at night, the LED (36, 37) is lit brightly. Decrease the brightness of (36, 37).

[0057] The storage means (46) stores, in time series, data corresponding to the respiratory component and the heartbeat component extracted by the respiratory extraction means (42) and the heartbeat extraction means (43), respectively. The data stored in the storage means (46) is read by an analysis device such as a personal computer (not shown) and then output to the display device. Since the sleep determination based on the body motion signal detected by the body motion determination device (10) is performed based on the accumulated data for a certain period (for example, one week), the storage means (46) Has a storage capacity capable of storing the data of the body motion signal for a predetermined period.

[0058] The data stored in the storage means (46) may be the same signals as the various confirmation signals extracted and converted by the breath extraction means (42) and the heart beat extraction means (43). However, it may be a signal processed by each means (42, 43) corresponding to the breathing heartbeat. It is also configured to memorize body motion signals that have not been extracted as respiratory or heart rate components!

[0059] Heartbeat component extraction operation

Next, in the body movement determination device (10) of this embodiment, the operation of extracting the heartbeat signal accompanying the heartbeat from the body movement signal detected by the sensor unit (20) and converting it into a confirmation signal is performed according to the flow of FIG. This will be described in detail below with reference.

[0060] First, when the flow of FIG. 4 starts, at step SA1, the body motion signal detected by the sensor unit (20) is input to the signal processing means (41) of the circuit unit (40). Is done. this At this time, the signal processing means (41) reads the body motion signal, which is not read as it is, by oversampling 64 times. Then, in step SA2, the read signals are integrated and averaged for 10 msec and equivalently sampled. By these steps SA 1 and SA 2, noise can be removed from the signal detected by the sensor section (20), and a waveform as shown by a thin line on the upper side of FIG. 5 is obtained.

[0061] As shown in Fig. 5, the body motion signal obtained as described above (the processed signal in Fig. 5) includes, in addition to the heart rate component associated with the heartbeat, the respiratory component associated with breathing and the human body. Since the component due to the natural frequency is also included, signal processing by a bandpass filter that separates these components is performed in step SA3. In subsequent steps SA4 and SA5, envelope detection is performed in order to extract the heart rate component from the body motion signal with higher accuracy.

[0062] Specifically, in step SA4, processing is performed such that only the absolute value of the signal level of the waveform shown in the upper side of Fig. 5 is taken, and in step SA5, these peaks are connected to obtain an envelope. Thus, the obtained signal is shown in the lower side of FIG. This signal is a confirmation signal corresponding to the heartbeat component, and is output to the output signal generation means (44). In FIG. 5, the vertical axis of the upper signal (processed signal) corresponds to the signal level, and the vertical axis of the lower signal (confirmation signal) corresponds to the luminance. In this brightness, 100 is the maximum lighting, and the number indicates the ratio of brightness to the maximum (corresponding to the duty ratio).

[0063] After that, in step SA6, the output signal generating means (44) that changes the luminance of the heartbeat LED (36) in accordance with the confirmation signal, the duty of the LED (36) in accordance with the confirmation signal. A signal that changes the tee ratio is generated and output to the LED (36). As a result, the signal level of the confirmation signal can be confirmed by the brightness of the LED (36), and the sleeping person or the like can check whether the detected signal is at an appropriate level, that is, set the sensor unit (20). It is easy to check whether or not

[0064] As described above, the body movement signal associated with the body movement of the sleeper is detected by the sensor unit (20), and the heartbeat component (heartbeat signal) associated with the heartbeat is extracted and converted into a confirmation signal. By displaying in (36), the sleeping person can easily confirm whether or not the body motion associated with the actual heartbeat can be accurately detected by the body motion determination device (10). [0065] Respiratory component extraction operation

Next, the operation of extracting a respiratory signal accompanying breathing from the body motion signal detected by the sensor unit (20) and converting it into a confirmation signal will be described in detail with reference to the flow of FIG.

First, when the flow of FIG. 6 is started, the body motion signal detected by the sensor unit (20) in step S B1 is the signal processing means in step S B1 as in the above-described heartbeat component extraction operation. (41) is input. Even in this respiration signal extraction operation, the signal processing means (41) reads the body motion signal, which is not read as it is, by oversampling 64 times, and integrates and averages it for 10 msec. Sampling (Step SB2)

[0067] In this way, after removing the noise of the input body motion signal as much as possible, in the subsequent step SB3, signal processing by a band-pass filter is performed so as to extract only components due to respiration. Then, only the signal corresponding to the respiratory component such as the thick line can be extracted from the original signal indicated by the thin line in FIG. This signal is a confirmation signal of the present invention, and is output to the output signal generation means (44). In FIG. 7, as in FIG. 5, the vertical axis of the original signal indicated by a thin line corresponds to the signal level, and the vertical axis of the confirmation signal indicated by a thick line corresponds to the luminance.

[0068] Thereafter, in step SB4, the output signal generating means (44) for changing the luminance of the breathing LED (37) in accordance with the signal level of the confirmation signal, as in the above-described heartbeat component extraction operation. A signal that changes the duty ratio of the LED (37) according to the confirmation signal is generated and output to the LED (37). As a result, the signal level of the confirmation signal can be confirmed by the brightness of the LED (36), and a sleeping person or the like can check whether the detected signal is at an appropriate level, that is, the setting of the sensor unit (20). You can easily check whether it is appropriate.

[0069] As described above, the body motion signal associated with the body motion of the sleeping person is measured by the sensor unit (20), and only the component (breathing signal) associated with breathing is extracted and converted into a confirmation signal. By displaying in (37), the sleeping person can confirm whether or not the body movement accompanying the actual breathing can be accurately detected by the body movement judging device (10). [0070] Effects of one embodiment

In the above embodiment, a body motion signal accompanying the body motion of a sleeping person is detected, and a component corresponding to breathing or heartbeat is extracted and displayed by an inexpensive LED (36, 37). Therefore, it is possible to easily confirm whether the body movement of the sleeping person is accurately detected with a low-cost configuration. This makes it possible to accurately detect the body movement signal due to a setting error of the sensor unit (20), etc., to reliably detect the correct state of the signal, and to spend wasted time without data being collected. Can be prevented. That is, with the configuration as described above, it becomes possible to efficiently and accurately obtain the body motion signal necessary for sleep determination, and the sleep determination work can be made more efficient.

[0071] The confirmation signal output to the LED (36, 37) to confirm that the body movement signal is detected corresponds to the heartbeat and respiration components used for sleep determination. Since this is a signal, it is possible to check the presence or absence of detection of the body motion signal with a simple and low-cost configuration with the force S.

[0072] Further, as a means for outputting the confirmation signal, the signal level of the confirmation signal can be confirmed by changing the luminance of the LED (36, 37), so that the sleeper or the like can detect the body movement signal. It is possible to reliably and easily grasp the detection state (such as the strength of the body motion signal). As a result, the setting of the sensor unit (20) can be adjusted so as to obtain an appropriate signal level, and more accurate sleep determination can be performed.

[0073] Further, the illuminance sensor (35) detects ambient illuminance, and the LD is used according to the illuminance.

Since the brightness of (36, 37) is corrected, if the brightness is increased when the surroundings are bright, the lighting state of the LED (36, 37) can be confirmed more reliably, while the surroundings are light. In this case, the brightness of the LED (36, 37) can be lowered to prevent the sleep of the sleeper from being disturbed.

Next, Embodiment 2 of the present invention will be described in detail based on the drawings.

[0075] As shown in Fig. 8, the second embodiment is provided with dedicated LEDs (36, 37) for the first embodiment to display confirmation signals corresponding to the heartbeat signal component and the respiratory signal component. Instead of this, a single LED (51) is provided. That is, one LED (51) is configured to be able to blink an LED serving as a power supply display section that lights up in response to an operation of the power switch (34). This LED (51) outputs the above confirmation signal.

[0077] According to this embodiment, a dedicated LED for displaying a confirmation signal can be omitted.

Cost can be reduced. Other configurations, operations, and effects are the same as those in the first embodiment.

Next, Embodiment 3 of the present invention will be described in detail based on the drawings.

As shown in FIGS. 9 and 10, the third embodiment is different from the first embodiment in that the heart rate LED (36

) And the breathing LED (37) are changed in accordance with the signal level of the confirmation signal, and the in-bed state (being on the bed) is displayed.

[0080] That is, the presence LED (61), the measurement LED (62), and the error LED (63) are provided on the front of the main body (30) in the body movement determination device (10), and time input is performed. A switch (64) is provided.

[0081] The in-floor LED (61) constitutes a signal output means (61), and emits light to display the in-bed state in response to the confirmation signal input from the output signal generation means (44). It is structured as follows. In other words, the output signal generation means (44) generates a confirmation signal based on the confirmation signals of the breath extraction means (42) and the heart rate extraction means (43) so that the occupancy LED (61) is lit at a constant luminance. Output to LED (61). Further, the display of the in-floor LED (61) is updated every predetermined time. That is, since the output signal generation means (44) reads and outputs the confirmation signals of the breath extraction means (42) and the heart rate extraction means (43) at predetermined time intervals, the occupancy LED (61) is renewed at predetermined time intervals. Will be displayed. The update time interval is preferably about 5 seconds to 1 minute. For example, the 10 second interval is preferable.

[0082] The measurement LED (62) is lit during measurement. The error LED (63) is lit when not operating normally according to the program to prompt the user to reset.

[0083] The measurement LED (62) is a green LED, the standing LED (61) is an orange LED, and the error LED (63) is a red LED. The error LED (63) blinks when the storage capacity of the storage means (46) decreases. [0084] Further, when the user inputs the time input switch (64), for example, when the user has a meal, the meal time is written in the storage means (46). At that time, when the time input switch (64) is pressed, the three measurement LEDs (62), the occupancy LED (61) and the error LED (63) blink once to display the input.

[0085] The occupancy LED (61) lights up when a heartbeat is detected and a confirmation signal is output, so that when the user enters the couch and enters the couch, the couch is accurately displayed. It will be. Therefore, conversely, when the occupancy LED (61) is lit and the occupancy status is displayed even though it is not occupying, the following status is assumed.

[0086] (1) The pressure transmission part (22), which is a tube of the sensor part (20), comes off from the main body part (30)!

[0087] (2) The pressure sensing part (21) or the pressure transmission part (22) which is the tube of the sensor part (20) is damaged.

[0088] (3) Measure! / Large room vibration and noise.

[0089] In these states, the pressure receiving unit (31) detects the noise in the room and displays the bed, so that the user can easily find a problem.

[0090] In addition, in the case where the occupancy status is not displayed because the occupancy LED (61) does not light even though the occupancy is present, the following status is assumed.

(1) The pressure-sensitive part (21) or the pressure transmission part (22), which is a tube of the sensor part (20), is crushed or closed by bending.

[0092] (2) The position of the pressure-sensitive part (21) of the sensor part (20) is shifted from the sleeping person!

[0093] In these states, since the pressure receiving unit (31) has not detected a heartbeat or the like, the user can easily find the malfunction.

Therefore, according to the third embodiment, since the occupancy LED (61) displays the occupancy state, whether or not it is occupying can be easily displayed. Therefore, it is possible to accurately display the in-bed state without being affected by sudden noise such as door opening / closing and vibration as compared with the case where the signal state of the confirmation signal is displayed by luminance.

[0095] Further, since the above-mentioned occupancy LED (61) updates the display every predetermined time, the latest occupancy state can always be displayed. Other configurations, operations, and effects are the same as those in the first embodiment. is there.

According to the above embodiment, the following configuration is possible.

[0097] In the above embodiments;! To 3, a component corresponding to heartbeat or respiration is converted into a confirmation signal in the detected body motion signal and output to the LED (36, 37, 51, 61). However, as long as this is not the case, for example, a liquid crystal screen is provided and a signal is output and displayed on the liquid crystal screen, or a confirmation signal is output by vibration with a built-in vibration motor, etc. Any means may be used as long as it can transmit a confirmation signal to the terminal.

In Embodiment 1 described above, one LED (36, 37) is provided for each of the heart rate component and the respiratory component, and the LED (36, 37) of the LED (36, 37) is set according to the signal level of the confirmation signal. Force S to change the brightness S, as long as there is a heart rate component and a respiratory component that are not limited to this, multiple LEDs are provided, and the LEDs are turned on according to the signal level of the confirmation signal. Good.

[0099] Further, in the above embodiments;! To 3, any force can be used as long as the body movement of the sleeper can be detected as long as the force of using a tubular member as the sensor unit is not limited to this. May be.

[0100] In the first embodiment, the brightness of the LEDs (36, 37) is changed in accordance with the confirmation signal. However, only when the confirmation signal is equal to or higher than a predetermined signal level, the LED ( 36

37) may be lit.

[0101] Furthermore, in the above embodiments;! To 3, each of the components corresponding to the breathing 'heartbeat' is extracted from the body motion signal and used as the confirmation signal, and any one of the breathing 'beating heartbeat' is not limited to this. Only one component may be extracted and converted into a confirmation signal for use.

Industrial applicability

As described above, the present invention is particularly useful for a body movement determination device that detects and stores a body movement signal associated with the body movement of a sleeping person.

Claims

The scope of the claims

[1] Body motion detection means (20) for detecting a body motion signal accompanying the body motion of a sleeping person,

The signal conversion means (42, 43) for converting the body movement signal into a predetermined confirmation signal, and the confirmation signal is output so that the body movement detection means (20) can confirm that body movement is detected. Signal output means (36, 37, ...)

A body movement determination device characterized by comprising:

[2] In claim 1,

The signal output means (36, 37,...) Is configured to visualize the confirmation signal.

The body movement determination apparatus characterized by the above-mentioned.

[3] In claim 2,

The signal output means (36, 37,...) Is configured to emit light in response to the input of the confirmation signal and change the luminance according to the output level of the confirmation signal.

The body movement determination apparatus characterized by the above-mentioned.

[4] In claim 3,

Illuminance detection means (35) for detecting ambient illuminance,

Luminance correction means (45) for correcting the luminance of the signal output means (36, 37) based on the illuminance detected by the illuminance detection means (35);

A body movement determination device further comprising:

[5] In claim 2,

The signal output means (61) is configured to emit light in response to the input of the confirmation signal and to display the in-bed state.

The body movement determination apparatus characterized by the above-mentioned.

[6] In claim 5,

The signal output means (61) updates the display every predetermined time.

The body movement determination apparatus characterized by the above-mentioned.

[7] In claim 1,

The body motion signal includes at least one of a respiratory signal and a heartbeat signal. The body movement determination apparatus characterized by the above-mentioned.

[8] In claim 7,

The signal converting means (42) includes a band-pass filter for extracting a respiratory signal from the body motion signal and converting it into the confirmation signal.

The body movement determination apparatus characterized by the above-mentioned.

[9] In claim 7,

The signal converting means (43) includes an envelope detector for extracting a heartbeat signal from the body motion signal and converting it into the confirmation signal.

The body movement determination apparatus characterized by the above-mentioned.