JP2010119791A - Sleeping state evaluation system and illumination system using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To precisely detect a laterally lying state, and also to reduce the disadvantage of a user as much as possible even when the laterally lying state is not detected. <P>SOLUTION: A sleeping state evaluation system includes: the first body motion sensor wherein a space over bedding is a detection object; the second body motion sensor wherein the space to be extended outward from the outer circumference of the bedding is the detection object; and an evaluating means for evaluating the moving state and sleeping state of a sleeping person, based on the detection results of the first and second body motion sensors. The evaluating means determines the bedding-in motion of the sleeping person when the state is changed from the one, where the first and second body motion sensors do not detect a body motion, into the one, where the first and second body motion sensors substantially simultaneously detect the body motion. The first body motion sensor has the first relatively larger threshold and the second relatively smaller threshold. Determination is made by whether a value reaches the first threshold or the non-detection state of the second body motion sensor continues for a fixed time or more in a state where a value reaches the second threshold but does not reach the first threshold, etc. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a sleep state evaluation system and an illumination system using the sleep state evaluation system, and particularly uses an image sensor such as an infrared human body detection sensor to accurately detect a bedtime (user) waking up for a restroom at night or when getting up when waking up. The present invention relates to an automatic control system for detecting and controlling the environment and equipment.

  Detecting bed movement while sleeping and other body movements during sleep such as turning over, and more accurately assessing sleep state, and automatically controlling lighting equipment and other electrical devices according to the sleeper's state A sleep evaluation system using two infrared body motion sensors has been proposed.

  In the sleep evaluation system, a method of grasping a user's behavior during sleep by using two sensor output patterns is employed. When entering the floor, first enter the room and walk in the vicinity of the bedding. After the second body motion sensor detects the body motion, both sensors detect the body motion when sitting on the bedding. Therefore, when lying down for sleeping, only the first body motion sensor detects the body motion. That is, as shown in FIG. 10 (a), at the time of falling asleep after entering the bed, the intermittent detection of the first body motion sensor starts first after the start of the intermittent detection of the second body motion sensor. The intermittent detection of the body motion sensor lasts longer. In addition, at the time of getting out of bed, first, the first body motion sensor detects body motion in the lying state, then both the sensors detect body motion by raising the body, and finally the second body by leaving the bedding. Only the body motion sensor detects body motion. That is, as shown in FIG. 10 (b), at the time of getting out of bed, first, intermittent detection of the second body motion sensor starts after the start of intermittent detection of the first body motion sensor, The intermittent detection of the body motion sensor lasts longer.

JP 2008-505 Gazette

In the configuration described in Patent Document 1, only the first body motion sensor detects a certain amount of body motion after both the first and second body motion sensors detect body motion when sitting on the bedding. It is determined that the user lay down on the bedding at the time (the lying state). This determination is made by setting a threshold value for the body motion detection amount of the first body motion sensor and determining whether or not the threshold value is exceeded. However, since there is variation in the lying action (behavior) depending on individual differences and situations by the user, it is difficult to reliably determine that the person is lying down only with a certain threshold value. If the user is lying down and cannot detect it, lighting control such as turning off or dimming cannot be performed accordingly, even though the user is lying for sleep. Unnecessary lighting will continue to be turned on. Considering the physiological awakening action of light, maintaining such lighting will prevent the user from falling asleep, which is disadvantageous to the user.
Similarly, even if the user's getting-off operation cannot be detected, energy is wasted by continuing to turn on the lighting after leaving the room.

  The present invention has been made in view of the above circumstances, and more accurately detects a user's lying (side-down state) and minimizes a user's disadvantage even when the user cannot be detected. Objective.

  In addition, the present invention evaluates a user's sleep state with high accuracy, detects not only the presence of a person but also a person's action, and provides sufficient light only in a scene that really needs brightness. An object of the present invention is to provide a lighting system that can obtain a high energy saving effect.

Therefore, the sleep state evaluation system of the present invention includes a first body motion sensor that detects a space on the bedding occupied by the body of the sleeping person when the sleeping person lies on the bedding, and the sleeping person on the bedding. A second body motion sensor for detecting a space extending outward from the outer periphery of the bedding, with a plane parallel to the bedding having a height substantially equal to the shoulder position of the sleeping person when taking a long-sitting posture; Evaluation means for evaluating a sleeper's dynamics and sleep state based on detection results of the first body motion sensor and the second body motion sensor, wherein the evaluation means includes the first body motion sensor and When the second body motion sensor detects a body motion, the first body motion sensor and the second body motion sensor detect a body motion substantially simultaneously. The first body motion sensor only When the body motion is detected, it is determined that the sleeping person lies on the bedding, and the first body motion sensor has a relatively large first threshold value and a relatively small second threshold value. And the non-detected state of the second body motion sensor continues for a certain time or more in a state where the first threshold value is reached or the second threshold value is reached but the first threshold value is not reached. It is characterized in that it is determined that the user lies on the bedding.
According to this configuration, even when the number of single body motions detected by the first body motion sensor is slightly less, the recumbent state is determined together with the detection state of the second body motion sensor. It becomes possible to improve.

Further, in the sleep state evaluation system according to the present invention, the evaluation unit determines that the user has fallen asleep or left when the outputs of the first and second body motion sensors have disappeared for a preset holding time. Like to do.
According to this configuration, since the user's body movement cannot be detected for a certain period of time, it is determined that the user has fallen asleep or left, so malfunction can be avoided. For example, in the case of a lighting system, since the lighting fixture is turned off or dimmed, it is possible to avoid continuation of lighting due to the malfunction. In addition, since the same control logic can be used for lighting control by entering or leaving the room, the system can be simplified.

In the sleep state evaluation system according to the present invention, the evaluation unit includes first and second holding times A and B in each of the occupancy state and the sitting state in which the user is present around the bedding. The second holding time B is longer than the first holding time A, and when the second holding time, the first and second body motion sensors do not detect body motion, the second holding time B is in a sleeping state. It includes what is judged.
According to this configuration, by setting the holding time relatively long when sitting on the bedding, body movement can be easily detected before turning off, and malfunction of the system can be avoided.

Moreover, the lighting system of this invention includes what controls a lighting fixture based on the evaluation result of the said evaluation means.
According to this configuration, by setting the holding time relatively long when sitting on the bedding, body movement can be easily detected before the light is turned off, and sudden light turn-off due to the malfunction can be avoided.

In the illumination system according to the present invention, the evaluation unit includes first and second holding times A and B in a occupancy state where the user is present around the bedding and in the sitting state, respectively. The second holding time B is longer than the first holding time A, and when the second holding time, the first and second body movement sensors do not detect body movement, the lighting apparatus is turned off or adjusted. Includes things that shine.
According to this configuration, even when the body movement is small while sitting on the bedding, body movement can be detected, and sudden turn-off due to malfunction can be avoided. Further, since the holding time is set short when the user is in the room, the lighting is not maintained unnecessarily for a long time when the user leaves the room.

As described above, according to the present invention, even when the number of single body motions detected by the first body motion sensor is slightly small, the lying state is determined together with the detection state of the second body motion sensor. Therefore, it is possible to improve the accuracy of the recumbent state determination.
In addition, according to the lighting system of the present invention, since lighting control is performed based on the determination result of the sleep state evaluation system, it is possible to perform lighting control that is fine and wasteful.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
(Embodiment 1)
1 and 2 are explanatory views showing the sleep state evaluation system according to Embodiment 1 of the present invention (FIG. 2 is an enlarged view of a main part of FIG. 1), and FIG. 3 is an illumination system using this sleep state evaluation system. FIG. As shown in FIGS. 1 to 3, the sleep state evaluation system includes a first body motion sensor 101 that detects a space on the bedding occupied by the body of the sleeper P when the sleeper P lies on the bedding. And a space extending outward from the outer periphery of the bedding, with the bottom surface being a plane parallel to the bedding having a height approximately equal to the shoulder position of the sleeper P when the sleeper P takes a long-sitting position on the bedding A second body motion sensor 102 as an object, and an evaluation unit 104 that evaluates the dynamics and sleep state of the sleeper P based on the detection results of the first body motion sensor 101 and the second body motion sensor 102; The evaluation means includes the first body motion sensor and the second body motion sensor from a state in which the first body motion sensor and the second body motion sensor are not detecting body motion. Go to sleep when body movement is detected at the same time When it is determined that P has entered the floor (sitting) and only the first body motion sensor is detecting body motion, it is determined that the sleeper P is lying on the bedding, and the first body motion is determined. The sensor has a relatively large first threshold and a relatively small second threshold, and the first threshold is reached or the first threshold is reached. It is characterized in that it is determined that the second body motion sensor has not been detected for a certain period of time or not, and that the user lies on the bedding.
Here, the state A indicates a recumbent state, the state B indicates a seated state, and the state C indicates a state outside the bedding.

The evaluation unit 104 evaluates the sleep state based on the calculation result of the calculation unit 103 that calculates the dynamics of the sleeper P based on the detection results of the first body motion sensor 101 and the second body motion sensor 102. . Further, lighting control of the lighting fixture 300 is performed by the control unit 200. Reference numeral 400 denotes an operation unit.
Here, the first and second body motion sensors are infrared human body detection sensors that detect the presence or absence of a person and movement by capturing a weak change in infrared rays emitted by a living body. As shown in FIG. 5, the sensor outputs a rectangular signal when body movement is detected, as shown in an example of an output signal associated with the occurrence of body movement. Therefore, the amount of body movement is obtained from the number of rectangular waves and the sum of rise times. be able to.

The first body motion sensor detects the space (first detection space) D1 on the bedding occupied by the body of the sleeper P when the sleeper P lies on the bedding (state A), and detects the second body The motion sensor is a space that extends outward from the outer periphery of the bedding, with the bottom surface being a plane parallel to the bedding that is substantially the same height as the shoulder position of the sleeper P when the sleeper P takes a long sitting posture (state B). (Second detection space) D2 is a detection target.
Here, the calculation unit 103 performs signal processing from the body motion sensor, and sends a control signal to the control unit 200 based on the processing result.

Here, the operation unit 400 is an interface for the user to perform various settings of the present system. Specifically, the operation unit 400 performs automatic illumination control settings, manual operations, and the like.
The control unit 200 receives a control signal from the calculation unit 103 and controls the lighting device.
Furthermore, the luminaire 300 receives a control signal from the control unit 200, and performs lighting / extinguishing / dimming.

  These first and second body motion sensors 101 and 102 only need to recognize the state of a person. When used in the dark, an infrared sensor or the like is used, but when used in a light place. For example, a camera using a solid-state imaging device such as a CCD image sensor or a CMOS image sensor is used, and a wide-angle lens, a fish-eye lens, or the like is used as a lens.

  Conventionally, after both the first and second body motion sensors detect body motion when sitting on the bedding, the user lies on the bedding when only the first body motion sensor detects a certain amount of body motion. It is determined that it is in a lying state. This determination is made by setting a threshold value in the body motion detection amount of the first body motion sensor and determining whether or not the threshold value is exceeded. In this embodiment, this threshold value is set in two stages. Here, it is assumed that the amount of body movement is quantified by the number of rectangular waves (number of peaks) of the sensor output waveform, and the threshold (low) is 3 and the threshold (high) is 6.

As shown in FIG. 4, when both sensors 101, 102 first body motion sensor 101 detects a sufficient amount of body movement alone after detecting the body movement, has reached the threshold value (high) T _H Immediately, it is determined to be in a lying state. On the other hand, as shown in FIG. 5, when the first body motion sensor alone is not detected so much and only the threshold value (low) is reached, the output of the subsequent second body motion sensor is displayed at _TL. wait determined that lying state when T _R which intangible motion of a predetermined time is confirmed (If body movement is confirmed before reaching the predetermined time, determines again seating state, resets the body movement amount). This makes it easier to determine the lying state even when the user lies on the bedding without moving the body much. Even if the first body motion sensor 101 detects that the body motion is continuously detected by itself while moving in the sitting state due to the movement of the hand or the like, and the threshold (low) is exceeded, the second body body is subsequently detected. Since the movement detection sensor is again determined to be in the seating state when the body movement is detected, erroneous detection of the lying state can be prevented.

  Hereinafter, the sleep state evaluation system 1 of the present embodiment will be described in detail. As shown in FIGS. 1 and 2, a first body motion sensor 101 that detects a space D1 on the bedding 2 occupied by the body of the sleeper P when the sleeper P lies on the bedding (bed) 2. And a plane parallel to the bedding 2 having a height substantially equal to the shoulder Ps position of the sleeper P when the sleeper P takes a long-sitting posture on the bedding 2 (a posture in which the upper body is raised) And a second body motion sensor 102 having a space D2 extending outward from the outer periphery of the bedding 2 as a detection target.

  As shown in FIGS. 1 and 2, the first detection space D <b> 1 has the plane (the upper surface of the bed) of the bedding 2 as the bottom surface D <b> 1 b, and is a plane parallel to the plane of the bedding 2 and lying down It is a substantially rectangular space defined as a top surface D1u that is a plane higher than the highest part (usually the nose position n) in a side view and a vertical surface along the outer periphery 2a of the bedding 2 as an outer peripheral surface D1s. .

  Therefore, the upper surface D1u that defines the first detection space D1 varies vertically depending on the body shape of the sleeping person P. For example, when the sleeping person P has a body shape in which the abdomen protrudes, the upper surface D1u that defines the first detection space D1 is set at a position higher than the highest position of the abdomen of the sleeping person P.

  As shown in FIGS. 1 and 2, the second detection space D2 has a bottom surface D2b having a height substantially equal to the shoulder Ps position of the sleeping person P sitting on the bedding 2, and a predetermined width w from the bottom surface D2b. It is a substantially rectangular parallelepiped space defined by an upper surface D2u set at a high position and a vertical surface D2s at a position protruding outward from the outer periphery 2a of the bedding 2.

  Therefore, the bottom surface D2b that defines the second detection space D2 varies vertically depending on the physique of the sleeping person P. In addition, the bottom surface D2b that defines the second detection space D2 is located above the top surface D1u that defines the first detection space D1, and the first detection space D1 and the second detection space D2 intersect each other. Never do.

  The first body motion sensor 101 and the second body motion sensor 102 are both composed of pyroelectric infrared sensors, and are attached to the headboard 2b of the bedding 2 and the wall 3 of the bedroom, respectively. Each of the sensors S1 and S2 detects infrared rays emitted from the body of the sleeping person P when a part of the body of the sleeping person P enters the detection spaces D1 and D2, respectively. Based on the change, the sleeper P enters the detection spaces D1 and D2 and the body movement of the sleeper P in the detection spaces D1 and D2 is detected.

  The first and second body motion sensors 101 and 102 may be optical sensors that detect reflected light in addition to pyroelectric infrared sensors, and human feelings that utilize reflection of ultrasonic waves. A sensor may be used. In addition, each of the body motion sensors 101 and 102 may be configured by providing a plurality of the same type of sensors, or may be configured by combining a plurality of different types of sensors.

  Furthermore, in this embodiment, the bedding 2 is a bed, and the plane on which the sleeping person P lies is formed at a predetermined height above the floor F, but the bedding 2 is a futon laid directly on the floor surface. Also good.

  Next, an evaluation unit that evaluates the dynamics and sleep state of the sleeping person P based on detection signals from the first and second body motion sensors 101 and 102 will be described.

  As shown in FIG. 3, the evaluation means 104 of the present embodiment is connected to a calculation unit 103 composed of a microcomputer connected to the first and second body motion sensors 101, 102 by wire or wirelessly. And the dynamics and sleep state of the sleeping person P are evaluated based on the presence / absence and timing of the signal part indicating the body movement in the detection signals transmitted by the second body movement sensors 101 and 102. Here, the output of the evaluation means 104 controls the lighting of the lighting apparatus 300 by the control unit 200. In addition, a control device connected to a microcomputer for recording evaluation results and various home appliances based on the evaluation results. A circuit or the like may be provided.

  The sleep state evaluation performed by the evaluation unit 104 including a microcomputer will be specifically described with reference to FIGS. Assume that detection signals are output from the first and second body motion sensors 101 and 102. 4 and 5, the time axis is taken from the left to the right, and a portion ps (hereinafter referred to as a pulse portion) protruding in a pulse shape of each detection signal indicates the body movement of the sleeping person.

  The evaluation means 104 includes a detection signal S1 from the first body motion sensor 101 (hereinafter referred to as a first detection signal) and a detection signal S2 from the second body motion sensor 102 (hereinafter referred to as a second detection signal). In any of the cases, in the state where the pulse part ps is not present ((R1) in FIGS. 4 and 5), it is determined that the sleeping person P does not exist in the bedroom or is located in the bedroom and away from the bedding 2.

  Next, when the first detection signal S1 does not yet have the pulse part ps but the second detection signal S2 has the pulse part ps ((R2) in FIGS. 4 and 5), the evaluation means 104 It is determined that the sleeping person P has approached the bedding 2 (bed). The sleeping person P in a state of approaching the bedding 2 is shown on the right side of FIG. 1 (state C in FIG. 1).

  Here, when the spread in the plane direction of the second detection space D2 extends to almost the entire area of the bedroom as shown in FIG. 1, the evaluation means 104 indicates that the detection signals S1 and S2 are detected in FIGS. When the state (R2) is reached, it can be recognized that the sleeper P has entered the bedroom.

  Next, when the state of (R2) in FIGS. 4 and 5 is changed to a state in which both the first and second detection signals S1 and S2 have a pulse part ps ((R3) in FIGS. 4 and 5), the evaluation means 104 It is determined that the sleeping person P sits down or sits down on the bedding 2 (when the bedding 2 is a futon, it is in a standing or sitting position on the futon: state B). A sleeping person P sitting on the bedding 2 is shown in FIGS. 1 and 2. The above-described operation performed by the sleeper P is referred to as entering or entering operation.

  Next, the pulse part ps of the second detection signal S2 disappears, and only the first detection signal S1 has the pulse part ps, and the occurrence frequency exceeds the threshold (high) ((( In R4)), the evaluation unit 4 determines that the sleeping person P lies on the bedding 2.

  On the other hand, the pulse part ps of the second detection signal S2 disappears, and only the first detection signal S1 has the pulse part ps, and the occurrence frequency exceeds the threshold (low) ((R4L in FIG. 5). )), The pulse part ps disappears from the first detection signal S1 ((R5L) in FIG. 5), and when a predetermined time is exceeded in the state of inactivity ((R5) in FIG. 5). Then, the evaluation unit 104 determines that the sleeping person P lies on the bedding 2.

  Thereafter, when the occurrence frequency of the pulse part ps of the first detection signal S1 gradually decreases and becomes less than the predetermined frequency ((R6) in FIGS. 4 and 5), the evaluation means 104 causes the sleeper P to sleep. Judge that it entered. The evaluation means 104 detects body movements such as turning the sleeping person P and myoclonus using the pulse part ps generated in the sleep state ((R6) in FIGS. 4 and 5). When the frequency of body movement of the sleeping person P after going to sleep is high, it is evaluated that the quality of sleep is not high, and when the frequency of body movement is low, it is evaluated that the quality of sleep is high.

  Next, when the occurrence of the pulse part ps of the first detection signal S1 is considerably increased from a predetermined frequency ((R7) in FIG. 5), the evaluation unit 104 determines that the sleeper P has awakened. . In this state, the sleeping person P is awake but lies on the bedding 2.

  Subsequently, in a state having a pulse part ps in both the first and second detection signals S1 and S2 ((R8) in FIG. 5), the evaluation means 104 causes the sleeper P to get up on the bedding 2 ( When the bedding 2 is a futon, it is determined that the user has a standing posture or a sitting posture on the futon).

  Thereafter, when the pulse part ps of the first detection signal S1 disappears and only the second detection signal S2 has the pulse part ps ((R9 in FIG. 5)), the evaluation means 104 determines that the sleeping person P It is determined that the user has left the bedding 2. The operation performed by the sleeper P is referred to as leaving or getting out.

  Finally, when both the first and second detection signals S1 and S2 have no pulse part ps ((R10) in FIG. 5), the evaluation means 104 further determines that the sleeper P is further away from the bedding 2. It is determined that the user has left the bedroom.

  Therefore, the evaluation means 104 detects the sleeping state ((R6) in FIG. 5) and the bed movement of the sleeper P ((R8), (R9), (R10) in FIG. 5) and entering the bed. When it is determined that the actions ((R1), (R2), and (R3) in FIG. 5) have occurred in order, it is determined that the sleeper P has left the bed in the middle of going to bed, for example, to go to the toilet. Lower the rating.

  Further, the first detection signal S1 while the sleeper P is going to the toilet is in a state having no pulse part ps, but the evaluation means 104 determines that the first detection signal S1 during this period is a sleep state. Exclude from data for evaluation.

  Further, the evaluation means 104 determines the elapsed time (from (R5 in FIG. 4) until it is determined that the sleeper P has fallen asleep (state (R6) in FIG. 4) after it is determined that the sleeper P has entered the bed. ), The sleep state evaluation is lowered when the elapsed time is long, and the sleep state evaluation is increased when the elapsed time is short. This is based on the fact that the time until sleep (sleep latency) reflects the quality of sleep.

Next, the recumbent state detection operation using the sleep state evaluation system of the present embodiment will be described in detail.
FIG. 6 is a flowchart showing the control operation.

First, the process starts when the first and second body motion sensors detect the body motion and determine the seated state (step S1001). Next, while the second body motion sensor does not detect the body motion, the body motion amount is accumulated from the output of the first body motion sensor (when the second body motion sensor detects the body motion, the above integration is performed). The amount of body movement is reset (step S1002), and the outputs of the first and second body movement sensors are checked (step S1003).
Then, it is determined whether or not the second body motion sensor has detected body motion (step S1004). If it is determined that the second body motion sensor has not detected the body motion, the body motion amount of the first body motion sensor is integrated (step S1005). ).

Then, it is determined whether or not the accumulated body motion amount of the first body motion sensor has reached the set threshold value (low) (step S1006). If it has reached, the timer is started, and the process proceeds to step S2001 shown in FIG.
On the other hand, if it is determined in step S1006 that the integrated body motion amount of the first body motion sensor has not reached the set threshold value (low), the process returns to step S1003, and the first and second body motion sensors. Check the output.
Furthermore, if it is determined in step S1004 that the second body motion sensor has detected body motion, the process returns to step S1002, and the body motion amount of the first body motion sensor is reset.

  If the accumulated body motion amount of the first body motion sensor has not reached the set threshold value (low), it is determined whether or not the operation has proceeded to step S1003 (step S1006). The process moves to step S2001.

After the timer is started, the body motion amount of the first body motion sensor and the time counting by the timer are continued until the second body motion sensor detects the body motion, and the outputs of the first and second body motion sensors are checked. (Step S2002).
Then, it is determined whether or not the second body motion sensor has detected body motion (step S2003). If it is determined that the body motion has not been detected, the body motion amount of the first body motion sensor is integrated (step S2005). ).

Then, it is determined whether or not the accumulated body motion amount of the first body motion sensor has reached the set threshold value (high) (step S2006), and if it reaches, it is determined that the body is in the lying state (step S2007).
If it is determined in the determination step S2006 that the integrated body motion amount of the first body motion sensor has not reached the set threshold value (high), the timer is started (step S2008), and the timer reaches the set time. It is determined whether or not (step S2009). If the timer has reached the set time, it is determined to be lying down (step S2007).
If the time set by the timer has not reached in the determination step S2009, the process returns to step S2002.

If it is determined in determination step S2003 that the second body motion sensor has detected body motion, the timer is reset (S2004), and it is determined in step S1001 in FIG.
Thus, it is determined that the body is in the lying state by detecting whether the integrated value of the body movement amount reaches the set threshold value (high) or the latter reaches the set time. If the second body motion sensor detects a body motion before reaching this determination, the timer is reset to return to the time when the seating state is determined.

(Embodiment 2)
Next, a second embodiment of the present invention will be described. In Embodiment 2, an illumination system using this sleep state evaluation system will be described.
Here, the control flow when performing lighting control according to the action from the body movement of the user in the bedroom using this technique is shown.
As shown in FIG. 8, there are five control statuses: “Leave”, “Available”, “Attached”, “Attached”, “Asleep / Leave”, and each means the following states: To do.

Here, leaving the room means a state in which the user is not present in the bedroom and neither sensor detects body movement. At this time, the lighting system is controlled so that the lighting fixture is turned off or lightly turned on by dimming.
The presence of the room means a state where the user exists in the bedroom other than on the bedding and only the second body motion sensor detects the body motion. At this time, the lighting system is controlled to be in a lighting state suitable for an action in the bedroom.

The presence of the floor means a state in which both sensors detect body movements and the user is seated on the bedding. At this time, the lighting system is controlled so as to be in a lighting state suitable for the action on the bedding.
The term “bed-in” refers to a state where the user is lying on the bedding and the user is determined to be lying down by the above-described lying-down state detection flow. At this time, the illumination system is controlled so that the illumination is turned off or is weakly lit by dimming for falling asleep.

  In addition, sleep / exit is a state in which the movement of both sensors is not detected for a certain period of time without transitioning from the in-bed status to the in-bed status, and the user does not enter the lying state and enters the sleep state. It is said that it has become or has left the room. At this time, the lighting system is controlled so that the lighting apparatus is turned on weakly by turning off or dimming.

In the lighting system of the present embodiment, each of the above statuses is controlled based on the following logic.
When the user enters the bedroom, first, only the second body motion sensor detects the body motion and shifts from the exit status to the occupancy status (path 101). Thereafter, when the user leaves the room without moving onto the bedding and the body movement of both sensors is not detected, the lighting is kept on for the first holding time A and the room exit status is returned (path 102).

  From the occupancy status, when the user sits on the bedding and both sensors detect body movements at the same time, the status shifts to the occupancy status. After that, if it is determined that the user is in the lying state by the above-mentioned lying state detection flow, a transition to the entrance status is made (path 104), but body movements of both sensors are not detected without being determined to be in the lying state. Then, the lighting is kept on only for the second holding time B and the sleep / exit status is entered (path 105). Accordingly, even when the user's lying state or leaving the room is not detected, the illumination can be turned off or dimmed, and sleep inhibition or energy waste can be prevented. At this time, the second holding time B is preferably longer than the holding time A because the user's body movement is smaller on the bedding than when moving outside the bedding.

  When the user gets up from the bed entry status or the sleep / leaving status, and both sensors detect body movements, the user returns to the bed status (path 103).

  As described above, according to the illumination system of the present invention, even when the number of single body motions detected by the first body motion sensor is slightly small, the lying state is determined together with the detection state of the second body motion sensor. Therefore, it becomes possible to improve the determination accuracy of the recumbent state, and it is possible to perform lighting control that is fine and wasteful.

  In the above embodiment, the lighting system using the sleep state evaluation system has been described. However, the present invention is not limited to the lighting system, and can be applied to air conditioner control in summer, automatic control of aroma and music, and the like. . In particular, it is necessary to turn on the air conditioner when standing, but if you fall asleep and the air conditioner is on for a long time, various problems such as catching a cold may occur. However, a higher degree of control is possible by controlling using the sleep state evaluation system of the present invention.

(Embodiment 3)
Next, a third embodiment of the present invention will be described. In the present embodiment, a house equipment control system using this sleep state evaluation system will be described. In this embodiment, as shown in the block diagram of FIG. 9, in addition to the lighting system of the first embodiment shown in FIG. 3, the control device 200 includes a lighting device 300, various home appliances 500 such as an air conditioner, and an intruder alarm. An apparatus 600 is connected, and a recording apparatus 700 connected to the evaluation unit 104 and an operation unit 400 are further provided. The operation unit includes a communication device 401 and an Internet network 402, and the evaluation unit 104 is connected to the Internet network 402 via the communication device 401.

  Here, the evaluation result of the sleep state output by the evaluation unit 104 is recorded and accumulated in the recording device 600, and the recorded and accumulated evaluation result (for example, evaluation results for one week) is output to the communication device 401 at a predetermined timing. Is done. The communication device 401 transmits a certain amount of evaluation results to an organization such as a medical institution that can analyze the evaluation results via the Internet network 402. The medical institution that has received the evaluation result analyzes a certain amount of the evaluation result and diagnoses the health condition of the sleeping person P.

  In addition, when the evaluation unit 104 is directly connected to the communication device 401, the medical institution side can receive the evaluation result output from the evaluation unit 104 in real time. In addition, the transmission destination of the evaluation result by the communication apparatus 401 may be an individual who owns a similar sleep state evaluation system other than the medical institution.

  In addition to the evaluation of the sleep state of the sleeping person P, it is possible to detect a more urgent suspicious person's intrusion by monitoring the evaluation result in real time by a third party at the transmission destination of the evaluation result It is.

  For example, a third party at the transmission destination of the evaluation result leaves the sleeping person P after the evaluation means 104 determines that the sleeping person P has entered the floor (from (R2) to (r3) in FIG. 4) (see FIG. 4). If the generation of the pulse part ps is detected only in the second detection signal S2 without determining (R8) to (R9) in FIG. 4, the second detection space D2 includes a person other than the sleeping person P. It can be determined that a human (intruder) is approaching.

  Next, the control with respect to the lighting fixture 300, the air-conditioner 500, and the intruder warning device 600 via the control apparatus 200 is demonstrated concretely.

  The lighting fixture 300 in this Embodiment is comprised from the bed lamp 8a which illuminates the upper surface vicinity of the bedding 2, and the foot lamp 8b which illuminates the floor surface around the lower part of the bedding 2, as shown in FIG.

  In the output from the evaluation means 104, the control device 200 turns on the bedside lamp 8a when it is determined that the sleeper P has performed a bed-entry operation (from (R2) to (R3) in FIG. 4). The bedside lamp 8a is turned on by outputting a signal, and when the process shifts to the determination that the sleeping person P lies down ((R4) in FIG. 4), an off signal is output to the bedside lamp 8a. Turn off the light.

  Accordingly, the bedside lamp 8a is automatically turned on when the sleeping person P enters the bed and takes a long-sitting posture on the bedding 2, and is automatically turned off when the sleeping person P lies down. The operation of 8a becomes unnecessary, which is convenient when reading on the bedding 2.

  In addition, in the output from the evaluation unit 104, the control device 200 determines that the sleeper P has awakened from the sleep state and got up on the bedding 2 (from (R7) to (R8) in FIG. 4). When the bedside lamp 8a is turned on by outputting an ON signal to the bedside lamp 8a and then the determination is made that the sleeper P has left the bed ((R9) in FIG. 4), an OFF signal is output to the bedside lamp 8a. Is output to turn off the bedside lamp 8a.

  Therefore, the bedside lamp 8a is automatically turned on when, for example, the sleeping person P wakes up in the night and gets up on the bedding 2, and is automatically turned off when the sleeping person P leaves the bedding 2. For P, the operation of the bedside lamp 8a in the dark is unnecessary, which is convenient.

  Further, in the output from the evaluation unit 104, the control device 200 leaves the bedridden P after getting up on the bedding 2 (from (R7) to (R8) in FIG. 4) ((R9 in FIG. 4). When there is a determination of)), an ON signal is output to the foot lamp 8b to light the foot lamp 8b. Thus, for example, the feet of the sleeping person P who gets up in the middle of the night and leaves the bed to go to the bathroom are illuminated, and safety such as prevention of falling of the sleeping person P is achieved.

  Further, the control device 200 assumes that the output from the evaluation means 104 is that the sleeping person P has gone through sleep ((R2) to (R3) in FIG. 4) ((R6) in FIG. 4). When there is a determination, a signal for lowering the set temperature is output to the air conditioner 500. As a result, the temperature of the bedroom is lowered and the lowering of the deep body temperature of the sleeping person P who enters sleep is promoted.

  Further, when the control circuit 6 determines in the output from the evaluation means 104 that the sleeper P has entered the floor (from (R2) to (R3) in FIG. 4), the control circuit 6 responds to the intruder alarm device 600. Then, when it is determined that the sleeping person P has left the bed (from (R8) to (R9) in FIG. 4), the off signal is output to the intruder alarm device 600. As a result, the intruder alarm device 11 is automatically activated while the sleeper P is sleeping, so that the sleeper P can sleep without being switched to the operating state of the intruder alarm device 11. It is prevented from entering and safety is improved.

  Further, the control device 200 determines that the sleeping person P enters the floor (from (R2) to (R3) in FIG. 4) in the output from the evaluation unit 104, and then the sleeping person P leaves the bed ((( If the generation of the pulse part ps is detected only in the second detection signal S2 without determining from R8) to (R9)), a person other than the sleeper P (intrusion) enters the second detection space D2. Can be configured to determine that the person has approached. In this case, the control device 200 can report the occurrence of an intruder to the outside by operating a notifying device (not shown) for notifying the occurrence of an intruder to an external organization such as a security company.

  In addition, when the evaluation means 104 can output the command signal to external apparatuses, such as the lighting fixture 300, the said function in the control apparatus 200 may be comprised so that the evaluation means 104 may perform.

  As described above, according to the sleep state evaluation system 1 of the present embodiment, the bedridden P's entering operation and getting out of bed based on the detection results of the first and second body motion sensors 101 and 102 having different detection target spaces. Body movements such as turning during sleep of the sleeper P by the first body motion sensor 101 that detects a space occupied by the body of the sleeper P lying on the bedding 2 is detected. Therefore, the sleep state can be more accurately evaluated based on the detection results. In addition, since the control of the electric device such as turning on / off the lighting is automatically performed according to the state of the sleeping person P, the operation by the sleeping person P is omitted, which is convenient.

Explanatory drawing which shows the sleep state evaluation system of Embodiment 1 of this invention. Main part expansion explanatory drawing which shows the sleep state evaluation system of Embodiment 1 of this invention. The block diagram which shows the sleep state evaluation system of Embodiment 1 of this invention. The figure which shows the output signal of the body movement sensor of Embodiment 1 of this invention. The figure which shows the output signal of the body movement sensor of Embodiment 1 of this invention. The flowchart figure which shows the control action of the sleep state evaluation system of Embodiment 1 of this invention. The flowchart figure which shows the control action of the sleep state evaluation system of Embodiment 1 of this invention. Explanatory drawing which shows control of the illumination system of Embodiment 2 of this invention. The block diagram which shows the housing equipment control system of Embodiment 3 of this invention. The figure which shows the output signal of the sleep state evaluation system of a prior art example

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Body motion detection part 101 1st body motion sensor 102 2nd body motion sensor 103 Calculation part 104 Evaluation means 200 Control part 300 Lighting fixture 400 Operation part

Claims (5)

A first body motion sensor that detects a space on the bedding occupied by the body of the sleeper when the sleeper lies on the bedding, and a shoulder of the sleeper when the sleeper takes a long-sitting posture on the bedding A second body motion sensor having a plane parallel to the bedding having a height substantially equal to the position as a bottom surface, and a space extending outward from the outer periphery of the bedding, the first body motion sensor, and the first Evaluation means for evaluating the sleeper's dynamics and sleep state based on the detection result of the body motion sensor of 2,
In the evaluation means, the first body motion sensor and the second body motion sensor are substantially simultaneously moved from a state where the first body motion sensor and the second body motion sensor are not detecting body motion. When the sleeper is in the state of detecting the sleep
When only the first body motion sensor is in a state of detecting body motion, it is determined that the sleeping person lay on the bedding,
The first body motion sensor has a relatively large first threshold value and a relatively small second threshold value, and reaches the first threshold value or reaches the second threshold value. A sleep state evaluation system for determining that the second body motion sensor has not been detected for a certain period of time or more in a state where the first threshold is not reached, and that the user lies on the bedding. The sleep state evaluation system according to claim 1,
The evaluation means is a sleep state evaluation system in which the output of the first and second body motion sensors determines that the user has fallen asleep or left when the preset holding time disappears. The sleep state evaluation system according to claim 1,
The evaluation means has first and second holding times A and B in each of the occupancy state and the sitting state where the user is present around the bedding, and the second holding time B is the first holding time B. 1. A sleep state evaluation system that determines a sleep state when the second hold time and the first and second body motion sensors do not detect body motion, which is longer than one hold time A. A lighting system using the sleep state evaluation system according to any one of claims 1 to 3,
A lighting system for controlling a lighting fixture based on an evaluation result of the evaluation means. The lighting system according to claim 4,
The evaluation means has first and second holding times A and B in each of the occupancy state and the sitting state where the user is present around the bedding, and the second holding time B is the first holding time B. When the first holding time A is longer than the first holding time A, and the first and second body motion sensors do not detect body movement,
Lighting system that turns off or dimmes lighting fixtures.

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