JP2019069093A - Illumination control device and illumination control method - Google Patents

Abstract

To provide an illumination control device that can awaken a sleeper comfortably (awaken pleasantly).SOLUTION: An illumination control device 7 is constituted of a biological information acquisition part 71, an illumination control part 72 and a storage part 73. The illumination control device includes: the acquisition part 71 for acquiring biological information of a person to be measured which is acquired from a vibration sensor 5a; and the illumination control part 72 for controlling a light emission state for awakening the person to be measured from sleep, which reads out a light emission pattern from the storage part based on the acquired biological information to irradiate the person to be measured using an illumination device.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a lighting control device and a lighting control method for controlling a lighting device.

  There is a lighting control device which controls switching to lighting which reduces melatonin secretion suppression of a sleeper (refer to patent documents 1). Here, melatonin is a sleep hormone that regulates the rhythm of sleep and awakening, and is known to be suppressed by light. Therefore, the lighting control device described in Patent Document 1 accelerates the switching timing to the lighting device (melatonin secretion suppression reduction device) for reducing the suppression of melatonin secretion, thereby promoting melatonin secretion and facilitating sleep of the sleeping person. I have to.

Patent 4894185 gazette

  The lighting control device described in Patent Document 1 can make the sleeping person sleep well. However, it is also desirable not only to be able to sleep smoothly but also to be able to wake up smoothly.

  The present invention has been made in consideration of the above-mentioned circumstances, and an object thereof is to provide a lighting control device and a lighting control method for awakening a sleeper smoothly.

  In order to solve the above-mentioned subject, one mode of the present invention irradiates the above-mentioned person to be measured from a lighting device based on the acquisition part which acquires the to-be-measured person's living body information acquired from a vibration sensor, and the acquired said living body information And a control unit that controls a light emission state of light that wakes up the subject from sleep.

  Further, one aspect of the present invention is the illumination control device as described above, further including: a storage unit that stores a light emission pattern representing the light emission state corresponding to the biological information, and the control unit The lighting device is controlled in accordance with the light emission pattern corresponding to information.

  Moreover, one aspect of the present invention is the illumination control device as described above, wherein the light emission pattern includes information indicating an irradiation time for irradiating the light, and the control unit is configured to acquire the acquired biological information. When the corresponding irradiation time has elapsed, the biological information is acquired again, and a light emission pattern corresponding to the relationship between the biological information acquired again and the biological information acquired last time is read from the storage unit to control the light emission state.

  Further, one aspect of the present invention is the illumination control device as described above, wherein the light emission pattern includes information indicating a color temperature of the light, and the control unit corresponds to the acquired biological information. The illumination device is controlled to emit light according to the color temperature.

  Further, one aspect of the present invention is a lighting control method in a lighting control apparatus connected to a lighting device, wherein the acquiring unit acquires biological information of a person to be measured obtained from a vibration sensor, and the control unit acquires Based on the living body information, the light emission condition of light, which is emitted from the illumination device to the subject and causes the subject to wake up from sleep, is controlled.

  According to the present invention, since the light emission condition of the light irradiated from the lighting device to the subject in the sleep state is controlled based on the acquired biological information, the light emission state according to the sleep condition of the subject Since the light can be emitted from the lighting device so that

It is a schematic block diagram which shows the structure of the illumination system by one Embodiment of this invention. It is a figure for demonstrating the light emission condition of the illumination which shows the color temperature and the irradiation time of the light which illumination irradiates a sleeper. It is a flowchart for demonstrating the process of the illumination control which an illumination control part performs.

Hereinafter, a lighting system according to an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic configuration view showing a configuration of a lighting system 1 according to an embodiment of the present invention.
The illumination system 1 includes a living body information detection device 5, an illumination device 6, and an illumination control device 7.
The living body information detection device 5 includes a vibration sensor 5a and a signal processing device 5b.
The vibration sensor 5a detects the vibration from the living body of the person to be measured, and outputs a body vibration signal. The vibration sensor 5a is formed of, for example, a sensor sheet which is a piezoelectric sensor, and is provided at a place where a person goes to bed. As a place to go to bed, there are a bed and a chair (sofa). For example, the vibration sensor 5a is disposed between the living body and the mattress.
The signal processing device 5b estimates the sleep state of the person to be measured by analyzing biological information (heart rate, respiration, body movement) of the person by the filter means based on the body vibration signal output by the vibration sensor 5a. Do. That is, the signal processing device 5b analyzes biological information (heart rate, respiration, body movement) of a person by the filter means based on the body vibration signal output from the vibration sensor 5a, and the person to be measured according to the analysis result The sleep state is estimated by obtaining an analysis result (represented by analysis result levels 1 to 5 in the present embodiment) representing the sleep state. The sleep state can be represented, for example, by the sleep depth. The process of this estimation may use an existing technology. The living body information detection apparatus 5 may be configured to include a pressure sensitive switch that determines whether or not a person to be measured is present at a place to go to bed (bed, chair, etc.).

The illumination device 6 includes low-color illumination 6 a, high-color illumination 6 b, and a light emission control unit 6 c.
The low color illumination 6a and the high color illumination 6b (illumination) are light sources, for example, LED illumination is used. The low color illumination 6a emits (lights up) a light bulb color, and the high color illumination 6b emits white (lights up). The color temperature of the low color illumination 6a is, for example, 2500 K (Kelvin), and is set to a color temperature lower than the color temperature of the high color illumination 6b (for example, 5000 K). That is, when both the low color illumination 6a and the high color illumination 6b are turned on, when waking up the sleeper (the subject), they emit mixed light by emitting light with mutually different color temperatures. And give sleepers radiation.
In the present embodiment, as described later, the low color illumination 6a and the high color illumination 6b have a constant color temperature of 3500 K, and the time (brightness) to shift from 0% to 100% (illumination) The light emission control unit 6c controls the sleeper on the vibration sensor 5a to emit light including an irradiation time). That is, when the light emission control unit 6c controls the low color illumination 6a and the high color illumination 6b to wake up the sleeper, the color temperature is constant, and the light whose illuminance shifts to 0% to 100% is , The sleeper who is on the vibration sensor 5a is irradiated.

The illumination control device 7 includes a biological information acquisition unit 71, an illumination control unit 72, and a storage unit 73, and the illumination control unit 6c is configured to turn on or off the low color illumination 6a and the high color illumination 6b, and to turn off the low color. The light emission intensity of the illumination 6a and the high color illumination 6b is controlled. Thereby, it is possible to illuminate with light of any color temperature and to control the lighting and extinguishing of the lighting device 6.
The biological information acquisition unit 71 is connected to the biological information detection device 5 and acquires an analysis result based on the biological information of the person to be measured obtained from the vibration sensor 5a. Here, the biological information acquisition unit 71 may be provided with the function of the signal processing device 5b, the biological information acquisition unit 71 may acquire the biological information from the vibration sensor 5a, and obtain the analysis result from the acquired biological information.
The illumination control unit 72 is connected to the output of the living body information acquisition unit 71, and based on the analysis result corresponding to the living body information of the sleeper, the lighting device 6 irradiates the measurement subject with light and wakes up the subject from sleep. Control the light emission status. The light emission state is, for example, at least one of the color temperature of the light emitted from the lighting device 6 and the irradiation time representing the light irradiation time, as long as the light emission state can be defined. The lighting control unit 72 controls the light emission intensity of each light emitted to the sleeper by the low color lighting 6a and the high color lighting 6b as the light emission condition, so that the lighting device 6 can achieve the target color temperature. Is controlled, and the irradiation time (period during which the lighting device 6 is lit) is controlled.

FIG. 2 is a view for explaining the light emission situation of the low color illumination 6a and the high color illumination 6b showing the color temperature and the illumination time of the light which the low color illumination 6a and the high color illumination 6b irradiate to the sleeper.
FIG. 2A is a diagram for explaining biological information. For example, the sleep state of the sleeper is associated with Level 1 to Level 5, which are analysis results based on biological information. Here, the sleep depth is "shallow" for level 1; the sleep depth is "slightly shallow" for level 2; the sleep depth is "normal" for level 3; "Deep" is associated with the deep sleep level "level 5". Here, the depth of sleep can also use the depth of “awakening” as level 0.
The signal processing device 5b determines which of the levels 1 to 5 the sleep corresponds to, based on the combination of the heart rate, the degree of respiration, the amplitude of body movement, and the period, which are biological information of the sleeper. Estimate the sleep state of the person. In addition, the illumination control unit 72 can store the estimated sleep state of the sleeper in the storage unit 73 in advance as an analysis result corresponding to the biological information.

FIG. 2B is a diagram for explaining an example of information stored in the storage unit 73.
Here, the light emission situation is determined by the light emission pattern. The light emission pattern is, for example, information including a color temperature and an irradiation time.
The light emission pattern A includes 3500 K as a color temperature and 1 minute as an irradiation time. Here, when the color temperature is specified, the lighting control unit 72 determines the light emission intensity of each of the low color lighting 6a and the high color lighting 6b according to a predetermined control rule, and thus the lighting device at the specified color temperature It is possible to light 6. However, in the present embodiment, as shown in FIG. 2, in the light emission pattern A to the light emission pattern E, although the color temperature is the same 3500K, different color temperatures may be set for each light emission pattern. Here, the value of the color temperature of 3500 K is a color temperature determined in consideration of the morning light (external light) at which the sleeper wakes up, and the lighting device 6 is turned on at this color temperature to be measured. Can be illuminated as light to wake up from sleep.
Here, in the case where the color temperature is set to a different color temperature according to the light emission pattern, for example, the desired color can be obtained by changing the color mixing ratio of the low color illumination 6a and the high color illumination 6b (for example, the ratio of emission intensity). It can be temperature. For example, it is possible to set the color temperature according to the indoor environment and the sleep state at the time when the subject is awakened. As an example, in a room provided with a curtain with a somewhat lower light shielding performance, in a time zone where outside light (sunlight) enters to some extent,
The high color illumination 6b may be set to be higher than the low color illumination 6a, and the illumination device 6 may be turned on in a state where the color temperature is somewhat high. Thereby, it is possible to wake up smoothly by irradiating the light of color temperature higher than external light. Also, in a room provided with a curtain with a somewhat high light shielding performance, the lighting device 6 with high color temperature when the sleep state of the subject is deep in an environment where external light (sunlight) does not get in too much When it lights up, it is possible to wake up the subject, but it may not always be comfortable. For example, the low color lighting 6a is set to be higher than the high color lighting 6b, and the color temperature is to some extent You may make it light the illuminating device 6 in a low state. If the sleep state does not approach the awake state even if the irradiation time has elapsed, the color temperature can be raised to illuminate the sleep state so that it can be awakened while gradually approaching the awake state. It can be awakened smoothly and comfortably. Such a light emission pattern can be arbitrarily determined according to the indoor environment, the degree to which outside light enters, the target wake time, the individual's characteristic of the subject being transitioned from the sleep state to the awakening, and the like.

  Moreover, among the light emission patterns, the irradiation time can be used as a time for the brightness of the low color illumination 6a and the high color illumination 6b to be irradiated to sleep to shift from 0% to 100%. The time to 100% lighting in luminescence patterns A to E was obtained by the analysis result of the vibration sensor, respectively. Non-REM sleep (including deep sleep state, brain waves become slow waves, respiration, heart rate, blood pressure decrease The sleep stage of the sleeper from the cycle of rem sleep (in the state of shallow sleep, the brain wave is an early wave close to the awake state, and breathing, heartbeat, blood pressure are disturbed). It can be set by estimating the transition of For example, as shown in FIG. 2, the irradiation time of 1 minute is set to reach 100% lighting during REM sleep (level 1), and the irradiation time of 5 minutes, 10 minutes, 15 minutes, 20 to levels 2 to 5 You may set minutes.

For example, as shown in FIG. 2, when the analysis result (biometric information) of the sleeper is level 1, the illumination control unit 72 determines that the sleep state of the sleeper is in the “shallow” state, and Control is performed such that the low color illumination 6a and the high color illumination 6b illuminate the sleeper with light having a color temperature of 3500 K and an irradiation time of 1 minute.
In addition, when the analysis result of the sleeper is level 2, the lighting control unit 72 determines that the sleep state of the sleeper is “slightly shallow”, and the light pattern B has a color temperature of 3500 K and an irradiation time of 5 minutes. The low-color illumination 6a and the high-color illumination 6b are controlled to illuminate the sleeper.
In addition, when the analysis result of the sleeper is level 3, the lighting control unit 72 determines that the sleep state of the sleeper is in the “normal” state, and the light pattern C has a color temperature of 3500 K and an irradiation time of 10 minutes. The light is controlled such that the low color illumination 6a and the high color illumination 6b illuminate the sleeper.
In addition, when the analysis result of the sleeper is level 4, the lighting control unit 72 determines that the sleep state of the sleeper is in the “slightly deep” state, and the light temperature D is 3500K and the irradiation time is 15 minutes. The low-color illumination 6a and the high-color illumination 6b are controlled to illuminate the sleeper.
In addition, when the analysis result of the sleeper is level 5, the lighting control unit 72 determines that the sleep state of the sleeper is in the “deep” state, and the light pattern E has a color temperature of 3500 K and an irradiation time of 20 minutes. The light is controlled such that the low color illumination 6a and the high color illumination 6b illuminate the sleeper.
Thus, the illumination control unit 72 controls the low-color illumination 6 a and the high-color illumination 6 b using the light emission state and the irradiation time corresponding to the biological information read from the storage unit 73. In addition, in this embodiment, although five examples are shown about an analysis result and a light emission condition, five or more may be sufficient as this number, without being limited to five.

As explained above, the light emission of the illumination which shows the color temperature and the irradiation time of the light which low color illumination 6a and high color illumination 6b (illumination) irradiate to a sleeper based on living body information of a sleeper (a person to be measured) It has a lighting control unit 72 (control unit) that controls the situation in order to wake the sleeper from sleep.
In addition, the illumination control device 7 has a storage unit 73 that stores a light emission pattern including a light emission state corresponding to biological information, and the illumination control unit 72 sets the light emission state corresponding to the biological information read from the storage unit 73. The low color illumination 6a and the high color illumination 6b are controlled using.
According to this, the illumination control unit 72 of the illumination control device 7 has the color temperature based on the sleep state ("shallow" to "deep") corresponding to the analysis result (level 1 to level 5) of the biological information. Control to illuminate the sleeper with light of 3500 K (color temperature according to the morning light when the sleeper wakes up) and illumination time (1 to 20 minutes) to wake up the subject from sleep I do. That is, when the sleeper's sleep state is shallow, the time until the 100% lighting state is shortened, and when the sleeper's sleep state is deep, the time until the 100% lighting state is long Do.
As a result, it is possible to provide the lighting control device 7 which wakes up the sleeper comfortably (woke up comfortably).

In addition, the illumination control unit 72 selects a light emission pattern from the relationship between the biological information acquired again and the biological information acquired last time after a predetermined time has elapsed in the irradiation time corresponding to the biological information read from the storage unit 73. , Determine the light emission situation.
That is, in the case of using the analysis results a plurality of times, the illumination control unit 72 that controls the light emission state of the illumination according to the first analysis result passes a predetermined time (referred to as a predetermined time) from the start of the irradiation time shown in FIG. When the second analysis result is obtained, the light emission pattern is selected from the relationship between the second analysis result and the first analysis result, and the light emission state is determined.

For example, when the first analysis result is level 3, control of the illumination is started by the light emission pattern C, but at a stage where the illumination has shifted to a predetermined brightness (for example, 50%), The second emission pattern is determined reflecting the second analysis result.
If the second analysis result is equal to or shallower than the first analysis result, for example, if the second analysis result is level 3 (the second analysis result is the same as the first analysis result) If the second analysis result is level 1 (if the second analysis result is lower than the first analysis result, the sleep level is shallow), The pattern is changed from the light emission pattern C to the light emission pattern A. Specifically, the time for the brightness to shift from 50% to 100% is 5 minutes (10 minutes × 2 = 5 minutes) where the light emission pattern C requires 0.5 minutes (1 minute until the light emission pattern A requires Change to 2 = 0.5 minutes), and the time from 0% to 100% lighting condition, from 10 minutes (5 minutes + 5 minutes = 10 minutes) to 5.5 minutes (5 minutes + 0.5 minutes) Soon to.

On the other hand, if the second analysis result is deeper than the first analysis result, for example, if the second analysis result is level 5 (the second analysis result is deeper than the first analysis result, the sleep level is deeper) When the light emission pattern is maintained as the light emission pattern C, or the time until the light emission pattern is shifted to 100% is changed to a pattern (for example, pattern D) earlier than the pattern E. Specifically, the time until the brightness shifts from 50% to 100% is maintained at 5 minutes (10 minutes divided by 2 = 5 minutes) that the light emission pattern C requires, and the lighting condition from 0% to 100% The time to reach is kept 10 minutes (5 minutes + 5 minutes = 10 minutes). Alternatively, the time taken for the light emission pattern C to shift from 50% to 100% is 5 minutes (10 minutes × 2 = 5 minutes) to 7.5 minutes (15 minutes × 2 = 7) required for the light emission pattern D. Change from .5 minutes) to 10 minutes (5 minutes + 5 minutes = 10 minutes) to 12.5 minutes (5 minutes + 7.5 minutes) from 0% to 100% lighting condition And the speed at which the brightness changes from 0% to 100% is slower than when it is shallow.
Although the biological information is acquired twice and the pattern is determined twice in the first and second times, the biological information may be acquired three or more times and the pattern may be determined three or more times.

FIG. 3 is a flowchart for explaining the illumination control process performed by the illumination control unit 72.
The illumination control unit 72 acquires biological information (step ST1). Specifically, the illumination control unit 72 acquires the analysis results 1 to 5.
Subsequently, the illumination control unit 72 estimates a sleep state (step ST2). Specifically, the lighting control unit 72 estimates the sleep state of the sleeper based on the analysis results 1 to 5.
Next, the illumination control unit 72 determines a light emission pattern (step ST3). In particular,
The illumination control unit 72 reads one light emission pattern among the light emission patterns A to E corresponding to the sleep state of the sleeper stored in the storage unit 73.
Next, the illumination control unit 72 controls the illumination according to the light emission pattern (step ST4). Specifically, in the present embodiment, the illumination control unit 72 performs the low color illumination 6 a and the high color illumination for 1 minute to 30 minutes of light having a color temperature of 3500 K and an irradiation time corresponding to the light emission patterns A to E. 6b controls the sleeper to be irradiated. At this time, if the sleep depth based on the biological information indicates "awakening" and the sleeper wakes up, the illumination control unit 72 may turn off the low color illumination 6a and the high color illumination 6b. .
Subsequently, the illumination control unit 72 determines whether the control time has arrived. Here, the control time corresponds to the predetermined time when the control to set the predetermined time is performed in the above embodiment (when the light emission pattern is switched), and the control to set the predetermined time is set. If not, it corresponds to 100% irradiation time. If the lighting control unit 72 determines that the control time has arrived (step ST5-Yes), the process proceeds to step ST1 to acquire biological information, and it is assumed that the sleeper is not getting up, and the process ST2 and subsequent steps are performed. Advance. Alternatively, when the sleeper wakes up, the low color illumination 6a and the high color illumination 6b may be turned off without proceeding to step ST1. On the other hand, when it is not determined that the control time has arrived (step ST5-No), the illumination control unit 72 waits for the control time to become the predetermined time or 100% irradiation time, and proceeds to step ST5-Yes.

According to this, the illumination control unit 72 determines the light emission pattern from the relationship between the biological information acquired again and the biological information acquired last time after a predetermined time has elapsed in the irradiation time corresponding to the biological information read from the storage unit 73. And select the light emission status. That is, in the case of using the analysis results for a plurality of times, the illumination control unit 72 that controls the light emission state of the illumination according to the first analysis results has passed a predetermined time (predetermined time) from the start of the irradiation time shown in FIG. Occasionally, the second analysis result is obtained, the light emission pattern is selected from the relationship between the second analysis result and the first analysis result, and the light emission state is determined. That is, the light emission pattern is determined by detecting the sleep state of the sleeper a plurality of times.
As a result, the sleep state of the sleeper can be accurately detected, and the lighting control device 7 can be provided to wake up the sleeper more comfortably (woke up comfortably).

  The illumination control device 7 in the embodiment described above may be realized by a computer. In that case, a program for realizing this function may be recorded in a computer readable recording medium, and the program recorded in the recording medium may be read and executed by a computer system. Here, the “computer system” includes an OS and hardware such as peripheral devices. The term "computer-readable recording medium" refers to a storage medium such as a flexible disk, a magneto-optical disk, a ROM, a portable medium such as a ROM or a CD-ROM, or a hard disk built in a computer system. Furthermore, “computer-readable recording medium” dynamically holds a program for a short time, like a communication line in the case of transmitting a program via a network such as the Internet or a communication line such as a telephone line. It may also include one that holds a program for a certain period of time, such as volatile memory in a computer system that becomes a server or client in that case. Further, the program may be for realizing a part of the functions described above, or may be realized in combination with the program already recorded in the computer system. It may be realized using a programmable logic device such as an FPGA (Field Programmable Gate Array).

  The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and includes design and the like within the scope of the present invention.

Reference Signs List 1 illumination system 5 living body information detection device 5a vibration sensor 5b signal processing device 6 lighting device 6a low color illumination 6b high color illumination 6c light emission control unit 7 illumination control device 71 living body information acquisition unit 72 illumination control unit 73 storage unit

Claims (5)

An acquisition unit configured to acquire biological information of the subject obtained from the vibration sensor;
A control unit configured to control a light emission condition of light for awakening the subject from sleep, which is irradiated from the lighting device to the subject based on the acquired biological information;
A lighting control device having A storage unit that stores a light emission pattern representing the light emission state corresponding to the biological information;
The lighting control device according to claim 1, wherein the control unit controls the lighting device according to the light emission pattern corresponding to the acquired biological information. The light emission pattern includes information indicating an irradiation time for irradiating the light,
When the irradiation time corresponding to the acquired biological information has elapsed, the control unit reacquires the biological information, and a light emission pattern corresponding to a relationship between the acquired biological information and the previously acquired biological information is received. The illumination control device according to claim 2, which reads out from the storage unit and controls a light emission state. The light emission pattern includes information indicating the color temperature of the light,
The illumination control device according to any one of claims 1 to 3, wherein the control unit controls the illumination device to emit light according to the color temperature corresponding to the acquired biological information. . A lighting control method in a lighting control device connected to a lighting device, comprising:
An acquisition unit acquires biological information of the person to be measured obtained from the vibration sensor;
The control unit controls the light emission condition of light for awakening the subject from sleep, which is irradiated from the lighting apparatus to the subject based on the acquired biological information.

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