Lighting control system

Abstract

To provide a lighting control system that can appropriately regulate the circadian rhythm of an object to be illuminated by implementing lighting control that takes into account the state of the object to be illuminated.SOLUTION: A semiconductor manufacturing apparatus according the present disclosure includes a data acquisition device, a lighting controller, and a lighting fixture. The data acquisition device is configured to perform a process of acquiring personal information of a user, a process of accumulating and storing information related to detected light, and a process of accumulating and storing the acquired biometric information of the user. The lighting controller is configured to perform a process of acquiring personal information, information related to light, and biometric information, a process of calculating required illumination conditions based on the acquired information, and a process of calculating lighting conditions based on the required illumination conditions. The lighting fixture is configured to perform a process of controlling lighting of a light source on the basis of the lighting conditions.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present disclosure relates to a lighting control system.

Background Art

[0002] It is known that humans reset their circadian rhythm by being exposed to light containing specific wavelengths. There is equivalent melanopic illuminance as an index of brightness that affects the circadian rhythm. In WELL certification, an equivalent melanopic illuminance of 275 or more is recommended as a requirement for adjusting the circadian rhythm.

[0003] For example, Patent Document 1 discloses a technique capable of irradiating light with an equivalent melanopic illuminance that satisfies the requirements of WELL certification by acquiring and analyzing information on the lighting environment.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Non-Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, in the above method, the state of the irradiation target is not considered. For example, although it is known that the influence received from lighting varies depending on a person's age, that influence is not reflected in the requirements of WELL certification. That is, even if the light output is controlled to satisfy the requirements of WELL certification, there is a problem that the effect of adjusting the circadian rhythm cannot be obtained depending on the state of the irradiation target.

[0006] The present disclosure aims to provide a lighting control system that can appropriately adjust the circadian rhythm of an irradiation target by performing lighting control in consideration of the state of the irradiation target in order to solve the above problems.

Means for Solving the Problems

[0007] An aspect of the present disclosure includes a data acquisition device, a lighting control controller, and lighting fixtures. The data acquisition device is configured to perform a process of acquiring personal information of a user, a process of accumulating and storing information related to detected light, and a process of accumulating and storing acquired biological information of the user. The lighting control controller is configured to perform a process of acquiring personal information, information related to light, and biological information, a process of calculating necessary irradiation conditions based on the acquired information, and a process of calculating lighting conditions based on the necessary irradiation conditions. The lighting fixtures are preferably configured to perform a process of controlling the lighting of a light source based on the lighting conditions.

Advantages of the Invention

[0008] According to an aspect of the present disclosure, by performing lighting control in consideration of the state of the irradiation target, the circadian rhythm of the irradiation target can be appropriately adjusted.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Modes for Carrying Out the Invention

[0010] Embodiment 1 FIG. 1 is a diagram showing an illumination control system according to Embodiment 1 of the present disclosure. The illumination control system 100 includes wearable terminals 2a, 2b, and 2c. The wearable terminals 2a, 2b, and 2c are an example of a data acquisition device. A data acquisition device is a device that inputs personal information of a user or acquires biometric information and light-related information of the user by means of a sensor or the like.

[0011] For example, personal information input by users 4a, 4b, and 4c is stored in the wearable terminals 2a, 2b, and 2c. Examples of personal information include age, gender, or a schedule such as wake-up or bedtime. Note that these personal information may include information acquired via a mobile terminal or the like, rather than the wearable terminals 2a, 2b, and 2c.

[0012] In addition, the wearable terminals 2a, 2b, and 2c can detect light-related information by means of a sensor or the like. Examples of light-related information include ambient illuminance or color temperature. Note that the light-related information may be detected via a mobile terminal or the like, rather than the wearable terminals 2a, 2b, and 2c.

[0013] Furthermore, the wearable terminals 2a, 2b, and 2c can acquire biometric information of users 4a, 4b, and 4c by means of a sensor or the like. Examples of biometric information include brain waves or deep body temperature. The biometric information may also include human emotions estimated based on the acquired brain waves as disclosed in Non-Patent Document 1. Examples of such human emotions include "concentration level", "relaxation level", "sleepiness level", and "fatigue level". Note that the biometric information may be detected via other sensors or the like, rather than the wearable terminals 2a, 2b, and 2c.

[0014] In addition, when there is a conflict between the information related to light and the user's biological information, the wearable terminals 2a, 2b, and 2c may adopt only the data that is presumed to be highly effective. For example, consider a case where, despite the detection of low illuminance as the information related to light, the acquired biological information is the same as that obtained in response to high illuminance. In this case, it is presumed that the biological information is more effective, and the information related to light may be ignored. As a result, more reliable lighting control can be implemented.

[0015] The personal information acquired by the wearable terminals 2a, 2b, and 2c is transmitted to the lighting control controller 6. The lighting control controller 6 acquires the personal information and transmits the lighting conditions based on them to the lighting fixtures 8a and 8b.

[0016] The lighting fixtures 8a and 8b control the lighting state of the light source based on the lighting conditions received from the lighting control controller 6. Examples of the control of the lighting state of the light source include changing the illuminance or the color temperature. The change in the color temperature can be made, for example, between 2000K and 20000K.

[0017] FIG. 2 is a flowchart showing the operation of the lighting control system according to Embodiment 1 of the present disclosure. The lighting control system 100 is a system that controls the light irradiated by lighting in order to adjust the circadian rhythm of the user who is the irradiation target. By adjusting the circadian rhythm of the irradiation target, it is possible to encourage the irradiation target to live in accordance with the human circadian rhythm, such as waking up during the day and sleeping at night.

[0018] The outline of the operation of the lighting control system 100 will be described. First, the light with the equivalent melanopic illuminance required by the irradiation target is irradiated for the required time. Subsequently, the state of the irradiation target is confirmed by a sensor or the like, and the obtained data is fed back to the wearable terminal and accumulated. By readjusting the light output based on this accumulated data, the circadian rhythm of the irradiation target is appropriately adjusted.

[0019] The operation details of the lighting control system 100 will be described. First, in step S100, user 4 inputs personal information into the wearable terminal 2. Next, in step S102, the wearable terminal 2 acquires the personal information input by user 4 and stores the acquired personal information in the memory.

[0020] Next, in step S104, the wearable terminal 2 cumulatively stores information about the detected light. The cumulative storage period may be for one day, or several days' worth of data can be stored together. Then, based on this information about the light, the cumulative value of the equivalent melanopic illuminance is calculated.

[0021] Next, in step S106, the wearable terminal 2 cumulatively stores the acquired biological information. The cumulative storage period may be for one day, or several days' worth of data can be stored together.

[0022] Next, in step S108, the lighting control controller 6 acquires the cumulatively stored data. The cumulatively stored data acquired here includes the cumulatively stored data of personal information, information about light, and biological information. When the lighting control controller 6 communicates with a plurality of wearable terminals 2, this cumulatively stored data is acquired for each user associated with each wearable terminal 2.

[0023] Next, in step S110, the lighting control controller 6 calculates the required irradiation conditions based on the cumulatively stored data acquired in step S108. Examples of the required irradiation conditions can include the average value of the required equivalent melanopic illuminance calculated based on personal information.

[0024] The required equivalent melanopic illuminance is calculated based on, for example, the information acquired by the wearable terminal 2. First, the wearable terminal 2 acquires information regarding the light detected from the actually irradiated light and the biological information of the target that has changed according to the light, and transmits it to the lighting control controller 6. The lighting control controller 6 calculates the equivalent melanopic illuminance that is optimal for adjusting the circadian rhythm of the irradiation target based on the transmitted information and the personal information of the irradiation target transmitted in advance. Then, the calculated equivalent melanopic illuminance is used as the required equivalent melanopic illuminance.

[0025] Note that the average value of the required equivalent melanopic illuminance described above indicates the average value of the required equivalent melanopic illuminance calculated for the number of irradiation targets. Since the equivalent melanopic illuminance varies depending on the detection location or the amount of light entering the eyes, etc., variations are likely to occur for each irradiation target. Therefore, especially when there are multiple irradiation targets, adopting the average value makes it easier to adjust the circadian rhythms of the largest number of irradiation targets.

[0026] Also, before calculating the required irradiation conditions, it may be possible to set a classification of groups such as "large number of people", "medium number of people", and "small number of people" for the users who have acquired the cumulative storage data. The classification of the group may be set according to the location where the lighting control system 100 is installed, or may be set according to a preset threshold value and the number of users who have acquired personal information within the lighting control system. When setting according to the number of users, for example, 30 or more people may be defined as "large number of people", 6 or more and less than 30 people as "medium number of people", and less than 6 people as "small number of people". Alternatively, only some users different from the characteristics of the group may be classified as "small number of people", and when the number of the others is 30 or more, it may be classified as "large number of people", and when it is less than 30, it may be classified as "medium number of people".

[0027] The grouping will be described in more detail. When setting "a large number of people", for example, an environment where users of relatively the same age group gather, such as a school, can be assumed. Alternatively, an environment where the overall state of the target has little variation due to a large number of people coming in and out, such as a shopping center, a theater, a cinema, or a stadium, can be assumed. Since such environments are mainly indoors, they are less affected by light from the outside, such as the sun. As a result, since the variation range of the target state is small, it is considered that there is no need to greatly change the required irradiation conditions. Therefore, when setting "a large number of people", for example, the required irradiation conditions suitable for the assumed users can be set in advance. For example, when the assumed users are elementary school students, the required irradiation conditions that can appropriately adjust the circadian rhythm based on the age corresponding to elementary school students can be set in advance.

[0028] When setting "a medium number of people", an environment where the overall state of the target has a large variation when the number of people changes due to people coming in and out can be assumed. Examples of the overall variation of the target state include, for example, the variation of the average age. Therefore, when setting "a medium number of people", the average value of all the required irradiation conditions based on the information obtained from the corresponding users may be used as the new required irradiation conditions. For example, the required equivalent melanopic illuminance is calculated for each user based on the information obtained from the corresponding users. Then, the average value of the calculated required equivalent melanopic illuminance is obtained, and this average value may be used as the required irradiation conditions.

[0029] When setting "a small number of people", it can be assumed that it is not appropriate to use the average value of the group because it is different from the characteristics of other users included in the group. Therefore, when setting "a small number of people", the required irradiation conditions of each user may be used as they are. For example, the required irradiation conditions based on the information obtained from the users associated with a specific lighting fixture may be used for the lighting control of the corresponding lighting fixture.

[0030] Alternatively, for users who have set "small number of people", the required irradiation conditions may be used to correct the required irradiation conditions of other users. For example, the required equivalent melanopic illuminance based on the information obtained from each user who has set "small number of people" may be used to correct the required irradiation conditions for users who have set "large number of people" or "medium number of people".

[0031] Next, in step S112, the lighting control controller 6 calculates the lighting conditions based on the required irradiation conditions calculated in step S110. The lighting conditions are, for example, the illuminance, color temperature, and irradiation time of light. The calculated lighting conditions are transmitted from the lighting control controller 6 to the lighting fixture 8.

[0032] For example, consider the case where the required irradiation condition calculated in step S110 is the equivalent melanopic illuminance. In order to obtain the corresponding equivalent melanopic illuminance, it is necessary to determine the illuminance and color temperature of the light actually irradiated as the lighting conditions. Therefore, for example, based on the data shown in the graph of FIG. 3 described later, the illuminance and color temperature of the light to be irradiated in the corresponding time period are calculated. As the graph of FIG. 3, for example, a graph stored as basic data in the lighting control controller 6 may be used. Alternatively, as the graph of FIG. 3, a graph created from the data obtained when the lighting control is performed in the lighting control system 100 may be used.

[0033] Furthermore, this lighting condition is determined so as to fall within the appropriate range 10 in the circadian rhythm effect distribution as shown in the example of FIG. 4 described later. Thereby, it is possible to prevent the user who is the irradiation target from being made uncomfortable.

[0034] Note that the lighting conditions may be adjusted based on the user's personal information. For example, when the age of the irradiation target is equal to or greater than the threshold value, the illuminance or color temperature of the irradiated light may be adjusted to be higher. It is generally known that the amount of light that a human can perceive decreases with aging. In addition, due to aging or cataracts, etc., the turbidity of the lens of the eyeball progresses, making it difficult to perceive blue light. Therefore, by adjusting the lighting conditions so that the illuminance or color temperature of the irradiated light is higher, the circadian rhythm of the irradiation target can be adjusted more appropriately.

[0035] Next, in step S114, the lighting fixture 8 controls the lighting of the light source based on the lighting conditions calculated in step S112. Then, this lighting condition is fed back to the wearable terminal 2. The fed-back information is added to the information about light that is cumulatively stored in step S104 and the biological information that is cumulatively stored in step S106.

[0036] In this way, the lighting control system of the present disclosure performs lighting control of the lighting fixture based on the personal information, information about light, and biological information obtained by the wearable terminal 2. Thereby, the circadian rhythm of the irradiation target can be adjusted appropriately.

[0037] In addition, in the lighting control system of the present disclosure, by learning the personal information and biological information acquired by the lighting control controller 6 and the calculated lighting conditions, a target value of the equivalent melanopic illuminance can be specifically obtained. That is, when a user with the same personal information as the irradiation target, such as age, becomes the irradiation target next time, lighting control can be implemented using the specifically obtained target value, so that the circadian rhythm of the irradiation target can be adjusted more efficiently.

[0038] Note that the lighting control system 100 can also calculate a specific value of the required equivalent melanopic illuminance by learning the personal information acquired by the lighting control controller 6 and the calculated lighting conditions.

[0039] Figure 3 is a diagram showing the amount of melatonin secreted by humans in each time zone and an example of an environment in which the illuminance and color temperature of lighting are deliberately manipulated. The horizontal axis indicates time.

[0040] The black solid line indicates the illuminance and color temperature of the deliberately manipulated lighting. For example, the light irradiated at 0:00 is "illuminance: dim" and "color temperature: incandescent color", and the light irradiated at 12:00 is "illuminance: bright" and "color temperature: daylight color". Here, the equivalent melanopic illuminance is low for light with "illuminance: dim" and "color temperature: incandescent color", and high for light with "illuminance: bright" and "color temperature: daylight color". That is, the vertical axis in the black solid line can be considered to indicate the equivalent melanopic illuminance.

[0041] Also, the bar graph shows the behavior of the amount of melatonin secreted by humans in each time zone. By increasing the equivalent melanopic illuminance in the time zone with a low amount of melatonin secretion and decreasing the equivalent melanopic illuminance in the time zone with a high amount of melatonin secretion, it is possible to spend time without disturbing the circadian rhythm that humans originally have.

[0042] Also, the shaded area indicates the time zone when the subject human is in a sleeping state. It is known that the amount of melatonin secretion affects whether a human feels sleepy.

[0043] From the graph in Figure 3, it can be seen that by deliberately manipulating the illuminance and color temperature of lighting and increasing the equivalent melanopic illuminance, it is possible to promote human wakefulness. Similarly, it can be seen that by deliberately manipulating the illuminance and color temperature of lighting and decreasing the equivalent melanopic illuminance, it is possible to promote human sleep.

[0044] Figure 4 is a distribution diagram showing the circadian rhythm effect distribution. The horizontal axis is time, and the vertical axis is the equivalent melanopic illuminance (EML).

[0045] The circadian rhythm effect is a change experienced by the user being irradiated, depending on the time of the light being irradiated and the equivalent melanopic illuminance. From the perspective of the user feeling comfortable, the time of the light being irradiated and the equivalent melanopic illuminance are optimal in the region indicated by the appropriate range 10. Based on the appropriate range 10, in a region where the equivalent melanopic illuminance or time is low, the user obtains feelings such as being dark or sleepy. Also, based on the appropriate range 10, in a region where the equivalent melanopic illuminance or time is high, the user obtains feelings such as being bright or stressed.

[0046] As described above, in order to enable the user being irradiated to feel comfortable, it is preferable to determine the equivalent melanopic illuminance and time of the light to be irradiated so that they fall within the appropriate range 10.

[0047] FIG. 5 is a table showing an example of the lighting conditions controlled by the lighting control system according to Embodiment 1 of the present disclosure. The table in FIG. 5 is an example of the lighting conditions calculated in step S112 of FIG. 2. The lighting fixture 8 controls the lighting of the light source, for example, based on this table. Also, for the period from midnight to 5 am not described in the table, the lighting fixture 8 turns on the night light or turns off the light source. Thereby, since lighting control considering the state of the irradiation target can be implemented, the circadian rhythm of the irradiation target can be appropriately adjusted.

[0048] Hereinafter, the aspects of the present disclosure will be summarized as appendices.

[0049] (Appendix 1) A data acquisition device, a lighting control controller, and a lighting fixture are provided. The data acquisition device performs a process of acquiring personal information of the user, a process of cumulatively storing information on the detected light, a process of cumulatively storing the acquired biological information of the user, and is configured to perform the above. The lighting control controller The process of acquiring the personal information, the information related to light, and the biological information, the process of calculating necessary irradiation conditions based on the acquired information, the process of calculating lighting conditions based on the necessary irradiation conditions are configured to be implemented, and the lighting fixture is configured to implement a process of controlling the lighting of the light source based on the lighting conditions. A lighting control system. (Appendix 2) The lighting control controller performs a process of setting a grouping for the user, when the grouping is a large number of people, performs a process of pre-setting necessary irradiation conditions according to the assumed users, when the grouping is a medium number of people, uses the average value of all necessary irradiation conditions based on the information obtained from the corresponding users as the new necessary irradiation conditions and is further configured to be implemented, wherein the medium number of people is set when the number of users is less than that of the large number of people. The lighting control system according to Appendix 1. (Appendix 3) The lighting control controller performs a process of setting a grouping for the user, when the grouping is a small number of people, uses the necessary irradiation conditions based on the information obtained from the users associated with the specific lighting fixture for the lighting control of the lighting fixture and is further configured to be implemented, wherein the small number of people is set when the number of users is less than that of the medium number of people. The lighting control system according to Appendix 2. (Appendix 4) The lighting control controller performs a process of setting a grouping for the user, when the grouping is a small number of people, uses the necessary irradiation conditions based on the information obtained from the corresponding users to correct the necessary irradiation conditions based on the information obtained from other users. configured to further implement wherein the small number is set when the user is less than the medium number The lighting control system according to Appendix 2. (Appendix 5) When there is a conflict between the information about the light and the biological information, only the data presumed to be highly effective is adopted The lighting control system according to any one of Appendices 1 to 4. (Appendix 6) The lighting conditions are adjusted based on the personal information of the user The lighting control system according to any one of Appendices 1 to 5. (Appendix 7) The personal information includes the age of the user, When the age is equal to or greater than the threshold value, increase the illuminance or color temperature of the irradiated light The lighting control system according to claim 6.

Explanation of Signs

[0050] 2 Wearable terminal 2a Wearable terminal 2b Wearable terminal 2c Wearable terminal 6 Lighting control controller 8 Lighting fixture 8a Lighting fixture 8b Lighting fixture 100 Lighting control system

Claims

1. A lighting control system comprising a data acquisition device, a lighting control controller, and lighting fixtures, wherein the data acquisition device is configured to perform: processing for acquiring personal information of a user; processing for cumulatively storing information on detected light; processing for cumulatively storing the acquired biometric information of the user; and the lighting control controller is configured to perform: processing for acquiring the personal information, the information on light, and the biometric information; processing for calculating necessary irradiation conditions based on the acquired information; processing for calculating lighting conditions based on the necessary irradiation conditions; and the lighting fixtures are configured to perform processing for controlling the lighting of a light source based on the lighting conditions. A lighting control system.

2. The lighting control system according to claim 1, wherein the lighting control controller is further configured to perform: processing for setting a grouping for the user; when the grouping is a large number of people, processing for presetting necessary irradiation conditions according to the assumed users; when the grouping is a medium number of people, processing for using, as new necessary irradiation conditions, an average value of all necessary irradiation conditions based on information acquired from the corresponding users; wherein the medium number of people is set when the number of users is less than that of the large number of people. A lighting control system according to claim 1.

3. The lighting control system according to claim 2, wherein the lighting control controller is further configured to perform: processing for setting a grouping for the user; when the grouping is a small number of people, processing for using, for lighting control of the lighting fixture, necessary irradiation conditions based on information acquired from a user associated with the specific lighting fixture; wherein the small number of people is set when the number of users is less than that of the medium number of people. A lighting control system according to claim 2.

4. The lighting control system according to claim 2, wherein the lighting control controller is further configured to perform: processing for setting a grouping for the user; when the grouping is a small number of people, processing for using necessary irradiation conditions based on information acquired from the corresponding users to correct necessary irradiation conditions based on information acquired from other users; wherein the small number of people is set when the number of users is less than that of the medium number of people. A lighting control system according to claim 2.

5. The lighting control system according to claim 1, wherein when there is a conflict between the information on light and the biometric information, only data presumed to be highly effective is adopted.

6. The lighting conditions are adjusted based on the personal information of the user. The lighting control system according to claim 1.

7. wherein the personal information includes the user's age, when the age is equal to or greater than a threshold value, increasing the illuminance or color temperature of the irradiated light The lighting control system according to claim 6.

Images