JPH07312293A - Lighting control system - Google Patents

Abstract

(57) [Summary] [Purpose] To finely change the lighting state of the lighting load according to the positional relationship between the lighting load and people, and to facilitate wiring work and eliminate the need for address setting. A human body detection sensor 1 has a plurality of detection elements 5 having different fields of view. The field of view of each detection element 5 corresponds to a plurality of sections within the detection area of the human body detection sensor 1. The control unit 6 changes the light output of the lighting load 2 according to which detection element 5 detects a person.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting control system for turning on / off a lighting load depending on the presence or absence of a person.

[0002]

2. Description of the Related Art Conventionally, various types of lighting control systems have been proposed which detect the presence or absence of a person with a human body detection sensor and turn on a lighting load when the presence of the person is detected. . That is, as the simplest configuration, as shown in FIG. 10, when a person is present in the detection area E of the human body detection sensor 1, the lighting load 2 corresponding to the human body detection sensor 1 in one-to-one correspondence is turned on. There is. In this configuration, if there is a person in the detection area E, the lighting load 2 is turned on, and if there is no person, the lighting load 2 is turned off. There is a problem that it is not possible to deal with the purpose of securing the light enough to see your feet while reducing the illuminance when you are away from each other to save power.

Further, as shown in FIG. 11, it is considered to control a plurality of lighting loads 2 by one human body detection sensor 1, but the human body detection sensor 1 has the same configuration as in FIG.
Lighting load 2 is turned on according to the presence or absence of a person in detection area E of
Since it is simply turned off, the same problem as in the configuration of FIG. 10 occurs. On the other hand, as shown in FIG. 12, a configuration is conceivable in which the human body detection sensor 1 and the lighting load 2 are each a slave unit and are connected to the master unit 3 via a signal line 4 for multiplex transmission. . In this configuration, an address is individually set for the human body detection sensor 1 and the lighting load 2, and information on the presence or absence of a person in each human body detection sensor 2 is individually identified by using the address, and each lighting load 2 It is possible to individually give instructions to turn on and off. Therefore, if the relationship of which lighting load 2 is to be turned on when the presence or absence of a person is detected by which human body detection sensor 1 is registered in the base unit 3 in advance, the lighting to be turned on according to the location of the person The load 2 can be selected, and the illuminance can be adjusted according to the location of a person.

[0004]

However, as shown in FIG.
In the configuration shown in FIG. 2, the human body detection sensor 1 and the lighting load 2 are
In addition to the above, since there is a need to add the base unit 3, there is a problem that the number of constituent elements of the system increases, the equipment scale increases, and the investment cost is large. Further, each human body detection sensor 1 and each lighting load 2 have an individual problem. Since it is necessary to set the address to, there is also a problem that it takes a lot of trouble to set the address. Furthermore, it is necessary to route the signal line 4 that connects the human body detection sensor 1 and the lighting load 2 to the base unit 3,
There is a problem that the wiring construction becomes troublesome.

An object of the present invention is to solve the above-mentioned problems, and it is possible to finely change the lighting state of the lighting load in accordance with the positional relationship between the lighting load and a person, but on a small scale and for wiring work. It is intended to provide a lighting control system that is easy to use and does not require address setting.

[0006]

In order to achieve the above object, the invention of claim 1 is a human body detection sensor for detecting the presence or absence of a person within a prescribed detection area, and a person detected by the human body detection sensor. The human body detection sensor is divided into a plurality of sections, and the control section determines the lighting load according to the section in which a person exists in the detection area. It is characterized by changing the lighting state.

According to a second aspect of the invention, in the first aspect of the invention, the control unit increases the light output of the illumination load as the section in which a person is present is closer to the illumination load. According to the invention of claim 3, in the invention of claim 2, a plurality of lighting units including a human body detection sensor, a lighting load, and a control unit are arranged, and for each section of the human body detection sensor provided in each lighting unit. It is characterized in that the positional relationship of the lighting units is set so that any of the sections of the human body detection sensor provided in the lighting units arranged in the vicinity overlap.

According to a fourth aspect of the present invention, in the third aspect of the present invention, the detection area of the human body detection sensor of each lighting unit is divided into the first section, the second section and the third section from the closer distance from the lighting load. The lighting unit is divided into three stages, and the adjacent lighting units overlap each other with the first partition and the second partition, and the second partition and the third partition overlap with each other. When the person in the section is detected, the light output of the lighting load is set to 100%, when the person in the second section is detected, the light output is set to 75%, and when the person in the third section is detected, the light output is set to 50%. The feature is that the lighting load is turned off if there is no person.

[0009]

According to the structure of the invention of claim 1, the detection area of the human body detection sensor is divided into a plurality of sections, and the lighting state of the lighting load is changed in accordance with the section in which a person is present. The lighting state of the lighting load can be changed according to the positional relationship between the lighting load and the person. Further, in this configuration, since each section in the detection area of the human body detection sensor is simply associated with the lighting state of the lighting load, a base unit is separately provided or an address is set for the human body detection sensor or the lighting load. It is not necessary to do this, and only the power line for power supply needs to be connected as in a general lighting load.

According to the configuration of the second aspect of the present invention, the light output of the lighting load is increased in a section closer to the lighting load among the sections of the human body detection sensor, so that the section becomes brighter when a person is near the lighting load. The illuminance can be gradually reduced when a person moves away from the lighting load. For example, it becomes possible to obtain sufficient illuminance in a place near the lighting load, and to reduce the illuminance when away from the lighting load to save power while ensuring brightness enough to see your feet. Of.

According to a third aspect of the present invention, a plurality of lighting units including a human body detection sensor, a lighting load, and a control unit are arranged, and a plurality of lighting loads are arranged in a lighting space like an office. It corresponds to the case. When a plurality of lighting units are used in this way, one of the sections of the human body detection sensor provided in the lighting unit arranged in the vicinity should be overlapped with each section of the human body detection sensor provided in each lighting unit. By setting the positional relationship of the lighting unit, the place where a person is present is illuminated by multiple lighting loads, so that the place where a person is present is brightest, and the illuminance decreases as the distance from the person decreases. It becomes possible to obtain the distribution. In other words, it is not an unnatural lighting where only the place where a person is present is bright and the illuminance suddenly decreases around the person, but by gradually reducing the illuminance as you move away from the person, all the lighting loads are turned on while removing discomfort. Compared with the case, it is possible to significantly save power.

According to a fourth aspect of the present invention, which is a preferred embodiment of the third aspect of the invention, the detection area of each human body detection sensor is divided into three stages, and the first zone is closest to the illumination load. The light output of the lighting load is 100%, the light output of the second section next is 75%, the light output of the third section farthest is 50%, and the adjacent lighting units have the first output and the second output. While overlapping the section,
The second section and the third section are overlapped, and by such arrangement and setting of the light output, the place where a person exists is brightest, and the illuminance is gradually reduced as the distance from the person increases. Can be obtained.

[0013]

EXAMPLES In the examples shown below, as shown in FIG.
As the human body detection sensor 1, one having a plurality of detection elements 5 such as a pyroelectric element is used, and the visual field of each detection element 5 is appropriately set to detect the detection area E (see FIG. 2) of the human body detection sensor 1. It is divided into a plurality of sections D _{1 to} D _n (see FIG. 2). Further, the human body detection sensor 1 controls the lighting state of the lighting load 2 via the control unit 6. Here, in the following examples, the light output is changed as the lighting state of the lighting load 2, but when the lighting load 2 capable of changing the light color is used, the light color is changed as the lighting state. You may do it. A setting unit 7 is connected to the control unit 6 in order to perform a setting operation such as a correspondence relationship between each detection element 5 of the human body detection sensor 1 and a lighting state of the lighting load 2. The human body detection sensor 1, the lighting load 2, the control unit 6, and the setting unit 7 are assembled into a single instrument main body so that the lighting unit 10 (see FIG.
See)).

(Embodiment 1) In this embodiment, as shown in FIG. 2, the visual field F _{1 of} each detection element 5 provided in the human body detection sensor 1 is as follows.
An example is shown in which ~ F ₃ are set so as not to overlap with each other and to be in close contact with each other. That is, the visual fields F _{1 to} F ₃ of the detection elements 5 correspond to the sections D _{1 to} D _n in the detection area E of the human body detection sensor 1, respectively. Further, the human body detection sensor 1 and the lighting load 2 are arranged on the ceiling, and the lighting load 2
The sections D _{1 to} D _n are set in a plurality of stages according to the distance from immediately below. Here, the human body detection sensor 1 and the illuminating load 2 are arranged so that the directions directly below are the same. The sections D _{1 to} D _n shown in FIG. 2 are set symmetrically with the direction directly below the human body detection sensor 1 as the center of symmetry.
The sections D _{1 to} D _n and the detection elements 5 are made to correspond one to one.

The setting unit 7 controls the control unit 6 for each sensing element 5
The light output of the lighting load 2 is set in association with
In this embodiment, when a person is present in the section D ₁ directly below the lighting load 2, the light output of the lighting load 2 becomes maximum, and this section D 1
The light output of the illumination load 2 is set to be smaller as the sections D _{2 to} D _n are farther from ₁ . For example, it is assumed that the sections D _{1 to} D ₃ are set in three stages as shown in FIG. 3, and the three detection elements 5 used in this configuration are the detection elements corresponding to the sections D _{1 to} D ₃ , respectively. Expressed as 5 _{1 to} 5 _3, as shown in Table 1, when the detection element 5 ₁ detects the presence of a person in the section D ₁ , the lighting load 2 is turned on with a light output of 100%, and in the section D ₂ , 75 The light load is set to 50% in the section D ₃ , and the light load is set to 50% in the section D ₃ so that the illumination load 2 is turned off if no person is present in the detection area E.

[0016]

[Table 1]

Therefore, as shown in FIG. 4, the control unit 6 detects whether there is a change in the input of the human body detection sensor 1 (passage of a person) (S1), and which detection element 5 the visual field of the person is Depending on whether it exists (S2), the lighting load 2 is dimmed so that the light output according to the setting in the setting unit 7 is obtained (S2).
3). Further, in step S2, when no person is detected by any of the detection elements 5, the lighting load 2 is turned off (S).
4). By the above control, the section D in which a person exists
It is possible to adjust the light output of the lamp load 2 in accordance with ₁ to D _n. The setting of “dimming control according to the setting” in steps S3 and S4 in FIG. 4 indicates the setting in Table 1 here.

(Embodiment 2) In Embodiment 1, the case where the lighting unit 10 is used alone has been described, but in this embodiment, as shown in FIG. 5, an example in which a plurality of lighting units 10 are arranged on the ceiling is used. Indicates. Each of the lighting units 10 is divided into three stages D according to the distance from the position directly below the lighting load 2.
It is assumed that _{1 to} D ₃ (Fig. 3) are set. Also,
It is assumed that the sections D _{1 to} D ₃ and the light output of the illumination load 2 have the correspondence relationship shown in Table 1. Now, with respect to the left and right illumination units 10 in FIG. 5, sections D _{1 to} D ₃ and fields of view F ₁ to
To distinguish F _3, in addition to the subscripts A for the left lighting unit 10, the right lighting unit 10 adds B to the subscript. That is, the left lighting unit 1
0 indicates the section and the field of view by D _{1A to} D _3A and F _{1A to} F _3A , and the illumination unit 10 on the right side indicates the section and the field of view by D _1B.
.About.D _3B , F _{1B to} F _3B . In addition, each lighting unit 10
The first compartment D _1A directly under, referred to as D _1B, the first compartment D _1A, D
Second section D _2A , D in order as the distance from _1B increases
_2B and 3rd division _D3A , _D3B . In this embodiment, the sections D _{1A to} D _3A , D _{1B to} D _3B and the fields of view F _{1A to} F _3A ,
There is a one-to-one correspondence with F _{1B to} F _3B .

In this embodiment, with respect to the adjacent lighting units 10, the first section D _1A , D _1B and the second section D _2A , D of each other.
Part of _2B overlaps with the second section D _2A , D _2B
And the fields of view F _{1A to} F _3A and F _{1B to} F _3B of the respective detection elements 5 are set so as to overlap a part of the third sections D _3A and D _3B . That is, although only two lighting units 10 are shown in FIG. 5, when there are three or more lighting units 10, the first section and the third section of the lighting units 10 on both sides of one lighting unit 10 are shown. Will be duplicated. Here, in the arrangement direction of the illumination units 10, the projection dimensions of the sections D _{1 to} D _{3 on} the floor are set to be substantially equal.

By adopting the above arrangement, for example, as shown in FIG. 5, the left lighting unit 1 is provided.
If there is a person P just under 0, the left lighting unit 10 detects a person in the first section D _1A , and the right lighting unit 10 detects a person in the second section D _2B . The lighting load 2 of the lighting unit 10 is lit at 100% light output, and the lighting load 2 of the lighting unit 10 on the right side is lit at 75%. If another lighting unit 10 is arranged on the right side of the right lighting unit 10, the lighting load 2 of the lighting unit 10 is turned on at 50%. In this way, the area near the person P is bright, and the illuminance gradually decreases as the distance from the person P increases. That is, even though the lighting units 10 are not connected to each other, the person P
It is possible to obtain an illuminance distribution in which the illuminance is reduced toward the periphery around the center. Other configurations and operations are similar to those of the first embodiment.

(Third Embodiment) In the first embodiment, the field of view F _{1 to} F _n of the plurality of detecting elements 5 constituting the human body detecting sensor 1 independently corresponds to the sections D _{1 to} D _n. ,
In the present embodiment, as shown in FIG. 6, an example in which an inclusion relation is set in the fields of view F _{1 to} F _n of each detection element 5 is shown. That is, the innermost section D ₁ is included in the visual fields F _{1 to} F _n of all the sensing elements 5, and the outermost section D ₁ is included.
_n is formed only by the field of view F _n of one sensing element 5. By setting the fields of view F _{1 to} F _n of the detection elements 5 in this way, it is possible to determine in which section D _{1 to} D _n a person is present by a simple logical operation. For example,
If there is a person compartment D _3, 2 pieces of sensing element 5, who only compartment D _1, D ₂ of the inner and field F _1, F ₂ is not detected than compartment D _3, remaining all Since the detection element 5 detects a person, if the presence or absence of detection of a person in each detection element 5 is associated with a logical value, the person is detected by an exclusive OR of the logical values of the adjacent detection elements 5. Section D ₁ ~ D
You can easily know _n .

FIG. 7 shows a state in which three stages of sections D _{1 to} D ₃ are set, and each field of view F _{1 to} F ₃ used in this configuration.
Assuming that the _three sensing elements 5 having the above are respectively denoted by 5 _{1 to} 5 ₃ , as shown in Table 2, the respective sensing elements 5 _{1 to} 5 ₃ and the light output of the illumination load 2 can be associated with each other. For example, when a person is detected by the _two detection elements 5 ₂ and 5 ₃ , it is determined that a person is present in the section D ₂ , and the lighting load 2 is set to 7
It is turned on with a light output of 5%.

[0023]

[Table 2]

The above operation is summarized as shown in FIG.
That is, if there is a change in the input to the human body detection sensor 1 (passage of a person) (S1), the control unit 6 obtains the changed detection element 5 (S2, S3). Next, the calculated combination of the detection elements 5 is calculated (S4), and the light output of the lighting load 2 is adjusted according to the combination (S4).
5). If it is determined in step S2 that there is no input to any of the sensing elements 5, the lighting load 2 is controlled to be turned off (S5). The setting of “dimming control according to the setting” in step S5 in FIG. 8 indicates the contents of Table 2.

The present embodiment is the same as the first embodiment except for the visual field setting of the detection element 5 of the human body detection sensor 1 and the determination processing in the control section 6 associated with the visual field setting. (Embodiment 4) In this embodiment, a plurality of lighting units 10 having the structure of Embodiment 3 are arranged as shown in FIG. That is, the human body detection sensor 1 having three detection elements 5 is used in each lighting unit 10, and the visual field of each detection element 5 is F _{1A to} F _{3A in} the right lighting unit 10 and F in the left lighting unit 10. _{1B to} F _3B , each of the sections D _{1A to} D _3A and D _{1B to} D _3B is
As described in the third embodiment, the fields of view F _{1A to} F _3A and F _{1B to} F _3B are defined by the inclusive relationship, and the sections D _{1A to} D _3A ,
If the positional relationships of the fields of view F _{1A to} F _3A and F _{1B to} F _3B are set so that D _{1B to} D _3B have the same relationship as that of the second embodiment, the same function as that of the second embodiment is achieved.

[0026]

According to the first aspect of the present invention, since the detection area of the human body detection sensor is divided into a plurality of sections and the lighting state of the lighting load is changed according to the section in which a person is present, The lighting state of the lighting load can be changed according to the positional relationship between the load and the person, and each section in the detection area of the human body detection sensor is simply associated with the lighting state of the lighting load. Therefore, it is not necessary to separately provide a base unit or set an address for the human body detection sensor or lighting load, and just connect the power line for power supply like a general lighting load, depending on where the person is. Therefore, there is an advantage that the lighting state of the lighting load can be finely changed.

According to the second aspect of the present invention, the light output of the lighting load is increased in a section closer to the lighting load among the sections of the human body detection sensor. It is possible to gradually reduce the illuminance when is away from, for example, to obtain sufficient illuminance in a place near the lighting load, and reduce the illuminance when away from the lighting load to reduce power consumption while still seeing the feet. There is an advantage that control such as ensuring the brightness of can be performed.

According to a third aspect of the present invention, a plurality of lighting units including a human body detection sensor, a lighting load, and a control unit are arranged, and each lighting unit is provided with a proximity to each section of the human body detection sensor. Since the positional relationship of the lighting units is set so that any of the sections of the human body detection sensor provided in the lighting unit arranged in the same area overlap, the place where the person exists is illuminated by a plurality of lighting loads, There is an advantage in that it is possible to obtain an illuminance distribution in which the existing location is made brightest and the illuminance is gradually reduced as the distance from the person increases. In other words, it is not an unnatural lighting where only the place where a person is present is bright and the illuminance suddenly decreases around the person, but by gradually reducing the illuminance as you move away from the person, all the lighting loads are turned on while removing discomfort. Compared with the case, there is an advantage that power can be significantly saved.

According to a fourth aspect of the present invention, the detection area of each human body detection sensor is divided into three stages, and the light output of the lighting load is 100% in the first partition closest to the lighting load, and the second is the second closest. The light output is 75% in the section, the light output is 50% in the farthest third section, and the adjacent first lighting unit overlaps the first section and the second section with each other, and the second section and the third section. Therefore, by arranging such arrangement and setting of light output, it is possible to obtain the illuminance distribution in which the place where a person is present is brightest and the illuminance is gradually reduced as the distance from the person is increased. is there.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a conceptual explanatory diagram of the first embodiment.

FIG. 3 is a conceptual explanatory diagram in the case where three detection elements are used in Example 1.

FIG. 4 is a flowchart showing the operation of the first embodiment.

FIG. 5 is a conceptual explanatory diagram of the second embodiment.

FIG. 6 is a conceptual explanatory diagram of the third embodiment.

FIG. 7 is a conceptual explanatory diagram in the case where three detecting elements are used in Example 3;

FIG. 8 is a flowchart showing the operation of the third embodiment.

FIG. 9 is a conceptual explanatory diagram of the fourth embodiment.

FIG. 10 is a schematic configuration diagram showing a conventional example.

FIG. 11 is a schematic configuration diagram showing another conventional example.

FIG. 12 is a schematic configuration diagram showing still another embodiment.

[Explanation of symbols]

1 Human Body Detection Sensor 2 Lighting Load 5 Detection Element 6 Control Section 7 Setting Section 10 Lighting Unit D _{1 to} D ₃ Section D _{1A to} D _3A Section D _{1B to} D _3B Section F _{1 to} F ₃ Field of View F _{1A to} F _3A Field of View F _{1B to} F _3B field of view E detection area

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Michiko Iwai 1048, Kadoma, Kadoma, Osaka Prefecture Matsushita Electric Works Co., Ltd.

Claims (4)

[Claims] 1. A human body detection sensor for detecting the presence or absence of a person within a prescribed detection area, and a control unit for determining the lighting state of a lighting load according to the presence or absence of the person detected by the human body detection sensor. The illumination control system is characterized in that the detection area of the detection sensor is divided into a plurality of sections, and the control unit changes the lighting state of the illumination load according to the section in which a person is present. 2. The lighting control system according to claim 1, wherein the control unit increases the light output of the lighting load as the section in which a person is present is closer to the lighting load. 3. A plurality of lighting units each including a human body detection sensor, a lighting load, and a control unit are arranged, and the lighting units are provided in a lighting unit disposed near each section of the human body detection sensor provided in each lighting unit. The lighting control system according to claim 2, wherein the positional relationship of the lighting units is set so that any of the sections of the human body detection sensor overlap. 4. The detection area of the human body detection sensor of each lighting unit is divided into three stages of a first section, a second section, and a third section from the side closer to the lighting load, and adjacent lighting units. The first section and the second section of each other overlap each other, and the second section and the third section overlap each other. When the control unit of each lighting unit detects a person in the first section, the light output of the lighting load is output. Is 100%, the light output is 75% when the person in the second section is detected, and 50% when the person in the third section is detected, and the lighting load is turned off if there is no person in the detection area. The lighting control system according to claim 3, wherein: