JP3203619B2 - Zone control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a zone control device for controlling the turning on and off of a lighting device and the operation of an air conditioner in an office or the like for each preset area.

[0002]

2. Description of the Related Art Even in an office where a large number of clerks (hereinafter referred to as "targets") work during the day, the number of targets working after a fixed time or on an office holiday becomes extremely small. . However, usually, all of the lighting fixtures in the office are turned on, and all of the air-conditioning equipment are often in operation. Also, when the subject moves to another floor or goes out for a meal or the like, the lighting equipment and the air-conditioning equipment are often kept in the lighting and driving state, which wastes much energy.

[0003] To eliminate the waste of such energy, by detecting infrared rays generated from the human body, the control apparatus adapted to turn off the point of illumination has been proposed. This control device is configured such that an infrared sensor is arranged on the ceiling, the infrared sensor detects infrared light emitted from the human body, turns on the luminaire, and is turned off after a certain period of time after the infrared light emitted from the human body is no longer detected. ing.

Accordingly, when controlling the turning on and off of the illumination in a relatively narrow space such as a reception room or a conference room partitioned by a partition, the control can be performed accurately.

[0005]

In order to turn on / off the lighting of a large office room without partitions or to control an air conditioner, it is necessary to arrange a plurality of infrared sensors. When a plurality of infrared sensors are arranged so that the detection areas of the infrared sensors overlap, the plurality of infrared sensors may detect one subject at the same time. In addition, if a plurality of infrared sensors are arranged so that the detection areas of the infrared sensors do not overlap each other, a state occurs in which even if there is a target person, none of the sensors detects the target person.

For this reason, unnecessary lighting equipment is turned on,
Operate air conditioning equipment, turn off necessary lighting equipment,
The operation of air conditioning equipment may be stopped. Thou,
If the detection area of the infrared sensor is large, turning on and off the lighting equipment and controlling the operation of the air conditioning equipment corresponding to the area will cause unnecessary lighting of the lighting equipment and operation of the air conditioning equipment, resulting in energy savings. Unnecessarily occurs.

In view of the above circumstances, it is an object of the present invention to provide a zone control capable of accurately controlling the turning on / off of a lighting fixture and the operation of an air conditioner, and detecting a fire occurrence or intrusion of a suspicious person. It is to provide a device.

[0008]

In order to achieve the above object, according to the present invention, there are provided a plurality of zones set in a room, a plurality of lighting equipment groups for lighting each zone, and A pair of detection means for detecting the target person, a third detection means for confirming the detection result of the pair of detection means, and a current position of the target person based on the output of the pair of detection means. And a control device provided with a calculating means for calculating a zone corresponding to (i), wherein the control device individually controls turning on / off of the lighting fixture group corresponding to the zone calculated by the calculating means.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 5 show an embodiment of the present invention. FIG. 1 is a side view showing a detection state of a subject in the present invention, and FIG. 2 is a plan view showing a zone specifying method in the present invention. FIG. 3 is a side view of the detecting means in FIG.
FIG. 4 is a block diagram showing a control system in the present invention, and FIG. 5 is a program flowchart in the control circuit.

1 and 2, reference numeral 1 denotes a room to be controlled, which is surrounded by a floor 2, walls 3 and a ceiling 4. This room 1 has six zones Aa, Ab, Ac, Ba, Bb, B
c is set. The shape and size of each of the zones Aa to Bc can be set arbitrarily. 5a, 5
Reference numerals b and 5c denote detection means which are attached to the corners of the ceiling of the room 1 at predetermined intervals.

In FIG. 3, reference numeral 6 denotes a step motor, which is fixed to the ceiling 4. Reference numeral 7 denotes a bracket which is fixed to a rotation shaft of the step motor 6. Reference numeral 8 denotes a step motor, which is fixed to the bracket 7 so that its axis 8a is orthogonal to the axis 6a of the step motor 6. Reference numeral 9 denotes a bracket which is fixed to a rotation shaft of the step motor 8. 10 is an infrared camera, the center of the light receiving element is
Each axis 6 of the step motor 6 and the step motor 8
It is fixed to the bracket 9 so as to coincide with the intersection of a and 8a.

Therefore, the infrared camera 10 turns around the axis 6a when the step motor 6 operates, and turns around the axis 8a when the step motor 8 operates. At this time, the center of the light receiving element of the infrared camera 10 is at a fixed position, that is, at the intersection of the axis of the step motor 6 and the axis of the step motor 8.

In FIG. 4, reference numeral 12 denotes a control device, which is a rotary encoder 6b attached to each stepping motor 6 of each of the detecting means 5a, 5b, 5c, and a signal from the infrared camera 10 for each of the zones. The switches 13 to 18 corresponding to Aa to Bc are controlled to open and close. For example, a signal is applied to the control device 12 to notify the operating state of a security system (not shown) that monitors the release of the system and the opening and closing of the door.

With such a configuration, a zone control method will be described based on a program flowchart shown in FIG.

In response to a command from the control device 12, the detecting means 5
a, 5b each step motor 6 and step motor 8
Is operated to change the field of view of the infrared camera 10 to each zone Aa to
Bc is sequentially moved to search for an infrared source (step S1).

When an infrared ray source enters the field of view of the infrared camera 10, the luminance of the infrared ray is detected, and it is determined whether or not it exceeds a predetermined reference value (step S2). If the luminance of the infrared ray exceeds a predetermined reference value, it is determined that a fire has occurred, a fire alarm is transmitted, and a notification is sent to a manager or a fire department (step S3).

If the luminance of the infrared ray is lower than the predetermined reference, it is determined whether or not the security system is operating (step S4). If the security system is activated, the detected infrared radiation source is determined to have been illegally intruded, and a trespasser alarm is issued, and the administrator, security company, police station Etc. (Step S
5). If there is no problem such as a fire or a trespasser, the infrared source is recognized as the authorized subject 20.

The control device 12 operates the stepping motors 6 and 8 to turn the infrared camera 10 so that the image of the subject 20 enters a predetermined area in the center of the light receiving element (step S6). When the image of the subject 20 is located in a predetermined area at the center of the light receiving element, the rotation angles α1, α2 of the infrared camera 10 are obtained from the output of the rotary encoder 6b attached to the step motor of each of the detection means 5a, 5b. Is read (step S7).

The infrared camera 10 of each detecting means 5a, 5b
Irrespective of the vertical turning angles β and γ of the detectors 5a and 5b, the angles α1 and α2 with respect to the X axis in the plane 2a passing through the axis of each of the detection means 5a and 5b when the subject 20 is detected. (Step S8), and straight lines 21a and 21b extending from the center of
The intersection of 21b is determined (step S9). Then, by obtaining the XY coordinates (x, y) of the intersection o of the straight lines 21a and 21b, the zone where the subject 20 is considered to be present (FIG. 2)
, The zone Bc) is calculated (step S1).
0).

The control device 12 operates the stepping motors 6 and 8 of the third detecting means 5c in order to confirm whether or not the subject 20c detected by each of the detecting means 5a and 5b actually exists. The infrared camera 10 of 5c is pointed at the calculated zone Bc (step S11).

The detecting means 5c directed to the zone Bc
If the target person 20c can be detected by the infrared camera 10 of
It can be confirmed that the target person 20c detected by the detection means 5a, 5b actually exists. On the other hand, the zone Bc
If the target person 20c cannot be detected, the target person 20c detected by the detection means 5a, 5b does not exist (is a virtual image) (step S12).

When the target person 20c is a virtual image, one detecting means 5b (5a) is moved toward the target person 20a (20b) detected by the other detecting means 5a (5b) (step S13). Then, steps S6 to S12 are repeated.

If the detected subjects 20a and 20b are real images, the zones Ab and Bb are specified as zones where the subjects exist (step S14). Then, the control device 12 turns on the switches 14 and 17 corresponding to the zones Ab and Bb specified as the actual subjects 20a and 20b, and turns on the lighting devices of the zones Ab and Bb.
Activate the air conditioning equipment. In addition, other zones Aa, A
The lighting equipment corresponding to c, Ba, and Bc is turned off, and the air-conditioning equipment is stopped. (Step S15).

Until the control is released, the operations from step S1 to step S15 are repeated (step S16), so that the target person 20 can determine which zone Aa to
Even when moving to Bc, it is possible to detect the zone where the target person 20 is located and the zone where the target person 20 is not located and control the lighting and air conditioning.

In the case where there are a plurality of subjects, the zones where the subjects are located may be sequentially specified in the order detected by the infrared camera 10, and the lighting equipment and the air conditioning equipment may be controlled.

The zone is set by setting the center position of the zone and the length of a pair of diagonal lines passing through the center position, aligning the center position of the zone with the detected position 20 of the subject 20, and setting each diagonal line. A region formed by connecting the tips of the above may be a control target zone. In this way, even if the position where the target person 20 is located and the detection position are slightly shifted, a zone centered on the target person 20 can be set, and accurate zone control can be performed.

[0028]

As described above, according to the present invention, a plurality of zones set in a room, a plurality of luminaires for lighting each zone, and a plurality of luminaires arranged in the room at predetermined intervals, A pair of detecting means for detecting the target person, a third detecting means for confirming a detection result by the pair of detecting means,
A control device including a calculation unit that calculates a zone corresponding to the current position of the subject based on outputs of the pair of detection units; and a lighting device corresponding to the zone calculated by the calculation unit by the control device. Since the turning on and off of the group is individually controlled, the lighting and air conditioning can be limited to the minimum necessary zone, and unnecessary energy can be eliminated. In addition, it is possible to find out a fire or an illegal intruder and notify them.

[Brief description of the drawings]

FIG. 1 is a side view showing a detection state of a subject in the present invention.

FIG. 2 is a plan view showing a zone identification method according to the present invention.

FIG. 3 is a side view of the detection means in FIG. 1;

FIG. 4 is a block diagram showing a control system.

FIG. 5 is a program flowchart in the control device.

[Explanation of symbols]

1 ... room to be controlled 2 ... floor 3 ... wall 4 ... ceiling 5
a, 5b, 5c: detecting means, Aa, Ab, Ac, Ba,
Bb, Bc zone, 6 step motor, 6a axis, 8 step motor, 8a axis, 10 infrared camera,

Continuation of the front page (56) References JP-A-64-33887 (JP, A) JP-A-7-312293 (JP, A) JP-A-6-317344 (JP, A) JP-A-63-99449 (JP) JP-A-5-203218 (JP, A) JP-A-7-263151 (JP, A) JP-A-7-296970 (JP, A) JP-A-9-129377 (JP, A) 9-283283 (JP, A) JP-A-10-9654 (JP, A) JP-A-11-40378 (JP, A) JP-A-8-7188 (JP, A) JP-A-61-27034 (JP, A) U) Shokai 63-199392 (JP, U) Shokai 62-144098 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) H05B 37/02 F24F 11/02

Claims (1)

(57) [Claims] 1. A plurality of zones set in a room, a plurality of luminaires for lighting each zone, and a pair of luminaires arranged at predetermined intervals in the room to detect a subject. Detecting means and confirming detection results by the pair of detecting means
A control unit including a third detection unit and a calculation unit that calculates a zone corresponding to the current position of the subject based on the outputs of the pair of detection units, wherein the control unit calculates the zone corresponding to the current position of the subject. A zone control device for individually controlling the turning on and off of a group of lighting fixtures corresponding to a set zone.