JPH06223975A - Automatic turning-on/off control device for illuminating lamp - Google Patents

Abstract

PURPOSE:To assure safety for the passing in a corridor, the ascent/descent on a staircase, and the entrance/exit to a room by detecting a human body somewhat in the foreground while a lamp is turned off. CONSTITUTION:An automatic turning-on/off control device of an illuminating lamp is provided with human body detecting sensors 11, 24 detecting a human body entering the foot of a staircase or the head of the staircase respectively, an illuminance detecting sensor 27 detecting the illuminance of the staircase, a selecting circuit 14 setting a staircase lamp 1 to the low- illuminance on-mode and the off-mode, and a throttle shutter 19 changing the detecting range of the human body detecting sensor 11 based on the selection signal SW outputted from the selecting circuit 14. When the illuminance detected by the illuminance detecting sensor 27 is the prescribed illuminance or above, the staircase lamp 1 is set to the off-state. When the illuminance is below the prescribed illuminance, the staircase lamp 1 is set to the low- illuminance on-state or the off-state based on the output of the selecting circuit 14. When the off-mode is selected, the detecting range of the human body detecting sensor 11 is expanded to the maximum detecting range. The human body entering the foot of the staircase while the staircase lamp 1 is turned off is detected by the human body detecting sensor 11 sufficiently in the foreground, and a control circuit 23 turns on the staircase lamp 1 for the prescribed period at high illuminance.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic lighting / extinguishing control device for an illumination lamp for automatically controlling lighting / extinction of an illumination lamp installed in a stairway, a hallway, a room, etc. of a building such as a house.

[0002]

2. Description of the Related Art Conventionally, as an automatic lighting on / off control device for illumination lamps (hereinafter, also simply referred to as a lighting on / off control device), for example,
As described in Japanese Utility Model Laid-Open No. 63-23800, an infrared sensor installed at a doorway of a room detects far infrared rays (body temperature) emitted from the body of a person entering or leaving the room, There is a system that controls lighting / extinction of an illumination lamp installed on a ceiling or the like based on the detection result.

However, in this type of lighting control device, the lighting is turned on when a person enters the room even during the daytime when the illuminance by natural light is sufficient, resulting in a waste of utility costs. It is uneconomical. Therefore,
It is troublesome in the daytime when sufficient illuminance is obtained,
The device must be kept inactive by turning off the power switch of the device. On the other hand, when a person enters the room where the lighting control device is installed, such as at night, when there is almost no illuminance due to natural light, there is low brightness on the route to the room, such as stairs or corridors. It is necessary to install a spare light for. However, the operation of the power switch of this spare light must be done manually. Therefore, the above-described conventional lighting / extinguishing control device cannot sufficiently achieve the original purpose of automatically turning on / off the illumination lamp.

As a means for improving this condition, Japanese Patent Laid-Open No. 3-212058
There is an on / off control device of the system described in Japanese Patent Laid-Open No. 134994. In this device, an illumination lamp is installed on the ceiling or the like, and a human body detection sensor such as an infrared sensor is arranged in both the first and second entrance / exit sections that define an illumination control area in which the illuminance of the illumination lamp is controlled. Along with
An illuminance detection sensor that detects the illuminance is arranged in the illumination control area. Then, when the illuminance of the illumination control area becomes lower than the preset illuminance, the illumination lamp is lit at a low brightness to serve as a spare lamp, and in this state, the first entrance / exit portion or the first entrance / exit portion When a human body is detected at the entry / exit section 2, the illumination lamp is turned on with high brightness for a predetermined time.

[0005]

However, in the lighting / extinguishing control device disclosed in Japanese Patent Laid-Open No. 3-134994, the lighting control is performed even during the nighttime when the person is sleeping or when he / she is out and the spare light is not required. When the illuminance of the area becomes lower than the preset illuminance, the illuminating lamp is turned on with low brightness, which is also uneconomical because of wasteful utility costs.

Therefore, it is conceivable to provide a switch for selecting a low-luminance lighting state or a non-lighting state of the illumination lamp, but if the detection range of the human body detection sensor is fixed, the following inconvenience occurs. . For example, when controlling the stair light provided on the ceiling of the stairs by this lighting control device, if the low brightness lighting state of the lighting is selected with the above switch, the position of the stairs and the surrounding situation at night You can easily recognize it, but if you select the off state, there is almost no illuminance due to natural light, so for example, if you try to climb the stairs when you go home, you can not easily recognize the position of the stairs and the surrounding situation, It is a danger.

Further, in the above-described conventional lighting / extinguishing control device, a pyroelectric far-infrared sensor is used as a human body detection sensor. This type of sensor detects a human body based on the difference between the temperature of the background of the detection range (for example, the floor of the corridor) and the body temperature of a person who has entered the detection range. On the other hand, the background temperature in the detection range changes according to the season and time, but the human body temperature is kept substantially constant throughout the year. Therefore, there is not much illuminance due to natural light, such as immediately after sunset in midsummer, but when the difference between the background temperature in the detection range and the human body temperature is small, the detection sensitivity of the human body detection sensor decreases, and The detection range is narrowed.
That is, the human body cannot be detected unless the human body approaches the human body detection sensor.

Therefore, it is conceivable to provide a temperature compensating element in the circuit that processes the output signal of the human body detection sensor in order to compensate for the rise in the background temperature in the detection range. Since the range of temperature compensation is determined by the curve, a sufficient effect cannot be obtained. Further, when a temperature compensating element having a wide temperature compensating range is used, the influence of noise can no longer be ignored and the reliability performance is deteriorated.

The present invention has been made in view of the above circumstances. It is possible to safely go up and down stairs, pass through a corridor, and enter and exit a room even when the light is off. It is an object of the present invention to provide a highly stable lighting / extinguishing control device that is not affected by changes in background temperature.

[0010]

In order to solve the above problems, a lighting control device according to a first aspect of the present invention is provided with a single or a plurality of entry / exit sections for entering and exiting an illumination control area in which the illuminance of an illumination lamp is controlled. A single or plural human body detecting means for detecting the human body entering the corresponding entrance / exit portion, an illuminance detecting means for detecting the illuminance of the illumination control area, and a low-brightness lighting mode of the illumination lamp, or an extinction mode. Setting means, a detection range changing means for changing the detection range of at least one human body detecting means among the one or more human body detecting means based on the output of the selecting means, and the illuminance detecting means. When the illuminance detected by is equal to or higher than a predetermined illuminance, the illumination lamp is turned off, and when the illuminance is less than the predetermined illuminance, the illumination based on the output of the selecting unit The low intensity lighting conditions, or unlit, in a case where the illuminance is less than the predetermined illuminance,
When a human body that has entered the corresponding entrance / exit section is detected by the one or more human body detecting means, the control means is provided for keeping the illumination lamp in a high-luminance lighting state for a predetermined time.

The lighting / extinguishing device according to a second aspect of the present invention is provided in a single or a plurality of entrances / exits for entering / exiting a lighting control area in which the illuminance of an illuminating lamp is controlled, and a human body entering the corresponding entrance / exit. A single or plural human body detecting means for detecting, an illuminance detecting means for detecting illuminance of the illumination control area, and a background temperature in a detection range of at least one of the single or plural human body detecting means. And a detection range varying means for varying the detection range of the corresponding human body detecting means based on the output of the temperature detecting means, and the illuminance detected by the illuminance detecting means is equal to or higher than a predetermined illuminance. In the case where the illumination lamp is turned off and the illuminance is less than the predetermined illuminance, the illumination lamp is in a low-luminance lighting state, and the illuminance is less than the predetermined illuminance. When the human body that has entered the corresponding entrance / exit portion is detected by the one or more human body detecting means, the human body detecting means is provided with a control means for keeping the illumination lamp in a high-luminance lighting state for a predetermined time. There is.

Further, the lighting / extinguishing control device according to claim 3 is
At least one of the single or plural human body detecting means
The one human body detection means is provided with a transmission means for wirelessly transmitting the output to the control means, and the control means is provided with a reception means capable of wirelessly receiving the output of the transmission means. It is characterized by becoming.

[0013]

In the structure according to the first aspect, when the illuminance of the illumination control area becomes less than the predetermined illuminance due to darkness or the like, the control means turns on the illumination lamp at a low brightness according to the output of the selection means. Or leave it off. Further, the detection range varying means varies the detection range of at least one human body detecting means among the plurality of human body detecting means according to the output of the selecting means. For example, when the extinguishing mode is selected, the detection range of the corresponding human body detecting means is made wider than the detection range when the low-brightness lighting mode is selected. Therefore, when the illumination lamp is turned off, the human body detecting means can detect a human body that is a little far away.
Then, when a human body at a distance is detected, the control means
The illumination lamp is turned on with high brightness for a predetermined time. Therefore, it is possible to safely go up and down stairs, pass through the corridor, and enter and exit the room even when the illumination lamp is turned off. On the other hand, when the low-brightness lighting mode is selected, the detection range of the human body detecting means is narrowed down, so that malfunction or misidentification can be prevented.

In the structure according to the second aspect, when the illuminance of the illumination control area becomes less than the predetermined illuminance due to a dark day or the like, the control means turns on the illumination lamp at a low brightness. Also,
The temperature detection means detects the background temperature in the detection range of the corresponding human body detection means, and the detection range changing means changes the detection range of the corresponding human body detection means according to the output of the temperature detection means. For example, when the background temperature is higher than a certain temperature, the detection range of the corresponding human body detection means is made wider than the detection range when the background temperature is lower than that temperature. By doing so, it is possible to compensate for the deterioration of the detection capability (substantially narrowing of the detection range) due to the temperature rise. Therefore, a substantially stable detection range can be maintained throughout the year, and a highly stable device can be obtained.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. First Embodiment FIG. 1 is a perspective view showing an arrangement state of a lighting / extinguishing control device according to a first embodiment of the present invention, and specifically, shows a staircase around a house in which the lighting / extinguishing control device is arranged. It is an indoor view,
FIG. 2 is a block diagram showing an electrical configuration of the same-point light-off control device. In these figures, a stairway lamp 1 to be controlled in this example is suspended from a ceiling 3 above a staircase 2 via a power supply unit 4. The power supply unit 4 is
100V commercial AC power is supplied to the stairway lamp 1. The turn-on / off control device 5 of this example is installed in order to automatically control the turning on / off of the stairway lamp 1, and basically, the stairway ascending opening 6
The human body detection unit 8 is partially embedded in a wall 7 in the vicinity, and the control unit 10 is partially embedded in the ceiling 3 above the stairway exit 9.

The human body detection unit 8 includes a human body detection sensor 11, an amplification circuit 12, a comparison circuit 13, a selection circuit 14,
It is composed of an electric circuit such as a CPU (Central Processing Unit) 15, a transmission circuit 16 and a drive circuit 17, and optical parts such as a Fresnel lens 18 and a diaphragm shutter 19.

The human body detection sensor 11 is a pyroelectric far-infrared sensor, and a Fresnel lens 18 for focusing far-infrared rays emitted from the human body on the human body detection sensor 11 is provided on the front surface thereof. . This Fresnel lens 18
As shown in FIG. 3, the surface of a plastic plate is divided into several squares, each of which has a function of a small lens, and is an optical element which functions as a thin condenser lens as a whole. .

Further, between the human body detection sensor 11 and the Fresnel lens 18, as shown in FIG. 4, there is provided a diaphragm shutter 19 for varying the detection range of the human body detection sensor 11. Here, a space A indicated by diagonal lines at the lower left corner of FIG. 1 indicates the maximum detection range of the human body detection sensor 11. Then, the human body detection sensor 11 detects far infrared rays emitted from the human body that has entered the detection range through the Fresnel lens 18, and outputs a detection signal m ₁ . The detection signal m ₁ is amplified by the amplification circuit 12 with a predetermined amplification degree and then input to the comparison circuit 13.

The comparator circuit 13 compares the output signal of the amplifier circuit 12 with a preset reference value, and the amplifier circuit 1
When the output signal of 2 is equal to or more than the reference value, the human body detection signal M ₁ of “L” level is sent to the CPU 15.

The selection circuit 14 has a selection switch 14a attached to the wall 7 near the stair climbing opening 6, and the stairway lamp 1 is operated by a person operating the selection switch 14a.
When the low-brightness lighting mode (requiring the spare light) is selected, the selection signal SW is set to the "H" level, and when the extinction mode (requiring the spare light is not selected), the selection signal SW is set to the "L" level. .

Then, the CPU 15 inputs the human body detection signal M ₁ output from the comparison circuit 13 and the selection signal SW output from the selection circuit 14, respectively, and detects the detection range during a preset minute time T. Human body detection data indicating whether or not a person is detected, and selection data indicating whether the low-brightness lighting mode (reserve light is required) or the light-off mode (reserve light is not required) is selected However, the logic drive signal X for driving the transmission circuit 16 is output. As a result, the transmission circuit 16 transmits the radio signal R such as infrared rays or radio waves to the control unit 10 while the logic drive signal X is being supplied.

Further, the CPU 15 determines that the selection signal SW is "
H "level, that is, when the low-brightness lighting mode of the stairway lamp 1 is selected, the detection range of the human body detection sensor 11 is narrowed. That is, of the plurality of beams incident on the Fresnel lens 18, In order to prevent the beam from entering the human body detection sensor 11, a drive signal D of "H" level is sent to the drive circuit 17 to stop the aperture shutter 19
Control to close. On the other hand, when the selection signal SW is at the “L” level, that is, when the extinguishing mode is selected, the detection range of the human body detection sensor 11 is set to the maximum detection range A.
That is, in order to cause all of the plurality of beams that have entered the Fresnel lens 18 to enter the human body detection sensor 11, the drive signal D of “L” level is sent to the drive circuit 17 to open the aperture shutter 19. To control.

Next, the control unit 10 comprises a receiving circuit 20, a human body detection circuit 21, an illuminance detection circuit 22, and a control circuit 23. The receiving circuit 20
When receiving the radio signal R transmitted from the human body detection unit 8, outputs a reception detection signal R _A.

The human body detecting circuit 21 has the same structure and function as the human body detecting sensor 11, the amplifying circuit 12 and the comparing circuit 13 of the human body detecting unit 8, respectively.
4, an amplifier circuit 25 and a comparison circuit 26. That is, the human body detection sensor 24 detects far-infrared rays (body temperature) emitted from the body of a person who has entered the detection range B shown by hatching in the approximate center of FIG. 1, and outputs a detection signal m ₂ . The detection signal m ₂ is amplified by the amplification circuit 25 with a predetermined amplification degree, and then compared with the reference value by the comparison circuit 26. If the output signal of the amplification circuit 25 is equal to or larger than the reference value, the comparison circuit m ₂ is compared. 26 outputs the "L" level human body detection signal M ₂ .

The illuminance detection circuit 22 includes an illuminance sensor 27.
And a comparison circuit 28. Illuminance sensor 2
7 outputs a detection signal Q corresponding to the illuminance of the illumination control area (in this example, the stair space). Comparison circuit 28
Compares the detection signal Q with a reference value corresponding to a preset illuminance, and when the detection signal Q is less than or equal to the reference value, the illumination control area is in a low illuminance state requiring illumination. The determination is made, and the "H" level illuminance detection signal Q ₀ is output.

The control circuit 23 is composed of a microcomputer 29 and a drive circuit 30.
FIG. 5 is a circuit diagram showing an electrical configuration of the control circuit 23. The microcomputer 29 includes a CPU (central processing unit), a program ROM, a RAM in which various data are temporarily stored, and a one-chip IC (integrated circuit) having an I / O interface. The microcomputer 29 respectively receives the reception detection signal R _A output from the reception circuit 20, the human body detection signal M ₂ output from the human body detection circuit 21, and the illuminance detection signal Q ₀ output from the illuminance detection circuit 22. The control signal is input, and the lighting / extinguishing control program stored in the program ROM is executed according to the states of these signals to control the drive circuit 30.

The drive circuit 30 further includes, for example, a triac 31 for phase-controlling a commercial AC voltage of 100 V supplied from the power supply unit 4, a low brightness lighting command S _L output from the microcomputer 29, or a high brightness. A photocoupler 32 that supplies a trigger signal to the gate of the triac 31 based on the lighting command S _H , and a zero-cross detection circuit 33 that detects the voltage zero point passage timing of the commercial AC voltage of 100 V supplied from the power supply unit 4. Has been done.

In the above structure, when the power supply to the lighting control device 5 is turned on, the CP in the microcomputer 29 is turned on.
U first initializes each part of the apparatus. This initialization is performed by the RAM in the microcomputer 29.
The various registers are cleared, various flags are reset, and various variables are initialized as peripheral circuit initialization.

Next, the CPU inputs the illuminance detection signal Q ₀ output from the illuminance detection circuit 22. Illuminance sensor 27
Always outputs the detection signal Q corresponding to the illuminance of the illumination control area (stair space), and the comparison circuit 28 outputs the detection signal Q.
And the standard value are compared. Then, when the illuminance by natural light is sufficient, such as during the daytime, the detection signal Q output from the illuminance sensor 27 becomes equal to or higher than the reference value, and therefore the illuminance detection signal Q ₀ of “L” level is output from the comparison circuit 28. Is output,
It is sent to the microcomputer 29 of the control circuit 23. When the illuminance detection signal Q ₀ is at the “L” level, the CPU determines that the illumination control area is presently sufficient for natural light such as daytime, and the photocoupler 32 is
Neither the low brightness lighting command S _L nor the high brightness lighting command S _H is supplied.
As a result, the photocoupler 32 does not supply the trigger signal to the gate of the triac 31, so that the triac 3
1 does not conduct, and the stairway light 1 is off.

On the other hand, when night or day falls, or even during the daytime when the sun is blocked by shutters, curtains, etc., the detection signal Q output from the illuminance sensor 27 is
Since it becomes less than the reference value, the illuminance detection signal Q ₀ of “H” level is output from the comparison circuit 28 and supplied to the microcomputer 29 of the control circuit 23.

Further, in the human body detection unit 8, since the selection circuit 14 constantly outputs the selection signal SW, the CPU 15 fetches the selection signal SW and selects data for a preset minute time T. And outputs a logical drive signal X for driving the transmission circuit 16 including As a result, the transmission circuit 16 transmits the radio signal R such as infrared rays or radio waves to the control unit 10 while the logic drive signal X is being supplied.

Further, the CPU 15 uses the selection switch 14a.
When the low-brightness lighting mode of the stairway lamp 1 is selected by the human operation, the driving signal D of "H" level is sent to the driving circuit 17 in order to narrow the detection range of the human body detection sensor 11. Then, the aperture shutter 19 is controlled to be closed. On the other hand, when the turn-off mode is selected, in order to set the detection range of the human body detection sensor 11 to the maximum detection range A, the drive signal D of "L" level is supplied to the drive circuit 17, and the aperture shutter 19 is opened. Control to open.

As a result, the receiving circuit 20 of the control unit 10 causes the radio signal R transmitted from the human body detecting unit 8 to be transmitted.
When receiving, the reception detection signal R _A , which changes during the minute time T, is sent to the microcomputer 29 of the control circuit 23. Therefore, the CPU in the microcomputer 29 decodes the reception detection signal R _A and selects the selected data. If the selected data indicates that the low-brightness lighting mode of the stairway lamp 1 has been selected, the zero-cross detection circuit 3
The low-luminance lighting command S _L is supplied to the photocoupler 32 of the drive circuit 30 in synchronization with the output signal of 3. Accordingly, the photocoupler 32 supplies the trigger signal of a predetermined cycle to the gate of the triac 31, so that the triac 31
The ignition is performed at the ignition phase α _L (for example, an electrical angle of 150 °), and the stairway lamp 1 is lit with low brightness. Therefore, the brightness ratio B of the staircase light 1 is, for example, 10% when the high brightness lighting is performed.
When it is set to 0%, it becomes 20%.

On the other hand, the read selection data is the stairway light 1
If it means that the off mode of is selected,
The CPU in the microcomputer 29 does not supply the low-luminance lighting command S _L and the high-luminance lighting command S _{H to the} photocoupler 32. As a result, the photocoupler 32 does not supply the trigger signal to the gate of the triac 31, so that the triac 31 does not conduct and the stairway lamp 1 is off. The low-brightness lighting mode or the extinguishing mode of the stairway lamp 1 described above is held until a person operates the selection switch 14a of the selection circuit 14.

By the way, when the staircase lamp 1 is in a low brightness lighting state (brightness of 20% of the brightness at the time of high brightness lighting), the diaphragm shutter 19 provided between the human body detection sensor 11 and the Fresnel lens 18 is closed. Therefore, it is possible to prevent malfunction and misidentification. At this time, the detection range of the human body detection sensor 11 is narrower than the maximum detection range A shown in FIG.
There is no danger because the position of the stairs 2 and the surrounding situation can be fully recognized.

In such a state, when a person reaches the stairs 2 within a detection range narrower than the maximum detection range A, that is, near the stair climbing opening 6, the output of the amplification circuit 12 of the human body detection unit 8 is reached. Since the signal exceeds the reference value, the comparison circuit 13 outputs the "L" level human body detection signal M ₁ and supplies it to the CPU 15. The CPU 15
When the human body detection signal M ₁ of L "level is supplied, the human body detection data indicating that a person is detected and the selection data indicating that the low-brightness lighting mode is selected for a short time T. Since the logic drive signal X for driving the transmitter circuit 16 including the signal is output, the transmitter circuit 16 outputs the logic drive signal X.
, The radio signal R is transmitted to the control unit 10.

As a result, the receiving circuit 20 of the control unit 10 causes the radio signal R transmitted from the human body detecting unit 8 to be transmitted.
Is received, a reception detection signal R _A that changes during a minute time T is output, and the microcomputer 2 of the control circuit 23
9 to the CP in the microcomputer 29.
The U decodes the reception detection signal R _A , reads the human body detection data and the selection data, and synchronizes with the output signal of the zero-cross detection circuit 33 to output the high-luminance lighting command S _H to the drive circuit 30.
No. 1 to the photocoupler 32, and at the same time, the timer interruption process or the timer not shown starts counting the set time T _A.

As a result, the photocoupler 32 supplies the trigger signal of a predetermined cycle to the gate of the triac 31, so that the triac 31 has the firing phase α _H (for example, electrical angle 30 ° = α _H <α _L ). When the stairway lamp 1 is turned on, the high-luminance lighting is started.

At this time, since the illumination control area (staircase space) is in a high illuminance state, the illuminance sensor 27 outputs the detection signal Q corresponding to the high illuminance. Therefore, the comparison circuit 28
Compares the detection signal Q with a reference value, determines that the illumination control area is in a high illuminance state, and outputs an "L" level illuminance detection signal Q _0. T _A
The illuminance detection signal Q ₀ is ignored until the count value by the timer interrupt processing or a timer (not shown) becomes equal to or more than a predetermined value due to The lighting command S _H is continuously sent to the photocoupler 32 of the drive circuit 30. The set time T _A
Can be set arbitrarily, but in this example, the length is set to be approximately equal to the time for a person to go down or up the stairs 2 at a normal speed.

When the set time T _A elapses and the count value by the timer interrupt process or the timer (not shown) becomes a predetermined value or more, the CPU synchronizes with the output signal of the zero-cross detection circuit 33 and outputs a high signal. Instead of the brightness lighting command S _H , the low brightness lighting command S _L is sent to the photocoupler 32 of the drive circuit 30. As a result, the photocoupler 32 supplies a trigger signal of a predetermined cycle to the gate of the triac 31, so that the triac 31 conducts at the firing phase α _L and lights the stairway lamp 1 with low brightness. Therefore, the brightness ratio B of the staircase light 1 is 20%.

When a person detected by the human body detection sensor 11 is climbing up the stairs 2 and another person arrives in the immediate vicinity of the stair climbing opening 6 to climb the stairs 2, the human body detection is performed. Since the output signal of the amplification circuit 12 of the unit 8 becomes equal to or higher than the reference value again, the comparison circuit 13 outputs the "L" level human body detection signal M ₁ and sends it to the CPU 15. C
When the human body detection signal M ₁ of “L” level is supplied, the PU 15 indicates that the human body detection data indicating that a person is detected and the low-brightness lighting mode are selected during the minute time T. Since the logic drive signal X for driving the transmission circuit 16 including the selection data is output, the transmission circuit 16 transmits the radio signal R to the control unit 10 while the logic drive signal X is being supplied.

Here, the receiving circuit 20 of the control unit 10
When the wireless signal R transmitted from the human body detection unit 8 is received, the reception detection signal R _A that changes for a minute time T
Is output and sent to the microcomputer 29 of the control circuit 23, the CPU in the microcomputer 29
Decodes the reception detection signal R _A , reads the human body detection data and the selection data, resets the timer interruption process or the time measurement by a timer (not shown), and starts the time measurement of the set time T _A again. Therefore, from this time, the staircase light 1 continues to maintain the high-luminance lighting state for the set time T _A.

Further, the human body detection sensor 24 is also always shown in FIG.
Far infrared rays radiated from the body of the person who has entered the detection range B shown by are detected and a detection signal m ₂ is output. The detection signal m ₂ is amplified by the amplification circuit 25 with a predetermined amplification degree, and then compared with the reference value by the comparison circuit 26. When the stairs lamp 1 is in the low-luminance lighting state, when the person reaches the stairs exit 9 to descend the stairs 2, the output signal of the amplifier circuit 25 becomes equal to or higher than the reference value. The "L" level human body detection signal M ₂ is output and supplied to the microcomputer 29 of the control circuit 23.

Therefore, the CPU in the microcomputer 29 turns on the stairway lamp 1 for a high brightness during the set time T _A , in the same manner as when a person reaches the stairs ascending entrance 6 in order to climb the stairs 2. . Further, while the person detected by the human body detection sensor 24 is descending the stairs 2, another person may reach the vicinity of the stair climbing opening 6 to climb the stairs 2 or may descend the stairs 2. Even when the stairs exit 9 is reached, the stairway light 1 is set to the set time T as in the above case.
Only _{A is} turned on with high brightness.

On the other hand, when the staircase light 1 is in the off state (0% of the brightness in the high brightness lighting state), the human body detection sensor 1
Since the diaphragm shutter 19 provided between the lens 1 and the Fresnel lens 18 is opened, the detection range of the human body detection sensor 11 is the maximum detection range A shown in FIG.

In such a state, when a person reaches the maximum detection range A, that is, sufficiently short of the stair climbing opening 6 in order to climb the stairs 2, the output signal of the amplification circuit 12 of the human body detection unit 8 becomes a reference value. As described above, the comparison circuit 13
Outputs "L" level human body detection signal M ₁ from the CPU
15 is sent. The subsequent operation is almost the same as the above-described operation when the stairway lamp 1 is in the low-luminance lighting state, and therefore the description thereof is omitted.

Thus, according to the above configuration, for example,
When the extinguishing mode is selected, the detection range of the human body detection sensor 11 is expanded to the maximum detection range A, so that the human body can be detected sufficiently before the stair climbing opening 6 when the stairway lamp 1 is turned off. . And when the human body is detected,
The control circuit 23 turns on the stairway lamp 1 with high brightness for a predetermined time. Therefore, it is possible to safely go up and down stairs, pass through the corridor, and enter and exit the room even when the illumination lamp is turned off. When the low-brightness lighting mode is selected, the detection range of the human body detection sensor 11 is narrowed down, so that malfunction or misrecognition can be prevented.

Second Embodiment Next, a second embodiment of the present invention will be described. Figure 6
7 is a perspective view showing an arrangement state of a lighting / extinguishing control device according to a second embodiment of the present invention, specifically, an indoor view showing a staircase around a house in which the lighting / extinguishing control device is arranged, and FIG.
FIG. 3 is a block diagram showing an electrical configuration of the same-point light-off control device.

As shown in FIG. 6 and FIG. 7, the point that the lighting / extinguishing control device 32 of this example is greatly different from the lighting / extinguishing control device 5 shown in FIGS. 1 and 2 is provided in the human body detection unit 8. , A selection circuit 14 having a selection switch 14a
The point is that the a and the CPU 15 are eliminated, and instead, the temperature sensor 35 and the timer 36 are added to form the human body detection unit 8a. Therefore, in FIGS. 6 and 7, the portions corresponding to the respective portions of FIGS. 1 and 2 are designated by the same reference numerals, and the description thereof will be omitted.

The temperature sensor 35 detects the background temperature in the detection range A of the human body detection sensor 11 shown in FIG. 6 and outputs a detection signal DT. Then, the drive circuit 17 inputs the detection signal DT output from the temperature sensor 35 and narrows the detection range of the human body detection sensor 11 when the background temperature of the detection range A is lower than a preset set temperature. To do. That is, of the plurality of far-infrared beams that have entered the Fresnel lens 18, a "H" level drive signal D is sent to the drive circuit 17 in order to prevent peripheral beams from entering the human body detection sensor 11. The diaphragm shutter 19 is closed.
On the other hand, when the background temperature of the detection range A is higher than the set temperature, the detection range of the human body detection sensor 11 is set to the maximum detection range A. That is, the aperture shutter 19 is opened so that all the far-infrared beams that reach the Fresnel lens 18 are made incident on the human body detection sensor 11.

The timer 36 outputs from the comparison circuit 13.
"L" level human body detection signal M ₁Is supplied,
Drive the transmission circuit 16 for a preset minute time T
Drive signal X₀Is output. The transmission circuit 16 is a drive signal
X₀While the signal is being supplied, a wireless signal R such as infrared rays or radio waves₀
Is transmitted to the control unit 10. In addition, the control unit 1
The receiving circuit 20 of 0 is transmitted from the human body detection unit 8a.
Radio signal R₀Is received, the reception detection signal R_BOutput
To do.

In the above configuration, when the power supply to the lighting control device 34 is turned on, C in the microcomputer 29 is turned on.
The PU first initializes each part of the device. Next, the CPU inputs the illuminance detection signal Q ₀ output from the illuminance detection circuit 22. The illuminance sensor 27 always outputs the detection signal Q corresponding to the illuminance of the illumination control area (stair space), and the comparison circuit 28 compares the detection signal Q with the reference value. Then, when the illuminance by natural light is sufficient, such as during the daytime, the detection signal Q output from the illuminance sensor 27 becomes equal to or higher than the reference value, so the illuminance detection signal Q ₀ of "L" level is output from the comparison circuit 28. And is sent to the microcomputer 29 of the control circuit 23.

Therefore, the CPU detects the illuminance detection signal Q _0.
However, if it is at the “L” level, it is determined that the illumination control area is sufficiently illuminant by natural light such as daytime, and the photocoupler 32 is instructed to output the low-luminance lighting command S _L and the high-luminance lighting command. S _H also does not supply. Therefore, the photocoupler 32 is
Since the trigger signal is not supplied to the gate of the triac 31, the triac 31 does not conduct and the stairway light 1 is off.

On the other hand, at night or at sunset, the illuminance sensor 2
Since the detection signal Q output from 7 is below the reference value,
An "H" level illuminance detection signal Q ₀ is output from the comparison circuit 28 and sent to the microcomputer 29 of the control circuit 23.

Therefore, the CPU determines the illuminance detection signal Q _0.
However, when it is at the “H” level, it is determined that the illuminance by natural light is not so large in the lighting control area at present, and the low-luminance lighting command S _L is driven in synchronization with the output signal of the zero-cross detection circuit 33. It is sent to the photocoupler 32 of the circuit 30. As a result, the photo coupler 32 becomes the triac 3
Since the trigger signal of a predetermined cycle is supplied to the gate of No. 1, the triac 31 operates in the firing phase α _L (for example, the electrical angle 15
At 0 °), the staircase light 1 is turned on with low brightness. Therefore, the brightness ratio B of the staircase light 1 is 20%, for example, when the brightness ratio during high-luminance lighting is 100%.

By the way, the temperature sensor 35 is constantly set in FIG.
The background temperature of the detection range A of the human body detection sensor 11 shown in is detected, and the detection signal DT is output. Then, the drive circuit 17 inputs the detection signal DT output from the temperature sensor 35, and when the background temperature of the detection range A is lower than the set temperature, in order to narrow the detection range of the human body detection sensor 11. The aperture shutter 19 is closed, and when the background temperature of the detection range A is higher than the set temperature, the aperture shutter 19 is opened in order to set the detection range of the human body detection sensor 11 to the maximum detection range A.

This is for the following reason. The detection range A of the human body detection sensor 11 is normally set diagonally downward, as shown in FIG. Therefore, when a person walks down the corridor to climb the stairs 2, first,
The detection range A of the human body detection sensor 11 is entered. At this time, if there is a sufficient difference between the background temperature of the detection range A and the body temperature of the person, the person can be detected by the foot entering the detection range A of the human body detection sensor 11.

However, the detection range A immediately after sunset in midsummer, etc.
When the background temperature is high, the difference between the background temperature of the detection range A and the body temperature of the person who has entered the detection range A is small, and the level of the detection signal m ₁ output from the human body detection sensor 11 is low. Even if the detection signal m ₁ is amplified by the amplification circuit 12, it does not exceed the reference value.
The level human body detection signal M ₁ is not output. Next, when the person further proceeds to reach the stairs ascending entrance 6 and the thighs and knees of the person enter the detection range A, the level of the detection signal m ₁ output from the human body detection sensor 11 becomes high. Therefore, when the detection signal m ₁ is amplified by the amplification circuit 12, it becomes equal to or higher than the reference value, and the comparison circuit 13 outputs the human body detection signal M ₁ of "L" level. That is, the human body detection sensor 11 detects the person based on the body temperature of the person's thighs and knees. Generally, the body temperature of a person, in other words, the radiant energy of far infrared rays is highest in the upper body and the head, then in the thighs and knees, and the lowest in the feet. Therefore, the higher the background temperature of the detection range A, the narrower the actual detection range of the human body detection sensor 11.

Therefore, as described above, by opening and closing the aperture shutter 19 according to the background temperature of the detection range A, the substantial detection range of the human body detection sensor 11 does not depend on the background temperature of the detection range A. It is kept constant. That is, when there is a sufficient difference between the background temperature of the detection range A and the body temperature of the person, when the detection range for detecting the person by the body temperature of the person's feet and the background temperature of the detection range A are high, the person The body temperature of the thighs and knees is set to be the same as the detection range for detecting the person.

When the background temperature of the detection range A is lower than the set temperature, the drive circuit 17 inputs the detection signal DT output from the temperature sensor 35 to narrow the detection range of the human body detection sensor 11. The diaphragm shutter 19 is closed. In such a state, when a person reaches the stairs 2 within a detection range narrower than the maximum detection range A, that is, near the stair climbing opening 6, the human body detection unit 8a
Since the output signal of the amplifier circuit 12 is equal to or more than the reference value, the comparison circuit 13 outputs the human body detection signal M ₁ of “L” level and supplies it to the timer 36. This allows the timer 36
Inputs the human body detection signal M ₁ of “L” level and outputs the drive signal X ₀ for driving the transmission circuit 16 during the minute time T. Therefore, the transmission circuit 16 is supplied with the drive signal X _0. During that time, the radio signal R ₀ is transmitted to the control unit 10.

As a result, when the receiving circuit 20 of the control unit 10 receives the radio signal R ₀ transmitted from the human body detecting unit 8a, it outputs the receiving detection signal R _B which changes during the minute time T, and the control circuit 23. Since it is sent to the microcomputer 29 of the
The PU issues the high-luminance lighting command S _H in synchronization with the output signal of the zero-cross detection circuit 33 to the photocoupler 32 of the drive circuit 30.
In addition to the above, the timer interruption process or the timer (not shown) starts measuring the set time T _A. Therefore,
Since the photocoupler 32 supplies the trigger signal of a predetermined cycle to the gate of the triac 31,
Is the firing phase α _H (for example, electrical angle 30 ° = α _H <α _L ).
And the high-luminance lighting of the stairway lamp 1 is started.

At this time, since the illumination control area (staircase space) is in a high illuminance state, the illuminance sensor 27 outputs the detection signal Q corresponding to the high illuminance. Therefore, the comparison circuit 28
Compares the detection signal Q with a reference value, determines that the illumination control area is in a high illuminance state, and outputs an "L" level illuminance detection signal Q _0. T _A
The illuminance detection signal Q ₀ is ignored until the count value by the timer interrupt processing or a timer (not shown) becomes equal to or more than a predetermined value due to The lighting command S _H is continuously sent to the photocoupler 32 of the drive circuit 30.

When the set time T _A elapses and the count value by the timer interrupt process or the timer (not shown) becomes a predetermined value or more, the CPU synchronizes with the output signal of the zero-cross detection circuit 33 and outputs a high signal. Instead of the brightness lighting command S _H , the low brightness lighting command S _L is sent to the photocoupler 32 of the drive circuit 30. As a result, the photocoupler 32 supplies a trigger signal of a predetermined cycle to the gate of the triac 31, so that the triac 31 conducts at the firing phase α _L and lights the stairway lamp 1 with low brightness. Therefore, the brightness ratio B of the staircase light 1 is 20%.

When the person detected by the human body detection sensor 11 is climbing the stairs 2 and another person reaches the immediate vicinity of the stair climbing opening 6 to climb the stairs 2, the human body detection is performed. Since the output signal of the amplifier circuit 12 of the unit 8a becomes equal to or higher than the reference value again, the "L" level human body detection signal M ₁ is output from the comparison circuit 13 and supplied to the timer 36.
As a result, the timer 36 inputs the human body detection signal M ₁ of “L” level and outputs the drive signal X ₀ for driving the transmission circuit 16 for the set time T. The radio signal R ₀ is transmitted to the control unit 10 while X ₀ is supplied. As a result, when the receiving circuit 20 of the control unit 10 receives the radio signal R ₀ transmitted from the human body detecting unit 8 a, it outputs the receiving detection signal R _B that changes during the minute time T, and the micro-circuit of the control circuit 23. Since the data is sent to the computer 29, the CPU in the microcomputer 29 resets the timer interrupt processing or the time measurement by a timer (not shown) and restarts the time measurement of the set time T _A. Therefore, the stairway lamp 1 has a set time T
Continues to maintain the high brightness lighting state for _A only.

Further, the human body detection sensor 24 is also always shown in FIG.
Far infrared rays radiated from the body of the person who has entered the detection range B shown by are detected and a detection signal m ₂ is output. The detection signal m ₂ is amplified by the amplification circuit 25 with a predetermined amplification degree, and then compared with the reference value by the comparison circuit 26. When the person reaches the stairway exit 9 to get off the stairs 2, the output signal of the amplifier circuit 25 becomes equal to or higher than the reference value, so that the comparison circuit 26 outputs the human body detection signal M ₂ of "L" level. , To the microcomputer 29 of the control circuit 23.

Therefore, the CPU in the microcomputer 29 keeps the stairway light 1 at high brightness for the set time T _A , as in the case where the person reaches the stairs ascending entrance 6 in order to ascend the stairs 2 as described above. Turn on the light. Further, while the person detected by the human body detection sensor 24 is descending the stairs 2, another person may reach the vicinity of the stair climbing opening 6 to climb the stairs 2 or descend the stairs 2. Even when the stairway exit 9 is reached, the staircase light 1 is further turned on with high brightness for the set time T _A , as in the case described above.

On the other hand, when the background temperature of the detection range A is higher than the set temperature, the drive circuit 17 causes the human body detection sensor 11
Since the aperture shutter 19 provided between the Fresnel lens 18 and the Fresnel lens 18 is opened, the detection range of the human body detection sensor 11 is the maximum detection range A shown in FIG. In such a state, in order for the person to climb the stairs 2, the maximum detection range A,
That is, when the signal reaches the front of the stair climbing opening 6 sufficiently, the output signal of the amplification circuit 12 of the human body detection unit 8a becomes the reference value or more, and therefore the comparison circuit 13 outputs the human body detection signal M ₁ of "L" level. , Timer 36. The operation thereafter is almost the same as the above-described case where the background temperature of the detection range A is lower than the set temperature, and therefore the description thereof is omitted. According to the above configuration, the substantial detection range can be kept constant throughout the year, and a highly stable device can be obtained.

Although the embodiment of the present invention has been described in detail above with reference to the drawings, the specific structure is not limited to this embodiment, and the design change and the like without departing from the gist of the present invention. Even this is included in this invention. For example, in the above-described embodiment, the case where the lighting control devices 5 and 34 according to the present invention are installed on the stairs of the house has been described. However, the same effect as described above can be obtained.

Further, in the above-mentioned embodiment, the case where the entrance / exit sections for partitioning the illumination control area are provided at the stair climbing opening 6 and the stair descending opening 9 has been described, but the invention is not limited to this. Not done. Further, in the above-described embodiment, the human body detection units 8 and 8a to the control unit 10 are connected.
Although the case of transmitting data using the wireless signals R and R ₀ has been described above, the data may be transmitted by wire.

In addition, in the above-described embodiment, the human body detection sensors 11 and 21 are provided near the stairs ascending opening 6 and the stairs descending opening 9, respectively.
The case where the staircase light 1 is lit for a predetermined time after the human body is detected by 24 has been described, but the invention is not limited to this.
For example, a human body detection sensor whose detection range is the illumination control region may be provided on the ceiling 3 or the like, and the stairway lamp 1 may be turned on with high brightness while the human body detection sensor detects a human body. In this way, it can be applied to a conference room, a reception room, etc.

In the above embodiment, the case where the aperture shutter 19 and the Fresnel lens 18 are provided only on the front surface of the human body detection sensor 11 has been described, but instead of or in addition to this, the human body detection sensor 24 is provided. Of the human body detection sensor 24 depending on whether it is desired to turn on the illumination lamp at a low brightness or to turn it off, or according to the background temperature of the detection range. The detection range may be changed automatically.

Further, in the above-mentioned first embodiment, the diaphragm shutter 19 is driven by the drive signal D supplied from the CPU 15.
Although the case where the drive circuit 17 is opened and closed based on the above is described, the present invention is not limited to this, and the drive circuit 17 may be opened and closed based on the selection signal SW output from the selection circuit 14. In addition, in the above-described embodiment, the case where the diaphragm shutter 19 is used to make the detection range of the human body detection sensor 11 variable is described, but the present invention is not limited to this, and the human body detection sensor 11 and the Fresnel lens are not limited thereto. The 18 itself may be mechanically moved.

Further, in the above-described second embodiment, the case where only one set temperature is set has been described, but the present invention is not limited to this, and a plurality of set temperatures are set and the detection range of the human body detection sensor 11 is set. May be variable in multiple steps. Further, in the above-described second embodiment, the case where the aperture shutter 19 is opened and closed according to the detection signal DT output from the temperature sensor 35 has been described, but the present invention is not limited to this, and the aperture shutter 19 itself may be used. It may be made of a shape memory alloy and opened and closed depending on the background temperature of the detection range. Furthermore, the configuration of the first embodiment and the configuration of the second embodiment described above may be combined. That is, for example, the selection circuit 14 is added to the configuration of the second embodiment so that the detection range is not narrowed too much when the extinguishing mode is selected even when the background temperature of the detection range is low.

[0074]

As described above, according to the lighting / extinguishing control device of the present invention, the detection range of at least one human body detecting means among the plurality of human body detecting means is variable according to the output of the selecting means. Become. Therefore, when the extinguishing mode is selected, the detection range of the corresponding human body detecting means is set to be wider than the detection range when the low-brightness lighting mode is selected. When the light is off, the human body detecting means can detect a human body that is a little far away. When a human body a little far away is detected, the control means turns on the illumination lamp for a predetermined period of time with high brightness. Therefore, it is possible to safely go up and down stairs, pass through the corridor, and enter and exit the room even when the illumination lamp is turned off. On the other hand, when the low-brightness lighting mode is selected, the detection range of the human body detecting means is narrowed down, so that malfunction or misidentification can be prevented.

Further, even if the detection capability is deteriorated due to the rise of the background temperature in the detection range of the human body detection sensor (therefore, the substantial detection range is narrowed), the detection range changing means physically detects the detection range. Since the range is expanded and compensated, the substantial detection range can be kept substantially constant. Therefore, stable control can be performed throughout the year.

[Brief description of drawings]

FIG. 1 is a view showing an arrangement state of a lighting / extinguishing control device according to a first embodiment of the present invention, specifically, an indoor view showing a staircase around a house in which the lighting / extinguishing control device is arranged.

FIG. 2 is a block diagram showing an electrical configuration of the same-point light-off control device.

FIG. 3 is a perspective view showing a configuration of a Fresnel lens applied to a human body detection unit of the same-point light-off control device.

FIG. 4 is a side view showing an optical configuration of the human body detection sensor.

FIG. 5 is a circuit diagram showing an electrical configuration of a control circuit that constitutes the same-point-off control device.

FIG. 6 is a diagram showing an arrangement state of a lighting / extinguishing control device according to a second embodiment of the present invention, specifically, an indoor view showing a staircase around a house in which the lighting / extinguishing control device is arranged.

FIG. 7 is a block diagram showing an electrical configuration of the same-point light-off control device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 stair light 11,24 human body detection sensor (human body detection means) 19 diaphragm shutter (detection range changing means) 14 selection circuit (selection means) 23 control circuit (control means) 27 illuminance detection sensor (illuminance detection means) 35 temperature detection sensor (Temperature detection means)

Claims (3)

[Claims] 1. A single or plural human body detecting means provided in a single or plural entrance / exit sections for entering / exiting a lighting control area in which the illuminance of an illuminating lamp is controlled, and for detecting a human body entering the corresponding entrance / exit section. An illuminance detection unit that detects the illuminance of the illumination control region; a selection unit that sets the illumination lamp to a low-brightness lighting mode or an extinction mode; and based on the output of the selection unit, the one or more human body detections. Among the means, a detection range changing means for changing the detection range of at least one human body detecting means, and when the illuminance detected by the illuminance detecting means is equal to or higher than a predetermined illuminance, the illumination lamp is turned off, When the illuminance is less than the predetermined illuminance, the illumination lamp is brought into a low brightness lighting state or a non-lighting state based on the output of the selecting means, and the illuminance is less than the predetermined illuminance. When the human body that has entered the corresponding entrance / exit portion is detected by the one or more human body detection means, the control means for keeping the illumination lamp in the high-luminance lighting state for a predetermined time is provided. An automatic lighting on / off control device for an illumination lamp. 2. A single or a plurality of human body detection means provided in a single or a plurality of entrances / exits for entering and exiting a lighting control area in which the illuminance of an illuminating lamp is controlled, and for detecting a human body entering the corresponding entrances / exits. At least one of an illuminance detection unit that detects the illuminance of the illumination control region, and one or more human body detection units
Temperature detecting means for detecting the background temperature in the detection range of one human body detecting means, detection range changing means for changing the detecting range of the corresponding human body detecting means based on the output of the temperature detecting means, and the illuminance detecting means. When the illuminance detected by the illuminance is equal to or higher than a predetermined illuminance, the illumination lamp is turned off, and when the illuminance is less than the predetermined illumination, the illumination lamp is in a low-luminance lighting state, and the illuminance is the When the human body that has entered the corresponding entrance / exit portion is detected by the one or more human body detecting means when the illuminance is less than a predetermined illuminance, a control means that puts the illumination lamp in a high-luminance lighting state for a predetermined time, and An automatic lighting on / off control device for an illuminating lamp, comprising: 3. A transmission means for wirelessly transmitting the output to the control means is added to at least one human body detection means of the one or more human body detection means, and the control means is provided with the transmission means. The automatic lighting on / off control device for an illuminating lamp according to claim 1 or 2, further comprising a receiving means that can wirelessly receive the output of the transmitting means.