JPH11214167A - Lighting system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting system capable of reducing the number of signals of the same kind on a transmission wire. SOLUTION: In a lighting system in which a plurality of luminaries 1 are connected with a transmission wire 2, the luminaire 1 receiving a human body detection signal performs counting of its transmission mask timer 1f when the signal is received from an luminaire 1 and does not transmit the human body detection signal when the luminaire 1 detects a human body during counting by the transmission mask timer 1f.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting device in which a plurality of lighting devices are connected to the same transmission line.

[0002]

2. Description of the Related Art Hitherto, there has been known an illuminating device in which a lighting sensor is turned on and off using a human sensor. In such a lighting device, a low-cost pyroelectric element is used as a human sensor in many cases. The pyroelectric element detects the movement of a human body based on a change in infrared rays emitted from the human body, but has a problem that it cannot detect the movement of the human body when the human body is stationary.

[0003] Therefore, when there is a person and the person is still, it may be determined that there is no person and the lighting fixture may be turned off. Even if it is judged, the lighting equipment is not turned off immediately, but remains on for a certain period of time (lighting hold time) while waiting, and if a person is detected again during that time, the lighter is again turned on for the lighting hold time and waits Method.

As shown in FIG. 6, a human body detection signal of a human sensor using a pyroelectric element generally occurs irregularly and irregularly, and the human sensor and a lamp load control unit are integrated. In the case of lighting fixtures that were connected (directly connected), the above-described method was sufficient.

However, when the human sensor and the lamp load control unit are separately provided, the human body detection signal from the human sensor is converted into another signal and transmitted to the lamp load control unit. In that case, in order to solve the above-mentioned problem, some method is required for the signal transmission method.

The above means is disclosed in Japanese Patent Application No. 8-224733.
In this lighting device, a human body detection signal that occurs continuously and irregularly is converted into a remote control signal as it is and transmitted, so that the number of remote control signals increases, and the transmission unit of the remote control transmitter is increased. Because the burden is large and the power consumption is large, if the human body is detected during the interval as short as possible and shorter than the lighting holding time of the lamp load,
The human body detection signal converted into the remote control signal is transmitted to the control unit of the lamp load, and the lamp load is turned off when the remote control signal is not received during the lighting holding time.

By using this method, the number of remote control signals to be transmitted can be reduced, and power consumption can be reduced, so that the load on the transmitter of the remote control transmitter is reduced. Applicable only in case of 1. That is, considering that there are five human sensors, 1
Although the number of signals per unit is small, five times as many signals of the same type fly back and forth, and the load on the receiving unit of the lighting equipment also increases.

In general, a plurality of signals cannot be output at the same time, and if the signals are output at the same time, they will interfere with each other and be broken. For this reason, means that do not output simultaneously are generally used,
In this case, a new signal cannot be output while another signal is being output, which causes a waiting time. This waiting time is determined by the number of signals passing on the same medium and output (planned)
If the number of signals is large, the waiting time will inevitably increase, and if the number of signals is large, the signal may not be output immediately even if you want to output it. In such cases, it cannot be dealt with.

[0009]

In the above-mentioned conventional illuminating device, there is a problem that only the same kind of signals which are individually output increases, and the transmission efficiency of urgent signals and the like is reduced. there were.

[0010] Further, when the medium for transmitting a signal is saturated, there is a problem that a new signal cannot be output.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and an object of the present invention is to provide a lighting device capable of reducing the number of signals of the same type on a transmission line.

[0012]

According to the first aspect of the present invention,
A plurality of lighting fixtures each having a lamp load and a control unit for controlling the lamp load are connected to the transmission line, and control the lamp load based on a control signal from another lighting fixture or a control signal of the own lighting fixture. In a lighting apparatus, a control signal from another lighting apparatus is prioritized over a control signal of the same kind of the own lighting apparatus.

According to a second aspect of the present invention, in the lighting device according to the first aspect, a human sensor is provided in the lighting fixture, and the control signal is an output from the human sensor. It is.

According to a third aspect of the present invention, in the lighting device according to the first aspect, an illuminance sensor is provided in the luminaire, and the control signal is an output from the illuminance sensor. .

According to a fourth aspect of the present invention, in the lighting device according to the first aspect, the control signal is a signal from a remote controller.

According to a fifth aspect of the present invention, in the lighting device according to any one of the first to fourth aspects, the lighting device of the own device is provided for a first predetermined time after receiving the control signal from the other lighting device. Of the same type of control signal.

According to a sixth aspect of the present invention, in the lighting device according to any one of the first to fifth aspects, when the own control signal is generated within a second predetermined time from the transmission of the own control signal. The self-control signal is transmitted in response to the completion of the timing of the second predetermined time.

According to a seventh aspect of the present invention, in the lighting device according to the fifth or sixth aspect, the control signal is not received from another lighting apparatus within the first predetermined time, and the first signal is not received. When a control signal of the same type is generated within a predetermined time, the control signal of the same type is transmitted along with the completion of the time measurement of the first predetermined time. is there.

According to an eighth aspect of the present invention, in the lighting device according to the sixth or seventh aspect, the first predetermined time is set to be longer than the second predetermined time. Things.

According to a ninth aspect of the present invention, in the lighting device according to any one of the fifth to eighth aspects, the timing of the first predetermined time is triggered by receiving a control signal from another lighting apparatus. And resetting and starting.

According to a tenth aspect of the present invention, in the illuminating device according to any one of the fifth to ninth aspects, the first device is provided.
The predetermined time is reset and started a predetermined number of times with the generation of the control signal of the own lighting device as a trigger.

[0022] According to an eleventh aspect of the present invention, in the lighting device according to any one of the first to tenth aspects, there is provided a lighting device which has been generated within a third predetermined time after receiving a control signal from another lighting fixture. And the same type of control signal of the lighting device is not processed.

According to a twelfth aspect of the present invention, in the lighting device according to the eleventh aspect, the third predetermined time is determined by receiving a control signal from another lighting fixture, and determining the time of the first predetermined time. The time until the number of times of resetting is set.

According to a thirteenth aspect of the present invention, in the lighting device according to any one of the sixth to twelfth aspects, the control signal of the own lighting fixture is transmitted from another lighting fixture within the second predetermined time. When the same type of control signal is received, the second predetermined time is reset, and processing is performed based on a control signal from the other lighting fixture.

[0025]

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

Embodiment 1 = FIG. 1 is a block diagram showing an embodiment of a lighting apparatus 1 of a lighting apparatus according to the present invention, and FIG. 2 shows an operation of the lighting apparatus according to the present embodiment. It is a time chart to explain.
In the lighting device according to the present embodiment, the plurality of lighting fixtures 1 are one.
It is connected to a pair of transmission lines 2. The lighting fixture 1 includes a communication unit 1a, a human sensor 1b, a lamp load 1c, a control unit 1d, and a timer unit 1e. Here, the communication unit 1a receives a signal transmitted via the transmission line 2 or transmits a signal to another lighting apparatus 1 via the transmission line 2, and the human sensor 1b detects a human body. Then, a human body detection signal is output to the control unit 1d, and the control unit 1d
Is a human body detection signal from the human sensor 1b or the communication unit 1
The timer unit 1e controls the lamp load 1c by the signal from the control unit 1a and outputs information from the human sensor 1b to the communication unit 1a. The timer unit 1e detects the human body by the human sensor 1b for a certain period of time. The transmission mask timer 1f counts a predetermined time (first predetermined time) when a human body detection signal is received via the transmission line 2. The time of the transmission mask timer 1f is set to a value shorter than the lighting holding time of the timer unit 1e and as close as possible to the lighting holding time.

The operation of this embodiment will now be described with reference to FIG.
It will be described based on. In addition, for convenience of explanation, the lighting fixture 1
Will be described using lighting fixtures A and B. First, when the human sensor 1b of the lighting fixture A detects a human body, the lighting fixture A transmits a human body detection signal to another lighting fixture B via the transmission line 2 and turns on its own lamp load 1c. Then, counting of the lighting holding time by the timer unit 1e is started.

When the lighting fixture B receives the human body detection signal via the transmission line 2, it turns on the lamp load 1c, counts the lighting holding time by its own timer unit 1e, and counts its own transmission mask timer 1f. (Eg 1
5 seconds).

Each time a human body detection signal is received from another lighting fixture A, the counters of its own timer section 1e and transmission mask timer 1f are reset, and counting is started again. At this time, the lighting fixture A also resets the counter of its own timer unit 1e and starts counting again.

Here, the luminaire B transmits its human body detection signal to another illuminator via the transmission line 2 when its own human sensor 1b detects a human body while counting its own transmission mask timer 1f. Do not transmit to appliance A. Thereby, transmission of the same type of signal can be prevented.

Next, when the lighting apparatus B detects a human body while its lighting masking time is being counted and its own transmission mask timer 1f is not counting, the lighting apparatus B outputs a human body detection signal. Is transmitted to another lighting fixture A via the transmission line 2, and the counter of the timer unit 1e is reset and counting is performed again.

If no new human body detection signal is received or no human body is detected by the own human sensor 1b during the counting of the lighting holding time, the lamp load 1c is turned off when the counting of the lighting holding time is completed.

Therefore, in this embodiment, there is no waste in transmitting the same type of signal, and the number of signals on the transmission line 2 is reduced, so that a space for transmitting other signals can be secured.

The lighting fixture 1 that has transmitted the human body detection signal
By resetting the timer unit 1e of itself and the counter of the timer unit 1e of the other lighting fixture 1 by the human body detection by, the time synchronization with the other lighting fixture 1 can be established.

Embodiment 2 = FIG. 3 is a time chart for explaining the operation of a lighting apparatus according to another embodiment of the present invention. Note that the block diagram of the lighting fixture 1 according to the present embodiment is the same as the block diagram of the lighting fixture 1 shown in FIG.
Here, the description is omitted.

The operation of the present embodiment is performed only once when the luminaire B detects the human body while its own human sensor 1b detects the human body during the counting of its own transmission mask timer 1f in the first embodiment. The counter of its own transmission mask timer 1f is reset, and the counting is performed again. When the human body detection signal is not received from the lighting fixture A during the counting again and the human body is detected in the lighting fixture B, In this configuration, the lighting fixture B transmits a human body detection signal when the count of the transmission mask timer 1f ends. That is,
While the transmission mask timer 1f of the lighting fixture B is being counted by receiving the human body detection signal from the lighting fixture A, when the lighting fixture B detects a human body, the transmission mask timer 1 is set only once.
The counter of f is reset and counting is performed again, and this is performed each time a human body detection signal is received from the lighting fixture A. Other operations are the same as in the first embodiment.

In this case, if the counter from the reception of the human body detection signal to the end of the count of the transmission mask timer 1f exceeds the lighting holding time by resetting the counter of the transmission mask timer 1f, the predetermined value is set. If a human body detection signal is output when the human body sensor 1b of the lighting fixture B detects the human body from the timing of, the human body detection signal is output even though the human body is detected by the human body sensor 1b. It is possible to prevent the lamp load 1c from being turned off without being turned off.

Further, in the present embodiment, the counter of the transmission mask timer 1f is reset only once, but the present invention is not limited to this. The reset may be performed twice or more.

Therefore, in the present embodiment, there is no waste in transmitting the same type of signal, and the number of signals on the transmission line 2 is reduced, so that a space for transmitting other signals can be secured.

The lighting fixture 1 that has transmitted the human body detection signal
By resetting the timer unit 1e of itself and the counter of the timer unit 1e of the other lighting fixture 1 by the human body detection by, the time synchronization with the other lighting fixture 1 can be established.

The lighting fixture 1 that has received the human body detection signal
Resets the transmission mask timer 1f only once when a human body is detected by its own human sensor 1b, so that each lighting fixture 1 counts the transmission mask timer 1f at a different timing, and the human body detection signal When the reception of the human body detection signal from the lighting equipment 1 that has output the human body detection signal is stopped, the traffic on the transmission line 2 caused by the lighting equipment 1 simultaneously outputting the human body detection signal at the same timing suddenly increases. Can be prevented from increasing.

In the first and second embodiments, the case where the human body detection signal based on the information from the human sensor 1b is used has been described. However, the present invention is not limited to this. The present invention can also be applied to a signal such as turning off or dimming, or a signal including ambient brightness information detected by an illuminance sensor.

Embodiment 3 = FIG. 4 is a block diagram showing another embodiment of the lighting apparatus 1 of the lighting apparatus, and FIG. 5 is a time chart for explaining the operation of the lighting apparatus according to the present embodiment. It is a chart. The lighting fixture 1 according to the present embodiment has a configuration in which a retrigger timer 1g is provided in the lighting fixture 1 shown in FIG.

The lighting device according to the present embodiment is different from the lighting device according to the second embodiment in that when lighting device A transmits a human body detection signal, it counts its own retrigger timer 1g and detects itself while counting. In this case, a human body detection signal is transmitted at the end of the count, the retrigger timer 1g is reset, and the counting is performed again. In other operations, Embodiment 2
Is the same as In the present embodiment, the time of the retrigger timer 1g (the second predetermined time) is shorter than the time of the transmission mask timer 1f (the first predetermined time).

Therefore, in the present embodiment, in addition to the effect of the second embodiment, when a human body is detected while the retrigger timer 1g is counting, a human body detection signal is transmitted upon completion of the counting. Therefore, it is possible to prevent the same type of signal from being transmitted many times within a predetermined time, and it is possible to further reduce the number of signals on the transmission line 2 as compared with the first and second embodiments.

Further, since the time of the retrigger timer 1g is shorter than the time of the transmission mask timer 1f, even if the transmission side of the human body detection signal delays signal transmission due to some processing, the reception side of the human body detection signal is prematurely shortened. Signal output can be prevented.

Embodiment 4 = The lighting device according to the present embodiment is different from the lighting device according to Embodiment 3 in that during the counting of its own retrigger timer 1g, another device which is not supposed to be received due to some cause. When receiving the human body detection signal from the lighting equipment 1, the counter of the own retrigger timer 1 g is reset, and the operation of the third embodiment is performed based on the human body detection signal from the other lighting equipment 1. It is.

By doing so, in addition to the effect of the third embodiment, a signal that cannot be received due to an abnormality of another lighting apparatus 1 or a delay in processing may be received. Can be dealt with without transmitting useless signals.

[0049]

According to the first aspect of the present invention, there is provided a lighting fixture having a lamp load and a control unit for controlling the lamp load.
In a lighting device that is connected to a plurality of transmission lines and controls a lamp load based on a control signal from another lighting device or a control signal of its own lighting device, a control signal from another lighting device is transmitted to the same device as its own lighting device. Since priority is given to one type of control signal, a lighting device capable of reducing the number of the same type of signal on the transmission line can be provided.

According to a second aspect of the present invention, in the lighting device according to the first aspect, a human sensor is provided in the lighting fixture, and the control signal is an output from the human sensor. The same effect as that of the invention is achieved.

According to a third aspect of the present invention, in the lighting device of the first aspect, an illuminance sensor is provided in the lighting fixture, and the control signal is an output from the illuminance sensor. It has the same effect as.

According to a fourth aspect of the present invention, in the lighting device of the first aspect, since the control signal is a signal from a remote controller, the same effect as that of the first aspect of the invention can be obtained.

According to a fifth aspect of the present invention, in the illuminating device according to any one of the first to fourth aspects, the illuminating device for the first predetermined time after receiving the control signal from the another illuminating device. Priority is given to the same kind of control signal, so that the same effect as the invention according to any one of claims 1 to 4 is obtained.

According to a sixth aspect of the present invention, in the lighting device according to any one of the first to fifth aspects, when the own control signal is generated within a second predetermined time from the transmission of the own control signal. Since the self-control signal is transmitted in response to the completion of the time measurement of the second predetermined time, the same effect as the invention according to any one of claims 1 to 5 can be obtained.

According to a seventh aspect of the present invention, in the lighting device according to the fifth or sixth aspect, the control signal is not received from another lighting fixture within the first predetermined time, and the first signal is not received. When the same type of control signal is generated within the predetermined time, the same type of control signal is transmitted upon completion of the time measurement of the first predetermined time. The same effects as those of the invention described in any one of the above items 6 can be obtained.

According to an eighth aspect of the present invention, in the lighting device according to the sixth or seventh aspect, the first predetermined time is set to be longer than the second predetermined time. A certain amount of extra time can be provided on the receiving side of the control signal with respect to the signal transmission delay due to the delay on the transmitting side, and the number of signals on the transmission line is prevented from increasing even when an unexpected situation occurs. be able to.

According to a ninth aspect of the present invention, in the lighting device according to any one of the fifth to eighth aspects, the timing of the first predetermined time is triggered by receiving a control signal from another lighting apparatus. Since the reset and start are performed, in addition to the effect of the invention according to any one of claims 1 to 8, it is possible to ensure the operational synchronization between the other lighting fixtures and the own lighting fixture. Can be.

According to a tenth aspect of the present invention, in the illuminating device according to any one of the fifth to ninth aspects, there is provided the illumination device according to the first aspect.
The predetermined time is reset and started a predetermined number of times, triggered by the generation of the control signal of the own lighting equipment, so that when the reception of the control signal from another lighting equipment is stopped, each lighting It is possible to prevent a sudden increase in traffic on the transmission line, which is caused by the devices simultaneously outputting control signals at the same timing.

According to an eleventh aspect of the present invention, in the illuminating device according to any one of the first to tenth aspects, the self-generated light generated within a third predetermined time after receiving a control signal from another luminaire. Since the same type of control signal of the lighting apparatus is not processed, the same effect as the invention according to any one of the first to tenth aspects is obtained.

According to a twelfth aspect of the present invention, in the illuminating device according to the eleventh aspect, the third predetermined time is determined by receiving a control signal from another luminaire and determining the time of the first predetermined time. Since the time until the number of times of resetting is set, the same effect as the invention according to claim 11 is obtained.

According to a thirteenth aspect of the present invention, in the lighting device according to any one of the sixth to twelfth aspects, the control signal of the own lighting fixture is transmitted from another lighting fixture within the second predetermined time. When the same type of control signal is received, the second predetermined time is reset, and processing is performed based on the control signal from the other lighting fixture. In addition to the effects of the described invention, even when a signal that should not be received due to an abnormality of another lighting apparatus or a delay in processing is received, it is possible to cope without transmitting a useless signal. it can.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of a lighting fixture of a lighting device according to the present invention.

FIG. 2 is a time chart illustrating an operation of the lighting device according to the present embodiment.

FIG. 3 is a time chart illustrating an operation of a lighting device according to another embodiment of the present invention.

FIG. 4 is a block diagram showing another embodiment of the lighting fixture of the lighting device according to the present invention.

FIG. 5 is a time chart illustrating an operation of the lighting device according to the present embodiment.

FIG. 6 is a time chart illustrating an operation of a lighting device according to a conventional example.

[Explanation of symbols]

 Reference Signs List 1 lighting equipment 1a communication unit 1b human sensor 1c lamp load 1d control unit 1e timer unit 1f transmission mask timer 1g retrigger timer 2 transmission line

Claims (13)

[Claims] 1. A plurality of lighting fixtures each having a lamp load and a control unit for controlling the lamp load are connected to a transmission line,
In a lighting device that controls a lamp load based on a control signal from another lighting fixture or a control signal of its own lighting fixture, a control signal from another lighting fixture has priority over a control signal of the same kind of its own lighting fixture. A lighting device, comprising: 2. The lighting device according to claim 1, wherein a motion sensor is provided in the lighting apparatus, and the control signal is an output from the motion sensor. 3. The lighting device according to claim 1, wherein an illuminance sensor is provided in the luminaire, and the control signal is an output from the illuminance sensor. 4. The lighting device according to claim 1, wherein the control signal is a signal from a remote controller. 5. The control apparatus according to claim 1, wherein the control signal is given priority over a control signal of the same kind for the own lighting apparatus for a first predetermined time after receiving the control signal from said another lighting apparatus.
The lighting device according to any one of the above. 6. When a self-control signal is generated within a second predetermined time from the transmission of the self-control signal, the self-control signal is transmitted with completion of time measurement of the second predetermined time. The lighting device according to claim 1, wherein: 7. If the control signal from another lighting fixture is not received within the first predetermined time and the same control signal of its own is generated within the first predetermined time, the first signal is output. The lighting device according to claim 5 or 6, wherein the control signal of the same type is transmitted as the time measurement of the predetermined time is completed. 8. The lighting device according to claim 6, wherein the first predetermined time is set to be longer than the second predetermined time. 9. The method according to claim 5, wherein the first predetermined time is reset and started by receiving a control signal from another lighting apparatus as a trigger. The lighting device according to any one of the above. 10. The method according to claim 5, wherein the first predetermined time is reset and started a predetermined number of times by generating a control signal of the own lighting device as a trigger. The lighting device according to any one of claims 9 to 13. 11. The apparatus according to claim 1, wherein the control signal of the same type of the own lighting apparatus, which is generated within a third predetermined time after receiving the control signal from another lighting apparatus, is not processed. The lighting device according to claim 10. 12. The method according to claim 11, wherein the third predetermined time is a time from reception of a control signal from another lighting fixture to reset of a predetermined number of times of the first predetermined time. Item 12. The lighting device according to Item 11. 13. When receiving a control signal of the same type as a control signal of the own lighting device from another lighting device within the second predetermined time, resetting the second predetermined time, and resetting the other lighting device. 13. The lighting device according to claim 6, wherein the processing is performed based on a control signal from an appliance.