JPH07147193A - Lighting system - Google Patents

Abstract

PURPOSE:To provide a lighting system capable of avoiding the influence on a remote controller by the infrared ray of a lamp light regardless of the mounting number of luminaires. CONSTITUTION:A judging circuit 61... is provided in correspondence to the light receiving element 4 of each receiving part 21... and rectifies and smooths the receipt signal outputted from the corresponding light receiving element 4. It is judged whether the waveform after rectification and smoothing is the received waveform by lamp light or the received waveform of control signal, and the judgment result is transmitted to a signal processing part 7 consisting of a microcomputer. In the signal processing part 7, the amplifier 5 of the corresponding receiving part 21... is controlled on the basis of the judgment result of each judging circuit 61... and the signal level to control the sensitivity of the receiving part 21....

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting device for remotely controlling a lighting fixture with a remote controller.

[0002]

2. Description of the Related Art A control signal for controlling the lighting state of a lighting fixture and the position of the fixture is transmitted from a remote controller (hereinafter abbreviated as remote controller) using infrared rays as a carrier signal,
In recent years, the number of lighting devices in which the transmitted control signal is received by a receiver provided in the lighting fixture and the lighting fixture performs control according to the content of the control signal is increasing.

However, unlike an infrared remote control system used for a television or an audio device, since the receiving section is located near the lamp, it is affected by the infrared light contained in the lamp light, causing a problem in the reach of the control signal. Has occurred. Japanese Patent Application Laid-Open No. 5-12991 aims to improve this reach.
There is one shown in No. 1. In this conventional example, the receiving portions are provided at both ends of the chassis of the lighting fixture, and the light receiving direction is directed in the direction opposite to the direction in which the lamp is mounted to reduce the influence of the lamp light and improve the reach of the control signal. I am trying to

[0004]

However, JP-A-5-1 is used.
Even in the lighting device shown in Japanese Patent No. 29911 for improving the reach of the control signal, it is difficult to avoid the influence of the lamp light of other lighting devices when a plurality of lighting devices are turned on, and as a result, Had the problem of not improving remote control performance.

The present invention has been made in view of the above problems, and an object of the present invention is to avoid the influence of infrared light of lamp light on a remote control regardless of the number of lighting fixtures installed. It is to provide a lighting device.

[0006]

[Means for Solving the Problems] In response to the above-mentioned purpose,
According to the invention of claim 1, an external remote controller that transmits a control signal using infrared rays as a signal medium, a plurality of receiving units that receive the control signal transmitted from the remote controller, and a lighting state of the light source by a signal from the receiving unit. And a discriminating means for discriminating whether the signal received by the receiving part is an optical noise or a control signal, and a discriminating means for discriminating the signal received by the receiving part. The lighting device is provided with means for controlling the sensitivity of the receiving unit based on the determination result of the means.

According to a second aspect of the present invention, in the first aspect of the invention, the sensitivity of the receiving section for receiving the control signal is increased. According to the invention of claim 3, in the invention of claim 1,
This reduces the sensitivity of the receiving unit that receives optical noise.

[0008]

According to the present invention, when other lighting fixtures are used at the same time, the influence of infrared light contained in the lamp light of the other lighting fixtures can be reduced, and therefore the reachable distance of the control signal can be increased. The remote control performance is improved.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. (Embodiment 1) As shown in FIG. 2, a lighting device of this embodiment has a remote controller 1 which transmits a control signal using infrared rays as a carrier wave.
And a lighting fixture 3 in which a plurality of receiving portions 2 ₁ for receiving the control signal X transmitted from the remote controller 1 are provided at predetermined intervals on the outer peripheral portion of the fixture chassis corresponding to the vertical center of the lamp. It

As shown in FIG. 1, each receiving section 2 ₁ of the luminaire 3 is composed of a light receiving element 4 which is a pin photodiode and an amplifier 5 which amplifies a light receiving signal. What can be controlled is used. Further, the discriminating circuit 6 ₁ corresponds to the light receiving element 4 of each receiving unit 2 ₁ .
.. are provided, and the discrimination circuit 6 ₁ rectifies and smoothes the signal output from the light receiving element 4, and determines whether the received waveform of the lamp light or the received waveform of the control signal depends on the waveform after the rectification and smoothing. It discriminates and sends the discrimination result to the signal processing unit 7 including a microcomputer.

Discrimination of whether the received light is the received waveform of the lamp light or the received waveform of the control signal will be described. The transmitted control signal is composed of a code signal formed by modulating an infrared signal with a pulse signal as shown in FIG.
The data code part has a certain time width (for example, 10 μs). On the other hand, the lamp light (light noise) is shown in Fig. 3.
As shown in (b), the frequency of the input power source (50 / 60H
It is a continuous signal with a ripple of z).

Therefore, the rectified and smoothed signal has a waveform of a fixed time width as shown in FIG. 4 (a) in the case of the control signal, but in the case of lamp light (light noise) as shown in FIG. 4 (b). As shown in the figure, the waveform is continuous, and therefore by observing the continuity of this waveform, it is possible to determine whether it is a control signal or lamp light (light noise). The signal processing unit 7 controls the amplifiers 5 of the corresponding receiving units 2 ₁ ... on the basis of the discrimination result of each discrimination circuit 6 ₁ ... and the signal level.

The control signal received and amplified by the receiving section 2 ₁ is taken into the control section 8, and the control section 8 controls the lighting state of the lamp 10 through the lighting circuit 9 based on the content of the received code. Of course, in addition to the lighting state, the control by the control signal is not limited to the lighting state of the lighting device 3 with the movable device,
Of course, it may be used for controlling the lighting fixture such as controlling the lighting direction.

Thus, in the case where the lighting fixture 3 of the apparatus of this embodiment is mounted in a ceiling state so as to be surrounded by a plurality of lighting fixtures 3a and 3b for fluorescent lamps or incandescent lamps as shown in FIG. Assuming that the luminaire 3a is turned on and the luminaire 3b is turned off, in the luminaire 3, the receiving unit 2 ₁ is greatly affected by the lamp light (light noise) of the luminaire 3a, while the receiving unit 2 ₃ is the lamp. The influence of (optical noise) is small.

This state is discriminated by discriminating circuits 6 ₁ and 6 ₃ provided corresponding to the respective receiving units 2 ₁ and 3 ₃ , and the result is sent to the signal processing unit 7. In response to the results of the discrimination circuits 6 ₁ and 6 ₂ , the signal processing unit 7 lowers the receiving sensitivity of the receiving unit 2 ₁ that is greatly affected by the lamp light (light noise) or cuts the received signal. Control the amplifier 5 in ₁ . On the other hand, the amplifier 5 of the receiving unit 2 _{3 which} is less affected by the lamp light (optical noise) is controlled so as to increase the receiving sensitivity.

Therefore, the influence of the lamp light (light noise) is reduced and the distance over which the control signal transmitted from the remote controller 1 can be reliably received is increased, and the remote controller performance is improved. In FIG. 2, the lit lighting fixture is 3b.
In the case where the lighting fixture that is turned off is 3a, the effect of the lamp light (light noise) on the receiver 2 ₁ is small and the lamp light (light noise) on the receiver 2 ₃ is small, contrary to the above case.
Will be greatly affected. In this case, the signal processing unit 7 receives the results of the discrimination circuits 6 ₁ and 6 ₃ to increase the receiving sensitivity of the receiving unit 2 ₁ and decrease the receiving sensitivity of the receiving unit 2 ₃ or cut the received signal. To control each amplifier 5.

When both of the lighting fixtures 3a and 3b are turned on, the influence of the lamp light (optical noise) on the corresponding receiving units 2 ₁ and 3 ₂ becomes large, so that the signal processing unit 7 has a corresponding one. In response to the results of the discrimination circuits 6 ₁ and 6 ₃ , the respective amplifiers 5 are controlled so as to reduce the reception sensitivity of both the reception units 2 ₁ and 3 ₃ or cut the reception signals. On the other hand, the light receiving unit 2 ₂ receives the control signal, which is not affected by the lighting fixtures 3a and 3b.

In this way, in this embodiment, the sensitivity of the receiver 2 that is not affected by the lamp light (noise light) is increased, and conversely, the sensitivity of the receiver 2 that is affected is reduced or the received signal is cut. As a result, a control signal that is not affected by noise can be sent to the control unit 8, and the resulting signal reaching distance can be increased. FIG. 5 is a flowchart showing the operation of this embodiment described above.

The receiving portion 2 ₁ is provided on the outer peripheral portion of the fixture chassis of the lighting fixture 3 as shown in FIG. 2, but the infrared light included in the lamp light of other lighting fixtures arranged in the surroundings is received. Since it is easily affected, if the receivers 2 ₁ ... Are attached to the end of the shade 30 of the luminaire 3 as shown in FIG. 6 or are attached above and below the luminaire 3 as shown in FIG. When used together with a fixture, it is possible to reduce the influence of infrared light contained in the lamp light of other lighting fixtures.

(Second Embodiment) In the first embodiment, the light receiving element 4 is used.
The signal sensitivity of the receiving section 2 ₁ is controlled by discriminating between the lamp light (light noise) and the control signal based on the signal waveform output from the discriminating circuit 6 ₁ in the present embodiment. Instead of discriminating the waveform of the signal, the level of the received signal is discriminated and the discrimination result is given to the signal processing unit 7. The signal processing unit 7 responds to the direction in which the control signal is transmitted from the remote controller 1 based on the discrimination result. Then, the receivers 2 ₁ ... With a high received signal level are specified, and the amplifier 5 is controlled so as to increase the reception sensitivity of the receivers 2 ₁ ... With a high received signal level.
Since the overall configuration is similar to that of the first embodiment, the description of the configuration is omitted.

For example, in FIG. 2, the receiving unit 2₁From the side
When the control signal is transmitted by the remote controller 1, the receiving unit 2₁of
Since the received signal level is high, signals based on this level
In the processing unit 7, the receiving unit 2 having a high received signal level₁Feeling of reception
Increase the degree, other receiver 2 ₃Three₂Receives the control signal
It is hard to believe, so each amplifier 5 should be set to reduce the receiving sensitivity.
Control it.

(Embodiment 3) In this embodiment, as shown in FIG. 8, in the receiver 2 provided on the side of the luminaire 1, the received signal output from the light receiving element 4 is sent to the signal processor 7 composed of a microcomputer. At the same time as capturing, the signal processing unit 7 detects the level of the received signal. At the same time receiver 2
The pulse of the data code of the control signal output from is taken in and detected by the signal processing unit 7, and when the pulse of the data code is not detected, the signal processing unit 7 determines that it is lamp light (light noise), The amplifier 5 of the receiving unit 2 is controlled as in the above-described embodiment.

The signal processing section 7 shown in FIG. 8 is provided for each receiving section 2 provided in the lighting fixture 3. In the present embodiment configured as described above, regardless of the number of lighting fixtures installed, the reaching distance can be increased while avoiding the influence of infrared light included in the lamp light, and the remote control performance can be improved.

[0024]

According to the present invention, when other lighting fixtures are used at the same time, the influence of infrared light contained in the lamp light of the other lighting fixtures can be reduced, and therefore the reachable range of the control signal is long. This has the effect of improving the remote control performance.

[Brief description of drawings]

FIG. 1 is a circuit configuration diagram in a lighting fixture according to a first embodiment of the present invention.

FIG. 2 is a use explanatory diagram of the above.

FIG. 3A is a waveform diagram of a control signal of the above.
(B) is a waveform diagram of the optical noise of the above.

FIG. 4A is a rectified and smoothed waveform diagram of the control signal of the above. (B) is a waveform diagram of the optical noise of the above.

FIG. 5 is a control flowchart of the above.

FIG. 6 is an explanatory diagram of another mounting example of the above receiving unit.

FIG. 7 is an explanatory diagram of another mounting example of the receiving unit.

FIG. 8 is a circuit configuration diagram of a main part of a third embodiment of the present invention.

[Explanation of symbols]

2 ₁ ... Receiving unit 3 Lighting fixture 4 Light receiving element 5 Amplifier 6 ₁ ... Discrimination circuit 7 Signal processing unit 8 Control unit 9 Lighting circuit 10 Lamp

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location H04Q 9/00 311 U 7170-5K

Claims (3)

[Claims] 1. An external remote controller for transmitting a control signal using infrared rays as a signal medium, a plurality of receiving units for receiving a control signal transmitted from the remote controller, and a lighting state of a light source or a device based on signals from the receiving units. In a lighting device including a lighting fixture having a control means for controlling the state of the lighting fixture such as the position, a discriminating means for discriminating whether the signal received by the receiver is an optical noise or a control signal,
An illumination device, wherein: the illumination device is provided with means for controlling the sensitivity of the receiving unit based on the determination result of the determination means. 2. The lighting device according to claim 1, wherein the sensitivity of a receiving unit that receives the control signal is increased. 3. The illumination device according to claim 1, wherein the sensitivity of a receiving unit that receives optical noise is reduced.