JPS6068592A - Illumination controller - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Technical field of invention The present invention relates to a lighting control device.

Technical background of the invention and its problems Hitherto, so-called window control has been known, which dims lighting equipment used indoors such as small stores by combining it with a light sensor that detects the daylight level by receiving outside light. There is. However, the control is step dimming control, for example, 100%, 50%
It can be switched to three levels: % and 0%. Therefore, when looking at the dimming state, the light reception level (daylight level) of the optical sensor as shown in Fig. 1 (,) is compared to the
), which is effective in terms of power saving, but in stores and the like, it gives customers a sense of discomfort when the dimming level changes.

Also, if you look at the entire room of a store or other store, there are multiple lighting fixtures installed, but as the name suggests, only the lighting fixtures near the window are subject to dimming, and the lighting fixtures in the back are always set at 100%. % lighting, two control systems are required and there is no power supply.

Accordingly, the applicant has proposed a device in which continuous dimming control is performed in accordance with the daylight level detected by an optical sensor. However, even with such a continuous dimming control method, the amount of daylight received by lighting equipment differs depending on its placement position, and the amount of daylight received by lighting equipment varies depending on the daylight level of the light sensor. It is impossible to achieve uniform indoor illuminance, such as uniform dimming control under the same conditions. However, even with the window control method, it is not possible to equalize the indoor illuminance, and power is wasted.

Purpose of the Invention The present invention has been made in view of the above points, and makes it possible to perform dimming control using daylight over a wide area indoors, while taking advantage of the continuous dimming control system, and to reduce indoor illuminance. The object of the present invention is to obtain a lighting control device that can achieve uniformity of lighting and power saving.

Summary of the Invention The present invention employs a continuous dimming control method using a light sensor, a power control unit, and a phase control unit, and the entire room where daylight can be used is controlled under one light sensor. By dividing a plurality of lighting fixtures into blocks with a degree of daylight reception of 55'J, and by providing a power control section and a phase control section for each block, and making the control characteristics different, it is possible to achieve appropriate control over a wide range of areas. It is configured to perform dimming control.

Embodiment of the Invention An embodiment of the present invention will be explained as shown in FIGS. Depending on the illuminance, for example, as shown in FIG. 1 connected in series with the optical sensor 1, and a phase control section 5 which controls the phase angle of the triac 4 in response to the output of the optical sensor 1.

First, the output of the optical sensor 1 is inputted to an amplifier 6. Here, by adjusting the variable resistor VRi, the third
As shown in Figure (b), the setting is such that the slope of the dimming characteristic curve can be adjusted. The output of the amplifier 6 is set to be ORed with the output of the low illuminance setting section 7 by the diodes l)+ and l)2 so that the higher output is produced. The third (C) shows this OR output. Here, the low illuminance level can be variably adjusted by variable resistor VR2.

This OR output is then input to the subtracter 8, and the 31st m
The output is converted as shown in (d). The output of this subtracter 8 is the diode D3. D4 is set to perform an OR with the output of the high illuminance setting section 9 and produce the higher output. FIG. 3(c) shows this OR output. Here, the high illuminance level can be variably adjusted by variable resistor VR3. This output is passed through an integrator 10 to a phase control I
It is input to C1,1, and controls the trigger pulse generation circuit 13 via the coupler 2. The output pulse of the trigger pulse generation circuit 13 controls the angle of the triac 4. Since this trigger pulse is output according to the light reception level of the previous sensor 1, the lighting load 2 is as shown in Fig. 4. In response to changes in the received light level as shown in (a), continuous dimming is performed as shown in Figure 1 (b).In this way, the light is continuously adjusted according to the level detected by optical sensor 1. Since the light is controlled in a consistent manner, there is no sudden change during dimming, and no discomfort is caused.

If we look at the received light level - dimming level characteristic, it corresponds to Fig. 3(e), and the 5th and 1st lines, that is, the slanted straight line indicates the continuous dimming property. However, the lower limit is regulated by the low illuminance setting section 7, and the lower limit is restricted by the high illuminance setting section 9, for example, indicating that continuous dimming is possible in the range of 0 to 90%. Therefore, for example, even if the light sensor 1 detects that the outside light is quite bright, if it remains constant and the outside light is too bright, the light will not be dimmed along the inclined straight line, and the light will be maintained at a dimming level of at least 20%. be done. Therefore, if the application applies to a store, whether it is bright outside during the day or not.
+ will not cause the lighting fixture 4 to turn off, and will not cause a negative image. Conversely, even if the light sensor 1 detects that it is getting dark outside, if the level is below a certain level -C, the dimming state will be suppressed to 90%. No more wasted electricity.

In addition, in FIG. 2, the output of the phase control ICL I is connected to the total optical star 1 - circuit 1 by the diode D 5 + D 6.
This all-optical start circuit 1 is ORed with the output of 4.
4 is 100% without phase control when starting the light.
This improves the starting characteristics by turning on the light.

Therefore, in reality, the lighting loads 2 are arranged indoors, for example, as shown in FIG.

In this case, the degree of daylight received differs depending on the size and position of the window 15, the number and arrangement of lighting loads 2, etc., and the appropriate value of the amount of light control for the light reception level of the optical sensor differs. For example, load 2 is set to B 1 depending on the degree of daylight exposure.
It is divided into blocks as shown in ~B3. Then, for each block B1~+33, 1-react 48~
4c, phase control section 5a 5cR provided, and variable resistor V
By adjusting Rt, VRz, VR3, a - c in Figure 7.
The control characteristics are set to different values as shown in the figure. That is, the slope, upper limit value, and lower limit value of each control characteristic are different. For example, the characteristic a for block 131 is 20
Steep slope at ~°70%, characteristic 1) for block B2 is 50-80%, characteristic C for block B3 is 60-9
At 0%, it is set like a gentle slope.

With such a configuration, continuous dimming control is performed for the lighting load 2 of each block, but each block B1 to 133 has different control characteristics with respect to the daylight level detected by the light sensor 1 of -1. For example, in the case of dog flock B1, which is close to the window 15 and receives daylight, characteristic a is applied.
It is said that it is relatively dark due to the fact that it is relatively dark, and on the other hand, it is located in the back and receives daylight (
The block B3, which has a small degree of distortion, is comparatively reduced by characteristic C, and as a result, it is possible to achieve uniform indoor illumination while saving power. Also, only one sensor is required.

Effects of the Invention Since the present invention is configured in a two-way manner, it is possible to exert the advantages of the continuous dimming control method and to perform dimming control using daylight over a wide range of the entire room, thereby saving energy. It is possible to achieve uniform indoor illuminance while achieving electrification.
Provide comfortable lighting.

[Brief explanation of drawings]

Fig. 1 is a characteristic diagram showing a conventional example, Fig. 2 is a block diagram showing an embodiment of the present invention, Fig. 3 is an operation waveform diagram of each part, and Fig. 4 is a characteristic diagram showing a conventional example.
5 is a characteristic diagram, FIG. 6 is a block diagram, and FIG. 7 is a characteristic diagram. 1. Light sensor, 2. Lighting load, 3. AC power supply,'
] a~4 c 1-Liack (power control section), 5a
~5c...Phase control unit Applicant: Toshiba Electric Materials Corporation

Claims (1)

[Claims] Equipped with a light sensor that detects the daylight level by receiving external light,
A plurality of lighting loads placed indoors are divided into blocks according to the degree of daylight received, and these lighting loads are connected to an AC power source via a power control unit for each block, and the daylight detected by the light sensor is connected to the AC power source. The feature is that each phase control section is provided to continuously control the phase angle of each power control section according to the level, and the control characteristics of each phase control section are set differently depending on the degree of daylight exposure, etc. lighting control device.