JPH01251580A - Proper illuminance maintenance control system - 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] [Industrial Application Field] The present invention relates to a control system for maintaining proper illuminance, and in particular, a system for maintaining proper illuminance at all times, especially against a decrease in luminous flux due to aging of the lamp itself or a decrease in luminous flux due to dirt on the fixture. The present invention relates to a control system for maintaining appropriate illuminance.

[Prior Art] Conventionally, lighting systems in offices, theaters, etc. have a main operation panel and signal terminals connected to the main operation panel via transmission lines, and from the main operation panel to each signal terminal. Based on the sent dimming data, there is a system that performs on/off control or dimming control of dimmable lighting fixtures with built-in dimming function connected to each signal terminal, and lighting fixtures connected to the dimmer. It is being The illuminance of lighting fixtures used in such systems gradually decreases over time depending on the luminous flux reduction characteristics of the lamps used in the fixture and the dirt on the fixture, and the rate of luminous flux decline is between 20 and 40%. %. In order to prevent the visual environment from deteriorating due to such a decrease in illuminance, for example, workers regularly measure the illuminance of the place where the lighting equipment is installed using a luminometer, and based on this measurement, the main operation panel etc., the setting values were adjusted manually.

[Problems to be Solved by the Invention] However, in such a conventional method, it is necessary to periodically measure the illuminance of the place where the lighting equipment is installed and manually adjust the illuminance setting value. Therefore, in order to maintain appropriate illuminance and prevent deterioration of the visual environment, laborious manual illuminance adjustment work is required, and it is inconvenient that it is impossible to precisely maintain illuminance.

In view of the problems in conventional systems, an object of the present invention is to maintain an appropriate illuminance at all times even when the luminous flux of a lighting equipment decreases due to aging of the lamp or due to dirt on the equipment. , to prevent deterioration of the visual environment and to realize power consumption.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a dimmable lighting fixture with a built-in dimming function or a lighting fixture connected to a dimmer, and a dimmable lighting fixture that generates a dimming signal. Appropriately equipped with a signal terminal device that sends a signal to the dimming lighting device or dimmer, and a dimming level setting device connected to the signal terminal device and setting the dimming level of the dimming lighting device or dimmer. An illuminance maintenance control system comprising: a plurality of illuminance sensors; means for setting maximum and minimum values of initial illuminance of the lighting equipment; and average illuminance determined from the maximum and minimum values of the initial illuminance and the illuminance sensor. illuminance correction means for calculating a correction value for correcting the setting value of the dimming level setting device from the above, and sending it to the signal terminal device, the signal terminal device calculating the correction value sent from the illuminance correction means. The set value of the dimming level setter is corrected according to the above.

[Operation] According to the above configuration, the illuminance correction device can calculate the rate of decrease in illuminance based on the maximum and minimum values of the initial illuminance set in advance and the current illuminance value obtained by the illuminance sensor. Then, a correction value can be calculated and sent to the signal terminal so that the illuminance at a predetermined setting value of the dimming level setter does not change. The signal terminal device corrects the setting value of the dimming level setter by adding this correction value to the setting value of the dimming level setter, and controls the dimming of the lighting equipment.

[Example code] Hereinafter, the present invention will be explained in detail using the drawings.

FIG. 1 shows a schematic configuration of a proper illuminance maintenance control system according to an embodiment of the present invention. The system shown in the figure includes a signal terminal 1, a dimming lighting fixture 4, an illuminance correction device 6, and an illuminance sensor 10, which are connected to a main operation panel (not shown). Although the illuminance sensor 10 may be installed on a desk surface or a wall surface, it is preferable to install it at a position where the detected illuminance is proportional to the indoor illuminance. The signal terminal device 1 has a plurality of dimming level setters 2, which allow the dimming level of the dimming lighting equipment 4 to be set. The signal terminal device 1 generates, for example, a pulse width modulated dimming signal for dimming the dimming lighting load 4 based on the dimming data from the main operation panel and the setting value of the dimming level setting device 2, and transmits it. It is sent out via line 3. The illuminance of each dimming lighting load 4 is set based on this dimming signal, and the lighting is dimmed. Power is provided to each dimming lighting load 4 as indicated by arrow 5.

The illuminance correction device 6 inputs illuminance data from the illuminance sensor 10 as described later, and compares this with the maximum value of the initial illuminance MAX.
and the minimum value MIN are read from the maximum illuminance setting device 7 and the minimum illuminance setting device 8, and a correction value is calculated from these data and sent to the signal terminal device 1. The signal terminal 1 corrects the illuminance based on this correction value, lights the dimming lighting load 4 in a dimming manner, and always maintains an appropriate illuminance. 9 is a measurement command switch.

FIG. 2 is a graph showing the relationship between the VR scale and illuminance for explaining the illuminance correction method in the system of FIG. The VR scale refers to the scale of the dimming level setter 2. The operation of the system shown in FIG. 1 will be explained below with reference to FIG.

First, the signal terminal 1 sets the illuminance/
The VR scale relationship is assumed to be a straight line. and,
Maximum initial illuminance without luminous flux reduction (for example, 700
Lx) and initial illuminance minimum value MIN (for example, 300L
x) is read by a predetermined illuminance sensor 10, set in advance in the maximum illuminance setter 7 and the minimum illuminance setter 8, and provided to the illuminance correction device 6. As a result, the V of the dimming level setter 2
According to the setting of the R scale (0 to 10 scale), the illuminance of the corresponding dimmable lighting fixture is 300Lx, as shown by straight line A in Figure 2.
It changes linearly between 700 Lx and 700 Lx.

Therefore, the user adjusts the illuminance of the lighting equipment and sets it to a desired illuminance, for example, 580LX with a VR scale of 7.

Next, after an appropriate number of days have elapsed, a maintenance control command is automatically given manually or by a timer.

In this embodiment, this command can be issued by turning on the measurement command switch 9 of the illuminance correction device 6. Based on this command, the illuminance correction device 6 calculates a correction value as follows.

First, a 100% lighting command signal is sent from the illuminance correction device 6 to the signal terminal device 1. In response to this, the signal terminal device 1 sends a dimming signal to a predetermined dimming lighting fixture 4 so that it lights up at 100% illuminance. As a result, the predetermined dimmable lighting fixture 4 is 10
Lights up at 0% illuminance. Then, the illuminance when the dimming lighting fixture 4 is turned on at this time is measured by the illuminance sensor 10. Here, it is assumed that the measurement result is 620Lx. In other words, the maximum illuminance of the lighting fixture 4 has decreased from 700 Lx to 620 Lx. Next, from this result, correction values are determined as shown in the following (1) to (2).

■ First, find the changed minimum illuminance nlnX.

That is, 620 Lx/700 Lx-11X/300 Lx
From rAln
/ scale, that is, one scale of the dimming level setter 2 is 35.
This corresponds to 5Lx.

■ 580L to achieve the desired illuminance of 580Lx!
-2B5Lx + (35,5Lx/scale)XX Therefore, X-8,87 (Thus, if no correction is made, the VR scale is 8.8
7, the desired illuminance of 580Lx cannot be obtained. ) ■ Calculate the correction value as 8.87-7-1.87.

The scale up correction value 1.87 calculated as described above is sent from the illuminance correction device 6 to the signal terminal device 1.

After receiving this, the signal terminal 1 keeps the VR scale 7 of the dimming level setter as it is, increases the scale 7 by a correction value of 1.87 to 8, 87, and lights the dimming lighting fixture 4.

As a result, the scale position of the dimming level setter 1 that is actually adjusted remains at 7, and the desired illuminance of 580Lx can be obtained.

Note that the above correction may be performed for each system of lighting equipment 4 that can be dimmed by one dimming level setting device 2, or
Once the correction is completed for one system, the correction value may be used for the VR system that uses the same type of lighting equipment as that system, assuming that the correction value is the same.

[Effects of the Invention] As explained above, according to the present invention, the correction values for correcting the setting value of the dimming level setter that sets the dimming level of a predetermined lighting device are set to the maximum and minimum values of the initial illuminance. This is calculated from the illuminance value obtained from the illuminance sensor, and the dimming level is corrected using the correction value, so even if there is a decrease in luminous flux due to changes in the lamp itself over time or due to dirt on the fixture, the user can It is possible to always maintain the appropriate illuminance set to prevent deterioration of the visual environment. Furthermore, since a proper illuminance can be maintained, the illuminance will not be unnecessarily brightened too much in response to a decrease in illuminance, resulting in power savings.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram of an appropriate illuminance maintenance control system according to an embodiment of the present invention, and FIG. 2 is a graph for explaining calculation of a correction value. 1... Signal terminal device, 2... Dimming level setting device,
4... Dimmable lighting equipment, 6... Illuminance correction device, 7.
... Maximum illuminance setting device, 8 ... Minimum illuminance setting device, 10.
...Illuminance sensor.

Claims (1)

[Claims] 1. A dimmable lighting fixture with a built-in dimming function or a lighting fixture connected to a dimmer, and a signal that generates a dimming signal and sends it to the dimming lighting fixture or dimmer. An appropriate illuminance maintenance control system comprising a terminal device and a dimming level setting device connected to the signal terminal device and setting the dimming level of the dimming lighting equipment or dimmer, the system comprising: a plurality of illuminance sensors; , means for setting the maximum and minimum values of the initial illuminance of the lighting equipment, and correcting the set value of the dimming level setting device from the maximum and minimum values of the initial illuminance and the average illuminance obtained from the illuminance sensor. illuminance correction means for calculating a correction value to be sent to the signal terminal device, and the signal terminal device corrects the set value of the dimming level setting device according to the correction value sent from the illuminance correction means. An appropriate illuminance maintenance control system characterized by: