JPH0447955B2 - - Google Patents

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to a lighting control system that centrally controls a large number of lighting loads from a main operation panel via a plurality of terminals, and in particular, The present invention relates to a system that controls lighting using an optical sensor that receives light.

(Prior Art) Conventionally, lighting system systems are known that centrally control one or more lighting loads connected to each of a plurality of terminals based on control signals from a main operation panel. Such a system is provided with one or more optical sensors, and a variable resistor or the like is provided corresponding to each optical sensor. These sensors are installed near windows and used to receive sunlight. In conventional optical sensors, an arbitrary output level is set, and a signal is generated only when that level is exceeded. Depending on this signal, the light is turned off or dimmed to a certain level of darkness. It was on.

Further, the output level of each optical sensor was varied using the variable resistor or the like depending on the situation of the location where each optical sensor was installed.

However, in this conventional form,
Since an adjustment means is required for each optical sensor, the system becomes complicated and costs increase, and variable resistors, etc. are manually adjusted, which requires unnecessary manpower and makes it impossible to improve adjustment accuracy. .

Further, in the conventional type, assuming the weather is gradually changing from cloudy to sunny, a problem arises in that the illumination suddenly becomes dim at a certain stage, that is, at the moment when the light reception level is exceeded. However, some users find it better if the lighting suddenly dims.

(Problems to be Solved by the Invention) In view of the problems with the conventional type described above, an object of the present invention is to easily set the output level of the optical sensor.
Moreover, it is possible to suppress sudden changes in lighting.
Our goal is to provide lighting control systems that meet diversifying needs.

[Structure of the Invention] (Means for Solving the Problems) The lighting control system of the present invention includes a main operation panel, connected to the main operation panel via a transmission line, and connected to each of one or more lighting loads. In a lighting control system that includes multiple terminals and multiple optical sensors and performs lighting control operations for each lighting load by transmitting control signals from the main operation panel, the output of the optical sensor is transmitted to the main operation panel. A setting section and a processor are provided to set the upper limit value of the received light level and the lower limit value of the received light level within the possible range, and the processor is configured to set the actual output level of each optical sensor to the upper limit value of the received light level specified by the setting operation of the setting section. When the value exceeds the received light level, a dark lighting control signal of a certain level is issued, when the received light level falls below the lower limit value, a bright lighting control signal of a certain level is issued, and when the received light level is an intermediate value between the upper limit value and the lower limit value, It is characterized in that it outputs a dimming control signal of a level determined by proportional distribution of the upper limit value and lower limit value, and performs dimming control of the corresponding lighting load.

(Function) With the above configuration, even though the light reception levels of multiple light sensors are binary, they can be set all at once from the main operation panel, so it is easy and
Assuming the weather is gradually changing from cloudy to sunny, the problem with the conventional type was that the illumination suddenly dimmed at a certain stage, that is, the moment the light reception level was exceeded. , two levels of light reception level are provided, and when the light reception level is at an intermediate value between the upper and lower limit values, dimming control is performed at the level determined by proportional distribution of the upper and lower limit values, so that the light reception value gradually decreases to the light reception level. A sudden change in illumination can be suppressed when the upper limit value is exceeded or when the received light level falls below the lower limit value.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.
FIG. 1 shows the configuration of a lighting control system according to an embodiment of the present invention. The system in the figure includes a main operation panel 1, a plurality of terminals 3-1, 3-2, ..., 3-n connected to the main operation panel 1 via a transmission line 2, and each terminal is connected to the main operation panel 1. one or more lighting loads 4, and optical sensors 5-1, 5-2, ..., 5-
It is composed of m, etc. In addition, the main operation panel 1 is
It has a card reader 6 and a processor (not shown).

In the system shown in FIG. 1, a main operation panel 1 controls lighting, turning off, and dimming of lighting loads connected to each terminal by the function of a processor. Each terminal 3-1, 3-2, ..., 3-n includes a circuit that receives a control signal from the main operation panel 1 via a transmission line 2, and controls each lighting load 4 based on the received control signal. That is, it includes a circuit for turning on, turning off, dimming, etc.

Control the dimming of each lighting load, e.g. from 20%
This is done by adjusting the power flow angle in 10% increments up to 100% using a thyristor or the like according to a control signal.

FIG. 2 shows a mark sheet type card as an example of the setting section used in the system of FIG. In the card shown in the figure, the upper and lower limits of the output voltage of each optical sensor 5-1, 5-2, ..., 5-m, that is, the upper limit value of the received light level and the lower limit value of the received light level, are marked with black marks. It is specified. Then, if the output of each optical sensor is within the range determined by these specified upper and lower limits, the corresponding lighting load will be a dimming control signal at the level determined by proportional distribution of the upper and lower limits. Light control is performed accordingly. For example, in optical sensor 5-1 (sensor 1), from 1.0V
Dimming control is performed when the output is 4.0V.

FIG. 3 shows the internal configuration of the main operation panel used in the system of FIG. 1. That is, the main operation panel includes a processor 10, an input circuit 11 that receives output from each optical sensor, a multiplexer 12, and an AD
It is equipped with a converter 13, input buffers 14 and 15, an input/output buffer 16, and the aforementioned card reader 6. The input circuit 11 is composed of an amplifier or the like that amplifies the output signal from each optical sensor.

In the circuit shown in FIG. 3, the aforementioned card is read by the card reader 6, and the read card information is input to the processor 10 via the input buffer 15. On the other hand, the output from each optical sensor is amplified by an input circuit 11 and input to a multiplexer 12. (Multiplexer 1
A code switching signal is applied to 2, and the signals corresponding to the output of each optical sensor are sequentially selected.
It is input to the AD converter 13. ) The AD converter 13 sequentially converts the output of the optical sensor into digital values and inputs them to the processor 10 via the input buffer 14. When the output of one optical sensor is input, the processor 10 determines whether this output is within the voltage range specified by the card. (A control signal is sent to the transmission line via the input/output buffer 16 to control the lighting of the corresponding lighting load.) In this case, the dimming of the lighting load is set to the maximum dimming level of 20.
% brightness to 100% brightness, and within this range, the level of dimming determined by proportional distribution of the upper and lower voltage limits, for example 10%.
Incremental dimming level, 20, 30, 40, 50, 60, 70, 80,
Dimming levels of 90% and 100% are set, and the dimming level is adjusted to whichever is closest to the level determined by proportional distribution. If the upper limit voltage of the sensor output specified by the card is exceeded, 20
% dimming (when the lower limit voltage is exceeded, it is set to 100% dimming. Therefore, the light sensor output is set to 100% dimming when the card exceeds the specified upper and lower voltage limits. If the voltage is in the middle, the dimming will be set using the proportional distribution above.In other words, the procedure for calculating the dimming level when the voltage is 3V is to calculate the dimming percentage by subtracting 20 from 100, which is 80, and the voltage. V1
From minus 3, which is obtained by subtracting 4 from , the dimming change rate with respect to voltage increase is minus 80/3, so y is the dimming level and x is the voltage, then y=80/3x+
Substituting 100 for y and 1 for x, b = 380/3
Therefore, by substituting x=3 again at y=80/3*x+380/3, y=46.66 is derived,
For example, it is incremented by one digit and turned on at 50% dimming level. ) If the output of the optical sensor is higher than the upper limit voltage specified by the card, the processor 10
turns off the corresponding lighting load, and sets the dimming to 100% if the optical sensor output is lower than the lower limit voltage. Note that the optical sensor may be provided corresponding to each terminal, or may be provided for each group including a plurality of terminals.

[Effect of the invention] In the present invention, the light reception level setting of the optical sensor is set to 2.
It is easy to do this all at once from the main control panel, and even if the weather is gradually changing from cloudy to sunny, the conventional model allows you to set the light reception level to a certain stage. However, in the present invention, there are two levels of light reception level, and when the light reception level is at an intermediate value between the upper and lower limits, the upper limit value Since dimming control is performed at the level determined by proportional distribution of the upper limit value and the lower limit value, sudden changes in illumination are prevented when the received light value gradually exceeds the upper limit value of the received light level or falls below the lower limit value of the received light level. It can be suppressed. Furthermore, by adjusting the difference between the upper limit value and lower limit value using the setting section, the operation is similar to that of a conventional 1-level light receiving sensor.
Alternatively, the rate of change in dimming according to the rate of change in the amount of light received by the light receiving sensor can be varied as desired.

[Brief explanation of the drawing]

FIG. 1 is a block circuit diagram showing the configuration of a lighting control system according to an embodiment of the present invention, and FIG. 2 is a plan view showing an example of a card forming a part of the setting section used in the system shown in FIG. , and Figure 3 is the first
FIG. 2 is a block circuit diagram showing the internal configuration of the main operation panel in the system shown in the figure. 1; Main operation panel, 2; Transmission panel, 3-1, 3-2,
..., 3-n; Terminal, 4; Lighting load, 5-1,
5-2, ..., 5-m; optical sensor, 6; setting section (card reader), 10; processor, 11; input circuit, 12; multiplexer, 13; AD converter, 14, 15; input buffer, 16; Input/output buffer.

Claims (1)

[Claims] 1 Equipped with a main operation panel, a plurality of terminals connected to the main operation panel via transmission lines and each connected to one or more lighting loads, and a plurality of optical sensors, and receiving control signals from the main operation panel. In a lighting control system that performs lighting control operations for each lighting load by transmitting information, the main operation panel is provided with a setting unit and a processor for establishing an upper limit value and a lower limit value of a received light level within the output range of the optical sensor. , this processor outputs a dark lighting control signal of a certain level when the actual output level of each optical sensor exceeds the upper limit value of the received light level specified by the setting operation of the setting section, and lowers the lower limit value of the received light level. When the received light level is at an intermediate value between the upper and lower limit values, a bright lighting control signal is output at a certain level, and when the received light level is at an intermediate value between the upper and lower limit values, a dimming control signal at a level determined by the proportional distribution of the upper and lower limit values is output. A lighting control system characterized by controlling lighting of a lighting load.