JPH0332877B2 - - 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 in which a sensor output range for performing dimming control using a sensor can be freely set in association with a required lighting load.

(Prior Art) Conventionally, lighting control 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. The sensitivity, output level, etc. of each optical sensor are corrected using the variable resistor or the like in accordance with the situation of the location where each optical sensor is installed. For example, Japanese Patent Application Laid-Open No. 56-41695 or Japanese Patent Publication No. 52-20068 uses such a light sensor to control window illumination.
It is well known as shown in the publication No. Window lighting control uses an optical sensor to measure the amount of outside light, and when the amount of outside light increases, the lighting load near the window is controlled to be darker than the lighting load that is not near the window to match the brightness of the window due to daylight. This is a technology that optimizes indoor lighting accordingly.

However, in this conventional type, only rough sensor control is possible, so the lighting level in a certain lighting space (e.g. near a window) may be different from other lighting spaces (e.g. areas other than the window in the same room) and may give a sense of discomfort. Become.

(Problems to be Solved by the Invention) In view of the above-mentioned problems with the conventional type, an object of the present invention is to provide a lighting control system that outputs the output of a light sensor in correspondence with the lighting control range determined for each lighting load. An object of the present invention is to provide a lighting control system that is provided with a level setting section for specifying a range, can freely set the lighting level in a certain lighting space, and does not cause a sense of discomfort.

[Structure of the Invention] (Means for Solving the Problem) The present invention provides a main operation panel, a plurality of dimmers connected to the main operation panel via a transmission line, and each connected to one or more lighting loads. In a lighting control system that is equipped with a terminal device having a function and an optical sensor, and performs an illuminance control operation for each lighting load by transmitting a control signal from the main operation panel, the main operation panel is provided with a level setting section, The present invention is characterized in that dimming control is performed by associating the output level range of the optical sensor specified by the level setting section with the illuminance control range determined for each lighting load.

(Function) With this, each lighting load can be dimmed and controlled for each specified output level range.

(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 connected to the main operation panel 1. one or more lighting loads 4;
and optical sensors 5-1, 5-2,..., 5-m, etc. The main operation panel 1 also includes a processor, a sensor control section, etc. (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. In other words, it is equipped with a circuit for turning on all lights, turning off the lights, and controlling the light. The illumination intensity of each lighting load can be controlled, for example, from 80% to 20% of the maximum illuminance.
This is done by adjusting the power flow angle in 10% increments using a thyristor or the like according to a control signal.

FIG. 2 shows the sensor control section provided in the main operation panel 1 in the system of FIG. 1 and the circuit configuration around it. The circuit shown in the figure includes a sensor control section 6, a timer 7, a timer setting section 8, a level setting section 9, and a memory section 10.

In the circuit shown in FIG. 2, outputs from each optical sensor, that is, analog voltages, are sequentially applied to the sensor control section 6 as analog inputs. Sensor control unit 6
generates a digital output indicating the illuminance of the lighting load corresponding to each sensor in response to the analog input, and this digital output becomes part of the control signal and is sent from the main operation panel 1 to each terminal to perform the desired dimming control. will be carried out. In this case, a range of analog input voltage is specified by the level setting section 9, and if the analog input from the optical sensor is within this range, dimming control of the corresponding lighting load is performed. Level setting section 9
has, for example, a keyboard, and is used to specify the analog input voltage range from the optical sensor.

That is, as shown in FIG. 3, the range of analog input voltage is set from 0.6V (point C) to 2V (D Assuming that the area up to point ) is set, the sensor control unit 6 generates a digital output by associating the range of this analog input with the dimming control range A to B of the lighting load in the first row near the window. Now, assuming that the dimming range of a certain lighting load is set from 80% (point A) to 20% (point B) of the maximum illuminance, when the analog input from the optical sensor is at point C, that is, 0.6V, it is 80%. The illuminance is controlled to be 20% when the analog input is at point D, that is, 2V. Here, when the analog input voltage is low, there is less daylight, and when the voltage is high, there is more daylight. When the analog input has an intermediate value between points C and D, the illuminance is distributed to any one of the ranges from point A to point B by proportional distribution. In addition, when it is less than 0.6V, all lights are on,
The light is turned off when the voltage is higher than 2V. In addition, the analog input range is set from 3V (C') to 3.8V (D') using the level setting unit 9 in association with another lighting load (for example, the lighting load in the second row near the window). In this case, this range is associated with the dimming control range A to B of the lighting load in the second row near the window.

Therefore, for example, if we consider a case where the amount of light received by the optical sensor gradually increases, the output of the optical sensor will change from 0V to
When the voltage is 0.6V, there is little daylight, so the lighting loads for both the first and second rows are fully lit. From 0.6V to 2V, the dimming level of the first row's lighting load gradually decreases from 80% to 20% due to proportional distribution, and the second row's lighting load remains fully lit. 1 from 2V to 3V
The lights in the second row are turned off, and the lights in the second row remain fully lit. From 3V to 3.8V, the 1st row is off, and the 2nd row is off.
In the rows, the dimming level gradually decreases from 80% to 20% through proportional distribution, and when the voltage is higher than 3.8V, the lights in both the first and second rows are turned off. In this way, the correspondence between the 80% to 20% illuminance control range determined for the lighting load and the output level range of the optical sensor can be determined for the first row by the window and the second row where the lighting load is installed. Since it is set according to the situation, detailed lighting control can be performed according to the amount of light received by the optical sensor.

In the circuit shown in FIG. 2, the timer 7 is used to provide an appropriate time difference between the analog input and the digital output, and the timer setting section 8 is used to set the counting time of the timer 7. . Further, the memory unit 10 temporarily stores data inputted by the level setting unit 9 until new data is inputted by the next operation.

[Effects of the Invention] As described above, according to the present invention, the output range of the optical sensor can be arbitrarily set in association with the lighting control range determined for the required lighting load by the level setting section. This makes it possible to arbitrarily and easily set changes in the dimming level of the lighting load in response to changes in the output level of the optical sensor, depending on the conditions of the location where the lighting load is installed, allowing for detailed lighting. For example, it is possible to control window lighting with less discomfort.

[Brief explanation of drawings]

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 block circuit diagram showing the sensor control unit used in the system of FIG. 1 and its surrounding circuits. , and FIG. 3 is an explanatory diagram showing the operation of the circuit of FIG. 2. 1... Main operation panel, 2... Transmission line, 3-1, 3-
2,...,3-n... terminal device, 4... lighting load, 5
-1, 5-2,..., 5-m... optical sensor, 6...
Sensor control unit, 7...Timer, 8...Timer setting unit, 9...Level setting unit, 10...Memory unit.

Claims (1)

[Claims] 1. A main operation panel, comprising a main operation panel, a plurality of terminals each having a dimming function connected to the main operation panel via a transmission line and connected to one or more lighting loads, and a light sensor; In a lighting control system that performs illuminance control operations for each lighting load by transmitting control signals from the main operation panel, the main operation panel is provided with a level setting section, and the output level range of the optical sensor specified by the level setting section is set. A lighting control system that performs dimming control in association with an illuminance control range determined for each lighting load.