JP3365253B2 - Dimming control system - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dimming control system for controlling dimming of a lighting load.

[0002]

2. Description of the Related Art A conventional dimming control system will be described with reference to FIG. FIG. 3 is a block diagram showing the configuration of the dimming control system.

The dimming control system controls the luminaire so that the illuminance on the desk surface in the room is constant, and as shown in FIG. 3, the dimming control device 1, the illuminance measuring terminal 2, the dimming control. The output terminal 3 and the lighting fixture 4 are included.

The illuminance measuring terminal device 2 is for measuring the illuminance on the desk surface, and transmits the measured illuminance to the dimming control device 1 as the illuminance value S1. The illuminance measuring terminal 2 outputs the most accurate value when it is installed on the desk top surface, but it is usually installed on the ceiling surface, etc. in consideration of wiring difficulty and changes in the layout of the room. ing. Therefore, the illuminance measuring terminal 2 measures the illuminance on the desk top surface by the reflected light from the desk top surface. Therefore, the illuminance value S1 output from the measurement terminal device 2 is different from the actual illuminance on the desk surface, and the product of the illuminance value S1 and the correction coefficient A described later is close to the actual illuminance.

Further, the illuminance measuring terminal 2 is, for example, 100
Since the illuminance can be detected as a step value and the resolution, which is a value indicating one step, is 20 [lux], 0
It can measure from [lux] to 2000 [lux] in steps of 20 [lux]. This measurable range is called a range, and the range is determined by the resolution (20 [lux] in this example) if the number of detectable steps is fixed.

The dimming control device 1 has a transmission / reception unit 1a, a control unit 1b, a correction coefficient storage unit 1c, a correction coefficient setting unit 1d, and a display unit 1e.

The transmitter / receiver 1a outputs the illuminance value S1 received from the illuminance measuring terminal 2 to the controller 1b, and transmits the dimming output value S2 input from the controller 1b to each dimming output terminal 3. .

The control unit 1b controls the estimated illuminance value M based on the illuminance value S1 and the correction coefficient A so that the illuminance on the desk surface in the room where the lighting fixture 4 is installed becomes a preset target illuminance value N. The estimated illuminance value M and the target illuminance value N are calculated.
The light control output value S2 is determined from the above, and the light control output value S2 is output to the transmitting / receiving unit 1a (hereinafter, this operation is referred to as constant illuminance control). The dimming output value S2 represents what [%] of the maximum dimming output the lighting device 4 should have, with the maximum dimming output of the lighting device 4 being 100 [%].

The correction coefficient storage unit 1c stores a correction coefficient A representing the ratio between the illuminance value S1 and the actual illuminance on the desk surface.

The correction coefficient setting unit 1d is for changing the correction coefficient A. The display unit 1e displays the correction coefficient A, the estimated illuminance value M, the target illuminance value N, and the like, and is configured by a CRT display or a liquid crystal display.

The dimming output terminal 3 has a duty ratio signal S based on the dimming output value S2 transmitted from the dimming control device 1.
3 is output to the luminaire 4. The lighting fixture 4 is lit with brightness based on the duty ratio signal S3.

The dimming control system configured as described above operates as follows.

First, during normal operation, the illuminance measuring terminal device 2 measures the illuminance on the desk surface by the reflected light to determine the illuminance value S.
1 is transmitted to the dimming control device 1. The control unit 1b of the dimming control device 1 calculates the dimming output value S2 so that the estimated illuminance value M obtained by multiplying the illuminance value S1 by the correction coefficient A matches the target illuminance value N. For example, the estimated illuminance value M is 350 [lux]
If the target illuminance value N is 700 [lux] and the current dimming output value is 30 [%], the estimated illuminance value M of 350 [lux] is the target illuminance value N of 700 [lux]. Therefore, the control unit 1b determines the new dimming output value S2 to be 60%, which is twice the current dimming output value.

Then, the control section 1b controls the dimming output value S2.
To the dimming output terminal 3. The dimming output terminal 3 is
The duty ratio signal S3 based on the dimming output value S2 is output to the lighting fixture 4, and the lighting fixture 5 outputs the duty ratio signal S3.
Lights based on.

As described above, the dimming control device 1 performs the illuminance constant control so that the illuminance on the desk surface is always constant.

Next, the adjustment of the correction coefficient A will be described. Since the illuminance measuring terminal device 2 measures the illuminance by the reflected light from the desk top surface, if the reflectance of the desk top surface or the like differs due to a layout change or the like, a different correction coefficient A may be required. . That is, even if the illuminance constant control is performed so that the target illuminance value N and the estimated illuminance value M match, if the estimated illuminance value M is different from the actual illuminance on the desk surface, unintended dimming output Therefore, it will be controlled to be constant.

Therefore, first, the first worker carries the wireless device and the illuminance meter to the desk in the room provided with the illuminance measuring terminal 2 and the like, and measures the illuminance B on the desk surface. The first worker informs the second worker of the illuminance B to the second worker in a manager room or the like in which the dimming control device 1 is installed by a wireless device. The second worker obtains the ratio between the illuminance value S1 output from the illuminance measuring terminal 2 displayed on the display unit 1e and the illuminance B to calculate the correction coefficient A. Then, the second worker inputs the correction coefficient A by the correction coefficient setting unit 1d to input the correction coefficient storage unit 1c.
To memorize. By obtaining the estimated illuminance value M using the correction coefficient A adjusted in this way, the estimated illuminance value M and the actual illuminance B become substantially equal.

As described above, the correction coefficient A is adjusted, the control unit 1b reads the correction coefficient A from the correction coefficient storage unit 1c, and the illuminance constant control is performed using the correction coefficient A.

[0019]

However, the above dimming control system has the following problems.

That is, since the actual illuminance in the room can be changed within a range of approximately 0 [lux] to 2000 [lux] (hereinafter referred to as a general illuminance range), the estimated illuminance value M is 0 [lux]. It falls within the range of up to 2000 [lux]. Therefore, if the correction coefficient A is set to "2", the estimated illuminance value M is 0 [lux] to 2000.
Since it falls within the range of [lux], the value of the illuminance value S1 actually transmitted from the illuminance measuring terminal device 2 is 0 [lux] to 1
It will be in the range of 000 [lux].

Therefore, the illuminance measuring terminal device 2 is 0 [lux]
Despite having the ability to detect a range of up to 2000 [lux] in 100 steps, 0 [lux] to 10
It means that the illuminance is detected in 50 steps in the range of 00 [lux].

On the other hand, in the dimming control device 1, the estimated illuminance value M
Is calculated by multiplying the illuminance value S1 and the correction coefficient A, for example, if the correction coefficient A is “2”, if the illuminance value S1 is increased by 20 [lux] in one step, the estimated illuminance value M becomes It will increase by 40 [lux]. That is, the dimming control device 1
The resolution at is a value obtained by multiplying the resolution of the illuminance measuring terminal 2 by the correction coefficient A.

Therefore, when the correction coefficient A becomes large, the range of the illumination measurement terminal 3 is not effectively used, the resolution in the dimming control device 1 is lowered, and precise illumination constant control cannot be performed. there were.

The present invention has been made in order to improve the above-mentioned problems, and an object of the present invention is not to reduce the resolution of the illuminance in the dimming control device even if the correction coefficient becomes large, so that the precision An object of the present invention is to provide a dimming control system capable of performing constant illumination constant control.

[0025]

In order to solve the above problems, the present invention provides an invention according to claim 1 in which the ambient illuminance is measured by a predetermined range and the measured illuminance is used as the illuminance value. Illuminance measurement terminal device to output, a control unit that calculates an estimated illuminance value from the illuminance value and a correction coefficient, and determines a dimming output value from the estimated illuminance value and a predetermined target illuminance value, and a correction coefficient that sets the correction coefficient A dimming control device including a setting unit,
In a dimming control device having a dimming output terminal device that outputs a signal for controlling a dimming output of a lighting fixture based on the dimming output value, the illuminance measuring terminal device, based on the correction coefficient, It has a range setting unit for setting a range.

According to a second aspect of the present invention, the range setting section is such that the range of the estimated illuminance value calculated from the illuminance value and the correction coefficient is a general illuminance range based on the correction coefficient. It is characterized by setting a range for outputting a value.

[0027]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention is shown in FIGS.
Will be explained. FIG. 1 is a block diagram showing the configuration of a dimming control system. FIG. 2 is a block diagram showing the configuration of a dimming control system having a plurality of lighting fixtures and the like. In addition,
In FIG. 1, the same reference numerals are given to the same parts as those of the dimming control system described in the above-mentioned conventional technique, and detailed description of the same parts will be omitted.

The dimming control system of the present embodiment shown in FIG. 1 is different from the dimming control system described in the above-mentioned prior art in that it has the following features.

First, when the correction coefficient A is newly set, the correction coefficient setting unit 1d stores the correction coefficient A in the correction coefficient storage unit 1c and outputs it to the transmission / reception unit 1a.
The transmission / reception unit 1a is configured to transmit the correction coefficient A to the illuminance measurement terminal device 2.

Secondly, the illuminance measuring terminal device 2 is provided with a range setting section 5 for setting the illuminance detection range based on the correction coefficient A.

The range setting section 5 is based on the correction coefficient A.
The illuminance value S such that the range of the estimated illuminance value M calculated from the illuminance value S1 and the correction coefficient A is the general illuminance range.
The range for outputting 1 is set. Specifically, when the illuminance measuring terminal 2 receives the correction coefficient A, the range setting unit 5 sets the default resolution R to the correction coefficient A.
The value divided by is the new resolution S.

In the present embodiment, the illuminance measuring terminal 2 has the capability of measuring illuminance in 100 steps and the default resolution R is 20 [lux], so the default range T is 0. [Lux] to 2000 [lux], which matches the general illuminance range. If the correction coefficient A received by the illuminance measuring terminal device 2 is "2",
The range setting unit 5 has a default resolution R of 20 [lu
x] is divided by "2" and 10 [lux] is added to the new resolution S
And Therefore, the new range U based on the resolution S is 0
[Lux] to 1000 [lux]. That is, the illuminance measuring terminal device 2 sets the illuminance to 0 [lux] to 1000 [lux].
In the range of, the detection is performed in 100 steps in steps of 10 [lux].

In another example, the same illuminance measuring terminal device 2 is used.
If receives a correction coefficient A whose value is "4",
The new resolution S becomes 5 [lux] and 0 [lux] to 50
It is detected in 100 steps in steps of 5 [lux] in the range of 0 [lux].

The operation of the dimming control system configured as above will be described. First, when the correction coefficient A is not adjusted yet and is "1", the illuminance measuring terminal device 2 detects it in 100 steps with the default resolution R of 20 [lux], so that the range is 0 [lux. ] ~ 200
It becomes 0 [lux]. Then, the illuminance measuring terminal device 2 measures the illuminance on the desk surface with the range and transmits the illuminance value S1 to the dimming control device 1.

The control section 1b of the dimming control device 1 calculates the estimated illuminance value M by multiplying the illuminance value S1 by "1" which is the correction coefficient A. Therefore, the range of the estimated illuminance value M is 0
It is [lux] to 2000 [lux], which matches the general illuminance range, and the resolution is 20 [lux].

The control unit 1b calculates the dimming output value S2 from the estimated illuminance value M and the target illuminance value N to obtain the dimming output terminal device 3
Send to.

Next, due to changes in the layout of the room, etc.
The value of the correction coefficient A is "2" by the method shown in the above-mentioned conventional technique.
If the operator inputs the correction coefficient A into the correction coefficient setting unit 1d, the correction coefficient setting unit 1b causes the correction coefficient A to be changed.
Is output to and stored in the correction coefficient storage unit 1c,
The correction coefficient A is output to the transmitter / receiver 1a. Transmitter / receiver 1a
Transmits the correction coefficient A to the illuminance measuring terminal 2.

When the illuminance measuring terminal device 2 receives the correction coefficient A, the range setting section 5 divides the default resolution R of 20 [lux] by the value of the correction coefficient A of "2" to obtain 10
Let [lux] be the new resolution S.

The illuminance measuring terminal 2 measures the illuminance with the resolution S of 10 [lux]. Therefore,
The value of the illuminance value S1 output from the illuminance measuring terminal device 2 is 0 [lu
The range is from x] to 1000 [lux] in 100 steps in 10 [lux] steps. The illuminance measuring terminal device 2 measures the illuminance on the desk surface in the range and transmits the illuminance value S1 to the dimming control device 1.

The control unit 1b of the dimming control device 1 calculates the estimated illuminance value M by multiplying the illuminance value S1 and the correction coefficient A of "2". Therefore, the range of the estimated illuminance value M is 0
It is [lux] to 2000 [lux], which matches the general illuminance range, and the resolution is 20 [lux].

The control unit 1b calculates the dimming output value S2 from the estimated illuminance value M and the target illuminance value N, and the dimming output terminal 3
Send to.

As described above, since the range setting section 5 sets the range according to the correction coefficient A, even if the correction coefficient A is different, the estimated illuminance value M in the dimming control device 1 The resolution does not decrease, and the illuminance measuring terminal device 2 can always detect the value in 100 steps.

In the present embodiment, the default resolution R of the illuminance measuring terminal device 2 is described as 20 [lux], but the present invention is not limited to this.

Further, in the present embodiment, the range setting unit 5 of the illuminance measuring terminal 2 obtains a new resolution S by dividing the default resolution R by the correction coefficient A, but the present invention is not limited to this. However, the resolution R may be used as long as the range is determined based on the correction coefficient A.
May be divided by the correction coefficient A to add a predetermined offset.

In this embodiment, the dimming control device 1 is also provided.
, The default correction coefficient A is "1", but the present invention is not limited to this. For example, the default correction coefficient A is set to "5" and The ratio with the default correction coefficient A may be transmitted to the illuminance measurement terminal device 2, and the illuminance measurement terminal device 2 may use this ratio to set a new range.

In the present embodiment, each of the dimming output terminal 3 and the illuminance measuring terminal 2 is described as one, but the number is not limited to one, and as shown in FIG. A system having a plurality of these items may be used.
In this case, the dimming control device 1 grasps the correspondence relationship between each dimming output terminal device 3 and the illuminance measuring terminal device 2, and the correction coefficient A
May be held for each lighting measurement terminal 2.

[0047]

Since the dimming control system of the present invention is constructed as described above, in the invention of claim 1,
Since the range setting unit sets the illuminance detection range based on the correction coefficient, even if the correction coefficient is different, the resolution of the estimated illuminance value in the dimming control device does not decrease, and precise illumination is possible. An effect that a dimming control system capable of performing constant control can be provided.

According to the second aspect of the present invention, the range setting unit uses the correction coefficient to calculate the estimated illuminance value from the illuminance value and the correction coefficient. Since the range for outputting is set, even if the correction coefficient is different, the resolution of the estimated illuminance value in the dimming control device does not deteriorate, and precise dimming control that can perform constant illumination control can be performed. The effect that a system can be provided is produced.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a dimming control system of the present invention.

FIG. 2 is a block diagram showing a configuration of a dimming control system having a plurality of lighting fixtures and the like.

FIG. 3 is a block diagram showing a configuration of a conventional dimming control system.

[Explanation of symbols]

1 Dimming control device 1b Control unit 1d Correction coefficient setting section 2 Illuminance measurement terminal 3 dimming output terminal 4 lighting equipment 5 Range setting section

Claims (2)

(57) [Claims] 1. An illuminance measuring terminal device for measuring an ambient illuminance in a predetermined range and outputting the measured illuminance as an illuminance value; and an estimated illuminance value calculated from the illuminance value and a correction coefficient, and the estimated illuminance value and a predetermined illuminance value. A dimming control device including a control unit that determines a dimming output value from a target illuminance value, and a correction coefficient setting unit that sets the correction coefficient, and a dimming output of a lighting fixture based on the dimming output value. In a dimming control device having a dimming output terminal device that outputs a signal for controlling, the illuminance measuring terminal device includes a range setting unit that sets the range based on the correction coefficient. Dimming control system. 2. The range setting unit sets a range for outputting an illuminance value such that an estimated illuminance value calculated from the illuminance value and the correction coefficient is a general illuminance range based on the correction coefficient. The dimming control system according to claim 1, wherein: