JPS63150886A - Dimmer - 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 The present invention relates to a light control device.

BACKGROUND ART A light control device used on a theater stage, etc., has a plurality of lighting loads 1a and 1b, as shown in FIG.

(a plurality of dimming units as means for individually energizing power, corresponding to 1c, . and a dimming signal sl +92 corresponding to the individual brightness of lighting load 1.
, s3, . The amount of power applied to the lighting load 1 of the dimming unit 2 is controlled by the output level of the dimming signal S derived from the dimming control device 3, and the desired lighting effect is achieved. It is an attempt to obtain.

Normally, the dimmer controller 3 is stored and distributed in the dimmer controller 4! 1, and the individual lighting loads 1a, 1b,
The brightness of lc, . . . is set in advance.

In such a prior art light control device, it is necessary to match the input level of the light control unit 2 and the output level of the light control device 3, and as shown in FIG.
For example, the output level of the dimming signal of the dimming control device 5a is O~
If it is within the IOV range, the specified input level of the corresponding dimming unit) 6a must also be 0 to 10V, and the virtual #i
If a mismatch occurs in the mutual input and output levels due to the correspondences shown in a and b, the dimming unit 6 will not follow the dimming signal level set by the dimming controller 5, and the desired lighting effect will not be obtained. The problem arises that it cannot be done.

The level range of the signal output level of the light control device 5 is O~
IOV, 0■~12V, OV~5V, or O■~-
There are various types, such as those with different signs such as 5V, and the range of the input level of the dimming unit 6 is also the same. Therefore, a dimmer operating device that can control a dimmer unit, or a dimmer unit that is connected to a certain dimmer operating device, must handle the same signal level, that is, the same signal system. There is a constraint that
It was inconvenient.

In order to eliminate such inconvenience, as shown in Figure vJ9, between the dimming operation device 5a and the dimming unit) 6b,
intervening an interface 7 as a signal conversion means,
A method has been proposed to convert the signal level and match both signal levels, but conventionally, the input level and output level of such an interface 8 are fixed, and the dimmer unit and dimmer operation In addition, creating an interface that matches the interrelationships between all the dimmer controls and dimmer units included in the control console requires a great deal of effort and time.
There was a problem that production costs were high.

OBJECTIVES Therefore, an object of the present invention is to solve the above-mentioned problems and provide a dimmer device in which dimmer operators with different signal systems and dimmer units can be arbitrarily connected. .

Embodiment FIG. 1 is a block diagram showing the electrical configuration of a light control device according to an embodiment of the present invention.

The light control device 11 has a plurality of lighting loads 16a, 16b, 1
6c, . Light control device 12a, 12b, 12c,..., 1
2n (indicated by reference numeral 12 when collectively referred to as 12) and the above-mentioned dimming signals are individually received, and the level of the dimming signal over the first change range is linearly adjusted over the second change range. Interfaces 13m, 13b, and 13c are signal converters that convert and output electrical signals having levels that change.
, -, 13n (indicated collectively by reference numeral 13), and a plurality of power-energizing lights for one lighting load so that the brightness corresponds to the second change range of the electrical signal input from the interface 13. The light control unit 12 and the interface 13 are connected to the control console 1.
It is stored and arranged in 4.

In the f:lS1 diagram, for example, the dimming operation device 12a1 interface 13a1 dimming unit) 15a with the same suffix a is one dimming system! a is formed, thereby controlling the dimming of the lighting load 16a with the same suffix a. Next, one interface 13a is illustrated in FIG. fjrJ2, and its operation will be explained with reference to FIG. 1 as well.

FIG. 2 shows the interface 13 used in this embodiment.
It is an electric circuit diagram of a. The interface 13a is provided with a first changeover switch SWI as an input level setting means, a second changeover switch SW2 as an output level setting means, and a sign reversal switch Sw3, and a first changeover switch SW1 and a second changeover switch SW2. The input resistance Ril~Ri4
and the output resistors Rol to Ro4 are selectively connected to change the amplification degree of the operational amplifier A1, and the first signal level Vi inputted from the dimming operation device 12 and the second signal outputted to the dimming unit 15 are changed. Level VorJl to Vo=K ・V i
...The proportionality constant K is determined so that the relationship (1) holds true.

Note that the sign inversion switch SW3 changes the sign of the input signal Vi and the input signal required by the dimming unit 15a (that is, the output signal V
o) When the sign is different from the sign of c3 shown in the diagram,
Switching from e1 to c3-e2, first operational amplifier 3
This is for guiding the output of A1 to the 12 operational amplifier A2 and equalizing the signs using its inverted output.

In FIG. 2, the first changeover switch SW1, which is the input level setting means, selects the resistor Ro2, and the second changeover switch SW2, which is the output level setting means, selects the resistance Ri2.
If you select , then the amplification degree of operational amplifier A1, and therefore the input signal level Vi and output signal level ■0, are Vo=[R1/(Ri2+R1)] ・[1+ <R2/ Ro2 )]・Vi ・・・(
2). Here, if we set R1=R2=R and further set the resistance values of resistance Ri2 and resistance Ro2 to be equal to resistance R, the second equation becomes Vo''Vi, and the first
The case where =1 is realized in the formula, for example, the input level Vi=
The output level Vo=10V for 10V, and the dimming operation device 12 and dimming unit 15 having the same signal system can be connected to each other.

Further, the first changeover switch SW1 changes the resistance Rol to the second changeover switch SW1.
If the changeover switch SW2 selects each resistor Ri2 and sets the resistor Rol = R/3, then Vo = 2v1, and the case of =2 in the first equation is realized, for example, the output for an input level Vi = 5V. This becomes an interface 13a that converts the level Vo to 10V, and realizes a connection mode for one different signal system.

In this way, the resistances Ril, Ri2, Ri3, .
... (indicated by reference mark Ri when generic) and resistance R
ol, Ro2, Ro3, .
By selecting the resistor R1 and the resistor Ro using the second changeover switch SW2, which is an output level setting means, the dimming operation device 12 and the dimming unit 15, which have different signal systems, can be connected without interfering with each other (
Can be connected. Table 1 shows the values of the resistance Ri and the resistance Ro set in advance in this way.

Table 1 Since the output level of the dimmer operator 12 used in the dimmer 11 and the input signal level of the dimmer unit 15 are both known, one dimmer operator 12n (n=1.2... 3
, . . . , the same applies below) (that is, the input level Vi of the interface 13n) is, for example, O to 5■, and the input level of the Ikegata dimming unit) 15n (that is, the output level Vo of the interface 1311) is O~12V, find the resistance Rol corresponding to the input level Vi''5V from Table 1 (Rol
= 3R), then find the resistance Ri3 corresponding to the output level Vo=12\7 (R13=3/2R), and change the resistance Ri3. R.

1 and connect it.

In this way, the interface 13n according to this embodiment
By interposing the light control device 12 and the light control unit 15a between the light control fabricator 512n and the light control unit 15a, it is possible to connect the light control device 12 and the light control unit 15 of different signal systems very easily. Although the interface 13a of this embodiment has four input/output levels that can be set, it is needless to say that the number is not limited to four.

FIG. 3 is an electrical diagram of the interface of the pond embodiment of the present invention. FIG. 3 is similar to FIG. 2, and corresponding parts are provided with the same reference numerals. What should be noted is that n (n=1) is applied to the resistors Rxl to R based on the combination of the input level Vi and the output level Vo in advance.

2.3. ..., the same applies hereinafter) and resistances Ryl to Ryn
are set in advance, and these resistors are connected to one selector switch SW.
4 and connected to the input terminal of the operational amplifier A1 of Pt51. This allows the user to determine the combination of the output signal level of the dimmer control device and the input signal level of the dimmer unit using Table 2 or Table 3, taking into account the signs.
All you have to do is select from the table and set the changeover switch to the predetermined position, which simplifies the operation.

(Left below) Table 2 [When the input voltage and output voltage have the same sign (SWI is from n+1 to
α=5, Rx=R, Ry=R (same decoding) Table 3 [When input voltage and output voltage have different signs (swi selects one from 1 to n) α=5, Rx=R, Ry=R (same as decoding) Regarding the first operational amplifier WA3, if the input and output signals have different signs, the resistors Rxl to Rxn are selected, and if they have the same signs, the resistors Rxl to Rxn are selected. Since the resistors Ryl to Ryn are selected for , the code conversion changeover switch used in the previous embodiment becomes unnecessary in this embodiment. That is, when the input and output signals have opposite signs, the input signals are connected to the inverting input terminal of the fjS1 operational amplifier A1, so that the polarity is inverted and output to the line a.

Furthermore, if the input/output signals are of equal sign, they are connected to the non-inverting input terminal of the first operational amplifier A1, so that signals of the same polarity are sent to the line J? It is derived to a. When the input signals have opposite signs, the level ■a derived from line node a is Va=-(Rxn/R6)・Vi-(3
) in the case of equal sign, Va=[R6/(R6+Ryn)]Vi −(4)
In both cases, the signals derived from line a have equal signs. However, for inverting amplification and non-inverting amplification width, operational amplifier A
Since the gains of 1 are different, the values of the resistors Rxn and Ryn are changed so that the output levels are equal when the input signal level has the same absolute value.

The signal level Va derived from the line node a is amplified by the fjtJ2 amplifier A2, and the output level Vo is
=[1+α/21・Va (5) However, α represents the gain of the second operational amplifier A2, and in this embodiment, the resistors R8, R9, R1O around the tpJ2 operational amplifier A2 are set in advance so that α=5. , R11 are determined so that R8=R9=R10=R and R11=aR.

As described above, in this embodiment, the relationship between the input signal level Vi and the output signal level ■o is determined by one changeover switch SW4, which simplifies the operability and allows dimming of different signal systems. The controller and the light control unit can be connected to each other without any trouble using a simple original.

FIG. 4 is an electrical circuit diagram of the interface 23 of a further embodiment of the present invention. The interface 23 shown in FIG. 4 has the same circuit configuration as the interface 13a shown in the second drawing, and corresponding parts are given the same reference numerals. What should be noted in this embodiment is the changeover switches SWI and SW2 used for input/output level setting shown in FIG.
And instead of the changeover switch SW3 for code conversion, multiplexers 28a and 28b are implemented, each of which is realized by a plurality of channel analog switches, etc.
, 28c.

The multiplexers 28a to 28c are all controlled by a microprocessor or the like: In response to a command from the B unit 26, an input level setting control signal is sent to the first multiplexer 28a via the line B2a, and the first multiplexer 28a is connected to resistors Ril to Ri by a control signal.
A desired resistor Ri is selected from n and connected to line So1. Similarly, the second multiplexer 28b is connected to line B2b.
The control signal sent through the resistor Rol~R
Select a desired resistor Ro from the ON state and connect it to the ground line g.

Due to this! @1 The amplification degree of operational amplifier A1 is determined,
It is derived to line na. Also, the third multiplexer 28
c connects the output line 12 and line nb if the input/output signals have different signs, and converts the output of the first operational amplifier A1 to the After inverting the sign through the operational amplifier A2, the signal is output.

The m control unit 26 receives the output of a dimming operation device (not shown), that is, the input level Vi of the interface 23, and the input of a dimming unit (not shown), that is, the interface 23.
Data regarding the output level Vo and the sign of the signal are read from the random access memory 25 and input to the multiplexers 28a to 28c to perform the above-described operations. Furthermore, predetermined data is written and stored in the random access/memory 25 in advance by an input means realized by a keyboard or the like. In this way, one dimming system can be controlled by a predetermined program, and by arranging the required number of interfaces according to this embodiment, programming of the entire dimming device can be realized.

FIG. 5 is an electrical circuit diagram of the interface of the pond embodiment of the present invention. Inter 7 second 3 shown in Figure 5
3 has the same circuit configuration as the interface 17 shown in the third figure, and corresponding parts are given the same reference numerals. What should be noted in this embodiment is the interface 17 shown in the third diagram.
In place of the changeover switch SW4 used in the above, a multiplexer 34 capable of switching a plurality of channels is used.

The selection of the resistors Rxl to Rxn and the resistors Ryl to Ryn by the multiplexer 34 is performed by an input level setting signal input via the line B2, and this input level setting signal is controlled by the control g2[3 similar to that shown in FIG. 4 above]. h
It is derived from a single control unit (not shown).

As a result, the interface 33 according to this embodiment is
Setting the input/output level and equalizing the sign of the signal can be achieved by one multiplexer, and the device can be made smaller.

FIG. 6 is a block diagram showing the electrical configuration of a light control device according to another embodiment of the present invention. What should be noted in this embodiment is that the light control device 51
A plurality of dimming operation devices 41a to 41n (indicated by reference numeral 41 when collectively referred to as 41) forming the line! 11~J? n
are sequentially selectively connected to an interface 43 by a PIS1 multiplexer 42, and the outputs level-set by the interface 43 are individually and sequentially connected to a line '7H11 by a second multiplexer 44.
~ line gn.

Further, the signals individually outputted to the lines gl 1 to 8n are sample-and-hold circuits 45a to 45n.
(indicated by the reference numeral 45 when collectively referred to) during the above timing period, and during the holding period, the light control units 46a to 46
n (generally referred to as reference numeral 46) are sequentially connected. First multiplexer 42
The selection command to the second multiplexer 44 is sent to the input channel selection unit 48a in the control unit 48 through lines B1 and B3, respectively.
48e, and an input/output level setting signal for setting the input/output signal level between each dimming operation device 41 and the dimming unit 46 is sent from the input/output level setting section 48b to the interface 43 via line B2. given to.

Effects As described above, according to the present invention, there is provided a dimming signal generating means for deriving a dimming signal having a level that changes over a first variation range corresponding to the brightness of the lighting load, and By electrical signals spanning. power energizing means for receiving the dimming signal and converting the level of the dimming signal over a first range of variation into an electrical signal having a level that varies linearly over a second range of variation; A plurality of output signal conversion means are interposed. As a result, it is possible to connect the dimming signal generation means and the voltage energizing means, which have different dimming signal systems, without any problems, and the restrictions on use seen in the prior art are removed, and the operability is improved and simplified. will be realized.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the electrical configuration of a light control device 11 according to an embodiment of the present invention, FIG. 2 is an electrical circuit diagram of an interface 13a used in this embodiment, and FIG. FIG. 4 is an electric circuit diagram of the interface 23 of the further embodiment of the present invention, and FIG. 5 is an electric circuit diagram of the interface 33 of another embodiment of the present invention. FIG. 6 is a block diagram showing the electrical configuration of a light control device 51 according to another embodiment of the present invention, FIG. 7 is a block diagram showing the electrical structure of a light control device according to the prior art, and FIGS. 8 and 9 is a diagram showing the prior art. 1...Lighting load, 2,6,15.46...Dimmer unit, 3,5,12.41...Dimmer control device,
4,14.40...Operation console, 11...Dimmer, 1
3a, 17...Interface, A1-A4...
Operational amplifier, SWI~SW4... selector switch

Claims (1)

[Scope of Claims] A lighting load; a dimming signal generating means for deriving a dimming signal having a level that changes over a first variation range corresponding to the individual brightness of the lighting load; a plurality of signal converting means that receives the signal, converts the level of the dimming signal over the first change range into an electric signal having a level that changes linearly over the second change range, and outputs the electrical signal; A light control device comprising power energizing means for receiving an electrical signal and energizing a lighting load with power so that the brightness corresponds to the electrical signal that varies over a second range of variation.