JPS58142799A - 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] The present invention is a lighting lamp for a studio, a stage, etc., which remotely controls the dimming of the lighting lamp by transmitting an adjustment signal from a dimming control regulator (fader) using a power line. The present invention relates to a light control device.

In the conventional dimmer system for lighting lamps that uses power lines, when you press the button for changing the light intensity of the J lamp illuminated by the transmitting side controller, a digitally coded control signal is sent out to the power line. This is received on the receiving side and the dimmer of the illumination lamp is operated at a predetermined constant dimming change rate in accordance with the control signal from the push button. However, with this method, the dimming rate of change is constant, and changes in the amount of light cannot be controlled over time from the controller, so when used for lighting lamps in studios, stages, etc. The disadvantage is that they are either insufficient or cannot be used in practice. Depending on the location where the dimmer is used, such as a studio, stage, or horizon, the light intensity characteristics of the fader electrode for dimming will differ, so it is necessary to have a device with characteristics that match each installation location.
1. Due to the lighting lamps used and the configuration of their dimming control circuits, there is non-linearity in the light intensity characteristics of the fader electrode lamps, and they must be manufactured separately depending on the purpose and applicable equipment, so there are many product models. This has the disadvantage that manufacturing and adjustment are complicated.

The present invention solves the conventional drawbacks by adopting a method in which the dimming fader amount is digitally processed using the power line of the lighting lamp, and the processed signal is superimposed on the power line to control the lighting lamp. In addition to abolishing the conventionally necessary electric line for transmitting fader signals, the fader means installed on the transmitting side can be used to arbitrarily control the light intensity of the lighting lamps over time to provide lighting for studios, stages, etc. The effect can be fully demonstrated, and furthermore, the fader electrode lamp light intensity characteristics can be stored in memory in advance and can be selected and changed when the installation location is different, such as a studio or stage, or when the applied lighting equipment is different. It is an object of the present invention to provide a light control device that can obtain a fader electrode lamp light quantity characteristic suitable for the installation location, etc., and can be easily manufactured and adjusted.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a block diagram of a dimmer device according to an embodiment of the present invention, in which 1 is an operating device, 31 is a dimming controller, and these are power lines 90 and 90, respectively, which supply power to illumination lamps.
It is connected to the. The operating device 1 is composed of a fader means 2 having a digital fader 3 and a power synchronized transmitter 10, or the dimming controller 31 is composed of a power synchronized receiver 40,
It is composed of a curve forming memory 60, a digital dimming control circuit 70, a thyristor 80, and the like.

Below, the blocks in Figure 1 will be explained along with their operations.
The digital fader 3 divides the entire sliding range of the knob into 128 parts and outputs a 7-bit digital signal according to the knob position (fader amount), and is actually in the form of an 8-bit gray code. Output with .

The output of this digital fader 3 is converted into a serial signal by a serial conversion circuit 4, and this serial digital signal (3) is sequentially distributed and sent to gate circuits 12a and 12b alternately, and is also sent to a power supply synchronization signal generation circuit 16 and a basic pulse generation circuit. The electric power l11j is generated by the basic pulse generated in 17.
The gate circuits 12a and 12b are operated in synchronization with the power supply of the carrier wave frequency generating circuits 14a and 14b.
(100KHz), f.

(120KHz) carrier wave to the gate circuit 12&.

The carrier waves amplified by the amplifier/gate circuits 13a and 13b, which operate depending on the presence or absence (1 or 0) of the output signal of the output signal 12b, are superimposed on the power source of the power line 90 via the coupling capacitor 15.

In the transmitter 10, for example, the fader means 2 is
This operation is repeated by receiving a digital signal from. Here, the use of carrier waves of two different frequencies is to enable checking of the phase shift of the carrier wave with respect to the power supply, and also as a countermeasure against noise, and the frequency of these carrier waves is sufficiently higher than the power supply frequency of the illumination lamp. Also, use a frequency band other than the noise frequency band that is likely to be superimposed on the power supply.

18a, 18b and 19 use photocouplers (4) This is an isolated circuit.

As described above, the carrier wave superimposed on the power source of the power line 90 is transmitted to the dimming controller 31, and the frequency selection circuit 41
It is divided into KHz and 120 KHz and converted into a pulse train depending on the presence or absence of a carrier wave. This is then amplified by the amplifier circuit 42, and further the operation polarity and phase check circuit 43 &
, 43b check the polarity (L side or F side) and phase shift, and if there is no abnormality, output to the storage circuit 44.

Further, if there is an abnormality, the memory circuit 44 is cleared.

The storage circuit 44 has its contents updated, for example, every cycle of the power supply, and outputs digital signals converted in parallel according to the input to the curve forming memory 60. 47a,
47b, 48a, 48b and 49 are insulating circuits using photocouplers.

Next, the curve forming memory 60 is a writable and readable memory in which fader electrode lamp light quantity characteristics according to the purpose and applied equipment are stored in advance. In general, the important characteristic of a light control device is the visual distance of the subject.
Since the operator can control the light as he or she wishes, the relationship between the fader scale of the dimming device and the visual sense amount of light changes linearly from 0% to 100% and from 100% to 01. The ideal is. However, this relationship differs depending on the applied lighting lamp and dimming control circuit, and there is also a large difference between the brightness directly perceived by the human eye and the amount of light measured by the illuminance side. The relationship differs depending on the place of use and the machine used.

In other words, as shown in Fig. 3, for example, in order to have linearity in the change in the visual sense light amount (L) with respect to the fader amount, curves A, B, and C should be used at each location such as a studio, stage, or horizon. The fader electrode lamp light intensity characteristics shall be as shown in the table below. Therefore, curve formation
Lee 60 connects each of these curves to the fader electrocouple thyristor 8.
It is stored in advance in the form of 0 output voltage, and the curve changeover switch 61
can be selected as appropriate. Also this curve forming memo! At the same time, in J-60, since the characteristics of the digital dimming control circuit 70 itself are not linear, the circuit for correcting this is broken. That is, as shown in FIG. 4, the digital signal input to the curve forming memory 60 has 7 pits and a resolution of 128, similar to the digital fader 2, but the digital dimming control circuit 700 Å output has a BCD code 2. There are 100 steps in digits. Therefore, if the fader amount is 50 or more, the digital number input to the curve forming memory 60 is 63, which corresponds to 49 on the digital dimming control circuit 700A power side. However, if the characteristic curve of the digital dimming control circuit 70 is X, there is a deviation from the characteristic curve A of 1 stored in the curve formation memory 60. The input digital signal of the circuit 70 is corrected to 60. 70 is the curve formation memo! J-60
(7) A digital dimming control circuit that generates a firing pulse for the thyristor 8° that controls the phase of the lamp power supply in order to change the light intensity of the illumination lamp according to the output signal of the Q taken
47at47b148a148b149 and 50 are insulation circuits using photocouplers, and 81 is an actor that suppresses noise generated when the thyristor is fired from coming out to the power line side, and prevents the receiver 40 from being operated due to these noises. , also has the role of blocking carrier waves to the thyristor 80 side. Therefore, the noise suppression characteristic of the reactor is such that the noise spectrum from the thyristor etc. does not affect the superimposed transmission signal range.

Although the fader means 2 in FIG. 1 is constructed by separating the digital fader 3 and the serial converter circuit 4, the digital fader which responds to pulses from the basic pulse generator circuit 17 and directly outputs serial data is used to The conversion circuit 4 can also be omitted.

Furthermore, in the above embodiment, the digital fader 3 was used as the fader means 2, and the digital dimming control circuit 70 was used, but instead of these, as shown in (8) in FIG. A control circuit 70' may also be used.

However, in this case, an A/D converter 100 and a D/A converter 101 are required, but the other configurations can be made exactly the same as in FIG. 1.

Furthermore, in the light control device shown in FIG. 1, the carrier wave superimposed on the power source may be of one frequency instead of having two different frequencies. When such a frequency is used, it is not necessary to provide two series of gate circuits and phase check circuits in the transmitter/receiver, and the circuit can be simplified.

Note that the transmission method according to the present invention is not limited to the embodiment shown in FIG.
g) format, or a format such as width modulation according to 1.0.

Furthermore, in the above-mentioned embodiment, the signal transmitted through the power line was mainly a digital value signal corresponding to the dimming fader position W (alarm log 1). In addition, control signals such as the selection of the optical filter of the illumination lamp (selection of magenta, yellow, and cyan) and the direction (pan, tilt, focus) of the lamp (lighting equipment including the lamp) can be sent in the form of digital signals. It is also possible to transmit serial digital signals from the fader in a sequence. In this way, the dimming signal,
By multiplexing signals for selecting optical filters, adjusting the direction of lighting equipment, etc., and controlling them remotely, this device can be applied to places where only power lines for lighting are installed, making it easy to control lighting equipment by remote control. presets (selection of optical filters, direction adjustment) and light amount adjustment can be easily performed.

As described above, the light control device of the present invention digitally processes the fader amount using the power line of the lighting lamp, and superimposes the processed signal on the power line to control the lighting lamp. By eliminating the conventionally necessary electric wire M for transmitting the fader signal for dimming the illumination lamp, and by freely operating the shift kneader 1 using the fader means provided on the transmitting side, the light intensity of the illumination lamp can be adjusted. It is possible to fully demonstrate the lighting effects of studios, stages, etc. by controlling the time in a timely manner.In cases where the installation location of the existing studio, stage, etc. is different, or when the applied lighting equipment is different. The fader volume vs. lamp light amount characteristics, such as the following, are stored in memory in advance and can be selected and changed, allowing you to obtain the fader lid vs. lamp light amount characteristics that match the installation location, making it easy to manufacture and adjust. became.

[Brief explanation of the drawing]

FIG. 1 is a professional external view of a light control device according to an embodiment of the present invention;
FIG. 2 is a waveform diagram for the device shown in FIG. 1, FIG. 3 is a fader electrode lamp light quantity characteristic diagram, FIG. 4 is an explanatory diagram for explaining the operation of the curve forming memory, and FIG. 5 is a diagram for explaining the operation of the curve forming memory. FIG. 6 is a block diagram of a light control device according to yet another embodiment of the present invention in which the transmission method is FSX format, and FIG. 7 is a block diagram of a vA1 optical device according to an embodiment of #! FIG. 6 is a waveform diagram for the device shown in FIG. 6; In the figure, 1 ~ Operator 2 ~ 7 - Operator means 3 ~ Digital fader 3' ~ Analog fader 10 ~ Transmitter 31 ~ Dimming controller 40 ~ Transmitter 60 ~ Curve formation memory 61 ~ Nonobu changeover switch 70 ~ Digital adjustment Light control circuit 70' ~ Analog dimming control circuit 90 ~ Power line patent applicant Ryudensha Co., Ltd. (13) Figure 2 Figure 3 (Factor Mekaku h)

Claims (1)

[Claims] 1. Fader means for outputting a serial digital signal according to the fader amount for dimming in synchronization with the power supply of the illumination lamp, and a fader means for outputting a serial digital signal according to the fader amount for dimming, and a power supply frequency υ according to the output digital signal of the fader means -qK. A transmitter that superimposes a carrier wave of a sufficiently high frequency on the power source of the illumination lamp, a receiver that receives the carrier wave and outputs a digital signal corresponding to the carrier wave, and several types of selectable nonlinear characteristics are stored in advance. A curve forming memory that outputs a digital signal corrected in accordance with the characteristics and in accordance with the characteristics of the dimming control means described later in accordance with the output signal of the receiver, and controlling the power source of the illumination lamp in accordance with the output signal of the curve forming memory. A light control device comprising a light control means. 2. A light control device according to claim 1, characterized in that the nonlinear characteristic is a characteristic that makes the visual sensation light amount characteristic of the fader electrode pair an @ line.