First, large network dimming station
The large-scale dimming station, with the most advanced electronic technology and computer technology, incorporates many design experiences and advanced design ideas in lighting design, representing the highest level of today's dimming technology. The dimming light path of the large dimming station is above 1000, and the controllable dimmers are all above 2048. The controllable capacity of the dimming station is no longer a concern for lighting technicians.
The re-enactment of the large-scale dimming consoles is carried out by the centralized control putter and the field re-playing putter. For the lighting designer, a large-scale dimming station controls hundreds or even thousands of lamps. The performance makes a continuous change of seamlessness. Such complicated and heavy tasks are realized by the dimmer programming. This requires the dimming station to have a very flexible and simple programming method and program modification method to minimize the lighting engineer's programming time. Reduce the energy spent on lighting equipment and spend more time and energy on the show.
With the emergence and continuous improvement of modern stage intelligence from luminaires, there are now very common applications. Smart luminaires generally use new and more efficient illuminating light sources. The dimming method is completely different from traditional luminaires. The traditional control of intelligent luminaires requires a dedicated computer console. Nowadays, these large-scale dimming stations have optical path attribute setting and 16-bit DMX output. There is a dedicated encoder for adjustment control, which can safely control the intelligent lamps.
In addition to large capacity, programmable, and intelligent lighting control at the same time, modern large-scale network dimming stations also have the following features:
The lighting operator can know the instantaneous information and working status of the lighting system through the network, on the lighting console display or PC computer, and timely monitor, intervene or correct the various lightings.
Using the Microsoft operating system windowsXP graphical user interface, the lighting division's operation is more intimate and convenient;
Support 3D lighting design software, support wired, wireless, offline editing, remote video, media player, web browser, E-MAIL and PDF interpretation software, compatible with future lighting network protocol (ACN), greatly saving the use of equipment and lighting At the time, the sound and visual communication between the director and the lighting engineer at the scene during the rehearsal of the show brought revolutionary convenience.
The console has a full tracking backup feature. It can be networked with another console to learn from each other and back up each other. That is, the two dimming stations are processed in parallel, and one programming is learned immediately. When any one of the main and standby consoles fails, the other will automatically follow up the output. This way, the sharing of resources can be fully utilized, and the lighting control of the performance or conference can be ensured;
In the case that the hardware structure does not change, you can download the limited version of the operating software or the offline editor from the manufacturer's website to increase the system's forward-looking and compatibility, and lay a good foundation for user management to enter the information highway;
Support mouse, touch screen;
Multi-language screen support is available.
Second, the network dimmer
Before the 1960s, the dimming equipment on the stage from the brine tank to the large power variable resistors were used to dim the bulb load by changing the sine wave of the AC power source. The disadvantage of this form is that a large amount of thermal energy loss and equipment volume are very large, but the advantage is that there is no interference noise. The rapid development of the electronics industry in the 1960s, the unidirectional thyristor (SCR) and the two-way thyristor (TRAIC) have resulted in smaller dimmers, reduced operating temperatures, and the possibility of using low voltage signals for dimmers. Take control. This is the dimmer we are familiar with. But we know that this way of triggering the phase-cut waveform gives us the problem of continuing current in the power system. In a standard three-phase power supply system, these harmonics increase the current at the center conductor to 1.4 times normal. Harmonics produce audible noise that can cause high heat in metal conductors and even transformer transformers in power transmission systems.
The promotion of laws in EU countries requires that dimming systems must be based on low levels of harmonic leakage. On the other hand, the disadvantages of using phase-cut waveform dimmers on the market are becoming more apparent. More and more lamps are no longer purely resistive loads, such as fluorescent tubes, electronic dimming ballasts, LED lights, electronic or electromagnetic low-voltage transformers, and a pair of these types of light sources have a common point, that is, phase cutting wave opening Optics have been greatly away from the rationality of dimming these types of light sources. Although the future development of the dimmer was oriented with the reverse phase-cut waveform dimmer of the IGBT as the power amplifier component, the cumbersome filter line diagram could be technically eliminated because of its appearance. However, the problem of the original phase-cut waveform still exists, but it only reduces the weight.
The newly developed SST series sine wave dimmer (SineWaveDimmer) uses a microprocessor to generate a high frequency PWM control waveform to the IGBT power switch of the dimmer, producing a normal 0-230V AC sine wave output to drive the load. Dimming with high frequency switching can reduce the size of the filter assembly and ensure that the resulting noise is outside the human hearing range. The carrier frequency of 47KHz is divided into 255 levels, and the resolution of the output voltage is less than 0.5% or less than 1.15V. Making the output a sine wave with no levels, this SST series sine wave dimmer can perform excellently when dealing with non-linear loads, without the minimum load power limit and with automatic output protection, which also eliminates redundant filter coils. Weight and other advantages.
In addition, in some appliances whose working voltage cannot be lower than certain values, such as ballasts, neon tubes, electric fans, motors, etc., their minimum operating voltage can be preset. Then, just like the incandescent bulb, adjust the pressure. That is to say, all types of loads can be dimmed/regulated by SST sine wave dimmers. Not only are the through/dimming circuits interchangeable, but the sine/dimming circuits are also interchangeable. It can perform excellent performance when dealing with some non-linear loads with water on the stage, and realize the ideal management mode of the dimmer that the lighting industry has been dreaming for for decades: to prevent pollution from the power grid, Avoid the interference of its own working voltage on other electronic devices in the field, and achieve the realm of high-precision dimming and large-scale management.
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