【 Weak current College 】 lighting control types and methods

Lighting control and adjustment mainly in two areas: one is the brightness that light intensity control, the second is the color of the control.
Controls the brightness of there are two primary ways: one mechanical and subtraction through control points on the number of lamps, to achieve the overall intensity of light increases or decreases. For single lamp, you may use the light or variable aperture to change lamps light; the alternative is electrical control method that uses a variety of dimmer, change the lighting of working voltage or current to adjust the lamp's luminous intensity. These two methods have different characteristics, the first method has the advantage of not affect color temperature adjustment, but not easy. The second method is simple, and can realize automatic and programmed operation, the drawback is the luminous intensity in the change, the color temperature and color of a larger change.
From lighting electrical control principle, can be summarized as on/off control and luminous intensity control, and this corresponds to a switch control and dimming control in two ways.
1, switch control
Light switch control device refers to control lighting circuit on/off, i.e. control lamps lit and extinguished in the various switching devices, including knife switch, contactor and air switch, etc. Which air switch for excellent protection functions of the widespread use of song and dance halls, quilts high-power lamps on/off control, and lighting switch, etc.
Use pulls the switch (or same-type switch) or air switches to control lights on/off, is the most common manual (manual) switch control device. For example HDL11012-12 circuit switch Board is composed of 12 groups of like-15A and fuse switches, can be separately controlled 12-channel light. It applies to the current less than 15A, such as various types of lamps and rotating lights, strobe light, violet light, laser light, glass and most of the action type of lens for lamps. For high-power spotlights, floodlights, chasing lights the appropriate selection of quenching ability strong DZ-air switch or CJ10 type contactors.
Because of the need for a variety of dance hall light art effects, so in addition to using the manual operation of switching equipment, it is also used to the sound control (voice), program control (SPC) or even the computer control of many special features of the switch control device.
Voice-activated lighting equipment makes light with music and flashing, oscillating or rotating. Lighting of voice-activated in two ways: first, to have voice capabilities of lamps, lamps, Interior is equipped with microphone amplifier, relay or silicon controlled rectifier (SCR), and directly feel the outside voice control motor movement, led lamps make scanning, swing or rotation, etc. Another is the lamp control console itself has a voice-activated function, the principle is put into a mixer sound signal lamp control console (dimmable) of sound control circuit to control the set of lights on/off. This way, especially for large grouping of stormwater control lights action, along with the music and take turns to ignite, causing a colourful twinkling effects.
Program-controlled lighting control device is the use of touch-button, by digital control circuit to trigger the SCR repulsive to control the Road respectively grouped lamps according to certain procedures take turns lit and extinguished, which produces a certain artistic effects. It is particularly suitable for the need to turn on/off, in order to achieve continuous transform color, design and effectiveness of stormwater lamps, spotlights and boundary lights and other fittings.
2, dimming control
Dimming control typically is changed by the current or voltage lamps to continuously adjustable lamps glow brightness. Press dimmer method to cover: turning cloudy for dimming, autotransformer dimming, saturated choke dimming, magnetic amplifiers dimming and thyristor dimmer, etc. The first four lighting control equipment are bulky, heavy and other shortcomings. The current widely used is the thyristor dimmer. To this end, we'll detail.
The above described is the lighting brightness control, on the light color control in song and dance halls in mainly through intelligent lights, i.e. through the control computer within the film and light Prism generate 10 kinds as well as dozens of color changes. You can also batch Spotlight or rain light group, with different color of transparent colored paper, switch control color changes.