Solar lighting adopts the principle of the control system

Lighting control and adjustment mainly embodied in two aspects: one is brightness, the light intensity control, 2 it is colour control. Brightness control method basically has two kinds: one kind is mechanical addition and subtraction, lit by controlling the number of lamps and lanterns namely, glow to achieve overall strength increased or reduced. For a single lamp, can use mask or variable aperture to change the pervious to light lamps and lanterns; Another method is the electrical control method, which USES different kinds of dimmers, change the working voltage or current of lamps and lanterns, so as to adjust the luminous intensity of lamps and lanterns, the two methods have their own characteristics, the advantages of the first approach is to won't affect the color temperature, but not convenient adjustment. The second method is simple, and can realize automatic and programmable operation, its defect is at the same time in the change of the luminous intensity, moderate color color rendering has great changes. From light electric control principle, can be summarized as on-off control and two kinds of luminous intensity control, and the corresponding control switch and the dimming control two methods. 1, switch control: light switch control equipment refers to the on-off control of lighting circuit, which control the lighting and extinguishing of lamps and lanterns of various switch equipment, including the knife switch, contactor, air switch, etc. The air switch for good protection function, is widely used as a dance halls of the high-power lamps and lanterns of total switch on-off control and lighting, etc. Using the open switch ( Or the boat switch) Or air switch to control the lights on and off, is the most common manual ( Artificial) Switch control equipment. HDL11012 type 12 circuit switch board, for example, is composed of 12 groups of 15 a boat switch and fuse, 12 road lighting control. It is suitable for current is less than 15 a of lamps and lanterns, such as all kinds of rotating lights, strobes, light, laser, glass ball, and most of the lens movement type lamps and lanterns. For high-power spotlights, floodlight, follow spot is selected for arcing ability of DZ type air switch or CJ10 type contactor. Because of rich and colorful lights dance halls need performance art effect, so in addition to using manual switch equipment, also use voice control ( Voice control) , process control, SPC) Even the computer control of a variety of special features of the switch control equipment. Voice-activated lights can make the lights flashing, swinging or rotate with the beat of the music. Light voice control has two ways: one is the lamps and lanterns has the voice control function, with a microphone, amplifier, relay or silicon controlled inside the lamp ( Thyristor) Sounds, feel directly outside the control of motor, lamps and lanterns to scan, swing or rotates. The other is a light controller itself has the voice control function, the principle of which is to put the mixer voice signal into the light controller ( The dimming units) Voice control circuit to control groups of lights on and off. This approach is especially suitable for control of a large group of rain light movement, with the beat of the music and take turns to light, colorful flicker effect. SPC lighting control equipment is the use of light touch button, via digital on-off control circuit to trigger the thyristor, to control the various lamps and lanterns of the marshalling respectively according to certain procedures in turn light and go out, resulting in a certain artistic effect. It is especially suitable for the need to constantly round circulation, in order to reach the frontier change color, pattern and effect of the rain light, spotlight and boundary light lamps and lanterns, etc. 2, dimming control, dimming control is often changed by the size of the lamps and lanterns of current or voltage, adjust the luminous intensity of lamps and lanterns to frontier. By dimming method to divide: rheostat dimmer, autotransformer regulator dimmer, saturable reactor that move light, dimmer and dimmer silicon controlled magnetic amplifier and so on. The first four dimming all has the disadvantages such as large volume, heavy equipment. Is currently widely used thyristor dimmer. To this end, we will be detailed later. The above narrative is the brightness of the lighting control, on the colour of the light control is mainly achieved by amount in dance halls, namely, by controlling the amount of the shade and the prism in a dozen or even dozens of color changes. Can also put the spotlight in bulk or rain lamp group, respectively with different colors of transparent paper, through a switch control color changes, respectively.