Implement a photosensor on the site for street lighting

photosensor for street lighting - what is it?

Imagine that you earned before dark in the studio, which is located in one of the outbuildings of the house on the opposite edge of the area.Switchboard, where lights are included throughout, located in a house that is going to have to literally touch.But if every lantern or even a total chain was photosensor for street lighting at dusk along all tracks have flared bulb pogasnuv only with the coming of dawn.But what kind of sensor?

Externally it is very similar to the LED, that is a transparent body (in some cases there is only a transparent window from the end) and two outputs - the collector and emitter.Configured a sensor to a specific light wave from the entire available spectrum, ie it can be activated by infrared radiation or ultraviolet.How does this happen?With increasing coverage and increases the resistance of the phototransistor, which is made on the basis of the sensor circuit is switched off when the lighting is not available, the resistance becomes negligible and lights the lamp in the lamp.

sensor lighting outside - Applications

As already mentioned, the phototransistor can be installed either in each lamp, or a single for the rest of the chain.In some cases, it is preferable?For example, the section of radiating paths from the house, along each of which formed a support line with energy-saving bulbs in lampshades.For each separate circuit breaker, and the first lamp - sensor.Switch permanently closes the circuit, but the current is not due to high resistance in the phototransistor.As soon as it gets dark, the resistance drops, the circuit is completed in full, and all the lights light up at once.

If you do not have a cable connection tubes with a single power supply, and each of them has an individual - a solar cell, it is necessary that a street light sensor has been installed on all the lights, without exception.Of course, in this case, the simultaneous operation of lamps complicated by the fact that one of the photo-transistor falls the shadow of a tree, the other is constantly exposed to bright light. Furthermore, if optical sensor dust, it is largely degrade its performance, you get the imitation of eternal twilight .

motion sensors for lighting street - convenient and economical

Even if you have lights on solar batteries, the service life of lamps and batteries is fairly limited in the range of several thousand hours.Therefore, if you do not need to save electricity, about the safety of lamps and batteries should be taken care of.Using a photo sensor, you, nevertheless, to make lamps burning all night.If used simultaneously, and timer to close to the middle of the night lights on the tracks was shut off, then it will create some inconvenience, if you suddenly need to go somewhere at a later time.In such cases, invaluable motion sensors for lighting streets.Photocells

responsive to motion rather than the thermal range exceeding 5 degrees or more than the temperature of the surrounding space, and may operate under shaking trees in the wind.

There are two types: a photocell catcher directional beam on it, which means the interrupt signal automation and infrared tracking in the environment.Logically, the first set in a pair of transmitter-receiver, so that the beam emitted from the first, the second picks. Infrared sensors that respond to movement, can be anywhere, as long as they have been provided with an adequate field of view, which can be up to 180 or 360 degrees .It is very convenient to move around the site when, passing by a burning torch at your approach, you can see how the next turn on, and a few steps behind your back goes out first.