What is the control of a street light switch? Semiconductors ? What is the principle

Street light switches are controlled by semiconductor devices. Semiconductor devices are materials that can control the flow of current under specific conditions, and common semiconductor devices include diodes, transistors, and field effect transistors.

The principle of a street light switch is to control the flow of current through the conduction and truncation of semiconductor devices. When the street light switch is off, the semiconductor device is in a truncated state and the current cannot pass through. When the street light switch is on, the semiconductor device is on and the current can pass through smoothly.

In the control circuit of a street light switch, a transistor is usually used as a switching element. A transistor is a semiconductor device with a three-layer structure that consists of a base, emitter, and collector. When a signal from the control circuit is input to the base, the transistor's on-state changes.

Specifically, when a signal from a control circuit is input to the base, if the signal is high, the transistor will enter a conductive state even if the voltage between the base and the emitter is small, and current can flow from the collector to the emitter. When the signal is low, the transistor goes into a truncated state and current cannot pass through.

By controlling the conduction and truncation states of the transistors, the control of street light switches can be realized. For example, when the signal in the control circuit is high, the transistor is turned on, the street light switch is turned on, and current can flow to the street light, causing it to light up. When the signal is low, the transistor is cut off, the street light switch is turned off, and the current cannot flow to the street light, causing it to go out.

In short, the street light switch is controlled by a semiconductor device, and the flow of current is controlled by controlling the conduction and truncation states of the device, so as to realize the on/off control of the street light. This control method has the advantages of being fast, reliable and energy-saving, and is widely used in lighting equipment such as street lights.

With a clock controller, an intermediate relay, and an AC contactor, a street lamp control circuit can be formed. The clock controller can set two times: for example, set to 7 o'clock in the morning, the contact is disconnected, the street light circuit loses power, and the light goes out; At six o'clock in the evening, the clock control contact is turned on, the intermediate relay is turned on, the intermediate relay is closed and the AC contactor is turned on, the street light circuit is on, and the street light is on.

It contains a detailed description of semiconductors.

The automatic control circuit is generally set by the controller, mainly according to the latitude and longitude to set the time, and the light is turned on and off at the set time. For example, the setting is to turn on the lights at 7 p.m. and turn them off at 7 a.m. Then when it's time to set it, the street lights will automatically turn on and off.

This method has a disadvantage, that is, in winter, there may be errors, for example, the winter is set to be lit at 6 o'clock in the evening, but it may be half past 5 o'clock, the road is almost invisible, it should be lit, but the lights will not be lit before the time comes.

In order to solve this problem, the photoelectric light control is adopted, and the photoelectric light control has an advantage, that is, as long as it is dark to a certain extent, the lights will be automatically turned on, and as long as the sky is bright to a certain extent, the lights will be automatically turned off.

For example, at 12 o'clock at noon, a solar eclipse occurs in broad daylight, and it is dark, at this time, if it is photoelectric light control, the light will be turned on, and if it is the longitude and latitude time control, the light will not be on.

The street lamp control circuit is on, off and off, and does not have self-locking.

The photoelectric switch circuit is bright on and dark off, or with self-locking.

The principle of street lamp controller: the street lamp controller integrates electromagnetic technology, intelligent control technology and data control technology, and intelligently adjusts it in a controllable and gentle way, so that the output voltage is stable between the set rated value range, and the street lamp controller realizes the ideal combination of the working current and brightness requirements of the public lighting system, so as to achieve the purpose of saving electricity and optimizing power supply, and the rate of the street lamp controller can be as high as 20%-40%, and the protection of the power system can extend its life by 3-4 times. The street lamp controller mainly uses imported components, and rarely uses active components, through the perfect quality control in the production process, to ensure a very high product safety, so as to ensure that the user unit to provide more safe, reliable and better performance of the product service.

The type of street lamp controller, there are two types of street lamp controller, indoor type: installed at the lower end of the indoor lighting control cabinet; Outdoor type: It can be installed according to user requirements, placed in a stainless steel cabinet, and the protection level is IP54.

At present, the brands of domestic street lamp controller production are: lamp network street lamp controller, street lamp remote controller, lamp network street lamp centralized power saver, intelligent street lamp special power saver; special energy-saving control cabinet for street lamps; Street lamp astronomical controller, astronomical clock, celestial clock, intelligent street lamp energy-saving control cabinet, street lamp power-saving control cabinet, street lamp power-saving and a series of street lamp controllers; And through the testing and certification of the National Quality Inspection Center, in line with the national electricity requirements. ET2, KQ-LD1 intelligent street lamp controller adopts the most advanced computer control technology abroad, uses the operation law of the sun and the earth and the relationship between the longitude and latitude of the earth and sunrise and sunset, and calculates the sunrise and sunset time according to the law of change of the four seasons and the longitude and latitude algorithm.

This product has the function of fine-tuning the switching time and midnight control, so as to adapt to the needs of different geographical environments; It is the best time controller for street lights, neon lights, advertising light boxes, monitoring and other equipment, which can effectively save resource consumption and reduce waste.

Street lights are a common lighting facility in cities, and its role is to provide lighting at night and increase the safety of pedestrians and vehicles. The switch that controls the street lights is to make rational use of energy and reduce energy waste.

There are many ways to control the switch of street lights, and a few common ones are described below.

The first is manual on/off control. This method is the simplest, and the switching status of the street light is controlled by manually operating the switch. Before dark, people can manually turn on the street lights, providing illumination.

And after dawn, people can manually turn off the street lights to save energy. The advantage of this method is that it is simple and easy, but the disadvantage is that it needs to be operated manually, and it is not intelligent enough.

The second is the light switch control. In this way, the photosensitive element is used to sense the intensity of the surrounding ambient light to control the switch of the street light. When the ambient light is low, the photosensitive element will sense and automatically turn on the street lights; When the ambient light is bright, the light-sensitive element senses and automatically turns off the street lights.

The advantage of this method is that it has a high degree of intelligence, and can automatically adjust the switching state of the street lamp according to the ambient light, saving energy. However, the disadvantage is that in some special cases, such as cloudy days or when there is an obstruction, the photosensitive element may not be able to accurately sense changes in ambient light.

Again, the time control switch control. In this way, the switch of the street light is controlled by a preset time. For a specific period of time, the street lights are automatically turned on; At other times, the street lights are automatically turned off.

The advantage of this method is that it can reasonably control the switching state of the street lamp according to the time, saving energy. But the disadvantage is that it is not possible to adjust the brightness of the street light according to the change of the actual ambient light. Blind.

Finally, there is the intelligent control switch control. This kind of square acre hollow type is to use sensors and intelligent control systems to achieve intelligent control of street lights. The sensor can sense the light, temperature, humidity and other information of the surrounding environment, and the intelligent control system can automatically adjust the switching status and brightness of the street lamp according to this information.

The advantage of this method is that it has a high degree of intelligence, and can intelligently control the street lights according to the actual environmental conditions to save energy. However, the disadvantage is that it requires high technology and cost investment.

To sum up, there are various ways to control the switch of street lights, and each way has its advantages and disadvantages. In the future, with the development of science and technology, we can look forward to the emergence of more intelligent, energy-saving and environmentally friendly street lamp control systems.

The electrical appliances in the home circuit do not affect each other when working and are connected in parallel;

Street lights, one of the noisy fingers is broken, and the rest will still be on, indicating that each street lamp does not affect each other and is connected in parallel;

In order to effectively control the electrical appliances, the switch and the controlled electrical appliances should be bent in series.

Therefore, the answer is: and imitate; Combine; Skewers

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Street lamp controllers are widely used in public lighting environments such as municipal roads, highways, bridges, tunnels, gardens, docks, sightseeing lights, sports squares, amusement places, advertising light boxes, etc.; The types of lamps and lanterns suitable for the street lamp controller are: high-pressure sodium lamps, low-pressure sodium lamps, metal halide lamps, high-pressure mercury lamps, fluorescent lamps and other gas discharge lighting fixtures. It has the function of selecting the number of channels, which can be easily set to 1 channel, 2 channels or 3 channels for control.

Mode 0: The user sets the switching time, and the lighting range is from 12:00 to 23:55; Lights off range from 00:00 to 11:55.

Working mode 1: The longitude and latitude control switch time is adopted, and the light off time of 2 and 3 channels can be set from 00:00 to 11:55.

Working mode 2: longitude and latitude control time: plus or minus 30 minutes, wind adopts light control.

Working mode 3: Light intensity control to switch on and off the light.

It has a rock notice and an independent maintenance button, which is convenient for the maintenance of electrical equipment or the needs of major celebrations.

There are two types of Xinshou street light controllers, indoor type: installed at the lower end of the indoor lighting control cabinet; Outdoor type: It can be installed according to user requirements, placed in a stainless steel cabinet, and protected by IP54. Features:

It adopts foreign advanced microprocessor chips, with high reliability, small error and strong stability.

With power-off data saving, the clock works uninterruptedly, without replacing the battery, and maintains the clock running for more than ten years.

The switching time is calculated by latitude and longitude, and the change of seasons is reasonably controlled, with a minimum step of 1 minute.

The collection includes LCD display of the year, month, day, hour and minute, and has a backlight, which is convenient for night observation and operation.

It has strong anti-interference ability and can resist interference pulses with an amplitude of up to 2000 volts directly input from the grid.

High-power relay output, can be connected to 220 volt or 380 volt contactor, stable control, long service life.

The street lamp controller mainly controls the opening and closing of the street lamp, and the scientific switch lamp is also a kind of energy saving. At present, the brands of domestic street lamp controller production are: time controller, latitude and longitude street lamp controller, lamp network street lamp control Qi Ming morning device, street lamp remote controller, lamp network street lamp centralized power saver, intelligent street lamp special power saver; special energy-saving control cabinet for street lamps; Street lamp astronomical controller, astronomical clock, celestial clock, intelligent street lamp energy-saving control cabinet, street lamp power-saving control cabinet, street lamp power-saving and a series of street lamp controllers; And through the testing and certification of the National Quality Inspection Center, in line with the national electricity requirements.

The intelligent street lamp controller adopts the most advanced computer control technology abroad, uses the operation law of the sun and the earth and the relationship between the latitude and longitude of the earth and the sunrise and sunset, and calculates the sunrise and sunset time according to the law of change of the four seasons and the algorithm of latitude and longitude. This product has the function of switching time fine-tuning and midnight control, so as to adapt to the needs of different geographical environments; It is the best time controller for street lights, neon lights, advertising light boxes, monitoring and other equipment, which can effectively save resource consumption and reduce waste. It can be widely used in streets, railways, stations, waterways, industrial and mining, schools, communities and power supply departments and other places that need time control. The street lamp controller integrates electromagnetic technology, intelligent control technology and data control technology, and intelligently adjusts in a controllable and gentle way, so that the output voltage is stable within the set rated value range, and the street lamp controller realizes the ideal combination of the working current and brightness requirements of the public lighting system, so as to achieve the purpose of saving electricity and optimizing power supply, and the power saving rate of the street lamp controller can be as high as 20%-40%, and the protection of the power system can extend its life by 3-4 times.