Application of Microcomputer Time Control Switch in Park Street Light Control System Li Shuzhu (Shimen Forest Park, Nanning, Nanning 530000) describes the installation of microcomputer time control switch in street lamp control system to realize the automation of street lamp lighting and light off control Reduce the workload and risk of the staff.
In 2013, Shimen Forest Park in Nanning City actively carried out innovative activities of park street lighting control methods according to the arrangement of innovative party organizations in the garden system. Through the innovation activities, the street lights in the park scenic spots can be different in different time periods in different seasons. The needs of the area are turned on and off, thus ensuring the safety of tourists' gardens while saving energy, improving the maintenance efficiency of street lamps, and creating better energy-saving and social benefits for the park.
1 The situation of the streetlights in the park before the innovation activities The situation of the streetlights in the park before the innovation activities is: all the street lights in the scenic spot are powered by one power supply, controlled by only one switch, and the daily lighting and light-off control are on duty from the same day. Security personnel come to manually close or open the switch. The disadvantages of street lamp control in this way are as follows: First, as long as any fault occurs in the line or power supply, the normal lighting of all street lamps will be affected; second, the power supply line is too long and all loads are concentrated on one power supply line, and the line is added. Loss, because the line loss is proportional to the length of the line and the current flowing through the line, and the current flowing through the line is proportional to the load on the line. The increase of the line loss affects the power quality of the remote street light, thus affecting the far The normal illumination of the street lamp even shortens the service life of the lamp; the third is that when the line is faulty, the search range is too large, which makes the difficulty of finding the fault increase, thus affecting the maintenance and maintenance efficiency; Fourth, it cannot meet the different needs of different areas. And the requirement to turn off the light. Fifth, manual operation of the electrical switch is very troublesome, and the security personnel operating the electrical switch do not have an electrician's job certificate, do not comply with the safe operating procedures, and have a large potential safety hazard.
All the 200 street lights in the park use 100W incandescent lamps. The disadvantage of using such a lamp is that the energy consumption is large, and the bulb is easily burned out due to the long electrification time, thereby increasing the maintenance workload.
2 After the renovation of the streetlight control system in the scenic spot, the park will make the following modifications to the streetlight control system in the scenic spot: the lighting and the extinction of the streetlight are controlled by the microcomputer time-controlled switch in different areas and time zones to realize automation.
The streetlights in the current scenic area are divided into four different areas, and four power sources are used for power supply.
The 32W, 45W energy-saving lamps replace the original 100W incandescent lamps, reducing the load on the power supply line to reduce the current flowing through the line and reduce line losses.
3 Description of Microcomputer Time Control Switch 3.1 Characteristics of Microcomputer Time Control Switch Microcomputer time control switch is an ideal electrical control device that saves energy and prolongs the service life of lighting devices. It can be automatically turned on in the dark when it is dark, and automatically turned off in the middle of the night. It is the most ideal control product for street lamps, light boxes, neon lights, production equipment, agricultural farming, warehouse exhaust dehumidification, automatic preheating, and radio and television.
Microcomputer time control switch with built-in rechargeable battery, external battery switch, high precision, industrial grade chip, strong anti-interference.
Microcomputer time control has 10 switch timings to choose from, which can realize random opening and closing functions.
3.2 Microcomputer time control switch wiring method Microcomputer time control switch wiring has the following ways: (1) is the wiring method indirectly controlled by 220VAC/50HZ contactor.
Step 驵Setting item 1 Press (Auto/Manual) to make the display's dash line in the automatic position 2 press (time) to enter the timed setting (display 1ON3 press (week) setting the same every day, different every day, Monday to Friday same, or Saturday to Sunday the same 4 press (hour (minute) setting open time 5 press (set) entry timing close setting (display 1OFF) 6 press (hour) (minute) set off time 7 Repeat 2-6 to set the time of 2-10 switches. 8 Press (clock) end time setting (3) Check: Press (Timer) to check if the set time is correct.
For direct control of the wiring method.
3.3 Microcomputer time control switch operation Use the product's power switch to the "on" position before use. Press and hold the “clock wrinkle button†and press the “day button, time button, minute button†to adjust the Beijing time.
Modify: Set to the (Cancel) button at this setting, and then reset the time and week of the timer switch.
3.4 Use, for example, the controller automatically turns on the power at 6 pm every day, and turns off the power at 2 pm at night. Press the following steps: first adjust the time, then press the “Timer†button, the display shows, press and hold the “Time buttonâ€, the display Show as. After the above adjustments, press the “Clock†button and the display will resume displaying Beijing time.
Press the “Manual†button again to turn the circuit on or off directly, and then the controller will automatically run every day.
-+=31612.35 (KWh). Therefore, after the transformation, it is estimated that the annual savings
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