CN2369287Y - Microcomputer controlled electric power saver for street lamps - Google Patents

Abstract

The utility model relates to a novel power-saving controller controlled via the programme of a microcomputer for street lamps, which can be used for gas discharge lamps. The utility model utilizes the characteristic that the visual sensitivity of human eyes can be improved at night and the feature that the high illumination is not needed at the second half nighttime, and the disadvantage that the electric energy can be wasted and the service lift of the existing street lamp can be reduced due to the rise of a network voltage at the second half nighttime are in consideration. A resistance-capacity phase control circuit composed of an industrial control SCM, a power electronic device, photocoupler, etc. is adopted, the working voltage and the illumination of the street lamps in different time intervals are adjusted by the software of the SCM, and the electric energy can be effectively saved within range of the illumination of street lamps of the Chinese Standard thereby; the wattful power saving rate can reach 25%to 40%, and the service life of the street lamps can be effectively prolonged.

Description

Microcomputer program control lighting saving device

The utility model is the monolithic processor controlled street lighting electricity-saving controller of a kind of industry.

In the power saving scheme that at present street lighting is adopted, having a kind of is " every the small cup light on method " after midnight, and also having a kind of is to adopt semiconductor devices and relay or electric contact crystal clock in conjunction with forming after midnight the regularly phase-shift voltage regulating mode of sudden change.Preceding a kind of mode causes under the bright lamp very bright, and it is very dark down to turn off the light, and causes the illumination uniformity of road very poor, and especially power and electric consumption on lighting load minimizing after the 23:00 of every day is when illuminalive power-supply voltage raises (230V-240V).According to interrelated data, when supply voltage is higher than ratings 9.1%, the terminal voltage of ballast resistor exceeds 14% of normal value, working current increases 19.5%, cause electric energy loss to strengthen, simultaneously too high because of line voltage, easily cause Inductive ballast saturated, the electric current that flows through lamp is a peaked wave, has reduced the serviceable life and the effective utilization of metal halide lamp.The second way is because of existing the circuit structure complexity, contactor control, serviceable life is short, the drawback of poor reliability, should not be installed on the street lamp under the outdoor rugged surroundings, its phase-shift voltage regulating is the formula of regularly suddenling change in addition, can make the driver of driving at night produce the incompatibility of short time like this, and traffic safety is caused a hidden trouble.

The purpose of this utility model is under the situation that does not change existing transmission line of electricity, lighting, has solved " every the small cup light on method " when voltage is high after midnight, can not overcome the street lamp waste of energy, the difficult problem that light fixture shortens serviceable life; Next is to have overcome the above-mentioned drawback that at present existing electricity-saving appliance exists fully, adopt the contactless control of industrial single-chip microcomputer, needs according to different regions, varying environment, by control able to programme, be implemented in when 23:00 point back line voltage raises every night, the appropriateness step-down is energy-conservation, and has prolonged the serviceable life of lighting.

This electricity saving of road lamp controller is made up of microcontroller power supply circuit and governor circuit, and the microcontroller power supply circuit provides DC+5v power supply to single-chip microcomputer.Governor circuit is made up of current zero testing circuit, thyristor gating circuit, the current zero testing circuit provides synchronizing signal by the detection to source current to single-chip microcomputer, and thyristor gating circuit provides controlled start pulse signal by the control signal that single-chip microcomputer provides to thyristor.

Below in conjunction with accompanying drawing principle of work of the present utility model is elaborated.

Fig. 1: microcomputer program control battery saving arrangement theory diagram, its course of work is as follows:

After road lamp power supply is connected every night, before 23:00, CPU accepts the current zero detection signal, every half cycle at power supply is approximately zero gating pulse by trigger to the synchronous pilot angle α of thyristor output, this moment, thyristor was in fully conducting state, loaded on work under the total head state, and 23:00 point back line voltage raises, vehicle flowrate and pedestrian reduce, and this moment, the timer timing program by quartz (controlled) oscillator and CPU inside began to carry out progressively step-down program.Needs according to the user; its pressure regulation amplitude can be by the programming to CPU with the time of finishing pressure regulation, and the conduction angle of control thyristor is finished, and has so not only saved electric energy; simultaneously also protect street lamp not to be subjected to high voltage to influence its serviceable life, re-executed said process in second day.

Fig. 2: circuit theory diagrams of the present utility model, form the power circuit that the DC+5V operating voltage is provided to single-chip microcomputer by capacitor C 3 couplings and D1, D2, C1, C7, C8, R1; Two optocoupler TLP-521 and resistance R 2 are formed the zero current detection circuit, and the synchronizing signal of every half cycle pulse is provided to singlechip CPU; Crystal oscillator C2, capacitor C 5, C6 and singlechip CPU built-in timer are formed the time synchronisation pulsing circuit, and optocoupler MOC-3023 and R4, R5, R6, C4 form the trigger circuit that sent the photoelectricity isolated controlling thyristor phase shifting angle of gating pulse by singlechip CPU; , send gating pulse to the thyristor phase shifting angle by CPU according to the program that can enroll and realize Energy Saving Control by programming according to the needs of varying environment, different time street lamp to singlechip CPU; MOV is a voltage dependent resistor (VDR) among the figure, provides overvoltage protection to circuit; JP is a jumper wire device, and when its short circuit, CPU carries out the self-check program of setting.The band dotted portion is a thyristor, and VT is main circuit load, just street lamp.Single-chip microcomputer: GMS97C2051.

The utility model circuit structure is simple, (being applicable to most gas-discharge lamps and metal halide lamp) applied widely, the life-span is long, and power saving rate is up to 30%-35%, and period of cost recovery short (according to the different regions electricity price in 5-7 month) has extraordinary practical value and dissemination.

Claims (2)

1. a microcomputer program is controlled lighting saving device, form by the power circuit and the main control circuit of device in casing, it is characterized in that: power circuit is made up of coupling capacitance, stabilivolt, diode, resistance, electric capacity, provide+the 5V power supply by single-chip microcomputer, main control circuit is controlled by mcu programming, current zero detects and provides synchronizing signal by optocoupler to single-chip microcomputer, and trigger circuit adopt optocoupler and single-chip microcomputer Signal Spacing.

2. a microcomputer program control lighting saving device according to claim 1 is characterized in that: form the power circuit that the DC+5V operating voltage is provided to single-chip microcomputer by capacitor C 3 couplings and D1, D2, C1, C7, C8, R1; Two optocoupler TLP-521 and resistance R 2 are formed the zero current detection circuit, the synchronizing signal of every half cycle pulse is provided to singlechip CPU: crystal oscillator C2, capacitor C 5, C6 and singlechip CPU built-in timer are formed the time synchronisation pulsing circuit, and optocoupler MOC-3023 and R4, R5, R6, C4 form the trigger circuit that sent the photoelectricity isolated controlling thyristor phase shifting angle of gating pulse by singlechip CPU; , send gating pulse to the thyristor phase shifting angle by CPU according to the program that can enroll and realize Energy Saving Control by programming according to the needs of varying environment, different time street lamp to singlechip CPU.

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