CN202043354U

CN202043354U - Square daylight lamp adjusting device

Info

Publication number: CN202043354U
Application number: CN2011201612492U
Authority: CN
Inventors: 彭婧; 李琪; 叶伟; 陈新佩; 吴金莲; 程登云
Original assignee: 彭婧
Priority date: 2011-05-19
Filing date: 2011-05-19
Publication date: 2011-11-16
Anticipated expiration: 2021-05-19

Abstract

The utility model relates to a square daylight lamp adjusting device, which comprises a singlechip, wherein the singlechip is connected with a CPLD (Complex Programmable Logic Device), the CPLD is connected with an integrated driver, the signal control end of the integrated driver is connected with an IGBT (Insulated Gate Bipolar Transistor) chopper circuit, the signal driving end of the integrated driver is connected with the grid electrode of the IGBT chopper circuit, and the AC (Alternating Current) input end and the AC output end are connected with the IGBT chopper circuit. The square daylight lamp adjusting device disclosed by the utility model can output voltage according to the time segment changes, stably outputs voltage, simultaneously has a short-circuit protection function, and can save electric energy.

Description

Square fluorescent lamp adjusting device

Technical field

The utility model relates to a kind of illumination adjustments device, particularly a kind of square fluorescent lamp adjusting device.

Background technology

In recent years, the lamp lighting construction of China has obtained develop rapidly.In order to promote the plaza lighting quality, the input to light units is strengthened on increasing square, increases the aesthetic feeling of city square, and still incident is increasing substantially of energy consumption, but the lighting device of the overwhelming majority is not with the automatic regulatory function of output voltage.

There is certain fluctuation in electrical network, and in the low power consumption period, line voltage all can raise 5% ~ 10% usually.Rising between short time voltage or peak value occurs, for the light fixture according to certain rated voltage design, the variation of voltage can influence illuminating effect, the damage of light fixture seriously can occur.Owing to be in outdoor open-air atmosphere, the square is with the more indoor ordinary lamp and lantern of lamp, the easier fault such as short circuit that occurs.

Summary of the invention

Technical problem to be solved in the utility model provides a kind of square fluorescent lamp adjusting device, can change output voltage on a time period, and regulated output voltage has short-circuit protection function simultaneously, has saved electric energy.

For solving the problems of the technologies described above, the technical scheme that the utility model is taked is: square fluorescent lamp adjusting device, comprise single-chip microcomputer, single-chip microcomputer connects CPLD, CPLD connects integrated drive, described integrated drive control signal end connects the IGBT chopper circuit, and described integrated drive drive signal end connects the IGBT tube grid, and described IGBT chopper circuit connects the interchange input and output side.

Described single-chip microcomputer is connected with button, warning device.

Described integrated drive connects optocoupler.

Described IGBT chopper circuit is connected with filter circuit.

Described CPLD adopts EPM240.

Described integrated drive adopts EXB840.

The utility model square fluorescent lamp adjusting device mainly is made of three parts, comprises the IGBT chopper circuit, the drive circuit that EPM240 constitutes, and the Mega64 single-chip microcomputer is the governor circuit of core.Control circuit is partly gathered magnitude of voltage and current value, through step-down and A/D conversion, is input to the Mega16 single-chip microcomputer.Finish a series of computings according to step-down working point algorithm, form control command and output to EPM240.EPM240 sends corresponding control signal in the IGBT chopper circuit that is connected by the EXB840 chip, drive signal is outputed to the grid of IGBT respectively again, and control is opened and turn-offed.Voltage is adjusted to the button input value simultaneously.The regulation voltage output automatically at times of the utility model square fluorescent lamp adjusting device; The load short circuits protection, short circuit IGBT protection; The pressure regulation of electrodeless contact does not produce pollution to electrical network.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples:

Fig. 1 is the utility model apparatus module connection layout;

Fig. 2 is the utility model governor circuit figure;

Fig. 3 is the utility model CPLD interface circuit figure;

Fig. 4 is the utility model integrated drive circuit theory diagrams;

Fig. 5 is the utility model IGBT chopper circuit figure.

Embodiment

As Fig. 1, Fig. 2, Fig. 3, Fig. 4, shown in Figure 5, square fluorescent lamp adjusting device, comprise single-chip microcomputer U2, single-chip microcomputer U2 connects CPLD EPM240, CPLD EPM240 connects integrated drive EXB840, described integrated drive EXB840 control signal end connects the IGBT chopper circuit, and described integrated drive EXB840 drive signal end connects the grid of IGBT pipe (Q2, Q3, Q4, Q5), and described IGBT chopper circuit connects and exchanges input AC1, AC2 end and output OUT1, OUT2 end.

Described single-chip microcomputer U2 is connected with button: S1-S5, warning device.

Described integrated drive EXB840 connects optocoupler U7.

Described IGBT chopper circuit is connected with the filter circuit of inductance L 3, capacitor C 22 compositions.

Import setting-up time, setting voltage to single-chip microcomputer U2 by the button S1-S5 among Fig. 2, after handling, sends single-chip microcomputer U2 control signal and the pwm signal EPM240 in Fig. 3, the EXB840 of EPM240 output pwm switching signal in Fig. 4, EXB840 receives IGBT pipe (Q2, Q3, Q4, Q5) among Fig. 5, the opening and turn-offing of the grid of control IGBT pipe, current detection section is with detected voltage, and conversion feeds back to the rectification that single-chip microcomputer U2 carries out output voltage to current value through AD.When detecting circuit and short trouble occurring, IGBT tube grid in directly blocking rapidly by hardware circuit is realized hardware protection.Single-chip microcomputer U2 synchronizing software is protected, and provides the alarm prompting by warning device.

Claims

1. square fluorescent lamp adjusting device, comprise single-chip microcomputer, it is characterized in that: single-chip microcomputer connects CPLD, CPLD connects integrated drive, described integrated drive control signal end connects the IGBT chopper circuit, described integrated drive drive signal end connects the IGBT tube grid, and described IGBT chopper circuit connects the interchange input and output side.

2. according to the described square of claim 1 fluorescent lamp adjusting device, it is characterized in that: described single-chip microcomputer is connected with button, warning device.

3. according to the described square of claim 1 fluorescent lamp adjusting device, it is characterized in that: described integrated drive connects optocoupler.

4. according to the described square of claim 1 fluorescent lamp adjusting device, it is characterized in that: described IGBT chopper circuit is connected with filter circuit.

5. according to the described square of claim 1 fluorescent lamp adjusting device, it is characterized in that: described CPLD adopts EPM240.

6. according to the described square of claim 1 fluorescent lamp adjusting device, it is characterized in that: described integrated drive adopts EXB840.