CN2403199Y

CN2403199Y - Energy saver for fluorescent lamp

Info

Publication number: CN2403199Y
Application number: CN 99257909
Authority: CN
Inventors: 张光明; 张希哲; 李澎
Original assignee: YUANTONG ELECTRONIC CO Ltd BEIJING
Current assignee: YUANTONG ELECTRONIC CO Ltd BEIJING
Priority date: 1999-12-24
Filing date: 1999-12-24
Publication date: 2000-10-25
Anticipated expiration: 2009-12-24

Abstract

The utility model relates to an energy saver for fluorescent lamps, which is composed of a shell, an air switch, an input and an output terminal rows, a circuit board controlled by a computer, a current sensor, and an energy-saving power supply transformer, wherein, the circuit board by the computer is composed of an SCM, a power supply circuit, a voltage detection circuit, a current detection circuit, a heavy current relay circuit, a large power autotransformer circuit and a warning circuit. The power supply circuit provides working voltage for the SCM and the heavy current relay circuit; output ends of the voltage detection circuit and the current detection circuit are connected with an A/D input end of the SCM; a data port of the SCM is connected with a control end of the heavy current relay circuit, and the warning circuit.

Description

A kind of fluorescent lamp energy-saving appliance

The utility model relates to a kind of energy-saving appliance, refers to a kind of energy-conservation computer-shape energy-saving appliance of fluorescent lamp that is used for especially.

At present, the fluorescent lamp of installing in most of houses all is directly it to be connected in parallel in the electrical network, the voltage at fluorescent lamp two ends fluctuates along with the fluctuation of line voltage, when line voltage increases, the power consumption of fluorescent lamp just increases along with the increase of line voltage, so with the passage of time, certainly will cause great waste; When the line voltage increase, when surpassing the fluorescent lamp rated voltage, fluorescent lamp is promptly burnt.

The purpose of this utility model provide a kind of intelligent, have overload protection, an automatic computer-shape fluorescent lamp energy-saving appliance of warning function.

For achieving the above object, the utility model adopts following design: a kind of fluorescent lamp energy-saving appliance, by housing, air switch, input and output terminal row, computer-controlled circuit plate, current sensor, energy-saving electric power transformer are formed, and it is characterized in that: described computer-controlled circuit plate is made of single-chip microcomputer, power circuit, voltage detecting circuit, current detection circuit, high-current relay circuit and high-power autotransformer circuit and warning circuit; The output of power circuit links to each other with the power input of single-chip microcomputer, high-current relay circuit, for it provides operating voltage; The output of voltage detecting circuit, current detection circuit links to each other with the A/D input of single-chip microcomputer; The data port of single-chip microcomputer links to each other with control end, the warning circuit of high-current relay circuit.

Described single-chip microcomputer is the 8 8-digit microcontroller chips that carry ROM and A/D change-over circuit;

The A/D input PD0 of single-chip microcomputer links to each other with the output of current detection circuit, and another A/D input PD1 of single-chip microcomputer links to each other with the output of voltage detecting circuit; The data port PA0 of single-chip microcomputer, PA1 link to each other with high-current relay circuit and high-power autotransformer circuit; Data port PA2 links to each other with warning circuit.

Described high-current relay circuit includes a Darlington chip with driving action.

The computer-controlled circuit plate that is made of single-chip microcomputer and interlock circuit thereof is housed in the utility model; when the computer-controlled circuit plate get electric after; single-chip microcomputer automatically performs internal processes, reads voltage, the current signal of voltage detecting circuit, current detection circuit detection, finishes various protections and controlled function:

(1) when outer power voltage 〉=192V, delaying time switched to energy-saving voltage with the fluorescent lamp operating voltage after the kind in 2 minutes automatically, through calculating, can realize energy-conservation 25%～35%.

(2) under power save mode, monitor load variations automatically, when load current increases above 0.6A, cut off power save mode automatically, get back to main power source, guarantee that fluorescent lamp has enough starting voltages, is easy to light.

(3) when the load current in the control loop surpasses the rated current of energy-saving appliance, capable of automatic alarm, cut off the electricity supply; When load restoration is normal, energy-saving appliance changes operate as normal automatically over to.

(4) the utility model is stable, the reliability height.

Further introduce below in conjunction with the drawings and specific embodiments

Fig. 1 is the utility model structural representation

Fig. 2 is the utility model system block diagram

Fig. 3 is the utility model computer control board circuit theory diagrams

As shown in Figure 1 and Figure 2, the utility model is by air switch 1, and input and output terminal arranges 2, computer-controlled circuit plate 3, and current sensor 4, energy-saving electric power transformer 5 is formed, and all elements all are installed in the same housing.

As shown in Figure 3, the computer-controlled circuit plate is made of single-chip microcomputer (CPU) U1, power circuit, voltage detecting circuit, current detection circuit, high-current relay circuit and high-power autotransformer circuit and warning circuit.The output of power circuit links to each other with the power input of single-chip microcomputer, high-current relay circuit, for it provides operating voltage; The output of voltage detecting circuit, current detection circuit links to each other with the A/D input of single-chip microcomputer; The data port of single-chip microcomputer links to each other with control end, the warning circuit of high-current relay circuit, the adhesive and the disconnection of control high-current relay, thus realization reaches purpose of energy saving to the control of fluorescent lamp voltage.

Power circuit is made of I1, B2, B3, E1, E2, E3, E4, R4, R5, C5, V1, and wherein (lead-out terminal 3 of 5V voltage stabilizing chip V1 links to each other with the Vdd of U1 end for single-chip microcomputer U1 provides the 5V operating voltage for I1, B2, E1, E2, E3, R4, R5, V1; The lead-out terminal 2 of V1 links to each other with the Vss of U1 end); I1, B3, E4 provide the operating voltage (positive pole of rectifier bridge B3 and relay K 1, the positive pole of K2 links to each other) of 12V for relay K 1, K2.

Single-chip microcomputer U1 is the 8 8-digit microcontroller chips that carry ROM and A/D converter; The A/D input PDO of U1 links to each other with the output RW1 of current detection circuit, and another A/D input PD1 of U1 links to each other with the output RW2 of voltage detecting circuit;

Current detection circuit is by current sensor Y1, resistance R 12, and electric capacity E7, potentiometer RW1 forms.Transducer Y1 becomes the energy-saving appliance output current that detects into 0～5VDC signal, through resistance R 12, and the RW1 dividing potential drop, single-chip microcomputer PD0 mouth is delivered in E7 filtering;

Voltage detecting circuit is by transformer I3, rectifier bridge B4, and electric capacity E5, E6, potentiometer RW2 forms.Transformer I3 becomes 6VAC with main power source (line voltage), through rectifier bridge B4 rectification, and E5 filtering, the RW2 dividing potential drop changes the voltage signal that detects into PD1 mouth that 0～5VDC signal is delivered to single-chip microcomputer U1.

The data port PA0 of single-chip microcomputer U1, PA1 link to each other with the high-current relay circuit, and the data port PA2 of U1 links to each other with warning circuit;

The data port PA0 of U1 is linked to each other with negative pole, light-emitting diode L1, the resistance R 2 of energy-saving voltage output relay K2 by pin 13,14 outputs through pin 3,4 inputs of Darlington chip U2; The data port PA1 of U1 is linked to each other with negative pole, light-emitting diode L2, the resistance R 3 of normal voltage output relay K1 by pin one 5,16 outputs through

1,2 inputs of Darlington chip U2; The PA2 mouth of U1 is through the input pin 5,6 of U2, and output pin 11,12 links to each other with warning circuit.

The high-current relay circuit is made up of high-current relay K1, K2, air switch H1, Darlington chip U2, light-emitting diode L1, L2, current-limiting resistance R2, R3; The control signal of single-chip microcomputer PA0 end output is exported by 13,14 pin through 3, the 4 pin input of Darlington chip U2, the adhesive of control relay K2 and disconnection, and when the K2 adhesive, energy-saving voltage output makes fluorescent lamp be operated in power save mode; The control signal of single-chip microcomputer PA1 end output is imported through 1,2 pin of Darlington chip U2, adhesive and the disconnection of 15,16 pin output control relay K1, and when the K1 adhesive, energy-saving appliance switches to line voltage with fluorescent lamp operation voltage automatically.Light-emitting diode L1, L2, current-limiting resistance R2, R3 form the indicating circuit of K1, K2 respectively.

Warning circuit is made up of light-emitting diode L3, buzzer S1, resistance R 6, R7.When electric current biography device Y1 detected load over-current, single-chip microcomputer PA2 end output high level through the 5th, the 6 pin input of Islington chip U2, was exported to alarm signal by the 11st, 12 pin, and S1 buzzing, L3 dodge gravel.PA2 end output low level after load current is normal, warning circuit quits work.

After single-chip microcomputer U1 works on power, automatically perform internal processes, read the external voltage signal of voltage detecting circuit input, when external voltage 〉=192V, after powering up 2 minutes, relay K 2 adhesives, output voltage is cut automatically and is controlled energy-saving voltage to reach energy-saving effect; Single-chip microcomputer detects the variation of output current, under power save mode by current detection circuit, when load current increased 0.6A, single-chip microcomputer was automatically with the K1 adhesive, and K2 disconnects, make the operating voltage of fluorescent lamp switch to line voltage, guarantee that fluorescent lamp has enough starting voltages; When load current surpasses the rated current of fluorescent lamp, will cut off all outputs automatically, make relay K 1, K2 disconnects, and sends sound and light alarm, realizes overloading automatic protection.

When circuit broke down, single-chip microcomputer disconnected K1 adhesive, K2 automatically, makes the operating voltage of fluorescent lamp switch to line voltage by power save mode, guarantees the operate as normal of fluorescent lamp.

Claims

1, a kind of fluorescent lamp energy-saving appliance, by housing, air switch, input and output terminal row, computer-controlled circuit plate, current sensor, energy-saving electric power transformer are formed, and it is characterized in that:

Described computer-controlled circuit plate is made of single-chip microcomputer, power circuit, voltage detecting circuit, current detection circuit, high-current relay circuit and high-power autotransformer circuit and warning circuit;

The output of power circuit links to each other with the power input of single-chip microcomputer, high-current relay circuit, for it provides operating voltage;

The output of voltage detecting circuit, current detection circuit links to each other with the A/D input of single-chip microcomputer;

The data port of single-chip microcomputer links to each other with control end, the warning circuit of high-current relay circuit.

2, a kind of fluorescent lamp energy-saving appliance according to claim 1, its special type is: described single-chip microcomputer is the 8 8-digit microcontroller chips that carry ROM and A/D change-over circuit.

3, a kind of fluorescent lamp energy-saving appliance according to claim 1, its special type is: the A/D input PD0 of described single-chip microcomputer links to each other with the output of current detection circuit, and another A/D input PD1 of single-chip microcomputer links to each other with the output of voltage detecting circuit;

The data port PA0 of single-chip microcomputer, PA1 link to each other with high-current relay circuit and high-power autotransformer circuit; Data port PA2 links to each other with warning circuit.

4, a kind of fluorescent lamp energy-saving appliance according to claim 1, its special type is: described high-current relay circuit includes a Darlington chip with driving action.