CN2456626Y

CN2456626Y - Power controller for cleaner

Info

Publication number: CN2456626Y
Application number: CN 01217163
Authority: CN
Inventors: 钱东奇; 耿士诚
Original assignee: Taiyike Electric Suzhou Co ltd
Current assignee: Taiyike Electric Suzhou Co ltd; Ecovacs Robotics Suzhou Co Ltd
Priority date: 2001-01-12
Filing date: 2001-01-12
Publication date: 2001-10-31
Anticipated expiration: 2011-01-12

Abstract

The utility model relates to a power controller for a cleaner, which is characterized in that the power controller for a cleaner comprises a single chip computer MCU1, a detection circuit of every half cycle start point of a single phase alternating current, an interruption signal generating circuit and a bidirectional thyristor circuit. Because the detection circuit of every half cycle start point of a single phase alternating current can detect the every half wave start point of the alternating current and input into the single chip computer, the single chip computer can control the opening line output and can cause the bidirectional thyristor to avoid the angle of flow from the range of 80 DEG to 130 DEG. Generated third harmonic is very small, and the influence to an electric network is not large. The utility model can control the variation of the power of a control motor from small to big.

Description

The output control device of suction cleaner

The utility model relates to the output control device on a kind of suction cleaner, particularly suction cleaner.

In the prior art, control the silicon controlled conduction angle by potentiometer and electric capacity, its power adjustment is continuous, greatly about medium power range, for example from one section of 600 watts to 1100 watts, the third harmonic of motor exceeds standard, and the silicon controlled conduction angle of this section is spent between 130 degree about 80 greatly.Exceeding standard of third harmonic causes the influence to utility network bigger.

It is a kind of in the power adjustment procedure of suction cleaner that the purpose of this utility model is to provide, and can reduce the output control device of the suction cleaner of third harmonic.

The technical solution of the utility model is: a kind of output control device of suction cleaner, it comprises single-chip microprocessor MCU 1, every half cycle starting point testing circuit of single-phase alternating current, look-at-me generation circuit, the bidirectional triode thyristor circuit, the interruption input signal end INT0 of described single-chip microprocessor MCU 1 connects the output terminal of described look-at-me generation circuit, the output terminal of every half cycle starting point testing circuit of the interruption input signal end INT1 order cross streams electricity of described single-chip microprocessor MCU 1, the input end of the P1.0 termination bidirectional triode thyristor circuit of described data output; Described bidirectional triode thyristor circuit comprises photoelectrical coupler IC2, bidirectional triode thyristor TR1, after being in series, described bidirectional triode thyristor TR1 and AC motor M be connected across the two ends of AC power, the control utmost point of described bidirectional triode thyristor TR1 connects the output terminal of photoelectrical coupler IC2, and the input end of described photoelectrical coupler IC2 is the input end of silicon symmetrical switch circuit.Control the silicon controlled conduction angle by single-chip microcomputer, in control procedure, do not use 80 to spend to the conduction angle of 130 these scopes of degree, and adopt the method for two kinds of conduction angle combinations beyond this scope to reach same power requirement, and controllable silicon is different at first the 360 degree waveform of alternating current and the conducting situation of second 360 degree waveform, exports by the power that is combined to form from small to large in this each cycle.

The utility model compared with prior art has following advantage:

Because the every half cycle starting point testing circuit by single-phase alternating current can detect every half-wave starting point of alternating current and import single-chip microcomputer, therefore single-chip microcomputer can be controlled the output of its mouthful line and makes silicon symmetrical switch avoid 80 to spend to the conduction angle of 130 these scopes of degree, then the third harmonic of Chan Shenging is very little, influence to electrical network is little, and the power that also can control motor changes from small to large.

The utility model will be further described below in conjunction with drawings and Examples:

Accompanying drawing 1 is circuit theory diagrams of the present utility model;

Accompanying drawing 2 is the situation of power minimum, and the conduction angle of each half-wave is all identical, and all less;

Accompanying drawing 3 is a power time little situation, and two 360 degree waveforms are one group, and first 360 degree conduction angle is bigger, and second 360 degree conduction angle is 0;

Accompanying drawing 4 is the bigger again situation of power, and two 360 degree waveforms are one group, and first 360 degree conduction angle is bigger, and second 360 degree conduction angle is less;

Accompanying drawing 5 be power less than medium situation, four 360 the degree waveforms be one group, first to three 360 the degree conduction angle bigger, the 4th 360 the degree conduction angle less;

Accompanying drawing 6 is the medium situation of power, and two 360 degree waveforms are one group, and first 360 degree conduction angle is bigger, and second 360 degree conduction angle is less;

Accompanying drawing 7 be power greater than medium situation, two 360 the degree waveforms be one group, first 360 the degree in conduction angle be 180 the degree, second 360 the degree conduction angle less;

Accompanying drawing 8 is a power time big situation, and four 360 degree waveforms are one group, and first to three 360 degree conduction angle is 180 degree, and the 4th 360 degree conduction angle is 0.

Accompanying drawing 9 is prominent situation, and each cycle conduction angle is all identical, all is 180 degree.

Embodiment: referring to accompanying drawing 1, a kind of output control device of suction cleaner, it comprises that the single-chip microcomputer model is the MCU1 of AT89C2051, every half cycle starting point testing circuit of single-phase alternating current, look-at-me generation circuit, the bidirectional triode thyristor circuit, the interruption input signal end INT0 of described single-chip microprocessor MCU 1 connects the output terminal of described look-at-me generation circuit, the output terminal of every half cycle starting point testing circuit of the interruption input signal end INT1 order cross streams electricity of described single-chip microprocessor MCU 1, the input end of the P1.0 termination bidirectional triode thyristor circuit of described data output; Described bidirectional triode thyristor circuit comprises photoelectrical coupler IC2, bidirectional triode thyristor TR1, after being in series, described bidirectional triode thyristor TR1 and AC motor M be connected across the two ends of AC power, the control utmost point of described bidirectional triode thyristor TR1 connects the output terminal of photoelectrical coupler IC2, and the input end of described photoelectrical coupler IC2 is the input end of silicon symmetrical switch circuit.

Every half cycle starting point testing circuit of described single-phase alternating current is triode BG2, and its base stage is connected on the AC power after the step-down, and its collector meets the interruption input signal end INT1 of single-chip microcomputer MCU1.

Described look-at-me generation circuit is used to regulate the power of motor, be made up of IC1 and button K2, and the model of IC1 is 555, is used for the signal of button K2 is carried out anti-shake processing back output single-chip microcomputer.

P1.2 to P1.7 in the accompanying drawing 1 is the data input/output port of single-chip microcomputer, and external light emitting diode is used for the grade of indicated power.Described K1 key is a reset key, and described transformer T1, bridge rectifier circuit D1-D4, resistance R 1, diode D11, capacitor C 2, voltage stabilizing diode DW1, resistance R 2, triode B, capacitor C 3 are formed D.C. regulated power supply, for entire circuit provides power supply.

The power that accompanying drawing 2 to accompanying drawing 9 provides motor is from small to large the time, and the situation of change of silicon controlled conducting angle can make up by program.

Claims

1, a kind of output control device of suction cleaner, it is characterized in that: it comprises single-chip microprocessor MCU 1, every half cycle starting point testing circuit of single-phase alternating current, look-at-me generation circuit, the bidirectional triode thyristor circuit, the interruption input signal end INT0 of described single-chip microprocessor MCU 1 connects the output terminal of described look-at-me generation circuit, the output terminal of every half cycle starting point testing circuit of the interruption input signal end INT1 order cross streams electricity of described single-chip microprocessor MCU 1, the input end of the P1.0 termination bidirectional triode thyristor circuit of described data output; Described bidirectional triode thyristor circuit comprises photoelectrical coupler IC2, bidirectional triode thyristor TR1, after being in series, described bidirectional triode thyristor TR1 and AC motor M be connected across the two ends of AC power, the control utmost point of described bidirectional triode thyristor TR1 connects the output terminal of photoelectrical coupler IC2, and the input end of described photoelectrical coupler IC2 is the input end of silicon symmetrical switch circuit.

2, the output control device of suction cleaner according to claim 1, it is characterized in that: every half cycle starting point testing circuit of described single-phase alternating current is triode BG2, its base stage is connected on the AC power after the step-down, and its collector meets the interruption input signal end INT1 of single-chip microcomputer MCU1.