CN202172260U

CN202172260U - Intelligent motor control device

Info

Publication number: CN202172260U
Application number: CN2011202188445U
Authority: CN
Inventors: 傅木耳
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-06-27
Filing date: 2011-06-27
Publication date: 2012-03-21
Anticipated expiration: 2021-06-27

Abstract

The utility model relates to the technical field of motors, particularly to an intelligent motor control device. The intelligent motor control device comprises a magnetic sensor circuit, a three-phase voltage phase failure detection circuit, a one-chip microcomputer control circuit, a motor driving circuit and a frequency selecting amplifier circuit, wherein an output end of the magnetic sensor circuit is connected with an input end of a trigger circuit, output ends of the trigger circuit and the three-phase voltage phase failure detection circuit are respectively connected with a carrier signal phase lock circuit and the motor driving circuit via the one-chip microcomputer control circuit, an output end of the carrier signal phase lock circuit is connected with a carrier signal decoding circuit via the frequency selecting amplifier circuit, the magnetic sensor circuit is used for detecting wind wheels of an exhaust fan of the motor, and the trigger circuit is used for detecting power on work states of the exhaust fan. The control device is connected with a PC machine via one-chip microcomputer control output, so states of the motor can be monitored remotely, and normal operation of the motor can be guaranteed.

Description

The intelligent electric machine control device

Technical field

The utility model relates to technical field of motors, particularly be a kind of intelligent electric machine control device.

Background technology

Motor is widely used in dynamical system, and motor is if open-phase fault will cause the motor phase shortage to burn out; Influence the normal operation of motor; And the electromechanics fault also can cause motor not move, so to the comprehensive detection of motor, have considerable effect.

The utility model content

The purpose of the utility model is to overcome above-mentioned deficiency, and a kind of intelligent electric machine control device is provided.The utility model solves the technical scheme that its technical problem adopted: the intelligent electric machine control device; Comprise magneto-dependent sensor circuit, phase of three-phase voltage testing circuit, single chip machine controlling circuit, motor-drive circuit and frequency selective amplifier circuit; The output of said magneto-dependent sensor circuit is connected to the input of circuits for triggering; The output of circuits for triggering and phase of three-phase voltage testing circuit is connected to carrier signal phase lock circuitry and motor-drive circuit through single chip machine controlling circuit respectively, and the output of said carrier signal phase lock circuitry is connected to the carrier signal decoding circuit through the frequency selective amplifier circuit.

Said magneto-dependent sensor circuit adopts DN834 magneto-dependent sensor acquired signal.

Said circuits for triggering are monostable flipflop.

Said phase of three-phase voltage testing circuit is delivered to the photoelectricity coupling circuit respectively by the output signal in phase voltage loop and constitutes after step-down, current limliting, dividing potential drop, filtering signal are handled.

Said carrier signal phase lock circuitry is made up of LM567 tone decoder U1 and peripheral electric capacity 2C1, resistance 2R1, resistance 2R2 thereof.

Said frequency selective amplifier circuit is made up of elementary L1, electric capacity 2C2, the capacitor 2C3 of triode VT1, audio frequency transformer T, and sends data-signal through telephone wire to the carrier signal decoding circuit through secondary L2, the electric capacity 2C4 of audio frequency transformer T.

Said carrier signal decoding circuit is made up of the audio frequency transformer T1, LM567 ATD U2, triode VT2 and the LED that connect successively.

Through adopting above-mentioned technical scheme; The beneficial effect of the utility model is: the object that the magneto-dependent sensor circuit is used to detect the motor exhaust blower changes fan blade, circuits for triggering as the energising operating state that detects exhaust blower; Be connected to PC through Single-chip Controlling output; Reach the state of remote monitoring motor, guarantee the normal operation of motor.

Description of drawings

Fig. 1 is the frame assumption diagram of the utility model;

Fig. 2 is the circuit theory diagrams of the utility model.

Embodiment

As shown in Figure 1; The intelligent electric machine control device of the utility model; Comprise magneto-dependent sensor circuit 1, phase of three-phase voltage testing circuit 2, single chip machine controlling circuit 3, motor-drive circuit 5 and frequency selective amplifier circuit 7; The output of said magneto-dependent sensor circuit 1 is connected to the input of circuits for triggering 11; The output of circuits for triggering 11 and phase of three-phase voltage testing circuit 2 is connected to carrier signal phase lock circuitry 6 and motor-drive circuit 5 through single chip machine controlling circuit 3 respectively, and the output of said carrier signal phase lock circuitry 6 is connected to carrier signal decoding circuit 8 through frequency selective amplifier circuit 7.

As shown in Figure 2; By DN834 magneto-dependent sensor IC2 acquired signal; Can be the high-low level square-wave pulse signal with the signal transition of magnetic field size, when blower fan when rotating, the 2nd, the 3 pin output pulse signals of DN834 magneto-dependent sensor IC2; Through monostable flipflop IC3 internal trigger signal output Q=1, explain that blower fan is in normal operation this moment.When the fan blade of blower fan does not rotate; The 2nd, 3 pin of DN834 magneto-dependent sensor IC2 do not have pulse signal output; Monostable flipflop IC3 does not just have triggering signal yet, and this signal is input to the 8th pin of single-chip microcomputer IC1 through resistance R 3 current limlitings;, single-chip microcomputer IC1 internal signal sends control signal after handling judgement; Multivibrator by LM567 tone decoder U1 and peripheral electric capacity 2C1, resistance 2R1, resistance 2R2 thereof constitute is formed phase lock circuitry, and its frequency of oscillation is by the parameter determining of electric capacity 2C1, resistance 2R1, and carrier frequency is adjusted in the 150-300KHZ scope.Elementary L1, electric capacity 2C2, capacitor 2C3 by triode VT1, audio frequency transformer T constitute the frequency selective amplifier circuit; The 27th pin output high level signal by single-chip microcomputer IC1; Make LM567 tone decoder U1 obtain working power; LM567 tone decoder U1 starts working; Be coupled on local telephone network speaking wire or the AC network AC220V power line and sent by secondary L2, the electric capacity 2C4 of audio frequency transformer T, send data-signal to the carrier wave main frame, the audio frequency transformer T1 that connects successively, LM567 ATD U2, triode VT2, LED constitute decoding circuit; The time constant of resistance 1R1, electric capacity 1C5 network has determined the voltage controlled oscillator of LM567 ATD U2; When the carrier wave extension set when main frame sends 150-300KHZ carrier wave command signal, be coupled to the secondary L3 of audio frequency transformer T through electric capacity 1C1, audio frequency transformer T1, its secondary L3, electric capacity 1C2, electric capacity 1C3 form a carrier wave frequency-selective network.Signal after the frequency-selecting is coupled to the 3rd pin signal input part of LM567 ATD U2 through electric capacity 1C4, after LM567 ATD U2 decoding, by its 8th pin output output low level; Make triode VT2 conducting; LED is lighted, and the carrier data signal of receiving extension set is described, the fan blade mechanical breakdown has appearred in expression; The control room operating personnel should be in time to Fault Processing.

By the phase voltage of the output in L1, N or L2, N and L3, N phase voltage loop respectively through electric capacity 3C1,3C2,3C3 step-down, 3R1,3R2,3R3 current limliting, 3R4,3R7,3R8 dividing potential drop; After 3C4,3C6, the 3C6 filtering, the output dc voltage signal is input to the input of photoelectricity coupling circuit U3 again; Make photoelectricity coupling circuit U3 conducting, be output as low level signal, this signal is input to the 37th pin I/O end of single-chip microcomputer IC1; Be judged as phase voltage through single-chip microcomputer IC1 internal processes and be in normal condition, do not send control signal, when any one among L1, N or L2, N and L3, the N do not constitute phase voltage AC220V mutually; Explain to occur certain phase phase shortage, photoelectricity coupling circuit U3 output also is in high level state, and the 37th pin I/O end that this signal is input to single-chip microcomputer IC1 also is high level; Be judged as phase place through single-chip microcomputer IC1 internal processes and be in non-full-phase state, by the 4th pin output low level signal of single-chip microcomputer IC1, through resistance R 2 current limlitings; Controllable silicon SCR is ended; The motor M dead electricity, motor quits work, thus the protection motor.

An above-described preferred embodiment that is merely the utility model can not limit the scope that this practicality is implemented, and every equalization of being done according to the utility model claim changes and decorates, and all should still belong in the scope that the utility model contains.

Claims

1. intelligent electric machine control device; It is characterized in that: comprise magneto-dependent sensor circuit (1), phase of three-phase voltage testing circuit (2), single chip machine controlling circuit (3), motor-drive circuit (5) and frequency selective amplifier circuit (7); The output of said magneto-dependent sensor circuit (1) is connected to the input of circuits for triggering (11); The output of circuits for triggering (11) and phase of three-phase voltage testing circuit (2) is connected to carrier signal phase lock circuitry (6) and motor-drive circuit (5) through single chip machine controlling circuit (3) respectively, and the output of said carrier signal phase lock circuitry (6) is connected to carrier signal decoding circuit (8) through frequency selective amplifier circuit (7).

2. intelligent electric machine control device according to claim 1 is characterized in that: said magneto-dependent sensor circuit (1) adopts DN834 magneto-dependent sensor acquired signal.

3. intelligent electric machine control device according to claim 1 is characterized in that: said circuits for triggering (11) are monostable flipflop.

4. intelligent electric machine control device according to claim 1 is characterized in that: said phase of three-phase voltage testing circuit (2) is delivered to the photoelectricity coupling circuit respectively by the output signal in phase voltage loop and constitutes after step-down, current limliting, dividing potential drop, filtering signal are handled.

5. intelligent electric machine control device according to claim 1 is characterized in that: said carrier signal phase lock circuitry (6) is made up of LM567 tone decoder U1 and peripheral electric capacity 2C1, resistance 2R1, resistance 2R2 thereof.

6. intelligent electric machine control device according to claim 1; It is characterized in that: said frequency selective amplifier circuit (7) is made up of elementary L1, electric capacity 2C2, the capacitor 2C3 of triode VT1, audio frequency transformer T, and sends data-signal through telephone wire to carrier signal decoding circuit (8) through secondary L2, the electric capacity 2C4 of audio frequency transformer T.

7. according to claim 1 or 6 described intelligent electric machine control device, it is characterized in that: said carrier signal decoding circuit (8) is made up of the audio frequency transformer T1, LM567 ATD U2, triode VT2 and the LED that connect successively.