CN2161710Y

CN2161710Y - Electric safety controller for iron rolling-up gate

Info

Publication number: CN2161710Y
Application number: CN 93217248
Authority: CN
Inventors: 赖思鸣
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-07-06
Filing date: 1993-07-06
Publication date: 1994-04-13
Anticipated expiration: 2003-07-06

Abstract

The utility model relates to a safety controller for an electric iron rolling-up gate, and the utility model is designed to satisfy a purpose of keeping the safety of an electric iron rolling-up gate. The utility model is composed of a wireless emitting circuit, a wireless receiving circuit, a power supply circuit, a variable current circuit, a measurement and conversion circuit for motor current, a detection circuit for motor start switch and a micro computer control circuit. During power failure, a controller provides alternating current to maintain the normal operation of a motor, and people can be safely evacuated; when a lowered iron rolling-up gate presses the people and articles, the motor is controlled to stop, and then, the motor is controlled to rotate towards an opposite direction to enhance the iron rolling-up gate, and the people and the articles can be caused to escape from the dangerous situation. When the motor is overloaded or is short-circuited, the power supply of the motor is controlled and cut off to prevent accidental fire caused by electrical wires; the utility model causes the application of the iron rolling-up gate opened and closed through wireless remote control to be much more convenient and safe.

Description

Electric safety controller for iron rolling-up gate

The utility model relates to a kind of door of specific use, relates to a kind of control device of electric iron rolling door or rather.

The purpose that the iron rolling door is set is safe antitheft, for scheming the switching motion that electro-motor is controlled the iron rolling door that installs additional again easy to use, though under normal condition,, also relatively caused the use under the abnormal condition inconvenient even dangerous really for use provides convenience.For example, when having a power failure, general electric iron rolling door promptly can't be opened from field operation, though can open from in-house operation, it is hidden near the iron chains in the ceiling place cabinet to take off but must ascend a height, and the pulling iron chains just can be opened rolling door, because it is extremely slow to open the speed of rolling door, if generation, does not obviously have time enough because of the power failure that factors such as fire earthquake cause for escape; Again, this kind electric iron rolling door is descending to judge at closing time whether rolling door is pressed onto obstruction, therefore because of the play accident that causes electric iron rolling door to kill the people of making a noise of misoperation or children generation is also arranged; Again, electric iron rolling door exceeds the load of electric wire because of its motor short trouble or overload cause electric current to increase sharply, so that electric wire cocks off and leads to fire.

The purpose of this utility model is the deficiency of above-mentioned electric iron rolling door is made improvements, and design a kind of safety governor of electric iron rolling door, when having a power failure, still can supply alternating current to drive the action of iron rolling door, in order to safety exit to motor because of any reason of fire or other; When being depressured to people or thing under the electric iron rolling door, can be detectd side, stop the iron rolling door and continue to descend, and make the motor counter-rotating drive the iron rolling door segment distance that rises, people or thing are escaped danger; When motor overload or short circuit, can cut off the power supply of motor, in case cocking off, electric wire causes disaster.

Safety governor of the present utility model opens and closes the operation the wireless remote control of electric iron rolling door under carrying out normal operating conditions, can provide work to keep power supply to iron rolling door motor by control circuit output AC electricity when taking place to have a power failure; When being depressured to people or thing under the iron rolling door, control circuit is exported and is stopped electric iron rolling door and continue the control signal that descends and control the motor counter-rotating by the electric current that the detects CD-ROM drive motor phenomenon of uprushing; Control circuit is when motor overload or short circuit, and the driving power of motor is cut off in control.

Electric iron rolling door safety governor of the present utility model, comprise radio transmitter, wireless receiving circuit, it is characterized in that also comprising power supply circuit, convertor circuit, motor current measure change-over circuit, motor start switch testing circuit and microcomputer control circuit

Described power supply circuit comprises one group of DC power-supply circuit and keeps the low tension battery circuit of DC power-supply circuit work when having a power failure, keep the high tension battery circuit of current transformer work;

The code signal that described wireless receiving circuit stops, rising, descends by VT, D0, D1, D2, D3 output control electric iron rolling door is to microcomputer control circuit;

It is the alternating voltage of CD-ROM drive motor work that described current transformer is pressed inversion with the accumulator DC of described power supply circuit, and send power cut signal and motor load signal by LINE and LOAD end to described microcomputer control circuit;

Described motor current is measured change-over circuit, and the 1LOAD signal of current transformer motor current detector is converted to the TIMER end counting that frequency of oscillation is sent micro computer;

The open and close state that described motor start switch testing circuit will be operated the electromagnetic switch that electric iron rolling door rises, descends is converted to electric potential signal and send microcomputer control circuit by the START end;

Described microcomputer control circuit send power cut signal, starts current transformer work to current transformer by the INV end, by RY3, RY4, RY5 end to the motor start switch testing circuit send drive stop, the control signal of rising, down relay RY3, RY4, RY5 action, relay R Y3, RY4, RY5 contact and stop accordingly, rising, decline electromagnetic switch control line be in parallel.

Describe technology of the present utility model in detail below in conjunction with embodiment and accompanying drawing thereof.

Present embodiment is selected 110V electric main work and is selected the 154V direct-flow storage battery to power to current transformer, to adopting the user of 220V electric main, only need to change each component parameters, and its operating principle is identical.

Accompanying drawing 1 is an electric iron rolling door safety governor frame principle figure;

Accompanying drawing 2 is a radio transmitter electrical schematic diagram shown in Figure 1;

Accompanying drawing 3 is a wireless receiving circuit electrical schematic diagram shown in Figure 1;

Fig. 4 is the electrical schematic diagram of power supply circuit shown in Figure 1, convertor circuit;

Fig. 5 is the electrical schematic diagram that motor current shown in Figure 1 is measured change-over circuit, motor start switch testing circuit and microcomputer control circuit.

Referring to accompanying drawing 1, the electric iron rolling door safety governor is measured change-over circuit 5, motor start switch testing circuit 6 and microcomputer control circuit 7 by radio transmitter circuit 1, radio receiver circuit 2, power supply circuit 3, convertor circuit 4, motor current and is formed.

Radio receiver circuit 2, motor current are measured change-over circuit 5, motor start switch testing circuit 6 is connected with microcomputer control circuit 7 respectively, microcomputer control circuit 7 output control convertor circuits 4, power supply circuit 3 converts electric main the dc supply of controller to, and exports the Alternating Current Power Supply by the convertor circuit inversion when having a power failure.

Referring to accompanying

drawing

2,3, radio transmitter 1 shown in Figure 2 and wireless receiving circuit shown in Figure 32 are opened or are descended for the rising of straighforward operation electric iron rolling door in normal operation and close, be general radio transmission and radio reception technology, nor be design focal point of the present utility model place, the enforcement circuit only is provided, repeat no more its course of work, integrated chip IC1, IC2 are special-purpose demodulation reception and modulate emission device among the figure.

Referring to accompanying drawing 4, frame of broken lines 3 is a power supply circuit, and frame of broken lines 4 is a convertor circuit.

Power supply circuit 3 mainly comprise one group of DC power-supply circuit (+12V ,+5V ,-3V), keep DC power-supply circuit work the low tension battery circuit (+12V) and keep current transformer 4 work the high tension battery circuit (+154V).

Transformer T1 will exchange the step-down of 110V power supply and become to exchange 12V, rectifying and wave-filtering output dc voltage through rectification integrated circuit IC3, capacitor C 14, this DC voltage connect inductance L 5, relay coil RY1 respectively and through diode D3 for three-terminal voltage-stabilizing device IC4, IC5, export direct current+12V and direct current+5V power supply respectively ,+12V voltage carries out constant-voltage charge through current-limiting resistance R20 to 12V battery B1.+ 5V power supply is supplied with the working power of entire controller.During power failure, battery B1 powers to integrated regulator IC5 through diode D2,, make maintenance+5V power supply, the controller system circuit can be kept work.

Time base circuit IC6(555) and resistance R 21, R22, capacitor C 17, C18 constitute oscillating circuit, its output square wave converts to-3V direct current supply after via diode D4, D5, capacitor C 19, diode pumping circuit that C20 constituted.

Nor gate IC7-1, IC7-2, IC7-3, discharge and recharge and detect the charging circuit that IC 8, transistor Q6 and peripheral cell thereof constitute 154V battery B2.Battery B2 voltage is pressed to IC8 through R25, R26 branch voltage is provided, and when this voltage was lower than certain certain value, IC8 output low-potential signal was given nor gate IC7-3 one end; IC7-1, IC7-2 etc. constitute oscillator, and outputting oscillation signal is given the nor gate IC7-3 other end.When IC8 is output as low-potential signal, the IC7-3 outputting oscillation signal makes transistor Q6 constantly change its conducting, cut-off state with oscillator signal through resistance R 24, during the Q6 conducting, energy is stored in the inductance L 5, when Q6 ended, the L5 energy stored was charged to battery B2 through diode D6, capacitor C 22.Along with the rising of battery B2 voltage, the dividing point voltage of resistance R 25, R26 also raises, reach certain value after, IC8 exports high potential signal, nor gate IC7-3 closes the door and keeps electronegative potential output, Q6 remain off state no longer charges to battery B2.

Alternating current circuit 4 comprises square-wave oscillator, low pass filter, step-up transformer, rectification circuit, fluctuation limit device, power amplifier, thyristor bridge way switch, controllable silicon conducting circuits for triggering, oscillating circuit, removes 2 counters, AC charging and converter output dip switch, voltage comparator, motor current testing circuit and mains failure testing circuit.

IC 9, resistance R 27, R30, R46, capacitor C 23, transistor Q9 constitute square-wave oscillator, when the INV signal from microcomputer control circuit 7 is high potential (5V), the Q9 conducting, IC9 operate as normal output square-wave signal, become the sine-wave oscillation signal behind the low pass filter via resistance R 31, R32, capacitor C 24, C25 composition, become reference signal through step-up transformer T2 and rectification integrated circuit IC10 again.This reference signal one tunnel is sent power amplification circuit IC13 via the fluctuation limit device that resistance R 36, R37 and diode D8 constitute by resistance R 35, R38, diode D9, and through transistor Q7 amplified current.The VDS output voltage of transistor Q7 be resistance R 38 pressure drop VR38's-(R39/R40+1) doubly, and the voltage drop VR41 on the resistance R 41 is waveform after the full-wave rectification of a near sinusoidal ripple between two pairs of angle points of thyristor bridge way switch.Controllable silicon SCR 1-SCR4 is connected into the bridge circuit switch, and when the positive half cycle of input AC voltage, SCR1, SCR4 conducting are reduced to 1V until the R41 both end voltage and ended when following; When the negative half period of input AC voltage, SCR2, SCR3 conducting are reduced to 1V until the R41 both end voltage and are ended when following.The clock CK that removes 2 counter IC11 is sent on another road of reference signal of IC10 output end.

Remove the conducting circuits for triggering of 2 counter IC11, NAND gate IC12-3, IC12-4, transistor Q12, Q13, transformer T4, T5 formation thyristor bridge way switch SCR1-SCR4.NAND gate IC12-1, IC12-2, resistance R 49, capacitor C 26 constitute oscillator, when the INV from microcomputer control circuit 7 is electronegative potential (0V), transistor Q11 ends, IC12-1, IC12-2 normally vibrate the output square wave to the input of IC12-3, IC12-4, remove 2 counter IC11 output Q,

The signal of end makes the vibration square wave alternately by IC12-3, IC12-4, and when the positive half cycle of AC waveform, the Q end is high potential, and oscillator signal is through IC12-3, C27 to Q12, the Q12 conducting, and transformer T4 produces trigger pulse triggers controllable silicon SCR 1, SCR4 conducting; When AC waveform negative half period, End is for high potential, and oscillator signal is through IC12-4, C28 to Q13, the Q13 conducting, and transformer T5 produces trigger pulse triggers controllable silicon SCR 3, SCR2 conducting.

Relay tip RY1, RY2 are the output dip switch of civil power and current transformer 4.When the civil power normal power supply, because the coil of RY1 is connected on the output of rectification integrated circuit IC3, so the RY1 closure is used for motor by its contact output AC110V power supply.When having a power failure, contact RY1 auto-cutout, microcomputer control circuit INV output this moment 0V, oppositely make transistor Q10 conducting through nor gate IC7-4, the coil electricity action of relay R Y2, make its contact RY2 connect, the alternating current that AC110V end output current transformer 4 is produced also can move motor when having a power failure.

IC 14 is a voltage comparator among the figure, (VDS＞5V of Q7 when the voltage of power amplifier IC13 output surpasses 5V, have big electric current to flow through), represent that then AC110V output has connected load and flow through big electric current, IC14 output LOAD signal is to microcomputer control circuit 7.

Transformer T3, resistance R 42 constitute the motor current detector, utilize resistance R 42 to produce pressure drop by load current, and this pressure drop is delivered to motor current through the output 1LOAD of transformer T3 and measured change-over circuit 5, to measure the load current size.

Transistor Q8, resistance R 43, R44, R45 constitute the mains failure testing circuit.

During normal power supply, civil power AC110V makes transistor Q8 conducting after transformer T1, rectification integrated circuit IC3 and R44, R45 dividing potential drop, and the LINE end that connects microcomputer control circuit is 0 current potential, and the notice microcomputer circuit has power supply; When having a power failure, Q8 ends, LINE output+5V, and the notice microcomputer circuit has a power failure.

Referring to accompanying drawing 5, motor current is measured change-over circuit 5, voltage/frequency (V/F) converter that comprises amplifier, peak detector, low pass filter, snubber and be made of two stage amplifer device, monostable flipflop.

IC 16, resistance R 52-R54 constitutes amplifier, 1LOAD signal from current transformer 4 motor current detectors, after amplifying, IC16 exports to by diode D13, resistance R 55, the peak detector that capacitor C 29 constitutes, again via resistance R 56, obtain the DC voltage that desire measures behind the low pass filter that capacitor C 30 constitutes, and then through the output of IC17 buffering, IC 18-IC20 and peripheral cell thereof constitute voltage/frequency (V/F) converter, wherein IC20 is the monostable flipflop that is connected into by time base circuit, can produce a fixed pulse signal, one the tunnel through diode D14, resistance R 58 feedback input IC18, and discharge a fixing electric weight, the negative voltage that IC18 output is fixed to capacitor C 31.The output voltage signal of IC17 is imported IC18 through R57, and charge to C31, when the C31 output that causes IC18 of charging gradually rise to surpass 0V when above by negative voltage gradually, IC19 output will be transferred to by 5V-3V, make IC20 produce fixed pulse feedback input IC18, and, so go round and begin again to produce a frequency values that changes with the load current size again to the fixing discharge of C31; The pulse signal of IC20 output is the TIMER end that frequency of oscillation is imported microcomputer control circuit simultaneously, by the fix counting of time of the internal counter of micro computer, to be converted to load current value.

Motor start switch testing circuit 6 comprises square-wave oscillator, voltage comparator, transformer and relay circuit.

IC 21, resistance R 65-R68, capacitor C 34 constitute square-wave oscillator, the fixed frequency oscillator signal of output through the elementary winding of transformer T6 to voltage comparator ic 22+end, when console switch (electromagnetic switch that operation iron rolling door rises, descends) when not being manipulated into closure, the secondary windings zero load of transformer T6, the AC resistance of the elementary winding of T6 is very big, make IC21 output through the elementary winding of T6 and the resulting magnitude of voltage of R69 dividing potential drop less than partial pressure value by the divider that R70, R71 formed; And when console switch was manipulated into closure, the T6 secondary windings formed short circuit, and the AC resistance of its elementary winding becomes very little, makes the IC22+ terminal voltage greater than the one terminal voltage, and IC22 exports the START end of high potential signal to microcomputer control circuit at this moment.

Contact RY3-RY5 in the relay circuit connects the electromagnetic switch that the manipulation electric iron rolling door stops STOP, rising UP, decline DOWN respectively, wherein the COM output point is in parallel with the COM control line of electromagnetic switch, the STOP output point is in parallel with the STOP control line of electromagnetic switch, the UP output point is in parallel with the UP control line of electromagnetic switch, and the DOWN output point is in parallel with the DOWN control line of electromagnetic switch.

Microcomputer control circuit 7, IC15 constitutes by chip microprocessor, can carry out: (one) detects the motor load electric current, when being depressured to people or thing under the iron rolling door, motor current is uprushed, and micro computer RY3 end output signal makes transistor Q14 conducting, relay R Y3 action, its normally closed contact RY3 open circuit descends to stop rolling door, and micro computer RY4 termination output signal and made transistor Q15 conducting, relay R Y4 action, normal opened contact RY4 closure, the iron rolling door segment distance that risen stops action again; Be stuck when causing the motor current overrate a lot of when the iron rolling door in addition, immediately the stop supplies motor power.(2) receive the decoded signal of radio receiver circuit 2, with control electric iron rolling door " go up, stop, down " action, its motion characteristic is, when VT value during in rising edge, DO=1, contact RY4 move into closed circuit shape, the former open circuit shape of recovery after 1 second; When VT value during in rising edge, D1=1, contact RY5 moves into closed circuit shape, recovers former open circuit shape after 1 second; When VT value during in rising edge, D3=1, contact RY3 moves into the open circuit shape, when " go up, stop, down " three operated keys are pressed, begins the closed circuit shape that recovers original.(3) when civil power stops, starting convertor circuit 4, with the needed working power of feed motor.Its action feature is, works as LINE=1, STRAT=1 or LINE=1, and when VT was positioned at rising edge, INV exported electronegative potential, to start convertor circuit 4 work; When LOAD end input electronegative potential when stopping (be motor), INV output becomes high potential, to stop the work of convertor circuit 4.

By the foregoing description accompanying drawing and analyze as can be known, the utility model really can be realized goal of the invention, has improved the practicality and the safety of electric iron rolling door.

Claims

1, a kind of electric iron rolling door safety governor comprises radio transmitter, wireless receiving circuit, it is characterized in that also comprising power supply circuit, convertor circuit, motor current measure change-over circuit, motor start switch testing circuit and microcomputer control circuit,

2, electric iron rolling door safety governor according to claim 1, it is characterized in that described convertor circuit comprises square-wave oscillator, low pass filter, step-up transformer, rectifier, the fluctuation limit device, power amplifier, the thyristor bridge way switch, controllable silicon conducting circuits for triggering, oscillating circuit, remove 2 counters, AC civil power and current transformer output dip switch, voltage comparator, motor current detector and mains failure testing circuit, the vibration square-wave signal is converted to the square-wave oscillator of reference signal, low pass filter, step-up transformer, rectifier is linked in sequence, the reference signal one tunnel of rectifier output is through the fluctuation limit device, power amplifier connects thyristor bridge way switch and voltage comparator, thyristor bridge way switch output serial connection AC civil power and current transformer output dip switch and motor current detector connect motor, and motor current detector output 1LOAD signal to motor current is measured change-over circuit; Another road of reference signal of rectifier output connects removes 2 counter clock ends, connect controllable silicon conducting circuits for triggering after being subjected to the oscillating circuit output of microcomputer control circuit INV signal controlling and making up through reference signal except that 2 counters, 2 frequency divisions, microcomputer control circuit INV signal is also controlled described square-wave oscillator and AC civil power and the work of current transformer output dip switch, described mains failure testing circuit is subjected to described power supply circuit rectifier output control, output power cut signal LINE is to microcomputer control circuit, and voltage comparator output expression motor changes, the LOAD signal that stops is to microcomputer control circuit.

3, electric iron rolling door safety governor according to claim 1, it is characterized in that described motor current measure change-over circuit by the 1LOAD signal with the output of current transformer motor current testing circuit be converted to the amplifier, peak detector, low pass filter, snubber of frequency of oscillation, the electric voltage/frequency converter that is made of two stage amplifer device and monostable flipflop is linked in sequence and constitutes, electric voltage/frequency converter output connects microcomputer control circuit TIMER end.

4, electric iron rolling door safety governor according to claim 1, it is characterized in that described motor start switch testing circuit comprises the drive circuit of square-wave oscillator, voltage comparator, transformer and relay R Y3, RY4, RY5, square-wave oscillator output elementary winding of series transformer and voltage comparator, voltage comparator output connects microcomputer control circuit START end, transformer secondary output winding two ends are connected with relay R Y4, RY5 contact respectively, and relay R Y3, RY4, RY5 drive circuit are controlled by microcomputer control circuit.

5, electric iron rolling door safety governor according to claim 1 is characterized in that described microcomputer control circuit is made of chip microprocessor.

6, electric iron rolling door safety governor according to claim 1, the high tension battery circuit that it is characterized in that described power supply circuit, comprise high tension battery, the battery charging circuit that is connected with rectifier output, the resitstance voltage divider that is connected with battery, what be connected with the resitstance voltage divider dividing point discharges and recharges testing circuit, discharges and recharges testing circuit output control battery charging circuit.