CN212518386U

CN212518386U - Output overload protection circuit of fire control electric window opener control equipment

Info

Publication number: CN212518386U
Application number: CN202021408752.9U
Authority: CN
Inventors: 李振; 莫兰; 巫小梅; 朱天平
Original assignee: Shenzhen Zebao Intelligent Technology Co ltd
Current assignee: Shenzhen Zebao Intelligent Technology Co ltd
Priority date: 2020-07-15
Filing date: 2020-07-15
Publication date: 2021-02-09
Anticipated expiration: 2030-07-15

Abstract

The utility model discloses an output overload protection circuit of electronic windowing machine control equipment of fire control, include: the device comprises a single chip microcomputer, a control output circuit connected with the single chip microcomputer, an overload protection circuit connected with the control output circuit, a plurality of forward and reverse rotation output control circuits connected with the overload protection circuit, and a motor connected with the forward and reverse rotation output control circuits. The utility model discloses an add overload protection circuit and positive reverse output control circuit in the circuit of electronic machine of windowing, thereby guarantee that electronic machine control equipment of windowing can not damage because of the short circuit of machine terminal equipment of windowing, overload, bad phenomena such as instantaneous heavy current pulse, ensure when taking place the conflagration dangerous situation, electronic machine control equipment of windowing can normal work, control is windowed machine terminal equipment and is pushed the window open, guarantee that the smog in the scene of a fire can be discharged outdoor, personnel do not burn or suffocate because of dense smoke in the guarantee scene of a fire, strive for more times for rescue work.

Description

Output overload protection circuit of fire control electric window opener control equipment

Technical Field

The utility model relates to a fire control safety equipment field especially relates to an output overload protection circuit of electronic machine controlgear that windows of fire control.

Background

A fire-fighting window opener is a fire-fighting safety device. Referring to fig. 1, the working modes of the conventional fire-fighting window opener are as follows: when a fire disaster happens, the fire alarm control system transmits a fire protection linkage signal to the fire protection electric window opener control device through controlling the fire protection linkage module, the control device converts an input AC220V power supply into a DC24V power supply after receiving the signal and outputs the power supply to the fire protection window opener, and the window opener is started to execute window opening action, so that indoor smoke can be discharged outdoors through a window, people trapped in a fire scene are prevented from being burnt or suffocated due to dense smoke, and more time is won for rescue work.

However, in practical engineering use, one fire-fighting electric window opener control device may access a plurality of electric window opener terminals, and the access line is too long. When the control equipment receives the windowing information and executes windowing action output, phenomena such as partial locking, short circuit and the like of the windowing machine easily occur, and therefore the output current of the windowing control equipment instantly reaches or exceeds the rated output of the windowing control equipment. The existing window opener control equipment on the market adopts the overload protection function of a power supply to realize overload protection, when the phenomenon occurs, overlarge current can directly pass through a mainboard of the window opener control equipment and then reach a switching power supply, and irreparable damage is easily caused to the mainboard of the window opener control equipment.

Accordingly, the prior art is deficient and needs improvement.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the not enough of prior art, provide an output overload protection circuit of fire control electric window opener control equipment.

The technical scheme of the utility model as follows: there is provided an output overload protection circuit of a fire-fighting electric window opener control device, comprising: the device comprises a single chip microcomputer, a control output circuit connected with the single chip microcomputer, an overload protection circuit connected with the control output circuit, a plurality of forward and reverse rotation output control circuits connected with the overload protection circuit, and a motor connected with the forward and reverse rotation output control circuits.

Further, the overload protection circuit includes: a relay K1, a triode Q1, a triode Q2, a resistor R2, a potentiometer W1, an AC contactor KM1, an AC contactor KM2 and an AC contactor KM4, wherein one end of the relay K1 is connected with a control output circuit, the other end of the relay K1 is connected with a collector of the triode Q1 and a base of the triode Q2, one end of the resistor R2 is connected with the control output circuit, the other end of the resistor R2 is connected with an emitter of the triode Q2 and one end of the AC contactor KM2, a base of the triode Q1 is connected with a collector of the triode Q2, one end of the potentiometer W1, one end of the AC contactor KM4 and the other end of the AC contactor KM2, an emitter of the triode Q1, the other end of the AC contactor KM4, a middle end of the potentiometer W1 and the other end of the AC contactor KM1 are grounded, the other end of the alternating current contactor KM1 is connected with a forward and reverse rotation output control circuit, and the triode Q1 and the triode Q2 control the on-off state of the relay K1.

Further, the overload protection circuit further includes: the LED driving circuit comprises a light-emitting tube LED1, a light-emitting tube LED2 and a resistor R1, wherein the anode of the light-emitting tube LED1 is connected with a control output circuit, the anode of the light-emitting tube LED2 is connected with a forward and reverse rotation output control circuit, one end of the resistor R1 is connected with the cathodes of a light-emitting tube LED1 and a light-emitting tube LED2, and the other end of the resistor R1 is grounded.

Further, the overload protection circuit further comprises an anti-interference capacitor CX1, one end of the anti-interference capacitor CX1 is connected with the base of the triode Q1, and the other end of the anti-interference capacitor CX1 is grounded.

Further, the positive and negative rotation output control circuit includes: the overvoltage protection circuit comprises a connecting terminal, a varistor ZNR1, an anti-interference capacitor CX2, an alternating current contactor KM3 and an alternating current contactor KM5, wherein the connecting terminal is connected with an overload protection circuit, one end of the connecting terminal is connected with one end of a varistor ZNR1, one end of an anti-interference capacitor CX2 and a 3 rd pin of the alternating current contactor KM3, the other end of the connecting terminal is connected with the other end of the varistor ZNR1, the other end of the anti-interference capacitor CX2 and a 3 rd pin of the alternating current contactor KM5, a 1 st pin of the alternating current contactor KM3 is connected with one pole of a motor, a 2 nd pin of the alternating current contactor KM5 is connected with the other pole of the motor, and a 2 nd pin of the alternating current contactor KM3 and a 1.

The utility model discloses still include return circuit output current detection circuitry, return circuit output current detection circuitry with overload protection circuit connects.

The utility model discloses still include: and the voltage stabilizing circuit, the filter circuit, the alarm acousto-optic indicating circuit, the key information input circuit and the information processing circuit are connected with the singlechip.

Further, the filter circuit includes: the remote control circuit comprises an RC filter circuit connected with the single chip microcomputer, an optical coupling isolation filter circuit connected with the RC filter circuit, and a signal input source connected with the optical coupling isolation filter circuit.

Further, the information processing circuit includes: the operational amplifier circuit is connected with the single chip microcomputer, and the internal information processing unit is connected with the operational amplifier circuit.

Adopt above-mentioned scheme, the utility model discloses an add overload protection circuit and positive reverse output control circuit in the circuit of electronic machine of windowing, thereby guarantee that electronic window machine control equipment can not damage because of the short circuit of the quick-witted terminal equipment of windowing, overload, bad phenomena such as instantaneous heavy current pulse, ensure when taking place the conflagration dangerous situation, electronic window machine control equipment can normal work, control window machine terminal equipment of windowing pushes the window open, guarantee that the smog in the scene of a fire can discharge outdoor, personnel do not burn or suffocate because of dense smoke in the guarantee scene of a fire, strive for more time for rescue work.

Drawings

Fig. 1 is a circuit connection block diagram of a conventional windowing machine control device.

Fig. 2 is a circuit connection block diagram of the present invention.

Fig. 3 is a circuit schematic of an overload protection circuit.

Fig. 4 is a circuit schematic diagram of a forward and reverse rotation output control circuit connection circuit.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Referring to fig. 2 to 4, the present invention provides an output overload protection circuit of a fire-fighting electric window opener control device, comprising: the device comprises a single chip microcomputer, a control output circuit connected with the single chip microcomputer, an overload protection circuit connected with the control output circuit, a plurality of forward and reverse rotation output control circuits connected with the overload protection circuit, and a motor connected with the forward and reverse rotation output control circuits.

The overload circuit includes: a relay K1, a triode Q1, a triode Q2, a resistor R2, a potentiometer W1, an AC contactor KM1, an AC contactor KM2 and an AC contactor KM4, wherein one end of the relay K1 is connected with a control output circuit, the other end of the relay K1 is connected with a collector of the triode Q1 and a base of the triode Q2, one end of the resistor R2 is connected with the control output circuit, the other end of the resistor R2 is connected with an emitter of the triode Q2 and one end of the AC contactor KM2, a base of the triode Q1 is connected with a collector of the triode Q2, one end of the potentiometer W1, one end of the AC contactor KM4 and the other end of the AC contactor KM2, an emitter of the triode Q1, the other end of the AC contactor KM4, a middle end of the potentiometer W1 and the other end of the AC contactor KM1 are grounded, the other end of the alternating current contactor KM1 is connected with a forward and reverse rotation output control circuit, and the triode Q1 and the triode Q2 control the on-off state of the relay K1.

The overload protection circuit further includes: the LED driving circuit comprises a light-emitting tube LED1, a light-emitting tube LED2 and a resistor R1, wherein the anode of the light-emitting tube LED1 is connected with a control output circuit, the anode of the light-emitting tube LED2 is connected with a forward and reverse rotation output control circuit, one end of the resistor R1 is connected with the cathodes of a light-emitting tube LED1 and a light-emitting tube LED2, and the other end of the resistor R1 is grounded.

The overload protection circuit further comprises an anti-interference capacitor CX1, one end of the anti-interference capacitor CX1 is connected with the base of the triode Q1, and the other end of the anti-interference capacitor CX1 is grounded.

The positive and negative rotation output control circuit comprises: the overvoltage protection circuit comprises a connecting terminal, a varistor ZNR1, an anti-interference capacitor CX2, an alternating current contactor KM3 and an alternating current contactor KM5, wherein the connecting terminal is connected with an overload protection circuit, one end of the connecting terminal is connected with one end of a varistor ZNR1, one end of an anti-interference capacitor CX2 and a 3 rd pin of the alternating current contactor KM3, the other end of the connecting terminal is connected with the other end of the varistor ZNR1, the other end of the anti-interference capacitor CX2 and a 3 rd pin of the alternating current contactor KM5, a 1 st pin of the alternating current contactor KM3 is connected with one pole of a motor, a 2 nd pin of the alternating current contactor KM5 is connected with the other pole of the motor, and a 2 nd pin of the alternating current contactor KM3 and a 1. Through inserting interference killing feature CX2, can hinder and absorb instantaneous heavy current, avoid starting the influence of instantaneous current pulse.

The utility model discloses still include return circuit output current detection circuitry, return circuit output current detection circuitry with overload protection circuit connects. The loop output current detection circuit is used for detecting the instantaneous value of the output current in the loop, and plays a role in safety monitoring.

The utility model discloses still include: and the voltage stabilizing circuit, the filter circuit, the alarm acousto-optic indicating circuit, the key information input circuit and the information processing circuit are connected with the singlechip. When the electric window opener control equipment receives the fire-fighting linkage signal, the single chip microcomputer sends corresponding signals to the circuit modules, and after the alarm acousto-optic indicating circuit receives the signals, the connected warning lamp and the connected loudspeaker can be started to warn field personnel to take refuge in time. Through the keys connected with the case information input circuit, various parameters and functions of the electric express boat and the control equipment can be set or debugged.

The filter circuit includes: the remote control circuit comprises an RC filter circuit connected with the single chip microcomputer, an optical coupling isolation filter circuit connected with the RC filter circuit, and a signal input source connected with the optical coupling isolation filter circuit.

The information processing circuit includes: the operational amplifier circuit is connected with the single chip microcomputer, and the internal information processing unit is connected with the operational amplifier circuit.

In this embodiment, the transistor Q1 and the transistor Q2 of the overload protection circuit control the switch of the relay K1, and the potentiometer W1 is responsible for adjusting the output power, so as to implement the overload protection function. When current is output, the alternating current contactor KM2 is disconnected, a power supply flows through the current-limiting resistor R2 and then enters the triode Q2, so that the triode Q2 obtains high level, saturation conduction is realized, the relay K1 is attracted and conducted, the output end normally outputs a direct current power supply, and the light-emitting tube emits red light. When the relay K1 is pulled in, the base electrode of the triode Q1 is pulled down to be low level, the triode Q1 is conducted, the triode Q2 keeps the conducting state, and the whole circuit works normally. When the output end is short-circuited or the current is larger than the rated output value, the input voltage is pulled down to be close to 0V, the triode Q2 exits from the saturation conduction state, the relay K1 is released, the output is disconnected, the overload protection effect is achieved, the damage of the single chip microcomputer due to overlarge current is avoided, the damage of the control equipment of the electric window opener due to the short circuit, overload, instantaneous large-current pulse and other phenomena caused by adverse factors under the complex engineering use environment is avoided, the electric window opener cannot be started in time due to overload, and the personal and property safety of the site is guaranteed.

To sum up, the utility model discloses an add overload protection circuit and positive reverse output control circuit in the circuit of electronic machine of windowing to guarantee that electronic window machine control equipment can not damage because of bad phenomena such as the short circuit of windowing machine terminal equipment, overload, instantaneous heavy current pulse, ensure when taking place the conflagration dangerous situation, work that electronic window machine control equipment can be normal, control window machine terminal equipment of windowing pushes the window open, guarantee that the smog in scene of a fire can discharge outdoor, personnel do not burn or suffocate because of dense smoke in the guarantee scene of a fire, strive for more time for rescue work.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. An output overload protection circuit of a fire-fighting electric window opener control device is characterized by comprising: the device comprises a single chip microcomputer, a control output circuit connected with the single chip microcomputer, an overload protection circuit connected with the control output circuit, a plurality of forward and reverse rotation output control circuits connected with the overload protection circuit, and a motor connected with the forward and reverse rotation output control circuits.

2. The output overload protection circuit of a fire protection electric window opener control device according to claim 1, wherein the overload protection circuit includes: a relay K1, a triode Q1, a triode Q2, a resistor R2, a potentiometer W1, an AC contactor KM1, an AC contactor KM2 and an AC contactor KM4, wherein one end of the relay K1 is connected with a control output circuit, the other end of the relay K1 is connected with a collector of the triode Q1 and a base of the triode Q2, one end of the resistor R2 is connected with the control output circuit, the other end of the resistor R2 is connected with an emitter of the triode Q2 and one end of the AC contactor KM2, a base of the triode Q1 is connected with a collector of the triode Q2, one end of the potentiometer W1, one end of the AC contactor KM4 and the other end of the AC contactor KM2, an emitter of the triode Q1, the other end of the AC contactor KM4, a middle end of the potentiometer W1 and the other end of the AC contactor KM1 are grounded, the other end of the alternating current contactor KM1 is connected with a forward and reverse rotation output control circuit, and the triode Q1 and the triode Q2 control the on-off state of the relay K1.

3. The output overload protection circuit of the fire protection electric window opener control device of claim 2, wherein the overload protection circuit further comprises: the LED driving circuit comprises a light-emitting tube LED1, a light-emitting tube LED2 and a resistor R1, wherein the anode of the light-emitting tube LED1 is connected with a control output circuit, the anode of the light-emitting tube LED2 is connected with a forward and reverse rotation output control circuit, one end of the resistor R1 is connected with the cathodes of a light-emitting tube LED1 and a light-emitting tube LED2, and the other end of the resistor R1 is grounded.

4. The output overload protection circuit of the fire-fighting electric window opener control device according to claim 2, wherein the overload protection circuit further comprises an anti-interference capacitor CX1, one end of the anti-interference capacitor CX1 is connected with the base of the triode Q1, and the other end of the anti-interference capacitor CX1 is grounded.

5. The output overload protection circuit of a fire protection electric window opener control device according to claim 1, wherein the forward and reverse rotation output control circuit includes: the overvoltage protection circuit comprises a connecting terminal, a varistor ZNR1, an anti-interference capacitor CX2, an alternating current contactor KM3 and an alternating current contactor KM5, wherein the connecting terminal is connected with an overload protection circuit, one end of the connecting terminal is connected with one end of a varistor ZNR1, one end of an anti-interference capacitor CX2 and a 3 rd pin of the alternating current contactor KM3, the other end of the connecting terminal is connected with the other end of the varistor ZNR1, the other end of the anti-interference capacitor CX2 and a 3 rd pin of the alternating current contactor KM5, a 1 st pin of the alternating current contactor KM3 is connected with one pole of a motor, a 2 nd pin of the alternating current contactor KM5 is connected with the other pole of the motor, and a 2 nd pin of the alternating current contactor KM3 and a 1.

6. The output overload protection circuit of a fire protection electric window opener control device according to claim 1, further comprising a loop output current detection circuit connected to the overload protection circuit.

7. The output overload protection circuit of a fire protection electric window opener control device according to claim 1, further comprising: and the voltage stabilizing circuit, the filter circuit, the alarm acousto-optic indicating circuit, the key information input circuit and the information processing circuit are connected with the singlechip.

8. The output overload protection circuit of the fire protection electric window opener control device of claim 7, wherein the filter circuit comprises: the remote control circuit comprises an RC filter circuit connected with the single chip microcomputer, an optical coupling isolation filter circuit connected with the RC filter circuit, and a signal input source connected with the optical coupling isolation filter circuit.

9. The output overload protection circuit of the fire-fighting electric window opener control device according to claim 7, wherein the information processing circuit includes: the operational amplifier circuit is connected with the single chip microcomputer, and the internal information processing unit is connected with the operational amplifier circuit.