CN216526782U

CN216526782U - Anti-maloperation self-detection centralized control window breaker circuit

Info

Publication number: CN216526782U
Application number: CN202021907273.1U
Authority: CN
Inventors: 黄斌
Original assignee: Zhejiang Yongxu Technology Co ltd
Current assignee: Zhejiang Yongxu Technology Co ltd
Priority date: 2020-09-03
Filing date: 2020-09-03
Publication date: 2022-05-13
Anticipated expiration: 2030-09-03

Abstract

The utility model relates to a misoperation-preventing self-checking centralized control window breaker circuit, which comprises a plurality of groups of window breaking mechanism unit circuits and a centralized control unit circuit, wherein a switch linked with an upper cover of a device shell is detected at any time through an upper cover detection end arranged in the centralized control unit circuit, the state of the upper cover is judged, and when the upper cover of the shell is detected to be in a closed state, the centralized control unit circuit controls and cuts off a power supply of an execution element so as to avoid misoperation loss caused by false triggering when a circuit is subjected to electric leakage and bonding, and simultaneously, the output of a sound alarm control end is closed, but the detection and light alarm circuit unit is kept to normally work, so that the phenomenon that the alarm sound suddenly sends out to disturb a driver in the vehicle running process to influence the driving safety is avoided, and the defect of the traditional centralized control window breaker circuit is overcome.

Description

Anti-maloperation self-detection centralized control window breaker circuit

Technical Field

The utility model relates to a vehicle safety device, in particular to a false-operation-preventing self-checking centralized control window breaker circuit used on large vehicles such as buses, trains, motor trains, subways and other vehicles.

Background

With the increasing popularization of motor vehicles, in recent years, the number of crime cases related to the longitudinal fire of buses is increasing, and casualties are caused. Meanwhile, accidents caused by car accidents are also raised, a considerable part of the accidents are caused by that a car catches fire or a person carrying the car falls into water, the car door cannot be opened due to water pressure and electric leakage or power loss due to fire, and the car window glass is very firm, particularly under the condition that a car membrane is attached, the car window glass is difficult to break, and finally people on the car are drowned or burned to death, particularly some large buses, once the above conditions occur, a major accident or even a super-major accident can be caused. In view of this, the requirements of the existing GB7258-2012 "pneumatic vehicle operation safety technical conditions" on the fire safety of buses and the convenience of escape of passengers falling into water due to accident combustion are not adapted to the current social situation, social boundaries, and the expectation of leaders at all levels to improve the intrinsic safety level of buses and coaches, and therefore, the national standardization management committee revises the content GB7258 comment draft in 3/18/2016, and publishes the implementation. The technical condition of motor vehicle operation safety (draft of comments) modifies the content of GB7258 standard, and increases the requirements that the passenger car with the car length of more than 9m and without passenger standing area has at least 2 glass-breaking emergency windows on the left and right sides of the car body and has automatic window breaking function. The traditional window breaking tool usually only has simple tools such as a window breaking hammer and the like, and is easy to lose. In addition, because the space in the vehicle is narrow, and in the case of more passengers, a plurality of vehicle windows need to be broken to improve the escape speed, but the window breaking hammer is limited to a certain extent in use, so that force is difficult to apply, and the window breaking speed and the effect are influenced. In order to solve this problem, it is required to install a motor vehicle window breaking device capable of breaking a plurality of windows simultaneously and rapidly in a motor bus. At present, there are several motor vehicle window breaking devices which are centrally controlled by an electronic circuit and can rapidly break a plurality of vehicle windows at the same time, the basic structure of such a window breaking device usually comprises a metal firing pin, a driving mechanism of the metal firing pin and a control circuit, or a pressing type motor vehicle window breaking device with an elastic energy storage mechanism, and an executing element controlled by an electronic circuit, such as a motor or an electromagnetic mechanism, completes the window breaking action of the metal firing pin driving the window breaking device to achieve the window breaking purpose, and each vehicle window is correspondingly provided with a group of motors or electromagnetic mechanisms and window breaking devices. Whether the window breaking device works normally or not is related to life safety of passengers, so that once a fault exists in electronic circuit control of the window breaking device, the fault condition of the window breaking device needs to be timely mastered, however, the electronic circuit control of the existing window breaking device is not provided with a self-checking function, so that the fault cannot be timely discovered and eliminated, and potential safety hazards are eliminated. In order to enhance the reliability of the device, find the device fault in time and eliminate potential safety hazards, some manufacturers develop some window breaker centralized control unit circuits with self-checking functions. However, the current centralized control circuit of the window breakers is still not perfect, and has some defects, for example, when the existing window breaker is subjected to line leakage bonding in the installation process or after a period of use, false triggering can be caused to cause false operation of the window breaker, so that property loss is caused; in addition, the sound alarm circuit unit still keeps the detection and light alarm circuit unit working normally, so that the phenomenon that the sudden alarm sound interferes with a driver in the driving process of the vehicle to influence the driving safety is avoided.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provides a window breaker centralized control unit circuit with a self-checking function.

In order to achieve the purpose, the utility model discloses a false-operation-preventing self-detection centralized control window breaker circuit, which is characterized in that: the system comprises a direct current power supply unit, a centralized control unit circuit, a plurality of groups of window breaking mechanism unit circuits and a sound alarm circuit unit; the centralized control unit circuit consists of a micro data processing unit consisting of a singlechip and peripheral elements thereof; the window breaking mechanism unit circuit comprises a motor or an electromagnetic driving component as an actuating element, an actuating power supply control circuit unit and a detection and light alarm circuit unit, wherein the actuating power supply control circuit unit provides power for the actuating element under the control of the centralized control unit circuit, and the actuating element is connected between the anode and the cathode of the actuating power supply after being connected with a first isolating diode D3 in series; the detection and light alarm circuit unit comprises an alarm light-emitting diode D1 and an LED driving triode Q2, the LED driving triode Q2 is NPN type, the alarm light-emitting diode D1 and a first current-limiting resistor R3 are connected in series between the positive pole of a main direct-current working power Vo and the collector of the LED driving triode Q2, the emitter of the LED driving triode Q2 is connected with the negative pole of the main direct-current working power Vo, and a second current-limiting resistor R4 is connected between the base of the LED driving triode Q2 and the positive pole of the main direct-current working power Vo to form a light alarm circuit; the centralized control unit circuit is provided with a fault detection end, a first detection diode D4 is connected between the fault detection end and the collector of the LED driving triode Q2, and a detection diode D2 is connected between the base of the LED driving triode Q2 and the connection point of the execution element and the first isolation diode D3 to form a detection circuit unit; the anti-maloperation self-detection centralized control window breaker circuit is also provided with an upper cover linkage switch, the upper cover linkage switch comprises a normally closed switch S2 and a normally open switch S1, the centralized control unit circuit is provided with an upper cover detection end, the normally open switch S1 is connected between the upper cover detection end and the negative electrode of the main direct current working power supply Vo, and the normally closed switch S2 is connected between the base electrode of the LED driving triode Q2 and the negative electrode of the main direct current working power supply Vo; the centralized control unit circuit is provided with a sound alarm control end connected with the control input end of the sound alarm circuit unit to control the sound alarm circuit unit to work.

As a further configuration of the present invention, the sound alarm circuit includes a unit buzzer FM and an audio driving triode Q1, the buzzer FM is connected in series between the positive electrode of the main dc operating power Vo and the collector of the audio driving triode Q1, the emitter of the audio driving triode Q1 is connected to the negative electrode of the main dc operating power Vo, and the alarm control end of the centralized control unit circuit is connected to the base of the audio driving triode Q1 through a third current limiting resistor R3.

As a still further configuration of the present invention, the execution power control circuit unit includes a first switching transistor Q3 and a second switching transistor Q4, the first switching transistor Q3 is PNP type, the second switching transistor Q4 is NPN type, an emitter of the first switching transistor Q3 is connected to the main operating power supply, a bias resistor R5 is connected across between an emitter and a base of the first switching transistor Q3, a base of the first switching transistor Q3 is connected to a collector of the second switching transistor Q4 via a fourth current limiting resistor R6, an emitter of the second switching transistor Q4 is connected to a negative electrode of the main operating power supply, a collector of the first switching transistor Q3 is connected to one end of the series branch of the isolation diode and the execution element, the other end of the series branch of the isolation diode and the execution element is connected to a negative electrode of the execution power supply, and a base of the second switching transistor Q4 is connected to a power control circuit of the centralized control unit via a fifth current limiting resistor R7 The end connections constitute the execution power supply control circuit unit.

As a still further configuration of the present invention, the anti-malfunction self-checking centralized control window breaker circuit is provided with a plurality of groups of window breaking mechanism unit circuits, and anodes of the first detection diodes D4 in the window breaking mechanism unit circuits of each group are connected together and then connected to a fault detection end of the centralized control unit circuit to form a line and a connection.

The utility model discloses a misoperation-preventing self-checking centralized control window breaker circuit which comprises a plurality of groups of window breaking mechanism unit circuits and a centralized control unit circuit, wherein a switch linked with an upper cover of a device shell is detected at any time through an upper cover detection end arranged in the centralized control unit circuit, the state of the upper cover is judged, and when the upper cover of the shell is detected to be in a closed state, the centralized control unit circuit controls to cut off a power supply of an execution element so as to avoid the loss caused by misoperation of the window breaker due to false triggering when a circuit is grounded by electricity leakage, and simultaneously, the output of a sound alarm control end is closed, but the detection and light alarm circuit unit is still kept to normally work, so that the phenomenon that a driver is interfered by sudden alarm sound in the driving process of a vehicle, the driving safety is influenced, and the defect of the traditional centralized control window breaker circuit is overcome.

The utility model is further described with reference to the following figures and specific embodiments.

Drawings

FIG. 1 is a schematic circuit diagram of an embodiment of the present invention;

FIG. 2 is a circuit diagram of an embodiment of a power control circuit unit of the present invention;

fig. 3 is a schematic circuit diagram of an embodiment of the dc voltage reduction circuit of the present invention.

Detailed Description

The window breaker matched with the anti-misoperation self-detection centralized control window breaker circuit is a press type window breaker, the press mode can be that a certain press piece is directly or indirectly pressed through electric control operation to drive a metal firing pin to complete window breaking, and the press type window breaker with an energy storage structure, which is relatively efficient and labor-saving, is preferred. The pressing type window breaker with the energy storage structure generally comprises a firing pin and a pressing elastic energy storage and firing mechanism, wherein the firing pin is axially and slidably arranged in a mounting seat, the pressing elastic energy storage and firing mechanism is provided with a slidable pressing piece, the pressing piece is pressed to enable the firing pin to store elastic energy, and the firing pin is released after certain elastic energy is stored. The prior art can be selected specifically, such as a pressing type window breaker and a pressing execution mechanism which are published in 2018, 4, 13, and have the name of an intelligent motor vehicle full-automatic window breaking device and the publication number of CN 107901869; or the window breaking mechanism and the driving device which are recorded in the mini-type electric motor car window breaker with the application number of 201811139292.1. In order to prevent misoperation caused by mistaken collision, the window breaking devices are provided with shells, the upper covers of the shells are opened, manual pressing operation can be performed to break the windows, and a driver can trigger the window breaking devices to break the windows by pressing the starting switches arranged on the driving platforms.

The utility model discloses a false-action-preventing self-checking centralized control window breaker circuit comprises a direct current power supply unit, a centralized control unit circuit 1, a plurality of groups of window breaking mechanism unit circuits 2 and a sound alarm circuit unit 3; the centralized control unit circuit 1 is composed of a micro data processing unit consisting of a single chip microcomputer U1 and peripheral elements thereof, the single chip microcomputer U1 can select proper existing products according to performance index requirements of the circuit on the number of memory, I/O input and output ends and the like, and a PIC16F629 series single chip microcomputer is selected in the specific embodiment.

The window breaking mechanism unit circuit 2 includes a motor M or an electromagnetic driving component as an executing element, an executing power control circuit unit 201, and a detection and light alarm circuit unit 202, where the executing element is a micro motor M in this embodiment. Because the voltage of the execution power supply Vm as an execution element is higher than the control direct current working power supply Vcc of the centralized control unit circuit 1, the direct current power supply unit of the utility model comprises a main direct current working power supply Vo as the working power supply of the execution element and the control direct current working power supply Vcc of the working power supply of the centralized control unit circuit 1, wherein the main direct current working power supply Vo is provided by a vehicle-mounted storage battery; the main dc working power Vo is subjected to voltage reduction and stabilization by the dc voltage reduction circuit 4, and then output as a control dc working power Vcc, and a specific embodiment of the dc voltage reduction circuit 4 is shown in fig. 3. The execution power supply control circuit unit 201 supplies power to an execution element under the control of the centralized control unit circuit 1, the execution element is connected between the positive pole and the negative pole of the execution power supply Vm after being connected with a first isolation diode D3 in series, wherein the positive pole of the first isolation diode D3 is connected with the positive pole of the execution power supply Vm.

In this embodiment, the detecting and light warning circuit unit 202 includes a warning light emitting diode D1 and an LED driving triode Q2, the LED driving triode Q2 is NPN type, the warning light emitting diode D1 and a first current limiting resistor R3 are connected in series between the positive pole of the main dc working power Vo and the collector of the LED driving triode Q2, the emitter of the LED driving triode Q2 is connected with the negative pole of the main dc working power Vo, and a second current limiting resistor R4 is connected between the base of the LED driving triode Q2 and the positive pole of the main dc working power Vo to form a light warning circuit; the centralized control unit circuit 1 is provided with a fault detection end, in this embodiment, a first I/O input/output end (pin 7) of the single chip microcomputer U1 is used as the fault detection end, a first detection diode D4 is connected between the fault detection end and a collector of the LED driving triode Q2, a negative electrode of the first detection diode D4 is connected with a collector of the LED driving triode Q2, and a detection diode D2 is further connected between a base of the LED driving triode Q2 and a connection point of the execution element and the first isolation diode D3 to form a detection circuit unit; prevent maloperation self-checking centralized control broken window ware circuit still is equipped with upper cover gang switch, upper cover gang switch includes a normally closed switch S2 and a normally open switch S1, centralized control unit circuit 1 is equipped with the upper cover sense terminal, normally open switch S1 is connected between upper cover sense terminal and main direct current working power source Vo ' S negative pole, normally closed switch S2 is connected between LED drive triode Q2 ' S base and main direct current working power source Vo ' S negative pole.

In this embodiment, sound warning circuit unit 3 includes unit buzzer FM and audio drive triode Q1, buzzer FM concatenates at main direct current working power Vo's positive pole with between audio drive triode Q1's the collecting electrode, audio drive triode Q1's projecting pole is connected with main direct current working power Vo's negative pole, centralized control unit circuit 1 is equipped with sound warning control end, in this embodiment, singlechip U1's second IO input/output end (2 nd pin) is as sound warning control end, centralized control unit circuit 1's warning control end is through third current limiting resistor R1 and sound warning circuit unit 3's control input promptly audio drive triode Q1's base is connected, controls sound warning circuit unit 3 works.

In this embodiment, the execution power control circuit unit 201 includes a first switching transistor Q3 and a second switching transistor Q4, the first switching transistor Q3 is PNP type, the second switching transistor Q4 is NPN type, an emitter of the first switching transistor Q3 is connected to the main operating power supply, a bias resistor R5 is connected across between an emitter and a base of the first switching transistor Q3, a base of the first switching transistor Q3 is connected to a collector of the second switching transistor Q4 via a fourth current limiting resistor R6, an emitter of the second switching transistor Q4 is connected to a negative electrode of the main operating power supply, a collector of the first switching transistor Q3 is connected to one end of the isolation diode and execution element series branch as an execution power Vm positive electrode, and the other end of the isolation diode and execution element series branch is connected to a negative electrode of an execution power Vm (main dc operating power supply Vo), the base of the second switching transistor Q4 is connected to the power control end of the centralized control unit circuit 1 through a fifth current-limiting resistor R7 to form the execution power control circuit unit 201, in this embodiment, the third I/O input/output end (the 6 th pin) of the single chip microcomputer U1 is used as the power control end, as shown in fig. 2.

In order to simultaneously break windows of multiple windows and perform self-checking and alarming on each window breaker, the anti-misoperation self-checking centralized control window breaker circuit is provided with a plurality of groups of window breaking mechanism unit circuits 2, and anodes of first detection diodes D4 in the groups of window breaking mechanism unit circuits 2 are connected together and then connected with fault detection ends of the centralized control unit circuit 1 to form lines and connections.

The working principle of the anti-misoperation self-detection centralized control window breaker circuit is as follows: when the upper cover of the shell is in a closed standby state, the normally open switch S1 of the upper cover linkage switch is in a closed state, and the normally closed switch S2 is in an open state. The centralized control unit circuit 1 monitors a switch (normally open switch S1) linked with an upper cover connected with a detection end of the upper cover in real time under the control of an internal program of a singlechip U1 to judge the state of the upper cover, when the upper cover of a shell is detected to be in a closed state, the output of a second I/O input/output end (pin 2) of the singlechip U1 of the centralized control unit circuit, namely a voice alarm control end, keeps low level, so that the situation that alarm voice is suddenly sent to disturb a driver in the driving process of a vehicle and the driving safety is influenced is avoided, meanwhile, the output of a third I/O input/output end (pin 6) of the singlechip U1 of the centralized control unit circuit, namely a power supply control end, keeps low level, a first switching triode Q3 and a second switching triode Q4 are cut off, the execution power supply control circuit unit 201 does not output, namely cuts off the power supply (execution power supply Vm) of an execution element, so as to avoid the loss caused by the false triggering of the window breaker when the leakage earth of the line occurs.

At this time, if the motor line is normal and no open-circuit fault occurs, under the biasing action of the second current-limiting resistor R4 and the internal resistance of the motor M, the LED driving triode Q2 is in a micro-conduction state, the collector of the LED driving triode Q2 is at a high level, the warning light-emitting diode D1 does not emit light, the first I/O input/output end (the 7 th pin) of the single chip microcomputer U1, namely the fault detection end, is also at a high level, and the internal program judges that the circuit is normal.

If the motor open circuit fault occurs, at the moment, the base electrode of the LED driving triode Q2 and the negative electrode of the power supply are in a disconnected state, under the biasing action of the second current-limiting resistor R4, the LED driving triode Q2 is in a conducting state, the collector electrode of the LED driving triode Q2 is at a low level, the alarm light-emitting diode D1 emits light, a light alarm signal is sent out, the corresponding fault motor is indicated, meanwhile, the first I/O input/output end (the 7 th pin), namely the fault detection end, of the single chip microcomputer U1 is also at the low level, and the internal program judges that the fault occurs.

When an emergency situation occurs and the window needs to be broken, the upper cover of the shell is opened, the normally open switch S1 of the upper cover linkage switch is in an open state, and the normally closed switch S2 is in a closed state. At the moment, the centralized control unit circuit 1 monitors the switch (normally open switch S1) linked with the upper cover connected with the detection end of the upper cover in real time under the control of the internal program of the singlechip U1 to judge the state of the upper cover, when the upper cover of the shell is detected to be in an open state, the output of a second I/O input/output end (2 nd pin), namely a sound alarm control end, of the singlechip U1 of the centralized control unit circuit keeps high level, an alarm sound is emitted to prompt passengers to evacuate as soon as possible, meanwhile, the output of the third I/O input/output end (the 6 th pin), namely the power control end, of the singlechip U1 of the centralized control unit circuit keeps high level, the first switching triode Q3 and the second switching triode Q4 are conducted, the execution power supply control circuit unit 201 outputs an execution power supply Vm, the starting switch QD is pressed at the moment, all the motors M are powered on, and the window breaking action is completed.

The above-mentioned embodiments are merely illustrative of the inventive concept and are not intended to limit the scope of the utility model, which is defined by the claims and the insubstantial modifications of the inventive concept can be made without departing from the scope of the utility model.

Claims

1. The utility model provides a prevent broken window ware circuit of maloperation self-checking centralized control which characterized in that: the system comprises a direct current power supply unit, a centralized control unit circuit, a plurality of groups of window breaking mechanism unit circuits and a sound alarm circuit unit; the centralized control unit circuit consists of a micro data processing unit consisting of a singlechip and peripheral elements thereof; the window breaking mechanism unit circuit comprises a motor or an electromagnetic driving component as an actuating element, an actuating power supply control circuit unit and a detection and light alarm circuit unit, wherein the actuating power supply control circuit unit provides power for the actuating element under the control of the centralized control unit circuit, and the actuating element is connected between the anode and the cathode of the actuating power supply after being connected with a first isolating diode D3 in series; the detection and light alarm circuit unit comprises an alarm light-emitting diode D1 and an LED driving triode Q2, the LED driving triode Q2 is NPN type, the alarm light-emitting diode D1 and a first current-limiting resistor R3 are connected in series between the positive pole of a main direct-current working power Vo and the collector of the LED driving triode Q2, the emitter of the LED driving triode Q2 is connected with the negative pole of the main direct-current working power Vo, and a second current-limiting resistor R4 is connected between the base of the LED driving triode Q2 and the positive pole of the main direct-current working power Vo to form a light alarm circuit; the centralized control unit circuit is provided with a fault detection end, a first detection diode D4 is connected between the fault detection end and the collector of the LED driving triode Q2, and a detection diode D2 is connected between the base of the LED driving triode Q2 and the connection point of the execution element and the first isolation diode D3 to form a detection circuit unit; the anti-maloperation self-detection centralized control window breaker circuit is also provided with an upper cover linkage switch, the upper cover linkage switch comprises a normally closed switch S2 and a normally open switch S1, the centralized control unit circuit is provided with an upper cover detection end, the normally open switch S1 is connected between the upper cover detection end and the negative electrode of the main direct current working power supply Vo, and the normally closed switch S2 is connected between the base electrode of the LED driving triode Q2 and the negative electrode of the main direct current working power supply Vo; the centralized control unit circuit is provided with a sound alarm control end connected with the control input end of the sound alarm circuit unit to control the sound alarm circuit unit to work.

2. The anti-malfunction self-test centralized control window breaker circuit according to claim 1, characterized in that: the sound alarm circuit comprises a unit buzzer FM and an audio driving triode Q1, wherein the buzzer FM is connected in series with the positive electrode of a main direct current working power supply Vo and between the collector electrode of the audio driving triode Q1, the emitter electrode of the audio driving triode Q1 is connected with the negative electrode of the main direct current working power supply Vo, and the alarm control end of the centralized control unit circuit is connected to the base electrode of the audio driving triode Q1 through a third current limiting resistor R3.

3. The anti-malfunction self-test centralized control window breaker circuit according to claim 1, characterized in that: the execution power control circuit unit comprises a first switching triode Q3 and a second switching triode Q4, the first switching triode Q3 is PNP type, the second switching triode Q4 is NPN type, the emitter of the first switching triode Q3 is connected with a main working power supply, a bias resistor R5 is bridged between the emitter of the first switching triode Q3 and the base, the base of the first switching triode Q3 is connected with the collector of the second switching triode Q4 through a fourth current-limiting resistor R6, the emitter of the second switching triode Q4 is connected with the negative electrode of the main working power supply, the collector of the first switching triode Q3 is connected with one end of a series branch of an isolating diode and an execution element, the other end of the series branch of the isolating diode and the execution element is connected with the negative electrode of the execution power supply, the base of the second switching triode Q4 is connected with the power control end of the centralized control unit circuit through a fifth current-limiting resistor R7 to form the execution power control circuit A circuit unit.

4. The anti-malfunction self-test centralized control window breaker circuit according to claim 1, characterized in that: the integrated control system is provided with a plurality of groups of window breaking mechanism unit circuits, wherein the anodes of first detection diodes D4 in the window breaking mechanism unit circuits are connected together and then connected with the fault detection end of the integrated control unit circuit to form a line and a connection.