阅读说明：本技术 灭火器自动开启装置控制电路 (Control circuit of automatic opening device of fire extinguisher ) 是由 谭勇军 周文杰 刘杰 唐碧文 张航 于 2021-08-27 设计创作，主要内容包括：本发明公开了一种灭火器自动开启装置控制电路,包括主控单元、电源单元、通信单元、电机驱动单元、一号电机、二号电机、一号位置传感器、二号位置传感器、三号位置传感器、四号位置传感器和接口单元；接口单元与通信单元、电源单元和电机驱动单元相连；电源单元与主控单元和通信单元相连；主控单元与通信单元、电机驱动单元、四个位置传感器相连；电机驱动单元与两个电机相连；灭火机器人通过接口单元为控制电路进行供电以及通信,通过相应通信指令指示两个电机进行相应动作,动作完成后主控单元通过位置传感器判断电机运动位置,通过接口单元反馈给灭火机器人,完成整个灭火动作。本发明可遥控操作打开各种手提灭火器,并知道灭火器开关状态。(The invention discloses a control circuit of an automatic opening device of a fire extinguisher, which comprises a main control unit, a power supply unit, a communication unit, a motor driving unit, a first motor, a second motor, a first position sensor, a second position sensor, a third position sensor, a fourth position sensor and an interface unit, wherein the main control unit is connected with the power supply unit; the interface unit is connected with the communication unit, the power supply unit and the motor driving unit; the power supply unit is connected with the main control unit and the communication unit; the main control unit is connected with the communication unit, the motor driving unit and the four position sensors; the motor driving unit is connected with the two motors; the fire extinguishing robot supplies power and communicates for the control circuit through the interface unit, instructs two motors to carry out corresponding actions through corresponding communication instructions, and the main control unit judges the motor motion position through the position sensor after the actions are completed, and feeds back the motor motion position to the fire extinguishing robot through the interface unit to complete the whole fire extinguishing actions. The invention can be operated by remote control to open various portable fire extinguishers and know the on-off state of the fire extinguishers.)

1. The utility model provides a fire extinguisher automatic opening device control circuit which characterized in that: the system comprises a main control unit, a power supply unit, a communication unit, a motor driving unit, a first motor, a second motor, a first position sensor, a second position sensor, a third position sensor, a fourth position sensor and an interface unit; the interface unit is connected with the communication unit, the power supply unit and the motor driving unit; the power supply unit is connected with the main control unit and the communication unit; the main control unit is connected with the communication unit, the motor driving unit, the first position sensor, the second position sensor, the third position sensor and the fourth position sensor; the motor driving unit is connected with the first motor and the second motor; the fire extinguishing robot supplies power and communicates for the control circuit through the interface unit, instructs two motors to carry out corresponding action through corresponding communication instruction, and the main control unit judges two motor motion positions through four position sensors after the action is completed, feeds back to the fire extinguishing robot through the interface unit simultaneously, and the whole fire extinguishing action is completed.

2. The control circuit of an automatic opening device of a fire extinguisher according to claim 1, wherein:

the main control unit is a single chip microcomputer and related auxiliary circuits;

the power supply unit is a low dropout linear regulator and an auxiliary circuit, and converts the voltage of an external power supply into a single chip microcomputer module and a communication chip for supplying power;

the communication unit is an RS422 communication conversion chip and an auxiliary circuit;

the motor driving unit is a brush direct current motor driving chip and an auxiliary circuit.

3. The control circuit of an automatic opening device of a fire extinguisher according to claim 1, wherein:

the first motor and the second motor are both brush direct current motors; the first position sensor, the second position sensor, the third position sensor and the fourth position sensor are all infrared sensors.

4. The control circuit of an automatic opening device of a fire extinguisher according to claim 1, wherein: an external power supply V1 is connected to a power supply unit through two terminals P1, passes through a bidirectional TVS tube D2 and an anti-reverse diode D1, is filtered through two capacitors and then is connected to a low-dropout linear voltage regulator U1, and after the U1 is subjected to internal processing and conversion, the voltage is reduced to a power supply voltage corresponding to a single chip microcomputer U4 of a main control unit and a communication conversion chip U2 of a communication unit.

5. The control circuit of an automatic opening device of a fire extinguisher according to claim 1, wherein: the single chip microcomputer U4 of the main control unit is connected with a communication conversion chip U2 of the communication unit through a one-step serial communication port, the single chip microcomputer U4 sends TTL levels to the communication conversion chip U2, the communication conversion chip U2 carries out internal level conversion and converts the level into RS422 protocol levels, resistors R2 and R4 are matched resistors, and after the level conversion is finished, the resistors are communicated with external equipment through a 4-port terminal P2.

6. The control circuit of an automatic opening device of a fire extinguisher according to claim 1, wherein: the single chip microcomputer U4 of the main control unit is connected with a first motor driving chip U3 through two general I/O ports, one of the I/O ports controls the motor to rotate through high and low levels, and the high level is clockwise and the low level is counterclockwise; the other I/O port sends pulse width modulation square waves to control the rotating speed of the motor, and the first motor driving chip U3 outputs corresponding voltage and current to control the first motor B1 to do corresponding actions through internal conversion.

7. The control circuit of an automatic opening device of a fire extinguisher according to claim 1, wherein: the single chip microcomputer U4 of the main control unit is connected with a second motor driving chip U5 through two general I/O ports, wherein one I/O port controls the motor to rotate through high and low levels, and the high level is clockwise and the low level is anticlockwise; the other I/O port sends pulse width modulation square waves to control the rotating speed of the motor, and the second motor driving chip U5 outputs corresponding voltage and current to control the second motor B2 to do corresponding actions through internal conversion.

8. The control circuit of an automatic opening device of a fire extinguisher according to claim 1, wherein: the first position sensor and the second position sensor are respectively installed at two ends of a travel of a movement mechanism connected with a first motor B1, when the movement mechanism controlled by the first motor B1 moves to the first position sensor, the first position sensor can output a high level signal to an I/O port of a single chip microcomputer U4, the single chip microcomputer U4 stops outputting square waves to a first motor driving chip U3 after receiving the signal, the first motor B1 stops rotating, meanwhile, the single chip microcomputer U4 sends current position information to a fire extinguishing robot through a communication interface, the single chip microcomputer U4 senses the position of the movement mechanism of the first motor B1 through the first position sensor and the second position sensor and sends the position information to the fire extinguishing robot through the communication interface, and a fire fighter sends corresponding command action according to the corresponding position.

9. The control circuit of an automatic opening device of a fire extinguisher according to claim 1, wherein: the third position sensor and the fourth position sensor are respectively arranged at two ends of a travel of a movement mechanism connected with the second motor B2, when the movement mechanism controlled by the second motor B2 moves to the third position sensor, the third position sensor can output a high level signal to an I/O port of the singlechip U4, the singlechip U4 stops outputting a square wave to the second motor driving chip U5 after receiving the signal, the second motor B2 stops rotating, meanwhile, the singlechip U4 sends current position information to the fire extinguishing robot through a communication interface, the singlechip U4 senses the position of the movement mechanism of the second motor B2 through the third position sensor and the fourth position sensor and sends the position information to the fire extinguishing robot through the communication interface, and a fire fighter sends corresponding command action according to the corresponding position.

Technical Field

The invention belongs to the field of fire safety, and particularly relates to a control circuit of an automatic opening device of a fire extinguisher.

Background

With the progress of science and technology and the development of society, the fire-fighting robots are increasingly applied, and the fire-fighting robots are classified into fire-fighting robots, fire scene investigation robots, hazardous article leakage detection robots, demolition robots, rescue robots, multifunctional fire-fighting robots and the like according to main functions, wherein the fire-fighting robots are most widely used.

At present, the existing fire-fighting robot mainly sprays water to extinguish fire or carries a water tank by connecting a fire-fighting water pipe; put out a fire through connecing fire hose or bearing the water tank when many topography complicacies or high building are put out a fire, the robot can't carry and get into the ignition point, uses very inconveniently, and it is very high to fire extinguishing robot load capacity requirement. If the fire-extinguishing robot can use a conventional portable fire extinguisher to extinguish fire, the fire-extinguishing robot can enter various scenes to extinguish fire greatly conveniently.

Disclosure of Invention

In order to solve the defects and shortcomings in the prior art, the invention provides the fire extinguisher which can receive an external control instruction through the communication interface, can use wired communication or a wireless communication module for switching, and is very convenient for firefighters to remotely control in various scenes, thereby not only opening various portable fire extinguishers through remote control operation, but also knowing the on-off state of the fire extinguishers; meanwhile, the fire extinguisher opening device can be well controlled, the opening device can be adapted to various portable fire extinguishers, the fire extinguishing scene of the fire extinguishing robot is greatly expanded, and the fire extinguisher automatic opening device control circuit is low in cost.

The technical scheme of the invention is as follows: a control circuit of an automatic starting device of a fire extinguisher comprises a main control unit, a power supply unit, a communication unit, a motor driving unit, a first motor, a second motor, a first position sensor, a second position sensor, a third position sensor, a fourth position sensor and an interface unit; the interface unit is connected with the communication unit, the power supply unit and the motor driving unit; the power supply unit is connected with the main control unit and the communication unit; the main control unit is connected with the communication unit, the motor driving unit, the first position sensor, the second position sensor, the third position sensor and the fourth position sensor; the motor driving unit is connected with the first motor and the second motor; the fire extinguishing robot supplies power and communicates for the control circuit through the interface unit, instructs two motors to carry out corresponding action through corresponding communication instruction, and the main control unit judges two motor motion positions through four position sensors after the action is completed, feeds back to the fire extinguishing robot through the interface unit simultaneously, and the whole fire extinguishing action is completed.

Preferably, the main control unit is a single chip microcomputer and related auxiliary circuits;

the power supply unit is a low dropout linear regulator and an auxiliary circuit, and converts the voltage of an external power supply into a single chip microcomputer module and a communication chip for supplying power;

the communication unit is an RS422 communication conversion chip and an auxiliary circuit;

the motor driving unit is a brush direct current motor driving chip and an auxiliary circuit.

Preferably, the first motor and the second motor are both brush direct current motors; the first position sensor, the second position sensor, the third position sensor and the fourth position sensor are all infrared sensors.

Preferably, an external power supply V1 is connected to the power supply unit through two terminals P1, passes through the bidirectional TVS tube and the anti-reverse diode D1, is filtered by two capacitors, and is connected to the low dropout linear regulator U1, and after internal processing and conversion of U1, the voltage is reduced to a power supply voltage corresponding to the single chip microcomputer U4 of the main control unit and the communication conversion chip U2 of the communication unit.

Preferably, the single chip microcomputer U4 of the main control unit is connected with a communication conversion chip U2 of the communication unit through a one-step serial communication port, the single chip microcomputer U4 sends TTL level to the communication conversion chip U2, the communication conversion chip U2 performs internal level conversion and converts the level into RS422 protocol level, the resistors R2 and R4 are matched resistors, and after the level conversion is completed, the communication unit communicates with external equipment through a 4-port terminal P2.

Preferably, the single chip microcomputer U4 of the main control unit is connected with a first motor driving chip U3 through two general I/O ports, wherein one I/O port controls the motor to rotate through high and low levels, and the high level is clockwise and the low level is counterclockwise; the other I/O port sends pulse width modulation square waves to control the rotating speed of the motor, and the first motor driving chip U3 outputs corresponding voltage and current to control the first motor B1 to do corresponding actions through internal conversion.

Preferably, the single chip microcomputer U4 of the main control unit is connected with a second motor driving chip U5 through two general I/O ports, wherein one I/O port controls the motor to rotate through high and low levels, and the high level is clockwise and the low level is counterclockwise; the other I/O port sends pulse width modulation square waves to control the rotating speed of the motor, and the second motor driving chip U5 outputs corresponding voltage and current to control the second motor B2 to do corresponding actions through internal conversion.

Preferably, the first position sensor and the second position sensor are respectively installed at two ends of a stroke of a movement mechanism connected with the first motor B1, when the movement mechanism controlled by the first motor B1 moves to the first position sensor, the first position sensor outputs a high level signal to an I/O port of the singlechip U4, the singlechip U4 stops outputting square waves to the first motor driving chip U3 after receiving the signal, the first motor B1 stops rotating, meanwhile, the singlechip U4 sends current position information to the fire extinguishing robot through the communication interface, the singlechip U4 senses the position of the movement mechanism of the first motor B1 through the first position sensor and the second position sensor and sends the position information to the fire extinguishing robot through the communication interface, and a fire fighter sends corresponding instructions according to the corresponding position.

Preferably, the third sensor and the fourth position sensor are respectively installed at two ends of a travel of a movement mechanism connected with the second motor B2, when the movement mechanism controlled by the second motor B2 moves to the third sensor, the third sensor outputs a high-level signal to an I/O port of the single chip microcomputer U4, the single chip microcomputer U4 stops outputting a square wave to the second motor driving chip U5 after receiving the signal, the second motor B2 stops rotating, meanwhile, the single chip microcomputer U4 sends current position information to the fire extinguishing robot through a communication interface, the single chip microcomputer U4 senses the position of the movement mechanism of the second motor B2 through the third sensor and the fourth position sensor and sends the position information to the fire extinguishing robot through the communication interface, and a fireman sends a corresponding command action according to the corresponding position.

The invention can receive external control instructions through the communication interface, can use wired communication or carry out switching through the wireless communication module, is very convenient for firefighters to carry out remote control in various scenes, thereby not only opening various portable fire extinguishers through remote control operation, but also knowing the on-off state of the fire extinguishers; meanwhile, the fire extinguisher opening device can be well controlled and can be adapted to various portable fire extinguishers, the fire extinguishing scene of the fire extinguishing robot is greatly expanded, and the cost is low.

Drawings

FIG. 1 is a block circuit diagram of the present invention;

FIG. 2 is a schematic diagram of a power supply unit of the present invention;

FIG. 3 is a schematic diagram of a communication unit of the present invention;

FIG. 4 is a schematic diagram of a master control unit of the present invention;

FIG. 5 is a schematic diagram of a position sensor of the present invention;

FIG. 6 is a schematic diagram of an interface unit of the present invention;

FIG. 7 is a schematic diagram of the motor and drive unit of the present invention;

the reference numbers in the drawings are as follows:

the device comprises a bidirectional TVS tube D2, a diode D1, a capacitor C3, a capacitor C1, a low dropout linear regulator U1, a capacitor C2, a capacitor C4, a capacitor C5, a communication conversion chip U2, a resistor R2, a resistor R4, a single chip microcomputer U4, a capacitor C8, a capacitor C9, a second motor driving chip U5, a first motor driving chip U3, a first position sensor O1, a second position sensor O2, a third position sensor O3, a fourth position sensor O4, a two-port terminal P1, a 4-port terminal P2, a first motor B1 and a second motor B2.

Detailed Description

The present invention will be described in further detail with reference to the attached drawings, but the present invention is not limited thereto.

As shown in fig. 1-7, a control circuit of an automatic opening device of a fire extinguisher comprises a main control unit, a power supply unit, a communication unit, a motor driving unit, a first motor, a second motor, a first position sensor, a second position sensor, a third position sensor, a fourth position sensor and an interface unit; the interface unit is connected with the communication unit, the power supply unit and the motor driving unit; the power supply unit is connected with the main control unit and the communication unit; the main control unit is connected with the communication unit, the motor driving unit, the first position sensor, the second position sensor, the third position sensor and the fourth position sensor; the motor driving unit is connected with the first motor and the second motor; the fire extinguishing robot supplies power and communicates for the control circuit through the interface unit, instructs two motors to carry out corresponding action through corresponding communication instruction, and the main control unit judges two motor motion positions through four position sensors after the action is completed, feeds back to the fire extinguishing robot through the interface unit simultaneously, and the whole fire extinguishing action is completed.

The main control unit is a single chip microcomputer and related auxiliary circuits;

the power supply unit is a low dropout linear regulator and an auxiliary circuit, and converts the voltage of an external power supply into a single chip microcomputer module and a communication chip for supplying power;

the communication unit is an RS422 communication conversion chip and an auxiliary circuit;

the motor driving unit is a brush direct current motor driving chip and an auxiliary circuit.

The first motor and the second motor are both brush direct current motors; the first position sensor, the second position sensor, the third position sensor and the fourth position sensor are all infrared sensors.

An external power supply V1 is accessed through two terminals P1, passes through a bidirectional TVS tube D2 and an anti-reverse diode D1, is filtered through two capacitors C1 and C3, is accessed into a low-dropout linear voltage regulator U1, and is subjected to internal processing and conversion by the U1, and then is reduced to the corresponding power supply voltage of a single chip U4 and a communication conversion chip U2.

The single chip microcomputer U4 is connected with a communication conversion chip U2 through a one-step serial communication port, an RS422 communication conversion chip is selected for the implementation scheme, the single chip microcomputer U4 sends TTL levels to the communication conversion chip U2, the communication conversion chip U2 carries out internal level conversion and converts the TTL levels into RS422 protocol levels, resistors R2 and R4 are matched resistors, and after the level conversion is finished, the single chip microcomputer U4 communicates with external equipment through a 4-port terminal P2.

The single chip microcomputer U4 is connected with a first motor driving chip U3 through two general input/output ports (hereinafter referred to as I/O ports), wherein one I/O port controls the motor to rotate through high and low levels, and the high level is clockwise and the low level is anticlockwise; the other I/O port sends pulse width modulation square waves to control the rotating speed of the motor, and the first motor driving chip U3 outputs corresponding voltage and current to control the first motor B1 to do corresponding actions through internal conversion.

The single chip microcomputer U4 is connected with a second motor driving chip U5 through two general I/O ports, one of the I/O ports controls the motor to rotate through high and low levels, and the high level is clockwise and the low level is counterclockwise; the other I/O port sends pulse width modulation square waves to control the rotating speed of the motor, and the second motor driving chip U5 outputs corresponding voltage and current to control the second motor B2 to do corresponding actions through internal conversion.

The first position sensor O1 and the second position sensor O2 are respectively installed at two ends of a travel of a movement mechanism connected with the first motor B1, when the movement mechanism controlled by the first motor B1 moves to the first position sensor O1, the first position sensor 01 outputs a high-level signal to an I/O port of the singlechip U4, the singlechip U4 stops outputting square waves to the first motor driving chip U3 after receiving the signal, the first motor B1 stops rotating, the singlechip U4 sends current position information to a fire extinguisher robot through a communication interface, the singlechip U4 senses the position of the movement mechanism of the first motor B1 through the first position sensor O1 and the second position sensor O2 and sends the position information to the fire extinguisher robot through the communication interface, and a fire fighter acts according to a corresponding command of the corresponding position.

The third position sensor O3 and the fourth position sensor O4 are respectively installed at two ends of a travel of a movement mechanism connected with the second motor B2, when the movement mechanism controlled by the second motor B2 moves to the third position sensor O3, the third position sensor 03 outputs a high-level signal to an I/O port of the singlechip U4, the singlechip U4 stops outputting a square wave to the second motor driving chip U5 after receiving the signal, the second motor B2 stops rotating, the singlechip U4 sends current position information to the fire extinguisher robot through a communication interface, the singlechip U4 senses the position of the movement mechanism of the second motor B2 through the third position sensor O3 and the fourth position sensor O4 and sends the position information to the fire extinguisher robot through the communication interface, and a fire fighter acts according to a corresponding command of the corresponding position.

The invention can receive external control instructions through the communication interface, can use wired communication or carry out switching through the wireless communication module, is very convenient for firefighters to carry out remote control in various scenes, thereby not only opening various portable fire extinguishers through remote control operation, but also knowing the on-off state of the fire extinguishers; meanwhile, the fire extinguisher opening device can be well controlled and can be adapted to various portable fire extinguishers, the fire extinguishing scene of the fire extinguishing robot is greatly expanded, and the cost is low.