CN220553105U

CN220553105U - Fire control linked system start-stop control circuit

Info

Publication number: CN220553105U
Application number: CN202322347642.6U
Authority: CN
Inventors: 杭才俊; 李研; 何非; 王延红
Original assignee: China United Network Communications Group Co Ltd; Unicom Digital Technology Co Ltd; China Unicom Internet of Things Corp Ltd
Current assignee: China United Network Communications Group Co Ltd; Unicom Digital Technology Co Ltd; China Unicom Internet of Things Corp Ltd
Priority date: 2023-08-30
Filing date: 2023-08-30
Publication date: 2024-03-01
Anticipated expiration: 2033-08-30

Abstract

The application provides a fire control linked system opens and stops control circuit, include: a microprocessor, a charge pump circuit and a change-over switch; the charge pump circuit is connected with the first starting signal and the first end of the change-over switch; the second end of the change-over switch is connected with a standing signal, and the third end of the change-over switch is connected with the input end of the controlled equipment; the microprocessor is connected with the change-over switch and is used for outputting a first control signal or outputting a second control signal; the fourth end of the change-over switch is connected with the energy storage element, the fifth end of the change-over switch is connected with the input end of the charge pump circuit, and the sixth end of the change-over switch is grounded; the change-over switch is used for responding to the first control signal and conducting connection between the second end and the third end and connection between the fourth end and the sixth end; in response to the second control signal, the connection between the first terminal and the third terminal and between the fourth terminal and the fifth terminal is turned on. The fire control linked system start-stop control circuit is used for solving the power loss between a power supply and controlled equipment.

Description

Fire control linked system start-stop control circuit

Technical Field

The application relates to the field of power supply, in particular to a fire protection linkage system start-stop control circuit.

Background

The controlled equipment and the power supply in the fire-fighting linkage control system are connected through an entity wire, and the direct manual control device can start and stop the communication between the power supply and the controlled equipment, but the power loss between the power supply and the controlled equipment is the maximum bottleneck for limiting the communication distance;

the existing direct manual control device in the market is mainly improved in the aspects of functionality and the like, and cannot solve the problem of power loss between a power supply and controlled equipment.

Disclosure of Invention

The application provides a fire control linked system start-stop control circuit for solve the power loss between power supply and the controlled equipment line.

The application provides a fire control linked system opens and stops control circuit, the circuit includes: a microprocessor, a charge pump circuit and a change-over switch;

the input end of the charge pump circuit is connected with a first starting signal, and the output end of the charge pump circuit is connected with the first end of the change-over switch; the second end of the change-over switch is connected with a standing signal, and the third end of the change-over switch is connected with the input end of the controlled equipment through a cable;

the microprocessor is connected with the change-over switch and is used for outputting a first control signal when the controlled equipment is not started; and outputting a second control signal when the start of the controlled device is instructed;

the fourth end of the switch is connected with an energy storage element in the charge pump circuit, the fifth end of the switch is connected with the input end of the charge pump circuit, and the sixth end of the switch is grounded; the change-over switch is used for responding to a first control signal and conducting connection between a second end and a third end and connection between a fourth end and a sixth end of the change-over switch; and in response to the second control signal, turning on the connection between the first end and the third end and between the fourth end and the fifth end of the change-over switch.

In one example, the diverter switch includes: the coil switch, the first controllable switch and the first resistor; the coil switch comprises a coil, a first electromagnetic switch and a second electromagnetic switch;

a first end of the first resistor is connected to the microprocessor, a second end of the first resistor is connected to a first end of the first controllable switch, a second end of the first controllable switch is connected to a first end of the coil, a third end of the first controllable switch is grounded, and the first controllable switch is used for disconnecting the connection between the second end and the third end of the first controllable switch and conducting the connection between the second end and the third end of the first controllable switch corresponding to a first control signal and a second control signal;

the second end of the coil is connected with a second starting signal;

the first end of the first electromagnetic switch is connected with the input end of the charge pump circuit, the third end of the first electromagnetic switch is connected with the energy storage element, the second end of the first electromagnetic switch is grounded and used for responding to a first control signal, conducting the connection between the second end and the third end of the first electromagnetic switch and responding to a second control signal, and conducting the connection between the first end and the third end of the first electromagnetic switch;

the first end of the second electromagnetic switch is connected with the output end of the charge pump circuit, the second end of the second electromagnetic switch is connected with the standing signal, the third end of the second electromagnetic switch is connected with the input end of the controlled device and used for responding to a first control signal, conducting the connection between the second end and the third end of the second electromagnetic switch and responding to a second control signal, and conducting the connection between the first end and the third end of the second electromagnetic switch.

In one example, the first controllable switch is an NMOS transistor.

In one example, the charge pump circuit includes: the first diode, the second diode and the energy storage element;

the first end of the first diode is connected with the first starting signal, the second end of the first diode is connected with the first end of the second diode, and the second end of the second diode is connected with the first end of the second electromagnetic switch;

the first end of the energy storage element is connected with the third end of the first electromagnetic switch, and the second end of the energy storage element is connected with the second end of the first diode.

In one example, the energy storage element is a capacitor.

In one example, the circuit further comprises: the second resistor R2 and the third resistor R3;

the first end of the second resistor is connected to the microprocessor, the second end of the second resistor is connected with the output end of the controlled device, the first end of the third resistor is connected with the output end of the controlled device, and the second end of the third resistor is grounded.

In one example, the circuit further comprises: the second controllable switch, the fourth resistor and the fifth resistor;

the first end of the second controllable switch is connected with the microprocessor, the second end of the second controllable switch is connected with the standing signal, the third end of the second controllable switch is connected with the first end of the fourth resistor, the second end of the fourth resistor is connected with the second end of the second electromagnetic switch, the second end of the second controllable switch is connected with the third end of the second controllable switch by a third control signal for receiving the microprocessor, and the fourth control signal for receiving the microprocessor disconnects the connection between the second end of the second controllable switch and the third end;

the first end of the fifth resistor is connected with the standing signal, and the second end of the fifth resistor is grounded.

In one example, the second controllable switch is an NMOS transistor.

In one example, the circuit further comprises a push switch;

the first end of the push switch is grounded, and the second end of the push switch is connected to the microprocessor.

In one example, the microprocessor includes a first pin, a second pin, a third pin, a fourth pin, a start terminal, and a ground terminal;

the second end of the push switch is connected to the first pin of the microprocessor;

a first end of the second controllable switch is connected to a second pin of the microprocessor;

the first end of the second resistor is connected to a third pin of the microprocessor;

the second end of the first resistor is connected to a fourth pin of the microprocessor;

the starting end of the microprocessor is connected with a third starting signal;

the ground of the microprocessor is grounded.

The application provides a fire control linked system opens and stops control circuit, the circuit includes: a microprocessor, a charge pump circuit and a change-over switch; the input end of the charge pump circuit is connected with a first starting signal, and the output end of the charge pump circuit is connected with the first end of the change-over switch; the second end of the change-over switch is connected with a standing signal, and the third end of the change-over switch is connected with the input end of the controlled equipment through a cable; the microprocessor is connected with the change-over switch and is used for outputting a first control signal when the controlled equipment is not started; and outputting a second control signal when the start of the controlled device is instructed; the fourth end of the switch is connected with an energy storage element in the charge pump circuit, the fifth end of the switch is connected with the input end of the charge pump circuit, and the sixth end of the switch is grounded; the change-over switch is used for responding to a first control signal and conducting connection between a second end and a third end and connection between a fourth end and a sixth end of the change-over switch; and in response to the second control signal, turning on the connection between the first end and the third end and between the fourth end and the fifth end of the change-over switch. The connection mode of the change-over switch is controlled by the control signal output by the microprocessor, so that the voltage output by the charge pump circuit is controlled, and the power loss between the power supply and the controlled equipment is solved by increasing the voltage output by the control charge pump circuit.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.

Fig. 1 is a schematic view of an application scenario illustrated in the present application;

fig. 2 is a schematic structural diagram of a fire protection linkage system start-stop control circuit according to a first embodiment of the present application;

fig. 3 is a schematic structural diagram of a start-stop control circuit of another fire protection linkage system according to the first embodiment of the present application;

fig. 4 is a schematic structural diagram of a start-stop control circuit of a fire protection linkage system according to a first embodiment of the present disclosure;

fig. 5 is a schematic structural diagram of a start-stop control circuit of a fire protection linkage system according to a first embodiment of the present disclosure;

fig. 6 is a schematic structural diagram of a start-stop control circuit of a fire protection linkage system according to a first embodiment of the present disclosure;

fig. 7 is a schematic structural diagram of a start-stop control circuit of a fire protection linkage system according to a first embodiment of the present disclosure;

fig. 8 is a schematic structural diagram of a start-stop control circuit of a fire protection linkage system according to a first embodiment of the present disclosure;

fig. 9 is a schematic structural diagram of a start-stop control circuit of a fire protection linkage system according to a first embodiment of the present disclosure;

fig. 10 is a schematic structural diagram of a start-stop control circuit of a fire protection linkage system according to a first embodiment of the present disclosure;

fig. 11 is a schematic structural diagram of a start-stop control circuit of a fire protection linkage system according to a first embodiment of the present application.

Specific embodiments thereof have been shown by way of example in the drawings and will herein be described in more detail. These drawings and the written description are not intended to limit the scope of the inventive concepts in any way, but to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present application as detailed in the accompanying claims.

Fig. 1 is a schematic diagram of an application scenario of the present application, where a power supply and a controlled device are connected by an entity electric wire, and the power supply may supply power to the controlled device through the electric wire. The direct manual control device can be a key switch, and the microprocessor sends a control signal to the output control unit according to the closing state of the key switch, so that the charge pump is controlled to provide electric energy for the controlled equipment, meanwhile, the microprocessor can detect whether the controlled equipment has open circuit or short circuit, and the power loss between the power supply and the controlled equipment is the maximum bottleneck for limiting the communication distance;

the existing direct manual control device in the market at present is mainly improved in terms of functionality and the like, and cannot solve the problem of power loss between a power supply and controlled equipment.

In the application, the connection mode of the change-over switch in the output control unit is controlled through the state signal output by the microprocessor, and the output voltage of the charge pump circuit is controlled according to the running state of the change-over switch, the change-over switch can be controlled to work in a first connection mode under the first state signal, the charge pump is controlled to output in a first voltage, the change-over switch is controlled to work in a second connection mode under the second state signal, the charge pump is controlled to output in a second voltage, and the second voltage is larger than the first voltage.

The following describes the technical solutions of the present application and how the technical solutions of the present application solve the above technical problems in detail with specific embodiments. The following embodiments may be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments. Embodiments of the present application will be described below with reference to the accompanying drawings.

Example 1

Fig. 2 is a schematic structural diagram of a fire protection linkage system start-stop control circuit according to an embodiment of the present application, as shown in fig. 2, the circuit includes: a microprocessor, a charge pump circuit and a change-over switch;

In combination with the scenario example, when the controlled device does not need to be started, the microprocessor needs to control the charge pump circuit to be inactive, and can output a first control signal to the input end of the change-over switch. The change-over switch comprises six other ports besides an input end connected with the microprocessor. When the change-over switch receives the first control signal, the second section is connected with a third end, the second end of the control signal is connected with a standing signal, the standing signal can be 3.3V, the third end is connected with the input end of the controlled equipment, and the output end of the controlled equipment is grounded. And connecting the second end with the third end, namely connecting the standing signal into the controlled equipment when the second end is connected, wherein the standing signal is used for detecting whether a loop in the controlled equipment is normal or not when the controlled equipment is not started. Meanwhile, when the change-over switch receives the first control signal, the connection between the fourth end and the sixth end is conducted, the fourth end is connected with an energy storage element in the charge pump current, the sixth end is grounded, when the connection between the sixth end and the sixth end is conducted, the energy storage element is not connected with controlled equipment, and the energy storage element does not supply power to the controlled equipment.

In addition, as shown in fig. 2, the fifth end and the first end of the switch are respectively connected to the input end and the output end of the charge pump circuit, and the input end of the charge pump circuit is simultaneously connected to a first start signal, and the first start signal can be 24V direct current. The output end of the charge pump circuit receives the first control signal based on the fifth end of the change-over switch, and at the moment, the change-over switch disconnects the first end and the third end based on the first control signal. When the connection between the first end and the third end of the change-over switch is disconnected, the charge pump circuit is not conducted with the controlled equipment, at this time, the charge pump circuit charges the energy storage element through the electric energy provided by the first starting signal, and the energy storage element stores the obtained electric energy.

When the controlled equipment is required to be started, the microprocessor outputs a second control signal, the second control signal is transmitted to the change-over switch through the input end of the change-over switch, the change-over switch disconnects the connection between the second end and the third end of the change-over switch based on the second control signal, and disconnects the connection between the fourth end and the sixth end of the change-over switch. And the first end and the third end of the switching switch are connected simultaneously, so that the charge pump circuit and the controlled device are conducted, and the charge pump circuit can supply power for the controlled device. And meanwhile, the connection between the fourth end and the fifth end of the change-over switch is conducted, at the moment, the electric energy in the energy storage element and the first starting signal are jointly used as the output electric energy of the charge pump circuit, the voltage of the output electric energy of the energy storage element can be 24V, and at the moment, the total output voltage of the charge pump circuit is 48V. The connection mode of the change-over switch is controlled by the control signal output by the microprocessor, so that the voltage output by the charge pump circuit is controlled, the electric energy in the energy storage element and the electric energy provided by the first starting signal are superposed into the total output electric energy of the charge pump circuit, and the power loss between the power supply and the controlled equipment is solved by increasing the voltage output by the control charge pump circuit.

Optionally, fig. 3 is a schematic structural diagram of another fire protection linkage system start-stop control circuit provided in the first embodiment of the present application, as shown in fig. 3, where the switch includes: a coil switch, a first controllable switch N1 and a first resistor R1; the coil switch comprises a coil, a first electromagnetic switch K1 and a second electromagnetic switch K2;

the first end of the first resistor R1 is connected to the microprocessor, the second end of the first resistor R1 is connected with the first end of the first controllable switch N1, the second end of the first controllable switch N1 is connected with the first end of the coil, the third end of the first controllable switch N1 is grounded and is used for disconnecting the connection between the second end and the third end of the first controllable switch N1 corresponding to a first control signal and conducting the connection between the second end and the third end of the first controllable switch N1 corresponding to a second control signal;

the second end of the coil is connected with a second starting signal;

a first end of the first electromagnetic switch K1 is connected with the input end of the charge pump circuit, a third end of the first electromagnetic switch K1 is connected with the energy storage element, a second end of the first electromagnetic switch K1 is grounded and used for responding to a first control signal, conducting the connection between the second end and the third end of the first electromagnetic switch K1 and responding to a second control signal, and conducting the connection between the first end and the third end of the first electromagnetic switch K1;

the first end of the second electromagnetic switch K2 is connected with the output end of the charge pump circuit, the second end of the second electromagnetic switch K2 is connected with the standing signal, the third end of the second electromagnetic switch K2 is connected with the input end of the controlled device, and the second electromagnetic switch K2 is used for responding to a first control signal to conduct the connection between the second end and the third end of the second electromagnetic switch K2 and responding to a second control signal to conduct the connection between the first end and the third end of the second electromagnetic switch K2.

In combination with a scene example, the diverter switch mainly comprises five parts, namely a first controllable switch, a first resistor, a coil, a first electromagnetic switch and a second electromagnetic switch, and the connection relation is shown in fig. 3. When the controlled device is not ready to be used, the microprocessor outputs a first control signal, the first control signal is transmitted to the first controllable switch through the first resistor, the first controllable switch cannot conduct connection between the coil and the ground based on the first control signal, at the moment, the coil does not work, and the first resistor can play a role in limiting current. The first port of the first electromagnetic switch is a fifth port of the switch, the second port of the first electromagnetic switch is a sixth port of the switch, and the third port of the first electromagnetic switch is a fourth port of the switch. When the coil is not conducted, the second end of the first electromagnetic switch is conducted with the third end, and then a first starting signal is connected with the charge pump circuit to charge the energy storage element. The first end of the second electromagnetic switch is a first port of the change-over switch, the second end of the second electromagnetic switch is a second port of the change-over switch, and the third port of the second electromagnetic switch is a third port of the change-over switch. And when the controlled device does not need to be started, the second port of the second electromagnetic switch is connected with the third port, and the standing signal is connected to the controlled device through the second electromagnetic switch.

When the controlled equipment needs to be started, the microprocessor outputs a second control signal, at the moment, the first controllable switch conducts connection between the coil and the ground based on the second control signal, and at the moment, a second starting signal connected with the coil forms a passage through the coil and the first controllable switch. When the coil is electrified, the connection between the second end and the third end of the first electromagnetic switch is disconnected, and the connection between the first end and the third end of the first electromagnetic switch is conducted. At this time, the electric energy in the energy storage element and the first start signal are taken together as the output electric energy of the charge pump circuit, the voltage of the output electric energy of the energy storage element can be 24V, and at this time, the total output voltage of the charge pump circuit is 48V. The second electromagnetic switch can disconnect the connection between the second end and the third end of the second electromagnetic switch based on the second control signal, and the connection between the first end and the third end is conducted, so that electric energy output by the charge pump circuit can be transmitted to the controlled equipment.

Optionally, fig. 4 is a schematic structural diagram of a start-stop control circuit of a fire protection linkage system according to a first embodiment of the present application, as shown in fig. 4, where the first controllable switch is an NMOS transistor.

The first controllable switch may be provided as an N-Metal-Oxide-Semiconductor (NMOS) transistor, which is referred to as a first NMOS transistor. And connecting the grid electrode of the first NMOS transistor with the first resistor, connecting the source electrode of the first NMOS transistor with the ground, and connecting the drain electrode of the first NMOS transistor with the coil. The first control signal output by the microprocessor may be at a low level, when the first NMOS transistor is not turned on, and the second control signal may be at a high level, when the first NMOS transistor is turned on.

Optionally, fig. 5 is a schematic structural diagram of a start-stop control circuit of a fire protection linkage system according to a first embodiment of the present application, as shown in fig. 5, where the charge pump circuit includes: the first diode VD1, the second diode VD2 and the energy storage element;

the first end of the first diode VD1 is connected with the first starting signal, the second end of the first diode VD1 is connected with the first end of the second diode VD2, and the second end of the second diode VD2 is connected with the first end of the second electromagnetic switch K2;

the first end of the energy storage element is connected with the third end of the first electromagnetic switch K1, and the second end of the energy storage element is connected with the second end of the first diode VD 1.

In combination with the scenario example, the charge pump circuit further includes two diodes, namely a first diode and a second diode, in addition to the energy storage element, where the first diode and the second diode can control the current to be conducted in a direction from left to right as shown in the figure. The presence of the first diode and the second diode may prevent the first start signal from flowing in reverse to the current provided in the energy storage element.

Optionally, fig. 6 is a schematic structural diagram of a start-stop control circuit of a fire protection linkage system according to a first embodiment of the present application, as shown in fig. 6, where the energy storage element is a capacitor E1.

In combination with the scenario example, since the capacitor has the capability of charging and discharging, the energy storage element may be set as a capacitor, the positive electrode of the capacitor is connected to the second end of the first diode, and the negative electrode of the capacitor is connected to the third end of the first electromagnetic switch. When the capacitor is charged, the electric energy of the first starting signal reaches the positive electrode of the capacitor through the first diode to charge the capacitor, and when the capacitor is discharged, the electric energy in the capacitor transmits the electric energy outwards through the positive electrode and reaches the second electromagnetic switch through the second diode.

Optionally, fig. 7 is a schematic structural diagram of a start-stop control circuit of another fire protection linkage system according to the first embodiment of the present application, as shown in fig. 7, where the circuit further includes: the second resistor R2 and the third resistor R3.

The first end of the second resistor R2 is connected to the microprocessor, the second end of the second resistor R2 is connected with the output end of the controlled device, the first end of the third resistor R3 is connected with the output end of the controlled device, and the second end of the third resistor R3 is grounded.

And in combination with a scene example, a second resistor and a third resistor are arranged between the controlled device and the ground, the microprocessor is connected with the second resistor, and when the controlled device is not started, the standing signal passes through the second resistor and the third resistor through the controlled device and then is grounded. The microprocessor detects the voltage of the second resistor and sets the minimum threshold value and the maximum threshold value of the voltage of the second resistor. And when the value of the second resistor is detected to be larger than the maximum threshold value, the output circuit of the controlled device can be indicated to have short circuit, when the value of the second resistor is detected to be smaller than the minimum threshold value, the output circuit of the controlled device can be indicated to have open circuit, and when the value of the second resistor is detected to be located between the minimum threshold value and the maximum threshold value, the output circuit of the controlled device can be indicated to be normal. When the output circuit of the controlled device has short circuit and open circuit, the charge pump circuit can not be started, and when the output circuit of the controlled device is normal, the charge pump circuit can be started normally.

Optionally, fig. 8 is a schematic structural diagram of a start-stop control circuit of another fire protection linkage system according to the first embodiment of the present application, as shown in fig. 8, where the circuit further includes: the second controllable switch N2, the fourth resistor R4 and the fifth resistor R5;

the first end of the second controllable switch N2 is connected with the microprocessor, the second end of the second controllable switch N2 is connected with the standing signal, the third end of the second controllable switch N2 is connected with the first end of the fourth resistor R4, the second end of the fourth resistor R4 is connected with the second end of the second electromagnetic switch K2, the second end and the third end of the second controllable switch N2 are connected with a third control signal for receiving the microprocessor, and the connection between the second end and the third end of the second controllable switch N2 is disconnected with a fourth control signal for receiving the microprocessor;

the first end of the fifth resistor R5 is connected with the standing signal, and the second end of the fifth resistor R5 is grounded.

In combination with the scene example, a second controllable switch and a fourth resistor are arranged between the standing signal and the second electromagnetic switch, the second controllable switch is further connected with the microprocessor, specifically, a first end of the second controllable switch is connected with the microprocessor, a second end of the controllable switch is connected with the standing signal, a third end of the controllable switch is connected with the fourth resistor, and the fourth resistor can play a role of protecting a circuit in a circuit. The controllable switch can control the conduction condition between the standing signal and the second electromagnetic switch based on a control signal of the microprocessor. For example, when a third control signal of the microprocessor is received, the second end and the third end of the second controllable switch are conducted, so that the standing signal is connected with the second electromagnetic switch. And when a fourth control signal of the microprocessor is received, the second end and the third end of the second controllable switch are conducted, so that the standing signal is disconnected from the second electromagnetic switch.

When the second controllable switch is conducted, but the second electromagnetic switch is not conducted, the current generated by the standing signal cannot be conducted to the controlled device through the second electromagnetic switch, so that the internal current is easily generated in the second controllable switch, a fifth resistor can be arranged, one end of the fifth resistor is connected to the standing signal, and the other end of the fifth resistor is grounded, so that the current generated by the standing signal can be conducted to the ground, and the effect of the protection circuit is realized.

Optionally, fig. 9 is a schematic structural diagram of a start-stop control circuit of a fire protection linkage system according to a first embodiment of the present application, and as shown in fig. 9, the second controllable switch N2 is an NMOS transistor.

In combination with the scenario example, the second controllable switch may also be selected as an NMOS transistor, and may be used as a second NMOS transistor, where a gate of the second NMOS transistor is connected to the microprocessor, a drain of the second NMOS transistor is connected to the rest signal, and a source of the second NMOS transistor is connected to the fourth resistor. And after receiving the fourth control signal from the microprocessor, switching on the connection between the second NMOS source electrode and the drain electrode.

Optionally, fig. 10 is a schematic structural diagram of a start-stop control circuit of another fire protection linkage system according to the first embodiment of the present application, as shown in fig. 10, where the circuit further includes a push switch S1;

the first end of the push switch S1 is grounded, and the second end of the push switch S1 is connected to the microprocessor.

In combination with the scene example, when the push switch is pushed down, the push switch is connected with the microprocessor, the microprocessor outputs a first control signal outwards before receiving the push signal of the push switch, and outputs a second control signal outwards after receiving the push signal of the push switch.

Optionally, fig. 11 is a schematic structural diagram of a start-stop control circuit of another fire protection linkage system provided in the first embodiment of the present application, as shown in fig. 11, where the microprocessor includes a first pin PA1, a second pin PA2, a third pin PA3, a fourth pin PA4, a start end and a ground end;

the second end of the push switch S1 is connected to a first pin PA1 of the microprocessor;

the first end of the second controllable switch N2 is connected to the second pin PA2 of the microprocessor;

the first end of the second resistor R2 is connected to a third pin PA3 of the microprocessor;

the second end of the first resistor R1 is connected to a fourth pin PA4 of the microprocessor;

the ground of the microprocessor is grounded.

In connection with the scene example: the microprocessor comprises a plurality of pins, and the pins currently used can be defined as a first pin, a second pin, a third pin and a fourth pin. The first pin is connected with the press switch, and receives a press signal of the press switch through the first pin. The second pin is connected with the second controllable switch, the fourth pin is connected with the first resistor, and when the microprocessor does not receive the pressing signal through the first pin, the microprocessor sends a first control signal to the second controllable switch through the second pin and sends a first control signal to the first controllable switch through the fourth pin. And after the microprocessor receives the pressing signal, a second control signal is sent to the second controllable switch through the second pin, and a second control signal is sent to the first controllable switch through the fourth pin. And a third pin of the microprocessor is connected with the second resistor, and the voltage of the second resistor is detected through the third pin to judge whether the controlled equipment has open circuit or short circuit. In addition, the starting end VCC of the microprocessor is connected with the third starting signal, the grounding end of the microprocessor is grounded, the third starting signal can enable the microprocessor to start normally, and current generated inside the microprocessor is led into the ground through the grounding end.

According to the embodiment, the connection mode of the change-over switch is controlled through the control signal output by the microprocessor, so that the voltage output by the charge pump circuit is controlled, the electric energy in the energy storage element and the electric energy provided by the first starting signal are superposed into the total output electric energy of the charge pump circuit, and the power loss between the power supply and the controlled equipment is solved by increasing the voltage output by the control charge pump circuit.

It should be noted that, for simplicity of description, the foregoing method embodiments are all expressed as a series of action combinations, but it should be understood by those skilled in the art that the present application is not limited by the order of actions described, as some steps may be performed in other order or simultaneously in accordance with the present application. Further, those skilled in the art will also appreciate that the embodiments described in the specification are all alternative embodiments, and that the acts and modules referred to are not necessarily required in the present application.

Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the utility model disclosed herein. This application is intended to cover any variations, uses, or adaptations of the application following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the application pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.

It is to be understood that the present application is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the application is limited only by the appended claims.

Claims

1. A fire protection linkage system start-stop control circuit, comprising: a microprocessor, a charge pump circuit and a change-over switch;

2. The circuit of claim 1, wherein the switch comprises: the coil switch, the first controllable switch and the first resistor; the coil switch comprises a coil, a first electromagnetic switch and a second electromagnetic switch;

the second end of the coil is connected with a second starting signal;

3. The circuit of claim 2, wherein the first controllable switch is an NMOS transistor.

4. The circuit of claim 2, wherein the charge pump circuit comprises: the first diode, the second diode and the energy storage element;

5. The circuit of claim 4, wherein the energy storage element is a capacitor.

6. The circuit of claim 2, wherein the circuit further comprises: the second resistor R2 and the third resistor R3;

7. The circuit of claim 6, wherein the circuit further comprises: the second controllable switch, the fourth resistor and the fifth resistor;

8. The circuit of claim 7, wherein the second controllable switch is an NMOS transistor.

9. The circuit of claim 8, further comprising a push switch;

10. The circuit of claim 9, wherein the microprocessor comprises a first pin, a second pin, a third pin, a fourth pin, a start terminal, and a ground terminal;

the ground of the microprocessor is grounded.