CN218038214U - Manual alarm button control circuit and manual alarm button - Google Patents

Abstract

The application relates to a manual alarm button control circuit and a manual alarm button, which comprise a key driving module, an NB-IOT wireless communication module, an optical indication module, a main control chip and a power supply module; the control end of the key driving module is electrically connected with the receiving end of the main control chip, the communication interface of the main control chip is electrically connected with the communication interface of the NB-IOT wireless communication module, the control end of the main control chip is electrically connected with the receiving end of the optical indication module, and the power output end of the power supply module is electrically connected with the power input ends of the key driving module, the main control chip and the NB-IOT wireless communication module respectively. The button is manually pressed to control the key driving module to send a fire alarm signal to the main control chip, the NB-IOT wireless communication module is used for carrying out communication transmission, and the NB-IOT wireless communication module can effectively prevent large-area wiring in the network installation process, so that faults can be quickly and accurately solved in the fault overhauling process, and the maintenance cost is reduced.

Description

Manual alarm button control circuit and manual alarm button

Technical Field

The application relates to the field of fire alarm, in particular to a manual alarm button control circuit and a manual alarm button.

Background

The manual alarm button is a common device for preventing fire, and is mainly used for informing related personnel of the fire sending condition by manually pressing the alarm button. Particularly, when a fire disaster happens and a corresponding alarm signal is not given out by a field fire alarm in time, the purpose of reducing loss can be realized by manual alarm.

Manual alarm buttons on the market usually adopt a fire bus communication mode, large-area complex wiring is involved, troubleshooting is difficult in the using process, and the overhauling cost is high.

SUMMERY OF THE UTILITY MODEL

In view of this, the present application provides a manual alarm button control circuit and a manual alarm button, which send an alarm signal by manually pressing the alarm button, and transmit alarm information by using an NB-IOT wireless communication module to solve the current problems.

According to one aspect of the application, a manual alarm button control circuit is provided, and comprises a key driving module, an NB-IOT wireless communication module, an optical indication module, a main control chip and a power supply module;

the control end of the key driving module is electrically connected with the receiving end of the main control chip;

the communication interface of the main control chip is electrically connected with the communication interface of the NB-IOT wireless communication module; the control end of the main control chip is electrically connected with the receiving end of the optical indication module;

and the power output end of the power supply module is electrically connected with the power input ends of the key driving module, the main control chip and the NB-IOT wireless communication module respectively.

In one possible implementation manner, the NB-IOT wireless communication module includes an NB-IOT module, a first triode, a first resistor, a second resistor, and a first capacitor;

an RXD pin of the NB-IOT module is electrically connected with one end of the first resistor, and the other end of the first resistor is electrically connected with a U0_ TX pin of the main control chip; the pin of the NB-IOT module TXD is electrically connected with the emitting electrode of the first triode, one end of the second resistor is electrically connected with the base electrode of the first triode after the second resistor and the first capacitor are connected in parallel, the other end of the second resistor is electrically connected with the VDD-EXT pin of the NB-IOT module, the collector electrode of the first triode is electrically connected with the U0_ RX pin of the main control chip and one end of the second resistor respectively, and the other end of the second resistor is electrically connected with the power module.

In a possible implementation manner, the NB-IOT wireless communication module further includes a second triode, a third resistor, a fourth resistor, and a second capacitor;

a RESET pin of the NB-IOT module is electrically connected with a collector of the second triode, a base of the second triode is electrically connected with the third resistor, and the other end of the third resistor is electrically connected with a PA11 pin of the main control chip; one end of the fourth resistor is electrically connected with the base electrode of the second triode, and the other end of the fourth resistor is grounded; and one end of the second capacitor is electrically connected with the collector electrode of the second triode, and the other end of the second capacitor is grounded.

In one possible implementation manner, the key driving module includes a fifth resistor, a sixth resistor, a key, and a terminal;

one end of the fifth resistor is electrically connected with a U1_ TX pin of the main control chip, the other end of the fifth resistor is electrically connected with the sixth resistor and a first port of the key respectively, the other end of the sixth resistor is electrically connected with the power module, a second port of the key is grounded, and a fourth port and a fifth port of the key are electrically connected with two ends of the terminal respectively.

In one possible implementation manner, the light indication module includes a first indicator light, a second indicator light, a third indicator light, a seventh resistor, an eighth resistor, and a ninth resistor;

the anode of the first indicator light is electrically connected with the power supply module, the cathode of the first indicator light is electrically connected with one end of the seventh resistor, and the other end of the seventh resistor is electrically connected with the PA01/LPU1_ RX pin of the main control chip;

the anode of the second indicator light is electrically connected with the power supply module, the cathode of the second indicator light is electrically connected with one end of the eighth resistor, and the other end of the eighth resistor is electrically connected with a PA00/LPU1_ TX pin of the main control chip;

the anode of the third indicator light is electrically connected with the power supply module, the cathode of the third indicator light is electrically connected with one end of the ninth resistor, and the other end of the ninth resistor is electrically connected with the U1_ TX cathode of the main control chip.

In one possible implementation, the NB-IOT wireless communication module further includes a tenth resistor and an eleventh resistor;

an RI pin of the NB-IOT module is electrically connected with one end of the tenth resistor, and the other end of the tenth resistor is electrically connected with a PA12 pin of the main control chip; one end of the eleventh resistor is electrically connected with a PA12 pin of the main control chip, and the other end of the eleventh resistor is electrically connected with the power supply module.

In a possible implementation manner, the circuit further comprises a crystal oscillator, a third capacitor and a fourth capacitor;

two ends of the crystal oscillator are respectively and electrically connected with a UART1_ TX pin and a UART1_ RX pin of the main control chip;

one end of the third capacitor is electrically connected with one end of the crystal oscillator, and the other end of the third capacitor is grounded; one end of the fourth capacitor is electrically connected with the other end of the crystal oscillator, and the other end of the fourth capacitor is grounded.

In a possible implementation manner, the circuit further comprises a fifth capacitor and a twelfth resistor;

one end of the twelfth resistor is electrically connected with the power supply module, the other end of the twelfth resistor is electrically connected with a RESETB pin of the main control chip and one end of the fifth capacitor respectively, and the other end of the fifth capacitor is grounded

In one possible implementation, the power module includes a DC power supply and a pi-type LC filter module;

two ends of the pi-type LC filter module are respectively electrically connected with the anode and the cathode of the DC power supply; the pi-type LC filter module comprises a first inductor, a second inductor, a sixth capacitor and a seventh capacitor;

the two ends of the sixth capacitor are respectively electrically connected with the positive electrode and the negative electrode of the DC power supply, one end of the sixth capacitor is electrically connected with one end of the first inductor, the other end of the first inductor is respectively electrically connected with one end of the seventh capacitor and the main control chip V _ CPU, the other end of the seventh capacitor is electrically connected with one end of the second inductor, and the other end of the second inductor is respectively electrically connected with one end of the sixth capacitor and the main control chip G _ CPU.

According to another aspect of the present application, there is provided a manual alarm button comprising the manual alarm button control circuit described in any one of the above possible implementations.

The beneficial effect of this application:

the alarm button is pressed manually to send out an alarm signal, so that the fire alarm gives an alarm manually under the condition that the fire alarm does not send out a corresponding alarm signal in time, and the occurrence of a fire is prompted. The main control chip receives the manual alarm signal and then drives the NB-IOT wireless communication module to perform data transmission, alarm information is sent to a background server to prompt fire occurrence, the server pushes the fire information to a user in time, and remote fire monitoring is achieved. The NB-IOT wireless communication module is used as a communication mode, complex wiring installation required in the network installation process is not needed, the problem that large-area troubleshooting is needed to solve when a fault occurs is effectively avoided, and the installation and maintenance cost is saved.

Other features and aspects of the present application will become apparent from the following detailed description of exemplary embodiments, which proceeds with reference to the accompanying drawings.

Drawings

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

FIG. 1 illustrates a schematic diagram of a manual alarm button control circuit according to an embodiment of the present application;

fig. 2 shows a circuit diagram of an NB-IOT wireless communication module of an embodiment of the present application;

fig. 3 shows a circuit diagram of a main control chip of an embodiment of the present application;

FIG. 4 is a circuit diagram of a key driving module according to an embodiment of the present application;

FIG. 5 shows a circuit diagram of an optical indicating module according to an embodiment of the present application;

fig. 6 shows a circuit diagram of a power module of an embodiment of the present application.

Detailed Description

Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. In the drawings, like reference numbers indicate functionally identical or similar elements. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

It will be understood, however, that the terms "central," "longitudinal," "lateral," "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the present application or for simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be considered limiting of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.

Furthermore, in the following detailed description, numerous specific details are set forth in order to provide a better understanding of the present application. It will be understood by those skilled in the art that the present application may be practiced without some of these specific details. In some instances, methods, means, elements and circuits that are well known to those skilled in the art have not been described in detail so as not to obscure the present application.

FIG. 1 illustrates a schematic diagram of a manual alarm button control circuit according to an embodiment of the present application; fig. 2 shows a circuit diagram of an NB-IOT wireless communication module of an embodiment of the present application; fig. 3 shows a circuit diagram of a main control chip of an embodiment of the present application; FIG. 4 is a circuit diagram of a key driving module according to an embodiment of the present application; FIG. 5 shows a circuit diagram of an optical indicating module according to an embodiment of the present application; fig. 6 shows a circuit diagram of a power module according to an embodiment of the present application. As shown in fig. 1, the manual alarm button control circuit includes a key driving module 200, an NB-IOT wireless communication module 400, an optical indication module 300, a main control chip 100 and a power supply module 500; the control end of the key driving module 200 is electrically connected with the receiving end of the main control chip 100; the communication interface of the main control chip 100 is electrically connected with the communication interface of the NB-IOT wireless communication module 400; the control end of the main control chip 100 is electrically connected with the receiving end of the optical indicating module 300; the power output end of the power module 500 is electrically connected to the power input ends of the key driving module 200, the main control chip 100 and the NB-IOT wireless communication module 400, respectively.

In this embodiment, the main control chip 100 processes the related alarm operation, specifically, receives the signal from the key driving module 200, and controls the light indication module 300 to send the light signal when alarming, and controls the NB-IOT wireless communication module 400 to send the alarm information. The NB-IOT wireless communication module 400 can transmit the fire alarm information to the user in time in the form of telephone, etc., so as to realize the remote monitoring of the fire alarm. It should be noted that the adopted main control chip 100 adopts an HC32L130J8TA chip, which is a low power consumption chip, and can determine that a fire occurs when an alarm button is manually pressed. It should be noted that, the NB-IOT wireless communication module 400 is used for communication transmission, and a complex wiring manner is not required in the installation process of the manual alarm button, so that faults can be timely and accurately eliminated in the maintenance process, and the safety is effectively guaranteed.

In one embodiment, the NB-IOT wireless communication module 400 shown in fig. 2 includes an NB-IOT module BC260Y-CN, a first transistor VT2, a first resistor R19, a second resistor R20, and a first capacitor C19; an RXD pin of the NB-IOT module is electrically connected with one end of a first resistor R19, and the other end of the first resistor R19 is electrically connected with a U0_ TX pin of the main control chip 100; the TXD pin of the NB-IOT module BC260Y-CN is electrically connected with the emitting electrode of the first triode VT2, one end of the second resistor R20 is electrically connected with the base electrode of the first triode VT2 after being connected with the first capacitor C19 in parallel, the other end of the second resistor R is electrically connected with the NB-IOT module VDD-EXT pin, the collector electrode of the first triode VT2 is electrically connected with the U0_ RX pin of the main control chip and one end of the second resistor R20 respectively, and the other end of the second resistor R20 is electrically connected with the power supply module 500.

In this embodiment, the NB-IOT wireless communication module 400 communicates through the NB-IOT module BC260Y-CN, and specifically, the NB-IOT module BC260Y-CN transmits a signal to the NB-IOT wireless communication module through signal transmission between the RI-MCU _ RX and the RI-MCU _ TX, and after the main control chip 100 receives the alarm signal sent by the key driving module 200, the alarm signal is transmitted to the NB-IOT wireless communication module.

In one specific embodiment, the NB-IOT wireless communication module 400 further includes a second transistor VT1, a third resistor R9, a fourth resistor R13, and a second capacitor C14; a RESET pin of the NB-IOT module is electrically connected with a collector electrode of a second triode VT1, a base electrode of the second triode VT1 is electrically connected with a third resistor R9, and the other end of the third resistor R9 is electrically connected with a PA11 pin of the main control chip; one end of a fourth resistor R13 is electrically connected with the base electrode of the second triode VT1, and the other end of the fourth resistor R is grounded; one end of the second capacitor C14 is electrically connected to the collector of the second transistor VT1, and the other end is grounded.

In this embodiment, the second transistor VT1 controls the RESET of the NB-IOT module BC260Y-CN, and specifically, when the level of the RESET pin of the NB-IOT module BC260Y-CN is pulled low, the NB-IOT module is RESET.

In one embodiment, the key driving module 200 shown in fig. 4 includes a fifth resistor R24, a sixth resistor R6, a key SK1 and a terminal XT3; one end of a fifth resistor R24 is electrically connected with a U1_ TX pin of the main control chip 100, the other end of the fifth resistor R24 is electrically connected with a sixth resistor R6 and a first port of the key SK1 respectively, the other end of the sixth resistor R6 is electrically connected with the power module 500, a second port of the key SK1 is grounded, and a fourth port and a fifth port of the key SK1 are electrically connected with two ends of a terminal XT3 respectively

In this embodiment, when a fire occurs, an alarm signal is transmitted to the main control chip 100 by pressing the key SK 1. Specifically, when the KEY SK1 is pressed, the FIRE-KEY signal becomes low in voltage, and provides a determination signal to the main control chip 100. When the KEY SK1 is pressed, the pin 1 and the pin 2 are connected, the fifth resistor R24 is grounded, and the FIRE-KEY signal is low, so as to provide a signal to the main control chip 100.

In one specific embodiment, the light indication module 300 shown in fig. 5 includes a first indicator lamp HL1, a second indicator lamp HL2, a third indicator lamp HL3, a seventh resistor R10, an eighth resistor R11, and a ninth resistor R12; the anode of the first indicator lamp HL1 is electrically connected with the power module 500, the cathode of the first indicator lamp HL1 is electrically connected with one end of a seventh resistor R10, and the other end of the seventh resistor R10 is electrically connected with a pin of the main control chip PA01/LPU1_ RX; the anode of the second indicator lamp HL2 is electrically connected with the power module 500, the cathode of the second indicator lamp HL2 is electrically connected with one end of an eighth resistor R11, and the other end of the eighth resistor R11 is electrically connected with a PA00/LPU1_ TX pin of the main control chip 100; the anode of the third indicator lamp HL3 is electrically connected with the power module 500, the cathode of the third indicator lamp HL3 is electrically connected with one end of a ninth resistor R12, and the other end of the ninth resistor R12 is electrically connected with the U1_ TX cathode of the main control chip.

In this embodiment, the first indicator lamp HL1 is a communication indicator lamp, the second indicator lamp HL2 is a fire alarm indicator lamp, and the third indicator lamp HL3 is a fault indicator lamp. Specifically, main control chip 100 sends LED1 signal to first pilot lamp, is luminous by LED1 control communication pilot lamp, and when manual alarm button pressed, main control chip 100 received alarm signal and sent LED2 signal to second pilot lamp HL2, need explain that second pilot lamp HL2 is the red light, switches on when receiving LED2 for the low level, consequently when the conflagration takes place, light indication module 300 sends red pilot signal suggestion relevant personnel and reports to the police. It should also be noted. The third pilot lamp HL3 is the yellow light promptly trouble pilot lamp, and when manual alarm button broke down, main control chip 100 sent the luminous through LED3 signal drive trouble pilot lamp, reminded the emergence of trouble through sending the yellow light, can in time overhaul guarantee safety.

In one particular embodiment, the NB-IOT wireless communication module 400 further includes tenth and eleventh resistors R16 and R18; an RI pin of the NB-IOT module is electrically connected with one end of a tenth resistor R16, and the other end of the tenth resistor R16 is electrically connected with a PA12 pin of the main control chip 100; one end of the eleventh resistor R18 is electrically connected to the PA12 pin of the main control chip 100, and the other end is electrically connected to the power module 500.

In one embodiment, as shown in fig. 3, the capacitor further includes a crystal oscillator G1, a third capacitor C1, and a fourth capacitor C7; two ends of the crystal oscillator G1 are respectively and electrically connected with a UART1_ TX pin and a UART1_ RX pin of the main control chip 100; one end of the third capacitor C1 is electrically connected with one end of the crystal oscillator G1, and the other end of the third capacitor C is grounded; one end of the fourth capacitor C7 is electrically connected to the other end of the crystal oscillator G1, and the other end is grounded.

In this embodiment, the crystal oscillator G1 is used to provide the operating clock of the main control chip, and the same crystal oscillator is used to facilitate the synchronization of the parts. It should be noted that the operating voltage of the main control chip is 2V to 5.5V, and the power consumption is 0.5uA during deep sleep.

In one specific embodiment, the capacitor further comprises a fifth capacitor C13 and a twelfth resistor R7; one end of the twelfth resistor R7 is electrically connected to the power module 500, the other end of the twelfth resistor R7 is electrically connected to the RESETB pin of the main control chip 100 and one end of the fifth capacitor C13, respectively, and the other end of the fifth capacitor C13 is grounded.

In this embodiment, the power module 500 is electrically connected to one end of the twelfth resistor R7, the other end of the twelfth resistor R7 is connected to the fifth capacitor C13 and then grounded, the RESETB pin of the main control chip is connected to the NRST signal, and when the NRST inputs a low level, the main control chip 100 is in a reset state and the reset process always maintains the low level.

In one embodiment, the power module 500 shown in FIG. 6 includes a DC power supply B1 and a π LC filter module 510; two ends of the pi-type LC filter module 510 are respectively electrically connected with the anode and the cathode of the DC power supply B1; the pi-type LC filter module 510 includes a first inductor L2, a second inductor L3, a sixth capacitor C22, and a seventh capacitor C20; two ends of a sixth capacitor C22 are respectively electrically connected with the positive electrode and the negative electrode of the DC power supply B1, one end of the sixth capacitor C22 is electrically connected with one end of a first inductor L2, the other end of the first inductor L2 is respectively electrically connected with one end of a seventh capacitor C20 and a main control chip V _ CPU, the other end of the seventh capacitor C20 is electrically connected with one end of a second inductor L3, and the other end of the second inductor L3 is respectively electrically connected with one end of the sixth capacitor C22 and the main control chip G _ CPU.

In this embodiment, a power supply module provides working power for the main control chip 100, the key driving module 200, the NB-IOT wireless communication module 400, and the light indication module 300, specifically, a DC power supply is 3V, and power is supplied to each circuit after filtering by the filtering module.

Based on any preceding arbitrary manual alarm button control circuit, this disclosure still provides a manual alarm button. Wherein, the manual alarm button of the embodiment of the present disclosure includes the manual alarm button as described in any one of the above.

The foregoing description of the embodiments of the present application has been presented for purposes of illustration and description and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or improvements to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims (10)

1. A manual alarm button control circuit is characterized by comprising a key driving module, an NB-IOT wireless communication module, an optical indication module, a main control chip and a power supply module;

the control end of the key driving module is electrically connected with the receiving end of the main control chip;

the communication interface of the main control chip is electrically connected with the communication interface of the NB-IOT wireless communication module; the control end of the main control chip is electrically connected with the receiving end of the optical indication module;

and the power output end of the power supply module is electrically connected with the power input ends of the key driving module, the main control chip and the NB-IOT wireless communication module respectively.

2. The manual alarm button control circuit of claim 1, wherein the NB-IOT wireless communication module comprises an NB-IOT module, a first triode, a first resistor, a second resistor, a first capacitor;

an RXD pin of the NB-IOT module is electrically connected with one end of the first resistor, and the other end of the first resistor is electrically connected with a U0_ TX pin of the main control chip; the pin of the NB-IOT module TXD is electrically connected with the emitting electrode of the first triode, one end of the second resistor is electrically connected with the base electrode of the first triode after the second resistor and the first capacitor are connected in parallel, the other end of the second resistor is electrically connected with the VDD-EXT pin of the NB-IOT module, the collector electrode of the first triode is electrically connected with the U0_ RX pin of the main control chip and one end of the second resistor respectively, and the other end of the second resistor is electrically connected with the power module.

3. The manual alarm button control circuit of claim 1, wherein the NB-IOT wireless communication module further comprises a second transistor, a third resistor, a fourth resistor, and a second capacitor;

a RESET pin of the NB-IOT module is electrically connected with a collector of the second triode, a base of the second triode is electrically connected with the third resistor, and the other end of the third resistor is electrically connected with a PA11 pin of the main control chip; one end of the fourth resistor is electrically connected with the base electrode of the second triode, and the other end of the fourth resistor is grounded; and one end of the second capacitor is electrically connected with the collector electrode of the second triode, and the other end of the second capacitor is grounded.

4. The manual alarm button control circuit of claim 1, wherein the key drive module comprises a fifth resistor, a sixth resistor, a key, and a terminal;

one end of the fifth resistor is electrically connected with a U1_ TX pin of the main control chip, the other end of the fifth resistor is electrically connected with the sixth resistor and the first port of the key respectively, the other end of the sixth resistor is electrically connected with the power module, the second port of the key is grounded, and the fourth port and the fifth port of the key are electrically connected with the two ends of the terminal respectively.

5. The manual alarm button control circuit of claim 1, wherein the light indication module comprises a first indicator light, a second indicator light, a third indicator light, a seventh resistor, an eighth resistor, and a ninth resistor;

the anode of the first indicator light is electrically connected with the power supply module, the cathode of the first indicator light is electrically connected with one end of the seventh resistor, and the other end of the seventh resistor is electrically connected with the PA01/LPU1_ RX pin of the main control chip;

the anode of the second indicator light is electrically connected with the power supply module, the cathode of the second indicator light is electrically connected with one end of the eighth resistor, and the other end of the eighth resistor is electrically connected with a PA00/LPU1_ TX pin of the main control chip;

the anode of the third indicator light is electrically connected with the power module, the cathode of the third indicator light is electrically connected with one end of the ninth resistor, and the other end of the ninth resistor is electrically connected with the U1_ TX cathode of the main control chip.

6. The manual alert button control circuit of claim 1, wherein the NB-IOT wireless communication module further comprises a tenth resistor and an eleventh resistor;

an RI pin of the NB-IOT module is electrically connected with one end of the tenth resistor, and the other end of the tenth resistor is electrically connected with a PA12 pin of the main control chip; one end of the eleventh resistor is electrically connected with a PA12 pin of the main control chip, and the other end of the eleventh resistor is electrically connected with the power supply module.

7. The manual alarm button control circuit of claim 1, further comprising a crystal oscillator, a third capacitor, and a fourth capacitor;

two ends of the crystal oscillator are respectively and electrically connected with a UART1_ TX pin and a UART1_ RX pin of the main control chip;

one end of the third capacitor is electrically connected with one end of the crystal oscillator, and the other end of the third capacitor is grounded; one end of the fourth capacitor is electrically connected with the other end of the crystal oscillator, and the other end of the fourth capacitor is grounded.

8. The manual alarm button control circuit of claim 1, further comprising a fifth capacitor and a twelfth resistor;

one end of the twelfth resistor is electrically connected with the power supply module, the other end of the twelfth resistor is electrically connected with a RESETB pin of the main control chip and one end of the fifth capacitor respectively, and the other end of the fifth capacitor is grounded.

9. The manual alarm button control circuit of any one of claims 1-8, wherein the power module comprises a DC power source and a pi-type LC filter module;

two ends of the pi-shaped LC filter module are respectively and electrically connected with the anode and the cathode of the DC power supply; the pi-type LC filter module comprises a first inductor, a second inductor, a sixth capacitor and a seventh capacitor;

the two ends of the sixth capacitor are respectively electrically connected with the positive electrode and the negative electrode of the DC power supply, one end of the sixth capacitor is electrically connected with one end of the first inductor, the other end of the first inductor is respectively electrically connected with one end of the seventh capacitor and the main control chip V _ CPU, the other end of the seventh capacitor is electrically connected with one end of the second inductor, and the other end of the second inductor is respectively electrically connected with one end of the sixth capacitor and the main control chip G _ CPU.

10. A manual alarm button comprising the manual alarm button control circuit of any one of claims 1 to 9.

Images