CN210319429U

CN210319429U - Induction alarm circuit

Info

Publication number: CN210319429U
Application number: CN201921399866.9U
Authority: CN
Inventors: 苏远飞; 苏海洪
Original assignee: Shenzhen Qianhai San An Sheng Technology Co ltd
Current assignee: Shenzhen Qianhai San An Sheng Technology Co ltd
Priority date: 2019-08-23
Filing date: 2019-08-23
Publication date: 2020-04-14
Anticipated expiration: 2029-08-23

Abstract

The utility model provides a response alarm circuit, includes host system, response module, button module, alarm module, status indication module, communication module and power module, characterized by: the sensing module comprises a trigger device and a sensing circuit, signals output by the circuit change along with the change of the relative position of the trigger device and the sensing circuit, the output end of the sensing circuit is connected with an I/O port of the main control module, the key module is connected with the I/O port of the main control module, the communication module is connected with a data port of the main control module, and the main control module sends a starting signal to the alarm module when receiving the change of the output signals of the sensing circuit. This response warning circuit adopts the trigger device and the response device of separation to be used for detecting the action by forced induction device, and the response is sensitive reliable, when detecting to be produced the action by forced induction device, triggers the alarm and sends alarm signal, not only can realize showing abnormal conditions on the spot, can also realize the remote monitoring warning, improves the security of using the gas.

Description

Induction alarm circuit

Technical Field

The utility model relates to a monitoring technology field, more specifically say, it relates to a response warning circuit.

Background

The gas is rapidly developed and popularized in China, the number of gas users is greatly increased, and the probability of gas accidents is greatly increased. In recent years, the gas accidents of China emerge endlessly, and great threats are brought to physical and mental health and property safety of people. Government departments and gas companies in various regions are in a policy and management system, wherein household gas users are required to close an indoor gas valve when gas is not used, so that gas accidents caused by gas leakage due to aging and damage are prevented. There are also city requirements for installing gas leakage alarms.

The existing household gas leakage alarm judges whether gas leakage occurs or not by detecting the indoor gas concentration, only when the indoor gas concentration reaches a certain value, the gas leakage alarm gives an alarm, when the gas leakage is detected, a relatively serious leakage accident happens, fine leakage is difficult to detect, the detection sensitivity is low, delay exists, and the safety is poor; the work of the gas leakage alarm is greatly influenced by the environment, the gas leakage alarm is out of order and unknown, potential safety hazards exist, professional detection is needed every year, and the workload of a gas company is large.

Chinese patent application No. CN201721175715.6 discloses a pressure sensing device, which includes a housing and a flexible film disposed in the housing, wherein the flexible film divides the space in the housing into a first cavity and a second cavity, and the first cavity is provided with an air inlet connected to a device to be tested through the air inlet; pressure balance mechanisms are respectively arranged in the two cavities, and one ends of the two pressure balance mechanisms are butted and respectively positioned at two sides of the flexible film; when the air pressure in the two cavities is in a set state, the flexible film is in an initial tension state; when the pressure of the cavity gas communicated with the gas inlet is changed, the tension state of the flexible film is correspondingly changed, so that the pressure balance mechanisms on the two sides act to trigger induction signals. This pressure-sensitive device sensitivity is high, can detect slight leakage, and the security is high, responds to through the action to this pressure-sensitive device, can detect the atmospheric pressure change of gas pipeline.

An object of the utility model is to design a response warning circuit, it can cooperate with this forced induction device, detects the atmospheric pressure change in the gas pipeline to send alarm signal when atmospheric pressure is unusual, in time remind the user, guarantee to use the security of gas.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide an induction alarm circuit, it can be used to the forced induction device on, realizes abnormal conditions and reports to the police on the spot and remote alarm, in time with unusual information transmission to the householder, improves the security of using the gas.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a response alarm circuit, includes host system, response module, button module, alarm module, status indication module, communication module and power module, the response module is including trigger device and induction circuit, induction circuit includes the induction device, the signal of induction circuit output changes along with the change of trigger device with the relative position of induction device, induction circuit's output is connected with host system's IO port, and button module is connected with host system's IO port, communication module is connected with host system's data port, status indication module is connected with host system's IO port, host system receives when induction circuit's output signal changes, to alarm module sends start signal to outwards send alarm information.

As a preferable scheme: the sensing circuit comprises a Hall sensor H1, the model number of the Hall sensor is AH3144, the Hall sensor is used as a sensing device, a corresponding trigger device is a movable magnet, the base electrode of H1 is connected with a power supply VCC through a resistor R1, the emitter electrode of H1 is grounded, the collector electrode of H1 is grounded through a capacitor C1, a resistor R2 is connected between the base electrode of H1 and the collector electrode, and the collector electrode of H1 is connected with an I/O port of the main control module through a resistor R3.

As a preferable scheme: the sensing circuit further comprises an LED indicator lamp D1, the anode of the D1 is connected with a power supply VCC through a resistor R4, and the cathode of the D1 is connected with an I/O port of the main control module.

As a preferable scheme: the buzzer driving circuit comprises an NPN type triode Q1 and a buzzer J9, the positive electrode of J9 is connected with a power supply VCC through a resistor R5, the negative electrode of J9 is connected with the emitter of Q1, the base electrode of Q1 is connected with the pin 19 of U1 through a resistor R6, and the collector of Q1 is grounded.

As a preferable scheme: the power module is three-terminal voltage stabilizing circuit, it includes voltage stabilizing chip U3, U3's model is HT7533-SOT223, U3's No. 1 pin ground connection, U3's No. 2 output power VCC, U3's No. 2 pin passes through electric capacity C9 ground connection, be connected with electric capacity C3 between U3's No. 1 pin and No. 2 pin, U3's No. 3 pin passes through electric capacity C7 ground connection, and U3's No. 3 pin connection power VDD.

As a preferable scheme: the communication module is a WIFI communication module.

As a preferable scheme: WIFI communication module includes WIFI chip U2, and U2's model is TYMR3, and power VCC is connected to U2's No. 8 pins, and U2's No. 8 pins pass through electric capacity C2 ground connection, and U2's No. 9 pins ground connection, and U2's No. 15 pins pass through resistance R15 and are connected with host system data transmission pin, and U2's No. 16 pins pass through resistance R14 and are connected with host system's data reception pin.

As a preferable scheme: the state indicating module comprises an NPN type triode Q2, an LED indicator lamp D2, an LED indicator lamp D4, an LED indicator lamp D5, an LED indicator lamp D6 and an LED indicator lamp D7, wherein the anode of D2 is connected with a power supply VCC through a resistor R8, the cathode of D2 is connected with a pin No. 1 of U1, the anode of D1 is connected with the power supply VCC through a resistor R1, the cathode of D1 is connected with the emitter of Q1 through a resistor R1, the anode of D1 is connected with the power supply VCC through a resistor R1, the cathode of D1 is connected with the emitter of Q1, the collector of Q1 is grounded, and the base of Q1 is connected with a pin No. 20 of U1 through a resistor R1.

As a preferable scheme: the main control module is a single chip microcomputer module, and the model of a single chip microcomputer chip U1 is STC15W408 AS.

Compared with the prior art, the utility model has the advantages that: this response warning circuit adopts the action that the trigger device and the response device of separation are used for detecting the forced induction valve, and the response is sensitive reliable, when detecting the forced induction valve and producing the action, triggers alarm on the spot and sends alarm signal, can also in time send unusual alarm information to monitoring platform, finally can realize the function to the long-range propelling movement alarm information of householder, realizes the remote monitoring warning, has improved the security of using the gas greatly.

Drawings

FIG. 1 is a schematic diagram of a circuit in this embodiment;

FIG. 2 is a circuit diagram of a master control module and a communication module;

FIG. 3 is a circuit diagram of the sensing circuit and the buzzer driving circuit;

FIG. 4 is a circuit diagram of a power module and a status indication module.

Detailed Description

Referring to fig. 1, the induction alarm circuit comprises a trigger device, a main control module, an induction circuit, a key module, a buzzer driving module, a state indication circuit, a WIFI communication module and a power module.

The sensing circuit comprises a sensing device, signals output by the sensing circuit change along with the change of the relative position of the trigger device and the sensing device, the output end of the sensing circuit is connected with an I/O port of the main control module, the key module is connected with the I/O port of the main control module, the WIFI communication module is connected with a data port of the main control module, the state indicating circuit is connected with the I/O port of the main control module, and the power supply module is connected with the main control module and each circuit module and used for supplying power.

Referring to fig. 2, the main control module in this embodiment is a single chip microcomputer module, a model of a single chip microcomputer chip U1 is STC15W408AS, a pin 10 of U1 is grounded, and a pin 13 of U1 is grounded through a resistor R16.

Referring to fig. 3, the sensing circuit in this embodiment includes a hall sensor H1, which is AH3144, and the hall sensor is used as a sensing device, and the corresponding trigger device is a magnet. The base of H1 is connected with power VCC through resistor R1, the emitter of H1 is grounded, the collector of H1 is grounded through capacitor C1, resistor R2 is connected between the base and collector of H1, and the collector of H1 is connected with pin No. 13 of U1 through resistor R3. The sensing circuit further comprises an LED indicator lamp D1, the anode of the D1 is connected with a power supply VCC through a resistor R4, and the cathode of the D1 is connected with the No. 13 pin of the U1. An LED indicator D1 may be mounted on the valve body of the pressure sensing valve.

The buzzer driving circuit comprises an NPN type triode Q1 and a buzzer J9, wherein the positive electrode of J9 is connected with a power supply VCC through a resistor R5, the negative electrode of J9 is connected with the emitter of Q1, the base electrode of Q1 is connected with pin 19 of U1 through a resistor R6, and the collector of Q1 is grounded.

The terminal X2 is 5P-2.54MM in size and is used for wiring between circuit modules.

Referring to fig. 4, the power module is a three-terminal voltage stabilizing circuit, and includes a voltage stabilizing chip U3, the model number of U3 is HT7533-SOT223, pin 1 of U3 is grounded, pin 2 of U3 is output power VCC, pin 2 of U3 is grounded through a capacitor C9, a capacitor C3 is connected between pin 1 and pin 2 of U3, pin 3 of U3 is grounded through a capacitor C7, and pin 3 of U3 is connected to a power supply VDD.

The WIFI communication module includes WIFI chip U2, U2's model is TYMR3, power VCC is connected to U2's No. 8 pins, U2's No. 8 pins pass through electric capacity C2 ground connection, U2's No. 9 pins ground connection, U2's No. 15 pins pass through resistance R15 and U1's No. 18 pins and are connected, U2's No. 16 pins pass through resistance R14 and U1's No. 17 pins and are connected.

The state indicating circuit comprises an NPN type triode Q2, an LED indicator lamp D2, an LED indicator lamp D3, an LED indicator lamp D4, an LED indicator lamp D5, an LED indicator lamp D6 and an LED indicator lamp D7, wherein the anode of D2 is connected with a power supply VCC through a resistor R8, the cathode of D2 is connected with a pin No. 1 of U1, the anode of D3 is connected with the power supply VCC through a resistor R9, the cathode of D3 is connected with a pin No. 15 of U1, the anode of D4 is connected with the power supply VCC through a resistor R10, the cathode of D4 is connected with the emitter of Q2, the anode of D5 is connected with the power supply VCC through a resistor R11, the cathode of D5 is connected with the emitter of Q2, the anode of D6 is connected with the power supply VCC through a resistor R12, the emitter of D6 is connected with the emitter of Q2, the anode of D7 is connected with the power supply VCC through a resistor R13, the cathode of D7 is connected with the emitter of Q7, and the collector of Q7 is connected with the collector 7, and the collector.

The LED pilot lamp D2 is defined as WIFI and joins in marriage net pilot lamp, and LED pilot lamp D4, LED pilot lamp D5, LED pilot lamp D6 and LED pilot lamp D7 are defined as alarm indicator, through setting up multiunit alarm indicator, can improve alarm lamp luminance to play better warning effect.

The key module is connected with the No. 14 pin of the U1.

Before the alarm circuit operates, a magnet used as a trigger device needs to be fixed on a trigger rod, a Hall sensor is arranged around the trigger rod, and the magnet penetrates through the inner side of the Hall sensor along the moving path of the trigger rod. The WIFI communication module is accessed to a WIFI network, the WIFI distribution network indicator light LED4 can enter a flickering state when the SW1 key is pressed for more than 5 seconds, and the WIFI module can be subjected to distribution network operation through a mobile phone.

The working principle of the induction alarm circuit is as follows: in an initial state, a signal output end SIG of the Hall sensor H1 outputs a 3.3V high level signal, at the moment, the state indicator lamp D1 is in an off state, the high level signal is output to the single chip microcomputer chip U1, a pin 19 of the single chip microcomputer chip U1 outputs a 0V low level signal, the triode Q1 is in an off state, and the buzzer driving circuit does not act.

When the trigger lever moves up and down, when the magnet penetrates into or penetrates out of the inner side of the Hall sensor H1, the signal output end SIG of the Hall sensor H1 outputs a 0V low level signal, the state indicator lamp D1 is lightened at the moment, the low level signal is output to the single chip microcomputer chip U1, after the single chip microcomputer chip U1 receives the low level signal, the pin 19 outputs a high level signal, the triode Q1 is conducted at the moment, the buzzer is electrified and begins to buzz, the pressure induction valve of a user is reminded of acting, and abnormal conditions occur. Meanwhile, pin 20 of U1 outputs a high level signal, and at this time, transistor Q2 is turned on, and alarm indicator lamps D4, D5, D6, and D7 are lit.

When the abnormal condition appears, singlechip chip U1 generates unusual alarm information, uploads unusual alarm information to the monitoring platform through WIFI communication module, again by monitoring platform owner's cell-phone propelling movement unusual alarm information mutually, the prison can in time learn the abnormal condition through the monitoring platform.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a response alarm circuit, includes host system, response module, button module, alarm module, status indication module, communication module and power module, characterized by: the induction module comprises a trigger device and an induction circuit, the induction circuit comprises an induction device, signals output by the induction circuit change along with the change of the relative position of the trigger device and the induction device, the output end of the induction circuit is connected with the I/O port of the main control module, the key module is connected with the I/O port of the main control module, the communication module is connected with the data port of the main control module, the state indication module is connected with the I/O port of the main control module, and the main control module receives the starting signals sent by the alarm module when the output signals of the induction circuit change and sends alarm information outwards.

2. The inductive alarm circuit of claim 1, wherein: the sensing circuit comprises a Hall sensor H1, the model number of the Hall sensor is AH3144, the Hall sensor is used as a sensing device, a corresponding trigger device is a movable magnet, the base electrode of H1 is connected with a power supply VCC through a resistor R1, the emitter electrode of H1 is grounded, the collector electrode of H1 is grounded through a capacitor C1, a resistor R2 is connected between the base electrode of H1 and the collector electrode, and the collector electrode of H1 is connected with an I/O port of the main control module through a resistor R3.

3. The inductive alarm circuit of claim 2, wherein: the sensing circuit further comprises an LED indicator lamp D1, the anode of the D1 is connected with a power supply VCC through a resistor R4, and the cathode of the D1 is connected with an I/O port of the main control module.

4. The inductive alarm circuit of claim 1, wherein: the buzzer driving circuit comprises an NPN type triode Q1 and a buzzer J9, the positive electrode of J9 is connected with a power supply VCC through a resistor R5, the negative electrode of J9 is connected with the emitter of Q1, the base electrode of Q1 is connected with the pin 19 of U1 through a resistor R6, and the collector of Q1 is grounded.

5. The inductive alarm circuit of claim 1, wherein: the power module is three-terminal voltage stabilizing circuit, it includes voltage stabilizing chip U3, U3's model is HT7533-SOT223, U3's No. 1 pin ground connection, U3's No. 2 output power VCC, U3's No. 2 pin passes through electric capacity C9 ground connection, be connected with electric capacity C3 between U3's No. 1 pin and No. 2 pin, U3's No. 3 pin passes through electric capacity C7 ground connection, and U3's No. 3 pin connection power VDD.

6. The inductive alarm circuit of claim 1, wherein: the communication module is a WIFI communication module.

7. The inductive alarm circuit of claim 6, wherein: WIFI communication module includes WIFI chip U2, and U2's model is TYMR3, and power VCC is connected to U2's No. 8 pins, and U2's No. 8 pins pass through electric capacity C2 ground connection, and U2's No. 9 pins ground connection, and U2's No. 15 pins pass through resistance R15 and are connected with host system data transmission pin, and U2's No. 16 pins pass through resistance R14 and are connected with host system's data reception pin.

8. The inductive alarm circuit of claim 1, wherein: the state indicating module comprises an NPN type triode Q2, an LED indicator lamp D2, an LED indicator lamp D4, an LED indicator lamp D5, an LED indicator lamp D6 and an LED indicator lamp D7, wherein the anode of D2 is connected with a power supply VCC through a resistor R8, the cathode of D2 is connected with a pin No. 1 of U1, the anode of D1 is connected with the power supply VCC through a resistor R1, the cathode of D1 is connected with the emitter of Q1 through a resistor R1, the anode of D1 is connected with the power supply VCC through a resistor R1, the cathode of D1 is connected with the emitter of Q1, the collector of Q1 is grounded, and the base of Q1 is connected with a pin No. 20 of U1 through a resistor R1.

9. The inductive alarm circuit of claim 1, wherein: the main control module is a single chip microcomputer module, and the model of a single chip microcomputer chip U1 is STC15W408 AS.