CN208077375U - A kind of smoke alarm - Google Patents

Abstract

The utility model discloses a smoke alarm, which comprises a DC power supply, a smoke detection circuit and an alarm drive circuit. The composition of the smoke detection circuit includes a smoke sensor, LED1, LED2 and LED3 of three different colors, and three corresponding resistors. R1, R2 and R3, and a rotary potentiometer, the composition of the alarm driving circuit includes a buzzer and five different colors of LED1, LED2, LED3, LED4 and LED5, and the LED4 and LED5 are correspondingly connected with R4 and R5, the positive pole of the DC power supply is connected to the positive pole of the circuit, the negative pole of the DC power supply is connected to the circuit ground GND, and the R1, R2, R3, R4 and R5 are all connected to the negative pole. The utility model has both practicability and interest, creates a good smoke-free home and public environment while protecting human health, can promote the establishment of a smoke-free society, implement the smoking ban, has certain social significance, and satisfies the actual situation. Requirements.

Description

a smoke alarm

technical field

The utility model relates to a smoke alarm, which belongs to the technical field of electronics and smoke detection and alarm.

Background technique

Smoke alarms, also known as fire smoke alarms, smoke sensors, smoke sensors, etc. There are two main types, one is an independent product, powered by batteries or AC power, it can give out sound and light prompts when alarming, we call it an independent smoke alarm; the other is connected and powered by the bus, the bus There can be multiple connections on the Internet, and the fire alarm monitor is networked and communicated to form an alarm system. There is no sound at the scene when the alarm is triggered, and there is an acousto-optic prompt on the host side. Generally, this type of smoke alarm is called a smoke detector, and a smoke detector The device is available with address coding or without address coding. In contemporary society, people are facing more and more environmental health and safety issues. The public is paying more and more attention to health issues, and is becoming more serious about smoking. Therefore, it is imminent to design a smoke alarm that can be replaced and adapted to the scene according to user needs.

Contents of the invention

The utility model aims at the deficiencies of the prior art, and provides a smoke alarm, which is both practical and interesting, and creates a good smoke-free home and public environment while protecting human health. , can promote the establishment of a smoke-free society and implement the smoking ban, which has certain social significance and meets the actual use requirements.

In order to solve the above problems, the technical scheme adopted by the utility model is as follows:

A smoke alarm comprising a DC power supply, a smoke detection circuit and an alarm drive circuit, the smoke detection circuit comprising a smoke sensor, three LED1, LED2 and LED3 of different colors, and three corresponding resistors R1, R2 and R3 , and a rotary potentiometer, the composition of the alarm drive circuit includes a buzzer and five different colors of LED1, LED2, LED3, LED4 and LED5, the LED4 and LED5 are connected with R4 and R5 correspondingly, the DC The positive pole of the power supply is connected to the positive pole of the circuit, the negative pole of the DC power supply is connected to the ground GND of the circuit, and the R1, R2, R3, R4 and R5 are all connected to the negative pole.

As an improvement of the above technical solution, the smoke alarm also includes a main board, and the main board is provided with digital analog pins and digital output pins, and the digital analog pins include A0, A1, A2, A3, A4 and A5 , the digital output pins include D1, D2, D3, D4, D4, D6, D7, D8, D9, D10, D11, D12 and D13, and the five different colors of LED1, LED2, LED3, LED4 and LED5 Respectively represent green, yellow, green, yellow, green effect.

As an improvement of the above technical solution, the digital analog pin A1 is used to read the data of the smoke sensor, and the digital analog pin A0 is used to read the data of the potentiometer.

As an improvement of the above-mentioned technical scheme, the LED1, LED2, LED3, LED4 and LED5 of five different colors are respectively connected to the digital analog pin 13, the digital analog pin 12, the digital analog pin 11, and the digital analog pin 10. And the digital analog pin 9 forms the water lamp effect, the digital output pin 9 is used to control the green LED1 in the water lamp, the digital output pin 10 is used to control the yellow LED2 in the water lamp, and the digital output pin 11 It is used to control the green LED3 in the water lamp, the digital output pin 12 is used to control the yellow LED4 of the water lamp, and the digital output pin 13 is used to control the green LED5 in the water lamp.

As an improvement of the above technical solution, the smoke alarm also includes a green LED8 representing a public scene, a blue LED7 representing a home scene, and a red LED6 representing a baby room scene, and the LED6, LED7, and LED8 are respectively connected with resistors R6, R7, R8, the resistors R6, R7, R8 are all connected to the negative pole, and the digital output pin 5 is used to control the green LED8 of the public scene of the meter, and the digital output pin 6 is used to control the representative home scene The blue LED7, the digital output pin 7 is used to control the red LED6 representing the baby room scene.

As an improvement of the above technical solution, the signal interface of the smoke sensor is connected to the digital analog interface A1, and the two pins of the buzzer are respectively connected to the digital output pin 2 and the negative pole.

The DC power supply described in the utility model is a 9V DC power supply, and the main board described in the utility model is an Arduino main board.

The utility model compares with prior art, and the implementation effect of the utility model is as follows:

(1) This utility model adopts smoke concentration detection, water lamp and buzzer alarm, and uses potentiometer and three LEDs of different colors to provide three scenarios and their responses for different needs of users. Rotate the operation to switch the digital pin mode of different color LED connection, so as to achieve this effect.

(2) The utility model uses eight LEDs in three different colors and a buzzer to realize the effect of smoke alarm. The buzzer works alone and switches the digital pin mode connected to the LED to achieve this effect.

(3) The utility model adopts simple data calculation, and LCD display screen and other parts can be added according to user needs; the utility model does not save any data, and does not connect any remote equipment through the network.

Note: This utility model is both practical and interesting. It creates a good smoke-free home and public environment while protecting human health. It can promote the establishment of a smoke-free society and implement the smoking ban. It has certain social significance. Meet the actual use requirements.

Description of drawings

Fig. 1 is a schematic diagram of the circuit structure of the smoke alarm described in the utility model.

Detailed ways

The content of the present utility model will be described below in conjunction with specific embodiments.

As shown in FIG. 1 , it is a structural schematic diagram of the smoke alarm described in the present invention.

The utility model is a smoke detection alarm based on a smoke sensor, which includes: a 9V direct current power supply, a smoke detection circuit, and an alarm drive circuit.

(1) The smoke detection circuit is composed of a smoke sensor, three LEDs of different colors, resistors R1, R2, R3, and a rotary potentiometer RP; the digital analog pin A1 is used to read the data of the smoke sensor, and the digital output pin 5 is used to control the green LED representing the public scene in the LED display lamp, the digital output pin 6 is used to control the blue LED representing the home scene in the LED display lamp, and the digital output pin 7 is used to control the baby room in the LED display lamp The red LED of the scene, the digital analog pin A0 is used to read the potentiometer data.

(2) The alarm driving circuit is composed of a buzzer and 5 LEDs of different colors. The 5 LEDs adopt green, yellow, green, yellow, and green effects respectively. Digital output pin 9 forms a water light effect (five LEDs of different colors) Digital output pin 9 is used to control green LED No. 1 in the water light, and digital output pin 10 is used to control yellow LED No. 2 in the water light , the digital output pin 11 is used to control the No. 3 green LED in the water lamp, the digital output pin 12 is used to control the No. 4 yellow LED in the water lamp, and the digital output pin 13 is used to control the No. 5 green LED in the water lamp LED).

(3) The positive pole of the 9V DC power supply is connected to the positive pole of the circuit, and the negative pole of the 9V DC power supply is connected to the circuit ground GND.

The specific implementation plan, the detailed steps are as follows:

(1) As shown in Figure 1, connect the signal interface (S) of the smoke sensor to the digital analog interface A1, connect the 9V DC power supply to the positive pole, and GND to the negative pole;

(2) LED6, LED7, and LED8 representing gear positions are respectively connected to a resistor, which is R6, R7, and R8, a total of three resistors, and each resistor is connected to the negative pole;

(3) D5-D7 of Arduino are connected to LED8, LED7, LED6 respectively;

(4) Connect a potentiometer across the right side of the above three LEDs;

(5) One side of the potentiometer is connected to the digital analog interface A0, and the other side is connected to the positive and negative poles respectively;

(6) LED1, LED2, LED3, LED4, and LED5 in the running water lamp are respectively connected to a resistor, which is R1, R2, R3, R4, and R5, a total of five resistors, and each resistor is connected to the negative pole;

(7) D9-D13 of Arduino are respectively connected to the above five LEDs;

(8) The two pins of the buzzer in the product are respectively connected to the digital interface 2 and the negative pole.

Note 1: The main advantage of this utility model is that the scene can be customized and selected, and it becomes an independent scene smoke detection and reminder device, aiming to remind smokers and passive smokers.

The smoke alarm in the utility model adapts to the following three scenarios according to user needs:

1) Scenes with strict requirements on smoke such as baby room/ward;

2) Scenes with slight requirements for smoke, such as home/work place;

3) Various public places and scenes with a certain tolerance to smoke.

In each scene, it reacts in two different ways depending on the smoke level:

1) When the smoke concentration is low, the buzzer sounds with music 1, and the water lamp flashes back and forth;

2) When the smoke concentration is high, the buzzer sounds with music 2, and the running water light flashes back and forth.

In the design of the utility model, devices such as LCD expansion boards or bluetooth can also be used to achieve the effect of real-time transmission of information to users.

Note 2: This utility model needs to use a rotary potentiometer, smoke sensor, LED, resistor, and buzzer. The LED is divided into two groups, and the resistor acts as a current limiter for the LED.

The utility model designs two functional circuits: smoke concentration detection, running water lamp and buzzer alarm. Use the potentiometer and three LEDs of different colors to provide three scenarios and their responses for the different needs of the user. By rotating the potentiometer to switch the digital pin mode connected to the LEDs of different colors, this is achieved. One effect.

The utility model uses a total of eight LEDs of three different colors and a buzzer to realize the effect of smoke alarm, and the buzzer works alone to switch the digital pin mode connected to the LED to achieve this effect.

The utility model requires simple data calculation, and LCD display screens and other parts can be added according to user needs; no data is saved in this project, and any remote device is not connected through the network.

Wherein, in the development process of the utility model, the serial port monitor is used to observe the reading data of the potentiometer, the reading data of the smoke sensor, and the working state of the LED display lamp, but it is not required in the actual product.

The above content is a detailed description of the utility model in conjunction with specific embodiments, and it cannot be determined that the specific implementation of the utility model is limited to these descriptions. For those skilled in the technical field to which the utility model belongs, on the premise of not departing from the concept of the utility model, some simple deduction or replacement can also be made, which should be regarded as belonging to the scope of protection of the utility model.

Claims (6)

1. A kind of smoke alarm, it is characterized in that: comprise DC power supply, smoke detection circuit and alarm drive circuit, the composition of described smoke detection circuit comprises smoke sensor, LED1, LED2 and LED3 of three different colors, three corresponding Resistors R1, R2 and R3, and a rotary potentiometer, the composition of the alarm drive circuit includes a buzzer and five different colors of LED1, LED2, LED3, LED4 and LED5, and the LED4 and LED5 are correspondingly connected to R4 and R5, the positive pole of the DC power supply is connected to the positive pole of the circuit, the negative pole of the DC power supply is connected to the circuit ground GND, and the R1, R2, R3, R4 and R5 are all connected to the negative pole. 2. A smoke alarm according to claim 1, characterized in that: said smoke alarm also includes a main board, said main board is provided with digital analog pins and digital output pins, said digital analog pins include A0, A1, A2, A3, A4 and A5, the digital output pins include D1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11, D12 and D13, the five different Color LED1, LED2, LED3, LED4 and LED5 represent green, yellow, green, yellow and green effects respectively. 3. A smoke alarm according to claim 2, characterized in that: the digital analog pin A1 is used to read smoke sensor data, and the digital analog pin A0 is used to read potentiometer data. 4. A smoke alarm according to claim 2, characterized in that: LED1, LED2, LED3, LED4 and LED5 of five different colors are respectively connected to digital analog pin 13, digital analog pin 12, The digital analog pin 11, the digital analog pin 10 and the digital analog pin 9 form a water lamp effect, the digital output pin 9 is used to control the green LED1 in the water lamp, and the digital output pin 10 is used to control the water lamp Medium yellow LED2, the digital output pin 11 is used to control the green LED3 in the water lamp, the digital output pin 12 is used to control the yellow LED4 of the water lamp, and the digital output pin 13 is used to control the green LED5 in the water lamp . 5. A smoke alarm according to claim 2, characterized in that: the smoke alarm also includes a green LED8 representing a public scene, a blue LED7 representing a home scene, and a red LED6 representing a baby room scene, and the The LED6, LED7, and LED8 are connected with resistors R6, R7, and R8 respectively, and the resistors R6, R7, and R8 are all connected to the negative pole, and the digital output pin 5 is used to control the green LED8 of the public scene of the table. The digital output pin 6 is used to control the blue LED 7 representing the home scene, and the digital output pin 7 is used to control the red LED 6 representing the baby room scene. 6. A smoke alarm according to claim 1, characterized in that: the signal interface of the smoke sensor is connected to the digital analog pin A1, and the two pins of the buzzer are respectively connected to the digital output pin 2 and negative.