Flame Alarm Experiment (Flame Detection Sensor)

1. Course Content

Understand the principles of flame sensors, use flame sensors and buzzer modules to create a simple flame alarm experiment, and output the corresponding results to the serial assistant.

2. Course Objectives

1.Understand the principles of flame sensors

2.Drive the flame sensor

3.Drive the buzzer

4.Output results to the serial port

3. Hardware Overview

3.1 STM32 Overview

Refer to the “STM32F4 Series Chinese Reference Manual” provided by the simulation system.

3.2 Overview of Flame Sensors

Refer to the documentation provided by the simulation system “Flame Sensor Manual” or “Introduction to Flame Sensors“.

3.3 Overview of Buzzers

Refer to the documentation provided by the simulation system “Buzzer Manual“.

4. Hardware Design

The hardware resources involved in this course and the corresponding pin connections are shown in the diagram below1.

Figure1-Simulation Experiment Hardware Connection Circuit Diagram

	BuzzerIO	FlameDO
STM32F407IG	PH7	PA1

Table1-Simulation Experiment Pin Connection Relationship Table

5. Software Design

1．Initialize the flame sensor

2．Initialize the buzzer

3．Initialize serial port1

4．Implement alarm logic

5．Continuously check if the flame sensor is triggered

6．Output flame detection results to the serial port

/**  ******************************************************************************  * @ Name  Flame Alarm Experiment  * @ Version  STD Library V3.5.0  * @ Description  Suitable for embedded virtual simulation platform  *         Run simulation, open serial port, serial assistant outputs flame monitoring information, buzzer alarms when fire is detected.  *         Flame:DO——>PA1  *         BEEP: IO——>PH7  * @ Note  This program is for learning purposes only  ******************************************************************************  */  #include "sys.h"#include "delay.h"#include "stm32f4xx.h"#include "stm32f4xx_conf.h"#include "usart.h"#include "beep.h"#include "flame.h"int main(void){  Flame_Init();           //Initialize flame sensor  Beep_Init();            //Initialize buzzer  uart_init(115200);  while (1)  {    Flame();  }}

6. Simulation

Refer to the platform user manual to set up the flame alarm experiment environment on the simulation platform and conduct the simulation experiment.

7. Experimental Phenomena

Compile the program to run the simulation, simulate triggering the flame. Observe the action of the buzzer on the simulation experiment platform, as well as the flame information output by the serial assistant.

Figure2-Simulation Experiment Phenomena

Simulation website address:https://app.puliedu.com/#/

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