基于Arduino的压力锅哨声指示器

描述

问题陈述

有听力障碍的人或忙碌的家庭主妇有时无法跟踪压力锅吹了多少次口哨。这种基于 Arduino 的设备将帮助他们克服这个问题。

项目描述

这是一个基于 Arduino 的项目，旨在帮助听力障碍者或家庭主妇跟踪压力锅的哨声。每当厨师不在时，该设备将使用声音传感器记录压力锅发出哨声的次数。并且只要该号码与预定义的号码匹配，该设备就会开始发出哔哔声，从而提醒用户。

硬件零件清单：

（可以从任何当地的电子商店购买）

• Arduino UNO 开发板

• Arduino声音传感器模块

• 压电蜂鸣器

• 男女跳线

• 7段显示模块

• 按钮开关（推上、推下）

 

7段显示和声音传感器模块

 

 

压电蜂鸣器

 

工作原则

首先，用户必须通过连接到设备的按钮为压力锅预设所需的计数器（例如 2、4、5...最多 9 个）。现在设备将把任何沉重的声音视为输入并开始增加其内部计数器。每当压力锅发出哨声时，计数器就会增加。如果它与预设数字匹配（我们在使用按钮开关之前设置），蜂鸣器将被触发并提醒用户已达到所需的计数。

Arduino代码

 //product Designed by Sourav Paul 
 //Date last updated on 05/06/18 , 07:09 AM
const int buttonPin = 13;     // the number of the pushbutton pin
const int buttonPowerPin =  2;      // the number of the LED pin
const int soundPin = 3; // the number of the sound sensor pin
int counter = 1; // set initial counter to value 1
const int buzzerPin = A1; // the number of buzzer pin
int whistle = 0; // initial whistle value to zero.
int buttonState = 0;         // current state of the button
int lastButtonState = 0;     // previous state of the button
int whistlestate = 0;
int lastwhistlestate = 0;     // previous state of the whistle
volatile int state = LOW;
boolean Counterflag = true;
unsigned long start, finished, elapsed;
//declare variables for 7 segment display
int seg_a = 11; // declare the variables
int seg_b = 10;
int seg_c = 9;
int seg_d = 8;
int seg_e = 7;
int seg_f = 6;
int seg_g = 5;
int seg_dp = 4;
int com = 12;
void blink() { 
  //ISR function
  state = !state; //toggle the state when the interrupt occurs
}
void print0()
{
 digitalWrite(seg_a,HIGH);
 digitalWrite(seg_b,HIGH);
 digitalWrite(seg_c,HIGH);
 digitalWrite(seg_d,HIGH);
 digitalWrite(seg_e,HIGH);
 digitalWrite(seg_f,HIGH);
 digitalWrite(seg_g,LOW);
 digitalWrite(seg_dp,LOW);
}
void print1()
{
 digitalWrite(seg_a,LOW);
 digitalWrite(seg_b,HIGH);
 digitalWrite(seg_c,HIGH);
 digitalWrite(seg_d,LOW);
 digitalWrite(seg_e,LOW);
 digitalWrite(seg_f,LOW);
 digitalWrite(seg_g,LOW);
 digitalWrite(seg_dp,LOW);
}
void print2()
{
  digitalWrite(seg_a,HIGH);
 digitalWrite(seg_b,HIGH);
 digitalWrite(seg_c,LOW);
 digitalWrite(seg_d,HIGH);
 digitalWrite(seg_e,HIGH);
 digitalWrite(seg_f,LOW);
 digitalWrite(seg_g,HIGH);
 digitalWrite(seg_dp,LOW);
}
void print3()
{
 digitalWrite(seg_a,HIGH);
 digitalWrite(seg_b,HIGH);
 digitalWrite(seg_c,HIGH);
 digitalWrite(seg_d,HIGH);
 digitalWrite(seg_e,LOW);
 digitalWrite(seg_f,LOW);
 digitalWrite(seg_g,HIGH);
 digitalWrite(seg_dp,LOW);
}
void print4()
{
digitalWrite(seg_a,LOW);
 digitalWrite(seg_b,HIGH);
 digitalWrite(seg_c,HIGH);
 digitalWrite(seg_d,LOW);
 digitalWrite(seg_e,LOW);
 digitalWrite(seg_f,HIGH);
 digitalWrite(seg_g,HIGH);
 digitalWrite(seg_dp,LOW);
}
void print5()
{
 digitalWrite(seg_a,HIGH);
 digitalWrite(seg_b,LOW);
 digitalWrite(seg_c,HIGH);
 digitalWrite(seg_d,HIGH);
 digitalWrite(seg_e,LOW);
 digitalWrite(seg_f,HIGH);
 digitalWrite(seg_g,HIGH);
 digitalWrite(seg_dp,LOW);
}
void print6()
{
 digitalWrite(seg_a,HIGH);
 digitalWrite(seg_b,LOW);
 digitalWrite(seg_c,HIGH);
 digitalWrite(seg_d,HIGH);
 digitalWrite(seg_e,HIGH);
 digitalWrite(seg_f,HIGH);
 digitalWrite(seg_g,HIGH);
 digitalWrite(seg_dp,LOW);
}
void print7()
{
 digitalWrite(seg_a,HIGH);
 digitalWrite(seg_b,HIGH);
 digitalWrite(seg_c,HIGH);
 digitalWrite(seg_d,LOW);
 digitalWrite(seg_e,LOW);
 digitalWrite(seg_f,LOW);
 digitalWrite(seg_g,LOW);
 digitalWrite(seg_dp,LOW);
}
void print8()
{
 digitalWrite(seg_a,HIGH);
 digitalWrite(seg_b,HIGH);
 digitalWrite(seg_c,HIGH);
 digitalWrite(seg_d,HIGH);
 digitalWrite(seg_e,HIGH);
 digitalWrite(seg_f,HIGH);
 digitalWrite(seg_g,HIGH);
 digitalWrite(seg_dp,LOW);
}
void print9()
{
 digitalWrite(seg_a,HIGH);
 digitalWrite(seg_b,HIGH);
 digitalWrite(seg_c,HIGH);
 digitalWrite(seg_d,HIGH);
 digitalWrite(seg_e,LOW);
 digitalWrite(seg_f,HIGH);
 digitalWrite(seg_g,HIGH);
 digitalWrite(seg_dp,LOW);
}
void setup() {
 digitalWrite(com,LOW);
 // initialize the pushbutton pin as an input:
 pinMode(buttonPin, INPUT);
 pinMode(buttonPowerPin, OUTPUT);
 digitalWrite(buttonPowerPin, HIGH);
 Serial.begin(9600);
 pinMode(soundPin, INPUT);
 pinMode(buzzerPin, OUTPUT);
 attachInterrupt(digitalPinToInterrupt(soundPin), blink, FALLING);
 pinMode(seg_a,OUTPUT); // configure all pins used to outputs
 pinMode(seg_b,OUTPUT);
 pinMode(seg_c,OUTPUT);
 pinMode(seg_d,OUTPUT);
 pinMode(seg_e,OUTPUT);
 pinMode(seg_f,OUTPUT);
 pinMode(seg_g,OUTPUT);
 pinMode(seg_dp,OUTPUT);
 pinMode(com,OUTPUT);
}
// func to play buzzer
void playbuzzer()
{
 digitalWrite(buzzerPin, HIGH);
 }
 // detect button state change
 void buttontstateChanged()
 {
   // read the pushbutton input pin:
buttonState = digitalRead(buttonPin);
 // compare the buttonState to its previous state
 if (buttonState != lastButtonState) {
   // if the state has changed, increment the counter
   if (buttonState == HIGH) {
     // if the current state is HIGH then the button went from off to on:
     counter++;
   } else {
   }
   // Delay a little bit to avoid bouncing
   delay(50);
 }
 // save the current state as the last state, for next time through the loop
 lastButtonState = buttonState;
 }
// print counter number in 7 segment display unit
void printcounterValue()
{
 switch(counter){
   case 1:
   print1();
   break;
   case 2:
   print2();
   break;
   case 3:
   print3();
   break;
   case 4:
   print4();
   break;
   case 5:
   print5();
   break;
   case 6:
   print6();
   break;
   case 7:
   print7();
   break;
   case 8:
   print8();
   break;
   case 9:
   print9();
   break;
 }
}
// print whistle number into 7 segment display 
void printwhistleValue()
{
 switch(whistle){
   case 0:
   print0();
   break;
   case 1:
   print1();
   break;
   case 2:
   print2();
   break;
   case 3:
   print3();
   break;
   case 4:
   print4();
   break;
   case 5:
   print5();
   break;
   case 6:
   print6();
   break;
   case 7:
   print7();
   break;
   case 8:
   print8();
   break;
   case 9:
   print9();
   break;
 }
}
//func to pre-set desired counter
void setCounter()
{
 start=millis();
 while(elapsed<=50000)    // 50 seconds time is given for setting counter timer
 {
 buttontstateChanged();
 printcounterValue();
 finished=millis();
 elapsed=finished-start;
 }
  Counterflag = false;
 }
void loop() {
 //Set counter at beginning of program
 if(Counterflag == true)
 {
 setCounter();
 }
 //calling whistle detecting function
printwhistleValue();
if(state==HIGH)
{
  whistle++;
 printwhistleValue();
  delay(20000); // 20 secs minimum gap is given between two whistle sounds.
  state = LOW;                                                                                                                                                                                                                                            ;
}
//compares if whistle number is greater than equal to pre-set counter, if yes then kick off buzzer alarm.
if(whistle>=counter)
{
 playbuzzer();
}
}