描述

問題陳述

有聽力障礙的人或忙碌的家庭主婦有時無法跟蹤壓力鍋吹了多少次口哨。這種基于 Arduino 的設備將幫助他們克服這個問題。

項目描述

這是一個基于 Arduino 的項目，旨在幫助聽力障礙者或家庭主婦跟蹤壓力鍋的哨聲。每當廚師不在時，該設備將使用聲音傳感器記錄壓力鍋發(fā)出哨聲的次數。并且只要該號碼與預定義的號碼匹配，該設備就會開始發(fā)出嗶嗶聲，從而提醒用戶。

硬件零件清單：

（可以從任何當地的電子商店購買）

• Arduino UNO 開發(fā)板

• Arduino聲音傳感器模塊

• 壓電蜂鳴器

• 男女跳線

• 7段顯示模塊

• 按鈕開關（推上、推下）

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7段顯示和聲音傳感器模塊

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壓電蜂鳴器

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工作原則

首先，用戶必須通過連接到設備的按鈕為壓力鍋預設所需的計數器（例如 2、4、5...最多 9 個）。現在設備將把任何沉重的聲音視為輸入并開始增加其內部計數器。每當壓力鍋發(fā)出哨聲時，計數器就會增加。如果它與預設數字匹配（我們在使用按鈕開關之前設置），蜂鳴器將被觸發(fā)并提醒用戶已達到所需的計數。

Arduino代碼

 //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();
}
}