Arduino Powered CPR Feedback Device

1/*
2CPR feedback Test sketch
3-Using LCD to display results in real  time
4 */
5
6#include <LiquidCrystal.h>
7
8int pressurePin = 0; //pressure  reading pin
9int pressureRead; //for reading pressure pin
10const int buttonPin  = 8;  // pin for CPR count
11unsigned long time; //to display time for compressions
12const  int pressGood = 10;
13const int pressBad =  9;
14
15int BPM; //final output calculated  beats per min
16float bpmCount; // to calculate BPM
17float cprCount = 0;   //  counter for the number of button presses, changed from int, changed from float
18int  buttonState = 0;         // current state of the button
19int lastButtonState =  0;     // previous state of the button
20int cprTotal = 0; //total of the 5 stored  values
21int cprCycle = 0; //keeps track of CPR cycle
22
23int  timeSec, timeCPR,  BPM_1; //calculating cpr time
24float totalTime;
25unsigned long timeBegin, timeEnd;
26
27LiquidCrystal  lcd(12, 11, 5, 4, 3, 2); //LCD pins
28
29void setup() {
30 
31  pinMode(buttonPin,  INPUT); //CPR button
32  pinMode(pressGood, OUTPUT); //for good release, led on  Green
33  pinMode(pressBad, OUTPUT); // for bad release, led on Red
34  Serial.begin(9600);  // start serial communication / uncomment to debug
35  Serial.println("Begin CPR");
36  lcd.begin(16, 2); //start LCD
37  lcd.home();
38  lcd.print("Begin CPR");
39}
40
41void  loop() {
42pressureRead = analogRead(pressurePin);
43  time = millis(); //start  time
44  buttonState = digitalRead(buttonPin);
45  if (buttonState != lastButtonState)  {
46       
47    if (buttonState == HIGH) { //depth of at least 2in per AHA guidelines
48      lcd.clear();
49      lcd.home();
50      cprCount++; //add 1 to the running  total
51      Serial.println(cprCount);
52      lcd.setCursor(0,0);
53      lcd.print("Count:  ");
54      lcd.setCursor(7,0);
55      lcd.print(cprCount);
56      lcd.setCursor(10,0);
57      lcd.print("R: ");     //rate BPM
58      
59      if(cprCount == 1){
60         timeBegin = millis(); //beginning time
61      }
62      
63      }
64     
65    }
66    //pressureRead = analogRead(pressurePin);
67    if (pressureRead  < 500){
68        digitalWrite(pressGood, HIGH);
69        digitalWrite(pressBad,  LOW);
70    }
71    else if (pressureRead > 501){
72        digitalWrite(pressBad,  HIGH);
73        digitalWrite(pressGood, LOW);
74    }
75
76
77
78     if  (cprCount == 30){ // 30:2 ratio for CPR, 30 total
79            cprCount = 0; //restart  count
80            timeEnd = millis(); //capture end time for set
81            //Serial.println(timeEnd);
82            totalTime = (timeEnd - timeBegin) / 1000; //convert Ms to seconds
83            Serial.print("Total Time: ");
84            Serial.println(totalTime);
85            bpmCount = ( 30.0 / totalTime); //bpmCount = float
86            Serial.print("BPM  Count: ");
87            Serial.println(bpmCount);
88            BPM = (bpmCount  * 60.0);
89            Serial.print("Total time in sec: ");
90            Serial.println(totalTime);
91            lcd.home();
92            lcd.print("Rate (BPM): ");
93            lcd.setCursor(12,0);
94            lcd.print(BPM);
95            Serial.print("BPM is: ");
96            Serial.println(BPM);
97            lcd.setCursor(0,1);
98            lcd.print("Total Time: ");
99            lcd.setCursor(12,1);
100            lcd.print(totalTime);
101            cprCycle++;
102            Serial.print("CPR Cycle #: ");
103            Serial.println(cprCycle);
104            if (cprCycle == 5){
105                cprCycle = 0;
106            }
107            
108     }
109     
110     if (cprCount > 5 && cprCount <= 30) {
111         float rateTime = (millis() - timeBegin) / 1000; //changed int rateTime  to unsigned long
112         //Serial.println(rateTime);
113         int rate =  (cprCount / rateTime) * 60; //changed int to unsigned int
114         //Serial.print("BPM  is: ");
115         //Serial.println(rate);
116         
117         if (rate >=  100 && rate <= 120 ){ //AHA guidelines 100-120 CPM
118             lcd.setCursor(12,0);
119             lcd.print("Good");
120         }
121         else {
122             lcd.setCursor(12,0);
123             lcd.print("----");
124         }
125     }
126
127     
128    //  Delay
129    delay(25); //changed from 50
130  lastButtonState = buttonState;
131}
132
133
134

1/*
2CPR feedback Test sketch
3-Using LCD to display results in real
4  time
5 */
6
7#include <LiquidCrystal.h>
8
9int pressurePin = 0; //pressure
10  reading pin
11int pressureRead; //for reading pressure pin
12const int buttonPin
13  = 8;  // pin for CPR count
14unsigned long time; //to display time for compressions
15const
16  int pressGood = 10;
17const int pressBad =  9;
18
19int BPM; //final output calculated
20  beats per min
21float bpmCount; // to calculate BPM
22float cprCount = 0;   //
23  counter for the number of button presses, changed from int, changed from float
24int
25  buttonState = 0;         // current state of the button
26int lastButtonState =
27  0;     // previous state of the button
28int cprTotal = 0; //total of the 5 stored
29  values
30int cprCycle = 0; //keeps track of CPR cycle
31
32int  timeSec, timeCPR,
33  BPM_1; //calculating cpr time
34float totalTime;
35unsigned long timeBegin, timeEnd;
36
37LiquidCrystal
38  lcd(12, 11, 5, 4, 3, 2); //LCD pins
39
40void setup() {
41 
42  pinMode(buttonPin,
43  INPUT); //CPR button
44  pinMode(pressGood, OUTPUT); //for good release, led on
45  Green
46  pinMode(pressBad, OUTPUT); // for bad release, led on Red
47  Serial.begin(9600);
48  // start serial communication / uncomment to debug
49  Serial.println("Begin CPR");
50
51  lcd.begin(16, 2); //start LCD
52  lcd.home();
53  lcd.print("Begin CPR");
54}
55
56void
57  loop() {
58pressureRead = analogRead(pressurePin);
59  time = millis(); //start
60  time
61  buttonState = digitalRead(buttonPin);
62  if (buttonState != lastButtonState)
63  {
64       
65    if (buttonState == HIGH) { //depth of at least 2in per AHA guidelines
66
67      lcd.clear();
68      lcd.home();
69      cprCount++; //add 1 to the running
70  total
71      Serial.println(cprCount);
72      lcd.setCursor(0,0);
73      lcd.print("Count:
74  ");
75      lcd.setCursor(7,0);
76      lcd.print(cprCount);
77      lcd.setCursor(10,0);
78
79      lcd.print("R: ");     //rate BPM
80      
81      if(cprCount == 1){
82
83         timeBegin = millis(); //beginning time
84      }
85      
86      }
87
88     
89    }
90    //pressureRead = analogRead(pressurePin);
91    if (pressureRead
92  < 500){
93        digitalWrite(pressGood, HIGH);
94        digitalWrite(pressBad,
95  LOW);
96    }
97    else if (pressureRead > 501){
98        digitalWrite(pressBad,
99  HIGH);
100        digitalWrite(pressGood, LOW);
101    }
102
103
104
105     if
106  (cprCount == 30){ // 30:2 ratio for CPR, 30 total
107            cprCount = 0; //restart
108  count
109            timeEnd = millis(); //capture end time for set
110            //Serial.println(timeEnd);
111
112            totalTime = (timeEnd - timeBegin) / 1000; //convert Ms to seconds
113
114            Serial.print("Total Time: ");
115            Serial.println(totalTime);
116
117            bpmCount = ( 30.0 / totalTime); //bpmCount = float
118            Serial.print("BPM
119  Count: ");
120            Serial.println(bpmCount);
121            BPM = (bpmCount
122  * 60.0);
123            Serial.print("Total time in sec: ");
124            Serial.println(totalTime);
125
126            lcd.home();
127            lcd.print("Rate (BPM): ");
128            lcd.setCursor(12,0);
129
130            lcd.print(BPM);
131            Serial.print("BPM is: ");
132            Serial.println(BPM);
133
134            lcd.setCursor(0,1);
135            lcd.print("Total Time: ");
136
137            lcd.setCursor(12,1);
138            lcd.print(totalTime);
139            cprCycle++;
140
141            Serial.print("CPR Cycle #: ");
142            Serial.println(cprCycle);
143
144            if (cprCycle == 5){
145                cprCycle = 0;
146            }
147
148            
149     }
150     
151     if (cprCount > 5 && cprCount <= 30) {
152
153         float rateTime = (millis() - timeBegin) / 1000; //changed int rateTime
154  to unsigned long
155         //Serial.println(rateTime);
156         int rate =
157  (cprCount / rateTime) * 60; //changed int to unsigned int
158         //Serial.print("BPM
159  is: ");
160         //Serial.println(rate);
161         
162         if (rate >=
163  100 && rate <= 120 ){ //AHA guidelines 100-120 CPM
164             lcd.setCursor(12,0);
165
166             lcd.print("Good");
167         }
168         else {
169             lcd.setCursor(12,0);
170
171             lcd.print("----");
172         }
173     }
174
175     
176    //
177  Delay
178    delay(25); //changed from 50
179  lastButtonState = buttonState;
180}
181
182
183