Tadhg Jones
This is a circuit to measure the temperature in the vehicle from two temperature sensors.
Dependencies: mbed 4DGL-uLCD-SE
Revision 0:94443daebe4c, committed 2020-12-17
- Comitter:
- tadhgjones
- Date:
- Thu Dec 17 14:37:13 2020 +0000
- Commit message:
- Temperature Detection Circuit
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/4DGL-uLCD-SE.lib Thu Dec 17 14:37:13 2020 +0000 @@ -0,0 +1,1 @@ +https://os.mbed.com/users/sparkfun/code/4DGL-uLCD-SE/#e39a44de229a
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Thu Dec 17 14:37:13 2020 +0000
@@ -0,0 +1,143 @@
+#include "mbed.h"
+#include "uLCD_4DGL.h"
+
+
+// Analog input (pin 15)
+AnalogIn ain(p15);
+AnalogIn ain2(p16);
+
+// USB serial (tx, rx)
+Serial pc(USBTX, USBRX);
+
+// TX, RX, and RES pins
+uLCD_4DGL uLCD(p9,p10,p11);
+
+void Temperature();
+void TempConstraints();
+float getTemp();
+float avgTemp();
+float getTemp2();
+float avgTemp2();
+
+float voltage_in;
+float degrees_c;
+float avgT;
+float Temp;
+float a;
+float b;
+
+int main() {
+
+
+ // Collect temperatures with timestamps every second
+ while(1) {
+ uLCD.cls();
+ uLCD.printf("Temperature:\n\n");
+
+ Temperature();
+ wait(10);
+ }
+}
+
+void Temperature(){
+
+ a = avgTemp();
+ b = avgTemp2();
+
+ TempConstraints();
+
+ uLCD.text_width(2);
+ uLCD.text_height(2);
+ Temp = (a + b)/2;
+ pc.printf("%3.1f deg C\n\r", Temp);
+ uLCD.printf("%3.1f \t", Temp);
+ uLCD.text_width(1);
+ uLCD.text_height(1);
+ uLCD.printf("o");
+ uLCD.text_width(2);
+ uLCD.text_height(2);
+ uLCD.printf("C");
+}
+
+void TempConstraints() {
+
+ if(degrees_c <= 4){
+ pc.printf("WARNING\nCOLD TEMPERATURES\nICE MAY BE PRESENT");
+ }
+ if(abs(a-b) > 4){
+ uLCD.printf("WARNING\nTEMPERATURE SENSOR\nFAULT\n");
+ }
+}
+
+float getTemp(){
+ voltage_in = ain * 3.3;
+ degrees_c = ((voltage_in - 0.5) * 100.0);
+ return degrees_c;
+}
+
+float getTemp2(){
+ voltage_in = ain2 * 3.3;
+ degrees_c = ((voltage_in - 0.5) * 100.0);
+ return degrees_c;
+}
+
+//Thsi function obtaines the voltage from the first sensor
+float avgTemp(){
+ float a = getTemp();
+ float b = getTemp();
+ float c = getTemp();
+ float d = getTemp();
+ float e = getTemp();
+ float f = getTemp();
+ float g = getTemp();
+ float h = getTemp();
+ float i = getTemp();
+ float j = getTemp();
+ float k = getTemp();
+ float l = getTemp();
+ float m = getTemp();
+ float n = getTemp();
+ float o = getTemp();
+ float p = getTemp();
+ float q = getTemp();
+ float r = getTemp();
+ float s = getTemp();
+ float t = getTemp();
+
+ //The function is called to get 20 Values of the required voltage in order
+ //to acieve an accurate resuilt and eliminate outlier effects
+ avgT = (a+b+c+d+e+f+g+h+i+j+k+l+m+n+o+p+q+r+s+t)/20;
+
+ return avgT;
+}
+
+//this function obtaines the voltage from the second sensor
+float avgTemp2(){
+ float a = getTemp2();
+ float b = getTemp2();
+ float c = getTemp2();
+ float d = getTemp2();
+ float e = getTemp2();
+ float f = getTemp2();
+ float g = getTemp2();
+ float h = getTemp2();
+ float i = getTemp2();
+ float j = getTemp2();
+ float k = getTemp2();
+ float l = getTemp2();
+ float m = getTemp2();
+ float n = getTemp2();
+ float o = getTemp2();
+ float p = getTemp2();
+ float q = getTemp2();
+ float r = getTemp2();
+ float s = getTemp2();
+ float t = getTemp2();
+
+ avgT = (a+b+c+d+e+f+g+h+i+j+k+l+m+n+o+p+q+r+s+t)/20;
+
+ return avgT;
+}
+
+
+
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Thu Dec 17 14:37:13 2020 +0000 @@ -0,0 +1,1 @@ +https://os.mbed.com/users/mbed_official/code/mbed/builds/65be27845400 \ No newline at end of file