In this project we show that how to get heart beat rate and temperature monitoring and temperature measurement. If heart beat or temperature reaches above peak level then our system automatically send meassage on our GSM mobile .
Heart beat monitor- there are lots of method to measure heart beat when we studied . we will use LDR – light dependent resistor for measuring heart pulse.we will use LM 35 sensor to get signal . LM 35 is temperature sensor.
Output of LM35 will be given to ADC0804. ADC 0804 is 8 bit single channel ADC . adc will be connected at port 1.
ACTION OF STEPS
- Sensor unit.
- Micro controller interface
- Sending message circuit
SENSOR UNIT.
In this sensor unit it is our choice , how many sensor’s we use , IN this project we use two sensor’s, In this project we use two electronics circuit with infra heart beat and temperature.negative voltage as a pulse to the microcontroller.
If we connect two sensor as a input to the microcontroller then we use same
After pressing the flash button, redial button and switch on the telephone line we switch on the memory ic. We use relay circuit to switch off/on hook the telephone line.
GSM circuit
In this portion of telephone dialer circuit we use the telephone dialer circuit. For this we use one dtmf generator circuit to generate a dtmf tones from the circuit. For this purpose we use one DTMF generator circuit to generate a dtmf tones from the circuit. We connect one telephone keypad or push to on switches with this circuit. We use total 14 push to on switches with this circuit to dial the dtmf tones. Once we dial the number in the dialer circuit. Now when micrcontroller press the redial switch then circuit is on and redial the pre-dial number .
All the switches are connected to the pin no no 12,13,14,15,16,17,18. All the switches are connected in row and matrix combination including redial and flash switch.
Components required:
LDR sensor
LM35 or DS1820 or DS1621
ADC 0809
89S52
push to on sw
555 timer
.001 µf,0.1 µf,0.01µf
1µf,
220k,470k,4.7k,10k,
crystal 11.0592 MHz
3.38 MHz.
buzzer,
condenser Mic
speaker 8 ohm
relay 12v 100 ohm
transformaer 6v 500mA
infrared Sensor,
Thermocouples
connecting wires
copper clad board
Uses:
· Easy to implement
· Reliable,
· Low cost,
· Components easily available in market.
