HEALTH MONITORING BICYCLE
You drive the cycle for a time as much as you can and it would give you a number based on your performance from 1 to 5. Also the best part is that the circuit does not need any battery and you can even charge your mobile phone or your laptop using the charging mechanism of the bicycle
Step 1: STEP 1: GET a USELESS BICYCLE
1. Remove the back tyre
2. Take a rope long enough to completely fit on the tyre and a little bit more to accomodate for the motor
3. Create a welding stand for your bicycle
Step 2: STEP 2 : MAKE a MECHANISM FOR MOTOR
1. Now take the rope through the tyre and the rotor of the motor
2. Take a bldc motor gud enough to handel large current
3. The voltage of the motor can be of 20 to 30 volts. I have taken a 24 volts motor
As the person would drive the bicycle voltage would be generated by the motor which will provide charge to the supercapacitor
Step 3: STEP 3 : TAKE a SUPERCAPACITOR BANK
Well I have been doing research work on supercapacitor. Here it has been used for analyzing the performance of the person. However one can remove this from the circuit(if he wishes to only charge his mobile or laptop).
Step 4: STEP 4 : MAKE THE FINAL CIRCUIT
I would give only a basic block diagram of the circuit one can design it very easily himself or herself.
The basic working is that the person charges the supercapacitor thorugh the motor and through that the voltage is used for charging the laptop or mobile and also he amount to which the supercapacitor has charged tells how has the person performed.
Step 5: STEP 5 : BLOCK DIAGRAM
Step 6: STEP 6 : CIRCUIT DIAGRAM
I have used a supercapacitor in this project and hence the input voltage had to be regulated to 15 volts so that supercapacitor does not gets damaged.Therefore I have regulated input voltage to 15 V using LM317. While charging the switch has to be in the charging mode. When the person is done with charging he can switch it to discharge mode (remember not to keep the short circuit switch open). Then the supercapacitor drives the microcontroller and the lcd using LM7805 . Also the voltage is applied to the voltage regulator for analyzing the effort of the person. The voltage across voltage divider will be read by the microcontroller and displayed on the LCD.
I have used PIC 18F4520 for my project. The code for it is a simple modification of the ADC code and LCD. Just convert the incoming voltage using ADC, categorize it on a scale of 1 to 5 and display it on LCD.