Actions
Forum Thread Details
  • State Not Answered
  • Replies 6 replies
  • Subscribers 286 subscribers
  • Views 643 views
  • Users 0 members are here
Related

Exercise Bike Generator

Former Member

I have an 11-year-old son who is overweight; he enjoys games on the computer.  I have a plan to hook his computer monitor up to a generator attached to an exercise bike so that if he wants to see what's going on, he has to pedel.  The monitor is a 12V 3amp monitor.  I am totally new to electronics (I am learning about voltage, ams, current, regulators, capacitors, etc.).  I understand I need a 12v generator.  I, also, understand I need some way to control the voltage, amps, etc. (whatever ?) going from the generator to the monitor (a regulator ?).  Obviously, the pedel rotation speed will vary; but I need a constant output to the monitor.  Also, if he pedels too slow, the monitor will go off (the computer will be plugged into AC current -- so the computer won't shut down if he stops pedeling).  How do I set this up?

Parents
  • 0

    You can program a microcontroller to control sending power prom battery. Then connect the monitor to the battery via controlling cct.

     

    I suggest battery because its provides constant dc supply and it’s protect the devises from fluctuating power.

     

    Once battery fully charged it reaches its stranded terminal voltage and current. If it dissipates through monitor it reduces the stored power little bit. You can sense even small variation of voltage and current.

     

    Let’s say its loose 12 v to  11.4 v within 5 minutes. Then sense that cut off limit and program the MCU to switch of the Cct..

    Then he has to paddle again after 5 mints to turn on his monitor. From that you can improve your timing to doing several tests.

     

    Second thing is finding exact 12 v dc generator and add capacitor banks which has higher discharging time 12 regulator. let say close to at leaset 50  seconds.

     

    Then not need a battery and if the RPM is low capacitor bank gives some constant output for limited time.but this suddenly turn off the device after discharging the capacitor bank. but it can handle variation of RPM and gives sufficient out put for limited period.

Reply
  • 0

    You can program a microcontroller to control sending power prom battery. Then connect the monitor to the battery via controlling cct.

     

    I suggest battery because its provides constant dc supply and it’s protect the devises from fluctuating power.

     

    Once battery fully charged it reaches its stranded terminal voltage and current. If it dissipates through monitor it reduces the stored power little bit. You can sense even small variation of voltage and current.

     

    Let’s say its loose 12 v to  11.4 v within 5 minutes. Then sense that cut off limit and program the MCU to switch of the Cct..

    Then he has to paddle again after 5 mints to turn on his monitor. From that you can improve your timing to doing several tests.

     

    Second thing is finding exact 12 v dc generator and add capacitor banks which has higher discharging time 12 regulator. let say close to at leaset 50  seconds.

     

    Then not need a battery and if the RPM is low capacitor bank gives some constant output for limited time.but this suddenly turn off the device after discharging the capacitor bank. but it can handle variation of RPM and gives sufficient out put for limited period.

Children
No Data