taekwondo electronic hugo

[Mono Electronic]

hi friends
I want to make a taekwondo hugo that has the ability to separate the blows of the hand and foot.We need a sensor to detect foot strikes.What is your solution؟

thanks

 

[bill nahd]

Hello Mono Electronic,
I suppose you need a sort of vibration sensor for this.

Just an idea:
I made a 'drumpad' once. Just a wooden disc with a piëzo buzzer glued underneath. When you hit the disc with a stick, the buzzer gives a little voltage variation.
Maybe you can install some buzzers on strategic spots on Hugo... electronics do the rest. ^_^

some url's i found on this subject:
http://hackedgadgets.com/2009/05/06/piezoelectric-amplifier-circuit/
http://www.discovercircuits.com/DJ-Circuits/vibrationalarm.htm

Success,
-bill-

 

[ADWSystems]

My first thought is, how are you going to separate or distinguish between them? Strength of impact? I light (gentle) foot kick could register as a hand blow. Another method would be by the physical size of the impact. But still a small foot could register as the size of a hand. Have you any thoughts on methods you were thinking to distinguish between them?

 

[AnalogKid]

My first thought is that the question needs a lot of work. What is a hugo? Separate how? Location? Angle of incidence? Contact area? Frequency? Force? Quantity?

Think about what you are asking, then think about *whom* you are asking, then provide the information and context needed to translate your question into an answer.

Better question = better answer.

ak

 

[audioguru]

I think the OP got the letters mixed up. It is not Hugo, instead it is Hogu.
Wikipedia says that a "taekwondo hogu" is chest protector armor. It is hit by the opponent's fist or heel.

You do not use a piezo buzzer to detect vibration. Instead you use a piezo transducer (speaker).
Because the "buzzer" beeps by an oscillator circuit inside that needs a DC power supply source for it to transmit sound, but it does not detect sound nor vibration.
A piezo transducer can be fed from an oscillator for it to beep or it can be used as a poor quality microphone.

 

[Mono Electronic]

Easy to understand:
You consider a punching bag.I want to build a circuit that when the foot hit a punching bag warning horn to be sounded.But when the fist to hit the circuit does not react.
My own idea is that a metal detector circuit placed insinde punching bag and put a piece of metal as well as on foot.When the foot strike hit the punching bag, the circuit can identify foot strike.
Do you have an idea you like better?

 

[Ian Rogers]

Maybe a job for RFID... little sensors on the foot and hand, but you would need to have a shock sensor as the RF will register even if you come close to the punchbag... Then as least with the shock sensor you could monitor the force as well..

 

[bill nahd]

Ha, yes audioguru, i meant a piëzo transducer. Good to make clear the difference.

I think a metal detector could work. May you can make a custom detection coil for it. For a well defined detection area.

Also Ian's idea of the RFID is good, but that will probably make the system more complex.
On the other hand... with every tori his (her) own RFID tag, you could make a sort of personalized heel kick counter. ^_^

-bill-

 

[atferrari]

Maybe a job for RFID... little sensors on the foot and hand, but you would need to have a shock sensor as the RF will register even if you come close to the punchbag... Then as least with the shock sensor you could monitor the force as well..

Hola Ian,

My closest experience with TKD is from watching my son in actual practice and I know that punches and kicks can be really FAST. Could an RFID tag cope with that? I use them just to pay things / open doors.

 

[Ian Rogers]

Hola Ian,

My closest experience with TKD is from watching my son in actual practice and I know that punches and kicks can be really FAST. Could an RFID tag cope with that? I use them just to pay things / open doors.

No Idea!!!

I'm just offering support.. Its up to "karate kid" to see if it's viable!!

 

[Musicmanager]

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