about a embedded project

sir, I have a question in embedded applications. QUESTION: THERE IS A STEEL ROD OF SOME LENGTH AND TWO VIBRATION SENSORS ARE ATTACHED TO ITS ENDS. THERE IS A TAP(SOMEONE HITS THE ROD AT SOME POINT), BY USING THE READINGS OF VIBRATION SENSORS WHICH ARE CALIBRATED IN DISTANCE, WE HAVE TO FIND THE EXACT LOCATION OF THE TAP. THANKYOU.

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