Patent ID: 8269399
Filing Date: 2012-09-18
Classification: H02N

Abstract:
1. A sensor assembly comprising: a first transducer coupled to a machine and oriented with respect to a first axis, said first transducer configured to sense vibration energy of the machine with respect to the first axis and transmit a signal indicative of the sensed vibration energy; a second transducer coupled to the machine and oriented with respect to a second axis that is different than the first axis, said second transducer configured to sense vibration energy of the machine with respect to the second axis and transmit a signal indicative of the sensed vibration along the second axis; a control module coupled with said first transducer and said second transducer, said control module configured to selectively switch said sensor assembly between a first mode of operation wherein said sensor assembly measures an amount of vibration energy induced to said sensor assembly by the machine, and a second mode of operation wherein said sensor assembly stores an amount of energy induced to said sensor assembly; and a power storage device coupled to said first transducer and to said second transducer for receiving electrical energy from said first transducer and said second transducer, said control module configured to switch said sensor assembly from the first mode of operation to the second mode of operation when an energy level of said power storage device is approximately equal to a predefined energy level.