Patent ID: 6978675
Filing Date: 2005-12-27
Classification: G01M

Abstract:
1. A vehicle maintenance device for acoustical and vibration sensing of an engine comprising: a flexible wand member having a channeling running the length of the flexible wand member; a housing coupled to a first end of the flexible wand member; a handle section coupled to a second end of the flexible wand member, the handle section having an internal cavity section; and sensing circuitry for performing acoustical and vibration sensing of an engine of the vehicle wherein the sensing circuitry comprises: a power supply for powering the sensing circuitry; a first microphone exposed to the environment coupled to the power supply; a second microphone sealed from the environment coupled to the power supply; and a switching device coupled to the first microphone and the second microphone to activate and deactivate the first microphone and the second microphone.