Abstract: Disclosed is a system for monitoring and control of machinery. In embodiments, a maintenance sensor measures data from a machine and processes the data prior to its wireless transmission to a wireless zone kit, which, in turn, sends the data to a controller. Processing of measured data at a wireless maintenance sensor can include generating a digital energy model, that provides sufficient data to the control system to allow decisions and actions to be taken by an operator, while reducing power consumption and extending a lifetime of the sensor and/or a power source of the sensor. The processing elements may include Fourier analysis of the data. A method of operation of a system for monitoring and controlling a machine is also disclosed.

Abstract: One illustrative embodiment includes an apparatus for detecting if a fastener moves from a first position to a different second position. The apparatus includes a first connector for connecting a first side of a contact bridge to the fastener for movement in response to movement of the fastener, and a second connector for connecting a second side of the contact bridge to an object to remain stationary relative to the object. One of the first and second sides of the contact bridge includes first and second spaced apart electrical conductors; the other side includes a third electrical conductor. The third electrical conductor is positionable to contact the first and second electrical conductors when the fastener is in the first position, and the third electrical conductor may be spaced apart from at least one of the first and second electrical conductors when the fastener is in the second position.

Abstract: One illustrative embodiment includes an apparatus for detecting if a fastener moves from a first position to a different second position. The apparatus includes a first connector for connecting a first side of a contact bridge to the fastener for movement in response to movement of the fastener, and a second connector for connecting a second side of the contact bridge to an object to remain stationary relative to the object. One of the first and second sides of the contact bridge includes first and second spaced apart electrical conductors; the other side includes a third electrical conductor. The third electrical conductor is positionable to contact the first and second electrical conductors when the fastener is in the first position, and the third electrical conductor may be spaced apart from at least one of the first and second electrical conductors when the fastener is in the second position.

Abstract: One illustrative embodiment includes an apparatus for detecting if a fastener moves from a first position to a different second position. The apparatus includes a first connector for connecting a first side of a contact bridge to the fastener for movement in response to movement of the fastener, and a second connector for connecting a second side of the contact bridge to an object to remain stationary relative to the object. One of the first and second sides of the contact bridge includes first and second spaced apart electrical conductors; the other side includes a third electrical conductor. The third electrical conductor is positionable to contact the first and second electrical conductors when the fastener is in the first position, and the third electrical conductor may be spaced apart from at least one of the first and second electrical conductors when the fastener is in the second position.