Method and apparatus for data acquisition in an asset health management system
AssigneeRochester Institute of Technology
InventorsMichael G. Thurston, Christopher E. Piggott
Life of this patent
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Abstract
An asset management system includes a controller area network bus and a data acquisition module connected to the controller area network bus. The data acquisition module has a plurality of analog input channels. One or more sensor systems are connected to the input channels with the input channels receiving analog signals from the sensor systems. The data acquisition module passively conditions the received analog signals prior to digital conversion.
Claims22
An asset management system, the system comprising:
- a controller area network bus;
- a data acquisition module connected to said controller area network bus, said data acquisition module having a plurality of analog input channels;
- and
- one or more sensor systems connected to said input channels, said input channels receiving analog signals from said sensor systems,
- wherein said data acquisition module passively conditions said received analog signals with two or more of input scaling, filtering and voltage clamping without actively conditioning said received analog signals prior to digital conversion.
An asset health management system, the system comprising:
- a data acquisition module connected to a data bus, said data acquisition module having a plurality of input channels;
- a power supply module that provides power to said data acquisition module;
- and
- a plurality of sensors connected to said input channels, at least one of said sensors having a different power requirement than another sensor,
- wherein power to each of said plurality of sensors is provided based on said power requirement of each sensor, said power provided through said data acquisition module and wherein a current of up to 100 mA is supplied to said sensors through power provided to said data acquisition module.
A data acquisition device for an asset management system, the device comprising:
- a plurality of analog inputs for receiving first signal data from a first sensor and second signal data from a second sensor, said analog inputs capable of receiving first signal data having a different voltage range than said second signal data;
- a passive analog signal conditioner for passively conditioning said first signal data and said second signal data with two or more of input scaling, filtering and voltage clamping without any active conditioning;
- and
- a high dynamic range analog-to-digital converter for converting said passively and not actively conditioned first signal data and said passively and not actively conditioned second signal data, said analog-to-digital converter connected to said passive analog signal conditioner,
- wherein said analog-to-digital converter operates over a single input range.
An asset management system, the system comprising:
- a controller area network bus;
- a data acquisition module connected to said controller area network bus, said data acquisition module having a plurality of analog input channels;
- and
- one or more sensor systems connected to said input channels, said input channels receiving analog signals from said sensor systems,
- wherein said data acquisition module passively conditions said received analog signals with two or more of input scaling, filtering and voltage clamping prior to digital conversion and said data acquisition module has an input range of approximately −40V to 40V with an accuracy of approximately ±100 mV.
A data acquisition device for an asset management system, the device comprising:
- a plurality of analog inputs for receiving first signal data from a first sensor and second signal data from a second sensor, said analog inputs capable of receiving first signal data having a different voltage range than said second signal data;
- a passive analog signal conditioner for conditioning said first signal data and said second signal data with two or more of input scaling, filtering and voltage clamping;
- and
- a high dynamic range analog-to-digital converter for converting said first signal data and said second signal data, said analog-to-digital converter connected to said passive analog signal conditioner,
- wherein said analog-to-digital converter operates over a single input range and supports an input range of at least ±40V with a precision greater than 1 mV.
Dependencies are inferred from the claim text.