HUB UNIT FOR A HIGH TEMPERATURE ELECTRONIC MONITORING SYSTEM
First Claim
1. A hub unit adapted for use in a monitoring system for monitoring engine performance parameters of a gas turbine engine while operating, the monitoring system comprising sensors mounted on the engine for sensing the engine performance parameters and generating analog sensor outputs, the hub unit comprising:
- a housing;
at least one signal conditioning circuit board within the housing and adapted to receive the analog sensor outputs from the sensors;
a control circuit board within the housing, connected to the signal conditioning circuit board, and adapted to produce digital data corresponding to the analog sensor outputs;
means on the signal conditioning circuit board for multiplexing a plurality of the analog sensor outputs generated by the sensors to produce an individual multiplexed analog output; and
at least one amplifier with adjustable gain for scaling the analog sensor outputs of the individual multiplexed analog output to produce an individual conditioned multiplexed analog output from which the corresponding digital data are produced, the amplifier and the adjustable gain thereof being controlled by the control circuit board.
1 Assignment
0 Petitions
Accused Products
Abstract
A hub unit adapted for use in a monitoring system that monitors engine performance parameters of a gas turbine engine. The hub unit includes a housing, at least one signal conditioning circuit board within the housing and adapted to receive the analog sensor outputs from the sensors, and a control circuit board within the housing, connected to the signal conditioning circuit board, and adapted to produce digital data corresponding to analog sensor outputs. The signal conditioning circuit board multiplexes a plurality of the analog sensor outputs generated by the sensors to produce an individual multiplexed analog output, and has at least one amplifier with adjustable gain for scaling the analog sensor outputs of the individual multiplexed analog output to produce an individual conditioned multiplexed analog output from which the corresponding digital data are produced. The amplifier and the adjustable gain thereof are controlled by the control circuit board.
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Citations
18 Claims
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1. A hub unit adapted for use in a monitoring system for monitoring engine performance parameters of a gas turbine engine while operating, the monitoring system comprising sensors mounted on the engine for sensing the engine performance parameters and generating analog sensor outputs, the hub unit comprising:
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a housing; at least one signal conditioning circuit board within the housing and adapted to receive the analog sensor outputs from the sensors; a control circuit board within the housing, connected to the signal conditioning circuit board, and adapted to produce digital data corresponding to the analog sensor outputs; means on the signal conditioning circuit board for multiplexing a plurality of the analog sensor outputs generated by the sensors to produce an individual multiplexed analog output; and at least one amplifier with adjustable gain for scaling the analog sensor outputs of the individual multiplexed analog output to produce an individual conditioned multiplexed analog output from which the corresponding digital data are produced, the amplifier and the adjustable gain thereof being controlled by the control circuit board. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A hub unit adapted for use in a monitoring system for monitoring engine performance parameters of a gas turbine engine operating on a stationary test stand, the monitoring system comprising sensors mounted on the engine for sensing the engine performance parameters and generating analog sensor outputs, the hub unit comprising:
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a housing; a control circuit board and at least one signal conditioning circuit board within the housing, the signal conditioning circuit board being adapted to receive the analog sensor outputs from the sensors, the control circuit board being connected to the signal conditioning circuit board and adapted to produce digital data corresponding to the analog sensor outputs, the control circuit board and the signal conditioning circuit board comprising electrical circuit components that define an analog signal processing path and have accuracy and precision characteristics that drift in response to component aging and to changes in the temperature to which the hub unit is subjected; means for performing a continuous calibration scheme by periodically applying a reference voltage and a zero voltage to the signal conditioning circuit board to determine and remove errors in the analog signal processing path resulting from the drifts of the electrical circuit components of the control circuit board and the signal conditioning circuit board; means on the signal conditioning circuit board for multiplexing a plurality of the analog sensor outputs generated by the sensors to produce an individual multiplexed analog output; and at least one amplifier with adjustable gain for scaling the analog sensor outputs of the individual multiplexed analog output to produce an individual conditioned multiplexed analog output from which the corresponding digital data are produced, the amplifier and the adjustable gain thereof being controlled by the control circuit board. - View Dependent Claims (17, 18)
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Specification