System for monitoring dryer drum temperatures
First Claim
1. A system for measuring the temperatures of heated dryer drums, comprising:
- temperature sensors mounted to the dryer drums for generating temperature signals proportional to the temperatures of the dryer drums and for wirelessly transmitting the temperature signals using radio frequency transmissions;
sensor pickup devices for receiving the wirelessly transmitted temperature signals generated by the temperature sensors;
communications circuitry for receiving the temperature signals from the sensor pickup devices and for communicating the temperature signals; and
processing circuitry for receiving the temperature signals from the communications circuitry and for processing the temperature signal.
1 Assignment
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Accused Products
Abstract
A system is provided for monitoring the temperature of dryer drums in papermaking or textile machinery. Wireless temperature sensors are mounted to each dryer drum. Sensor pickup devices receive temperature signals from the temperature sensors that are processed by a computer. Multiplexers may be used to provide the signals from multiple sensor pickup devices to a radio-frequency transmitter. A radio-frequency receiver may be used to receive signals from the transmitter and provide these signals to a computer. The computer determines the temperature of the drums by processing the temperature signals. The computer may provide control signals to a distributed control system to control the temperature of the drums (e.g., by controlling the flow of steam into the dryer section).
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Citations
30 Claims
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1. A system for measuring the temperatures of heated dryer drums, comprising:
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temperature sensors mounted to the dryer drums for generating temperature signals proportional to the temperatures of the dryer drums and for wirelessly transmitting the temperature signals using radio frequency transmissions; sensor pickup devices for receiving the wirelessly transmitted temperature signals generated by the temperature sensors; communications circuitry for receiving the temperature signals from the sensor pickup devices and for communicating the temperature signals; and processing circuitry for receiving the temperature signals from the communications circuitry and for processing the temperature signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for measuring the temperatures of heated dryer drums, comprising the steps of:
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generating temperature signals proportional to the temperatures of the dryer drums with temperature sensors mounted to dryer drums; wirelessly transmitting the temperature signals with the temperature sensors using radio frequency transmissions; receiving the wirelessly transmitted temperature signals generated by the temperature sensors with sensor pickup devices; communicating the temperature signals received by the sensor pickup devices to processing circuitry with communications circuitry; and processing the temperature signals with the processing circuitry. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A system for measuring the temperatures of heated dryer members, comprising:
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temperature sensors mounted to the dryer members for generating temperature signals proportional to the temperatures of the dryer members and for wirelessly transmitting the temperature signals using radio frequency transmissions; sensor pickup devices for receiving the wirelessly transmitted temperature signals generated by the temperature sensors; communications circuitry for receiving the temperature signals from the sensor pickup devices and for communicating the temperature signals; and processing circuitry for receiving the temperature signals from the communications circuitry and for processing the temperature signals.
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30. A method for measuring the temperatures of heated dryer members, comprising the steps of:
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generating temperature signals proportional to the temperatures of the dryer members with temperature sensors mounted to the dryer members; wirelessly transmitting the temperature signals with the temperature sensors using radio frequency transmissions; receiving the wirelessly transmitted temperature signals generated by the temperature sensors with sensor pickup devices; communicating the temperature signals received by the sensor pickup devices to processing circuitry with communications circuitry; and processing the temperature signals with the processing circuitry.
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Specification