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US 7,262,728 B2Granted
Data transfer apparatus for industrial machinery
AssigneeFanuc Corporation
InventorsKazunari Aoyama, Minoru Nakamura, Masahiro Miura
Life of this patent
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Abstract
A pressure measured by a load cell is converted into a digital signal by an A/D converter provided in an analog interface, and is processed by a digital filter provided in the analog interface. A sensor signal processed in the digital filter is transferred to a controller 10 for industrial machinery every transfer cycle via an optical fiber. A digital sampling cycle by the A/D converter is set to be shorter than the transfer cycle.
Claims2
A data transfer apparatus for an injection molding machine transferring a signal every predetermined transfer cycle, comprising:
- a sensor attached to the injection molding machine;
- a controller controlling the injection molding machine, the signal being transferred from the sensor to the controller,
- wherein the injection molding machine has an analog interface including an A/D converter converting an analog signal from the sensor into a digital signal and a digital filter removing noise in the digital signal, and the digital signal in which noise is removed by the digital filter is transferred to the controller via serial communication;
- and
- wherein a sampling cycle of the analog signal by the A/D converter is made shorter than a transfer cycle via the serial communication.
2 more elements
Dependencies are inferred from the claim text.