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US 2021/0231748 A1Published application
Control device for industrial machines
AssigneeDenso Wave Incorporated
InventorTakeru MORISHITA
Life of this patent
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Abstract
A control device for industrial machines includes a plurality of signal input-output circuits configured such that pulse widths of pulse signals output from the signal input-output circuits are different from each other. The control device detects a fault when a pulse signal output from one of the signal input-output circuits has a pulse width different from the pulse width set to the one of the signal input-output circuits.
Claims14
A control device for industrial machines, comprising:
- a plurality of signal input-output circuits each of which is configured to receive an alternating current (AC) signal, convert the AC signal into a pulse signal, and output the pulse signal, the signal input-output circuits further configured such that pulse widths of the pulse signals output from the signal input-output circuits are different from each other, the signal input-output circuits including a first signal input-output circuit;
- a determination unit configured to determine that the AC signal is input to the first signal input-output circuit when the pulse signal having the pulse width set to the first signal input-output circuit is input from the first signal input-output circuit;
- and
- a fault detection unit configured to detect that a fault has occurred in the control device when the pulse signal having a pulse width different from the pulse width set to the first signal input-output circuit is input from the first signal input-output circuit.
1 more element
A control device for industrial machines, comprising:
- a plurality of signal input-output circuits each of which is configured to receive an alternating current (AC) signal, convert the AC signal into a pulse signal, and output the pulse signal, the signal input-output circuits further configured such that pulse widths of the pulse signals output from the signal input-output circuits are different from each other, the signal input-output circuits including a first signal input-output circuit;
- a processor connected to the signal input-output circuits;
- and
- a memory storing instructions configured to, when executed by the processor, cause the processor to:
- determine that the AC signal is input to the first signal input-output circuit when the pulse signal having the pulse width set to the first signal input-output circuit is input to the processor from the first signal input-output circuit;
- and
- detect that a fault has occurred in the control device when the pulse signal having a pulse width different from the pulse width set to the first signal input-output circuit is input to the processor from the first signal input-output circuit.
4 more elements
Dependencies are inferred from the claim text.