Control system and power supply unit
AssigneeOMRON Corporation
InventorsTatsuo Ogaki, Seiji Oka, Kenji Komatsubara
Life of this patent
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Abstract
This power supply unit of a control system outputs a notification signal to a calculation unit when a time in which an input voltage becomes smaller than a threshold voltage exceeds a prescribed first measurement time. When detecting that a predetermined second measurement time has elapsed after the notification signal has been received, the calculation unit outputs an instruction signal instructing the execution of a process before a stop in preparation for a prescribed stop of power supply, and executes the process before the stop in place of the current process. Settings of the threshold voltage and the second measurement time are configured to be changeable by means of an external operation.
Claims14
A control system comprising:
- a calculation unit that executes an arithmetic operation process;
- and
- a power supply unit that supplies power to the calculation unit,
- wherein the power supply unit includes:
- a power converting unit that charges a part of an input power input from an outside and converts a remainder of the input power into the power supplied to the calculation unit;
- and
- a first detection unit that compares a voltage of the input power with a threshold voltage and outputs a notification signal for notifying that predetermined power supply is not able to be performed in a case in which a time, over which a magnitude of the voltage has been lower than the threshold voltage, is detected to be over a first measurement time set in advance,
- the first detection unit is able to change a setting of the threshold voltage by an external operation, and
- wherein the calculation unit includes:
- a second detection unit that outputs an instruction signal for instructing an execution of pre-stop processing in preparation for stopping of the predetermined power supply in a case in which it is detected that a second measurement time set in advance has elapsed after receiving the notification signal;
- and
- a processing execution management unit that continues execution of the arithmetic operation process during the second measurement time and executes the pre-stop processing in place of the arithmetic operation process that is currently being executed after receiving the instruction signal,
- the second detection unit is able to change a setting of the second measurement time by an external operation.
A power supply unit that supplies power to a calculation unit executing an arithmetic operation process, the power supply unit comprising:
- a power converting unit that charges a part of an input power input from an outside and converts a remainder of the input power into power supplied to the calculation unit;
- and
- a first detection unit that compares a voltage of the input power with a threshold voltage and outputs a notification signal for notifying that predetermined power supply is not able to be performed in a case in which a time, over which a magnitude of the voltage has been lower than the threshold voltage, is detected to be over a first measurement time set in advance,
- wherein the calculation unit receives the notification signal from the first detection unit, issues an execution signal for executing pre-stop processing in preparation for stopping of the predetermined power supply when a second measurement time set in advance has elapsed, continues to execute the arithmetic operation process during the second measurement time, executes the pre-stop processing in place of the arithmetic operation process that is currently being executed after the execution signal is received, and is able to change the setting of the second measurement time by an external operation, and
- wherein the first detection unit is able to change a setting of the threshold voltage by an external operation.
Dependencies are inferred from the claim text.