System and method for automatically detecting power supply voltage
AssigneeHon Hai Precision Industry Co., Ltd.
InventorHeng-Chen Kuo
Life of this patent
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Abstract
A system for automatically detecting power supply voltage includes a voltage divider connected to a power supply, an A/D converter connected to the voltage divider, a detection module connected to the A/D converter for comparing a digital signal converted by the A/D converter with a reference signal stored in the detection module, a relay driving circuit connected to the detection module, a relay connected to the relay driving circuit and the power supply respectively, and an outlet coupled to the relay for outputting voltage. If the digital signal matches the reference signal, the detection module controls the relay driving circuit to turn on the relay to output voltage at the outlet. Relevant method for detecting power supply voltage is also provided.
Claims10
A system adapted for automatically detecting power supply voltage, the system comprising:
- a voltage divider connected to a power supply source;
- an A/D converter connected to the voltage divider;
- a detection module connected to the A/D converter for comparing a digital signal converted by the A/D converter with a reference signal stored in the detection module;
- a relay driving circuit connected to the detection module;
- at least one relay connected to the relay driving module and the power supply respectively, said relay controlled by the relay driving module;
- and
- at least one outlet coupled to said corresponding relay for outputting voltage;
- wherein if the digital signal is the same with the reference signal, the detection module controls the relay driving module to turn on said relay to output voltage from corresponding outlet.
A method adapted for automatically detecting power supply voltage comprising the steps of:
- obtaining an AC voltage from a power supply source;
- converting the AC voltage into a digital signal;
- and
- comparing the digital signal with a reference signal, if a match, turning on a relay to output the AC voltage at an outlet.
A method for monitoring power supply voltage, comprising the steps of:
- providing a voltage from a power supply source;
- converting said voltage into a digital signal;
- displaying a value of said voltage according to said signal;
- and
- outputting said voltage when said voltage is identified as acceptable based on said signal.
Dependencies are inferred from the claim text.