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US 10,520,962 B2Granted
Supply voltage detection device and method for detecting a supply voltage
AssigneeEaton Intelligent Power Limited
InventorJohannes Frucht
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AssigneeEaton Intelligent Power Limited
InventorJohannes Frucht
Estimating the term…
The present invention relates to a supply voltage detection device (1), in particular for at least one load, for monitoring a rectified mains voltage of a mains voltage supply (2) and for comparing a detected mains voltage value with a predetermined reference value, wherein, if the detected mains voltage value is lower than the reference value, switching to e.g. an emergency voltage of an emergency voltage supply can be effected by means of an electronic control system (3). In addition, if a voltage limit value has been exceeded, the rectified mains voltage can be fed to an optocoupler (4) and a signal can be transmitted by said optocoupler for the duration of this excess, a duty factor that is dependent on the mains voltage value being determinable from the duration and the period of said signal.
A supply voltage detection device, for at least one load, for monitoring a rectified mains voltage of a mains voltage supply and for comparing a detected mains voltage value with a predetermined reference value, wherein, if the detected mains voltage value is lower than the predetermined reference value, switching to e.g. an emergency voltage of an emergency voltage supply can be effected by means of an electronic control system, characterized in that, if a voltage limit value has been exceeded, the rectified mains voltage is fed to an optocoupler and a signal can be transmitted by said optocoupler for a duration of this excess, a duty factor that is dependent on the mains voltage value being determinable from the duration and a period of said signal.
A method for detecting a mains voltage of a mains voltage supply, for at least one light, comprising the steps of detecting a mains voltage value of a rectified mains voltage of the mains voltage supply and comparing it with a predetermined reference value and, if the detected mains voltage value is lower than a reference value, switching to an emergency voltage of an emergency voltage supply by means of an electronic control system, and, in addition, feeding the rectified mains voltage to an optocoupler, if a voltage limit value has been exceeded, and transmitting a signal by said optocoupler for a duration of this excess as well as determining a duty factor that is dependent on the mains voltage value from the duration and a period of said signal.
Dependencies are inferred from the claim text.