APPARATUS AND METHOD FOR SWITCH STATE DETECTION AND CONTROLLING ELECTRICAL POWER
First Claim
1. :
- A thermal servo device comprising;
circuitry configured to;
receive a temperature signal including data corresponding to a temperature of a battery, wherein the battery powers a first lighting circuit when power from a main power source of the first lighting circuit is absent, and wherein, a second lighting circuit connected on a load side of a switch connecting a main power connection to the main power source appears as a substantially open circuit to a test signal due to diodes in bridge rectifiers included in devices connected on the second lighting circuit;
determine, based on the temperature signal, whether the battery temperature is greater than a predetermined threshold; and
generate, when the temperature is above the predetermined threshold, a control signal to keep the temperature of the battery below the predetermined threshold.
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Abstract
A device includes a connection receiving power from a power source under normal conditions and circuitry configured to determine, based on an input from the connection, when the power from the power source is absent; output, when the power source is absent, a test signal at the connection; and generate a detection signal based on current flow generated following the output of the test signal, wherein the detection signal indicates a position of a switch connecting the circuitry to the connection and the generated detection signal indicates the switch is closed when the current flow is above a threshold. The circuitry is configured such that when the power from the power source is absent, the switch is dosed, and plural devices are connected on the supply side of the switch, the plurality of devices on the supply side appear as a substantially open circuit to the test signal.
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Citations
20 Claims
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1. :
- A thermal servo device comprising;
circuitry configured to; receive a temperature signal including data corresponding to a temperature of a battery, wherein the battery powers a first lighting circuit when power from a main power source of the first lighting circuit is absent, and wherein, a second lighting circuit connected on a load side of a switch connecting a main power connection to the main power source appears as a substantially open circuit to a test signal due to diodes in bridge rectifiers included in devices connected on the second lighting circuit; determine, based on the temperature signal, whether the battery temperature is greater than a predetermined threshold; and generate, when the temperature is above the predetermined threshold, a control signal to keep the temperature of the battery below the predetermined threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7)
- A thermal servo device comprising;
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8. :
- A method of operating a first lighting circuit,the method comprising;
receiving by circuitry, a temperature signal including data corresponding to a temperature of a battery, wherein the battery powers the first lighting circuit when power from a main power source of the lighting circuit is absent, and wherein, a second lighting circuit connected on a load side of a switch connecting a main power connection to the main power source appears as a substantially open circuit to a test signal due to diodes in bridge rectifiers included in devices connected on the second lighting circuit; determining, based on the temperature signal, whether the battery temperature is greater than a predetermined threshold; and generating by circuitry, based on the temperature being above the predetermined threshold, a control signal to keep the temperature of the battery below the predetermined threshold. - View Dependent Claims (9, 10, 11, 12, 13, 14)
- A method of operating a first lighting circuit,the method comprising;
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15. :
- A non-transitory computer readable medium having stored thereon a program that when executed by a computer, causes the computer to execute a method of operating a first lighting circuit, the method comprising;
receiving a temperature signal including data corresponding to a temperature of a battery, wherein the battery powers the first lighting circuit when power from a main power source of the lighting circuit is absent, and wherein, a second lighting circuit connected on a load side of a switch connecting a main power connection to the main power source appears as a substantially open circuit to a test signal due to diodes in bridge rectifiers included in devices connected on the second lighting circuit; determining, based on the temperature signal, whether the battery temperature is greater than a predetermined threshold; and generating based on the temperature being above the predetermined threshold, a control signal to keep the temperature of the battery below the predetermined threshold. - View Dependent Claims (16, 17, 18, 19, 20)
- A non-transitory computer readable medium having stored thereon a program that when executed by a computer, causes the computer to execute a method of operating a first lighting circuit, the method comprising;
Specification