Light guiding system and a method for controlling the same
First Claim
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1. Light guidance system, comprising:
- an auxiliary power supply;
at least one light unit adapted to emit light for illuminating surroundings; and
a control unit configured to increase a light level of the light unit according to a presence signal indicating a presence of a person, wherein the control unit is further configured to reduce at least one of the increased light level or a duration of the increased light level in response to determining that a power supply capacity of the power supply falls below a power supply capacity value, wherein the reduction enables the power supply to provide a mandatory lighting period and a mandatory light level after the reduction.
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Abstract
According to the present invention, a light guidance system for adapted illumination in emergency or power cut situations is provided, wherein the light guidance system is connected to an auxiliary power supply system (101) and comprises at least one light unit (103) adapted to emit light for illuminating surroundings and a control unit adapted to increase a light level of the light unit (103) according to a presence signal indicating the presence of a person, wherein the increasing of the light level is adjusted to enable a mandatory lighting period and a mandatory light level by considering a power value of the auxiliary power supply system (101).
33 Citations
17 Claims
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1. Light guidance system, comprising:
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an auxiliary power supply; at least one light unit adapted to emit light for illuminating surroundings; and a control unit configured to increase a light level of the light unit according to a presence signal indicating a presence of a person, wherein the control unit is further configured to reduce at least one of the increased light level or a duration of the increased light level in response to determining that a power supply capacity of the power supply falls below a power supply capacity value, wherein the reduction enables the power supply to provide a mandatory lighting period and a mandatory light level after the reduction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. Method for controlling a light guidance system, comprising a light unit and a control unit, connected to an auxiliary power supply, the method comprising:
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determining whether a presence signal is received; determining whether a power supply capacity of the auxiliary power supply system falls below a power supply capacity value; adjusting a level of light emitted by the light unit according to the presence signal; and in response to determining that the power supply capacity falls below the power supply capacity value, reducing at least one of the adjusted light level or a duration of the adjusted light level such that the reducing enables the power supply to provide a mandatory lighting period and a mandatory light level of the light unit after the reducing. - View Dependent Claims (17)
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Specification