Flashlight for alarm systems
View Patent ↗A flashlight for alarm systems includes a light source containing at least one light emitting diode and a circuit which controls said light source. The circuit has a feed supply, a current converter, and flash control device. The current converter, the light source, and the flash control device are connected in series. The current converter includes a control unit, an inductor, an induction stop, and a resistor which are connected in series. The flash control device includes at least one switch for actuating the light source and a microprocessor for controlling the at least one switch.
1. A flashing light for an alarm system, comprising:
a light source containing at least one light-emitting diode and a circuit for controlling said light source;
said circuit including a feed supply and a flash control device; and
a current converter connected in series with said light source and said flash control device;
wherein said current converter is an inductive down converter including a control unit connected in series with an inductor, an induction stop, and a resistor;
wherein said resistor, in conjunction with said control unit, is configured to maintain a current flowing to said light source constant during a duration of illumination;
wherein said flash control device includes at least one switch for actuating said light source and a microprocessor for actuating said at least one switch; and
wherein said microprocessor includes a data communication connection to a message bus of the alarm system.
2. The flashing light according to claim 1 , wherein said light source comprises a plurality of light-emitting diodes connected in two branches, and wherein a switch is connected in each of said two branches.
3. The flashing light according to claim 2 , wherein said switch is controlled with a pulse signal have an adjustable pulse shape.
4. The flashing light according to claim 3 , wherein said microprocessor is configured to control the pulse shape of the pulse signal in dependence on an ambient temperature, and wherein said microprocessor includes or is connected to a temperature sensor.
5. The flashing light according to claim 4 , wherein a width of the pulse increases with increasing temperature.
6. The flashing light according to claim 2 , wherein said light source is controlled by alternately switching said two branches containing said light-emitting diode on and off.
7. The flashing light according to claim 2 , wherein said light source is controlled with a sequential flash emission in form of preliminary flashes and main flashes.