Method and device for calibrating a smoke detector
Various embodiments may include a method for the automatic calibration of a smoke detector comprising: mounting the smoke detector in a channel with an aerosol flow, along with a reference smoke detector; calibrating the smoke detector with data received by the reference detector. The reference detector comprises a scattered light receiver and a scattered light transmitter defining a scattered light plane. The aerosol flow through the channel flows through the reference detector transversely to the scattered light plane.
1. A method for the automatic calibration of a smoke detector, the method comprising:
mounting the smoke detector to be calibrated in a channel exposed to an aerosol flow, wherein a reference smoke detector has already been calibrated and located in the channel;
calibrating the smoke detector with data received by the reference detector;
wherein the reference detector comprises a scattered light receiver and a scattered light transmitter defining a scattered light plane; and
wherein the aerosol flow through the channel flows through the reference detector transversely to the scattered light plane.
2. A method according to claim 1 , wherein the reference detector has no housing surrounding the scattered light receiver and the scattered light transmitter.
3. A method according to claim 1 , wherein the channel comprises a housing for mounting the reference detector.
4. A method according to claim 1 , wherein an orientation of the scattered light transmitter matches an orientation of a corresponding scattered light transmitter of the smoke detector.
5. A device for the automatic calibration of a smoke detector, the device comprising:
a channel for an aerosol flow;
a mounting for the smoke detector to be calibrated to be positioned in the channel;
a reference smoke detector previously calibrated and placed in the channel;
a communication interface able to transmit data between the reference detector and the smoke detector to be calibrated;
wherein the reference detector comprises a scattered light plane defined by a scattered light receiver and a scattered light transmitter; and
wherein the aerosol flow through the channel flows through the reference detector transversely to the scattered light plane.
6. A device according to claim 5 , further comprising:
a smoke detector housing to mount the smoke detector in the channel;
a reference detector housing to mount the reference detector in the channel; and
channel sections connecting the smoke detector housing and the reference detector housing such that each output side of a housing is connected to an input side of a downstream housing along the channel;
wherein the reference detector housing accommodates the reference detector in precisely one orientation in which the aerosol flow through the channel flows through the reference detector in the channel transverse to scattered light plane.
7. A device according to claim 6 , wherein a first channel section upstream of the reference detector housing concentrates the aerosol flow in a scattered light region of the reference detector.
8. A device according to claim 6 , wherein a second channel section connected downstream of the reference detector housing has a second cross section larger than a first cross section of a first channel section connected upstream of the reference detector housing.
9. A device according to claim 5 , wherein a position of the scattered light transmitter of the reference detector is adjustable.
10. A device according to claim 5 , further comprising:
a control unit; and
a memory storing a computer program loaded for execution during the operation of the device by the control unit;
wherein the computer program, when executed, causes the control unit to:
receive sensor signals of the reference detector and the smoke detector to be calibrated; and
process the received sensor signals for the calibration of the smoke detector.