Method of adjusting an optronic fuse system
AssigneeDiehl Munitionssysteme GmbH & Co. KG
InventorAndreas Ganghofer
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Abstract
A method of adjusting the sensitivity of stabilizing an optronic fuse system, which includes a controller, and, as a receiver, an avalanche photodiode (APD). In order to avoid adjustment of an analog electronic system with potentiometers, laser trimming or individual resistor fitment, the controller ascertains the temperature of the APD in such a way that the sensitivity of the APD corresponds to its reference sensitivity at any temperature.
Claims4
A method of adjusting the sensitivity of an optronic fuse system which comprises a transmitter, a receiver, an amplifier chain, and a sensor connected ahead of the receiver and of the amplifier chain;
- comprising a calibration cycle, with the steps of:
- (a) measuring a signal level during operation of the system;
- (b) adjusting the sensitivity of the optronic fuse system by setting only the sensitivity of the sensor;
- (c) storing a gain factor which is dependent upon said measured signal level into a controller for setting the sensitivity of said sensor, said sensor comprising an avalanche-photodiode (APD), said avalanche-photodiode having a bias voltage which is set by the controller;
- and
- (d) implementing a temperature compensation during the operation of the optronic fuse system commencing from a working point in a temperature curve for the avalanche-photodiode which corresponds to a specified reference sensitivity.
Dependencies are inferred from the claim text.