A kind of detection method for laser warning annunciators based on tunable laser source in hemisphere space

摘要

Now the detection method of performance data of laser warning annunciators is the conventional target board law of diffuse reflection , this method operation is complex , has poor efficiency , therefore, the study of high efficiency and fast detection method and testing system has important meaning. A method based on tunable simulating laser pulse in hemisphere space has been proposed. In order to simulate a laser subject practically to realize the test for annunciators, the position of a laser source on a hemisphere is controlled, and the output power, wavelength and modulating frequency of the laser source can be adjusted. The locating mechanical structure of the hemisphere surface applying to stepper motor drive has been designed, the software system and the circuit has been developed based on the technique, using AVR microcontroller ATmegal6 to fulfill the function of laser power controlling, wavelength adjustment, frequency modulation and position controlling of hemisphere surface. The method and technique are more efficient compared with the former method for it can be realized by the mechanical & electrical conjunction. The mechanical and electrical structures are given and discussed in this paper.