The Diagnostic Device Design And Research For Aerial Camera

With the wide use of aerial camera products, aerial reconnaissance equipment will cause a variety of faults when in poor environment condition. In order to ensure the normal operation of the camera, it is very necessary to do camera function detection and fault location on the ground.The measuring instrument is to locate the fault and to repair timely. A new type of special equipment is also the extension and improvement of the technical achievements of aerial CCD camera, and this enhances the design concept and the comprehensive design capability.The technology of the detector is very high, it is essential a diagnostic system. Firstly, sampling all the subsystems, components, components of the key nodes to get a lot of information. In the scheme, using hardware computer and collection equipment to receive the data of the tested product. Secondly, we establish a fault model according to do the diagnosis, decision making, location and troubleshooting. Through the establishment of the software and fault model, the state of the product is detected. The digital design and the combination of good human-computer interaction interface. It is convenient for upgrading and subsequent product integration. The software design is an important part of the system.The diagnostic system has broad prospects for development. This system can be developed to reduce the failure rate and to improve the reliability. Some products, so-called "electrical protection" is designed according to the adaptive concept. Its single variable adaptive system is relatively simple(criterion model) and easy to achieve.Composition features include: the hardware includes the computer(movement), the screen display, the cabinet(portable), the digital / analog interface, the output equipment, the shield ground connection of electromagnetic compatibility cabinet. Software includes: the top-level software design, power on self-test / instruction primary detection mode, function testing, troubleshooting, good man-machine relationship and interface design, software output interface. Output mode: print output, recording output, screen display output, interface output, etc.The principle of the detector is to establish the fault model, then to detect and judge through the collected data. The fault detection rate is not less than 80%, the fault isolation rate is not less than 90%, the false alarm rate is no more than 2%. Through the self- Detection and second- level detector. The probability of fault isolation to 1 SRU is not less than 80%, the probability of isolation to 2 SRU is not less than 90%, the probability of isolation to 3 SRU 100%.The main functions are as follows: task management and control function; sending relevant flight simulation control information; simulation for information management computer; power supply to the products; self-detection function; fault detection and isolation for the field on replaceable unit(SRU); the camera working state display; graphical interface window identifier through high resolution display.The detector has been effectively promoted the use of military modern equipment, and has played an effective role in protection.