An Aircraft Telemetry System Based on Digital Bus

Abstract

The present invention relates to a remote measurement system of an aircraft based on a digital bus. The remote measurement system of the aircraft based on the digital bus comprises a lithium battery, a digital distributor, a secondary power supply, an interface controller, a collector, a memory and a sensor convertor group. The digital bus and the automatic self-detection function design are employed so as to automatically determine the work state of the system (namely whether the system abnormally works or not) through the measurement of the key point voltage and the current and the memory state data in the test process to accurate locate when the faults happen and improve the system intelligence degree. The state measurement storage design is employed to send the key point voltage and current measurement value, the memory state and the self-detection result to the collector (stored in the memory after framing) and a ground measurement and control system so as to facilitate grasp the system work condition in the aircraft flight process; and moreover, the ground test device and the operation are simplified, and the research cost and the manpower cost are saved.

Description

technical field [0001] The invention relates to an aircraft remote measurement system based on a digital bus, which belongs to the remote external measurement system and is applied to the field of recovery telemetry of high-speed aircraft. Background technique [0002] The telemetry system mainly completes the measurement and storage of various mechanical, thermal and other environmental parameters and other data of the aircraft during flight. Recovery telemetry is one of the main telemetry methods for high-speed aircraft, and storage technology is the core technology of recovery telemetry. The general composition of the storage and recovery telemetry system of high-speed aircraft is similar, and the memory system is mostly used, which is generally composed of power supply and distribution equipment, sensor converter group, acquisition and editing device, interface controller, memory and other equipment. The ground measurement and control system is generally composed of mem...

AI Technical Summary

Problems solved by technology

The current capacity can no longer meet the needs of the telemetry system; no error correction algorithm is used, resulting in a high bit error rate

[0005] The system generally does not have an automatic self-check function, and most of them manually judge whether the system is working properly before the launch of the aircraft. This method is not efficient, not smart enough, and prone to misjudgment

[0006] The system generally does not have the measurement function of the working state. After the flight is completed, when the data is interpreted after the event, the working state of the system cannot be well grasped.