A black box and monitoring method for multi-node state monitoring data carried by aircraft

Abstract

The invention provides a multi-node state monitoring data black box and monitoring method carried by an aircraft, which are used for dynamic monitoring and recording of parameters of various parts of the aircraft. The data black box includes more than two data acquisition and editing devices, LVDS serial bus, and CAN bus , cable terminal resistance and a storage server with a management dispatch center; each editor has two types of interfaces and is equipped with two buffers, and the buffer of the editor is connected to the management dispatch center of the storage server through the LVDS serial bus , the LVDS serial bus is used to transmit data, and the CAN bus is used to transmit status command information; through repeated monitoring of data, the problem of LVDS bus out-of-lock is solved to avoid data loss; Synchronize the clocks, and then achieve the purpose of unifying the clocks of the editors, efficient use of cabin space and reduction of black box recovery time.

Description

technical field [0001] The invention relates to a multi-node state monitoring data black box carried by an aircraft and a monitoring method, belonging to the field of aerospace testing. Background technique [0002] The test system is an indispensable part of the space vehicle test, and the data black box is the only test method for the space vehicle to test the system when it is in the launch tube, underwater or returning to the "black barrier area" of the atmosphere. With the continuous development of aerospace test technology, the types and quantities of data black boxes in the test system are gradually increasing. However, the data black boxes placed in each compartment or position do not have any electrical and communication connection with each other, resulting in the clocks of each data black box not being able to be accurately unified. There are many instruments in the black box of on-site test data, which reduces the reliability of the test and increases the cost, ...

AI Technical Summary

Problems solved by technology

The LVDS serial bus has very low voltage swing, high noise tolerance, power consumption is only a few milliwatts, and the transmission rate can reach hundreds of Mbps. Compared with other buses, it has certain advantages, but in the LVDS serial bus During the bus communication process, the receiving end repeatedly receives 4 identical data continuously, and there will be a loss of lock at the LOCK, resulting in data loss

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