An online software upgrade circuit for airborne ejection life-saving products

Abstract

The invention belongs to the technical field of aviation lifesaving and relates to an online software upgrading circuit of an onboard ejection lifesaving product. The online software upgrading circuit is characterized by comprising a duplex single pole triple throw switch, two single-linkage single pole triple throw switches and two RS422 communication chips. The invention provides the online software upgrading circuit of the onboard ejection lifesaving product, so that an original tedious upgrading method of some type of new onboard product that a casing needs to be needs to be disassembled / assembled is greatly simplified; on the premise of ensuring the safety and the reliability of online software upgrading of the product, the efficiency of software upgrading of the onboard ejection lifesaving product is improved.

Description

technical field

[0001] The invention belongs to the technical field of aviation lifesaving, and relates to an online software upgrading circuit for airborne ejection lifesaving products. Background technique

[0002] At present, due to the high reliability and high safety of the life-saving system, the airborne electronic products in the catapult life-saving system do not have the ability to upgrade and write on-site software. When upgrading the software of a certain type of airborne new product, it is necessary to remove the casing for software upgrade, and then install the casing. Not only is the upgrade process cumbersome, but the reliability and safety of the product may be affected during the process of disassembling the casing. It needs to be tested again after the software is upgraded, but the site does not have the conditions for a comprehensive test, and it is difficult to find the damage caused to the product during the process of disassembling and assembling the s...

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