Analog digital signal mixed synchronous acquisition system

Abstract

The invention discloses an analog digital signal mixed synchronous acquisition system, and relates to the technical field of signal acquisition and processing devices. The analog digital signal mixedsynchronous acquisition system comprises a signal acquisition adaptor, a digital signal playback adapter, a plurality of digital signal environment analog cards, analog signal acquisition cards, digital signal storage and playback cards, a bus module, a controller, a human-computer interaction module and a power module, one of the digital signal environment analog cards is used as a main card, theremaining digital signal environment analog cards are used as slave cards, the controller provides clock signals for the digital signal environment analog card which is used as the main card, and thedigital signal environment analog card which is used as the main card provides synchronous clock signals for the digital signal environment analog cards which are used as the slave cards and the analog signal acquisition cards. The same clock modules are arranged on the different acquisition cards, one of the multiple acquisition cards is used as a main card, the other acquisition cards are usedas slave cards, and time bases between board cards are maintained to be synchronous through the main cards and the slave cards through synchronous clock sharing links.

Description

technical field [0001] The invention relates to the technical field of signal acquisition and processing devices, in particular to an analog and digital signal hybrid synchronous acquisition system. Background technique [0002] In the localization of electronic spare parts for some imported missile equipment, and other electronic equipment repairs and backgrounds, it is necessary to provide signal input consistent with the actual installation signal environment during the laboratory test of electronic components, and the test process cannot affect the normal operation of the equipment The state may cause the life of the equipment to decrease or even be damaged. In order to solve this problem, it is necessary to study the key technology of signal environment simulation of missile equipment electronic components, and develop software and hardware systems. [0003] At present, the general technical solution is to adopt the "host + adapter" structure, but the system built by t...

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Problems solved by technology

[0003] At present, the general technical solution is to adopt the "host + adapter" structure, but the system built by the existing board card shelf products has the following problems: 1. The existing analog signal acquisition board and digital signal acquisition board cannot share the same Synchronize the sampling clock to realize the mixed synchronous sampling of the electronic components of the large complex weapon system; 2. Directly use the built-in timing and synchronization function of the PXIe platform to realize the synchronization between the boards. The increase or decrease of the boards in the test system requires re-modification of the software parameter, it is impossible to realize any expansion of the system sampling channel

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