A kind of SRU fault confirmation method and device based on detection heat platform

Abstract

The invention relates to the field of ATE (automatic test equipment) and provides a detection heat platform-based SRU fault confirmation method and device so as to solve problems in technologies of the prior art. A virtual unit is formed by SRUs with strong relevance and is specifically equipped with a detection heat platform, SRUs are inserted alternately to match the ATE and so as to complete SRU fault confirmation. The method comprises the following steps: the ATE sends an inherent basic signal and an actual test analysis signal and receives SRU status signal value sent back from a bus controller, whether the SRUs work normally is determined, a sampling unit receives the inherent basic signal sent from the ATE, the inherent basic signal is stored in a switching signal register, the bus controller receives the actual test analysis signal sent from the ATE and sends the same to an SRU control register, the inherent basic signal is sent to the SRU control register after being received from the switching signal register, waveform data is formed in a control data register, a waveform generation unit is controlled to read the waveform data upon triggering of a trigger signal, a complex signal is generated for the SRU control register, and an SRU detection code of an SRU state register is received and sent back to the ATE.

Description

technical field [0001] The invention relates to the field of ATE (automatic test equipment), in particular to a method and device for confirming SRU faults based on a detection heat station. Background technique [0002] The automatic testing equipment is mainly used to test the function and performance of the equipment, with strong automation and high test efficiency. During the test, ATE combines the system self-test results of the equipment, comprehensive fault isolation logic and technical data, etc., to isolate the faults of the equipment to LRU (Outfield Replacement Unit) or SRU, for SRU, the next step is to enter the replacement and repair or transfer to the extension / module level maintenance and inspection process for fault confirmation. When the fault location SRU or the repaired faulty SRU is used as the unit under test, there are two types of SRUs for fault confirmation. One type of SRU has relatively independent functions and simple interface signal simulation. I...

AI Technical Summary

Problems solved by technology

[0005] b) Low fault detection rate

The fault isolation area of ​​the system self-inspection is mainly LRU and a small number of SRUs with independent functions. According to engineering statistics, the detection rate of SRU faults based on the system self-inspection results is generally about 60%, which is difficult to meet the requirements of infield maintenance detection indicators.

[0006] c) Fault confirmation requires manual intervention, with large uncertainties

Applying the traditional method to confirm such SRU faults requires engineers to analyze the system self-test results and fault status of the equipment based on engineering experience, and make human judgments. This method has high requirements on the ability of operators and poor reliability.

[0007] Therefore, based on the traditional method, it is difficult to test the SRU, and it is difficult to confirm the fault efficiently and accurately

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