A kind of SRU fault confirmation method and device based on detection heat platform
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A fault and signal technology, applied in the field of SRU fault confirmation based on the detection hot stage, which can solve problems such as large uncertain factors, difficult SRU testing, and difficulty in fault confirmation.
Active Publication Date: 2018-11-27
SOUTHWEST CHINA RES INST OF ELECTRONICS EQUIP
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[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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specific Embodiment approach
[0063] A kind of SRU failure confirmation method based on detection hot platform, SRU self-inspection function test comprises:
[0064] Step 1: Insert the SRU whose fault needs to be confirmed into the detection hot station;
[0065] Step 2: ATE sends the corresponding command 7e 0D 0B 01... 00 00 00 7e through the serial port;
[0066] Step 3: The computer board receives and analyzes the serial port command sent by ATE, and sends it to the bus controller;
[0067] Step 4: The sampling circuit collects the inherent basic signal sent by ATE, and sends it to the switch signal register for storage;
[0068] Step 5: The bus controller reads the BIT switch signal and direction switch signal in the switch signal register according to the instructions of the computer board, and at the same time generates the address decoding enable control signal and indicator light control of the SRU module according to the operation of the computer board on the external storage space The signal i...
Embodiment 2
[0073] Embodiment two: a kind of SRU failure confirming method based on detecting hot platform, SRU functional performance test is characterized in that comprising:
[0074] Step 1: Insert the SRU whose fault needs to be confirmed into the detection hot station;
[0075] Step 2: ATE sends the test command 7e 0D 0B 02... 00 00 00 7e through the serial port;
[0076] Step 3: The computer board receives and analyzes the serial port command sent by ATE, and sends it to the bus controller;
[0077] Step 4: The sampling circuit collects the inherent basic signal sent by ATE, sends it to the switch signal register for storage, and sends it to the trigger signal generating unit for external triggering to generate the waveform signal required for SRU testing;
[0078] Step 5: The bus controller generates the enable signal and control signal of the SRU module to the SRU control register according to the operation of the computer board on the external storage space, and at the same time...
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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...
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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/00
CPCG01R31/00
Inventor 王帅
Owner SOUTHWEST CHINA RES INST OF ELECTRONICS EQUIP
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