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Circuit board fault self-positioning device and method based on programmable logic device

A programming logic and fault location technology, applied in electronic circuit testing, digital circuit testing, detection of faulty computer hardware, etc., can solve the problems of many constraints, difficult to locate systems, etc., to improve efficiency, save time, cost and Labor cost, flexible and convenient fault detection effect

Inactive Publication Date: 2008-10-15
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method is subject to many constraints, and even needs to interrupt the system operation, making it difficult to locate system-level faults

Method used

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  • Circuit board fault self-positioning device and method based on programmable logic device
  • Circuit board fault self-positioning device and method based on programmable logic device
  • Circuit board fault self-positioning device and method based on programmable logic device

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Experimental program
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Embodiment Construction

[0023] The circuit board fault self-location device of the present embodiment is made up of the circuit board system 101 to be detected and the debugging machine 102, and the two are connected through the fault location interface 105, such as figure 1 shown.

[0024] The circuit board system 101 to be detected further includes a programmable logic device 103 (FPGA, CPLD or EPLD) in the board and a chip 104 that is signally connected to the programmable logic device, and the PCB between the two is connected by a chip pin to a pin. The (printed circuit board) connection 106 is connected, and there may be an appropriate matching resistance and capacitance on the PCB connection 106 . Wherein, the programmable logic device 103 has a built-in detection module, which may be provided by the programmable logic device or customized by the user. As an independent module, the detection module runs together with the official PLD code, and is used for sampling the signal to be detected rec...

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PUM

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Abstract

The invention discloses a circuit plate fault self-positioning device and its positioning method based on a programmable logic unit. The device comprises a programmable logic unit with embedded test module and a debug machine which is connected with the programmable logic unit by a fault positioning interface. It positions the programmable logic unit and its embedded test module when the circuit plate system is running, which comprises: positioning the trigger condition, sampling the tested circuit plate signal and transmitting it to the debug machine through the fault positioning interface by the test module when the trigger signal satisfies the trigger condition, doing signal analyzing or human quoting by the debug machine to do circuit plate system fault positioning.

Description

technical field [0001] The present invention relates to the field of electronic data processing (G06) and the field of electric communication technology (H04), in particular to a fault location device and method using a circuit board. Background technique [0002] Circuit board fault location technology is still in constant development. From the most primitive lighting, to using specific self-test software, or using multimeters, oscilloscopes, logic analyzers and other equipment to locate circuit board faults. These methods are either time-consuming, or require a large number of interfaces and test points to be reserved during design, or require a large amount of human intervention, or are limited by the system site, and cannot solve circuit board system-level fault location with high efficiency, low cost, and convenience. . [0003] The Chinese patent application with the application number 03145112.8 discloses a method and equipment for testing circuit boards through JTA...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/317G06F11/22
Inventor 周代彬徐海东
Owner ZTE CORP
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