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Port Fault Detection Circuit

A fault detection circuit and port technology, which is applied in the direction of measuring electricity, measuring electrical variables, measuring devices, etc., can solve the problems of low efficiency and high port cost

Active Publication Date: 2018-12-28
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the embodiment of the present invention provides a port fault detection circuit to solve the problem of high cost and low efficiency of port detection in the prior art

Method used

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Embodiment Construction

[0021] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0022] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, ...

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Abstract

The invention provides a port fault detection circuit. The port fault detection circuit comprises at least one repeater circuit and a processor. The at least one repeater circuit is connected with an output circuit of a port to be detected and an input circuit of the port to be detected and / or an output circuit of another port to be detected and an input circuit of the port to be detected. The processor is used for comparing a first signal acquired from the input circuit of the port to be detected with a first threshold, when the difference between the first signal and the first threshold is larger than a second threshold, it is determined that the port to be detected is faulty, wherein the first signal is a signal received by the repeater circuit from the output circuit of the port to be detected and passing through the input circuit of the port to be detected or is a signal received by the repeater circuit from another port to be detected and passing through the input circuit of the port to be detected. According to the invention, problems that the port detection cost is too high, and the detection efficiency is relatively low are solved; when the port is detected, external extra loads are not needed; by means of the connected repeater circuit, the fault port and the fault circuit can be positioned quickly.

Description

technical field [0001] The invention relates to the field of port detection, in particular to a port fault detection circuit. Background technique [0002] The general digital control system has comprehensive and rich port types, and some ports also integrate input functions or output functions at the same time, and each function also has multiple working modes. [0003] So many ports and modes make test verification and fault detection difficult, the test methods in the prior art, such as figure 1 As shown, the port function of the general digital control system cannot be quickly tested, and the external load needs to be replaced every time a mode is changed. A large number of ports and modes have higher requirements on the number and specifications of the load. Under the condition of ensuring a comprehensive test, manual replacement of loads becomes time-consuming and labor-intensive, which makes fault detection inefficient, especially in production detection and after-sa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/04
CPCG01R31/69
Inventor 唐照翔蒋谦任鹏文武林宝伟
Owner GREE ELECTRIC APPLIANCES INC
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