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A fault detection device and method

A technology of fault detection and fault count, applied in the field of control, can solve problems such as large memory usage and complicated program processing

Active Publication Date: 2018-11-23
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When N is large, the program is more complicated to process, and many variables are needed for timing, which will take up a lot of memory

Method used

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  • A fault detection device and method
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  • A fault detection device and method

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Embodiment Construction

[0042] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments of the present invention and corresponding drawings. Apparently, the described embodiments are only 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.

[0043] It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodi...

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Abstract

The invention provides a fault detection device and method. The fault detection device is characterized in that the device comprises an equalization unit, a frequency acquisition unit and a fault judgment unit. The equalization unit is used for equally dividing a first preset time interval T1 into x part, wherein x is a positive integer greater than or equal to 2, the time interval of each part is a second preset time interval T2, and T2=T1 / x; the frequency acquisition unit is used for acquiring the frequency of meeting the preset conditions of each second preset time interval T2 in the first preset time interval T1; and the fault judgment unit is used for adding the acquired frequency meeting the preset conditions in the x second preset time intervals T2, and the judgment result indicates the fault situation if the sum of addition is equal to or greater than the first preset fault frequency N1. According to the fault detection device and method, the actual fault information can be effectively reflected and the detection result is enabled to be closer to the actual situation, and memory occupation can also be reduced so that the resources are enabled to be reasonably utilized.

Description

technical field [0001] The invention relates to the control field, in particular to a fault detection device and method. Background technique [0002] When performing fault detection, within a preset time period T1, a certain signal is judged every other preset time period T3, and if a certain condition is met, it is recorded once. If a total of N times are accumulated within the T1 time period, it is determined that a fault has occurred. For this kind of fault detection, there are generally two existing methods. [0003] One is to not do time lapse, to clear the number of times after each T1 time, and to count again in the next T1 time period. This method is simple to process, but it is easy to ignore the actual fault information. It is possible that a certain period of time between the previous T1 time period and the current T1 time period meets the number requirements, but no fault is reported. This method as figure 1 shown. [0004] The other is to do time lapse. E...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01D21/00
CPCG01D21/00
Inventor 张琴兰周葆林庞维容李游吴琪余建华
Owner GREE ELECTRIC APPLIANCES INC