Calorimeter durability cold and hot impact test abnormity point detection method

Abstract

The present invention relates to a calorimeter durability cold and hot impact test abnormity point detection method. A sampling period ts is taken as an interval to collect the calorimeter durability test process state parameters, a test process state parameter data set is established, the state parameter features are extracted, the state feature parameter model of 4000-times cold and hot impact tests is established, and the abnormality determination is performed through combination of the feature parameter model of each temperature state according to the extracted feature value of each state parameter to complete the abnormality point detection. The calorimeter durability cold and hot impact test abnormity point detection method can perform real-time online detection of the calorimeter durability cold and hot impact test process monitoring fault abnormality points to effectively improve the whole-process monitoring capacity of the test process and improve the fine detection level of the fault abnormality points, and the detection process is automatically controlled, the human cost is saved, the operation is convenient, the reliability is high, the service life is long, the safety is good, and the detection result reliability is high.

Description

technical field [0001] The invention belongs to the technical field of instrument abnormality detection, and in particular relates to a method for detecting abnormal points in a heat meter durability cold and heat shock test. Background technique [0002] In our country, it has been more than ten years since the actual use of heat meters for household measurement has been piloted, and the number of installed and used heat meters has become very large. Judging from the daily testing statistics, the problems in the quality of heat meter products are mainly manifested in the long-term reliability. Research on the durability of heat meters is limited to theoretical aspects and learning understanding. The specific test is mainly limited to the 300h test, and the accumulated data is not very sufficient. The existing durability test devices are also some simple test devices, which cannot fully meet the requirements of the durability test method for heat meters based on the Europe...

AI Technical Summary

Problems solved by technology

The existing durability test devices are also some simple test devices, which cannot fully meet the requirements of the durability test method for heat meters based on the European standard EN 1434-4:2007 "Heat Meter Chapter 4: Type Approval Test" and national standards

[0003] Furthermore, the durability test process takes a long time, the flow cycle changes in a large span, and an abnormal fault may lead to the failure of the entire durability test, resulting in huge economic losses and potential safety hazards for personnel. However, research in this area has rarely been explored at home and abroad.

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