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Set start/stop optimized controller based on side senser on-line fault diagnosis for air conditioner water

A fault diagnosis and sensor technology, applied in heating and ventilation control systems, space heating and ventilation, household heating, etc., can solve the problems of difficult detection of multiple sensor faults, difficult online diagnosis, and difficult fault quantification, etc., to achieve saving Diagnosis costs, recovery of economic losses, and the effects of shortening the diagnosis cycle

Inactive Publication Date: 2006-05-17
SHANGHAI JIAOTONG UNIV
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Problems solved by technology

[0004] Some current fault diagnosis methods such as model-based and pattern-recognition-based methods have the following shortcomings: first, it is difficult to detect multiple sensor faults; second, there are certain difficulties in quantifying faults; third, it is difficult to carry out online diagnosis

Method used

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  • Set start/stop optimized controller based on side senser on-line fault diagnosis for air conditioner water

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Embodiment Construction

[0014] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0015] Such as figure 1 As shown, the present invention mainly includes an input module 1, a steady-state data judging module 2, a fault detection module 3, a flow sensor fault diagnosis module 4, a temperature sensor fault diagnosis module 5, a confidence judgment module 6, a data recovery module 7, and unit operation The number optimization module 8 , the optimization selection module 9 for start-up and shutdown units, and the output module 10 .

[0016] The output end of the input module 1 is electrically connected to the input end of the steady-state data judgment module 2, the output end of the steady-state data judgment module 2 is electrically connected to the input end of the fault detection module 3, and the output end of the fault detection module 3 is connected to the flow sensor failure The input end of diagnosis module 4 is ...

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Abstract

Diagnosis controller based on online fault diagnosis of air-conditioning refrigerant water side sensor and unit start-stop optimization, mainly including input, steady-state data judgment, fault detection, flow sensor fault diagnosis, temperature sensor fault diagnosis, confidence judgment, data recovery, unit operation The optimization of the number of units, the optimization selection and output of the start-stop unit and other modules. Using the method of statistical mathematics, according to the energy conservation and mass conservation of the system, first carry out online fault diagnosis for the temperature and flow sensor faults of the central air-conditioning refrigerant water system; Start and stop for optimal control. The diagnostic controller proposed by the present invention is not only effective for the diagnosis of multiple sensor faults, but also can accurately diagnose the location and size of the fault, and can optimize, select and control the start and stop of the unit according to the diagnosis results to achieve energy saving the goal of.

Description

Technical field: [0001] The present invention relates to a unit start-stop optimization controller based on online fault diagnosis of air-conditioning refrigerant water side sensors, in particular to a diagnostic controller that optimizes unit start-stop and saves energy after online diagnosis of sensors using statistical mathematics methods The invention belongs to the technical field of building environment equipment and control. Background technique: [0002] With the continuous development of the world's economic level and technological level, heating ventilation and air conditioning (HVAC, Heating Ventilating and Air-Conditioning) systems in modern buildings have been more and more widely used, and the use of central air conditioning has improved on the one hand. It improves people's working and living conditions, but on the other hand it consumes huge energy. With the increasingly widespread application of building intelligent control systems, optimal control and ener...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F11/02
Inventor 晋欣桥杜志敏
Owner SHANGHAI JIAOTONG UNIV
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