Health and energy efficiency testing method for air conditioner room equipment group

Abstract

The present invention discloses a health and energy efficiency testing method for an air conditioner room equipment group. First, a vibration sensor is installed in a machine room, and a received vibration signal is transmitted to a data acquisition system to collect vibration signals of equipment. Then, separation models W1 and W2 are calculated by the mutual information high-order accumulation blind source separation algorithm under the natural gradient. The calculated separation models are used for blind source separation of multi-source mixed signals so as to extract the time-frequency characteristics of equipment fault signals. Then, the signal characteristics are identified according to these characteristic parameters and the sensor location to determine the fault type and the equipment operating condition, and the corresponding treatment is timely made based on the analyzed state information, thereby achieving the object of equipment health detection and improvement of equipmentoperation efficiency. The method can extract the vibration signal characteristic of a single operating device during the operation of a plurality of devices so as to correctly judge the health stateof the device and improve the operation efficiency.

Description

technical field [0001] The invention belongs to the technical field of equipment fault diagnosis, and in particular relates to a health energy efficiency detection method for equipment groups in an air-conditioning machine room. Background technique [0002] Under the trend of complex and large-scale equipment, in order to save space resources and facilitate maintenance and management in the air-conditioning room, different types of units are often installed in the same space. At present, the average energy efficiency ratio of domestic air-conditioning systems is about 2.5, and the lowest value is only 1.7, which is far lower than the efficiency value of a single air-conditioning unit. Compared with foreign countries, my country has always been at a disadvantage in terms of equipment energy efficiency utilization. The energy efficiency utilization rate of equipment in foreign countries can reach more than 75%, but in China it is only about 30%. The main reason for this situ...

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Problems solved by technology

However, since the state monitoring method of the sensor can only monitor a single device, it is impossible to accurately and real-time diagnose the influence of factors such as mutual interference of multiple devices and changes in unit operating efficiency.

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