Health energy efficiency detection method of equipment group in air-conditioning room

Abstract

The invention discloses a health energy efficiency detection method of an air-conditioning machine room equipment group. Firstly, a vibration sensor is installed in the machine room, and the received vibration signal is transmitted to a data acquisition system to collect the vibration signal of the equipment; The high-order accumulation of information blind source separation algorithm calculates the separation model W 1 , W 2 . Use the calculated separation model to perform blind source separation on the multi-source mixed signal, thereby extracting the time-frequency characteristics of the equipment fault signal; then carry out signal feature recognition according to these characteristic parameters and the position of the sensor, determine the fault type and equipment working state, according to The analyzed status information is processed accordingly in a timely manner, so as to achieve the purpose of equipment health detection and improvement of equipment operation efficiency. The invention can extract the characteristics of the vibration signal of a single device when multiple devices operate together, thereby correctly judging the health state of the device and improving the operating 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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