Abnormality detection method and device and air conditioning system
An air-conditioning system and anomaly detection technology, which is applied in heating and ventilation control systems, heating and ventilation safety systems, heating methods, etc., can solve problems such as difficult to accurately determine the anomalies of air-conditioning systems, and achieve the effect of accurate anomaly judgment results
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Embodiment 1
[0034] In the existing detection method, the detection data of the air-conditioning system is input into a preset fault detection model based on PCA, and whether the air-conditioning system is abnormal is determined according to the detection results output by the detection model. Since the PCA-based fault detection model is trained for fixed working conditions and / or fixed units, the PCA-based fault detection model is a static detection model, that is, the PCA-based fault detection model It is difficult to adapt to the anomaly detection of the air-conditioning system where the working condition changes, and it is also difficult to adapt to the anomaly detection of the air-conditioning system where the unit changes, that is, it is difficult to obtain accurate detection results through the fault detection model based on PCA. In addition, the inventors of the present application know through analysis that due to the increasing complexity of existing air-conditioning systems, even...
Embodiment 2
[0053] image 3 A flow chart of the second anomaly detection method provided by the embodiment of the present application is shown. In this embodiment, steps S33 to S36 are the same as steps S11 to S14 in the first embodiment above, and will not be repeated here. In addition, this embodiment adds the steps of how to generate a pre-built autoencoder based on the first embodiment, which is described in detail as follows:
[0054] Step S31, determining structural parameters according to the complexity of the air conditioning system.
[0055] In this embodiment, the complexity of the air conditioning system is related to the structure of the air conditioner itself and / or the function of the air conditioner. For example, compared with the single-connected air conditioner, the complexity of the air-conditioning system corresponding to the multi-connected air conditioner is higher. For example, compared with an air conditioner with a single function, the air conditioning system cor...
Embodiment 3
[0075] Figure 5A flow chart of the third anomaly detection method provided by the embodiment of the present application is shown. In this embodiment, step S51 is the same as step S11 in the first embodiment, and step S55 is the same as step S14 in the first embodiment, and details are not repeated here. In addition, this embodiment mainly adds the step of eliminating the influence of environmental factors on the target parameters on the basis of the first embodiment, which is described in detail as follows:
[0076] In step S51, target parameters are acquired, and the target parameters include operating parameters of the air conditioning system.
[0077] Step S52, eliminating the influence of environmental factors on the target parameters.
[0078] In this embodiment, considering that the same air-conditioning system operates in different regions, its operating conditions are different. Therefore, in order to improve the universality of the subsequent abnormal judgment resu...
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