期刊
IEEE INTERNET OF THINGS JOURNAL
卷 9, 期 24, 页码 25752-25766出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JIOT.2022.3197930
关键词
CNN; HRC; IoT; meter reading
资金
- National Key Research and Development Program of China [2020YFB0704501]
- National Natural Science Foundation of China (NSFC) [61971031]
- Foshan Science and Technology Innovation Special Foundation [BK22BF001]
This article addresses the issue of numerical metrics in meter reading and proposes a hybrid regression and classification model. The experiments show that the model achieves good performance in numerical precision and classification accuracy.
Nowadays, the meter reading is detached into two parts: 1) image collection and 2) image recognition. Most previous researchers perceived meter reading as an image classification problem and obtained impressive classification performance. However, the numerical is also a critical metric of meter measurement and has not been noticed in previous research. This article redefines the meter reading issue as a hybrid procedure of regression and classification and creates a specific model. The resulting algorithm bespeaks the performance of measurement and recognition. The model consists of a hybrid regression and classification loss function and multibranch convolutional neural networks. We construct two data sets to validate the model: 1) normal data set and 2) carry data set, corresponding to classification and numeric accuracy dividedly. The experiments show that the model establishes new state-of-the-art metrics and achieves 0.5312 mean square error (MSE) on numerical precision and 99.98% accuracy on classification accuracy for 3-min training, by over 70 times on MSE and 0.11% on accuracy than the best performing model proposed by a recent study. Furthermore, a production-ready meter-reading system was deployed in a genuine factory with hybrid regression and classification multibranch convolutional neural networks, smart meter shells, and a set of cloud servers.
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