Adaptive and Scalable Electronic Instrument RDTU System

Yefei Xia

doi:10.63313/AERpc.9115

Authors

Yefei Xia School of Information Technology and Engineering, Tianjin University of Technology and Education, Tianjin 300350, China Author

DOI:

https://doi.org/10.63313/AERpc.9115

Keywords:

Intelligent Water Meter, Open-Source DTU, Modbus RTU, Plug-and-Play, Edge Gateway, Industrial Internet of Things (IIoT)

Abstract

Traditional water meter monitoring systems have obvious drawbacks including low data acquisition efficiency, delayed equipment status monitoring and high operation and maintenance costs. This paper designs and implements an intelligent water meter monitoring system based on open-source Data Transfer Unit (DTU) and Modbus RTU protocol, which solves the pain points of manual meter reading and closed commercial DTU deployment in smart water supply scenarios. The front-end visual platform is developed with Vue 3 and Element Plus, while the back-end takes Python as the core development language, following standardized coding specifications defined in PEP 8. The system integrates PySerial serial communication, Modbus RTU message parsing, Redis memory cache and MySQL persistent database, forming a closed-loop data collection and management architecture of "DTU—Business Platform—Frontend Display", which conforms to the layered industrial IoT monitoring platform design paradigm. This paper focuses on developing core functions including plug-and-play protocol bridging for DTU, three-level cache scheduling, incremental data synchronization and Role-Based Access Control (RBAC) permission management scheme. Compatible with RS232 and CAN multi-channel communication interfaces, the system features high concurrency, low latency and strong scalability. It can be deployed in various smart water supply scenarios and provides a complete engineering transformation scheme for intelligent upgrading of stock metering equipment in Industrial Internet of Things (IIoT).

References

[1] Modbus Organization, Modbus Application Protocol Specification v1.1b3, (2012) [EB/OL]. Available: http://www.modbus.org.

[2] C. A. Rocha, R. M. Vicentini, J. R. D. Santos, et al., “A Long Term Evolution CAT-M Based Gateway for Serial Modbus Communication in Industrial Internet of Things Systems,” in 2026 IEEE International Conference on Industrial IoT, IEEE, (2026), pp. 1–6.

[3] W. Wang, Q. Li, “Design and Implementation of Low-Power DTU Based on ESP32,” Internet of Things Technologies, vol.13, no.5, pp.45–48, (2023).

[4] H. Demir, “Power Consumption Analysis of ESP32 and Arduino Nano for Low-Power Applications,” in 2025 9th International Symposium on Innovative Approaches in Smart Technologies, IEEE, (2025), pp. 112–117.

[5] S. Zhao, Q. H. Zhang, Q. J. Zhao, “Enhancing Bidirectional Modbus TCP ↔ RTU Gateway Performance: A UDP Mechanism and Markov Chain Approach,” Sensors, vol.25, no.12, p.6036, (2025).

[6] W. B. Wang, X. Zhang, Y. Zhao, Y. Shen, C. Luo, “Gateway Design of Internet of Things Based on Modbus Protocol,” Microcontrollers & Embedded Systems, vol.20, no.11, pp.59–62, (2020).

[7] Q. Zhang, Y. M. Jiang, P. Yu, “Research on the Multi-meter Integrated Copy System Based on M-Bus,” Electric Technology, no.6, pp.1–3, (2025).

[8] Y. Du, Z. L. Wang, C. C. Li, “Research and Design of Communication Interface Converter for Multi-meter Integration,” Electrical Applications, vol.41, no.8, pp.56–60, (2022).

[9] Z. K. Ouyang, Q. Xu, S. S. Zhao, “Design of Multi-meter Integration Scheme Based on Electricity Information Acquisition System,” in 2018 IEEE International Conference on Energy Internet, IEEE, (2018), pp. 782–786.

[10] Redis Labs, Redis Data Structures: Hashes and Sorted Sets, (2025) [EB/OL]. Available: https://redis.io.

[11] Y. Song, F. Li, “Design and Implementation of Access Control Under B/S System Based on RBAC,” Software Guide, vol.7, pp.28–30, (2009).

[12] X. Liu, S. Liu, J. Wu, “High-speed end-to-edge data caching and forwarding architecture based on field programmable gate array,” ETRI Journal, vol.47, no.5, pp.946–958, (2025).

[13] E. Sisinni, U. Saif, G. Emiliano, et al., “Survey of industrial communication technologies for IIoT energy monitoring,” IEEE Internet of Things Journal, vol.11, no.7, pp.6123–6132, (2024).

[14] Vue.js Team, Vue 3 Documentation, (2025) [EB/OL]. Available: https://vuejs.org.

[15] Python Software Foundation, PEP 8 – Style Guide for Python Code, (2001) [EB/OL]. Available: https://peps.python.org/pep-008/.