Abstract: Traditional wired communication methods in large industrial enterprises suffer from problems such as high requirements for transmission media and complex node addition and deletion. Wireless sensor networks (SNNs) are increasingly used for data acquisition and transmission in industrial environments. However, constructing energy-efficient SNNs that meet real-time control needs in industrial production and possess sufficient anti-interference capabilities in harsh physical environments have become key research areas. The G2NET industrial control sensor network system, independently developed by the Research and Development Center of the School of Computer Science at Guangdong University of Technology, can adaptively form topologies and add and delete nodes. The system addresses the real-time performance and reliability issues of wireless communication protocols and proposes solutions. Keywords: Sensor network; Hierarchical structure; Real-time performance; Reliability; G2NET Abstract: Traditional wired data transmission is highly complex, requiring precise node configuration and advanced transmission media. Despite this, wireless sensor networks still face challenges related to topological construction, real-time control, and anti-jamming. This article presents G2NET, an industrial control sensor network system. G2NET demonstrates structural adaptability and focuses on real-time issues and dependency, proposing solutions to reduce time delays and prevent jamming. Keywords: sensor network; hierarchy; real-time; dependency; G2NET. 0 Introduction In large industrial enterprises, data acquisition, transmission, storage, and processing are paramount to survival and development. Traditional industrial fieldbuses utilize wired communication, which imposes significant limitations. This makes the system highly dependent on the transmission medium, and hardware failures can severely impact data transmission and even cause network paralysis. Furthermore, the frequent changes in the number of nodes and the network's inability to adaptively form a topology make node deletion and addition extremely complex. Therefore, wireless sensor networks are used in industrial production. A good wireless sensor network protocol should not only solve the problems of wired communication, but also adapt to form a network topology and effectively transmit data; and ensure the real-time performance and reliability of the network during operation. Specifically, it is reflected in: (1) Network establishment and communication. First, the Directed[4] transmission method used by the initial wireless sensor network not only increased network latency, but also consumed a lot of energy when transmitting data, resulting in a short network lifespan. How to overcome this shortcoming and enable the network to adapt to form a topology is the first step to consider for wireless sensor protocols. Secondly, how to design a data transmission protocol so that the transmission can not only meet industrial requirements, but also effectively save energy is also a factor to consider in the design of wireless sensor protocols. (2) Real-time performance - reducing network latency. The hop-by-hop transmission method used by traditional sensor networks makes the network latency very uncertain. When transmitting data, the network latency of nodes far from the base station is several times greater than that of nodes close to the base station, which usually causes a large number of nodes far from the base station to die due to energy exhaustion. High-performance wireless sensor network protocols should overcome this factor and improve the system's performance in terms of real-time performance. (3) Reliability – Achieving Anti-interference. The anti-interference capability of wireless communication is reflected in two aspects: First, when a node in the network runs out of energy and dies, or when a new node is added to the network, the wireless sensor network should adaptively construct the topology through its own protocol; second, when the transmission between nodes is interrupted due to various objective reasons, resulting in data loss, the wireless sensor network should ensure that no data is lost and that the information can be accurately transmitted to the target node. The adaptive industrial control sensor network system G2NET is independently developed by the R&D Center of the School of Computer Science and Technology of Guangdong University of Technology, from the system's hardware platform and network protocol to its software implementation. It proposes solutions to the above three problems existing in the current wireless sensor network. G2NET includes two parts: the sensor hardware platform G2NOTE and the adaptive network protocol G2SNP. For details, please click: Implementation of an Industrial Control Sensor Network System