## 1 Introduction  
As a major agricultural country, wheat, rice, and corn are also known as China's three major staple crops. The planting area is very large. Mechanization of grain crops is the only way. It is also an important measure to increase farmers' income, improve farmers' quality of life, and build modern agriculture [1]. As the core technical equipment of the crop production process, the combine harvester is an important agricultural machinery equipment to realize the comprehensive, high quality and efficient development of the whole agricultural production. It plays a very important role in reducing the labor intensity of farmers, reducing production costs, and improving production efficiency [2]. At this stage, the mechanization of harvesting of staple crops in China has basically been realized. However, with the development of Chinese agricultural machinery production and the influence of the cross-regional \"south and north war\", the demand for combine harvesters has gradually developed from small to medium and large. The combine harvester has a complex design and harsh working conditions. The state of the job object and the workloadfluctuate greatly, and the failure rate is high. To keep abreast of the current health status of the combine harvester, it is urgent to monitor the working conditions and fault warnings of its key components. It can diagnose the state of the machine properly and find the machine fault in time to give an alarm [3,4]. In addition, the number of combine harvesters is large, and they are widely distributed. The effective remote operation and maintenance management of combine harvesters play an important role in improving machine efficiency and increasing the service life of each component. It is of great significance to promote the automation, intelligence, and modernization of combine harvesters in China and to realize agricultural modernization [5,6]. The equipment remote operation and maintenance technology use the Internet of Things, cloud technology, wireless communication [7], neural network, and other technologies to collect equipment operation data. It realizes the functions of fault diagnosis, fault prediction, component status assessment, and operation maintenance. It has become an important means of value-added services in the equipment manufacturing industry. The development of remote operation and maintenance technology is key to improving the application of equipment, especially for the complex operation equipment of combine harvesters. The research on the intelligent control, real-time positioning, and remote-monitoring technology of the combine harvester in foreign developed countries started earlier. The high degree of intelligence and automation of the combine harvester had been realized [8, 9, 10]. [PERSON], the American company, developed the MyJohnDeene product and service platform. It was used to improve the efficiency and time of machine operation, logistics management, and agricultural decision-making, etc. It had the functions of online query of agricultural machinery operation position, statistical analysis of agricultural machinery operation data information, agricultural machinery operation efficiency calculation and operation cost accounting, etc. It realized the precise management of agricultural machinery operation [11,12]. CLAAS, the German company, applied the Trimble network smart farm system in agricultural production. It adopted wireless communication technology to realize the mutual communication between agricultural machinery and agricultural machinery and agricultural machinery and remote management center. This formed an agricultural Internet of Things system, which could efficiently manage agricultural machinery operations, agricultural machinery mobilization, etc. [13,14]. The intelligent cabs of the TUCANO series harvesters of the German CLASS Company and the 30 series harvesters of the Dutch Keith Company were equipped with electronic-monitoring display screens.