The internal temperature of the grain piles is an important indicator of moldy decay of the grain. Real-time monitoring of changes in the internal temperature of the grain piles is an important task in preventing grain mildew. In order to solve the problems of large-scale monitoring of outdoor bulk grain piles and difficulty in cable deployment, a wireless remote temperature monitoring system for bulk grain was designed. The field data collection station was powered by batteries, and a low-power working mode was designed and optimized. The system is of no wiring, low power consumption and easy maintenance, etc., The wireless communication between the host monitoring system and the terminal adopts a simplified Modbus command, which further reduces the wireless communication power consumption of the terminal. This system has achieved good results in practical applications.

Groundwater pollution has brought huge and far-reaching impacts to people's lives and production. How to monitor and prevent contaminated groundwater quality is a difficult problem that must be solved in front of environmental workers. Groundwater migration also affects the extent of groundwater pollution. According to the movement of groundwater and the migration of pollutants, prevention and control of groundwater pollution. By simulating groundwater movement, groundwater pollution is analyzed, and groundwater is remotely monitored by a monitoring well using a control system to monitor various parameters at a certain location. If a parameter exceeds the target range, water samples that exceed the standard are extracted and repaired. This paper simulates groundwater monitoring and repair using Kingview software and designs a control system to achieve remote control of groundwater monitoring and repair.

Taking the shell-and-tube heat exchanger as the research object, based on the conservation of energy, the dynamic mathematical model of the heat exchanger is established through the mechanism analysis method. Using configuration software to draw the simulation interface, the differential mathematical model is programmed. The dynamic response of the outlet temperature of the heat exchanger cold fluid is simulated during the flowrate and temperature of hot fluid change. By using the simulation program, the running parameters can be modified and adjusted in real time, and the on-line simulation of heat exchanger process is realized.

Heat exchangers are commonly used to exchange heat in industrial production. According to the law of energy conservation, the characteristics of shell-and-tube heat exchanger were analyzed and the dynamic model was established. The dynamic model can effectively simulate the change of outlet temperature of cold stream with the change of flowrate and inlet temperature of hot stream. The relationship curves of the dynamic model between temperature, flowrate and time were obtained through simulation experiments. By using the simulation results the heat transfer process of heat exchanger can be analyzed comprehensively, which provides a theoretical basis for the control and optimization of heat transfer process in engineering practice.