Design Of Remote Liquid Level Monitoring System For Petroleum Fracturing Construction

In the field of oil exploration and production,the use of hydraulic fracturing technology in various oil fields is becoming more and more extensive.Because during the hydraulic fracturing construction,the working site needs to use a large number of liquid storage tanks to store the fracturing fluid,it is necessary to monitor the change of the liquid level in the liquid tank in real time to ensure smooth construction and prevent tanking or liquid shortage.In the past,manual measurement was used to monitor the liquid level of the liquid storage tank.However,this monitoring method has high labor intensity and low work efficiency,and there is still a great safety hazard.Therefore,it is necessary to design a remote liquid level monitoring system to monitor the liquid level in real time,and at the same time,to grasp the residual liquid volume of various types of liquids,which is convenient for overall management.In the comparison of key technologies,ultrasonic level measurement technology was selected for liquid level monitoring;wireless communication technology based on SI4438 RF chip was selected for wireless data communication.Due to the complex environment of the construction work site,the demand analysis was carried out for the actual application scenario of liquid level monitoring.Finally,low power consumption is the core of the system design.The liquid level monitoring system is divided into two parts: a liquid level monitoring node and a host computer,and data transmission is performed through a wireless communication module.The liquid level monitoring node includes a micro control unit,an ultrasonic liquid level measuring module,a power module,and a node wireless communication module.The main task of the upper computer is to configure the node to display information,wake up the specified liquid level monitoring node,receive the liquid level monitoring node liquid level and other information and display and alarm the liquid level information.In the wireless networking mode,the star topology is selected.Because the core of the system design is low power consumption,the focus is on the implementation of low power consumption in the micro control unit,low power design of the power module,low power consumption in battery power measurement,standby mode wakeup and liquid level monitoring node operation.Process design and other aspects are elaborated.In the liquid level measurement function,the processing of the echo signal by the ultrasonic receiving circuit is mainly described.At the same time,the node wireless module is designed,and the wireless module transmission mode is selected as a fixed point transmission.In the host computer,the design and workflow design of the communication protocol are mainly introduced.In order to meet the application requirements of the liquid level monitoring node,it is necessary to perform functional testing on the system.The test is divided into monitoring platform testing and hardware terminal testing.In the monitoring platform test,the function of the monitoring platform is tested.In the hardware terminal test,the measurement error of the ultrasonic ranging module is tested and analyzed.At the same time,the upper computer and multiple liquid level monitoring nodes are used for networking.test.Finally,the continuous working time of the liquid level monitoring node is measured and calculated.The test results show that the system meets the design requirements and is applied to the actual project,which has certain engineering application value.