Design Of Gastrointestinal Multi-source Information Acquisition System Based On Multi-sensor Data Fusion

In a broad sense,gastrointestinal motility disorder refers to all the gastrointestinal motility disorder caused by a variety of gastrointestinal symptoms as the clinical manifestations of the disease,while in a narrow sense,it mainly refers to gastrointestinal movement rhythm,frequency and luminal pressure caused by changes in the presence of no organic etiology of a disease.The disease is common in clinical practice,but there is no good method of diagnosis and treatment.Relevant studies have shown that the physiological and pathological conditions of patients with this disease can be indirectly reflected by some physiological information of the gastrointestinal tract,so it is of great significance to realize the reliable detection of the physiological information of the gastrointestinal tract for the study of the dynamic function of the gastrointestinal tract and related diseases.At present,there are many shortcomings in the methods of detecting physiological information of gastrointestinal tract.Many methods usually require procedures such as fasting and bowel cleansing,and are invasive,making it difficult for patients to accept the pain.Therefore,for a long time,there is no reliable and widely applicable clinical method to detect the physiological information of gastrointestinal tract,so there is no accurate diagnosis and treatment of gastrointestinal motility disorder.In view of this research status,in order to overcome the shortcomings of the current methods of gastrointestinal physiological information collection,in order to be able to carry out information collection in the normal physiological state of the human body and more effectively assist the diagnosis of gastrointestinal dynamic diseases,this paper designed a gastrointestinal multi-source information detection system based on multi-sensor data fusion.The data acquisition capsule of the system uses STM32F031 as the main control chip to realize the acquisition,processing and control of the required gastrointestinal information module.The MS5837 sensor was used to effectively collect the gastrointestinal pressure and temperature for the diagnosis and research of gastrointestinal dynamic disorders.Using nine axis motion sensor MPU9250 implementation of capsule three axis acceleration,three-axis angular velocity and three axial magnetic field value of the collection,through the gestures fusion algorithm to get the capsule in the gastrointestinal tract attitude information to analyze capsule on gastrointestinal motion state,study the dynamic performance of the gastrointestinal tract,and studied the position fusion algorithm in order to get stable posture information;CC1310 was used to transmit the data collected by the capsule to the in vitro data receiving module through wireless communication.The capsule is powered by a miniature button battery due to its limited size.In this paper,the capsule system is designed with low power consumption to extend its working time.The data receiving module of the system realizes the communication between the receiving data and the upper computer interface through the serial port.In this paper,the upper computer interface of the system is designed to display and process the collected data in real time.In this paper,the shape and size of the capsule were optimized,so that the capsule structure was small and the shape was reasonable,and the capsule could be easily swallowed and passed through the gastrointestinal tract smoothly.At the same time,a digestible dilatant was added to the outside of the capsule,so that the capsule could stay in the stomach for a certain period of time and meet the needs of the stomach data collection for different periods of time.In this paper,a systematic in vitro experiment is designed to test and evaluate the system’s function and accuracy.The system test results show that the system can accurately achieve the expected functions,stable and reliable.