Detection System, Based On The Embedded System Of Plantar Pressure

Plantar pressure measurement system has been used in many fields such as medicine, biomechanics, Physical Rehabilitation. Plantar pressure the shows great value in scientific research as it can reflect the structure of human feet and physiology, pathology mechanical parameters of the whole body.In order to meet the requirements of accuracy and real-time,embedded operating system used in medical instruments,which also complied with the development tread and changes. Therefore, we designed a plantar pressure measurement system based onμC/OS-II in this paper. With the operating system being used, the system shows greater anti-jamming capability, and the system's accuracy, reliability, scalability are also improved.Main contents are as follow:1. This paper designed the sensors used in plantar pressure measurements system based on ICSensors 1451 Sensor Core. Data acquisition module is based on AD7705 DAC chip as the core, which is a 16-bit low-frequency measurement of dual-channel differential D converter.2. C8051F020,which is the central processing chip with many peripheral functions, is responsible for data acceptance, processing, sending.3. After transplantation ofμC/OS-II to C8051F020 , the system achieved multitasking mutually scheduling and improved the efficiency of the system . It completed the data transmission through the SPI bus and the serial communication interface.4. It used the LCD to display data, which is convenient and efficient to the display data changes.