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无针注射器的研制结合了物理、化学、生物、机械、计算机等多种学科,利用此项技术可以不使用传统注射器的针头,进行针对皮内、皮下等部位的给药,具有无痛、药物吸收好、操作方便、消除了交叉感染等诸多优点。安瓿瓶密封性的好坏是决定无针注射器性能的重要因素之一。本文主要设计了一种速度可调节并且可实时监测的无针注射系统。驱动器部分采用特制的音圈电机作为驱动安瓿的驱动器,硬件部分采样用STM32作为无针注射器的主控芯片,主要设计了无针注射器的发射、返回电路和加速度监测电路,利用高精度的加速度传感器ADXL001来测量音圈电机运动的速度,最后把加速度传感器采集到的数据发送给PC机,利用Matlab软件对采集到的数据进行分析和处理,来得到音圈电机运动的速度,然后利用相互的关系计算出安瓿中液体喷射的速度。
The development of needleless syringes combined with a variety of disciplines such as physics, chemistry, biology, machinery, computers, etc. This technique can be used for the intradermal, subcutaneous and other parts of the drug delivery without using the traditional syringe needle, with painless, drug Absorbed, easy to operate, eliminating cross-infection and many other advantages. Ampoule sealing is good or bad is to determine the performance of needle-free syringe one of the important factors. This paper mainly designed a speed-adjustable and real-time monitoring needleless injection system. The drive part uses a special voice coil motor as drive ampoule, the hardware part of the sample STM32 as a needle-free master controller chip, the main design of the needleless injector emission, return circuit and acceleration monitoring circuit, the use of high-precision acceleration sensor ADXL001 to measure the voice coil motor speed, and finally the accelerometer collected data sent to the PC, the use of Matlab software on the collected data analysis and processing to get voice coil motor speed, and then use the relationship between each other Calculate the speed of liquid injection in the ampoule.