  Intelligent drug delivery trolley is an advanced intelligent drug delivery
equipment. Compared with traditional manual drug delivery, it has higher drug
delivery efficiency and lower error rate. In this project, an intelligent drug
delivery car is designed and manufactured, which can recognize the road route
and the room number of the target ward through visual recognition technology.
The trolley selects the corresponding route according to the identified room
number, accurately transports the drugs to the target ward, and can return to
the pharmacy after the drugs are delivered. The intelligent drug delivery car
uses DC power supply, and the motor drive module controls two DC motors, which
overcomes the problem of excessive deviation of turning angle. The trolley line
inspection function uses closed-loop control to improve the accuracy of line
inspection and the controllability of trolley speed. The identification of ward
number is completed by the camera module with microcontroller, and has the
functions of adaptive adjustment of ambient brightness, distortion correction,
automatic calibration and so on. The communication between two cooperative drug
delivery vehicles is realized by Bluetooth module, which achieves efficient and
accurate communication and interaction. Experiments show that the intelligent
drug delivery car can accurately identify the room number and plan the route to
deliver drugs to the far, middle and near wards, and has the characteristics of
fast speed and accurate judgment. In addition, two drug delivery trolleys can
cooperate to deliver drugs to the same ward, with high efficiency and high
cooperation.
