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In fields such as manufacturing and agriculture, manual methods are generally used to count materials such as hardware parts and seeds, which had problems such as slow speed, low efficiency, and low accuracy, and a lot of pressure was put on people. Based on machine vision and motion control, a uniform material counting equipment system was designed. The equipment uses a two-stage conveyor belt for material transportation, and vibration frequency control and speed control of materials of different specifications were achieved. Because of application of precision motion control technology, the camera collects the image of the material and identifies the material to be inspected, and automatically counts the quantity of the material by calculating the area of the material. The test was implemented with screws, hole gaskets, soy, jujubes and other materials, and the results show that: materials with a size of 2mm-20mm can be detected; the detection accuracy rate is 100%.the system has realized high-speed, high-efficiency, high-accuracy automatic counting, and has good application value.

This paper introduces an arm microcontroller STM32F407 as a core control unit of a six-degree-of-freedom manipulator control system (MCU). A 32-bit MCU series chip is selected to be implemented in the system that sends signals to 32-bit MCU via the upper computer software, which further controls the rotation of the steering gear on each joint of the manipulator; thus, the rotation control of a manipulator is implemented. The entire system consisted of a set of components, includes the main body of a manipulator, a steering gear, a servo drive circuit, a serial port communication circuit, a single chip microcomputer circuit, a PC upper computer software, etc. The upper computer sends a steering gear angle data signal to the 32 MCU through the serial communication circuit. The single-chip microcomputer first takes the received corner signal for data processing converting the data signal to the 32-bit MCU. The corner signal is divided into many small signals by a differential interpolation algorithm. Combined with a single-chip timer, these tiny signals are transformed into a PWM wave with a specific width that can be rotated by a steering gear and then sent to the steering gear to reach the target at a steady rate. The control of the manipulator is implemented by the movement of six steering gears.