Nantong University

Ping Lu

Liang Hua

Yisheng Huang

Juping Gu

Ling Jiang

Zeguang Zhang

Yuxuan Ge

Wenbo Su

Chunkai Yan

Jiahan You

An automatic detection and recovery device for residual agricultural mulch film, and a method of using the device, comprising a quadcopter, a wheeled robot (), and a host computer (); the quadcopter is provided with a controller (), a near infrared water content analyzer, and a WiFi module that are used to measure water content in soil and communicate with the host computer; the wheeled robot () comprises a water sprinkling device (), a soil grabbing device (), a sifting device (), a delivery device (), a recognition device (), and a sorting device ().

Automatic detection and recovery device for residual agricultural mulch film, and method of using said device

A composite motor having high-precision positioning, comprising: a housing (), a rough positioning assembly, a hollow output shaft (), a fine positioning assembly, a power switching apparatus and a controller (). A stepper motor () in the rough positioning assembly is responsible for rough positioning of the composite motor, an annular travelling wave ultrasonic motor in the fine positioning assembly is responsible for tail end fine positioning of the composite motor, and the controller () implements power output switching between the annular travelling wave ultrasonic motor and the stepper motor (). The composite motor effectively solves the problem that annular travelling wave ultrasonic motors which operate continuously for a long time have a short service life, and ensures high-precision positioning while also extending motor service life.

Composite motor having high-precision positioning

Growing community of inventors

Nantong, China

Ping Lu