A bubble detection system for propellant filling pipeline.

This paper proposes a bubble detection system based on the ultrasound transmission method, mainly for probing high-speed bubbles in the satellite propellant filling pipeline. First, three common ultrasonic detection methods are compared and the ultrasound transmission method is used in this paper. Then, the ultrasound beam in a vertical pipe is investigated, suggesting that the width of the beam used for detection is usually smaller than the internal diameter of the pipe, which means that when bubbles move close to the pipe wall, they may escape from being detected.

Automatic neutrophil nucleus lobe counting based on graph representation of region skeleton.

Abnormal neutrophil nucleus lobation (like left shift and right shift) helps to diagnose for some clinical conditions. Currently, quantification of it depends on the manual microscopic inspection of blood smears by clinicians. The quality of the manual inspection is extremely limited by the efficiency of clinicians and their medical background.

Note: Ultrasonic liquid flow meter for small pipes.

An ultrasonic flow meter for small pipes is presented. For metal pipe diameter smaller than 10 mm, clamp-on ultrasonic contrapropagation flow meters may encounter difficulties if cross talk or the short acoustic path contributes to large uncertainty in transit time measurement. Axial inline flow meters can avoid these problems, but they may introduce other problems if the transducer port is not properly positioned.

Robotic system for microsurgical keratoplasty.

Robotic system is developed to improve the effect of microsurgery for keratoplasty. Based on task and motion analysis in the surgery, type synthesis and size synthesis of robotic mechanism are performed to meet the requirements of surgical tasks. Force and position microsensors are integrated on the end-effector of microsurgical robot.