National Formosa University

Tzu-Chi Chan

Hsin-Hsien Lin

Shang-Hong Wu

An environment monitoring system includes N sensors, a server and a monitoring device, where N&#x2265;3. The sensors respectively generate multiple pieces of sense data related to a monitoring area. The server determines whether at least three of the pieces of sense data are abnormal, and generates position data based on the at least three pieces of abnormal sense data when the determination is affirmative. The monitoring device includes a body that is movable in the monitoring area, an image capturing module and a control module. The control module controls the body to move to a position corresponding to the position data, and the image capturing module captures an image at said position.

Environment monitoring system

A self-balancing line shaft of a machine tool includes a spindle device, a cutter tool holder and at least one balancing assembly. The spindle device includes a spindle extending along and rotatable about an axis, and at least one precision lock nut threadedly engaged with and rotated with the spindle. The cutter tool holder is coaxially connected and rotated with the spindle. The balancing assembly includes an annular groove formed in one of the precision lock nut and the cutter tool holder and extending along a circle path surrounding the axis, and a plurality of weight members disposed in the annular groove to be moved in a direction opposite to a rotation unbalance during rotation of the spindle such that the center of mass of the whole rotating system is close to the axis.

Growing community of inventors

Huwei, Taiwan

Tzu-Chi Chan