National Cheng-Kung University

Energy Management System Co., Ltd.

Chung-Ming Yang

Chih-Hsun Lin

Tai-Haur Kuo

Cheng-Hsien Su

Chung-Wei Li

Wen-Tzu Wu

Mei-Ling Tseng

An analog to digital converter includes a coarse ADC circuit composed of L offset-adjustable comparators and a fine ADC circuit composed of M offset-adjustable comparators. Each offset-adjustable comparator in the coarse ADC circuit has a constant embedded offset. Each offset-adjustable comparator in the fine ADC circuit has an adaptive embedded offset digitally determined by outputs of the coarse ADC circuit. With the constant and adaptive embedded offsets, the analog to digital converter requires no resistor ladder. Therefore, power consumption and area of the analog to digital converter is reduced, and faster conversion speed is achieved.

Analog to digital converter with offset-adjustable comparators

The present invention relates to a non-contact continuous type sensing device for a flowmeter and a sensing method thereof. The flowmeter includes a movable member that is connected to an operating member and that is driven by a fluid to move, thereby moving the operating member. A projector is mounted above the operating member and projects signals onto the operating member. At least two regions are defined in a side of the operating member facing the projector. At least one of the at least two regions includes metal material to reflect the signals projected thereon. A signal density in a space between the projector and the operating member is changed when the operating member is passing through the space, such that the projection power of the projector is affected to thereby sense a movement condition of the operating member and to thereby continuously know a flowing condition of the fluid.

Non-contact continuous type sensing device for a flowmeter and sensing method thereof

Growing community of inventors

Tainan, Taiwan

Chung-Ming Yang