Detailed Information

An Ultrasound ASIC With Universal Energy Recycling for > 7-m All-Weather Metamorphic Robotic Vision

Cited 3 time in Web of Science Cited 4 time in Scopus

Wu, Han; Zhang, Miaolin; Shao, Zhichun; Guo, Jiaqi; Ng, Kian Ann; Lin, Liwei; Yoo, Jerald

Issue Date
Institute of Electrical and Electronics Engineers
IEEE Journal of Solid-State Circuits, Vol.57 No.10, pp.3036-3047
An ultrasound ASIC that enables compact, 3-D nonvisual robotic navigation for >7-m is presented. The proposed ultrasound ASIC mitigates the limitations of camera vision navigation systems in all-weather, low-power, low-cost aspects. The ASIC integrates TX and RX paths for 64 channels, enabling four-directional navigation using 4 x 4 ultrasound arrays. The proposed universal energy recycling transmitter (UERTX) driver circuit, which can drive both single-ended and differential transducers, reduces energy consumption by 44% compared with non-overlap switching-assisted conventional class-D ultrasonic drivers, addressing large TX power consumption. In addition, the on-chip programmable power management unit (PMU) eliminates off-chip supplies and reduces off-chip passive components for compact system miniaturization. Furthermore, PMU enables the tuning of TX driving amplitude for the range of 6-14 Vpp allowing wide detection range adaptability. Fabricated in 0.18 mu m 1P6M standard CMOS, the ASIC system measures 25 mm(2) and has >7-m obstacle detection capability while consuming 4.3 mW/channel. The proposed ultrasound ASIC system is demonstrated with a four fps, 3-D navigating metamorphic robot, which consumes 0.28 W, occupies 125 cm(3), and weighs similar to 100 g.
Files in This Item:
There are no files associated with this item.
Appears in Collections:

Related Researcher

Yoo, Jerald Image

Yoo, Jerald유담
  • College of Engineering
  • Department of Electrical and Computer Engineering
Research Area Biomedical Applications, Energy-Efficient Integrated Circuits


Item View & Download Count

  • mendeley

Items in S-Space are protected by copyright, with all rights reserved, unless otherwise indicated.