Analog VLSI Sensory Processing

模拟 VLSI 传感处理

• 批准号: 9502307
• 负责人: John Harris
• 金额: $ 11.29万
• 依托单位: University of Florida
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-08-01 至 1999-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9502307&HistoricalAwards=false
• 关键词: Analog; VLSI; Sensory; Processing

This research deals with the implementation of continuous-time analog VLSI chaps for processing of sensory signals. Two specific analog sensors are being developed: 1) a single-chip visual time- to-contact sensor that reports the amount of time until the chip collides with an oncoming obstacle (assuming constant relative motion), and, 2) a sound localization chip that computes the direction (in two-dimensions) of a sound source using signals from two microphones. Though these projects may appear to be unrelated, the proposed solutions using adaptive analog computation in CMOS hardware lead to many common problems that must be solved. By providing a cross-fertilization between auditory and visual processing, it is hoped that the underlying biological computational primitives and neuronal representations will be discovered. The resulting low-power analog devices have obvious applications in such areas as collision warning sensors for intelligent automobiles and improved, low-power hearing aids. The educational plan at both the undergraduate and graduate level has a strong interdisciplinary emphasis. Too often students are taught to specialize in a narrow area and are consequently unable to relate their work to an overall system objective. Teaching objectives are: 1) to stress the interdisciplinary nature of real- world systems, and 2) to introduce students to problem solving techniques for real-world signal-processing applications. In existing classes, the use of laboratories and computer experiments where students can do hands-on experimentation with concepts is emphasized. New courses at the undergraduate and graduate levels that give students more exposure to real-world experimentation in laboratories will be designed.

本研究是针对感官信号处理的连续时间模拟VLSI CHAPS的实现。正在开发两个特定的模拟传感器：1)单芯片可视接触时间传感器，报告芯片与迎面而来的障碍物相撞的时间量(假设相对运动恒定)，以及2)声音定位芯片，使用来自两个麦克风的信号计算声源的方向(二维)。虽然这些项目可能看起来并不相关，但在CMOS硬件中使用自适应模拟计算的解决方案导致了许多必须解决的常见问题。通过提供听觉和视觉处理之间的交叉受精，人们希望发现潜在的生物计算原语和神经元表征。由此产生的低功耗模拟设备在智能汽车的碰撞警告传感器和改进的低功耗助听器等领域有着明显的应用。本科生和研究生的教育计划都有很强的跨学科重点。太多时候，学生被教导要专攻一个狭窄的领域，因此无法将他们的工作与整个系统目标联系起来。教学目标是：1)强调真实世界系统的跨学科性质，2)向学生介绍用于真实世界信号处理应用的问题解决技术。在现有的课程中，强调使用实验室和计算机实验，学生可以在其中进行概念的动手实验。将设计新的本科和研究生课程，让学生更多地接触实验室的真实世界实验。