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Imaging applications of millimeter wave sensors in robotics and road traffic

Imaging applications of millimeter wave sensors in robotics ...

引用

IEEE 1995 NTC Microwave systems conference INTC 95)/1995 International Microwave Symposium and Exhibition

作者： DETLEFSEN, JB TECH UNIV MUNICH LEHRSTUHL HOCHFREQUENZTECHD-80290 MUNICHGERMANY

ISBN: (纸本)078032594X

Many tasks that can be fulfilled by millimeter wave sensors are in principle the solution to 2-D or 3-D imaging problems. After a recapitulation of the basics of obtaining 3-D resolution in spatial frequency domain the various methods of obtaining longitudinal resolution such as pulse, pulsed FM, FMCW and PN modulation are discussed as well as principles to achieve lateral resolution in one or two dimensions. The corresponding methods of mechanical beam scanning, phased array antennas, wavefront reconstruction or digital beam forming are reviewed with respect to sensor applications. advanced methods of using a transmitter antenna diversity to efficiently use a given array of a limited number of receiver antennas are described according to this scheme. Most of the principles are underlined by examples of systems which have been realized at TUM. All systems parameters related to spatial resolution can be efficiently characterized and compared in spatial frequency domain.

关键词： Antenna phased arrays

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Smart-pixel array processors based on optimal cellular neural networks for space sensor applications

Smart-pixel array processors based on optimal cellular neura...

引用

Proceedings of the 1995 IEEE International conference on Computer Design: VLSI in Computers & Processors

作者： Fang, Wai-Chi Sheu, Bing J. Venus, Holger Sandau, Rainer California Inst of Technology Pasadena United States

A smart-pixel cellular neural networks with hardware annealing capability, digitally programmable synaptic weights, and multisensor parallel interface has been under development for advanced space sensor applications. The smart-pixel CNN architecture is a programmable multi-dimensional array of optoelectronic neurons which are locally connected with their local neurons and associated active-pixel sensors. Integration of the neuroprocessor in each processor node of a scalable multiprocessor system offers orders-of-magnitude computing performance enhancements for on-board real-time intelligent multisensor processing and control tasks of advanced small satellites. The smart-pixel CNN operation theory, architecture, design and implementation, and system applications are investigated in details. The VLSI implementation feasibility was illustrated by a prototype smart-pixel 5×5-neuroprocessor array chip of active dimensions 1380 μm × 746 μm in a 2-μm CMOS technology.

关键词： Parallel processing systems

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DiveTracker: Characteristics and applications of an advanced dive mission control system

DiveTracker: Characteristics and applications of an advanced...

引用

OCEANS 95 MTS/IEEE conference on Challenges of Our Changing Global Environment

作者： Flagg, M DESERT STAR SYST MOSS LANDINGCA 95039

ISBN: (纸本)0933957149

DiveTracker, a highly versatile dive mission control system, is presented. DiveTracker offers an integrated solution for tasks ranging from diver, ROV, and AUV tracking and navigation to communication, telemetry, observation recording, sensor data acquisition, precision surveying and underwater computing tasks. It is a wireless system, relying on sonar for navigation and communication functions. The system is fully software programmable and is easily adapted to suit specialized requirements. This paper explores the DiveTracker architecture and characteristics. Performance parameters are reviewed and current installations and applications are explored.

关键词： Control systems

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Real-time digital adaptive tracking controller for a DC motor

Real-time digital adaptive tracking controller for a DC moto...

引用

conference Record of the 1995 IEEE Industry applications 30th IAS Annual Meeting. Part 3 (of 3)

作者： Hwang, Santai Purdue Univ Fort Wayne United States

The objective of this design is to implement an accurate and cost effective adaptive tracking controller for a DC motor using an 80C196kr microcontroller system. The on-chip embedded functions, optical quadrature encoder and a Pulse Width Modulated (PWM) waveform generator, are used to measure motor positions and generate DC voltages to drive a DC motor respectively. A homing routine that incorporates a photo electric sensor is used to position the motor at a reference point. Users communicate with the system through a 4×4 matrix keypad and 20×2 LCD display or through a PC. The experimental results have shown the validity of this simple microcontroller-based digital control system. This system is performed on a real-time basis, and the control law can be easily replaced by any advanced control laws without changing the hardware setup.

关键词： Digital control systems

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Piezoelectric composite panels for underwater acoustic control 15

Piezoelectric composite panels for underwater acoustic contr...

引用

Proceedings of the 1995 ASME Design Engineering Technical conference. Part C

作者： Gentilman, Richard L. Bowen, Leslie J. Corsaro, Robert D. Houston, Brian H. Materials Systems Inc Littleton United States

ISBN: (纸本)9780791897652

Large area 1-3 composite piezoelectric transducer panels have been produced by Materials systems Inc. (MSI). These SonoPanels measure 250 × 250 mm and have excellent response as underwater actuators as well as sensors. Piezocomposite panel manufacturing has been facilitated by an injection molding technology for fabricating net-shape lead zirconate titanate (PZT) ceramic preforms. An array of fifteen 250 × 250 mm 1-3 composite actuator panels, integrated with surface mounted pressure and velocity sensors, has been attached to a steel backing structure. The array has been evaluated for underwater active surface control applications at the Naval Research Laboratory. sensor-actuator coupling was investigated, with good agreement between calculated and measured performance.

关键词： Piezoelectric transducers

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A low-cost, composite sensor array combining ultrasonic and infrared proximity sensors

A low-cost, composite sensor array combining ultrasonic and ...

引用

Proceedings 1995 IEEE/RSJ International conference on Intelligent Robots and systems. Human Robot Interaction and Cooperative Robots

作者： A.M. Sabatini V. Genovese E. Guglielmelli A. Mantuano G. Ratti P. Dario Scuola Superiore Sant Anna Advanced Robotics Technology and Systems Laboratory Pisa Italy

In this paper we describe our approach to the design of proximity sensor arrays. Each sensing element of the proximity sensor array is a composite sensor, i.e. a sensor which is composed of an in-air ultrasonic rangefinder and an infrared detector. This sensor arrangement is capable, in principle, to achieve a perception of the explored objects that is not necessarily limited to their geometrical properties (size, shape and location relative to the sensor); possibly, the perception can be extended to other relevant features. In this paper, we show that, in principle, a sort of perception of the surface reflectance (the color) is achievable. The concept of the proposed sensor array spans a wide range of potential applications in flexible industrial automation, service robotics and autonomous mobility. The system described, in particular, is intended for providing an advanced wheelchair with the navigational capabilities required for improving the driving skills of disabled users.

关键词： sensor arrays sensor phenomena and characterization Infrared sensors Robotics and automation Infrared detectors Shape Reflectivity Service robots Mobile robots Robot sensing systems

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System overview and applications of a panoramic imaging perimeter sensor

System overview and applications of a panoramic imaging peri...

引用

International Carnahan conference on Security Technology

作者： D.A. Pritchard Sandia National Laboratories Albuquerque NM USA

This paper presents an overview of the design and potential applications of a 360-degree scanning, multi-spectral intrusion detection sensor. This moderate-resolution, true panoramic imaging sensor is intended for exterior use at ranges from 50 to 1500 meters. This advanced Exterior sensor (AES) simultaneously uses three sensing technologies (infrared, visible, and radar) along with advanced data processing methods to provide low false-alarm intrusion detection, tracking, and immediate visual assessment. The images from the infrared and visible detector sets and the radar range data are updated as the sensors rotate once per second. The radar provides range data with one-meter resolution. This sensor has been designed for easy use and rapid deployment to cover wide areas beyond or in place of typical perimeters, and tactical applications around fixed or temporary high-value assets. AES prototypes are in development. applications discussed in this paper include replacements, augmentations, or new installations at fixed sites where topological features, atmospheric conditions, environmental restrictions, ecological regulations, and archaeological features limit the use of conventional security components and systems.

关键词： Infrared detectors Radar imaging Optical imaging Intrusion detection Radar tracking Infrared image sensors Image sensors Infrared sensors Data processing Radar detection

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Imaging applications of millimeter wave sensors in robotics and road traffic

Imaging applications of millimeter wave sensors in robotics ...

引用

IEEE NTC Microwave systems conference, conference Proceedings

作者： J.B. Detlefsen Lehrstuhl fur Hochfrequenztechnik Technische Universitat Munchen Munich Germany

关键词： Image sensors Robot sensing systems Spatial resolution Pulse modulation sensor arrays Millimeter wave technology Frequency domain analysis Antenna arrays Phased arrays Receiving antennas

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Synthesized passive feedback control of sensor-rich smart structures-experimental results

Synthesized passive feedback control of sensor-rich smart st...

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IEEE conference on Control Technology and applications (CCTA)

作者： P. Akella J.T. Wen Control Laboratory for Mechanical Structures Department of Electrical Computer and Systems EngineeringCenter for Advanced Technology in Automation Robotics & Manufacturing Rensselaer Polytechnic Institute RPI Troy NY USA

Passivity based controllers are used in structural control due to their inherent robustness properties. These controllers require sensor/actuator collocation. In this paper, we consider the design of a "squaring down" matrix which renders a system passive by using a linear combination of all collocated and non-collocated sensor/actuator pairs. The design uses experimental transfer functions and does not require the knowledge of the system model. The problem of finding the squaring down matrix is cast as a solution to a set of linear matrix inequalities (LMIs) subject to some additional performance considerations. The design procedure of the squaring down matrix assumes that velocity information is available from the sensors which is not generally the case. We show that the squaring down matrix can be implemented without the use of such velocity information. We provide experimental results gathered from the single link flexible beam setup in the C/sub La/MS laboratory at RPI to show that implementation of passive loops without velocity measurements provides very good results.

关键词： Feedback control Linear matrix inequalities Intelligent sensors Control system synthesis Robust control sensor systems Hydraulic actuators Transfer functions Laboratories Economic indicators

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advanced MMIC components for Ka-band communications systems. A survey

Advanced MMIC components for Ka-band communications systems....

引用

IEEE NTC Microwave systems conference, conference Proceedings

作者： J.-M. Dieudonne B. Adelseck P. Narozny H. Dambkes Daimler Benz Aerospace Ulm Germany

A number of civil applications such as motion sensors and communications systems are planned to use the Ka-band frequency range. An MMIC chip set for the realization of the millimeter-wave front-end has been developed. The key MMIC circuit functions for Ka-band communication systems have been fabricated. Low noise amplifiers, a medium power amplifier, mixers and a dielectric resonator oscillator (DRO) have been developed using a common 0.25 /spl mu/m PMHFET technology allowing the future integration of several key components on a single chip. A voltage controlled oscillator has been realized in a GaInP-GaAs HBT technology for improvement of the phase noise performance. Low noise Schottky diode upconverter and downconverter are also available in 0.25 /spl mu/m MESFET technology with buried n/sup +/ layer.

关键词： MMICs Low-noise amplifiers Voltage-controlled oscillators sensor systems and applications Frequency Millimeter wave circuits Millimeter wave communication Millimeter wave technology Circuit noise Dielectrics

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