ISSN:1040-0435    

DOI:10.1080/10400435.1990.10132141

出版商:Taylor & Francis Group    

年代:1990

数据来源: Taylor

摘要:

Myoelectric pickups (electrodes and processors for detecting the signal that is recorded as an electromyogram) are the most important human–machine interface for controlling powered upper-extremity prostheses. This article presents a simple explanation of myoelectric signal acquisition and then discusses how these signals are used to control the small motors in electric hands, elbows, wrist rotators, and other similar equipment. The less-familiar switch-based and proportional position-sensing controls are also explained. A complete listing of the major suppliers and products available will aid in understanding a discussion of the criteria for using external power instead of, or along with, body power to control and activate prosthetic function.

ISSN:1040-0435    

DOI:10.1080/10400435.1990.10132142

出版商:Taylor & Francis Group    

年代:1990

数据来源: Taylor

摘要:

Many severely speech-impaired individuals have a need or desire to maintain the capability for computerized speech generation while performing a variety of other computer-supported tasks such as word processing, financial analysis, or database management. Criteria are presented for augmentative communication systems that both incorporate a personal computer (PC) and provide capabilities for voice output to satisfy this requirement. Current approaches to such systems are categorized and reviewed in light of these criteria. A new method is then described in which word processing or other appropriate PC software is used for speech production, providing a natural integration of written and spoken communication. The approach separates the computer access and voice output functions to allow great flexibility in the choice of an alternative access system. This flexibility combined with appropriate exploitation of PC software features has the potential to yield a high communication rate as well as maximum compatibility with application software.

ISSN:1040-0435    

DOI:10.1080/10400435.1990.10132143

出版商:Taylor & Francis Group    

年代:1990

数据来源: Taylor

摘要:

A three-dimensional cervical spine range-of-motion system was developed using an electromagnetic tracking system for data collection and a personal computer for analysis and graphic representation of the data. A test was designed to investigate the sensitivity of the electromagnetic device to the proximity of metal. It was found that position errors could be kept below 0.5 cm, and rotation errors could be kept below 1.3°, if all metal was at least 33 cm from the source and sensor. The sensitivity of the system to metal should not cause serious problems in the typical clinical environment if simple precautions are taken.

ISSN:1040-0435    

DOI:10.1080/10400435.1990.10132144

出版商:Taylor & Francis Group    

年代:1990

数据来源: Taylor

ISSN:1040-0435    

DOI:10.1080/10400435.1990.10132145

出版商:Taylor & Francis Group    

年代:1990

数据来源: Taylor

ISSN:1040-0435    

DOI:10.1080/10400435.1990.10132146

出版商:Taylor & Francis Group    

年代:1990

数据来源: Taylor

ISSN:1040-0435    

DOI:10.1080/10400435.1990.10132147

出版商:Taylor & Francis Group    

年代:1990

数据来源: Taylor