A System for Locating Points, Lines, and Planes in Space
A microprocessor-based system for locating points, lines and planes within a cubic space 50 cm on a side is described and its performance evaluated. The technique is based on measuring the transit times of a shock wave produced by a small electric spark to each of 3 linear orthogonal microphones. Ar...
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| Veröffentlicht in: | IEEE transactions on instrumentation and measurement 1977-01, Vol.26 (1), p.5-10 |
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| container_title | IEEE transactions on instrumentation and measurement |
| container_volume | 26 |
| creator | Moritz, William E. Shreve, Peter L. |
| description | A microprocessor-based system for locating points, lines and planes within a cubic space 50 cm on a side is described and its performance evaluated. The technique is based on measuring the transit times of a shock wave produced by a small electric spark to each of 3 linear orthogonal microphones. Arranging 3 spark gaps in a plane permits the determination of the orientation of lines and planes in space. A technique is described to compensate for air temperature variations which have a direct effect on system repeatability. The effect of random room air currents has been studied. The linearity of the system was measured and found to contain an error of ±0.12 percent of full scale. Overall worst case (99.73-percent confidence interval) system accuracy was found to be 0.08 ± 0.96 mm. |
| doi_str_mv | 10.1109/TIM.1977.4314473 |
| format | Article |
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The technique is based on measuring the transit times of a shock wave produced by a small electric spark to each of 3 linear orthogonal microphones. Arranging 3 spark gaps in a plane permits the determination of the orientation of lines and planes in space. A technique is described to compensate for air temperature variations which have a direct effect on system repeatability. The effect of random room air currents has been studied. The linearity of the system was measured and found to contain an error of ±0.12 percent of full scale. Overall worst case (99.73-percent confidence interval) system accuracy was found to be 0.08 ± 0.96 mm.</description><subject>Circuits</subject><subject>Frequency measurement</subject><subject>Instruments</subject><subject>Libraries</subject><subject>Microphones</subject><subject>MOS capacitors</subject><subject>Probes</subject><subject>Shock waves</subject><subject>Sparks</subject><subject>Ultrasonic transducer arrays</subject><issn>0018-9456</issn><issn>1557-9662</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1977</creationdate><recordtype>article</recordtype><recordid>eNo9j1FLwzAUhYMoWKfvgi_5AbbeNGmTPo6hc1BxsPkc0ptEIls7mr7s35ux6dM5cM-5nI-QRwYFY9C8bFcfBWukLARnQkh-RTJWVTJv6rq8JhkAU3kjqvqW3MX4AwCyFjIjak43xzi5PfXDSNsBzRT6b7oeQj_FZ9qG3iUxvaXrnUmehp5uDgbdPbnxZhfdw0Vn5Ovtdbt4z9vP5Woxb3MsazblaMCXTvpKoUAE2ymGynohGZadRVelzV3p0krbcVQpaTuQ3CuVUsiRzwic_-I4xDg6rw9j2JvxqBnoE7lO5PpEri_kqfJ0rgTn3H_87_oLAepUbA</recordid><startdate>19770101</startdate><enddate>19770101</enddate><creator>Moritz, William E.</creator><creator>Shreve, Peter L.</creator><general>IEEE</general><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>19770101</creationdate><title>A System for Locating Points, Lines, and Planes in Space</title><author>Moritz, William E. ; Shreve, Peter L.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c261t-ca0f2e7f58c4cc0db81c8df471c2bdce5197b2e966db3c8e7fdb073f888dfc3c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1977</creationdate><topic>Circuits</topic><topic>Frequency measurement</topic><topic>Instruments</topic><topic>Libraries</topic><topic>Microphones</topic><topic>MOS capacitors</topic><topic>Probes</topic><topic>Shock waves</topic><topic>Sparks</topic><topic>Ultrasonic transducer arrays</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Moritz, William E.</creatorcontrib><creatorcontrib>Shreve, Peter L.</creatorcontrib><collection>CrossRef</collection><jtitle>IEEE transactions on instrumentation and measurement</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Moritz, William E.</au><au>Shreve, Peter L.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A System for Locating Points, Lines, and Planes in Space</atitle><jtitle>IEEE transactions on instrumentation and measurement</jtitle><stitle>TIM</stitle><date>1977-01-01</date><risdate>1977</risdate><volume>26</volume><issue>1</issue><spage>5</spage><epage>10</epage><pages>5-10</pages><issn>0018-9456</issn><eissn>1557-9662</eissn><coden>IEIMAO</coden><abstract>A microprocessor-based system for locating points, lines and planes within a cubic space 50 cm on a side is described and its performance evaluated. The technique is based on measuring the transit times of a shock wave produced by a small electric spark to each of 3 linear orthogonal microphones. Arranging 3 spark gaps in a plane permits the determination of the orientation of lines and planes in space. A technique is described to compensate for air temperature variations which have a direct effect on system repeatability. The effect of random room air currents has been studied. The linearity of the system was measured and found to contain an error of ±0.12 percent of full scale. Overall worst case (99.73-percent confidence interval) system accuracy was found to be 0.08 ± 0.96 mm.</abstract><pub>IEEE</pub><doi>10.1109/TIM.1977.4314473</doi><tpages>6</tpages></addata></record> |
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| identifier | ISSN: 0018-9456 |
| ispartof | IEEE transactions on instrumentation and measurement, 1977-01, Vol.26 (1), p.5-10 |
| issn | 0018-9456 1557-9662 |
| language | eng |
| recordid | cdi_ieee_primary_4314473 |
| source | IEEE Electronic Library (IEL) |
| subjects | Circuits Frequency measurement Instruments Libraries Microphones MOS capacitors Probes Shock waves Sparks Ultrasonic transducer arrays |
| title | A System for Locating Points, Lines, and Planes in Space |
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