{"id":2972,"date":"2018-03-08T17:11:36","date_gmt":"2018-03-09T01:11:36","guid":{"rendered":""},"modified":"2024-05-08T14:18:28","modified_gmt":"2024-05-08T21:18:28","slug":"2972","status":"publish","type":"post","link":"https:\/\/www.vernier.com\/til\/2972","title":{"rendered":"Is there a way to calibrate a Motion Detector?"},"content":{"rendered":"<p>Generally, calibrations are not required; therefore, most motion detectors don&#8217;t support calibration. <\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:85%\">\n<h3 class=\"wp-block-heading\">Calibrate a Go Direct Motion Detector<\/h3>\n<p>Only the Go Direct Motion Detector can be calibrated. A one-point calibration, based on a measured distance, is applied. The new calibration is stored on the sensor.<\/p>\n<ul class=\"wp-block-list\">\n<li><strong>Graphical Analysis\/Graphical Analysis Pro<\/strong>\u2014Click or tap the sensor meter and choose <strong>Calibrate<\/strong>.<\/li>\n<li><strong>LabQuest App<\/strong>\u2014Click or tap the sensor meter and choose <strong>Calibrate<\/strong>. (LabQuest 2 and LabQuest 3 only.)<\/li>\n<li><strong>Logger <em>Pro<\/em><\/strong>\u2014This sensor is not supported in Logger <em>Pro<\/em>.<\/li>\n<li><strong>DataQuest App<\/strong>\u2014This sensor cannot be calibrated using the DataQuest.<\/li>\n<li><strong>EasyData<\/strong>\u2014This sensor is not supported in EasyData.<\/li>\n<\/ul>\n<\/div>\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:15%\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"828\" src=\"https:\/\/www.vernier.com\/til\/wp-content\/uploads\/sites\/2\/2020\/03\/3269-gdx-md.jpg\" alt=\"\" class=\"wp-image-6213\" srcset=\"https:\/\/www.vernier.com\/til\/wp-content\/uploads\/sites\/2\/2020\/03\/3269-gdx-md.jpg 800w, https:\/\/www.vernier.com\/til\/wp-content\/uploads\/sites\/2\/2020\/03\/3269-gdx-md-580x600.jpg 580w, https:\/\/www.vernier.com\/til\/wp-content\/uploads\/sites\/2\/2020\/03\/3269-gdx-md-768x795.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n<\/div>\n<\/div>\n<div style=\"height:25px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<h3 class=\"wp-block-heading\">Alternatives to Calibration <\/h3>\n<style>.kt-accordion-id2972_d7a629-f4 .kt-accordion-inner-wrap{column-gap:var(--global-kb-gap-md, 2rem);row-gap:8px;}.kt-accordion-id2972_d7a629-f4 .kt-accordion-panel-inner{border-top-width:1px;border-right-width:1px;border-bottom-width:1px;border-left-width:1px;border-color:#f79b2e;padding-top:10px;padding-right:10px;padding-bottom:10px;padding-left:10px;}.kt-accordion-id2972_d7a629-f4 > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header{border-top-color:#cdcdc9;border-right-color:#cdcdc9;border-bottom-color:#cdcdc9;border-left-color:#cdcdc9;border-top-width:1px;border-right-width:1px;border-bottom-width:1px;border-left-width:1px;border-top-left-radius:2px;border-top-right-radius:2px;border-bottom-right-radius:2px;border-bottom-left-radius:2px;background:#cce8ea;font-size:18px;line-height:24px;color:#007377;padding-top:10px;padding-right:14px;padding-bottom:10px;padding-left:14px;}.kt-accordion-id2972_d7a629-f4:not( .kt-accodion-icon-style-basiccircle ):not( .kt-accodion-icon-style-xclosecircle ):not( .kt-accodion-icon-style-arrowcircle )  > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap .kt-blocks-accordion-icon-trigger:after, .kt-accordion-id2972_d7a629-f4:not( .kt-accodion-icon-style-basiccircle ):not( .kt-accodion-icon-style-xclosecircle ):not( .kt-accodion-icon-style-arrowcircle )  > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap .kt-blocks-accordion-icon-trigger:before{background:#007377;}.kt-accordion-id2972_d7a629-f4:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-blocks-accordion-icon-trigger{background:#007377;}.kt-accordion-id2972_d7a629-f4:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-blocks-accordion-icon-trigger:after, .kt-accordion-id2972_d7a629-f4:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-blocks-accordion-icon-trigger:before{background:#cce8ea;}.kt-accordion-id2972_d7a629-f4 > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header:hover, \n\t\t\t\tbody:not(.hide-focus-outline) .kt-accordion-id2972_d7a629-f4 .kt-blocks-accordion-header:focus-visible{color:#007377;background:#e6e6e4;border-top-color:#66bac0;border-right-color:#66bac0;border-bottom-color:#66bac0;border-left-color:#66bac0;}.kt-accordion-id2972_d7a629-f4:not( .kt-accodion-icon-style-basiccircle ):not( .kt-accodion-icon-style-xclosecircle ):not( .kt-accodion-icon-style-arrowcircle ) .kt-accordion-header-wrap .kt-blocks-accordion-header:hover .kt-blocks-accordion-icon-trigger:after, .kt-accordion-id2972_d7a629-f4:not( .kt-accodion-icon-style-basiccircle ):not( .kt-accodion-icon-style-xclosecircle ):not( .kt-accodion-icon-style-arrowcircle ) .kt-accordion-header-wrap .kt-blocks-accordion-header:hover .kt-blocks-accordion-icon-trigger:before, body:not(.hide-focus-outline) .kt-accordion-id2972_d7a629-f4:not( .kt-accodion-icon-style-basiccircle ):not( .kt-accodion-icon-style-xclosecircle ):not( .kt-accodion-icon-style-arrowcircle ) .kt-blocks-accordion--visible .kt-blocks-accordion-icon-trigger:after, body:not(.hide-focus-outline) .kt-accordion-id2972_d7a629-f4:not( .kt-accodion-icon-style-basiccircle ):not( .kt-accodion-icon-style-xclosecircle ):not( .kt-accodion-icon-style-arrowcircle ) .kt-blocks-accordion-header:focus-visible .kt-blocks-accordion-icon-trigger:before{background:#007377;}.kt-accordion-id2972_d7a629-f4:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-accordion-header-wrap .kt-blocks-accordion-header:hover .kt-blocks-accordion-icon-trigger, body:not(.hide-focus-outline) .kt-accordion-id2972_d7a629-f4:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-accordion-header-wrap .kt-blocks-accordion-header:focus-visible .kt-blocks-accordion-icon-trigger{background:#007377;}.kt-accordion-id2972_d7a629-f4:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-accordion-header-wrap .kt-blocks-accordion-header:hover .kt-blocks-accordion-icon-trigger:after, .kt-accordion-id2972_d7a629-f4:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-accordion-header-wrap .kt-blocks-accordion-header:hover .kt-blocks-accordion-icon-trigger:before, body:not(.hide-focus-outline) .kt-accordion-id2972_d7a629-f4:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-accordion-header-wrap .kt-blocks-accordion-header:focus-visible .kt-blocks-accordion-icon-trigger:after, body:not(.hide-focus-outline) .kt-accordion-id2972_d7a629-f4:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-accordion-header-wrap .kt-blocks-accordion-header:focus-visible .kt-blocks-accordion-icon-trigger:before{background:#e6e6e4;}.kt-accordion-id2972_d7a629-f4 .kt-accordion-header-wrap .kt-blocks-accordion-header:focus-visible,\n\t\t\t\t.kt-accordion-id2972_d7a629-f4 > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header.kt-accordion-panel-active{color:#f79b2e;background:#444444;border-top-color:#f79b2e;border-right-color:#f79b2e;border-bottom-color:#f79b2e;border-left-color:#f79b2e;}.kt-accordion-id2972_d7a629-f4:not( .kt-accodion-icon-style-basiccircle ):not( .kt-accodion-icon-style-xclosecircle ):not( .kt-accodion-icon-style-arrowcircle )  > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header.kt-accordion-panel-active .kt-blocks-accordion-icon-trigger:after, .kt-accordion-id2972_d7a629-f4:not( .kt-accodion-icon-style-basiccircle ):not( .kt-accodion-icon-style-xclosecircle ):not( .kt-accodion-icon-style-arrowcircle )  > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header.kt-accordion-panel-active .kt-blocks-accordion-icon-trigger:before{background:#f79b2e;}.kt-accordion-id2972_d7a629-f4:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-blocks-accordion-header.kt-accordion-panel-active .kt-blocks-accordion-icon-trigger{background:#f79b2e;}.kt-accordion-id2972_d7a629-f4:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-blocks-accordion-header.kt-accordion-panel-active .kt-blocks-accordion-icon-trigger:after, .kt-accordion-id2972_d7a629-f4:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-blocks-accordion-header.kt-accordion-panel-active .kt-blocks-accordion-icon-trigger:before{background:#444444;}@media all and (max-width: 767px){.kt-accordion-id2972_d7a629-f4 .kt-accordion-inner-wrap{display:block;}.kt-accordion-id2972_d7a629-f4 .kt-accordion-inner-wrap .kt-accordion-pane:not(:first-child){margin-top:8px;}}<\/style>\n<div class=\"wp-block-kadence-accordion alignnone\">\n<div class=\"kt-accordion-wrap kt-accordion-id2972_d7a629-f4 kt-accordion-has-5-panes kt-active-pane-0 kt-accordion-block kt-pane-header-alignment-left kt-accodion-icon-style-xclose kt-accodion-icon-side-right\" style=\"max-width:none\">\n<div class=\"kt-accordion-inner-wrap\" data-allow-multiple-open=\"false\" data-start-open=\"none\">\n<div class=\"wp-block-kadence-pane kt-accordion-pane kt-accordion-pane-3 kt-pane2972_eb9cba-24\">\n<div class=\"kt-accordion-header-wrap\"><button class=\"kt-blocks-accordion-header kt-acccordion-button-label-show\"><span class=\"kt-blocks-accordion-title-wrap\"><span class=\"kt-blocks-accordion-title\">Offset the sensor reading<\/span><\/span><span class=\"kt-blocks-accordion-icon-trigger\"><\/span><\/button><\/div>\n<div class=\"kt-accordion-panel kt-accordion-panel-hidden\">\n<div class=\"kt-accordion-panel-inner\">\n<p>It is possible to apply an offset to the motion detector reading as readings can vary based on the interface. Typically, if an offset is needed, it is only 1 or 2 cm. This is similar to a one-point calibration.<\/p>\n<ul class=\"wp-block-list\">\n<li><strong>Graphical Analysis\/Graphical Analysis Pro<\/strong>\u2014Use a calculated column to apply a constant offset to all motion detector position readings.<\/li>\n<li><strong>LabQuest App<\/strong>\u2014Use a calculated column to apply a constant offset to all motion detector position readings.<\/li>\n<li><strong>Logger <em>Pro<\/em><\/strong>\u2014Choose <strong>Set Up Sensors > Show All Interfaces<\/strong> from the Experiment menu, click the Motion Detector image in DIG 1 or DIG 2, then select <strong>Set Offset<\/strong>.<\/li>\n<li><strong>DataQuest App<\/strong>\u2014Use a calculated column to apply a constant offset to all motion detector position readings.<\/li>\n<li><strong>EasyData App<\/strong>\u2014You cannot easily apply an offset to sensor data in EasyData.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"wp-block-kadence-pane kt-accordion-pane kt-accordion-pane-1 kt-pane2972_b108cf-99\">\n<div class=\"kt-accordion-header-wrap\"><button class=\"kt-blocks-accordion-header kt-acccordion-button-label-show\"><span class=\"kt-blocks-accordion-title-wrap\"><span class=\"kt-blocks-accordion-title\">Zero the sensor reading<\/span><\/span><span class=\"kt-blocks-accordion-icon-trigger\"><\/span><\/button><\/div>\n<div class=\"kt-accordion-panel kt-accordion-panel-hidden\">\n<div class=\"kt-accordion-panel-inner\">\n<p>You can zero the motion detector by placing the target at the desired origin, and choosing zero within the software. <\/p>\n<ul class=\"wp-block-list\">\n<li><strong>Graphical Analysis\/Graphical Analysis Pro<\/strong>\u2014Click or tap the sensor meter and choose <strong>Zero<\/strong>.<\/li>\n<li><strong>LabQuest App<\/strong>\u2014Click or tap the sensor meter and choose <strong>Zero<\/strong>.<\/li>\n<li><strong>Logger <em>Pro<\/em><\/strong>\u2014<strong>Zero<\/strong> is found in the experiment menu.<\/li>\n<li><strong>DataQuest App<\/strong>\u2014<strong>Zero<\/strong> is found in <strong>Setup Sensors<\/strong>, in the Experiment menu.<\/li>\n<li><strong>EasyData App<\/strong>\u2014<strong>Zero<\/strong> is in the Setup menu.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"wp-block-kadence-pane kt-accordion-pane kt-accordion-pane-2 kt-pane2972_22104e-a7\">\n<div class=\"kt-accordion-header-wrap\"><button class=\"kt-blocks-accordion-header kt-acccordion-button-label-show\"><span class=\"kt-blocks-accordion-title-wrap\"><span class=\"kt-blocks-accordion-title\">Reverse the sensor reading<\/span><\/span><span class=\"kt-blocks-accordion-icon-trigger\"><\/span><\/button><\/div>\n<div class=\"kt-accordion-panel kt-accordion-panel-hidden\">\n<div class=\"kt-accordion-panel-inner\">\n<p>The direction of the coordinate system can be reversed so that values increase as a target moves toward the motion detector instead of away.<\/p>\n<ul class=\"wp-block-list\">\n<li><strong>Graphical Analysis\/Graphical Analysis Pro<\/strong>\u2014Click or tap the sensor meter and choose <strong>Reverse<\/strong>.<\/li>\n<li><strong>LabQuest App<\/strong>\u2014Click or tap the sensor meter and choose <strong>Reverse<\/strong>.<\/li>\n<li><strong>Logger <em>Pro<\/em><\/strong>\u2014Choose <strong>Set Up Sensors > Show All Interfaces<\/strong> from the Experiment menu, click the Motion Detector image in DIG 1 or DIG 2, then choose <strong>Reverse Direction<\/strong>.<\/li>\n<li><strong>DataQuest App<\/strong>\u2014<strong>Reverse<\/strong> is found in <strong>Setup Sensors<\/strong>, in the Experiment menu.<\/li>\n<li><strong>EasyData App<\/strong>\u2014<strong>Reverse<\/strong> is not supported in EasyData.<\/li>\n<\/ul>\n<p><em><strong>Note: <\/strong>Using the combination of Zero and Reverse allows you to do things like measure motion from a point not at the detector. For example, you can point the detector downward toward the floor. Reverse and Zero with nothing between the detector and the floor. Now, the detector will report position above the floor, with up as positive and zero at the floor.<\/em><\/p>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"wp-block-kadence-pane kt-accordion-pane kt-accordion-pane-4 kt-pane2972_d05755-68\">\n<div class=\"kt-accordion-header-wrap\"><button class=\"kt-blocks-accordion-header kt-acccordion-button-label-show\"><span class=\"kt-blocks-accordion-title-wrap\"><span class=\"kt-blocks-accordion-title\">Temperature Compensation<\/span><\/span><span class=\"kt-blocks-accordion-icon-trigger\"><\/span><\/button><\/div>\n<div class=\"kt-accordion-panel kt-accordion-panel-hidden\">\n<div class=\"kt-accordion-panel-inner\">\n<p>Since the speed of sound is temperature dependent, motion readings will vary slightly by temperature. This is a very small correction, and is almost never important.<\/p>\n<ul class=\"wp-block-list\">\n<li><strong>Graphical Analysis\/Graphical Analysis Pro<\/strong>\u2014This is only possible with a Go Direct Motion Detector set up to use the <strong>Motion with TC<\/strong> sensor channel.<\/li>\n<li><strong>LabQuest App<\/strong>\u2014This is only possible with a Go Direct Motion Detector set up to use the <strong>Motion with TC<\/strong> sensor channel.<\/li>\n<li><strong>Logger <em>Pro<\/em><\/strong>\u2014Choose <strong>Set Up Sensors > Show All Interfaces<\/strong> from the Experiment menu, click the Motion Detector image in DIG 1 or DIG 2, then choose <strong>Set Temperature<\/strong>. (<em><strong>Note:<\/strong> Temperature compensation is automatic when using a Go!Motion or CBR 2 connected directly via USB.<\/em>)<\/li>\n<li><strong>DataQuest App<\/strong>\u2014This is only possible with a Go Direct Motion Detector set up to use the <strong>Motion with TC<\/strong> sensor channel.<\/li>\n<li><strong>EasyData App<\/strong>\u2014Temperature compensation is not supported in EasyData.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"wp-block-kadence-pane kt-accordion-pane kt-accordion-pane-5 kt-pane2972_948d3c-61\">\n<div class=\"kt-accordion-header-wrap\"><button class=\"kt-blocks-accordion-header kt-acccordion-button-label-show\"><span class=\"kt-blocks-accordion-title-wrap\"><span class=\"kt-blocks-accordion-title\">Minimum Distance from the Motion Detector<\/span><\/span><span class=\"kt-blocks-accordion-icon-trigger\"><\/span><\/button><\/div>\n<div class=\"kt-accordion-panel kt-accordion-panel-hidden\">\n<div class=\"kt-accordion-panel-inner\">\n<p>All motion detectors have a minimum working distance. Make sure your object does not get closer than that minimum distance. These distances are sensor dependent and apply to all software.<\/p>\n<ul class=\"wp-block-list\">\n<li><strong>15 cm<\/strong>\u2014Go Direct Motion <strong>Motion (Cart)<\/strong> sensor channel, Go!Motion, CBR 2, and Motion Detector 2<\/li>\n<li><strong>25 cm<\/strong>\u2014Go Direct Motion <strong>Motion <\/strong>and <strong>Motion with TC<\/strong> sensor channels<\/li>\n<li><strong>50 cm<\/strong>\u2014Older motion detectors<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div style=\"height:25px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<div style=\"height:25px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<h3 class=\"wp-block-heading\">Additional Information:<\/h3>\n<ul class=\"wp-block-list\">\n<li><a href=\"\/til\/18404\/\">Go Direct Sensor always reads zero (or some other constant value).<\/a><\/li>\n<li><a href=\"\/til\/3269\/\">Which Motion Detector model do I have?<\/a><\/li>\n<li><a href=\"\/til\/1374\/\">Motion Detector Troubleshooting and FAQs<\/a><\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>Generally, calibrations are not required; therefore, most motion detectors don&#8217;t support calibration. Calibrate a Go Direct Motion Detector Only the Go Direct Motion Detector can&#8230;<\/p>\n","protected":false},"author":43901,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[],"tags":[1416,690,233,923,922,5011,7,925,8],"class_list":["post-2972","post","type-post","status-publish","format-standard","hentry","tag-calibrate","tag-calibration","tag-cbr","tag-cbr2","tag-gdx-md","tag-go-direct-motion","tag-go-mot","tag-gomotion","tag-md-btd"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/posts\/2972","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/users\/43901"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/comments?post=2972"}],"version-history":[{"count":0,"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/posts\/2972\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/media?parent=2972"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/categories?post=2972"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/tags?post=2972"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}