Forum Discussion
Honored ContributorKit Laser distance meter ep3c5e and stm32f407 50M
I work on a project "distance meter kit " Here is the link. http://asv-lab.ru/blog/fazovyj_lazernyj_dalnomer_asv50m/2015-06-26-12 There are videos. vide1<a href="https://youtu.be/lnkyciw8i4e" target="_blank" style="color: rgb(0, 0, 102); text-decoration: none; font-family: tahoma, sans-serif; font-size: 10.6666669845581px;" data-cke-saved-href="https://youtu.be/lnkyciw8i4e">[video]https://youtu.be/lnkyciw8i4e[/video] (https://youtu.be/lnkyciw8i4e) video2<a href="https://youtu.be/iv_juur2ceg" style="color: rgb(0, 0, 102); text-decoration: none; font-family: tahoma, sans-serif; font-size: 10.6666669845581px;">[video]https://youtu.be/iv_juur2ceg[/video] (https://youtu.be/iv_juur2ceg) In the comments under the video link to the file excel. This file is recorded measurement phase at a frequency of 45 MHz, 30 MHz, 3 MHz. Measurement of the phase increments of 100 millimeters. From the values of the phase, we can calculate the distance. 45 MHz Phase 0-360 = 3,75M. 30 MHz Phase 0-360 = 5M. 3 MHz Phase 0-360 = 50M I have a problem at the time of the transition phase from 0 to 360 or 360 to 0. It is not always properly defined range 0-3,75m or 3,75-7,5m Help calculate. thank.
1 Reply
Altera_Forumsorry for my bad English.
I corrected the algorithm. The phase measurement 45 MHz and 3 MHz at a distance of 30 meters 1 step 20mm 1500 points. 3 MHz for calculating the multiplier i.ph_long = ph45Mhz+360*i The source code below how to do this correctly?
File with the measurement results. https://drive.google.com/file/d/0b3blsgr5w0ttwm1meni4ehctnku/view?usp=sharingif ((phase3Mhz_deg > 33000) || (phase3Mhz_deg < 300)) { coefmux = 1; } else if ((phase3Mhz_deg >= 300) && (phase3Mhz_deg < 1100)) { if (phase45Mhz_deg > 18000) { coefmux = 1; } else { coefmux = 2; } } else if ((phase3Mhz_deg >= 1100) && (phase3Mhz_deg < 3100)) { coefmux = 2; } else if ((phase3Mhz_deg >= 3100) && (phase3Mhz_deg < 4100)) { if (phase45Mhz_deg > 18000) { coefmux = 2; } else { coefmux = 3; } } else if ((phase3Mhz_deg >= 4100) && (phase3Mhz_deg < 5100)) { coefmux = 3; } else if ((phase3Mhz_deg >= 5100) && (phase3Mhz_deg < 6400)) { if (phase45Mhz_deg > 18000) { coefmux = 3; } else { coefmux = 4; } } else if ((phase3Mhz_deg >= 6400) && (phase3Mhz_deg < 8300)) { coefmux = 4; } else if ((phase3Mhz_deg >= 8300) && (phase3Mhz_deg < 8900)) { if (phase45Mhz_deg > 18000) { coefmux = 4; } else { coefmux = 5; } } else if ((phase3Mhz_deg >= 8900) && (phase3Mhz_deg < 10700)) { coefmux = 5; } else if ((phase3Mhz_deg >= 10700) && (phase3Mhz_deg < 11500)) { if (phase45Mhz_deg > 18000) { coefmux = 5; } else { coefmux = 6; } } else if ((phase3Mhz_deg >= 11500) && (phase3Mhz_deg < 13000)) { coefmux = 6; } else if ((phase3Mhz_deg >= 13000) && (phase3Mhz_deg < 14000)) { if (phase45Mhz_deg > 18000) { coefmux = 6; } else { coefmux = 7; } } else if ((phase3Mhz_deg >= 14000) && (phase3Mhz_deg < 15500)) { coefmux = 7; } else if ((phase3Mhz_deg >= 15500) && (phase3Mhz_deg < 16500)) { if (phase45Mhz_deg > 18000) { coefmux = 7; } else { coefmux = 8; } } else if ((phase3Mhz_deg >= 16500) && (phase3Mhz_deg < 18000)) { coefmux = 8; } else if ((phase3Mhz_deg >= 18000) && (phase3Mhz_deg < 19300)) { if (phase45Mhz_deg > 18000) { coefmux = 8; } else { coefmux = 9; } } else if ((phase3Mhz_deg >= 19300) && (phase3Mhz_deg < 20400)) { coefmux = 9; } else if ((phase3Mhz_deg >= 20400) && (phase3Mhz_deg < 21700)) { if (phase45Mhz_deg > 18000) { coefmux = 9; } else { coefmux = 10; } } else if ((phase3Mhz_deg >= 21700) && (phase3Mhz_deg < 23000)) { coefmux = 10; } else if ((phase3Mhz_deg >= 23000) && (phase3Mhz_deg < 24500)) { if (phase45Mhz_deg > 18000) { coefmux = 10; } else { coefmux = 11; } } else if ((phase3Mhz_deg >= 24500) && (phase3Mhz_deg < 26500)) { coefmux = 11; } else { coefmux = 0; } tempdouble = 36000.0 * (coefmux - 1.0) + phase45Mhz_deg; ph_long = floor(tempdouble);
