{"id":19804,"date":"2025-07-01T03:19:11","date_gmt":"2025-07-01T03:19:11","guid":{"rendered":"https:\/\/www.kcsensor.com\/?p=19804"},"modified":"2025-10-16T01:54:52","modified_gmt":"2025-10-16T01:54:52","slug":"ultrasonic-level-meter-universal-power-adaptation-test-and-grounding-solutions","status":"publish","type":"post","link":"https:\/\/www.kcsensor.com\/ms\/ultrasonic-level-meter-universal-power-adaptation-test-and-grounding-solutions\/","title":{"rendered":"Pengukur Paras Ultrasonik, Penyesuaian Kuasa Universal, Ujian dan Penyelesaian Penyetelan Tanah"},"content":{"rendered":"

1. Latar Belakang Masalah: Anomali yang Disebabkan oleh Bekalan Kuasa Sejagat<\/strong><\/h4>\n\n\n\n

Semasa menggunakan meter paras ultrasonik siri KUS dengan bekalan kuasa sejagat 220V ke 24V\/12V, pelanggan menghadapi dua isu utama:<\/p>\n\n\n\n

    \n
  1. Kegagalan komunikasi bersiri (penghentian komunikasi RS485);<\/li>\n\n\n\n
  2. Penyimpangan pengukuran (jarak sebenar 3m menunjukkan fluktuasi sekitar 1m).
    Modul kuasa yang diuji:<\/li>\n<\/ol>\n\n\n\n
      \n
    • Modul 220V AC ke 24V DC<\/li>\n\n\n\n
    • Modul 220V AC ke 12V DC<\/li>\n<\/ul>\n\n\n\n
      \"\"<\/figure>\n\n\n\n

      2. Rekod Ujian Modul Kuasa DC 12V<\/strong><\/h4>\n\n\n\n

      Jadual 1: Langkah-langkah Ujian Modul Kuasa 12V dan Keputusan<\/strong><\/p>\n\n\n\n

      Langkah Ujian<\/th>Butiran Operasi<\/th>Keputusan Ujian<\/th><\/tr><\/thead>
      1. Pengukuran Ripple<\/td>Probe osiloskop yang disambungkan ke V+ dan V-, penghubung AC, had jalur lebar 20MHz<\/td>Gelombang ripple: 20~30mV gelombang segitiga, menolak ripple sebagai punca ralat pengukuran<\/td><\/tr>
      2. Ujian tidak berpijak<\/td>Modul kuasa tidak disalurkan ke bumi, sensor mengukur jarak sebenar 3m<\/td>Pengukuran berfluktuasi sekitar 1m, pelarasan ambang tidak sah; normal selepas beralih ke bekalan kuasa bangku.<\/td><\/tr>
      3. Ujian Berasaskan Bumi<\/td>Modul kuasa disalurkan ke bumi, kabel sensor dijauhkan daripada wayar 220V.<\/td>Pengukuran tepat (3m); ralat muncul semula apabila kabel berhampiran wayar 220V.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
      \"\"<\/figure>\n\n\n\n

      3. Ujian Modul Kuasa DC 24V dan Analisis Kegagalan Komunikasi<\/strong><\/h4>\n\n\n\n

      Jadual 2: Ujian Modul Kuasa 24V berbanding Isu Komunikasi<\/strong><\/p>\n\n\n\n

      Senario Ujian<\/th>Status Grounding<\/th>Prestasi Komunikasi RS485<\/th>Keputusan Pengukuran<\/th>Ciri-ciri Gelombang Gangguan<\/th><\/tr><\/thead>
      Ujian Standard<\/td>Tidak berbumi<\/td>Kegagalan komunikasi yang kerap, sambungan kadang-kadang<\/td>Ukuran tidak normal, pelarasan ambang tidak sah<\/td>Gangguan puncak-ke-puncak 13V, 50Hz (pengkopling bekalan utama)<\/td><\/tr>
      Ujian yang dioptimumkan<\/td>Grounded + GND disambungkan ke V-<\/td>Komunikasi yang stabil, tiada gangguan<\/td>Pengukuran tepat yang sepadan dengan jarak sebenar<\/td>Tiada gangguan yang jelas (Rajah 3)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

      Punca utama kegagalan komunikasi<\/strong>:<\/p>\n\n\n\n

        \n
      • Arus terapung V+ dan V- menghasilkan perbezaan potensi antara isyarat RS485 dan bumi, menyebabkan gangguan.<\/li>\n\n\n\n
      • Penyelesaian: Hubungkan GND secara singkat ke V- untuk menghapuskan perbezaan potensi (Rajah 4).<\/li>\n<\/ul>\n\n\n\n

        4. Empat Titik Kunci untuk Penyesuaian Kuasa Universal (Ringkasan)<\/strong><\/h4>\n\n\n\n
          \n
        1. Keutamaan Grounding<\/strong>Modul kuasa mesti dibumikan dengan baik untuk menyelaraskan V- dengan potensi bumi;<\/li>\n\n\n\n
        2. Isyarat Tanah Tinggi<\/strong>: Sambungkan GND ke V- untuk menyelesaikan perbezaan potensi RS485;<\/li>\n\n\n\n
        3. Pengasingan kabel<\/strong>: Pastikan jarak \u226530cm antara kabel sensor dan wayar 220V;<\/li>\n\n\n\n
        4. Amaran Keselamatan<\/strong>Larangkan kabel sensor daripada bersentuhan dengan voltan tinggi 220V untuk mengelakkan kejutan elektrik.<\/li>\n<\/ol>\n\n\n\n

          5. Perbandingan Bentuk Gelombang dan Penindasan Gangguan<\/strong><\/h4>\n\n\n\n

          (1)V+ ke bumi gangguan (tidak dibumikan)<\/strong>: 42.8V puncak-puncak, gangguan arus utama 50Hz ;<\/p>\n\n\n\n

          \"\"<\/figure>\n\n\n\n

          (2) isyarat RS485 (dibumikan)<\/strong>Gangguan dihapuskan, kestabilan komunikasi 100%. .<\/p>\n\n\n\n

            <\/ul>\n\n\n\n

            <\/p>","protected":false},"excerpt":{"rendered":"

            1. Problem Background: Anomalies Caused by Universal Power Supplies During the use of KUS series ultrasonic level meters with 220V to 24V\/12V universal power supplies, customers encountered two key issues: 2. 12V DC Power Module Test Record Table 1: 12V Power Module Test Steps and Results Test Step Operation Details Test Results 1. Ripple Measurement […]<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[114],"tags":[],"class_list":["post-19804","post","type-post","status-publish","format-standard","hentry","category-ultrasonic-sensor"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.kcsensor.com\/ms\/wp-json\/wp\/v2\/posts\/19804","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.kcsensor.com\/ms\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.kcsensor.com\/ms\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.kcsensor.com\/ms\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/www.kcsensor.com\/ms\/wp-json\/wp\/v2\/comments?post=19804"}],"version-history":[{"count":0,"href":"https:\/\/www.kcsensor.com\/ms\/wp-json\/wp\/v2\/posts\/19804\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.kcsensor.com\/ms\/wp-json\/wp\/v2\/media?parent=19804"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.kcsensor.com\/ms\/wp-json\/wp\/v2\/categories?post=19804"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.kcsensor.com\/ms\/wp-json\/wp\/v2\/tags?post=19804"}],"curies":[{"name":"Perancis","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}