AnasayfaAlt İçeriklerSık Sorulan Sorular: Kodları Okuma Sorunlarını Giderme

Sık Sorulan Sorular: Kodları Okuma Sorunlarını Giderme

Sık Sorulan Sorular: Kodları Okuma Sorunlarını Giderme

Bu bölümde, barkod okuyucunun bir barkodu veya 2D kodu okumada karşılaştığı sorunların nedenleri ve çözümleri ele alınmıştır.

Okuma Kararlılığının Sağlanması — Okuma Sorunlarının Nedenleri ve Çözümleri

Kod okumada sorun mu yaşıyorsunuz? Bu faydalı Soru-Cevap kılavuzu, yaygın okuma sorunları için çeşitli nedenler ve çözümler sunar

Barkod Okuma Sorunları

A.01 Termal baskı kafasının değiştirilmesi gerekiyor olabilir.

Sağdaki şekil 1 numaralı barkoddan bir çizgi eksik basıldığını gösterir.

Bu durum, yanlış okumalara sebep olabilen “eksik noktalar” olarak adlandırılır.

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A.02 Barkod okuyucu, hedefe dik bir açıyla yerleştirilebilir.

Barkoda dik bir açıyla yerleştirilmiş bir barkod okuyucu, yanlış okumaya neden olan yoğun bir yansımaya maruz kalır (speküler/aynasal ışın). Bundan dolayı barkod okuyucu düzgün bir şekilde çalışmaz.

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A.03 Parlak barkodlar yansıyan ışını iyi bir şekilde yaymadıklarından dolayı okunmaları zordur.

Lazer ışını, parlak bir yüzeye sahip barkodlardan speküler/aynasal olarak yansır. Bu tarz barkodlar yansımayı neredeyse hiç dağıtmadığından barkod okuyucu için tarama yapmak çok zordur.

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A.04 Barkod etiketi üstündeki quiet zone çok dar olabilir.

Metal ışınları dağıtmadığından, barkod okuyucu etiketi siyah olarak tarar. Bundan dolayı, (görselde gösterildiği gibi) barkodun quiet zone kısmı çok dar ve okunamaz haldedir.

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A.05 Sorunun nedeni ortam ışığı olabilir.

Güneş ışığı okuyucuya yöneldiğinde dengesiz okumalara neden olabilir.

Çözümler hakkında detaylı bilgiye ulaşmak için PDF’i indirebilirsiniz.

A.06 UPC/EAN ve KOD 128 dört tip çubuğa ve boşluk genişliğine sahiptir

Dot Matrix baskının doğası gereği, her bir çubuğun genişliği çubuğun uzunluğuna göre çeşitlenir. Bazı pozisyonlar daha geniş olurken (1) bazıları daha dar olur (2). Barkodu okunamaz kılabilecek bu tarz genişlikleri ayırt etmek zor olabilir.

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A.07 Kartonun uyuşmazlığı, kararsız okumalara neden olabilir.

Barkod, çubuklardan (baskı) ve boşluklardan (arka plan) oluşur. Hem baskı hem de arka plan, dengesiz okumalara neden olabilecek tutarsız yüzeyler nedeniyle değişebilir.

Çözümler hakkında detaylı bilgiye ulaşmak için PDF’i indirebilirsiniz

2D Kodu Okuma Sorunları

A.01  Quiet zone çok dar olabilir.

Dar quiet zone: 2D kodda bulunan tek beyaz alandır.
Sınırlardan etkilenir: Kodun etrafı siyah bir kenarlıkla çevrilidir.
Quiet zone bulunmaz: Kod, etiketin kenarına kadar uzanır.

Çözümler hakkında detaylı bilgiye ulaşmak için PDF’i indirebilirsiniz.

A.02 Hizalama deseni hasar görmüş olabilir.

DataMatrix kodları, ilk önce hizalama deseni olarak adlandırılan L şeklindeki çerçevenin bulunmasıyla okunur. Bu nedenle, hizalama deseni hasarlıysa kod okunamaz.

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A.03  Renk kontrastı nedeniyle okumak zor olabilir.

2D kod okuyucular, baskı deseni ile arka plan arasındaki kontrasta göre tarama yapar. Bu nedenle, kontrastı ayırt etmek yeteri kadar kolay değilse tarama yapılamaz.

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A.04 Okuyucu uygun bir açıyla yerleştirilmemiş olabilir veya polarize filtreli bir okuyucuya ihtiyaç duyulabilir

Bazı 2D kod okuyucular, eğimli bir açıyla yerleştirilebilecek şekilde tasarlanmışken bazıları hedefe dik açıda kurulmalıdır. Düzgün bir şekilde yerleştirilmezse, dengesiz bir tarama işlemi yapar.

Çözümler hakkında detaylı bilgiye ulaşmak için PDF’i indirebilirsiniz.

A.05 Sorunun nedeni ortam ışığı olabilir.

2D kod okuyucular, tarama yapabilmek için aydınlatmayı kamera gibi kullanır. Fakat bazı durumlarda, hedef veya okuyucu çok fazla ortam ışığına maruz kaldığında, parlaklık eşitlenemez ve dengesiz bir tarama yapmaya sebep olur.

Çözümler hakkında detaylı bilgiye ulaşmak için PDF’i indirebilirsiniz.

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Barkod / 2D Kod Doğrulaması
ISO/IEC 15415 ve ISO/IEC TR 29158 Arasındaki Doğrulamada Önemli Farklılıklar

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2D Profilers give width, height, and volume of sealant beads inline without touching a part.

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