Many customers can be confused about the scanning capabilities of 2D scanners, in particular the difference between global and roll-up shutters, which have different operating principles and application scenarios. In this article, we will explore the difference between global and roll-up scanning so that you can gain insight into the differences when working with scanners.
1. Introduction to Global Scan Mode
Global scan mode, also known as continuous scan mode, is a common bar code scanning mode. In global scan mode, the barcode scanner continuously emits light and scans the surrounding barcodes at a high frequency. As soon as a barcode enters the scanner's effective range, it is automatically detected and decoded.
The benefits of global scan mode include
Fast: The information on the barcode can be quickly captured by continuous scanning without additional operations.
Wide range of applications: Global scan mode is applicable to various types and sizes of barcodes, including linear barcodes and 2D codes, etc.
2. Introduction to the roll-up scanning mode
Roll-up scanning mode is another common barcode scanning mode, also known as single scanning mode. In roll-up scanning mode, the bar code scanner must be manually triggered to scan, it will emit light once and read the information on the bar code. The user must point the barcode at the scanner and press the scan button or trigger to perform the scan.
The benefits of the roll-up scanning mode include
Great control: Users can manually trigger the scan as needed to prevent misuse.
Low power consumption: Compared to global scanning, roll-up scanning reduces power consumption by emitting light only when needed.
High accuracy: Manually triggered scans can be more accurately aligned with the barcode to avoid misidentification.
Roll-up scanning is ideal for scenarios that require precise scan timing or where power consumption is critical, such as quality control and inventory management.
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3. Difference between Global Scan and Roll Up Scan
3.1 Scanning mode
The operating principle of global scanning: In global scanning mode, the bar code scanner continuously emits light and scans the surrounding bar codes at a high frequency. Regardless of when the barcode enters the scanner's effective range, it is automatically detected and decoded.
How roll-up scanning works: In roll-up scanning mode, the barcode scanner must be manually triggered to scan. The user aligns the barcode with the scanner, presses the scan button or trigger, and then linearly scans the black and white stripes or squares on the barcode to decode and obtain the barcode information.
3.2 Scanning efficiency
Advantage of Global Scanning: Global scanning mode has a high scanning speed and can quickly capture the information on the barcode without any additional operation. It is suitable for scenarios where a large number of barcodes need to be scanned quickly and continuously.
Advantage of roll-up scanning:Roll-up scanning mode requires manual triggering of scanning, which allows users to precisely control the scanning timing as needed to prevent misuse. It is suitable for scenarios that require manual control of the scanning process and higher accuracy requirements.
3.3 Read Capability
Applicable scenarios for Global Scanning: Global scanning mode is applicable to different types and sizes of barcodes, including linear barcodes and 2D codes. Regardless of when the barcode enters the scanner's effective range, it can be automatically detected and decoded. It is suitable for scenarios where a large number of different barcodes need to be scanned quickly.
Roll-up scanning scenarios: The roll-up scanning mode is suitable for scenarios where the scanning timing needs to be precisely controlled or where power consumption is a requirement. As the scan must be manually triggered, the barcode can be more accurately aligned to avoid misidentification. Suitable for quality control, inventory management and other scenarios where manual intervention is required.
4.Application industry comparison
A. Retail Industry
Scanning method: In the retail industry, the global scanning method is common. The barcode scanner can quickly identify the barcode or 2D code of the goods, which helps retailers to record and sell the goods information quickly.
Scanning efficiency: The global scanning mode can quickly scan the barcode of a large number of goods, improving the efficiency of cashier. At the same time, inventory can be tracked and merchandise flow can be managed through barcode information.
B. Logistics Industry
Scanning mode: Logistics industry often use global scanning mode. The barcode scanner can scan the barcode on the goods, identify and record the information of the goods, which is convenient for tracking and managing the flow of goods.
Scanning efficiency: global scanning mode can quickly scan barcodes of goods of different sizes, improving logistics efficiency. The scanner can quickly record information about the goods, reducing manual operations and data entry errors.
C. Medical Industry
Scanning mode: Roll-up scanning mode is often used in the medical industry. Bar code scanners are usually triggered manually by medical professionals to scan the patient's identification information or the bar code of the medicine to ensure the safety and accuracy of the medicine.
Scanning efficiency: Roll-up scanning mode allows healthcare professionals to more accurately control the timing and position of the scan to avoid misreading or incorrect information. At the same time, the scanner is able to quickly decode barcode information to improve the efficiency and accuracy of patient medication administration.
The global shutter makes the scanner scan faster, saving customers time and avoiding long queues at peak times, which can significantly improve your productivity. The roll-up shutter, on the other hand, reads relatively slowly and is competitively priced.
We hope this knowledge helps all our customers understand the features of our scanners, feel free to click to contact our sales staff and get a quote today.
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Post time: Jul-24-2023