Nam Viet – A provider of RFID technology solutions.

Hello, are you looking for information and advice on RFID technology? Nam Viet specializes in providing RFID products that will meet your needs. Please take a look at some of the information we have related to what you're looking for!

1. Nam Viet is a supplier and consultant of RFID equipment in Vietnam.

Many customers are unsure which type best suits their needs to avoid buying counterfeit or non-genuine products. Understanding these customer needs, we offer detailed information and advice on the most suitable product for all your requirements. Nam Viet Barcode is committed to providing genuine Balluff products with full manufacturer warranty. Balluff is a leading authorized distributor of RFID equipment.

2. Overview of RFID.

What is RFID? RFID is a device that uses a fixed radio frequency to identify and track objects attached to it.

2.1. Structure of an RFID system.

It consists of three main parts:

• A small transponder (a communication device that receives radio signals and retransmits them in a specific manner provided by the manufacturer).
• A receiver (a device that receives radio frequencies).
• A transmitter (a device that emits radio frequencies so that a receiver can pick up those frequencies).

2.2. Card structure.

General structure of RFID tags

It consists of three main components:

• A small chip is placed in the center of the card to store and process necessary information.
• An antenna for transmitting and receiving radio waves.
• A substrate (a material used to create the card)

2.3. Classification of RFID tags.

RFID tag classification

There are two main types of cards as follows:

• Passive tags: These tags  use energy from radio waves emitted by the RFID reader to retrieve data, therefore their operating range is limited to short distances.
• Active tags:  Powered by batteries, they can read query data from a greater distance compared to passive tags.

3. Advantages of RFID tags.

• The simplest and most optimal solution uses a radio wave signal transmission and reception system, which is more efficient than conventional barcodes.
• Track product data over time in the most optimal and accurate way.
• Able to read information from a distance.
• Receiving information from a short distance without the need for physical contact.
• It offers better spatial efficiency for data transmission compared to barcodes or other technologies.
• Easy to use, efficient, and saves time.

4. Disadvantages of RFID tags.

Alongside the advantages mentioned above, there are still a few disadvantages as follows:

• The cost is higher compared to regular barcodes.
• Some issues may occur during scanning. Most RFID tags can scan through most environments, but there are still some errors when scanning through water and metal.
• Poor security. Some devices can still gain unauthorized access to the RFID system to read and modify the data within it.
• More complex than conventional barcodes, RFID requires 100% accuracy to achieve optimal performance.
• RFID tags process and provide so much data that if users don't utilize it properly, it can lead to an overload of unnecessary information.

5. RFID applications.

RFID applications are widespread, almost worldwide, across all industries, but most notably in the industrial sector. For example:

Control of goods in industry.

Tags in inventory management

RFID tags will be attached by workers to products that need sorting to assist in controlling inventory and tracking the quantity of products currently in the warehouse.

In animal husbandry.

Tags: RFID in animal husbandry

We can attach tags or wear them on animals to control their numbers, monitor their health status, and classify the origin of animals raised for export to the market.

In the logistics and retail industry.

Tags in the Logistics and Retail industries

After products leave the factory, a team of employees attaches permanent tags to them. They are then transported to distribution centers and finally to retail stores for sale. Here, consumers simply select the products they wish to purchase. The tags attached to the selected products emit signals that are recognized by the RFID device, allowing for quick payment processing. This makes payment easier compared to using conventional barcodes.

Manage workforce and timekeeping.

Employees in the company will be issued a card called an employee ID card, which contains an  RFID chip.  Simply inserting the card into an RFID scanner will allow the RFID chip to identify the user and manage their working hours. This helps reduce the time spent on registering work information as was previously required.

In healthcare.

Medical tags

There will be wristbands with RFID tags to help track the health status of patients who need continuous monitoring, with daily updates to the RFID system. There will also be wristbands for children and the elderly to help monitor and manage dementia more effectively when regular monitoring is not possible.

In the transportation sector.

RFID devices  are installed on buses or taxis, emitting a fixed frequency. After passing through a gate equipped with an RFID device, the owner receives a signal from the tags attached to each vehicle, which helps identify the user and allows the driver to process payments faster than manual payments as before.

6. The frequency at which RFID can operate.

Depending on the country and intended use, RFID frequencies vary, but RFID operates on two main frequencies: 902-928 MHz and 865-868 MHz.

As for Vietnam, it will use the following two frequencies: 866 – 869MHz (power: 0.5W) and 920 – 925MHz (power: 2W) according to the standards of the Ministry of Information and Communications.

7. Operating principle.

The operating principle of RFID devices

The operating principle is quite simple. First, the master RFID device emits a fixed radio frequency, specifically defined for each type of product. Simultaneously, the tags attached to products within the coverage area receive the signal from the master RFID and transmit a signal back to the master RFID, allowing them to identify the tag's code.

8. RFID system provider

In Vietnam, there are many companies that provide RFID systems, but not many have mastered this technology. Nam Viet is confident that we will be your reliable partner in this field. We have a team of well-trained engineers who can advise, select products, and support customers until the project is successfully completed.