Application scheme of RFID temperature tag in cold chain management

chrispeng January 3, 2022 Shipping

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1. Challenges and needs

We can often see from the media news reports about major personal accidents and economic losses caused by the lack of effective cold-chain logistics management in the production and transportation of food and drugs. In this regard, the Chinese government has successively issued relevant food safety supervision laws. , Regulations to regulate the management of the cold chain supply chain. For example, in April 2005, the Beijing Municipal Administration for Industry and Commerce began to implement “cold chain” sales management in distribution enterprises throughout the city, requiring that perishable foods such as meat, cooked meat products, soy products, and dairy products “be Being in a low temperature environment” to ensure the quality of food to the utmost; On April 19, 2005, the State Council also promulgated the “Regulations on the Administration of Vaccine Circulation and Vaccination.”

At this stage, my country still lacks an effective cold chain logistics management method, and the lagging of the original monitoring technology is the biggest technical bottleneck. The main sticking points of my country’s technical measures at this stage are: manual measurement and paper records; no unified data system support; poor real-time performance and disconnected supervision; difficulty in obtaining evidence and inability to determine responsibility; inability to provide early warning and high loss rate. In this context, Chengdu AIF Communication Co., Ltd. has carried out the research and development of “RFID-based cold chain products” (hereinafter referred to as products).

2. Application scheme

This system is composed of temperature tag, handheld card reader and host computer.

Figure 1 Schematic diagram of cold chain system

Place the temperature label in the space for storing the goods (for example, in a refrigerated vehicle), use a handheld card reader to start the temperature label work, make it start temperature measurement, and automatically save the measured data. The handheld card reader can read and display the historical temperature data measured in the tag at any time, or upload the data stored in the handheld card reader to the upper computer for display by the upper computer. In this way, the long-term temperature monitoring of the cold storage room can be carried out to achieve the purpose of scientific management of the cold chain and reduce unnecessary losses.

3. Program features

(1) Temperature label stability and high reliability

(2) The normal working temperature range is -25℃～65℃, and the humidity range is <98%; it can effectively resist high dust and humidity in the air in harsh environments, and can ensure the normal use of the equipment.High anti-interference, no special requirements for the surrounding environment, strong environmental adaptability (3) The measurement temperature resolution and accuracy are high: the measurement temperature resolution reaches 0.1℃, and the error is ±0.5℃ (4) The temperature measurement range is large: the temperature measurement range is: -40℃～70℃ (5) Long battery life: using a button battery can work for up to 3 years (6) The system is easy to operate: use a handheld card reader to start the temperature measurement work of the temperature tag, and both the upper computer and the handheld card reader can display the historical temperature data stored in the tag 4. Hardware composition

(1) Temperature label ST24_0020A