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In terms of mechanical temperature monitoring, RFID temperature tags with high-temperature and high-precision recording are provided to the subway to be installed on important parts such as the power supply, engine, and wheels of the train. The temperature analyzes whether the equipment is ready to enter abnormal work or is about to fail. . The 2.4GHz wireless transmission of temperature information completely changes the previous management mode of manual inspection of train equipment. The site collects abnormal temperature information in real time, and provides early warnings to the subway control center many times, preventing the train from staying on the running road, saving the subway a major economy Benefits and maintained a good image.
In terms of cold chain transportation, the cold transportation professional vehicle positioning management system is an open positioning monitoring platform that integrates GPS/temperature detection technology, electronic map and wireless transmission technology. While the temperature data in the refrigerated vehicle is collected, transmitted, recorded and alarmed for over-limit temperature, it also effectively tracks and locates the resources of the refrigerated vehicle.
Application of RFID in cold chain logistics
1. Implementation background
Logistics and transportation must have real-time visual temperature control from unloading, packaging, storage to conveying, in order to maintain the original value, so that users can eat and use comfortably. The complete record of the temperature of the environment in which the materials are located in cold chain logistics has a positive effect on its preservation and the investigation of the cause of the problem. BisWin’s self-developed temperature tag combined with RFID and modern sensing technology can measure and record the ambient temperature of the material while identifying the material, and determine in real time whether the ambient temperature of the material exceeds the allowable range during storage and transportation. , To achieve the traceability of the whole process of quality.
Two, program introduction
1. Temperature label: 2.45GHZ series temperature label, with anti-low temperature, waterproof, condensation and other functions, suitable for sending signals and recording temperature for a long time in the cold car body. The collection temperature environment is divided into normal temperature (-30℃~+120℃) and very temperature (-80℃~+120℃, or 0~+200℃). Choose suitable products in cold chain and hot chain environment. At the same time, it can effectively understand the over-temperature alarm and master the dynamic law of temperature changes. The user can independently set the temperature label sending interval, receiving interval, recording start, and recording interval. For example, during the transportation of ice cream, the ice cream must be kept at a constant temperature of -20°C during the transportation. If it stays above 2°C for more than 10 minutes, the taste of the ice cream will change and the ice cream will also be deformed. In order to prevent quality problems of the ice cream, the user can The sending interval and receiving interval of the label are set to once every 5 minutes, the over-temperature alarm is set at 2°C, and the recording start function is activated to monitor the temperature changes during ice cream transportation with limited effectiveness.
2. Gain controllable reader: In logistics and transportation, the power supply and appearance design of the reader are fully compatible with the on-board environment, and the on-board power supply can be implemented; the reader can be placed on the front platform of the front co-driver or the position of the DVD space , No need to change the interior equipment or layout, and does not affect the operation of the driver and the co-driver; its antenna is omnidirectional and extended, which can identify and track the object targets of the cabin temperature monitoring in all directions. Users can adjust the recognition distance of the reader according to actual needs to make the recognition range more accurate. Cooperating with the existing vehicle-mounted GPS all-in-one, BisWin provides embedded readers or external readers such as USB ports and RS232 ports to share the GPRS data transmission channel.
3. Processing the central control: The processing central control and the reader are connected together and placed in the cold car cab position. Through the processing central control, the setting management mode can be adjusted intelligently and flexibly, and finally the management target temperature is realized; the data is optimized by the central control Then upload by GPRS to avoid packet loss due to excessive data flow transmitted through GPRS; when the temperature is higher than the set temperature zone, the processing central control will automatically alarm and prompt the relevant driver, recipient, The shipper and other personnel take measures; through the door sensor sensor, the platform can display whether the door is opened and the number of times and duration of door opening during transportation. This can effectively monitor the temperature changes of items during transportation and reduce the number of openings due to excessive or Excessive fuel consumption will occur if the length is too long; you can set the working mode when the transport vehicle starts/stop, and select the data that needs to be uploaded.
4. Operating platform: The platform service includes four powerful functions: the operating platform is built under the B/S architecture and uses a high-speed cloud computing platform; users can understand the real-time geographic location of the transportation vehicle on the road and the real-time monitoring temperature situation in real time ; The BisWin platform is compatible with data import function, uploading to three parties for sharing; for the WMS platform already in use, customers can choose to use the Webserve interface.
Three, application scenarios
A. Thermostat storage
The thermostat is the most common application environment with the largest number of items in the cold chain and the hot chain. The probe of the thermostat smart label provided by BisWin is put into the thermostat through the hole to monitor the temperature inside the thermostat in real time.
It is suitable for hot chain catering distribution, seafood food, blood package distribution, etc. After long-term laboratory verification of aging tests and rich experience in project use, our temperature label is suitable for high temperature disinfection at 100°C. The installation of the system is simple. You only need to put the label probe into the incubator, the label shell is tightly attached to the outside of the incubator, and the RF antenna is introduced into the compartment to complete the temperature data collection.
B. cold storage
In order to integrate the integrated intelligent management of the cold chain and save system costs, BisWin provides a cold storage temperature monitoring system. The GPRS+ temperature probe of the temperature sensor is fixed in the cold storage, and the temperature data is transmitted through the GPRS and GSM modules fixed outside the cold storage. In response to abnormal heating or cooling, after the background monitoring and alarming, the staff quickly took measures to reduce the temperature or heating. , Thereby reducing or avoiding losses.
C. Cold storage
The temperature tag is directly placed in the cold car compartment to monitor the temperature of the transported goods. Put the reader in the cab, introduce the RF antenna into the cold compartment, put the temperature tag directly in the cold compartment, and find a suitable location to fix it. Through the reader, the temperature change in the cold car is transmitted to the temperature control center in real time. The control center is responsible for information exchange with intelligent vehicle terminals, classification, recording and forwarding of various short messages, network interconnection with other related functional departments, and the flow of business information between these departments; at the same time, it monitors and manages the entire network status . It is suitable for blood, vaccine fresh food, ice cream truck, frozen meat, distribution, etc.
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