Mobil RFID cold chain transportation real-time temperature monitoring system
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After long-term research and development and testing, Mobil solemnly launched the Mobil RFID cold chain transportation temperature monitoring system, which can be widely used in the real-time temperature monitoring business of cold chain logistics transportation in various industries. Recently, there have been very serious problems in the cold chain transportation of vaccines in some regions of China. The following takes the cold chain transportation of vaccines as an example to illustrate the typical industry application of the Mobil RFID cold chain transportation real-time temperature monitoring system.
Vaccine is a relatively special commodity. It has strict requirements on the environmental temperature of storage and transportation. The failure of many vaccines is difficult to be directly recognized from the senses. This is doomed to the concealment of the problem and the difficulty of identification. At this stage, my country still lacks effective cold chain logistics management methods. The original monitoring technology is lagging behind, manifested by manual measurement and paper records; no unified data system support; poor real-time performance and disconnected supervision; difficulty in obtaining evidence, inability to determine responsibility, and inability to make early warnings. At present, China’s laws and regulations on drug cold chain technical specifications and regulatory standards are in the process of formulating, and it is a general trend for the vaccine cold chain to enter the regulatory field.
1. Current status and requirements of vaccine cold chain management
The content of cold chain data includes basic information of vaccines, basic information of cold chain equipment and its maintenance records, basic information and maintenance records of monitoring equipment, and basic information of cold chain managers. According to the running direction of the vaccine cold chain, starting from the starting point manufacturer’s product, it moves to the recipient population in a branched distribution pattern, and finally reaches the recipient population. According to the current status and management characteristics of the vaccine cold chain, the entire cold chain can be divided into three sections, namely the first section, the middle section and the last section.
The first stage starts with the products after the manufacturer’s production line goes offline and ends with the storage of provincial and municipal medical and health institutions. This cold chain segment contains the inventory, wholesale, and transportation of units at all levels. Generally speaking, the cold chain data at the first stage of the cold chain is complete, and the quality of management can be guaranteed.
The starting point of the middle section is from the outbound node when the provincial and municipal medical and health institutions dispense vaccines, and ends when the medical and health institutions in the prefectures, cities and counties receive and warehousing. The data in the middle section of the cold chain is also relatively complete, but lacks efficiency. The cold chain quality assurance of transportation vehicles has defects in some areas, and cold chain monitoring tools are mostly manual registration operations. The cold chain management in the vaccine transportation process depends on the cold chain transportation tools of medical and health institutions or the transportation services provided by third-party logistics providers. The integrity of the obtained cold chain data may be affected by more complicated factors. Therefore, This cold chain segment needs to improve monitoring methods.
The last segment of data can also be subdivided into two segments, from the inventory of the medical and health institutions in the prefectures, cities and counties to the inventory of the community health service center (vaccination point), and then to the recipient to complete the vaccination. The data integrity at the end is prone to blanks, which are characterized by large uncertainties in time and temperature, and difficulty in data acquisition.
Continuous data on the vaccine cold chain is very important, and continuous cold chain data is the source of information needed for vaccine cold chain management. The key to obtaining continuous data lies in two aspects: the data collection of each cold chain segment and the handover between the cold chain segments.
The temperature information in the vaccine cold chain is the core data, and other information is the ancillary data. The quality change of the vaccine is judged based on the core data, and the external environmental conditions and the responsible person when the temperature changes are judged based on other data. If the cold chain data of the vaccine is found to be incomplete or out of the cold chain during immunization at the end of the cold chain, there is a basis for judging whether the vaccine is damaged. And it can be based on the time, location, responsible person and other data to determine the responsibility, which provides a basic guarantee for the entire cold chain management.
Therefore, complete and continuous data supports the traceability of cold chain management and cold chain time occurrences, provides effective information for supervisory evidence collection and responsibility determination, and creates conditions for system protection from the legal level.
2. Using Internet of Things technology to realize vaccine cold chain management
According to the characteristics of vaccine cold chain management, this system uses the Internet of Things technology to monitor the storage temperature in the middle/end of the vaccine cold chain that is currently in urgent need of strengthening management. Once an abnormality is found, it will promptly issue an alarm and notify relevant personnel to take corresponding measures. Reduce vaccine failure. When a vaccine cold chain accident occurs, it can be judged that the vaccine has deteriorated and will be detected and destroyed, so as to avoid the accident. At the same time, the problem link is defined through data facts in order to identify the party responsible for the accident and pursue legal and economic responsibilities; even through data analysis , Can dig out the location of the accident, the frequency of frequent problems with the vehicle, and the operator.
The application process of the system is as follows:
This system uses wireless temperature and humidity sensors to monitor the temperature changes during vaccine terminal transportation, combines with GPS technology to realize the information integration of vehicles, objects, locations, and temperatures, and uses wireless communication technology to realize real-time supervision.
1. System composition
a Wireless temperature sensor
Equipped with refrigerated warehouses of medical and health institutions in prefectures and cities, refrigerated refrigerators of community health centers, refrigerated transport vehicles, and vaccine freezers, to constantly monitor the temperature curve and send abnormal data wirelessly.
-Integrate dual technology of temperature and humidity sensing technology and active RFID;
-The temperature collection accuracy is 0.5℃, and the collection range is -30℃～+70℃.
-Built-in battery, the service life can be up to 5 years;
-The wireless communication distance is 100 meters, which can penetrate metal barriers such as refrigerated trucks;
-Industrial design (waterproof, anti-static, anti-shock, anti-vibration, anti-drop);
b Handheld
Equipped with prefecture and city medical and health institutions, vaccination point warehouses, and refrigerated transport vehicles to collect temperature sensor data and location data.
-Wireless sensor data collection terminal
-GPS positioning, GPRS data transmission, temperature monitoring and location monitoring are unified
-Fingerprint recognition to determine the identity of personnel
-Barcode scanning to realize single product management of vaccines
c Cloud-based vaccine cold chain query service platform
Using cloud technology, the entire query of vaccine cold chain data is realized. Including data center and SAAS services, as well as comprehensive monitoring and management terminal software. The data center guarantees the safe storage of data; the SAAS service provides the data center with effective temperature and humidity information and other original data, and provides service interfaces for various application management software. At the same time, the service can support the seamless access of various mobile terminals, including : Mobile phones, PCs, industrial handhelds, wireless temperature and humidity sensors; comprehensive monitoring and management terminal software provides daily management functions such as information maintenance and comprehensive monitoring for enterprises after registration confirmation.
-Data center based on security measures: Provide data storage, data processing, data backup and other functions.
-SAAS service: enterprise access registration service, data collection service, providing temperature and humidity information service, location information service, data analysis service, short message warning service, warning processing oriented service, data access service.
-Comprehensive monitoring and management terminal software: adopts B/S architecture to provide functions such as information maintenance, comprehensive monitoring, and statistical query. At the same time supporting mobile terminal software.
2. System function
2.1 Real-time monitoring of inventory storage temperature
Wireless temperature sensors are placed in the refrigerators of prefecture and municipal health institutions and community health centers (vaccination points) to monitor the vaccine storage temperature in real time.
2.2 Real-time temperature monitoring during transportation
Put a wireless temperature sensor in each refrigerated transport vehicle and vaccine refrigerated bag to monitor the temperature in the refrigerated bag in real time. When the temperature reaches the upper and lower limits, it can alarm by wireless, sound, etc., and record the specific time and continuous duration of the temperature exceeding the limit Wait for data, when the refrigerated package arrives at the inoculation point, use the handheld to collect the data of the wireless temperature sensor in the refrigerated package, and upload the data of the transportation process to the cold chain cloud service platform through the operating network.
a During vehicle transportation, GPS+RFID reads the temperature of the label in the box in real time and uploads it to the system server via GPRS;
b The driver and the relevant person in charge will be notified by SMS when the temperature is abnormal;
c Authorized users of the system can directly view the real-time temperature during transportation through the network.
d Before the vehicle arrives at the transportation destination and is ready to unload, the handheld terminal displays the relevant temperature and humidity records, and displays the transportation temperature records to the customer;
e The driver displays the transportation temperature for the user, and the customer confirms the temperature, and the customer can inquire the details;
f The drug is checked into the warehouse.
3. System features and advantages
-Wireless identification mode, no one automatically reads temperature data;
-The temperature sensor is automatically monitored without human intervention;
-Full temperature monitoring, intelligent recording, no data loss.
-Real-time monitoring, all-weather, all-day monitoring of the ambient temperature of the vaccine during transportation;
-Early warning management, during transportation, monitor that the ambient temperature exceeds the limit, and the system will issue an alarm to the user in time;
-The query management platform based on cloud technology provides the management of massive data of the Provincial Center for Disease Control and Prevention.
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