Wireless real-time monitoring of temperature and humidity based on sensor Internet of things-medical cold chain transportation and storage
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1 Overview
The vaccine cold chain intelligent monitoring system is mainly designed for the special conditions of the monitoring environment required for disease control vaccines and the needs of product automation and intelligence. It is designed and built on the Internet of Things technology platform, comprehensively using Mingfei’s self-organizing network communication technology, RFID technology, A new wireless temperature and humidity monitoring system based on sensor technology and embedded computer technology.
The whole system has the characteristics of low cost, simple installation and deployment, and easy system operation and maintenance. The whole process adopts wireless data collection and wireless transmission, and the user eliminates the need for tedious and complicated project implementation such as the erection and installation of data lines and power supply wiring. The project installation is convenient and fast, and it is simple to operate, pollution-free, and intelligent. Target.
2 Positioning and functional description
The vaccine cold chain intelligent monitoring system is a complete, scalable, scalable, and whole-process cold chain monitoring solution. It can protect your medicines, vaccines, and other temperature and humidity sensitive items from damage caused by environmental changes during storage and distribution, and allows you to specify the operations that will be performed when the limit is detected, and the notifications and notifications that will be issued. alarm.
In addition, the system can also provide application interfaces for upstream and downstream third-party suppliers and customers of the system deployment unit to ensure the interconnection of information flow, physical logistics of medicines, and cold chain flow, and display it to corresponding personnel and institutions in a friendly interface.
The vaccine cold chain intelligent monitoring system, through cutting-edge and stable Internet of Things and cloud computing technology, is positioned as a perfect cold chain visualization system for the whole process, all-time, all-weather, all-wireless, and all-state; meets the needs of medicines, vaccines, biological products and others High-end customers demand for the overall solution of cold chain supervision, to achieve a global leading solution that is fast deployment, fast networking, global control, and all-in-hand.
With the development of the Internet of Things and cloud computing technology, it is completely possible to realize these functions. The system perfectly solves every link of the supervision process through mobile data collection, mobile computing, and wireless transmission, and sets safety redundancy between chains. , To ensure that the whole process is continuous, and preset interfaces with various systems to facilitate interconnection and intercommunication with other systems, to develop in-depth monitoring, and to support more applications of cold chain data.
The multi-function and rapid deployment of the product determine that hardware equipment needs to meet distributed collection and processing, and the software should have distributed computing capabilities, otherwise the cold chain supervision system cannot be effectively used, and the development of distributed software is more difficult. Therefore, the use of multi-distributed hardware technology and the development of more suitable software systems are a path of both opportunities and challenges for the development of cold chain supervision products.
2.1 Wireless, stability, and full collaboration are the direction of cold chain monitoring
“The whole process of cold chain supervision of drugs” refers to the unified deployment of safe and stable methods, integrating multiple collection, transmission, calculation and integration capabilities, and real-time data collection, analysis, early warning and reversible traceability system for the drug itself and the environment in which it is located. . These cold chain environments include workshops, warehouses, laboratories, refrigerators, cold chain vehicles, trains, airplanes, refrigerators, freezers, incubators, liquid nitrogen tanks, etc.
Medicine is a special commodity, which is related to the life and health of users, and it is easy to form group incidents. The quality affects the life of the enterprise and even the life of the industry (especially prominent in the absence of certain domestic industry standards and the reduction of collective trust among the people). Therefore, the quality and safety of medicines can only be better, not the best. Quality safety is the cornerstone of the operation of pharmaceutical-related enterprises.
Drug cold chain management From cold chain supervision, from refrigerated, frozen, to cool to normal temperature, conventional drugs, the current drug regulatory regulations have covered all types, technology from eye reading, handwriting to recorder, and then from recorder to wired temperature probe, from wired probe To wireless probes, and now on-board and airborne real-time online monitoring. In order to meet the user’s management needs for drug safety, the United States, the European Union, and Japan have also continuously updated and improved their technology and management methods, up to the current full-process real-time wireless cold chain monitoring platform, and cold chain supervision and ERP, TMS, WMS and other systems Continuously integrate, thoroughly realize the whole process of supervision and reverse traceability.
Usually cold chain equipment and cold chain supervision system builders usually need to face the cold chain equipment of five, six or more manufacturers at the edge of the network, which brings a lot of inconvenience. Although these products solve different cold chain links, Connecting in series at the “gateway” not only brings compatibility issues, but also affects performance and overall security is not ideal. In essence, the implementation of cold chain supervision security is shifting from the original simple separated border supervision to the three-dimensional border supervision. On top of the Internet of Things and cloud computing technology, it integrates a variety of data collection, transmission and early warning control management measures. The software and hardware “security gateway” of the company can greatly reduce the complexity of cold chain security system construction, simplify the workload of product integration, configuration and service support, and meet the user’s future application psychology and needs, which is the direction of future cold chain supervision and development.
3 Product overview
3.1 Product overview
Relying on the accumulation of experience in the drug cold chain supervision market in recent years, the company summarizes and analyzes the immediate needs of users, and launches a new generation of drug full-process cold chain supervision products-the smart cold chain monitoring system. Using high-performance hardware architecture and integrated software design, it integrates multiple technologies such as mobile data collection, mobile computing, private network transmission, network transmission software, distributed computing, etc., which fully meets the needs of workshops, cold storage, automobiles, trains, etc. Seamless cold chain monitoring of aircraft. At the same time, it fully supports QoS, load balancing, high availability (HA), log auditing and other functions, providing customers with comprehensive real-time security protection for all links of all cold chain products.
The system adopts an integrated design scheme, and realizes all aspects of cold chain data access that need to be considered in a coordinated and unified product, which can solve the problem of comprehensive drug cold chain supervision as a whole. Users do not need to worry about product deployment, compatibility and other confusions, and no longer worry about the difficulty of maintaining and managing multiple products. It is an ideal solution for cold chain supervision with low cost, high efficiency and easy management.
The system has a rich product line, which can provide a full range of cold chain safety requirements for users in clinical chemistry laboratories, operating rooms, ultra-clean rooms, blood products, biological products, freezers, drug production, drug wholesale, hospitals, and food related users. Monitor the product.
Since its introduction to the market, it has quickly won wide praise from many institutions and users for its powerful functions and excellent performance in practical applications.
3.2 Features
The whole cold chain monitoring system has the following characteristics:
Advanced technology, R&D and design using Internet of Things and cloud computing technology, application of wireless sensor network technology for field data collection; comprehensive application of self-organizing network technology, RFID, GPRS, Internet, and other network communication protocols to achieve full-region, full-time temperature and humidity monitoring ;
The system construction speed is fast, the platform system and the subsystems in various regions can be quickly established at the same time. The average construction time of the subsystems is 5 minutes, which is less than one-twentieth of the wired temperature and humidity data collection network;
A single probe can be set remotely and independently, and the upper and lower limits of temperature and humidity can be set separately for each node, which is convenient for separate monitoring of room temperature warehouse, shade warehouse, and cold storage;
Completely networked, the management station manages each monitoring sub-station through the network to realize remote centralized monitoring, which is convenient for the management personnel to fully grasp the business system. Access various information of the monitoring system through a Web browser to realize the remote monitoring function, and its function and interface are completely consistent with the local station.
The system is easy to expand. After the platform is built, the measured area and probe can be added without any changes to the program system software; the software interface is open to facilitate the addition and expansion of the monitored area at any time, and the addition, deletion and change of sensor probe nodes are easier ;
4 Architecture description
4.1 System Architecture
According to the needs of the Center for Disease Control and Prevention in Kuancheng District, the system is mainly aimed at monitoring vaccines (other cold chain products, etc.) in the warehouse (fixed point) and in transit (moving point) scenarios. The warehouse monitoring is divided into warehouse monitoring (cold storage, warehouse monitoring). Etc./province, prefecture, county level) and vaccination point level surveillance.
4.2 Product composition
The system is mainly composed of the following parts: smart data collection tag (MF-MC11), ad hoc network communication tag (MF-T22 wireless relay), ad hoc network wireless gateway (GPRS module), intelligent sound and light display, cloud platform .
Intelligent data collection label (MF-MC11): It is deployed on the environmental site to perceive the environment where the drug is located, and integrate data collection, calculation and wireless transmission capabilities. For the product, a high-precision integrated temperature and humidity sensor imported from Switzerland is selected, which has high accuracy , Reliable wireless transmission performance, long communication distance, low power consumption (built-in battery can be used for 5 years) and other characteristics, small appearance, suspension design.
Ad Hoc Network Communication Tag (MF-T22): It means to transfer data to the network. This is the core product of Mingfei IOT’s independent technology. At present, most of the market still relies on the ZIGBEE protocol, which has high power consumption. Disadvantages of network instability. Increasing the use of communication tags when the transmission distance is long can effectively ensure the stability and accuracy of the data.
Ad hoc network wireless gateway: It is a handheld wireless communication gateway for the Internet of Things with high reliability and high scalability. It is suitable for the mobile business logic needs of various industries. It can effectively reduce the attention of enterprise users to product hardware and is efficient and fast. Various business applications have been developed. It mainly aims at real-time data collection and transmission in the mobile cold chain link.
Intelligent sound and light alarm: display the collected tag information in turn, abnormal alarm, wireless, movable
Cloud platform: The computer or mobile phone can log in to the account and secret through the website link to monitor and display the temperature and humidity of each point, GIS map and other information storage, analysis, audit and processing functions.
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