冷链课程论文模板范文

Cold-chain logistics food safety monitoring system First, the system background Is a huge cold-chain logistics system, is the meat, fresh milk, such as the need for refrigeration of food, in the production, storage and transportation, marketing, to consumption in every aspect of the former, provided always in low-temperature environment, in order to ensure food quality to reduce the loss of a food system project. In recent years, with China's vigorous development of modern logistics, cold chain and cold chain logistics concept has been increasingly concerned about the people. As food safety and quality of attention, food logistics become the focus of attention. Cold-chain logistics and transportation involved in hundreds of foods, different foods on the temperature and the vehicle configuration requirements are different and how to achieve best practice, reduce wastage, improve efficiency, China is still a lack of corresponding standards. To this end the company launched a long-range temperature-based RF card "cold-chain logistics of food safety control systems" solution Second, the system outlined The project plan based on issues of national scientific and technological support "model of modern logistics services", in order to radio frequency identification (RFID) technology as the core, combined with the use of GPS, GIS, GPRS, intelligent sensing and other advanced technologies, the establishment of cold chain monitoring network goods Container Logistics and public security monitoring platform, including cold-chain goods flow and the state of information collection terminals, real-time monitoring of vehicle terminals, remote monitoring and control platform for the three parts of cold-chain items to achieve a state of alarm monitoring and security, the whole process of cold-chain items retrospective information functions. 1. System RFID temperature: a temperature sensor is an electronic label, temperature sensor to collect the information to the electronic tags, electronic tags in the field to launch non-stop. Items installed in the container GPRS and LCD screen with a fixed reader: Yes, the message read labels, installed in the driving room, Controller: Control Alarm function Monitoring System: By constantly monitoring the system to changes in temperature within the container. 2. The working principle When the cargo is loaded on the train after the acquisition of real-time information collection container terminal temperature, humidity, status information, and from time to time to write containers of electronic labels, electronic labels constantly send out information, then the reader receives the information through the GPRS sent to the Control Center, in the driver's display can be seen in the temperature of goods. Remote monitoring and control of all of the information platform for receiving, storage, access and visualization of information to the form or to check the way, real-time transport and cold chain staff interact. 3. Products: Distance: 10 meters distance to read easily. Attendance because of physical conditions, can be set from the card reader. Stable operation: active-card reader from the stable, not easily affected by the surrounding environment. Channel isolation technology use, non-interfering multiple devices; Support high-speed mobile read: ID cards for mobile speed up to 200 km / hr. High reliability: ambient temperature -40 ℃ -85 ℃ completely normal to be able to run (MTBF ≥ 70000 hours), especially at low temperature in the North and the South is even more advantage of high-temperature state can be effective against the adverse environment of high air dust and rain and other pollutants as well as the environment, to ensure the normal use of equipment. Computing encryption and authentication to ensure data security, to prevent eavesdropping and data-link break; High anti-interference and lightning protection design: a variety of interference sources on the scene without special requirements to meet the requirements of industrial environment, easy to install. Open microwave global ISM band, there is no need to apply and pay. Ultra-low power: long life, with an average low cost, and on human security, a healthier, no radiation damage. Microwave modules can be configured work, adjustable transmit power; Identification of more than: You can also identify more than 200 marked, if the scene more and more than 200 marked, we have the means to deal with.