In order to ensure that the temperature of cold chain transportation is within a suitable range, conforms to the operation specification of cold chain transportation, and ensures the quality of refrigerated items, we need a sensitive temperature monitoring and sensing system.cold chain In the past, the cold chain monitoring and sensing system in cold chain transportation mainly plays the role of temperature control, which automatically activates the refrigeration system according to the temperature changes and set standards in cold chain transportation to ensure that the temperature of the cold chain transportation compartments stays within a certain range.
The technical system of cold chain transportation is mainly composed of the following parts:
The first is the mobile refrigeration system, including mobile refrigeration systems for vehicles and products such as mobile refrigerators,cold warehouse dry ice and ice cubes, and other auxiliary cold-keeping refrigeration measures.
The second is the insulation technology system, including refrigerated containers, refrigerated compartments, insulated boxes, insulated bags, refrigerated containers, as well as a variety of insulation packaging technology and sealing measures.
The third is the cold chain monitoring system, which is mainly used to monitor and manage the cold chain transportation process, including temperature sensors, RFID, GPS and software management systems. In addition, it also includes information system technology for cold chain transportation.
Lastly, it is the cold chain transportation equipment technology, which mainly includes the cold chain transportation technology of low-temperature means of transportation such as railroad refrigerated vehicles, refrigerated cars, aviation refrigerated containers and refrigerated ships.
In the process of refrigerated transportation, temperature fluctuation is one of the main reasons leading to the decline in the quality of goods, so the means of transportation should have good heat preservation performance. It can be said that the better the insulation technology is, the more it can reduce the temperature fluctuation, reduce the running time of the refrigeration system, save intelligent energy and reduce the cost of cold chain transportation.
However, to achieve good thermal insulation, in addition to the need for refrigerated carriages to have good sealing performance, it is usually necessary to increase the thickness of the insulation layer of the carriages. This will reduce the utilization rate of refrigerated carriages and increase self-weight. Therefore, it is very important to reduce the thickness of the insulation layer and at the same time realize the best insulation effect. If good insulation can be achieved during cold chain transportation, the number of times the mobile refrigeration system is activated can be reduced, thus reducing energy consumption.
However, complete insulation is difficult to achieve, so temperature fluctuations are inevitable during cold chain transportation. If the temperature fluctuation exceeds a certain range, it is necessary to activate the mobile refrigeration system to return the temperature of the refrigerated compartment to the standard range through refrigeration.
In order to keep the temperature of the cold chain transportation within the appropriate range, comply with the operation specification of cold chain transportation, and ensure the quality of the refrigerated items, we need a sensitive temperature monitoring and sensing system. In the past, the cold chain monitoring and sensing system in cold chain transportation mainly played the role of temperature control, automatically activating the refrigeration system according to the temperature changes and set standards in cold chain transportation to ensure that the temperature of the cold chain transportation compartments is maintained within a certain range.
However, with the emphasis on food safety and drug safety, as well as the increased demand for transparent management of the cold chain system and the development of Internet of Things (IoT) technology, the cold chain transportation monitoring system not only monitors the temperature of the refrigerated compartments and controls the refrigeration system, but also adds a recording function and a traceability function. At the same time, with the development of vehicle networking technology, real-time remote monitoring, vehicle positioning and temperature monitoring functions have also been added. This can realize real-time transparent management, implemented remote monitoring, real-time vehicle positioning, full tracking and tracing and full temperature control for refrigerated transportation. At present, the cold chain transportation monitoring system has become the technical core of cold chain transportation.
