By hmimcu Cold-chain transportation (Cold-chain transportation) refers to the transportation of goods that always maintain a certain temperature in the whole process of transportation, whether it is loading and unloading, changing the mode of transportation, changing packaging equipment and other links. Cold chain transportation is an important part of cold chain logistics, cold chain transportation costs are high, and contains more complex mobile refrigeration technology and incubator manufacturing technology, cold chain transportation management contains more risks and uncertainties.
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The cold chain transport process must rely on special vehicles such as refrigeration or refrigeration, and the frozen or refrigerated special vehicles must be equipped with additional refrigeration or refrigeration and insulation equipment on the vehicle in addition to the same body and machinery as a truck. In the process of transportation, special attention should be paid to continuous refrigeration, because microbial activity and respiration are strengthened with the increase of temperature, if the various links in the transportation can not guarantee the conditions of continuous refrigeration, then the goods may begin to rot and deteriorate in this link. At the time of transport, the method of transport should be determined according to the type of goods, the season of delivery, the distance of delivery and the place of delivery. In the process of transportation, try to organize “door-to-door” direct transportation, improve the transportation speed, and the temperature should meet the regulations. In order to maintain the refrigeration temperature of frozen goods, it can be tightly stacked, fruits, vegetables and other goods that need ventilation and heat dissipation must retain a certain gap between the shipments to ensure the integrity of the goods.
Cold chain transportation requires low temperature conditions in the transportation links such as medium, long-distance transportation and short-distance distribution. It mainly involves railway refrigerated vehicles, refrigerated vehicles, refrigerated ships, refrigerated containers and other low-temperature transport tools. In the process of refrigerated transportation, temperature fluctuations are one of the main reasons for the decline in the quality of goods, so the means of transport should have good performance, while maintaining the specified low temperature, it is necessary to maintain a stable temperature, long-distance transportation is particularly important.
Cold Chain Transport Temperature Requirements:
Frozen transport (-18°C~-22°C): Provide refrigerated transport vehicles that meet the standards to transport goods such as frozen food, meat, ice cream and so on. hmi module panel
Refrigerated transportation (0 °C ~ 7 °C): Provide refrigerated transport vehicles that meet the standards to transport such as: fruits, vegetables, beverages, fresh dairy products, flowers and seedlings, delicatessen products, various pastries, various food raw materials and other goods.
Constant temperature transportation (18 °C ~ 22 °C): Provide insulation and temperature control transport vehicles that meet the standards to transport goods such as chocolate, candy, pharmaceuticals, chemical products and so on.
Here Xiaobian recommends a temperature and humidity sensing chip launched by the domestic brand MYSENTECH agent, digital temperature sensor chip – MY18E20, the chip temperature sensing principle is based on the characteristic relationship between cmOS semiconductor PN section temperature and bandgap voltage, after small signal amplification, analog-to-digital conversion, digital calibration compensation, digital bus output, with high accuracy, good consistency, fast temperature measurement, Low power consumption, flexible programmable configuration, long life and other advantages.
The MY18E20 has a built-in non-volatile E2PROM memory unit that can be used to save chip ID numbers, high and low temperature alarm thresholds, temperature calibration correction values, and user-defined information. Provides a variety of package styles of single bus interface 0.5°C digital temperature chip to meet the needs of customers in different use scenarios, such as surface-mount M601B DFN8 package (2*2*0.55mm), M1601B SOT23-3 package (2.9*2.8*1.1mm), MTS01B DFN8 package (2.5*2.5*0.75mm), small in-line MY1820 TO92S package, M1820 TO92S package, etc. Products are widely used in board-level monitoring, ambient temperature, smart home appliances, smart home, consumer electronics and other fields.
In the field of temperature and humidity sensing, Zhejiang MYSENTECH is the leader among domestic brands. For more information about the technical application of Zhejiang MYSENTECH temperature and humidity sensing chip, please contact: 133 9280 5792 (WeChat same number)