A dynamic early warning method for the ambient temperature of refrigerated vehicles

Abstract

The present invention provides a dynamic early warning method for the ambient temperature of a refrigerated vehicle, comprising steps: S1: setting a temperature dynamic early warning system; S2: collecting the temperature data of the compartment according to a preset time interval and sending it to the control center; S3: forming the ambient temperature by the control center Matrix; S4: Calculate and predict the ambient temperature; S5: Calculate the rate of change of the ambient temperature; S6: Calculate the upper limit and lower limit of the dynamic critical point of the ambient temperature; S7: Set the expert early warning domain; S8: Dynamically update the expert early warning domain; S9 : set the low temperature alarm threshold, normal threshold and high temperature alarm threshold; S10: determine whether to issue an abnormal temperature warning, when an abnormal temperature warning needs to be issued, the control center sends an alarm command to the corresponding vehicle terminal; S11: the alarm device alarms. The present invention provides a dynamic early warning method for the ambient temperature of a refrigerated vehicle, which enhances the perception and monitoring of the remote environmental information of the refrigerated vehicle, and realizes safe, efficient and intelligent refrigerated logistics.

Description

technical field [0001] The invention relates to the field of cold chain logistics, in particular to a dynamic early warning method for the ambient temperature of a refrigerated vehicle. Background technique [0002] Cold chain logistics is closely related to people's economic life. As an important part of cold chain logistics, refrigerated truck transportation is a key link to ensure food freshness and quality safety. Ambient temperature is a key factor in the monitoring of refrigerated trucks, which directly affects the nutrient loss and shelf life of refrigerated truck foods. [0003] At present, the processing methods of the ambient temperature of refrigerated vehicles are mainly divided into the following types: the first is to use an electromechanical chart recorder, and the ambient temperature records will be printed on a paper tape as time goes by. The advantage is that the historical data of the ambient temperature can be clearly displayed on the paper tape. Its dis...

AI Technical Summary

Problems solved by technology

[0003] At present, the processing methods of the ambient temperature of refrigerated vehicles are mainly divided into the following types: the first is to use an electromechanical chart recorder, and the ambient temperature records will be printed on a paper tape as time goes by. The advantage is that the historical data of the ambient temperature can be clearly displayed on the paper tape. Its disadvantage is that the data cannot be analyzed in time, and there are obvious deficiencies in real-time and automatic discrimination.

The second is an electronic temperature logger, which can measure and track changes in ambient temperature, but its data access often requires a physical connection and is not suitable for remote monitoring

The third is to integrate the temperature sensor into the node with wireless transceiver and communication function, which solves the problem of wireless collection of ambient temperature and realizes automatic uninterrupted collection. The collected digital ambient temperature information can be transmitted to the control center for analysis and diagnosis , which is conducive to storage and query, but it is still unable to effectively realize the perception and monitoring of remote environmental information of refrigerated trucks, and ensure safe, efficient and intelligent refrigerated logistics

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