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Intelligent portable-type cold-chain logistics temperature display recorder

A cold chain logistics and portable technology, which is applied to thermometers, thermometers with directly heat-sensitive electric/magnetic elements, instruments, etc., can solve the problem of low measurement accuracy of thermocouples, inability to reflect historical temperature values, and temperature value fluctuations Larger issues

Inactive Publication Date: 2013-05-15
XINCHANG GUANYANG TECH DEV
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  • Summary
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AI Technical Summary

Problems solved by technology

Now there are also some temperature measuring instruments that can measure the temperature of materials, but there are two common problems: 1. The measurement accuracy of conventional thermocouples is not high, and the measured temperature value fluctuates greatly; 2. It cannot reflect the historical temperature value during transportation. And provide credible print data

Method used

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  • Intelligent portable-type cold-chain logistics temperature display recorder

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Embodiment Construction

[0008] The present invention will be further described below in combination with principle diagrams and specific operation examples.

[0009] This system uses AT89S51 microprocessor as the core device for data processing and control. The chip has online simulation and online programming functions. It uses serial port circuits for simulation and programming, which makes the development process more convenient and the development cost lower. The system is placed in the material box, connected to 24V (12V) DC from the outside, and transformed into 5V by 7805, which is used by the system and the printer.

[0010] The temperature sensor adopts thermistor, the model is: NTSD0XH103.

[0011] The AD sampling module adopts TLC2543, which is a 12-bit serial analog-to-digital converter of TI Company, and uses switched capacitor successive approximation technology to complete the A / D conversion process. Because it is a serial input structure, it can save the I / O resources of 51 series si...

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Abstract

The invention discloses an intelligent portable-type cold-chain logistics temperature display recorder. According to needs of cold-chain logistics vehicles, features of a single chip circuit are combined, and software and hardware satisfying actual needs of cold-chain logistics are designed. A hardware circuit capable of accurate measurements is put up through the photo-coupling technology. The software is provided with openness and expandability. The software is capable of achieving dynamic scanning. A system is provided with functions of parameters storage and data temporary storage. After a process is finished, a mini printer is buttoned to print history temperature curve.

Description

technical field [0001] The invention relates to an intelligent portable cold chain logistics temperature display recorder. Background technique [0002] In cold chain logistics, the real-time temperature of materials is a very important control parameter in the transportation process. How to objectively, conveniently and accurately provide real-time temperature values ​​of items in the entire logistics process has become a new research topic in cold chain logistics. Now there are also some temperature measuring instruments that can measure the temperature of materials, but there are two common problems: 1. The measurement accuracy of conventional thermocouples is not high, and the measured temperature value fluctuates greatly; 2. It cannot reflect the historical temperature value during transportation. And provide credible print data. An economical and practical intelligent cold chain logistics temperature display recorder developed by this subject can meet the actual needs...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K7/22
Inventor 欧阳沁
Owner XINCHANG GUANYANG TECH DEV
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