Calibration method of electronic label with temperature sensor

Abstract

The invention discloses a method for calibrating an electronic label with a temperature sensor, comprising the following steps: step S1, using a metering-level calibration thermostat to generate a series of high-precision calibration labels in different temperature ranges; and step S2, performing calibration of the temperature-sensitive electronic label , prepare an ordinary incubator, put the label to be calibrated and the standard label within the range of the calibration temperature point into the designated position of the ordinary incubator for temperature scanning, and measure the temperature values ​​of the standard labels at the two temperature points and their corresponding temperature values ​​respectively. The output voltage value of the label to be calibrated is calibrated according to the obtained temperature value of the standard label and the corresponding voltage value of the label to be calibrated; step S3, write the parameters of the calibrated label to the label to be calibrated , the present invention can achieve the purpose of calibrating the electronic label with a temperature sensor, avoiding the use of a metering grade calibration incubator for calibration, the temperature stabilization time is short, the stability accuracy requirement is reduced, and the calibration cost will be greatly reduced.

Description

technical field [0001] The invention relates to the technical field of radio frequency identification (Radio Frequency Identification, RFID), in particular to a method for calibrating an electronic tag with a temperature sensor. Background technique [0002] Radio frequency identification technology (RFID) is a non-contact automatic identification technology implemented by radio frequency signals. It uses radio frequency to conduct non-contact two-way communication, so as to achieve automatic identification of target objects and related data collection. The ultra-high frequency (UHF) tag used in the EPCC1G2 protocol refers to an RFID tag with a working frequency of 860MHz to 960MHz, which has the advantages of long read-write distance, fast reading speed, and wide range of action. [0003] With the rapid development of the Internet of Things technology, the application of integrating item identification technology and sensing technology is becoming more and more important. W...

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Problems solved by technology

[0004] However, no matter what the method is, there may be deviations in the production process of the electronic tag and there may be errors in the initial collection of temperature data, so that the collected temperature cannot accurately reflect the environmental conditions. Therefore, the electronic tag with a temperature sensor must be calibrated

[0005] In the prior art, calibration thermostats are generally used to calibrate the electronic tags with temperature sensors one by one, but the disadvantage of this method is: because the calibration thermostats are relatively expensive, only professional institutions will have calibration thermostats. Each electronic tag needs to be calibrated one by one, which is time-consuming and labor-intensive, and the cost is high

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