System, device and method for calibrating sensor

Abstract

The invention discloses a system, device and method for calibrating a sensor. A calibration server and a sensor calibration information database are added in a sensor system; and when an acquisition terminal sends a sensor identification which corresponds to the physic digital data information acquired by the sensor to the calibration server, and a timestamp is also carried, the calibration server acquires the stored sensor calibration information in the sensor calibration information database based on the sensor identification which corresponds to the received physic digital data information, calibrates the physic digital data information based on the sensor calibration information and the timestamp so as to obtain the calibrated physic digital data information, and sends the calibrated physic digital data information and the timestamp to an Internet of Things application center or the acquisition terminal. As the sensor calibration information stored in the sensor calibration information database includes the sensor delaying information of the sensor, the hysteresis effect can be avoided by using the sensor calibration information for calibration.

Description

technical field [0001] The invention relates to the technical field of sensors, in particular to a system, device and method for calibrating sensors. Background technique [0002] At present, sensors are more and more widely used. They can collect physical digital data information on site, and after the physical digital data information corresponding to the sensor identification is processed by the collection terminal, it can be provided to the central server such as the Internet of Things application center. [0003] figure 1 Schematic diagram of the sensor network structure provided for the existing technology, including: sensors, collection terminals and Internet of Things application centers, among which, [0004] The sensor is used to collect physical digital data information and send it to the collection terminal; [0005] The collection terminal is used to provide the physical digital data information to the IoT application center after corresponding to the sensor i...

AI Technical Summary

Problems solved by technology

[0008] At present, although the sensor has a hysteresis effect when collecting physical digital data information, the hysteresis effect is the response time of the sensor when collecting physical digital data information. When the physical digital data information collected by the sensor is corrected, the error caused by the hysteresis effect of the sensor is not considered. In order to reduce the hysteresis effect of the sensor, it is necessary to use a more accurate sensitive element as the sensor, which will increase the cost.

[0009] In addition, when the sensor sends the collected physical digital data information to the Internet of Things application center through the collection terminal, and the Internet of Things application center needs to use the collection time sequence of the data information to process the data information, it can only reach the sequence according to the received data information Estimate the order of data collection time, however, the order of data information received by the Internet of Things Application Center may be inconsistent with the order of data collection time, resulting in the wrong judgment of the order of data collection time

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