Calibration method of flexible pressure sensor

Abstract

The invention relates to the flexible pressure sensor production field and especially relates to a calibration method of a flexible pressure sensor. The method comprises the following steps of determining a response characteristic value and designing a corresponding acquisition system; using an airbag device to exert more than twice of pressure with a same pressure value on the flexible pressure sensor and acquiring a corresponding response characteristic value sequence under the pressure value; calculating an average value and acquiring an average response characteristic value with a small error so as to acquire a corresponding table of the pressure value and the response characteristic value; and according to a characteristic curve of the flexible pressure sensor, selecting a type of a flexible pressure sensor calibration line, and carrying out data fitting on the corresponding table of the pressure value and the response characteristic value so as to acquire a calibration line. In the invention, during a whole process, through numerical control or a computer, operation and calculation can be realized; calibration efficiency is greatly increased; and acquired result accuracy is high.

Description

technical field [0001] The invention relates to the field of flexible pressure sensor production, in particular to a calibration method for a flexible pressure sensor. Background technique [0002] The basis of modern smart life, that is, smart devices, cannot be separated from the use of sensors. Among them, the pressure sensor plays a key role. In the application of contact stress, the pressure sensor is inseparable. The pressure sensor plays a great role in the field of intelligence. In recent years, with the development of microelectronics technology and new material preparation technology, flexible pressure sensors have become an important part of many flexible electronic devices due to their softness, high elasticity, and stretchability, and can easily detect complex surface shapes. Therefore, it is widely used in wearable electronics, environmental monitoring, human-machine interface and other fields. [0003] However, the flexible pressure sensor has certain limita...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a calibration method for a flexible pressure sensor, which solves the problem of the inconsistency and attenuation calibration method of the flexible sensor in the prior art, which is basically completed by manual picking, which not only increases the labor cost , and the calibration efficiency is extremely low, and the error rate is also extremely high

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