Method for suppressing pressure disturbance of flexible temperature sensor
A temperature sensor, flexible technology, applied in the field of measurement, can solve the problems of temperature sensor performance degradation, sensor drift, etc., and achieve the effect of pressure interference suppression and interference suppression
Active Publication Date: 2017-05-31
CENT SOUTH UNIV
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Problems solved by technology
Therefore, the output of the sensor will drift with the change of pressure in the temperature measurement, which will lead to the degradation of the performance of the temperature sensor
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[0023] Lay four strips of copper foil on the polyimide film as the electrode layer; open four windows on another polyimide film as the window layer; the four windows include two short windows parallel to each other and two two parallel long windows, the width of the two short windows is 0.5 mm, and the length is 0.41 cm, the width of the two long windows is 0.5 mm, and the length is 5.16 cm, and the vertical distance between the two short windows is 3.33 cm, The vertical distance between two long windows is 0.36 cm;
[0024] The window layer coated with thermosetting adhesive is covered on the electrode layer, and the electrode layer, thermosetting adhesive and window layer are heat-pressed and packaged with a flexible material packaging machine to form a structure composed of the electrode layer and the window layer; remove overflow The thermosetting glue at the four windows of the window layer to ensure that the copper foil of the electrode layer can be exposed through the f...
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Abstract
The invention discloses a method for suppressing pressure disturbance of flexible temperature sensor, belongs to the technical field measurement. In the method for suppressing pressure disturbance of flexible temperature sensor, a bridge system based on differential temperature resistance sensing element is designed to reduce the pressure disturbance. The differential temperature resistance sensing element comprises a pixel electrode layer, a window layer and a temperature sensitive layer. The pixel electrode layer is composed of an insulating film covered with four copper foils. The window layer is composed of an insulating film with four windows. The temperature sensitive layer is composed of a positive temperature resistance positive pressure resistance sensitive film and a positive temperature resistance negative pressure resistance sensitive film. The positive temperature resistance positive pressure resistance sensitive film and the positive temperature resistance negative pressure resistance sensitive film with two short electrodes and two long electrodes are connected with the bridge relative bridge arm to form a bridge system based on the differential temperature resistance sensing element. The method for suppressing pressure disturbance of flexible temperature sensor can be used in large equipment, narrow surface, inters layer temperature measurement and other fields.
Description
technical field [0001] The invention belongs to the field of measurement technology, in particular to a flexible differential temperature sensor. Background technique [0002] The temperature measurement between layers of narrow curved surfaces of large national defense and industrial equipment is crucial to the normal operation of the system, but due to the narrow gap between layers and irregular contact surfaces, it is difficult to install traditional rigid temperature sensors, so thin and flexible sensors are required , can be applied smoothly between narrow curved surface layers to complete the temperature measurement task. Conductive polymer composites have temperature sensitivity and flexibility, so they can be used to prepare flexible temperature sensors to achieve interlayer temperature measurement on narrow curved surfaces. However, the output resistance of this composite material changes with pressure, and the two curved surfaces of the narrow curved interlayer st...
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IPC IPC(8): G01K7/16
CPCG01K7/16
Inventor 王璐珩
Owner CENT SOUTH UNIV