Impact sensor capable of positioning

Abstract

An impact sensor capable of positioning relates to a sensor. The impact sensor capable of positioning is provided with flexibility, an impact force magnitude detection function and an impact force positioning function. The impact sensor is provided with a base layer, a piezo-sensitive film, a protective layer, an electrode assembly and a signal processor. The base layer is made from an insulating flexible material; the piezo-sensitive film is an orthogonal grid-type array film formed by a high-molecular polymer micro nano fiber in a criss-cross manner; the piezo-sensitive film is arranged on the upper surface of the base layer and is covered by the protective layer; each polymer micro nano fiber forming the piezo-sensitive film is provided with a core and a shell which are coaxial; the core is made from high-molecular polymer equally-piezoelectric material; the shell is made from high-molecular polymer insulation material; the electrode assembly has a plurality of pairs of electrodes; two ends of each polymer micro nano fiber are provided with a pair of electrodes; and each pair of electrodes is electrically connected with the signal processor. The impact sensor of the invention can be mounted on a large flexible object surface to detect the impact; and the production and mounting are easy and low-cost.

Description

technical field [0001] The invention relates to a sensor, in particular to a positionable shock sensor. Background technique [0002] In recent years, impact sensors have been ubiquitous in the field of detection technology, mainly used in vehicles, ships, various lathes and other mechanical equipment, and may also be used in the fields of biomedicine and aviation in the future. Existing traditional shock sensors are generally made of rigid materials and complicated workmanship. Long-term use will cause wear and aging of parts and affect accuracy. The rapid development of fields such as modern biomedicine and the aviation industry has higher and higher requirements for the refinement of shock sensors, and existing sensors cannot meet the requirements of this field for the detection of subtle deformations of various components. Therefore, the miniaturization and flexibility of shock sensors can effectively promote the development of biomedicine and aviation industries. [0...

AI Technical Summary

Problems solved by technology

[0003] In the study of shock sensors, Chinese patent CN1186229A discloses a shock sensor capable of detecting shock force on the YZ plane. This device uses complex components such as magneto-resistive elements, waveform shaping circuits, and filled magnetic fluids. It is complex to manufacture and large in size. The shock sensor can sense shocks mainly on the YZ plane, and cannot detect shocks in other directions

Chinese patent CN101641565A discloses a shock sensor and a system including a shock sensor. The shock sensor is composed of a conductive layer and an insulating layer, which affects the sensitivity of the shock sensor. The sensor and sensor system are used in military protective armor such as body armor. , cannot detect weak impacts, only when a huge impact breaks down the object will the alarm be issued, and the object cannot be inspected and maintained in time

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