Double-layered crisscross-structure particle collision sensor based on PVDF (Polyvinylidene Fluoride)

Abstract

The invention discloses a double-layered crisscross-structure particle collision sensor based on PVDF (Polyvinylidene Fluoride). The double-layered crisscross-structure particle collision sensor comprises an x-directional sensor layer, an insulating sheet, a y-directional sensor layer and a supporting plate, which are stacked in sequence from top to bottom, wherein the x-directional sensor layer comprises a plurality of x-directional sensor units; the y-directional sensor layer comprises a plurality of y-directional sensor units; the parallel arrangement direction of the x-directional sensor units is vertical to that of the y-directional sensor units; the x-directional sensor units are connected to an x-directional electric signal processing device through respective x-directional electricsignal collectors in parallel; the y-directional sensor units are connected to a y-directional electric signal processing device through respective y-directional electric signal collectors in parallel, so that a structure of electrically connecting sensors on the same layer in parallel and mechanically connecting sensors of different layers in series is formed. The double-layered crisscross-structure particle collision sensor disclosed by the invention provides a double-layered crisscross structure for the particle collision sensor, particle collision position information can be obtained according to a multi-sensor fusing technology and the detection precision is improved; a novel design concept is provided for the particle collision sensor.

Description

technical field [0001] The invention relates to a particle collision sensor, in particular to a PVDF-based double-layer cross structure particle collision sensor, which can be applied to agricultural harvesting machinery as a grain loss sensor. Background technique [0002] When agricultural harvesting machines such as combine harvesters perform harvesting operations, they need to go through steps such as cutting crop stalks, separating grains and stalks, crushing and throwing stalks, and collecting grains. Modern grain combine harvesters generally install grain loss sensors at the tail of the drafter and the outlet of the grain cleaning screen to detect grain loss. The grain loss sensor distinguishes grains and other impurities according to the amplitude and frequency of the electrical signal generated by the grain collision sensor. . At present, particle impact sensors are all designed with a single-layer piezoelectric material structure, and can only rely on increasing t...

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Problems solved by technology

At present, particle impact sensors are designed with a single-layer piezoelectric material structure, and can only rely on increasing th

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