Flexible positioner with adjustable space detection range and detection method

The invention discloses a flexible positioner with an adjustable space detection range and a detection method. The positioner is mainly formed by sequentially stacking an upper packaging layer, an upper electrode layer, an ultrasonic sensitive layer, a lower electrode layer and a lower packaging layer from top to bottom, a polyester fiber backing layer is embedded in the lower portion of the upper packaging layer, and the lower electrode layer is externally connected with a signal generator. The method comprises the following steps: folding the positioner in a plane form into a three-dimensional form, detecting the X surface, the Y surface and the Z surface by rotating the whole positioner and swinging the folding block, and finally positioning an object to be detected. According to the method, a combined ultrasonic ranging principle and a spatial affine transformation algorithm are adopted, positioning work of a detected object is completed through ultrasonic ranging of at least three dimensions, and PVDF ad