US 11,832,932 B1
Scratching detection system
Takamasa Kogure, Tokyo (JP); and Eitaro Kondo, Tokyo (JP)
Assigned to NAOS, Aix en Provence (FR)
Appl. No. 18/037,400
Filed by NAOS, Aix en Provence (FR)
PCT Filed Nov. 20, 2020, PCT No. PCT/JP2020/043365
§ 371(c)(1), (2) Date May 17, 2023,
PCT Pub. No. WO2022/107304, PCT Pub. Date May 27, 2022.
Int. Cl. A61B 5/11 (2006.01); A61B 5/00 (2006.01)
CPC A61B 5/1114 (2013.01) [A61B 5/742 (2013.01); A61B 5/6825 (2013.01); A61B 2562/028 (2013.01); A61B 2562/0219 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A scratching detection system comprising:
a wearable sensor configured to be mounted in a fixed position on a hand of a person via one or more of: (1) a glove, or (2) an adhesive patch;
wherein the sensor is configured to detect an acceleration corresponding to a movement of the hand of the person;
wherein the sensor is configured to output a first signal including a detected value corresponding to the acceleration in a first cycle;
and a processor configured to
acquire the first signal and to detect a scratching behavior of the person in a second cycle based on a plurality of parameters,
the second cycle including a plurality of the first cycles,
the plurality of parameters including a first occurrence count and a first consecutive count,
the first occurrence count being a number of times that an absolute value of the detected value exceeds a threshold value in the second cycle,
the first consecutive count being a maximum value of a number of times that the absolute value of the detected value consecutively exceeds the threshold value in the second cycle;
and output a result of the detection to an output device, the output device including a display,
the display being configured to display a graphic chart depicting the result, the chart including at least one of the existence or absence of the scratching behavior, the first occurrence count, or the first consecutive count, where the existence or absence is displayed as a graphic trend on the chart.