Method for recognizing material, interactive board, and storage medium
AssigneesGuangzhou Shiyuan Electronic Technology Company Limited, Guangzhou Shiyuan Artificial Intelligence Innovation Research Institute Co., Ltd.
InventorsFei WANG, Cai CHEN, Jianxin LIN
Life of this patent
Estimating the term…
Abstract
The present disclosure provides a method for recognizing a material, an interactive board, and a storage medium, which is applied to an interactive board, and the interactive board includes an operation panel, an infrared touch sensor, and an elastic wave sensor. The infrared touch sensor is arranged on at least one edge of the operation panel to form a touch detection region of the interactive board, and the elastic wave sensor is configured to detect vibration of the operation panel and generate an electrical signal.
Claims18
A method for recognizing a material, performed by an interactive board, wherein the interactive board comprises:
- an operation panel;
- an infrared touch sensor;
- and
- an elastic wave sensor, wherein the infrared touch sensor is arranged on at least one edge of the operation panel to form a touch detection region of the interactive board, and the elastic wave sensor is configured to detect vibration of the operation panel and generate an electrical signal, and
- wherein the method comprises:
- generating an infrared blocking electrical signal by the infrared touch sensor from a first moment when a touch object performs a touch operation in the touch detection region;
- generating an original touch electrical signal by the elastic wave sensor from the first moment;
- calculating an average energy value of the original touch electrical signals within a current time window;
- calculating a ratio of the average energy value to an historical average energy value, wherein the historical average energy value is an average energy value of the original touch electrical signals within a previous time window;
- determining whether the ratio is greater than a preset threshold;
- acquiring an initial moment of the current time window as a starting moment of an effective touch electric signal when the ratio is greater than the preset threshold;
- acquiring an effective touch electrical signal within a preset time length after the starting moment as elastic wave data;
- and
- determining first material information of the touch object based on the infrared blocking electrical signal and the elastic wave data.
An interactive board, comprising:
- an operation panel;
- an infrared touch sensor;
- an elastic wave sensor;
- and
- at least one processing device, wherein the infrared touch sensor is arranged on at least one edge of the operation panel to form a touch detection region of the interactive board, the elastic wave sensor is configured to detect vibration of the operation panel and generate an electrical signal, and the at least one processing device is configured to:
- generate an infrared blocking electrical signal by the infrared touch sensor from a first moment when a touch object performs a touch operation in the touch detection region;
- generate an original touch electrical signal by the elastic wave sensor from the first moment;
- calculate an average energy value of the original touch electrical signals within a current time window;
- calculate a ratio of the average energy value to an historical average energy value, wherein the historical average energy value is an average energy value of the original touch electrical signals within a previous time window;
- determine whether the ratio is greater than a preset threshold;
- acquire an initial moment of the current time window as a starting moment of an effective touch electric signal when the ratio is greater than the preset threshold;
- acquire an effective touch electrical signal within a preset time length after the starting moment as elastic wave data;
- and
- determine first material information of the touch object based on the infrared blocking electrical signal and the elastic wave data.
A non-transitory computer-readable storage medium storing computer executable instructions, wherein the computer executable instructions, when executed by a computer processor, cause the computer processor to perform a method for recognizing a material, wherein the method comprises:
- generating an infrared blocking electrical signal by an infrared touch sensor of an interactive board from a first moment when a touch object performs a touch operation in a touch detection region of the interactive board;
- generating an original touch electrical signal by an elastic wave sensor of the interactive board from the first moment;
- calculating an average energy value of the original touch electrical signals within a current time window;
- calculating a ratio of the average energy value to an historical average energy value, wherein the historical average energy value is an average energy value of the original touch electrical signals within a previous time window;
- determining whether the ratio is greater than a preset threshold;
- acquiring an initial moment of the current time window as a starting moment of an effective touch electric signal when the ratio is greater than the preset threshold;
- acquiring an effective touch electrical signal within a preset time length after the starting moment as elastic wave data;
- and
- determining first material information of the touch object based on the infrared blocking electrical signal and the elastic wave data.
Dependencies are inferred from the claim text.