SHEET-SENSING SYSTEM

原文（中国語）

A sheet-sensing system is applied to a sheet and a transparent carrier plate. The sheet is placed on the transparent carrier plate. The sheet-sensing system includes a microcontroller, an infrared-emitting apparatus, and an infrared-receiving apparatus. The sheet and the transparent carrier plate are disposed between the infrared-emitting apparatus and the infrared-receiving apparatus. The microcontroller controls the infrared-emitting apparatus to emit an infrared ray toward the sheet and the transparent carrier plate. The microcontroller uses the infrared-receiving apparatus to receive the infrared ray passing through the transparent carrier plate to determine a boundary of the sheet.