| 摘要 |
PURPOSE: A method for guarding by using a laser and a reflective mirror is provided to be easily installed and to have a small power consumption by employing a laser beam technology having a small error rate. CONSTITUTION: A method for guarding by using a laser and a reflective mirror includes the steps of: supporting the reflective mirror on a predetermined height at the 4 angle area of the guard region; transmitting the laser pointer to the second mirror through the first mirror when the laser beam carrying a predetermined pulse travels to the mirror; reflecting and receiving the laser at the third mirror; receiving the laser from the receiving device; identifying the status of the laser through the data analyzed device; and alarming when the status of the laser pulse is abnormal. |
