Abstract: A lidar sensor comprises a sensing area unit configured to set a sensing area in a maximum scan angle range and manage the set sensing area, a light output unit configured to output a light with a specific angle so that the light is outputted to a specific sensing area, and a sensing unit configured to sense an object in the specific sensing area by using a reflection light of the outputted light. The outputted light forms a trigger line, the sensing unit obtains a measured angle and a light arrival time of the sensed object based on the trigger line, and a minimum distance and a maximum distance from the lidar sensor to the specific sensing area are set based on the trigger line.

Abstract: A rotary type lidar sensor using inductive power and wireless data transmission is disclosed. The lidar sensor includes a second board, a lidar module disposed on one surface of the second board and configured to scan a specific range and a power generation unit configured to generate a power. The power generated by the power generation unit is supplied to the lidar module through the second board without using a cable, and the lidar module does not rotate itself but rotates in response to rotation of the second board.

Abstract: Disclosed are a three-phase wiring detection device and a coincidence phase detection method. The three-phase wiring detection device and the coincidence phase detection method compare a power factor relationship between a three-phase voltage and a three-phase current, and determines whether a coincidence phase is coincident between the three-phase voltage and the three-phase current, thereby checking whether the coincidence phase is accurately coincident. Therefore, whether the coincidence phase is coincident between the three-phase voltage and the three-phase current can be checked, and a function of a reverse phase detector and a function of a coincidence phase checker can be implemented. Also, the three-phase voltage and the three-phase current can be accurately detected.

Abstract: Disclosed are a three-phase wiring detection device and a coincidence phase detection method. The three-phase wiring detection device and the coincidence phase detection method compare a power factor relationship between a three-phase voltage and a three-phase current, and determines whether a coincidence phase is coincident between the three-phase voltage and the three-phase current, thereby checking whether the coincidence phase is accurately coincident. Therefore, whether the coincidence phase is coincident between the three-phase voltage and the three-phase current can be checked, and a function of a reverse phase detector and a function of a coincidence phase checker can be implemented. Also, the three-phase voltage and the three-phase current can be accurately detected.