US 12,392,898 B2
Active distance measuring device and method of active distance measuring
Chih-Liang Chang, New Taipei (TW); and Jyun-Hong Lu, New Taipei (TW)
Assigned to GIGA-BYTE TECHNOLOGY CO., LTD., New Taipei (TW)
Filed by GIGA-BYTE TECHNOLOGY CO., LTD., New Taipei (TW)
Filed on Nov. 19, 2021, as Appl. No. 17/530,489.
Claims priority of application No. 109144582 (TW), filed on Dec. 16, 2020.
Prior Publication US 2022/0187460 A1, Jun. 16, 2022
Int. Cl. G01S 17/42 (2006.01); G01S 7/48 (2006.01); G01S 7/4865 (2020.01); G01S 17/931 (2020.01)
CPC G01S 17/42 (2013.01) [G01S 7/4808 (2013.01); G01S 7/4865 (2013.01); G01S 17/931 (2020.01)] 13 Claims
OG exemplary drawing
 
1. An active distance measuring device, comprising:
a detection wave transmitter, configured to transmit a detection wave with a designated transmission power to be reflected to form a reflected wave;
a reflected wave receiver, configured to operate at a designated detection power to receive the reflected wave and generate reflected wave information; and
a controller, electrically connected to the detection wave transmitter and the reflected wave receiver to control the detection wave transmitter to transmit the detection wave and receive the reflected wave information, so as to obtain distance information based on a transmission state of the detection wave and the reflected wave information, wherein the controller is further configured to receive a vehicle speed signal to adjust the designated transmission power and the designated detection power according to the vehicle speed signal;
wherein the controller is further configured to receive a vehicle speed increase signal, determine a predicted vehicle speed after a retention time based on the vehicle speed increase signal, and increase the designated transmission power and the designated detection power to correspond to the predicted vehicle speed.