US 12,320,479 B1
Optical water curtain system adaptive to water speed
Bo Liang, Guangzhou (CN); Ziqin Guo, Guangzhou (CN); and Huaibin Zhao, Guangzhou (CN)
Assigned to Guangzhou Rising Dragon Recreation Industrial Co., Ltd., Guangzhou (CN)
Filed by Guangzhou Rising Dragon Recreation Industrial Co., Ltd., Guangzhou (CN)
Filed on Sep. 26, 2024, as Appl. No. 18/896,959.
Claims priority of application No. 202421168772.1 (CN), filed on May 27, 2024.
Int. Cl. F21S 10/00 (2006.01); F21V 3/06 (2018.01); F21Y 115/10 (2016.01)
CPC F21S 10/002 (2013.01) [F21V 3/063 (2018.02); F21Y 2115/10 (2016.08)] 7 Claims
OG exemplary drawing
 
1. An optical water curtain system adaptive to water speed, comprising a water supply portion and at least one water collecting portion; wherein the optical water curtain system further comprises a physical rotor, a control module, and an LED light-emitting module and a rotation speed detecting module electrically connected to the control module;
wherein the water supply portion is in fluid communication with the water collecting portion, and one side of the water collecting portion is provided with a number of outlets, water from the water supply portion flows down through the number of outlets of the water collecting portion to form a water curtain; the LED light-emitting module is provided at the side of the water collecting portion where the number of outlets are located, and emits light to illuminate the water curtain; the physical rotor is located within the water curtain and is rotatable under an impulse of a water flow from the water curtain;
wherein the rotation speed detecting module is configured to detect a rotation speed of the physical rotor and send data to the control module;
wherein the control module is configured to adjust a frequency of a PWM signal driving the LED light-emitting module to switch a light-emitting effect of the LED light-emitting module according to the rotation speed of the physical rotor;
wherein the rotation speed detecting module comprises a rotation speed detecting circuit, and the rotation speed detecting circuit comprises a rotation speed detecting sensor configured for detecting the rotation speed of the physical rotor; and
wherein the rotation speed detecting sensor is a laser velocimetry sensor configured for detecting a frequency of reflection of a laser signal emitted from the laser velocimetry sensor to the physical rotor, to thereby obtain the rotation speed of the physical rotor.