US 11,987,332 B2
Control system for boat lift
Matt Brown, Jacksonville, FL (US); Dustin Smith, Jacksonville, FL (US); Paul Berkemeier, Grand Rapids, MI (US); and Mark Austin, Bristol, IN (US)
Assigned to Premier Remotes and Products, LLC, Jacksonville, FL (US)
Filed by Premier Remotes and Products, LLC, Jacksonville, FL (US)
Filed on May 18, 2022, as Appl. No. 17/747,161.
Claims priority of provisional application 63/192,879, filed on May 25, 2021.
Prior Publication US 2022/0380007 A1, Dec. 1, 2022
Int. Cl. B63C 3/06 (2006.01); E02C 5/00 (2006.01); H02P 1/40 (2006.01)
CPC B63C 3/06 (2013.01) [E02C 5/00 (2013.01); H02P 1/40 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A control system for controlling at least one motor on a boat lift, the control system comprising:
a processor configured to output a first digital-relay control signal and a first power-isolation relay control signal;
a first digital relay including a control input, a high-voltage input, and a high-voltage output, wherein the control input of the first digital relay is configured to receive the first digital-relay control signal from the processor, wherein the high-voltage input of the first digital relay is configured to receive high voltage, wherein the high-voltage output of the first digital relay is configured to selectively output the high voltage based on a state of the first digital-relay control signal;
a first power-isolation relay configured to selectively isolate the high voltage from a first motor, wherein the first power-isolation relay includes a control input, a high-voltage input, and a high-voltage output, wherein the control input of the first power-isolation relay is configured to receive the first power-isolation relay control signal from the processor, wherein the high-voltage input of the first power-isolation relay is configured to receive the high-voltage from the output of the first switching component, wherein the high-voltage output of the first power-isolation relay is configured to selectively supply the high voltage to the first motor based on a state of the first power-isolation relay control signal;
wherein the processor is configured to cause the first motor to be energized by:
changing a state of the first power-isolation relay control signal to actuate the first power-isolation relay, such that the high-voltage input of the first power-isolation relay becomes electrically connected to the high-voltage output of the first power-isolation relay, and
after said changing the state of the first power-isolation relay control signal to actuate the first power-isolation relay, changing a state of the first digital-relay control signal to activate the first digital relay, such that the high-voltage input of the first digital relay becomes electrically connected to the high-voltage output of the first power-isolation relay; and
wherein the processor is configured to cause the first motor to be de-energized by:
changing a state of the first digital-relay control signal to deactivate the first digital relay, such that the high-voltage input of the first digital relay becomes electrically disconnected to the high-voltage output of the first digital relay, and
after said changing the state of the first digital-relay control signal to deactivate the first digital relay, changing a state of the first power-isolation relay control signal to de-actuate the first power-isolation relay, such that the high-voltage input of the first power-isolation relay becomes electrically disconnected from the high-voltage output of the first power-isolation relay.