Abstract: Methods, apparatus, systems and articles of manufacture are disclosed for sensing RIG positioning and vehicle restraint movement. An example method includes determining a presence of a RIG and enabling a barrier to move to an operational position when the RIG is present.

Abstract: Methods, apparatus, systems and articles of manufacture are disclosed for sensing RIG positioning and vehicle restraint movement. An example method includes determining a presence of a RIG and enabling a barrier to move to an operational position when the RIG is present.

Abstract: Pedestrian-Vehicle safety systems for loading docks are disclosed. An example system includes a first sensor system to determine a position of a vehicle relative to a pedestrian zone adjacent a dock wall of a loading dock and a second sensor system to monitor the pedestrian zone. The second sensor system to attempt to detect a pedestrian in the pedestrian zone, the second sensor system responsive to signals from the first sensor system to enable the second sensor system to dynamically change a sensing area of the pedestrian zone to maintain a delta threshold between the vehicle and the pedestrian zone in response to the vehicle moving toward a dock wall of the loading dock.

Abstract: Methods and apparatus for monitoring a dock leveler are disclosed herein. One example dock leveler system for use at a doorway of a loading dock, where a body is sometimes present at the loading dock, includes a deck movable between a raised position and a lowered position. The example dock leveler system also includes a sensor having a field of view extending over the deck when the deck is in the lowered position. The sensor is in a normal state when the deck is in the lowered position while the body is off the deck, the sensor is in a triggered state when the deck is in the lowered position while the body is on the deck interrupting the field of view, and the sensor is in the triggered state when the deck is in the raised position with the deck interrupting the field of view regardless of whether the body is on or off the deck.

Abstract: Pedestrian-Vehicle safety systems for loading docks are disclosed herein. An example safety system includes a first sensor to monitor a first area adjacent a dock, a bi-directional sensor to signal both incoming movement and outgoing movement of a vehicle relative to the dock, and an incoming sensor to signal only incoming movement of the vehicle relative to the dock. A signaling device is responsive to outputs of at least one of the first sensor, the bi-directional sensor, and the incoming sensor.

Abstract: Methods, apparatus, systems and articles of manufacture are disclosed for sensing RIG positioning and vehicle restraint movement. An example method includes determining a presence of a RIG and enabling a barrier to move to an operational position when the RIG is present.

Abstract: Various example vehicle restraints for use at a loading dock for blocking and later releasing a vehicle's rear impact guard. In some examples, the vehicle restraint includes a hook-shaped barrier that rotates between a lowered position and a raised position. The barrier rotates up to block the rear impact guard and rotates down to release it. The barrier also translates or shifts forward and back between a retracted position and an extended position. The barrier shifts forward to relieve forward pressure that the vehicle might exert against the barrier just prior to releasing the rear impact guard.

Abstract: Monitoring and alerting systems for detecting hazardous conditions at loading docks are disclosed. An example monitoring and alerting system includes a first sensor system to monitor a location of a first brace of a first dock station of the loading dock. The first brace being positionable in a first stored position, a first operative position, and a first transition position, where the first transition position is between the first stored position and the first operative position. A second sensor system is to monitor a location of a second brace of a second dock station of the loading dock adjacent the first dock station. The second brace is positionable in a second stored position, a second operative position, and a second transition position, where the second transition position is between the second stored position and the second operative position. A first signaling device at the first dock station is responsive to outputs of the first sensor system and the second sensor system.

Abstract: An example system includes pedestrian sensors to monitor a first pedestrian zone and a second pedestrian zone in front of a dock face of a loading dock. A first vehicle detector is to attempt to detect a vehicle near the first pedestrian zone and a second vehicle detector is to attempt to detect the vehicle near the second pedestrian zone. A sensor manager is to disable the first pedestrian zone when the first vehicle detector detects the vehicle approaching the first pedestrian zone and the at least one pedestrian sensors does not detect the pedestrian in the first pedestrian zone. The sensor manager is to disable the second pedestrian zone when the second vehicle detector detects the vehicle approaching the second pedestrian zone and at least one of the at least pedestrian sensors does not detect the pedestrian in the second pedestrian zone.

Abstract: Example vehicle restraints with a barrier having rotational and translational motion are described. An example vehicle restraint includes a carriage frame movable vertically relative to the dock. A drive shaft is supported by the carriage frame. A drive unit is to rotate the drive shaft about a shaft axis and relative to the carriage frame. A hub is connected to rotate with the drive shaft about the shaft axis, the hub having an outer diameter surface that is radially off center relative to the shaft axis. A barrier defines a bore that encircles the outer diameter surface of the hub. The barrier is movable selectively to an extended position and a retracted position. The barrier being connected to move selectively to the extended position and the retracted position in response to relative rotation between the outer diameter surface of the hub and the bore of the barrier.

Abstract: Pedestrian-Vehicle safety systems for loading docks are disclosed. An example system includes a first sensor system to determine a position of a vehicle relative to a pedestrian zone adjacent a dock wall of a loading dock and a second sensor system to monitor the pedestrian zone. The second sensor system to attempt to detect a pedestrian in the pedestrian zone, the second sensor system responsive to signals from the first sensor system to enable the second sensor system to dynamically change a sensing area of the pedestrian zone to maintain a delta threshold between the vehicle and the pedestrian zone in response to the vehicle moving toward a dock wall of the loading dock.

Abstract: Various example vehicle restraints for use at a loading dock for blocking and later releasing a vehicle's rear impact guard. In some examples, the vehicle restraint includes a hook-shaped barrier that rotates between a lowered position and a raised position. The barrier rotates up to block the rear impact guard and rotates down to release it. The barrier also translates or shifts forward and back between a retracted position and an extended position. The barrier shifts forward to relieve forward pressure that the vehicle might exert against the barrier just prior to releasing the rear impact guard.

Abstract: Example vehicle restraints with a barrier having rotational and translational motion are described. An example vehicle restraint includes a carriage frame movable vertically relative to the dock. A drive shaft is supported by the carriage frame. A drive unit is to rotate the drive shaft about a shaft axis and relative to the carriage frame. A hub is connected to rotate with the drive shaft about the shaft axis, the hub having an outer diameter surface that is radially off center relative to the shaft axis. A barrier defines a bore that encircles the outer diameter surface of the hub. The barrier is movable selectively to an extended position and a retracted position. The barrier being connected to move selectively to the extended position and the retracted position in response to relative rotation between the outer diameter surface of the hub and the bore of the barrier.

Abstract: An example vehicle alignment system includes a camera to detect the vehicle approaching a doorway of a loading dock. The camera to generate an image signal indicative of at least one of an angular orientation of the vehicle or a lateral position of the vehicle relative to a reference. A controller is to detect a deviation in the at least one of the angular orientation of the vehicle or the lateral position of the vehicle relative to the reference based on the image signal. A display is to generate an indication representative of the at least one of the angular orientation of the vehicle or the lateral position of the vehicle relative to the reference.

Abstract: Methods and apparatus for monitoring a dock leveler are disclosed herein. One example dock leveler system for use at a doorway of a loading dock, where a body is sometimes present at the loading dock, includes a deck movable between a raised position and a lowered position. The example dock leveler system also includes a sensor having a field of view extending over the deck when the deck is in the lowered position. The sensor is in a normal state when the deck is in the lowered position while the body is off the deck, the sensor is in a triggered state when the deck is in the lowered position while the body is on the deck interrupting the field of view, and the sensor is in the triggered state when the deck is in the raised position with the deck interrupting the field of view regardless of whether the body is on or off the deck.

Abstract: Methods and apparatus for monitoring a dock leveler are disclosed herein. One example dock leveler system for use at a doorway of a loading dock, where a body is sometimes present at the loading dock, includes a deck movable between a raised position and a lowered position. The example dock leveler system also includes a sensor having a field of view extending over the deck when the deck is in the lowered position. The sensor is in a normal state when the deck is in the lowered position while the body is off the deck, the sensor is in a triggered state when the deck is in the lowered position while the body is on the deck interrupting the field of view, and the sensor is in the triggered state when the deck is in the raised position with the deck interrupting the field of view regardless of whether the body is on or off the deck.