A pole module for attachment to one or more adjacent pole modules to provide a pole assembly comprising two or more pole modules is disclosed here. The pole module comprises an elongated body that defines a cavity extending from a first end of the pole module to a second end of the pole module. The pole module further comprises a first installation interface for attaching the first end of the pole module to a second end of a first adjacent pole module and a second installation interface for attaching the second end of the pole module to a first end of a second adjacent pole module. The pole module further comprises a first connection interface and a second connection interface. A cabling arrangement is arranged in the cavity. The cabling arrangement comprises a plurality of cables connecting the first connection interface to the second connection interface.

A pole module for attachment to one or more adjacent pole modules to provide a pole assembly comprising two or more pole modules is disclosed here. The pole module comprises an elongated body that defines a cavity extending from a first end of the pole module to a second end of the pole module. The pole module further comprises a first installation interface for attaching the first end of the pole module to a second end of a first adjacent pole module and a second installation interface for attaching the second end of the pole module to a first end of a second adjacent pole module. The pole module further comprises a first connection interface and a second connection interface. A cabling arrangement is arranged in the cavity. The cabling arrangement comprises a plurality of cables connecting the first connection interface to the second connection interface.

A adapter security system adapted to be attached to a cable is taught. The adapter security system includes a wire, at least one adapter that is carried by the wire, and a clamping assembly that is adapted to attach the wire to the cable. The adapter security system provides a means of securing adapters at the location of a presentation while also providing convenient access for the user to the adapters.

A modular staging system and method includes an overhead hoist grid for lifting staging modules providing for a vast variety of combinations of the truss components for making many different kinds and shapes. This design is flexible, scalable and can be reconfigured in an accelerated manner resulting is substantial cost savings for a production.

A modular staging system and method includes an overhead hoist grid for lifting staging modules providing for a vast variety of combinations of the truss components for making many different kinds and shapes. This design is flexible, scalable and can be reconfigured in an accelerated manner resulting is substantial cost savings for a production.

A management system for a closed environmental facility includes one or more motorized tubular hoist mechanisms operable to adjust the height of environmental modules above one or more groups of plants. A central controller provides signals over a wireless communication network to command the hoist mechanisms to move the environmental modules to a desired position. In further embodiments, environmental sensors provide data to the central controller and the controller automatically calculates desired positions of the environmental modules based on the data and commands the hoist mechanisms to achieve the desired positioning.

A winch comprises a cable roll; a cable having one end fixed to the cable roll and another end configured to electrically connect an electric device to the cable, wherein the cable is further configured to provide the electric device with electric power and/or with data; a framework to which the cable roll is mounted; measuring means connected to the framework and configured to provide data related to the length of an unwound part of the cable; and processing means configured to control winding and unwinding of the cable based on data provided by the measuring means. The cable has a predetermined reference state at which a predetermined fixed reference point is at a reference position in relation to a coordinate system, wherein the length of unwound cable is defined as the distance measured along the cable, between the location of the predetermined fixed reference point and the reference position.

A winch comprises a cable roll; a cable having one end fixed to the cable roll and another end configured to electrically connect an electric device to the cable, wherein the cable is further configured to provide the electric device with electric power and/or with data; a framework to which the cable roll is mounted; measuring means connected to the framework and configured to provide data related to the length of an unwound part of the cable; and processing means configured to control winding and unwinding of the cable based on data provided by the measuring means. The cable has a predetermined reference state at which a predetermined fixed reference point is at a reference position in relation to a coordinate system, wherein the length of unwound cable is defined as the distance measured along the cable, between the location of the predetermined fixed reference point and the reference position.

Disclosed is a control method of a lifting apparatus for a highly-mounted device. The control method includes (a) outputting a descending signal in a state where the main body and the lifting body are coupled; (b) determining whether the lifting body is normally released downward from the main body according to the descending signal; and (c) stopping the driving motor or executing the step (a) again when the lifting body is not normally released downward, wherein in the step (b), it is determined whether the lifting body is normally released downward from the main body by checking whether a weight of the lifting body is applied to the wire rope.

Disclosed is a control method of a lifting apparatus for a highly-mounted device. The control method includes (a) outputting a descending signal in a state where the main body and the lifting body are coupled; (b) determining whether the lifting body is normally released downward from the main body according to the descending signal; and (c) stopping the driving motor or executing the step (a) again when the lifting body is not normally released downward, wherein in the step (b), it is determined whether the lifting body is normally released downward from the main body by checking whether a weight of the lifting body is applied to the wire rope.