A utility pole degradation detection system according to the present disclosure includes: a sensing optical fiber (10) laid on a plurality of utility poles (30); a receiving unit (201) that receives vibration information detected by the sensing optical fiber (10); an identifying unit (202) that identifies a natural frequency of each of the plurality of utility poles (30) on the basis of the vibration information; and an analyzing unit (203) that analyzes a degradation state of at least one utility pole (30) among the plurality of utility poles (30) on the basis of a natural frequency of each of the plurality of utility poles (30).

Apparatus and methods are employed to install fiber optic cables in a data center facility using one or more cable dispensing robots that dispense fiber optic cable that is pre-spooled on a cable cartridge, by programmatically unspooling the cable from the cable cartridge and paying the cable out along a potentially transverse oscillatory path (e.g. sinusoidal curve) as the robot moves down a cable tray network that is arranged adjacent and above large numbers of equipment bays. A controller accesses a database which stores the state of the cables within the cable tray network. The database further stores information regarding availability of cable cartridges of standard cable lengths, which are potentially stored within a cable cassette loading/unloading system. The controller receives instructions on where and how to spatially deploy a fiber optic interconnect cable within the tray network of the data center facility.

Apparatus and methods are employed to install fiber optic cables in a data center facility using one or more cable dispensing robots that dispense fiber optic cable that is pre-spooled on a cable cartridge, by programmatically unspooling the cable from the cable cartridge and paying the cable out along a potentially transverse oscillatory path (e.g. sinusoidal curve) as the robot moves down a cable tray network that is arranged adjacent and above large numbers of equipment bays. A controller accesses a database which stores the state of the cables within the cable tray network. The database further stores information regarding availability of cable cartridges of standard cable lengths, which are potentially stored within a cable cassette loading/unloading system. The controller receives instructions on where and how to spatially deploy a fiber optic interconnect cable within the tray network of the data center facility.

A method for overhead transmission line installation includes tension pulling a transmission line over a path between a first support structure having a first mounting location and a second support structure having a second mounting location extending from the first mounting location to a first transition location on the second support structure, to a second transition location on the first support structure, and to the second mounting location. The transmission line is mounted at the first mounting location and the second mounting location. The mounting provides a slack portion of the transmission line between the first mounting location and the second mounting location. A portion of the slack portion is mounted proximate to the first mounting location or the second mounting location to provide an overhead transmission line extending between the first mounting location and the second mounting location and a remainder of the slack portion.

A system is provided for guiding a dielectric cable from a conductor to an elevated support structure. The system comprises: an insulator arranged to be attached to a conductor. The insulator comprises a first bore for receiving a dielectric cable. The system further comprises an earth bond extending to a lower end of the insulator; and a downpipe extending between first and second ends. The first end of the downpipe is connected to the lower end of the insulator and the second end of the downpipe is arranged to be supported by an elevated support structure. The downpipe is for receiving the dielectric cable from the bore of the insulator.

Embodiments of a tensile strength limiting system are provided. The tensile strength limiting system is configured to cause breakage of an optical fiber cable at a predetermined tensile loading below a tensile strength of the optical fiber cable. The tensile strength limiting system includes a force limiter configured for attachment to the optical fiber cable strung on an aerial pole and a restriction through which the optical fiber cable is configured to be looped. At the predetermined tensile loading, the force limiter is configured to allow the optical fiber cable to pull through the restriction; and the restriction is configured to force the optical fiber cable to bend below a minimum bend radius of a strength member within the optical fiber cable such that the strength member breaks.

Object-sensing systems including a light transmitter subsystem and a light receiver subsystem. The light transmitter subsystem main be configured to generate a collimated linear beam of light at a predetermined wavelength and having a length of at least 3 inches. The light receiver subsystem may include a linear sensor array having a length of at least 3 inches. The linear sensor array may be positioned to receive the collimated linear beam of light and to detect shadows caused by objects blocking at least a portion of the collimated linear beam of light. Various other systems and methods are also disclosed.

There is provided a method of installing spiral hangers about a messenger line installed between first and second utility poles with a cable being lashed to the messenger line with a lashing wire. The method includes attaching a first and second spiral hangers to the messenger line between first and second utility poles with the first spiral hanger disposed about the messenger line and the cable. The method includes removing the lashing wire from being around the messenger line and the cable adjacent the second spiral hanger. The method includes moving the second spiral hanger towards the second utility pole. The method includes attaching a successive spiral hanger to the messenger line between the spiral hangers, and repeating the moving of the second spiral hanger and attaching another successive spiral hanger.

An optical cable wiring method, includes: installing a bundle of optical cables from a utility pole as a starting point of a first wiring path to a branch point on the first wiring path; dividing, at the branch point, the bundle of optical cables into a first group and a second group; installing one of the optical cables in the first group along the first wiring path ahead of the branch point; and installing one of the optical cables in the second group along a second wiring path branching from the first wiring path.

An optical cable wiring method, includes: installing a bundle of optical cables from a utility pole as a starting point of a first wiring path to a branch point on the first wiring path; dividing, at the branch point, the bundle of optical cables into a first group and a second group; installing one of the optical cables in the first group along the first wiring path ahead of the branch point; and installing one of the optical cables in the second group along a second wiring path branching from the first wiring path.