Systems and methods for tamper proof cables are described herein. In certain implementations, a system includes one or more pieces of equipment and one or more tamper proof cables connecting the equipment within a network. A tamper proof cable includes a core that provides a transmission medium through the cable; an insulator enveloping the core; a first conductive braid encircling the insulator; a dielectric enveloping the first conductive braid; and a second conductive braid encircling the dielectric, the first and second conductive braids, and the dielectric forming a capacitor. The system includes one or more detectors, each detector coupled to the tamper proof cables, each detector and an associated capacitor forming a tuned circuit, the detectors providing a signal when an associated portion of the tamper proof cables is tampered with; a monitor coupled to the detectors that notifies an infrastructure management system when the signal is received.

Systems and methods for detecting leakage in a cable network system are disclosed. In at least some illustrative embodiments, a system may include a digital tagger operable to generate a digital tag including a chirp signal configured to be placed on a downstream signal path of the cable network system, and a cable network test instrument configured detect the digital tag in wireless signal data received from the cable network system when a point of ingress is presented in the cable network system. The network test instrument may be operable to provide a user-perceptible indication when the digital tag is detected to inform a technician or other user that a flaw in the cable network system is nearby.

Systems and methods for detecting leakage in a cable network system are disclosed. In at least some illustrative embodiments, a system may include a digital tagger operable to generate a digital tag including a chirp signal configured to be placed on a downstream signal path of the cable network system, and a cable network test instrument configured detect the digital tag in wireless signal data received from the cable network system when a point of ingress is presented in the cable network system. The network test instrument may be operable to provide a user-perceptible indication when the digital tag is detected to inform a technician or other user that a flaw in the cable network system is nearby.

Disclosed are various embodiments for a self-monitoring conducting device that responds to strain and temperature changes. In one example, a self-monitoring conducting device comprises a superconducting cable having a core and one or more layers of high-temperature superconductor (HTS) tape architecture surrounding the core. The self-monitoring conducting device further includes optical fibers integrated within the superconducting cable. The optical fibers can monitor a state of the superconducting cable along a length of the superconducting cable.

A sensor line, a measuring arrangement and a method detect a change in an ambient variable. The sensor line serves for detecting a change in an ambient variable, in particular the temperature. The sensor line has a first optical waveguide, a second optical waveguide and also a material that changes its transparency depending on the value of the ambient variable. The material is positioned between the first optical waveguide and the second optical waveguide in such a way that light from the first optical waveguide is able to be coupled into the second optical waveguide in an event of a change in the transparency.

The present invention provides a leakage detection cable and a method for manufacturing the same, and the leakage detection cable detects a leaking liquid and includes: an electric wire core which includes one or more conductive wires, and a sheath layer that covers the one or more conductive wires; a detection unit which is coupled in a longitudinal direction of a surface of the electric wire core; and a first braided layer which is braided with non-conductive fibers and covers the detection unit, in which the detection unit has a predetermined resistance value that is proportional to a length, and reacts with the liquid such that an output electric current value is changed.

The present invention provides a leakage detection cable and a method for manufacturing the same, and the leakage detection cable detects a leaking liquid and includes: an electric wire core which includes one or more conductive wires, and a sheath layer that covers the one or more conductive wires; a detection unit which is coupled in a longitudinal direction of a surface of the electric wire core; and a first braided layer which is braided with non-conductive fibers and covers the detection unit, in which the detection unit has a predetermined resistance value that is proportional to a length, and reacts with the liquid such that an output electric current value is changed.

A high voltage system for an electrified vehicle includes a first high voltage component, a second high voltage component, and a high voltage cable. The high voltage cable provides power between a first location of the first high voltage component and a second location of the second high voltage component. The high voltage cable includes a core, a sheath disposed around and along the core, and one or more detection layers at least one of (a) disposed around and along the sheath or (b) disposed within the sheath. The one or more detection layers are configured to facilitate detecting at least one of (a) damage or wear to the sheath or (b) a location of the damage or wear along the sheath.

Systems, methods and tools for the interrogation of fiber-reinforced composite strength members to assess the structural integrity of the strength members. The systems and methods utilize the transmission of light through optical fibers that are embedded along the length of the strength members. The inability to detect light through one or more of the optical fibers may be an indication that the structural integrity of the A strength member is compromised. The systems and methods may be implemented without great difficulty and may be implemented at any time in the life cycle of the strength member, from production through installation. The systems and methods have particular applicability to bare overhead electrical cables that include a fiber-reinforced strength member.

A cable with a signal detection function includes an core, a second insulating layer, and a signal detection layer. The signal detection layer is for transmitting signal data. The cable further includes a second insulating layer, and plural signal detection layers provided for transmitting signal data. The signal detection layer and the cores are disposed inside the second insulating layer, and the signal detection layer is cladded with plural cores. If the first insulating layer in the signal detection layer is damaged, the signal detection layer will be electrically connected to the conductor assembly. The cable with the signal detection function can detect the abnormality of the core through the signal detection layer to facilitate maintaining and repair the cable.