12 results about "Digital cable" patented technology

Disclosed herein are compositions and methods relating to fine aggregate for a Controlled Low-Strength Material (CLSM) recycled from a consumer waste stream of bottle glass. Such disclosed compositions may be advantageous, for example, for backfilling trenches in street cuts for utility repairs or new utility installations, such as digital cables. The disclosed compositions that incorporate the recycled glass aggregate into a CLSM that achieves satisfactory compressive strengths. The disclosed compositions are not negatively impacted by Alkali-Silica Reactivity causing expansion.

The invention discloses a high-speed connector and a cable assembly, and aims to solve the problems that a mounting nut of a traditional connector is easy to loosen, the impedance consistency is poor and the structure is unstable. The high-speed connector socket is of a bent rectangular structure, a base assembly is embedded in a metal base shell, a metal cover plate is fixed through small screws and abuts against the base assembly, and the metal cover plate is fixed to a panel through a small screw assembly and is separated from an installation nut assembly used for locking a plug. Nut loosening is avoided; the plug cable assembly is of a straight rectangular structure and comprises a connector plug, a digital cable and pouring sealant, A-type and B-type PCBs of the connector plug are welded with the digital cable and then installed on the head base and then embedded in the metal head shell, after the wire clamp shell is sleeved, the pouring sealant is solidified into a whole, and signal pairs of the B-type PCBs are arranged in a staggered mode relative to the A-type PCBs. Connection reliability and impedance consistency are improved, cost is reduced, and an external high-speed connection interface of a case or a module is adapted.

To enable more appropriate processing of control information.SOLUTION: A conversion unit that converts first control information transmitted in a physical layer defined in a first broadcasting scheme that is a broadcasting scheme of terrestrial digital television broadcasting into second control information to be transmitted in an upper layer that is an upper layer of the physical layer defined in a second broadcasting scheme that is a broadcasting scheme of digital cable television broadcasting, in which the second broadcasting scheme employs an IP scheme, and the second control information is included in signaling information related to transmission control and is transmitted by a TLV packet, the signaling information being used in the second broadcasting scheme. The present disclosure is applicable to, for example, a retransmission device for retransmitting terrestrial digital television broadcasting.SELECTED DRAWING: Figure 3

The invention discloses a parameter identification method, device and equipment for a digital cable and a storage medium, and the method comprises the steps: obtaining a to-be-identified parameter vector and the actual measurement temperature of each layer of material of the digital cable, the to-be-identified parameter vector being the heat conductivity coefficient of each layer of material of the digital cable; the to-be-identified parameter vector is input into a preset adaptive particle swarm algorithm to obtain a candidate optimal parameter vector, the adaptive particle swarm algorithm performs iterative optimization on the to-be-identified parameter vector based on a target function, and the target function is obtained through calculation based on the deviation between the predicted temperature and the actually measured temperature of each layer of material of the digital cable; under the condition that the target function value corresponding to the candidate optimal parameter vector meets the preset convergence condition, the candidate optimal parameter vector is determined as a target optimal parameter vector, and the target optimal parameter vector is the identification result of the to-be-identified parameter corresponding to the to-be-identified parameter vector. Therefore, the real-time identification requirement of the digital cable on the heat conductivity coefficient parameter under the complex dynamic working condition can be effectively met.

The invention discloses a sensing type double-current digital cable, and relates to the technical field of special cables. The cable comprises a cable body, the cable body comprises a conductor layer, an insulating layer, a sensing layer, a shielding layer, a communication layer and a sheath layer, and the conductor layer, the insulating layer, the sensing layer, the shielding layer, the communication layer and the sheath layer are sequentially distributed from inside to outside; the system is compact in structure, can realize accurate early warning of faults, shortens the operation and maintenance response time to a second level, reduces data transmission delay, improves the system response speed, is high in anti-interference capability, can enable the bit error rate to be low in a strong electromagnetic interference environment through the combination of distributed sensing and a differential communication technology, and is high in reliability. Signal integrity can be effectively improved, functions are highly integrated, triple functions of electric energy transmission, state sensing and data communication can be fused, and wiring complexity can be effectively reduced.

This utility model relates to the field of digital cable technology, specifically a Category 6a shielded digital communication cable, comprising a digital cable, a retainer fixedly connected to the right side of the digital cable, a cable connector fixedly connected to the right side of the retainer, and a cable bundling mechanism fixedly connected to the upper outer wall of the digital cable. The digital cable includes a cable sheath, and a cable tray is provided inside the cable sheath, with twisted pairs arranged inside the cable tray. This utility model's single-line cable tray effectively increases the flexibility of the digital cable, while the cable bundling mechanism effectively prevents the digital cable from being dragged on the ground and damaged by compression, thus improving the stability and protection of the device.

The invention discloses a method for predicting the temperature of a digital cable and a related product, and the method comprises the steps: obtaining a digital cable temperature data set which comprises multi-dimensional temperature data and multiple single-dimensional temperature data; a plurality of physical information neural networks are constructed based on the multiple single-dimension temperature data; the features of the multiple physical information neural networks are fused to obtain a fusion result, and the fusion result is used for initializing parameters of a preset initial physical information neural network; and training the initial physical information neural network based on the multi-dimensional temperature data to obtain a target physical information neural network, the target physical information neural network being used for predicting temperature distribution of the digital cable under given current-carrying capacity and radial position conditions. Therefore, the stability and the accuracy of temperature prediction of the digital cable under multiple working conditions are effectively improved.

The invention discloses a gradient pitch special-shaped sheath digital cable and a production device, and relates to the field of cable production, the gradient pitch special-shaped sheath digital cable comprises a pair twisting mechanism, a special-shaped sheath forming mechanism and an insulating layer forming mechanism, the pair twisting mechanism is used for performing pair twisting on wire cores to form wire pairs, the insulating layer forming mechanism is used for coating the wire pairs with insulating layers, and the special-shaped sheath forming mechanism is used for forming a special-shaped sheath. The special-shaped sleeve forming mechanism comprises a second plastic extruding machine, a special-shaped sleeve forming mold and a cold shrinkage ring, the cold shrinkage ring is arranged at the inlet position of the special-shaped sleeve forming mold and used for enabling the insulating layer wrapping the wire pair to shrink at low temperature, the special-shaped sleeve forming mold is used for forming a special-shaped sheath with inner matching teeth on the inner wall, and the special-shaped sheath is used for wrapping the wire pair. Guide tooth grooves matched with the outer matching teeth are formed in the special-shaped sleeve forming die, the outer matching teeth can be embedded into and meshed with the inner matching teeth through the position relation between the guide tooth grooves and the forming teeth when the insulating layer expands, accurate matching between the special-shaped sheath and the special-shaped wire pair is achieved, and automatic production of the special-shaped sheath digital cable can be achieved.

The invention relates to the technical field of digital twinning and system simulation, in particular to a digital cable modeling simulation system, which comprises a stress analysis unit used for acquiring real-time sensor data of a cable service environment to obtain main vibration frequency and amplitude; the coupling modeling unit is used for resolving to obtain mechanical stress; constructing equivalent coupling stress; the damage evolution unit is used for solving a microscopic damage accumulation variable through a damage accumulation model; the parameter correction unit is used for generating a simulation impedance value and a simulation modulus value; the closed loop verification unit is used for acquiring the real impedance value of the cable and calculating the fidelity of the degradation state; the self-adaptive correction unit is used for generating a first-stage correction signal or a second-stage correction signal, the first-stage correction signal is used for correcting a preset mapping coefficient, and the second-stage correction signal is used for correcting a preset material degradation characteristic coefficient; according to the method, unnecessary model reconstruction is avoided, and efficient, accurate and stable dynamic calibration is realized.

The application discloses a method for temperature prediction of a digital cable and related products, and the method comprises the following steps: acquiring a digital cable temperature data set, wherein the digital cable temperature data set comprises multi-dimensional temperature data and various single-dimensional temperature data; constructing a plurality of physical information neural networks based on the various single-dimensional temperature data; fusing the features of the plurality of physical information neural networks to obtain a fusion result, wherein the fusion result is used for initializing the parameters of a preset initial physical information neural network; and training the initial physical information neural network based on the multi-dimensional temperature data to obtain a target physical information neural network, wherein the target physical information neural network is used for predicting the temperature distribution of the digital cable under the conditions of a given carrying capacity and a radial position. In this way, the stability and accuracy of temperature prediction of the digital cable under multiple working conditions are effectively improved.

The application provides an underground power distribution network digital cable channel system with good automatic monitoring and protection effect, optimizes the structure of the air flow channel in the well, adds a flow guide device, removes the hot and humid air, toxic gas and combustible gas in the underground channel, and makes the air in the channel continuously fresh and replaced; a protection cover box integrated with various sensors, a communication module and a display module is arranged at the exposed end of the air inlet pipe and the air outlet pipe, a multi-source data acquisition and fusion processing system is constructed, a comprehensive thermal risk index algorithm is introduced to realize automatic state evaluation and remote alarm. The automatic distribution of air flow is realized through the shunt structure, the precise quantitative evaluation of the thermal environment of the cable channel is realized through the multi-sensor fusion and algorithm model, the unmanned intelligent operation and maintenance is realized through the remote communication and alarm mechanism, the problems of poor ventilation, unknown state and lack of early warning in the prior art are solved, and the operation safety and operation and maintenance efficiency of the underground cable channel are significantly improved.