A power line communication apparatus includes a first power line communication device disposed at a signal transmit end, a second power line communication device disposed at a signal receive end, a power line, a first magnetic ring disposed at the signal transmit end, and a second magnetic ring disposed at the signal receive end. The second power line communication device receives the modulated signal from the power line. The power line includes a wire for transmitting electric energy and a shield layer that wraps the wire for electromagnetic shielding. The wire and the shield layer separately extend from the signal transmit end to the signal receive end. The first magnetic ring and the second magnetic ring are separately coupled to the shield layer, to suppress inductance attenuation of the magnetic ring and improve reliability of the transmitted modulated signal.

A vehicle and a method for controlling the same are disclosed. The vehicle may include a plurality of charging ports electrically coupled to a first connector and a second connector, each of the first and second connectors configured to receive power from at least one charger; and a controller configured to receive a charging start command and, upon receiving the charging start command, to control operation of the vehicle to be sequentially paired with the first connector and the second connector when the first connector and the second connector are electrically coupled to the plurality of charging ports.

The present disclosure relates to an electronic device, a method, and a storage medium for enhancing upstream transmission performance. In an embodiment, a cable modem termination system (CMTS) can be configured to acquire first transmission performance of an upstream channel of a cable modem (CM) based on receiving service flow transmission from the CM; and, in response to the first transmission performance of at least one upstream channel of the CM being lower than a first threshold, instruct the CM to stop or suspend the service flow transmission through the at least one upstream channel. In an embodiment, the CM can be configured to receive a first instruction from the CMTS during the transmission of the service flow through the upstream channel; and, in response to receiving the first instruction, stop or suspend the service flow transmission through the at least one upstream channel.

Provided is a zero crossing point signal output method, including: continuously receiving zero crossing point square wave signals, and periodically sampling zero crossing point square wave signals at a predetermined sampling frequency; acquiring sampling numbers of 1.sup.st to M.sup.th zero crossing point square wave signals to obtain an average sampling number S, and calculating a first zero crossing point interval T1; setting a zero crossing point signal output interval as the first zero crossing point interval T1; continuously outputting zero crossing point signals with an interval being the zero crossing point signal output interval; obtaining sampling numbers of M+1.sup.th to M+N.sup.th zero crossing point square wave signals, calculating a difference value between each of the sampling numbers and S, and obtaining an accumulated difference value Δs through calculation; when Δs is not within a predetermined change range, obtaining a second zero crossing point interval T2 and setting the zero crossing point signal output interval as T2; and when Δs is within the predetermined change range, keeping the zero crossing point signal output interval unchanged.

The present disclosure relates to an electronic device, a method, and a storage medium for enhancing upstream transmission performance. In an embodiment, a cable modem termination system (CMTS) can be configured to acquire first transmission performance of an upstream channel of a cable modem (CM) based on receiving service flow transmission from the CM; and, in response to the first transmission performance of at least one upstream channel of the CM being lower than a first threshold, instruct the CM to stop or suspend the service flow transmission through the at least one upstream channel. In an embodiment, the CM can be configured to receive a first instruction from the CMTS during the transmission of the service flow through the upstream channel; and, in response to receiving the first instruction, stop or suspend the service flow transmission through the at least one upstream channel.

A reporting device for association with an article having power requirements is provided, where the reporting device is capable of performing communications operations, for example to specify the article's power requirements, and power supply using a single pair of conductors. Communications are performed at a lower voltage than the voltage intended for power supply operations. Optionally the communications interface of the reporting device may be disconnected at higher voltages, and the operational circuits of the reporting device may be disconnected at lower voltages, and circuits preventing inversion of voltages across the conductors, or reverse currents when the operational circuits are connected to the conductors may be provided. The reporting device may be used in connection with charging surfaces providing a matrix of conductive surfaces, and supports operation with a corresponding coupling manager.

Controlling electric vehicle (EV) charging operation by controlling capturing, from a pilot line communicatively linking an EV with an EV charging apparatus, at least one signal of a pulse width modulated (PWM) signal or power line communication (PLC) signal indicating EV charging session information associated with charging the EV by the charging apparatus; determining, from session success information from a controller of the charging apparatus, whether to analyze the EV charging session information; and when the session success information is determined to not indicate successful completion of an EV charging session, extracting the EV charging session information from the at least one signal according to Internet protocol layer, and analyzing the extracted EV charging session information to determine a marginal operating condition or a failure condition associated with an EV charging session.

The invention relates to a method of estimating an electrical length of a line, which is the signal loss measured at a predetermined frequency such as 1 MHz, compensated for impairments on the line. Firstly, the H log(f) data representing the attenuation plotted against frequency is gathered for the line. Secondly, data transformation is performed on the H log(f) data, such as by dividing by the square root of frequency. This compensates for changes in the loss as a function of frequency, allowing values of the loss from a broader range of frequencies to be used. Thirdly, data spike removal is performed on the transformed data, removing spikes that can arise from a number of factors such as excessive noise. The resulting data is then used to estimate a value for compensated k10.

Examples for logical to physical mapping of aircraft electronic components are presented. A system may include aircraft electronic components coupled sequentially to a power wire, corresponding controllers, and a master computing device. The computing device may receive a first identifier for a first component from a first controller in response to the first controller receiving power at a first time from the power wire and a second identifier for a second component from a second controller in response to the second controller receiving power at a second time from the power wire. The second time is subsequent to the first time. The computing device determines locations for the first and second component within the aircraft based on an order of reception of the identifiers.

A PLC network system and method operative with OFDM for generating MIMO frames with suitable preamble portions configured to provide backward compatibility with legacy PLC devices and facilitate different receiver tasks such as frame detection and symbol timing, channel estimation and automatic gain control (AGC), including robust preamble detection in the presence of impulsive noise and frequency-selective channels of the PLC network. A PLC device may include a delayed correlation detector and a cross-correlation detector operating in concert to facilitate preamble detection in one implementation.