150results about "Electrical apparatus interference reduction" patented technology

This disclosure describes an invention that that mutes specific talkers using at least one beamforming microphone array 102 that is configured to generate N audio signals 108 where each audio signal is associated with a spatial pickup pattern 130, the microphone array(s) 102 are located in a room 200; a processor 104 and memory 105 operably coupled to the microphone array 102, the processor 104 configured to execute the following steps: (a) selectively mute or unmute an individual talker the room with a mute function 106 that controls whether to mute or unmute the individual talker T1-T7 that is picked up by one or more of the individual audio signals, the mute function 106 includes speech learning that learns to identify different talkers in real time to allow the mute function 106 to identify transitions from one talker to another talker in the room 200, (b) output an audio signal 110 based on the selective muting of the talkers T1-T7 in the room 200.

The present invention provides a common-mode transient suppression protection circuit for a digital isolator, including a modulation circuit, a demodulation circuit and an isolation capacitor connected between the modulation circuit and the demodulation circuit. The modulation circuit includes a modulation circuit front-end and a drive circuit, which are connected in sequence, and a clamping module is arranged in the drive circuit. The protection circuit further includes a linear voltage regulator structure connected with the drive circuit, and a power supply clamp is arranged in the linear voltage regulator structure. By providing the linear voltage regulator structure having the power supply clamp and the drive circuit having the clamping module in the protection circuit, low-voltage devices in the drive circuit can be protected from being damaged by high-voltage signals generated by common-mode transient interference.

The invention discloses gap detection equipment and a capacitance detection device thereof, which are applied to the technical field of signal detection, and comprise a bipolar capacitive sensor which is provided with a first detection electrode and a second detection electrode and is used for outputting a first capacitance signal and a second capacitance signal which reflect the capacitance of a detected position; the excitation generation circuit is used for applying excitation to the first capacitance signal and the second capacitance signal based on the first excitation carrier and the second excitation carrier which are symmetrical and opposite in phase to obtain a modulated first detection signal and a modulated second detection signal; the capacitance-voltage conversion circuit is used for receiving the first detection signal and the second detection signal and carrying out conversion from a capacitance signal to a voltage signal and signal amplification in a differential amplification mode to obtain a first conversion signal and a second conversion signal; and the detection processing circuit performs phase-sensitive demodulation to obtain a phase-sensitive demodulation result and extracts a detection result of the capacitance corresponding to the detected position from the phase-sensitive demodulation result. According to the scheme of the invention, the common-mode interference suppression capability is high, and the precision of capacitance detection is effectively improved.

The invention discloses an unmanned aerial vehicle noise elimination method and device for cross-medium direct acoustic communication, and the method comprises the steps: carrying out the sampling of a known detection signal and a receiving signal, obtaining a frequency domain expression, calculating a cross-medium sound pressure transmission function, and extracting amplitude response, phase response and group delay; based on a normalization ratio and local maximum detection method, identifying a center frequency set of unmanned aerial vehicle propeller noise; the notch depth, bandwidth, frequency compensation and phase compensation are determined by combining channel characteristic parameters, and a cascade notch filter is constructed; and inputting the channel characteristic parameters into the deep learning model, outputting a filter parameter correction amount, realizing dynamic updating of the filter, obtaining the filter capable of suppressing noise, and further obtaining a denoised communication signal. According to the invention, precise detection of propeller noise frequency and multi-dimensional adaptive adjustment of filter parameters can be realized.

The invention relates to the technical field of transformers, in particular to a signal transformer for multi-path signal coupling of a low-voltage power grid, the signal transformer comprises a magnetic core, an inlet wire winding and an outlet wire winding, efficient electromagnetic coupling and isolation of multi-path signals are achieved through the magnetic core, and a main control chip can send control signals to equipment through a driver and a coupling winding. And receiving an equipment feedback signal. The system can extract characteristics of a control signal and a feedback signal in real time, dynamically calculate a comprehensive crosstalk index, and adaptively adjust parameters of a receiving filter and a driver according to the comprehensive crosstalk index, so that signal crosstalk caused by physical coupling among multiple channels is effectively inhibited. According to the scheme, the structure is simplified, the system cost is reduced, the communication quality and the anti-interference capability of multiple paths of signals in a low-voltage power grid are remarkably improved, and the system is suitable for multiple occasions such as high-reliability power line communication.

Embodiments of a method and apparatus for communications are disclosed. In an embodiment, a communications device includes a controller configured to perform periodic or aperiodic in-device interference mitigation and a wireless transceiver configured to conduct wireless communications in response to the periodic or aperiodic in-device interference mitigation.

Interface devices and systems that include interface devices are disclosed. In some implementations, a device includes a transceiver configured to transmit and receive data, a lane margining controller in communication with the transceiver and configured to control the transceiver to transmit, through a margin command, to an external device, a request for requesting a state of an elastic buffer of the external device, and control the transceiver to receive the state of the elastic buffer of from the external device, and a port setting controller adjust a clock frequency range of a spread spectrum clocking scheme based on the state of the elastic buffer.

A method of protecting an RF system from destructive effects of hazardous electromagnetic interference (EMI) comprises separating incoming electromagnetic radiation including hazardous electromagnetic interference according to frequency into low frequency spectral components below a selectable cutoff frequency and high frequency spectral components above the selectable cutoff frequency, and routing the low frequency portion of spectral components which include a vast majority of energy contained in the hazardous electromagnetic interference to ground via a low impedance conductor.

The invention provides a WAPI access module driver-free access method, which comprises the following steps: acquiring a transient electromagnetic pulse intensity magnitude of a WAPI access module in substation deployment, recording data packet error code position distribution, acquiring an actual distance measurement result of the module and a terminal, and forming a comprehensive monitoring record; identifying an interference area division boundary according to the comprehensive monitoring record, extracting an anti-interference shielding demand level and an anti-interference frequency band coverage range, and obtaining a specific interference intensity magnitude distribution file of the area; according to the thickness partition candidate implementation scheme, identifying the influence degree of the volume increase of the shielding layer on the installation position far away from the communication node, and obtaining a signal path extension risk assessment result; and evaluating the communication delay increase and the signal attenuation degree when the signal path extension risk evaluation result exceeds the drive-free access allowable range, and generating an adjusted shielding layer thickness partition implementation scheme.

An electronic device according to one embodiment comprises: a first communication module for first wireless communication; a second communication module for second wireless communication; a spread spectrum clock generator for generating a spread spectrum clock signal for data communication of the electronic device; and a processor which: when a communication state change event of the electronic device occurs, sets the spread spectrum method and spread ratio to a first spread spectrum method and a first spread ratio, respectively, in the spread spectrum clock generator; confirms whether the electronic device is connected to the first wireless communication and the second wireless communication; when the electronic device is connected to one or more of the first wireless communication or the second wireless communication, confirms the frequency band of the channel of the connected wireless communication; confirms whether at least one of a first frequency in a first operating frequency range or multiple frequencies of the first frequency is in the frequency band of the channel; and, when the first frequency and the multiple frequencies of the first frequency are not in the frequency band, maintains the first spread spectrum method and the first spread ratio such that the spread spectrum clock generator generates a spread spectrum clock signal on the basis of the first spread spectrum method and the first spread ratio, wherein the first operating frequency range is determined on the basis of a center frequency of data communication, the first spread spectrum method, and the first spread ratio. Various other embodiments may be possible.

The utility model relates to the field of communication equipment, in particular to anti-interference communication transmission equipment. The device comprises a shielding shell, a plurality of interfaces, a data connector, a shielding layer and a partition plate, the shielding shell comprises an outer layer, a middle layer and an inner layer, the outer layer is connected to the inner side in a sleeved mode, the middle layer is located between the inner layer and the outer layer, the multiple interfaces are formed in one side of the shielding shell, and the data connector is inserted into any one of the multiple interfaces. The shielding layer is connected to the outer layer of a cable of the data connector in a sleeved mode, the partition plate is arranged in an inner containing space of the shielding shell and divides the shielding shell into a power source area, a signal processing area and a transmission area, the power source area is communicated with the interfaces, and the signal processing area is communicated with the transmission area. The signal processing area and the transmission area are both located on one side of the power supply area.

An inductor device includes an 8-shaped inductor and a ring-type wire. The ring-type wire is disposed around an outer side of the 8-shaped inductor. The 8-shaped inductor includes an input terminal and a center-tapped terminal. The input terminal of the 8-shaped inductor is located on a first side of the inductor device, and the center-tapped terminal is located on a second side of the inductor device. The ring-type wire includes an input terminal and a ground terminal. The input terminal of the ring-type wire is located on the first side of the inductor device, and the ground terminal is located on the second side of the inductor device. The input terminal of the ring-type wire is coupled to the input terminal of the 8-shaped inductor.

A communication system for use in a vehicle includes a first communication device configured for operation in the vehicle, and a second communication device configured for operation in the vehicle. A cable assembly communicatively couples the first communication device with the second communication device. A signal suppressing device is coupled to the cable assembly at a location proximate to an end of the cable assembly. The signal suppressing device is configured to suppress signals in a frequency range corresponding to in-band radiated emission (RE).

A charging method and device are provided, to reduce interference on a module component in a terminal device in a process in which the charging device charges the terminal device. The charging method includes: obtaining, by a charging device, a working status of a sensitive module component in a terminal device, where the sensitive module component is a module component that is interfered with in a process in which the charging device charges the terminal device at a sensitive frequency, and the sensitive frequency is within a range of a charging frequency band of the charging device; when the working status is an enabled state, determining, by the charging device, a safe charging parameter, where the safe charging parameter includes at least one of a safe charging frequency, a safe charging current, and a safe charging voltage; and charging, by the charging device, the terminal device by using the safe charging parameter, where in a process in which the wireless charging device charges the terminal device by using the safe charging parameter, the sensitive module component operates normally.