203 results about "Signal gain" patented technology

The invention provides a transformer substation switch cabinet partial discharge detection method and system based on a sensor, and relates to the technical field of discharge detection, and the method comprises the steps: deploying an ultrasonic sensor according to a sensing collection channel, accessing a signal processing terminal, and configuring a sensor sensitivity threshold value and a signal sampling frequency; adjusting the signal gain of each monitoring node coordinate corresponding to the sensing acquisition channel, synchronously recording the monitoring time, the monitoring node coordinates and cabinet body temperature parameters, and setting a monitoring association control matrix in combination with a sensor sensitivity threshold and a signal sampling frequency; determining a partial discharge type and discharge intensity based on the signal processing terminal; and generating a discharge characteristic distribution map, and generating a partial discharge detection report in combination with the insulation performance index of the substation switch cabinet, a safe discharge threshold and a pulse frequency threshold. The technical problems that in the prior art, a transformer substation switch cabinet partial discharge detection method is poor in anti-interference capacity and low in recognition precision are solved.

The invention relates to the technical field of signal processing, and provides an intelligent sensing device electromagnetic interference suppression method and system based on AI identification, and the method comprises the steps: obtaining a multi-source electromagnetic signal set of a target intelligent sensing device in a preset monitoring period, and carrying out the electromagnetic interference feature extraction processing of the multi-source electromagnetic signal set, performing interference mode matching processing on the electromagnetic interference characteristic set based on a preset interference suppression model to generate an electromagnetic interference suppression strategy of the intelligent sensing equipment; the electromagnetic interference suppression strategy comprises a frequency band adjustment direction corresponding to an interference frequency band distribution characteristic, a signal gain compensation direction corresponding to an interference intensity fluctuation characteristic and an anti-interference filtering direction corresponding to an interference source correlation characteristic; and performing interference suppression operation on a signal acquisition module of the intelligent sensing equipment according to the electromagnetic interference suppression strategy so as to reduce the electromagnetic signal distortion rate of the intelligent sensing equipment.

Systems and techniques are described for wireless communications. For example, a network device can receive, via receive antennas, signals transmitted from one or more devices. Each receive antenna is within one group of two or more groups. The network device can adjust, using gain control modules, a power level of each signal to produce power adjusted signals. The gain control modules are within one group of the two or more groups. At least a portion of the gain control modules is associated with different gain states. The gain states are based on at least one of distances of the one or more devices from the network device or power levels of the signals transmitted from the one or more devices. The network device can process the power adjusted signals.

The invention provides an optical gain and electro-optical modulation integrated device and a preparation method thereof, and relates to the field of photoelectron, the optical gain and electro-optical modulation integrated device comprises a chip platform, and an electro-optical modulator and a gain waveguide which are integrated on the chip platform, and the chip platform is doped with rare earth ions in a region corresponding to the gain waveguide; the electro-optical modulator is used for modulating an input optical signal to obtain a modulated optical signal; and the gain waveguide is used for amplifying the modulated optical signal under the action of the pump light and the rare earth ions to obtain a target optical signal. The electro-optical modulator and the gain waveguide are integrated on the chip platform, cooperative work between the electro-optical modulator and the gain waveguide is achieved through rare earth ions, integrated design is achieved, the defects of discrete devices are overcome, and the design target of an on-chip photonic system can be met.

The invention provides an electric power meter data real-time analysis and abnormity early warning method based on edge calculation, and belongs to the technical field of data analysis and early warning, and the method comprises the steps: collecting the multi-modal data of an electric power meter based on a multi-channel analog-to-digital converter, employing a hardware filter circuit to eliminate high-frequency noise, and obtaining the data of the electric power meter; signal gain self-adaptive adjustment is carried out based on a reconfigurable amplifier; a digital signal processing accelerator is used to carry out Fourier transform on a matrix constructed by the standardized data stream, and a multi-core processor is combined to carry out analysis to generate a feature vector; the method comprises the following steps: acquiring environmental parameters in real time based on an environmental sensor, dynamically adjusting an anomaly detection threshold in combination with a machine learning model trained by historical data, and comparing a feature vector with the dynamic threshold to generate an anomaly signal; the relay control circuit triggers sound-light alarm, the physically isolated communication module sends an early warning instruction to the cloud platform, and meanwhile, the redundant power supply module is started to control the electric power meter to operate continuously. And the efficiency and accuracy of subsequent abnormity early warning are improved.

The invention relates to the field of aeronautical material detection, and discloses an aeronautical material detection method and system.The method comprises the steps that an ultrasonic detection signal is obtained, and frequency characteristic analysis is conducted on the ultrasonic detection signal to obtain a frequency spectrum; based on the frequency spectrum, the system can judge the source information of the ultrasonic detection signals, so that the ultrasonic detection signals with background tendency and the ultrasonic detection signals with defect tendency are distinguished; aiming at signals from different sources, the invention innovatively adopts a differential gain processing strategy: low gain is applied to the signals with background tendency to effectively inhibit the intensity of the signals; high gain is applied to signals with defect tendency so as to ensure that even weak real defect signals can be fully amplified and identified; performing defect judgment on the ultrasonic detection signal subjected to gain processing; the problems that misjudgment is introduced by the signal gain compensation module due to probe sensitivity attenuation and normal background signals and real defect signals are difficult to distinguish can be effectively solved.

A receiver system has at least one antenna that receives a plurality of signals, including a desired signal, across a wide band of frequencies. At least one tunable filter is in signal communication with the at least one antenna, and filters the plurality of signals to produce a plurality of filtered signals. Gain control circuitry is in signal communication with the at least one tunable filter, and produces a gain adjusted version of the filtered signals. A processing unit processes received signals in a portion of the wide band to extract signal characteristics of at least one undesired signal in the portion of the wide band. The at least one tunable filter is tuned based at least in part on the signal characteristics of the at least one undesired signal to maintain the SNR of the desired signal above a threshold level at the output of the gain control circuitry.

The invention relates to the technical field of electric energy distribution and signal energy distribution control, and discloses a product quality detection method based on machine vision, which comprises the following steps: acquiring signal energy distribution data representing product surface energy density, and mapping the signal energy distribution data to a complex frequency domain space to analyze a multi-scale phase component; constructing a local structure tensor by using a phase gradient, determining a background texture direction consistency index, establishing a phase feedback compensation mechanism, and adjusting a phase consistency weighting coefficient; according to the method, the problem of phase dispersion caused by non-uniform reflection is solved, the energy signal-to-noise ratio of the weak features is improved by dynamically adjusting the gain loop and energy distribution, and the signal-to-noise ratio of the weak features is improved. And precise quality identification under a high-reflection working condition is realized.

The invention discloses a signal acquisition system and acquisition method for pressure sensors, the signal acquisition system comprises an excitation signal generation module, a first gating module, a second gating module, a gain adjustment module and a control module, the second gating module is matched with the first gating module, so that a plurality of pressure sensors respectively output first response signals; the gain adjusting module adjusts the multiple of the first response signal and outputs a second response signal; the control module receives the second response signal, controls the excitation signal generation module to adjust the excitation signal according to the second response signal, and controls the gain adjustment module to adjust the multiple so as to adjust the second response signal; according to the technical scheme, the excitation intensity and the amplification factor are dynamically adjusted according to the response signal collected each time, and the problem that in the prior art, signal collection is too weak or saturated due to the fact that the resistance change range of a pressure sensor is large is solved.

The invention discloses a signal enhancement super-permeable membrane for multi-system and multi-band wireless communication and a preparation method thereof. Relates to the technical field of electromagnetic regulation. The signal enhancement ultra-permeable membrane is composed of a large number of equilateral metal pattern units, a PET film layer and an electric smelting quartz glass dielectric layer. Each metal pattern unit is of an axially symmetric I-shaped metal structure with adjustable length and rotation angle; the transmission phase and amplitude modulation of incident electromagnetic waves can be realized by adjusting the length of the metal wire, the radian of the metal ring and the rotation angle. Full-wave simulation shows that the metal units with different sizes are orderly arranged on the PET film and are deployed on the two sides of the electric smelting quartz glass, so that macroscopic regulation and control of incident electromagnetic waves with different frequency bands can be realized respectively, and the signal gain peak value exceeds 30dB; signal enhancement of multi-band wireless communication can be realized by adjusting structural parameters of the unit structure.

This provides a configuration that allows the UE to perform DMRS bundling in PUCCH repetitions in response to an instruction from the base station. The UE receives an instruction from the base station to perform the configuration of bundling DMRS in repetitions of uplink control channel transmissions. The UE determines the DMRS bundling window based on the configuration. The UE transmits the bundled DMRS within the DMRS bundling window. The base station processes the bundled DMRS. Improved link quality and signal gain between the UE and the base station can be achieved by applying DMRS bundling accordingly through multiple repetitions of PUCCH transmissions.

The invention provides a linear beam span sensitivity homogenization calibration method and device based on an optical attenuation model, and relates to the field of linear beam detector calibration. The method comprises the following steps: constructing an optical attenuation model based on historical data, and obtaining a calibration range corresponding table between an installation distance and an optimal calibration range; acquiring a maximum infrared signal intensity value which has the maximum system gain and is within a preset signal margin; querying an optimal calibration range corresponding to the maximum infrared signal intensity value Vmax through a calibration range corresponding table, and calculating a distance judgment reference value based on the optimal calibration range; the automatic judging device is operated to obtain the installation distance, and the optimal calibration range is determined and recorded as the target calibration range; synchronously adjusting the current gain of the transmitting end and the signal gain of the receiving end; and carrying out consistency verification on the infrared signal intensity value, and if the verification is passed, automatically setting an alarm threshold value by adopting a relative attenuation model. The technical problems of different alarm sensitivity and poor calibration consistency under different installation distances are solved.

The present application relates to the technical field of microwave sensor, in particular to a wearable multi-modal flexible microwave sensor.The present application obtains a deformation state value by analyzing deformation data, analyzes stress data to obtain a stress state value, further analyzes element connection state information, then performs corresponding adaptive adjustment according to the element connection state, obtains an adaptive adjustment result, can monitor and analyze the connection of each internal element to obtain the corresponding connection state, can facilitate the user to find abnormalities in time and increase controllability; also, the signal state is obtained by identifying the signal comprehensive parameter, the corresponding signal gain control instruction is generated, the signal gain is executed according to the signal gain control instruction, the corresponding signal abnormal information is generated according to the gain execution, the result of the signal gain is judged, the connection state is confirmed again, and the accuracy of monitoring element connection abnormality is increased.

Provided are an impedance matching circuit and method, a radio frequency circuit, and an electronic device, and belong to the technical field of electronics. The impedance matching circuit comprises a transducer, a first adjustable circuit and a first switch circuit coupled between a first coil of the transducer and a first signal end, a second adjustable circuit and a second switch circuit coupled between a second coil of the transducer and a second signal end, and a control circuit coupled with the adjustable circuits and the switch circuits. The control circuit can adjust the working parameters of the adjustable circuits and the on-off states of the switch circuits based on the input impedance and the output impedance determined under different signal gain configurations, so as to achieve impedance matching. Therefore, the impedance matching circuit can achieve better impedance matching for different signal gain configurations, and has better flexibility in impedance matching.

The utility model belongs to the technical field of avionics, and relates to Beidou No.3 positioning module detection equipment, which comprises an antenna assembly and a detector host, the detector host adopts a reinforced computer and is used for providing a power supply, a signal interface and man-machine interaction for the whole system; a Beidou command communication module and a Beidou forwarding module are arranged in the reinforced computer, and the reinforced computer is connected with a host computer module of the reinforced computer through an RS232 interface. The main computer module receives and transmits related commands through an RS232 interface, controls the Beidou command communication module and the Beidou forwarding module to work, obtains RNSS positioning information and RDSS short message information of the Beidou command module, and achieves signal gain adjustment of the Beidou forwarding module. The antenna assembly is used for transceiving data.

The utility model provides a kind of photoelectric sensor particle detection device and equipment based on double channel detection, it is related to optical particle detection technical field.The device sensor sampling circuit output end is connected with sampling signal distribution circuit input end;Sampling signal distribution circuit first output end is connected with first signal gain circuit input end, and second output end is connected with second signal gain circuit input end;First signal gain circuit output end is connected with first analog-digital conversion circuit input end;Second signal gain circuit output end is connected with second analog-digital conversion circuit input end;The gain coefficient of first signal gain circuit is greater than second signal gain circuit;The output end of first analog-digital conversion circuit and second analog-digital conversion circuit is connected with digital signal processing circuit.The utility model can make signal pass through different gain amplifier, double ADC sampling, make one way channel satisfy small particle measurement, another way satisfies large particle measurement, and the electrical signal of larger particle and smaller particle can be considered.

Provided are feedforward amplifier circuit, audio amplifier and audio playing device, including: a main amplifier circuit, an adder circuit, a sub-amplifier circuit and a subtractor circuit, wherein the main amplifier circuit adds distortion to a first input signal to output a distorted signal, and inputs the distorted signal to the adder circuit and the subtractor circuit for performing feedforward correction; the sub-amplifier circuit amplifies a second input signal and serves as a positive input of the subtractor, so that a signal gain output by the subtractor is equal to a signal gain of the main amplifier; the subtractor circuit, with the distorted signal as a negative input, reversely amplifies the distorted signal and afterwards performs feedforward; and the adder circuit superimposes the distorted signal output by the main amplifier circuit and the reversely amplified distorted signal output by the subtractor, so as to output a distortion-free signal.

The invention relates to the technical field of antenna devices and electromagnetic functional materials, and particularly discloses a high-temperature-resistant navigation antenna based on a high-temperature anti-oxidation conductor coating, which comprises an antenna pattern layer, a dielectric substrate and an outer edge shielding layer, and is characterized in that the antenna pattern layer is arranged on the upper surface of the dielectric substrate; the high-temperature anti-oxidation conductor coating is a double-fed circularly polarized microstrip navigation antenna pattern; the dielectric substrate is an oxide ceramic material dielectric substrate; and the outer edge shielding layer is a high-temperature anti-oxidation metal conductor coating and is coated on the outer side surface of the dielectric substrate. The high-temperature-resistant navigation antenna disclosed by the invention has the characteristics of high-temperature-resistant use environment, high-temperature oxidation resistance, 1.27 + / -0.01 GHz frequency band high signal gain and stable standing wave, and solves the problems that a metal antenna pattern is oxidized at high temperature and a dielectric medium organic material system is ablated and damaged at high temperature in a traditional metal antenna pattern / organic dielectric medium navigation antenna material system scheme; and the antenna has good high-temperature navigation antenna engineering application value.

The embodiment of the application provides an audio low-frequency signal gain control circuit and a related device, which comprise an input processing sub-circuit, a non-dynamic low-frequency signal processing sub-circuit, a dynamic low-frequency signal processing sub-circuit, a signal synthesis sub-circuit, an adaptive gain control sub-circuit and a bass speaker. The input processing sub-circuit is used for pre-processing an input stereo audio signal to obtain a first audio low-frequency signal; the non-dynamic low-frequency signal processing sub-circuit is used for processing the first audio low-frequency signal to obtain a non-dynamic audio low-frequency signal; the dynamic low-frequency signal processing sub-circuit is used for separating a dynamic audio low-frequency signal; the signal synthesis sub-circuit is used for merging the non-dynamic audio low-frequency signal and the dynamic audio low-frequency signal to obtain an audio low-frequency signal; the adaptive gain control sub-circuit is used for gain control on the audio low-frequency signal; and the bass speaker is used for outputting the audio low-frequency signal. In this way, the adaptive gain on the audio low-frequency signal is realized through an analog circuit.

The invention provides an electronic device and a pickup method, and belongs to the technical field of terminals.The electronic device comprises a directional microphone array, and the directional microphone array at least comprises a first directional microphone and a second directional microphone. The pickup enhancement direction of the first directional microphone is perpendicular to the pickup enhancement direction of the second directional microphone. The direction with the maximum sound signal gain of the directional microphone array is a target direction, and the target direction is jointly determined by the first directional microphone and the second directional microphone. According to the scheme provided by the invention, the array structure of the first directional microphone and the second directional microphone is combined with the back-end algorithm, so that pickup enhancement in a specific direction can be realized.

The application relates to a method for quickly obtaining the gain of an incident signal based on an antenna directional diagram. The method comprises the following steps: setting an antenna pointing angle; constructing an antenna horizontal plane axial vector and an antenna vertical plane axial vector according to the antenna pointing angle; constructing a signal transmitting vector or a signal receiving vector according to a signal transmitting angle or a signal receiving angle; calculating the included angle between the signal transmitting or receiving angle and the antenna vertical plane axial vector to obtain the zenith angle of the signal transmission or reception; calculating the elevation angle of the signal transmission or reception relative to the original antenna directional diagram according to the zenith angle; calculating the included angle between the signal transmitting or receiving angle and the antenna horizontal plane axial vector to obtain the azimuth angle of the signal transmission or reception; and searching for the corresponding gain value in a pre-constructed antenna directional diagram two-dimensional data model according to the elevation angle of the signal transmission or reception relative to the original antenna directional diagram and the azimuth angle of the signal transmission or reception. The method can solve the problem of quickly obtaining the antenna gain in simulation.

This invention discloses a vector modulation active phase shifter, comprising a coupling network (100) for generating quadrature signals, a first active amplitude control module (200) and a second active amplitude control module (300) composed of a common-source cascode transistor array for adjusting the gain of in-phase and quadrature signals, and a power combining and output matching network (400). The vector modulation active phase shifter includes a phase compensation network (500) located between the coupling network for generating quadrature signals and the active amplitude control module, used to optimize the phase bandwidth of the quadrature signals and improve phase shift accuracy. This invention realizes a wideband, high-precision, directly digitally controlled vector combining active phase shifter with a 360° phase shift range.

A method of processing audio, the method comprising: receiving audio data for playback on a playback device, the audio data comprising a target audio component; receiving masked audio data; obtaining hearing loss data associated with a listener; obtaining back discharge level data; calculating a target excitation pattern based on the target audio component and the return discharge level data; calculating a masked excitation pattern based on the masked audio data; calculating a signal gain based on the target excitation pattern, the masked excitation pattern, and the hearing loss data; and applying the signal gain to the target audio component to produce a compensated target audio component.

An electronic device, which aims to address the problem of relatively low circularly polarized signal gain of antennas. In the electronic device, a first antenna is disposed on a third frame, the first antenna comprising: a first branch, a second branch, a grounding structure, and a matching circuit, the first branch being closer to a first frame than the second branch; the first branch is provided with a feed point, the matching circuit being coupled to the feed point, the matching circuit being configured for enabling the first branch to generate a first resonance, and the matching circuit being further configured for enabling the second branch to generate a second resonance; a second antenna is disposed on the first frame and / or a second frame, and the first antenna is configured for coupling a signal to the second antenna, so that the second antenna generates a first parasitic resonance, wherein both the first parasitic resonance and the first resonance are circularly polarized signals, and a polarization direction of the first parasitic resonance is the same as a polarization direction of the first resonance, thereby increasing circularly polarized signal gain (circular polarization gain) and improving communication performance in electronic devices.

This utility model relates to a six-dimensional torque sensor system. Through integrated circuit design and packaging within the six-dimensional torque sensor, high-precision and highly sensitive deformation sensing and electrical signal conversion output are achieved via strain gauges on the elastic beams of the main frame structure. After specific measurement using a half-bridge differential Wheatstone bridge, the measured signal is amplified, filtered, and converted from digital to analog data by an ADC chip before being sent to a lower-level computer. The lower-level computer then reads the acquired sensor measurement signal, forming a high-precision circuit design specifically matched to the six-dimensional torque sensor. The coordinated installation of the strain gauges, half-bridge differential Wheatstone bridge, and ADC chip makes it less susceptible to environmental factors and effectively suppresses noise interference while achieving high signal gain, effectively realizing the measurement output function of the six-dimensional torque sensor.

An equalizer includes a graphic equalizer circuit, a first multiplication circuit, a second multiplication circuit, a summing circuit, and a gain control circuit. The graphic equalizer circuit processes a first input signal and outputs a first output signal and a second output signal. The first multiplication circuit multiplies the first output signal by one of an adjustable gain value and a fixed gain value to produce a first adjusted output signal. The second multiplication circuit multiplies the second output signal by the other of the adjustable gain value and the fixed gain value to produce a second adjusted output signal. The summing circuit combines the first adjusted output signal and the second adjusted output signal to produce an equalizer output signal. The gain control circuit dynamically adjusts the adjustable gain value based on the equalizer output signal.

A Doherty amplification device includes a distributor to distribute, into first and second signals, an input signal after distortion-compensation, first and second amplifiers, a combiner to combine the amplified first and second signals, and an adjuster between the distributor and the first or second amplifiers and to include a first calculation circuit to obtain a first-characteristic indicating a relationship of a gain of an output signal with respect to reference-power of the input signal, based on the output signal and the input signal, a classification circuit to classify the first-characteristic into regions according to the reference-power, a second calculation circuit to obtain a statistical-value of the gain for each regions, and a determination circuit to set, in the adjuster, a phase-delay at which distortion to be generated in the output signal is minimized, based on the statistical-value, wherein the adjuster adjusts the phase-delay of the first or second signals.

The application discloses a parallel optical fiber amplifier channel equalization system based on signal power adaptive grading, and is characterized in that: the system further comprises a power detection and grading module arranged in front of the parallel amplifier and used for detecting the input optical signal in real time and dividing the optical signal into several power grades based on a preset or adaptive threshold, and a signal distribution and merging module used for guiding the optical signals of different power grades divided to corresponding parallel amplifier paths and merging the optical signals output by each path after the parallel amplifier completes amplification processing to realize channel power equalization; through power grading and differential amplification, the application reduces the difference value of the output power of each channel, realizes intelligent equalization of multi-channel optical signals, improves system gain flatness, effectively reduces the bit error rate caused by power imbalance, avoids the problems of gain saturation of high-power signals and insufficient gain of low-power signals, and improves channel capacity.

The invention discloses an electromagnetic ultrasonic method, device and system for realizing regional C-type scanning thickness measurement, and relates to the technical field of industrial detection, and the method comprises the steps: obtaining the surface curvature information of a to-be-measured object; dynamically adjusting the incident angle and the signal gain of the ultrasonic beam based on the corresponding surface curvature information, and setting the thickness corrosion value and the thickness reference value of the to-be-measured object; based on the incident angle and the signal gain of the ultrasonic beam, acquiring an echo signal of each cell in a grid sticker in a detection area of the object to be detected; the grid paster is pasted on the surface of an object to be detected; the grid stickers correspond to a plurality of cells; generating a plurality of pieces of thickness data based on the echo signal of each cell; and mapping the plurality of thickness data into a pixel value image, and carrying out thermodynamic diagram fusion projection to obtain a thickness thermodynamic distribution diagram of the detection area of the to-be-detected object. According to the invention, thickness scanning and visual display of the detection area can be realized.

The invention discloses a multi-band adjustable equipment antenna device, and relates to the technical field of antennas, and the device comprises an antenna column which is provided with a plurality of accommodation grooves along a circumferential array; the supporting rods are rotationally connected into the corresponding containing grooves respectively, and each supporting rod is provided with a containing groove; a plurality of antenna groups, each of which comprises a pair of antenna rods, and the antenna rods are rotatably connected in the corresponding storage grooves; and the unfolding assembly is arranged in the antenna pole and is used for driving the supporting rod and the antenna pole to be switched between a storage state and an unfolding state. By providing a built-in signal enhancement mode and an external signal enhancement mode which can be switched, the device can adapt to different use scenes, moderate signal gains are provided with the advantage of portability in a storage state, and communication requirements in a long-distance or weak-signal environment are met with strong directivity and high gains in an unfolding state; and portability and high performance are realized.