2803 results about "Signal processing circuits" patented technology

The disclosure generally relates to a method, system and apparatus to improve a user's understanding of speech in real-time conversations by processing the audio through a neural network contained in a hearing device. The hearing device may be a headphone or hearing aid. In one embodiment, the disclosure relates to an apparatus to enhance incoming audio signal. The apparatus includes a controller to receive an incoming signal and provide a controller output signal; a neural network engine (NNE) circuitry in communication with the controller, the NNE circuitry activatable by the controller, the NNE circuitry configured to generate an NNE output signal from the controller output signal; and a digital signal processing (DSP) circuitry to receive one or more of controller output signal or the NNE circuitry output signal to thereby generate a processed signal; wherein the controller determines a processing path of the controller output signal through one of the DSP or the NNE circuitries as a function of one or more of predefined parameters, incoming signal characteristics and NNE circuitry feedback.

The invention provides a flexible photoelectric multi-mode sensing device and a measuring method, the device is provided with an array flexible optical structure, comprises a flexible proximity-temperature-touch multi-mode sensor, a signal processing circuit and a precise grabbing embedded control system, and can be used for realizing automatic precise grabbing control. According to the measurement method, precise grabbing is completed based on the flexible proximity-temperature-touch multi-mode sensor, three work tasks of proximity and touch normal force measurement and sliding measurement are automatically distinguished through time sequence voltage information, and technical support is provided for achieving an automatic, high-precision and high-expandability precise grabbing control system.

The invention discloses a high-speed multi-photon detection system and method. The system comprises a detector and a signal processing circuit, wherein the detector is composed of a window plated with a photoelectric cathode, a micro-channel plate stack and an anode; a plurality of incident photons are converted into a plurality of photoelectrons by the photoelectric cathode, and the photoelectrons are converted into electron cloud by the micro-channel plate stack; the incident electron cloud is divided into multiple paths by three layers of staggered metal strip electrodes of the anode, and charge collection is carried out to obtain charge short pulses of each layer of electrode; the signal processing circuit converts the charge short pulses transmitted by the three layers of electrodes into digital pulse signals, obtains the centroid coordinates of the electron cloud from the digital pulse signals as the abscissa value, the ordinate value and the verification value of the incident photon position, combines the abscissa value, the ordinate value and the verification value based on the screening condition to obtain the target two-dimensional coordinates, and finally obtains the target two-dimensional coordinates. And transmitting to a terminal for imaging display. According to the invention, a plurality of synchronous photons can be detected, the overall counting rate of the detector is greatly improved, and the detection efficiency is improved.

The embodiment of the invention provides a signal processing circuit, a chip and electronic equipment. The signal processing circuit comprises an analog-to-digital conversion module and a signal amplification module, the first chopping switch module is used for modulating the differential input signal to high frequency under the control of a preset clock signal and inputting the signal to the signal amplification module; the second chopping switch module is used for modulating the differential output signal output by the signal amplification module to a low frequency under the control of a preset control signal and inputting the low frequency to the analog-to-digital conversion module; and the second chopping switch module also enables the analog-to-digital conversion module to establish sampling under the control of a preset control signal. According to the application, the second chopping switch module is multiplexed as a sampling switch of the analog-to-digital conversion module, so that the problem that on-resistance is increased due to the fact that a chopping demodulation switch and the sampling switch are arranged at the same time can be avoided.

A fastener and a system, apparatus, and method for monitoring a fastener are described. The fastener includes a head portion, a shank portion, a transponder, and a compression spring, wherein the head portion includes a mounting portion, and wherein the transponder is disposed in the mounting portion of the head portion. The transponder is arranged to monitor the shank portion, and includes an ultrasonic sensor and a signal processing circuit. The ultrasonic sensor is affixed to a transducer hosting surface, and is urged against the transducer hosting surface by placement of the printed circuit board in the head portion with the compression spring intervening therebetween. The ultrasonic sensor communicates with the signal processing circuit via the compression spring. The signal processing circuit captures a signal from the ultrasonic sensor and transforms the signal into a parameter corresponding to a tensile force being exerted by the fastener.

A system and method for detecting anomalies in encrypted network traffic without decrypting encrypted payloads is disclosed. The invention comprises a hardware-accelerated pipeline including a packet acquisition unit configured to extract observable header attributes and timestamp values, a signal analysis unit implemented using digital signal processing circuitry to generate temporal and spectral characteristics of encrypted packet flows, and a morphometric extraction unit that produces encrypted-flow descriptors based on statistical dispersion, burst patterns, and ciphertext variability. A behavioral graph construction unit generates graph-structured representations of encrypted flows using incremental state-transition encoding. An artificial-intelligence inference unit employing a tensor-processing processor performs multi-stage anomaly analysis through temporal reconstruction, attention-based weighting of descriptors, and graph-structural deviation assessment to compute anomaly scores without decrypting any payload. A secure response control unit evaluates the scores against policy thresholds and performs mitigation actions while preserving confidentiality.

The invention discloses a protection circuit, a protection control method of an electric drive system, the electric drive system and a vehicle. The protection circuit comprises a sampling module and a control module. The sampling module is used for obtaining multiple sampling signals of the electric drive system, and the control module is connected with the sampling module and used for executing protection measures on the electric drive system when at least two sampling signals in the multiple sampling signals of the electric drive system are abnormal. The protection circuit can collect various signals for comprehensive processing, all signal processing is carried out in the control module, an external signal processing circuit does not need to be added, the overall structure does not need to be optimized, whether the electric drive system is protected or not is comprehensively decided by considering various different types of sampling signals, the safety and reliability are improved, and the cost is reduced. And misjudgment caused by abnormal sampling or damage of the sampling module is avoided.

A signal processing circuit for a measurement instrument is described. The signal processing circuit comprises a measurement input, a first measurement channel, a second measurement channel, and a noise canceling circuit. The first measurement channel comprises a first wideband analog-to-digital converter (ADC) and a first transformation circuit. An output signal of the first measurement channel is a first frequency domain signal. An output signal of the second measurement channel is a second frequency domain signal. The first frequency domain signal and the second frequency domain signal are a complex-valued signal, respectively. The noise canceling circuit is configured to receive the first frequency domain signal and the second frequency domain signal and to determine a combined average of the first frequency domain signal and of the second frequency domain signal over a predetermined number of frequency bins, thereby obtaining a complex-valued average signal. Further, a measurement system is described.

The invention discloses an electricity testing measuring device for power equipment. The invention relates to the field of space electric field measurement, and solves the problems of unsafety and low anti-interference capability of an existing electricity testing scheme. The electric field sensor collects the electric field intensity in a non-contact manner, and the distance sensor synchronously collects the detection distance, so that a conventional contact type electroscope does not need to contact equipment through a telescopic insulating rod. The signal processing circuit preprocesses electric field intensity information and distance information respectively to obtain effective analog signals representing the electric field to be measured, and the defect that a traditional non-contact plate electrode sensor induces stray electric fields indifferentially is overcome. Besides, the judgment control circuit judges the electrification state according to the preset electric field threshold value corresponding to the current distance analog signal instead of a single fixed threshold value of a traditional device instead of adopting a fixed threshold value, the electric field distribution characteristics of equipment with different voltage grades are adapted, manual intervention is not needed, and personal safety is guaranteed. And the occurrence rate of production accidents caused by abnormal electrification of equipment is reduced.

A signal processing circuit has a first signal loop with a first signal processing block and a first feedback path that extends around the first signal processing block, the first signal processing block having a frequency dependence that causes the first signal loop to generate a passband. A second signal processing block is downstream of the first signal loop. A second feedback path extends from downstream of the second signal processing block to upstream of the first signal processing block. In operation, the first feedback path reinforces a signal in the passband and the second feedback path conditions the signal at an output downstream of the first signal processing block.

The invention relates to the technical field of power distribution automation auxiliary power supply control, and discloses an intelligent power distribution circuit system for a digital ring main unit, which comprises a transient voltage gradient induction bridge circuit, a hardware signal processing circuit, a power switch unit and a controlled energy release unit, according to the system, a transient voltage gradient induction bridge circuit is used for collecting a primary side bus voltage change rate signal, a hardware signal processing circuit carries out derivation operation on an induction signal and compares the induction signal with a voltage gradient threshold value, and a power switch unit is blocked at the moment that the voltage abnormally drops so as to cut off a load current path. According to the invention, a hardware parameter direct mapping mechanism is utilized to realize microsecond transient protection response, and the physical decoupling of protection logic and digital software is realized by balancing bus potential pulse caused by sudden unloading of a load through the inherent dehumidification resistor in the multiplexing cabinet.

The invention discloses a radio frequency voltage sensor and a plasma source system. The radio frequency voltage sensor comprises a signal acquisition module and a signal processing circuit. The signal processing circuit comprises a rectangular wave pulse detection module, a signal conversion module, a peak holding module and an operation output module; the input end of the rectangular wave pulse detection module receives a pulse synchronization signal; the signal conversion module is connected with the output end of the signal acquisition module; the first input end of the peak holding module is connected with the output end of the signal conversion module, and the second input end of the peak holding module is connected with the output end of the rectangular wave pulse detection module; and the operation output module is connected with the output end of the peak holding module. According to the radio frequency voltage sensor and the plasma source system provided by the invention, the peak voltage corresponding to the single-stage pulse can be accurately detected, the peak voltage corresponding to the multi-stage pulse can also be stably detected, the output is prevented from jumping to zero during the pulse closing period, and the stability and practicability of measurement are improved.

The invention discloses an IGBT junction temperature on-line monitoring circuit system based on grid peak current, and the system comprises an IGBT grid driver which is used for controlling a to-be-detected IGBT to charge and discharge; the grid signal processing circuit is used for converting the grid peak current of the IGBT to be detected into a narrow pulse voltage signal, performing amplitude processing on the narrow pulse voltage signal, and outputting the narrow pulse voltage signal after the amplitude processing; the two-stage narrow pulse peak holding circuit is used for holding the narrow pulse voltage signal after amplitude processing; and the acquisition and processing circuit is used for acquiring the signal output by the two-stage narrow pulse peak holding circuit to obtain an acquisition voltage, acquiring the frequency of the driving input signal, selecting a junction temperature calibration formula according to the acquired frequency, and calculating the junction temperature of the IGBT to be measured according to the acquisition voltage and the selected junction temperature calibration formula. The junction temperature monitoring circuit is high in monitoring precision, simple in circuit structure and few in influence factors during junction temperature monitoring.

An apparatus includes signal processing circuitry configured to generate processed data signals in response at least in part to transducer signals from at least one acoustic transducer and filtering signals, and to transmit the processed data signals via at least one communication channel to an actuating assembly of an auditory prosthesis. The apparatus further includes circuitry configured to monitor one or more of the signal processing circuitry, the processed data signals, and the at least one communication channel, and to generate filtering control signals in response at least in part thereto. The apparatus further includes filtering circuitry configured to generate the filtering signals in response at least in part to the processed data signals and the filtering control signals.

A driving assembly management system, a fault detection method, and an electric power-assisted bicycle. The driving assembly management system comprises: an Internet-of-things device, multiple digital assemblies, and a bus; each digital assembly comprises: a driving assembly and a digital circuit connected to the driving assembly; the digital circuit comprises: an assembly signal processing circuit, a first processor, and a first memory; an input end of the assembly signal processing circuit is connected to a signal acquisition end of the driving assembly; the first processor is further connected to the assembly signal processing circuit; the first memory is connected to the first processor; and the Internet-of-things device is communicatively connected to the first processor in the multiple digital assemblies, so as to perform fault detection according to working state data and identification information of the multiple digital assemblies.

The embodiment of the invention provides a novel integrated charge pump driving circuit and a power integrated circuit, and relates to the technical field of driving circuits, the circuit comprises a front signal processing circuit and a main charge pump and driving circuit; the front signal processing circuit receives a driving logic signal input by the system, preprocesses the driving logic signal and outputs a low-voltage control signal, a first high-voltage control signal and a second high-voltage control signal; and the main charge pump and drive circuit is connected with the output end of the front signal processing circuit, receives the low-voltage control signal, the first high-voltage control signal and the second high-voltage control signal, and processes and outputs a gate drive signal. The circuit provided by the invention can continuously output high-quality gate driving signals, hundred percent duty ratio driving is realized, only dynamic power consumption of the charge pump exists in the whole driving scheme, and the efficiency is higher.

The invention provides a current monitoring circuit, a chip and electronic equipment, and relates to the technical field of electronic circuits, and the circuit comprises a sampling circuit, an operational amplifier circuit and a signal processing circuit; the sampling circuit is connected with a sampling resistor of a monitoring target and outputs sampling voltage to the operational amplifier circuit; the operational amplification circuit outputs the sampling voltage difference after operational amplification to the signal processing circuit; the signal processing circuit comprises a multi-gear voltage generation module and a comparator, and the output end of the multi-gear voltage generation module is connected with the positive input end of the comparator so as to output target reference voltage to the comparator; the output end of the operational amplifier is connected with the negative input end of the comparator, the comparator outputs a feedback signal according to the target reference voltage and the sampling voltage difference, and the feedback signal is used for controlling the working state of a connecting chip; the multi-gear voltage generation module is used for generating reference voltages corresponding to different target currents. The method can adapt to multiple scenes with different current requirements.

The invention discloses a dual-channel millimeter wave transmitter, a receiver and a transceiver system. The transmitter comprises a baseband signal processing circuit, a local oscillator signal processing circuit and a radio frequency front-end circuit comprising a high-frequency channel power amplifier, a low-frequency channel power amplifier and a signal synthesis switching circuit. The radio frequency front-end circuit selectively outputs signals of a high-frequency channel or a low-frequency channel through the signal synthesis switching circuit, and a current adjusting circuit is arranged in the baseband signal processing circuit and used for adjusting mismatch of a switching tube in the mixer. The disclosure also provides a dual-channel millimeter wave receiver and transceiver system based on the same concept. According to the invention, the problem of performance bottleneck of a single-channel transceiver in broadband application is solved, the system linearity is improved, the processing capability of high-order modulation signals is improved, and high power efficiency and high integration level are maintained through optimized circuit design.

The invention discloses a Rogowski coil current transformer and a current measurement system, and relates to the technical field of current measurement. The Rogowski coil current transformer comprises a Rogowski coil and a signal processing circuit; the differential signal is converted into a differential constant-current signal to be output based on a signal processing circuit; the signal processing circuit comprises an integral amplification module for performing integral amplification on the differential signal based on the integral amplification module; the first direct current component removing module is used for removing a direct current component in the voltage signal after integral amplification based on the first direct current component removing module; the signal adjusting module is used for realizing amplitude in-phase amplification and phase compensation; the single-ended to differential output module is used for generating symmetrical differential voltage signals based on the single-ended to differential output module; and the conversion module is used for converting the symmetrical differential voltage signal into a differential constant current signal and outputting the differential constant current signal based on the conversion module. And through the integral amplification module and the phase compensation module, the differential signal is accurately converted into the current signal, so that the current measurement result is more accurate.

The embodiment of the invention provides a signal processing circuit, a signal processing system and a mobile carrier, which can be particularly used for processing signals of a wheel speed sensor. The signal processing circuit comprises a signal screening circuit, and the signal screening circuit comprises a first comparison element, a second comparison element and a first switch assembly. The first comparison element is used for outputting a first signal larger than a first threshold value, the second comparison element is used for outputting a second signal larger than a second threshold value, and the first signal and the second signal are effective signals of the WSS. When the first signal and the second signal are both output, the first switch assembly is used for outputting effective signals corresponding to two current values in the first signal and the second signal from the first output end and the second output end of the signal screening circuit respectively. Therefore, the circuit is simple, the cost is low, and effective signals with different current values can be screened and output according to wheel speed signals under different protocols.

The embodiment of the invention provides an acoustic device and a signal processing method, a bone conduction sounding assembly of the acoustic device generates a first time delay when converting a first driving signal into a bone conduction sound wave, and an air conduction sounding assembly generates a second time delay when converting a second driving signal into an air conduction sound wave. The absolute value of the difference between the second time delay and the first time delay is larger than 100 microseconds, the signal processing circuit obtains an audio signal during operation, generates a first driving signal based on a first component of the audio signal and sends the first driving signal to the bone conduction sounding assembly, and generates a second driving signal based on a second component of the audio signal and sends the second driving signal to the air conduction sounding assembly, one of the first driving signal and the second driving signal is transmitted in a delayed manner relative to the other, so that the time difference between the generation time of the bone-guided sound wave and the generation time of the air-guided sound wave at at least partial frequency is less than or equal to 100 microseconds. According to the scheme, the problem of partial sound can be avoided.

The invention relates to a class-C voltage-controlled oscillator with negative-pressure substrate bias and a use method thereof. Aiming at the problem that a traditional C-type voltage-controlled oscillator is difficult to start, the C-type voltage-controlled oscillator provided by the scheme adopts different circuits to simultaneously control the grid voltage and the substrate voltage of the cross-coupled pair transistors, so that the transistors are effectively prevented from entering a linear region, and the C-type voltage-controlled oscillator is quickly started and stably works in a C-type oscillation mode. The circuit structure of the scheme comprises an NMOS (N-channel Metal Oxide Semiconductor) cross coupling circuit, a PMOS (P-channel Metal Oxide Semiconductor) cross coupling circuit, an LC resonant cavity circuit, an amplitude detection circuit, a Schmidt signal processing circuit and a negative voltage charge pump circuit. Wherein the Schmidt signal processing circuit and the negative voltage charge pump circuit rapidly process an initial oscillation signal and provide negative voltage required by the system, and a substrate of the NMOS cross coupling tube is biased. According to the scheme, the design structure is simple, the tuning range is wide, and a new thought is provided for research and design of quick start of the C-type voltage-controlled oscillator.

The utility model provides a multichannel staggered sampling SPAD module which is arranged in a laser radar and serves as a receiving module of a machine radar, an MCU is arranged in a laser tool, the MCU is provided with an MCU interface, and the multichannel staggered sampling SPAD module comprises an SPAD unit, a TDC circuit array, a signal processing circuit and a coding circuit; wherein the work cycles of the TDC circuits in the TDC circuit array are sequentially arranged in a staggered manner, so that time of the SPAD units is sampled in a staggered manner, a delay chain is formed, the TDC circuit array can output a second value once every a fixed time length, and the fixed time length is smaller than the work cycle of one TDC circuit. After the technical scheme is adopted, the upper limit of the signal transmission rate can be greatly improved, so that the sampling efficiency is improved, and stronger scanning performance is realized.

The invention relates to the technical field of photoelectricity, and discloses a laser radar chip, a laser radar and a data processing method of the laser radar chip. The laser radar chip comprises an analog-to-digital converter, a memory, a first detection module and a second detection module. The first detection module is used for detecting the sampling signal generated by the analog-to-digital converter when the signal acquired by the analog-to-digital converter is a beat frequency signal, and the second detection module is used for detecting the sampling signal generated by the analog-to-digital converter when the signal acquired by the analog-to-digital converter is an echo signal. The laser radar chip not only can be applied to a receiving end signal processing circuit of an FMCW laser radar, but also can be applied to a receiving end signal processing circuit of a ToF laser radar, and also can be applied to a receiving end signal processing circuit of an FMCW and ToF combined laser radar, and the compatibility is stronger.

An inertial measurement device includes: an inertial sensor; a first signal processing circuit; a second signal processing circuit; a first communication unit and a second communication unit configured to communicate with an external device; and a mode selection unit configured to select a processing mode from a plurality of modes including a first processing mode and a second processing mode. The first processing mode is a mode in which the inertial measurement device is used alone and outputs a signal processed by the first signal processing circuit from the first communication unit, and the second processing mode is a mode in which the inertial measurement device is used in a state of being coupled to another inertial measurement device, a first signal processed by the first signal processing circuit and a second signal from another inertial measurement device received from the second communication unit are subjected to a calculation process by the second signal processing circuit, and a signal subjected to the calculation process is output from the first communication unit.

The invention relates to a preparation method of a surface acoustic wave filter integrated with a CMOS (Complementary Metal Oxide Semiconductor) process, which comprises the following steps of: preparing a CMOS radio-frequency signal processing circuit by using a silicon or silicon carbide substrate, combining a dielectric buffer layer with a piezoelectric material, and then depositing a metal interdigital structure on the surface of the piezoelectric material to prepare the surface acoustic wave filter. A passivation layer is deposited on the surface of the filter to protect the filter structure, finally a metal interconnection line and the passivation layer are prepared above the filter, and in order to not affect the performance of the filter, an air cavity is prepared between the passivation layer and the metal interconnection layer of the filter, so that the passivation layer and the metal interconnection layer are effectively isolated. According to the preparation method, the surface acoustic wave filter and the CMOS radio frequency circuit can be integrated, the problem that radio frequency front-end and rear-end signal processing cannot be integrated at the same time at present is solved, and the preparation method plays an important role in promoting development of a radio frequency chip in the directions of high integration, low cost, miniaturization and the like; and the radio frequency chip has wide practical value and economic value in the radio frequency chip application field.

The invention discloses a peak code modulation circuit based on a dynamic memristor, which comprises the dynamic memristor and a signal conversion module, and is characterized in that the signal conversion module comprises a signal isolation module, a feature extraction module and a pulse conversion module which are connected in sequence. The dynamic memristor generates a voltage signal with a slow-rising and steep-falling characteristic under constant current input. The signal isolation module comprises a high-impedance input buffer circuit; the feature extraction module comprises an asymmetric time constant signal processing circuit used for performing enhanced extraction on the steep drop feature of the memristor output signal; and the pulse conversion module comprises a dual-threshold positive feedback hysteresis comparison circuit and is used for converting the output signal of the feature extraction module into a rectangular digital pulse. The circuit is specially designed according to the characteristics of the memristor, is simple in structure, is easy to integrate, can achieve the efficient conversion from an analog signal to a standard digital pulse, and is suitable for the fields of neuromorphic calculation and low-power-consumption signal processing.

The invention relates to the technical field of automatic welding, and discloses a micro welding seam tracking method and system based on electromagnetic induction. According to the method, a high-frequency alternating magnetic field is applied to a welding seam area through an exciting coil in the micro electromagnetic sensing core; an induction coil in the electromagnetic sensing core is used for detecting magnetic field disturbance caused by geometric shape changes of the weld groove, and induction signals are obtained; processing the induction signal through a signal processing circuit integrated in the probe, namely converting the impedance change of the coil into a voltage signal, demodulating and filtering the voltage signal, and extracting a direct-current voltage signal corresponding to the deviation of the probe relative to the central position of the welding seam; the direct-current voltage signals serve as position feedback information to be output to a welding robot control system; and the movement track of the welding robot is adjusted in real time according to the position feedback information, and welding seam tracking and path deviation correction are achieved.

The invention provides a constant-power load analog circuit, a constant-power adjusting method and a rack-mounted load box, and belongs to the field of rack-mounted load boxs.The analog circuit comprises a rectifying circuit, a diverter, a power module, a fan module and a control and drive circuit, and the power module comprises at least one heating tube and at least one transistor. The control and drive circuit comprises a main control circuit, a voltage signal processing circuit, a current signal processing circuit, a power setting and display module and at least one IGBT drive circuit, the base electrode of the transistor is connected to the main control circuit through the IGBT drive circuit, and the power setting and display module is connected to the main control circuit and used for inputting a set power value. The main control circuit collects voltage and current of an external power supply, calculates a rated power value, calculates a signal duty ratio according to a set power value and the rated power value, outputs a PWM wave, controls on or off of a transistor through the IGBT driving circuit, dynamically adjusts actual output power of the load simulation circuit to be consistent with the set power value, and controls the load simulation circuit to work. And the power regulation precision of the load box is improved.

The invention relates to a level control circuit and electric equipment. The level control circuit comprises a level shift circuit, an enable signal processing circuit and a level determination circuit. The level shift circuit is used for receiving a first control signal corresponding to the first voltage domain, converting the first control signal into a second control signal corresponding to the second voltage domain, and outputting the second control signal. The enable signal processing circuit is connected with a first positive power supply end of the first voltage domain and a second positive power supply end of the second voltage domain, and outputs an enable signal on the basis of a second power supply voltage provided by the second positive power supply end under the condition that the first power supply voltage is not connected to the first positive power supply end. And the level determining circuit is connected with the enable signal processing circuit and the output end of the level shifting circuit, and is used for controlling the level of the output end of the level shifting circuit to be in a preset state according to the received enable signal. The level shift circuit is clear in output state and high in output reliability under the condition that the second positive power supply end provides the second power supply voltage.