400 results about "Signal cell" patented technology

The present disclosure provides an active compensation device for actively compensating for noise generated in a common mode in each of at least two high-current paths. The active compensation device includes: a sensing unit configured to generate an output signal corresponding to a common-mode noise signal on the high-current path, an IC unit that receives the output signal and converts the same into a digital signal, generates noise data and an amplified signal at least based on the digital signal, and outputs the noise data and the amplified signal, and a compensation unit that draws a compensation current from the high current path or generates a compensation voltage on the high current path, based on the amplified signal. The noise data is provided to an external device.

The invention provides a corrosion-resistant composite cable and a preparation method thereof, the corrosion-resistant composite cable comprises a signal unit, an optical cable unit and a protection unit, the signal unit and the optical cable unit are coated with the protection unit, the signal unit comprises a silver-plated copper conductor, an insulating layer, a shielding layer and a sheath layer, and the silver-plated copper conductor is coated with the insulating layer. The optical cable unit comprises an optical fiber, a buffer tube and a filler; the protection unit comprises an inner sheath, a tensile layer, an anti-corrosion layer and an outer sheath. The corrosion-resistant composite cable has good corrosion resistance, can effectively resist corrosion of various chemical substances, prolongs the service life of the cable, reduces the fault risk caused by corrosion, and improves the stability and reliability of power transmission or signal transmission; under severe environment conditions, such as high humidity, high salinity and high alkalinity, a normal working state can still be kept, continuous and stable support is provided for related equipment or systems, and normal operation of the equipment or systems is guaranteed.

The invention provides a personnel detection method and system applied to a fire scene, and the method comprises the steps: firstly obtaining a multi-source signal data set of the fire scene, enabling the multi-source signal data set to comprise communication signal units which are collected at different positions and are provided with time stamps, carrying out the signal feature extraction processing of the multi-source signal data set, and carrying out the detection of the multi-source signal data set; the method comprises the following steps: obtaining spatial distribution characteristics and time sequence change characteristics of a communication signal unit, then calling a pre-trained personnel positioning model to carry out joint positioning analysis on the spatial distribution characteristics and the time sequence change characteristics, and generating a potential personnel position candidate set corresponding to the communication signal unit; target position information of to-be-rescued personnel in the fire scene is determined according to the potential personnel position candidate set, finally, a rescue guide instruction containing position coordinates is generated based on the target position information, the rescue guide instruction is sent to a rescue terminal to trigger personnel search and rescue operation, and therefore indirect positioning is achieved through communication signals, and rescue efficiency is improved. Limitations of a traditional method are overcome, and rescue efficiency is improved.

The utility model discloses a control circuit, a battery management system, a distribution box, a battery pack and electric energy equipment. The control circuit comprises a latch circuit, a first signal unit, a delay circuit and a second signal unit. The first signal unit is electrically connected with the latch circuit and is used for determining a working signal and a reset signal; the time delay circuit is electrically connected with the latch circuit; the second signal unit is electrically connected with the time delay circuit and is used for outputting a first enable signal for switching on the control switch and a second enable signal for switching off the control switch; when the first signal unit determines the working signal, the latch circuit inputs a first preset signal to the time delay circuit, so that the time delay circuit controls the second signal unit to output a first enable signal; and when the first signal unit determines the reset signal, the latch circuit inputs a second preset signal to the time delay circuit, so that the time delay circuit controls the second signal unit to output a second enable signal after a preset duration.

The invention provides a multi-algorithm cooperative positioning method for a Beidou single-mode terminal of a railway locomotive, which belongs to the technical field of railway communication and positioning, and comprises the following steps: firstly, receiving a positioning signal flow which is sent by a Beidou satellite and contains a propagation path identifier, and carrying out shunt processing on a satellite signal unit; a direct signal is imported into a basic positioning algorithm module, a reflected signal is imported into an auxiliary positioning algorithm module, an initial positioning result and path correction information are obtained, then the initial positioning result and the path correction information are subjected to correlation verification, intermediate positioning data are generated, the intermediate positioning data are subjected to constraint adaptation based on railway line track feature information, and a constraint positioning result is obtained. Finally, the signal processing priority of the algorithm module is dynamically adjusted according to the constraint positioning result, final positioning information is generated and sent to a locomotive monitoring terminal, and therefore the accuracy and reliability of railway locomotive positioning can be effectively improved.

The invention relates to an on-line evaluation system and an on-line evaluation method for the cold start-up capability of a fuel cell. The on-line evaluation system comprises a fuel cell stack, an on-line evaluation system and a DCDC, the on-line evaluation system specifically comprises an acquisition unit used for acquiring the voltage of a fuel cell stack and the current of a DCDC input end; the impedance spectrum measurement unit is used for carrying out impedance calculation; the impedance spectrum analysis unit is used for calculating polarization process information of impedance; the excitation signal unit is used for receiving an instruction of the impedance spectrum measurement unit and controlling the amplitude and the frequency of alternating current excitation superposed on the DCDC direct current; the storage unit internally comprises a maximum water capacity database; and the control unit is used for extracting the maximum water capacity database information, obtaining the maximum water capacity of the current state in combination with the calculated polarization process information, and further transmitting a control signal to the fuel cell stack. Compared with the prior art, the polarization process information can be acquired in real time, and the cold start capability of the fuel cell can be acquired and evaluated on line in combination with the maximum water capacity database.

The present disclosure relates to an electric motor having a motor terminal box and a diagnostics-signaling unit, which is at least partly located within the motor terminal box. The diagnostics-signaling unit comprises a diagnostics device and an optical output unit. The diagnostics device that is configured to determine an operating condition of the electric motor and to provide an optical-output control signal indicative of the operating condition. Furthermore, the optical output unit that receives the optical-output control signal and that is configured to provide an optical output signal according to the optical-output control signal.

The invention discloses a thin film thickness measurement system, method and device and a computer readable storage medium, and relates to the technical field of thin film thickness measurement, and the system comprises a light source unit which is used for transmitting an initial light source signal; the light splitting unit is arranged on a transmitting path of the initial light source signal and is used for splitting the initial light source signal into a first light source signal and a second light source signal; the imaging objective lens is arranged on an emission path of the first light source signal, a to-be-measured film is placed at a measurement position, and the imaging objective lens is used for irradiating the first light source signal onto the to-be-measured film, forming a measurement signal and returning the measurement signal; the reference signal unit is arranged on a transmitting path of the second light source signal and is used for returning a reference signal under the action of the second light source signal; and the imaging spectrometer is arranged on the reflection path of the light splitting unit and is used for determining the thickness of the to-be-measured film based on the reference signal and the measurement signal returned by the light splitting unit, so that the measurement accuracy of the film thickness is improved.

The utility model relates to the technical field of transformer manufacturing, in particular to pin inserting equipment with a limiting structure, which comprises a rack, the surface of the rack is fixedly connected with hydraulic telescopic rods respectively through a mounting frame, a grabbing assembly is arranged above the rack, and the grabbing assembly is connected below a transmission assembly in a sliding manner. According to the improved pin inserting equipment with the limiting structure, the connecting plate can be conveniently in butt joint with the device and an outlet point of an installation element, the connecting plate can be of a multi-angle adjusting structure under the telescopic structure of the electric push rod, the using scene broadness is improved, and if displacement deviation occurs in the transmission process of the laser displacement sensor along with the grabbing assembly, the laser displacement sensor can be automatically adjusted. An image sensing unit is transmitted to an external control displayer through a signal unit, and the external control displayer drives a linear motor or drives a lead screw through a servo motor to adjust the transverse or longitudinal translation distance so as to adjust the pin inserting position of a clamping jaw below the grabbing assembly. And the preparation rate and the working efficiency of pin installation are improved.

The invention discloses a driving circuit for optimizing switching characteristics of a silicon carbide MOSFET (Metal-Oxide-Semiconductor Field Effect Transistor), and belongs to the technical field of power electronics. After an input voltage VCC is isolated and converted by the isolation power supply unit, the input voltage VCC is input to the driving power supply unit for level conversion, and then a driving positive voltage and a driving negative voltage required by the work of the silicon carbide MOSFET are output. An input voltage VIN signal, a pulse signal VPWM, a driving positive voltage and a driving negative voltage pass through the driving signal unit to output a driving signal of the silicon carbide MOSFET; the outputs of the driving signal unit and the driving power supply unit are jointly input into the crosstalk suppression unit for crosstalk suppression, and a switching signal is output to the silicon carbide MOSFET. According to the invention, stable driving positive voltage and driving negative voltage required for switching on and switching off the silicon carbide MOSFETs can be output without being influenced by fluctuation of power supply voltage output by the isolation power supply unit, meanwhile, the rising or falling speed of driving voltage spikes generated when the silicon carbide MOSFETs work in series can be effectively inhibited, and the response speed is higher.

A vehicle control system for operating a driving function for the automated longitudinal and / or lateral control of a motor vehicle at a traffic node. The system includes sensors that provide situational data, and a control unit. The control unit identifies a lane in which the vehicle is located, in an approach road to the node, based on the situational data. The control unit determines whether at least one signal generator of a signaling unit of the node is relevant to a driving maneuver of the vehicle at the node, based on the identified lane. The control unit operates the driving function at the node based on whether at least one signal generator is relevant to the driving maneuver of the vehicle at the node.

An in-memory computation device includes a word line activation circuit that receives an input signal indicative of input values and provides activation signals each as a function of the input value. The in-memory computation device further includes a memory array, a biasing circuit generating a bias voltage and a digital detector. The memory array has memory cells coupled to a bit line and each to a word line. Each memory cell stores a computational weight. In response to an activation signal, a cell current flows through each memory cell as a function of the bias voltage, the activation signal and the computational weight. A bit line current flows through the bit line as a function of a summation of the cell currents. The digital detector is coupled to the bit line, samples the bit line current and, in response, provides an output signal.

The embodiment of the invention provides a signal transmission method and related equipment, which can ensure that the optical powers of two paths of local oscillation light for performing coherent demodulation on signal light are in an equal or approximately equal state, and effectively reduce the complexity and time delay of an adjustment process. The method comprises the following steps: a signal unit receives signal light through a signal optical fiber; the polarization beam splitting rotator divides the local oscillation light into first local oscillation light and second local oscillation light; the first optical splitter splits the first local oscillation light to obtain third local oscillation light and first detection light, and the second optical splitter splits the second local oscillation light to obtain fourth local oscillation light and second detection light; the comparator indicates the first power adjusting unit to output fifth local oscillation light according to the third local oscillation light and also indicates the second power adjusting unit to output sixth local oscillation light according to the fourth local oscillation light according to the magnitude relationship between the optical power of the first detection light and the optical power of the second detection light; and the fifth local oscillator light and the sixth local oscillator light are used for performing coherent demodulation on the signal light.

Procedures, methods, architectures, apparatuses, systems, devices, and computer program products for low-power wake-up signal, LP-WUS, cell selection. A wireless transmit-receive unit, WTRU, may indicate information related to WTRU capability for cell selection procedure to a gNB. The WTRU may indicate its type of low-power wake-up receiver, LP-WUR, e.g., a first type of WTRU has no energy harvesting capability, a second type has energy harvesting but no energy storing capability, a third type has energy harvesting and energy storing capabilities. The WTRU may receive one or more cell configurations. The cell configurations may indicate a first cell type, where a cell transmits both energy harvesting sequence and low-power synchronization signal, LP-SS, and a second cell type that transmits only LP-SS. The WTRU may select, or prioritize for selection, cells based on the WTRU type, energy storage status, and cell type.

The utility model discloses a threading machine with measurable lead length, which comprises a shell, a lead, a take-up reel and a driving device, the take-up reel can rotate relative to the shell, the lead is collected in the take-up reel, one end of the lead passes through the driving device, the driving device is used for driving the lead to move, take-up and pay-off, and the take-up reel is pushed and pulled to rotate in the process of moving, take-up and pay-off of the lead. A display module and an induction unit are arranged on the shell, a signal unit matched with the induction unit in an induction mode is arranged on the take-up reel, the induction unit is electrically connected with the display module, and when the driving device drives the lead to move, take-up and pay-off and the take-up reel rotates relative to the shell, the induction unit inducts the signal unit and displays the signal unit through the display module. The lead length displayed by the display module is convenient for a user to know the length and the specific position of the lead during actual operation, so that the operation is convenient.

An image encoding and decoding method and apparatus are provided. The image decoding method includes obtaining a difference quantization parameter for a current coding unit from a bitstream, based on an area of a predefined difference quantization parameter signaling unit; obtaining a quantization parameter for the current coding unit by using a predicted quantization parameter for the current coding unit and the difference quantization parameter for the current coding unit; obtaining at least one inverse-quantized coefficient by performing inverse-quantization on at least one coefficient obtained based on residual information of the current coding unit included in the bitstream, based on the quantization parameter for the current coding unit; obtaining a residual block of the current coding unit, based on the inverse-quantized coefficient; and obtaining a reconstructed block of the current coding unit, based on the residual block of the current coding unit.

The invention relates to the technical field of radar monitoring, in particular to a pluvial area airport bird monitoring method and system based on a bird detection radar, and the method comprises the steps: collecting real-time and historical meteorological data and bird detection radar signal data through a data collection module, and determining the current rainfall intensity; the background noise analysis module sets a rainfall intensity threshold according to historical meteorological data, dynamically adjusts the size of a background window according to the current rainfall intensity, calculates the intensity weight and the distance weight of each signal unit, and generates accurate background noise estimation; the target detection module initializes primary and secondary thresholds according to background noise estimation, performs double screening on signal units in a background window, generates target signal units, and dynamically modifies the thresholds in real time by establishing a relation model between the rainfall intensity and the screening thresholds, so that the accuracy and robustness of target detection are improved, and the accuracy and robustness of target detection are improved. The problem that a traditional system is inaccurate in background noise estimation and poor in fixed threshold detection effect under different rain intensity conditions is effectively solved.

The invention relates to the technical field of vehicle window management, and discloses a vehicle window ripple anti-pinch management system capable of intelligently recognizing a bumpy road surface. The vehicle window ripple anti-pinch management system comprises a cabin body, a linear sliding rail, an elastic piece and a sliding block; linear sliding rails are symmetrically arranged on the two walls of the inner side of the cabin body, two sets of elastic pieces are arranged in a reserved gap between the linear sliding rails in an up-down mirror image mode, a sliding block is contained and restrained in the center area of the elastic pieces, and the two ends of the sliding block are connected with the linear sliding rails in a sliding coupling mode. The acquisition module is used for taking a central section of the linear slide rail as a coordinate reference and acquiring a displacement vector of the slide block relative to the coordinate reference; operation state data of the target vehicle are obtained; the running state data comprises a vehicle running speed, a vehicle acceleration, a vehicle running angle and a suspension system telescopic parameter; the filter unit is used for establishing a supplementary signal unit and obtaining an expected filter value based on output of the supplementary signal unit; and filtering the current parameter of the vehicle window motor based on the expected filter value to obtain a net parameter, and managing the running state of the vehicle window based on the net parameter.

The invention discloses a vehicle measurement data conversion processing method, system and device and a medium, mainly relates to the technical field of measurement data conversion, and is used for solving the problems that manual operation is needed and the working efficiency is low in the existing vehicle data processing process. Comprising the following steps: traversing and reading measurement data of each channel signal unit in a current sampling period according to the number of channel signal units in a channel group; importing the aligned data into a matlab working space, and updating a name into a character variable name at the same time; automatically adding a corresponding signal input module in the application software to be simulated, and setting associated data of each signal input module in the matlab working space; replacing the input interface module with a signal input module with the same name; and extracting the sampling time interval and the maximum time parameter of the time quantum in the matlab working space, and further adjusting the simulation step length and the simulation time parameter in the to-be-simulated application software to obtain the adjusted application software.

The application discloses a self-interference cancellation device in a full duplex system, which is an independently deployable hardware module connected between a radio frequency transceiver and an antenna, and comprises a switch matrix and a phase shift network unit, a control signal unit, an interface unit and a power supply unit. The switch matrix and the phase shift network unit comprise a radio frequency switch matrix and an inverter composed of a balun transformer; the control signal unit comprises a microcontroller. The microcontroller is configured to output a periodic control signal to synchronously control the radio frequency switch matrix to alternately switch the connection between the two antennas and the transmitting and receiving ports in the first half cycle and the second half cycle in a control period, and synchronously control the phase shift network to introduce a 180-degree fixed phase shift in the second half cycle. Through the above operation, the self-interference signal spectrum is moved away from the baseband, and then low-pass filtering is performed on the latter stage to realize endogenous elimination. The application does not need channel estimation, has simple hardware architecture, low cost and good compatibility, and is convenient for full duplex upgrading of existing equipment.

According to the station steel rail potential monitoring terminal disclosed by the utility model, through cooperative arrangement of the signal I / O unit, the data processing module and the server module, signals are collected from the steel rail through the signal I / O unit; the signals are subjected to scaling, filtering, common-mode interference removal and isolation processing, so that the accuracy and the stability of the signals are ensured; the data processing module carries out high-speed sampling on the processed signals and carries out data interaction with the server module through modes of 4G / CAT1, WIFI, 100M ETHERNET and the like, the average value, the maximum value and the minimum value of all sampling values are obtained, the sampling values are converted into physical values through the transformation ratio and the offset, data are uploaded to the server module through an MQTT protocol, high-frequency sampling is carried out on the steel rail potential signals, and the steel rail potential signals are sent to the server module. Proper data samples are provided for deep learning in the aspect of railway system management.

The utility model relates to a 4G mechanical arm valve controller which comprises a single-chip microcomputer, and a monitoring signal unit, a driving signal unit, a feedback signal unit and a main control chip power supply unit which are connected with the single-chip microcomputer, and the output end of a man-machine interaction module and the output end of a remote control signal receiving module are connected to the input end of the single-chip microcomputer; the input ends of the power supply driving control circuit and the motor positive and negative rotation driving control circuit are connected with the output end of the singlechip; the input end of the feedback signal and indicating lamp circuit is connected with the signal end of the controlled valve motor through the feedback signal communication extension socket module. The remote communication module is in serial bidirectional communication connection with the single-chip microcomputer. On the basis of realizing on-site and remote on-off and opening control of two valves, the controller can also feed back working condition parameters such as opening and stopping of each valve to the on-site and remote control ends, realizes the purpose of real-time monitoring, and is particularly suitable for centralized control of 90-degree on-off pipeline valves controlled by a servo motor.

The invention discloses an analog switch circuit, a multi-path selection change-over switch and electronic equipment. The analog switch circuit comprises a switch unit, a first dynamic bias unit, a second dynamic bias unit and a control signal unit, wherein the control signal unit is used for generating a first control signal and a second control signal according to a system control signal; the switch unit is used for connecting or disconnecting a transmission path of an analog signal according to the first control signal and the second control signal; the first dynamic bias unit and the second dynamic bias unit are respectively used for selecting output voltage according to the first control signal and the second control signal so as to control bias voltage of the first bias end and the second bias end of the switch unit. According to the analog switch circuit, the working performance of an analog switch is greatly improved while rapid on-off switching is realized.

The invention relates to a feedback system (10) for an electric vehicle (12), comprising an electric motor (18) and a service brake (22). The electric motor has a brake unit (20). A control unit (24) is provided. The control unit (24) is connected to the electric motor (18) and the service brake (22) via a signal connection. The brake unit (20) brakes the electric vehicle (12) up to a first point in time. The service brake (22) brakes the electric vehicle (12) after the first point in time. A second point in time is present. The second point in time occurs at or after the first point in time. A third point in time occurs at or after the second point in time. At the third point in time, the electric vehicle (12) comes to a standstill. The invention is characterized in that a signal unit (26) is provided. The signal unit (26) is connected to the control unit (24) via a signal connection.The signaling unit (26) generates and displays a signal for the driver at the second time point.

The invention discloses a low-orbit large spacecraft aluminum alloy framework autonomous disintegration system and a control method. The low-orbit large spacecraft aluminum alloy framework autonomous disintegration system comprises an aluminum alloy framework, an activation signal unit and a liquid metal triggering unit. The activation signal unit is used for receiving an external signal and sending an activation signal to the liquid metal triggering unit; the liquid metal triggering unit comprises liquid metal, a storage bin for sealing the liquid metal and a protective gate; the protective gate is arranged between the liquid metal and the aluminum alloy framework so as to isolate the liquid metal from the aluminum alloy framework; the protection gate receives the activation signal and releases the liquid metal, so that the liquid metal makes contact with the aluminum alloy framework and diffuses and permeates into the aluminum alloy framework along the grain boundary of the aluminum alloy, the structural integrity is destroyed, the spacecraft is decomposed, the orbit is lowered under the influence of residual atmosphere and the like, and finally the spacecraft enters the atmosphere to be completely burnt out. Compared with the prior art, the device can be controllably disassembled, and space junk is avoided.

According to the automatic opening, closing and stopping system for the roller shutter door, a complete and clear control link is established among a roller shutter door motor, a roller shutter door controller, a PLC, a relay assembly, a limiting detection unit and a trigger signal unit, so that the opening, closing and stopping actions of the roller shutter door can be controlled to be executed under the condition of multi-signal input. Therefore, the limitation that a traditional roller shutter door only depends on a single button or is operated in a manual mode is overcome. The PLC collects instructions from the trigger signal unit through the input module and can establish logical judgment relations between different action instructions and door body states in combination with position signals obtained by the limiting detection unit, it is ensured that the roller shutter door only executes corresponding actions under the safe and allowable conditions, and the safety of the roller shutter door is guaranteed. And potential safety hazards such as top rushing, overwinding or reverse action caused by inaccurate position judgment in a traditional system are effectively avoided.

The present invention discloses a method and device for demodulating and analyzing large Doppler frequency shift (OTFS) satellite communications, belonging to the field of satellite communications. The device includes a data acquisition unit, an IQ imbalance calculation unit, an amplitude error calculation unit, a continuous phase signal generation unit, a convolution detection frame header determination unit, two guard slot removal units, two receive reference signal acquisition units, a sampling phase error acquisition unit, two theoretical demodulation reference signal generation units, a channel model extraction unit, a Doppler frequency error calculation unit, a Doppler frequency error elimination unit, a phase error calculation unit, a Doppler phase error elimination unit, a channel estimation unit, an interpolation and smoothing unit, a channel error elimination unit, a Wigner transform unit, a symplectic finite Fourier transform unit, a digital modulation and demodulation unit, and an error vector magnitude (EVM) calculation unit. The present invention can achieve high-precision demodulation and analysis of large Doppler frequency shift (OTFS) orthogonal time-frequency-space modulation (6G) satellite communication signals.

The application discloses a thyristor trigger signal and driving circuit for non-controlled rectification of a direct-current bus voltage, comprising a voltage comparison unit, a pulse wave generation unit, a trigger signal unit and a driving unit; the voltage comparison unit is used for judging a thyristor opening time and sending an output effective level signal to the trigger signal unit; the pulse wave generation unit is used for generating a frequency-adjustable pulse wave and sending the pulse wave to the trigger signal unit; the trigger signal unit is used for synthesizing a trigger signal based on the effective level signal and the trigger signal and sending the trigger signal to the driving unit; and the driving unit is used for controlling conduction of the thyristor based on the trigger signal. The application greatly improves reliability of the thyristor driving, avoids problems of power waste and large loss of a driving power supply, and can be applied to high-power frequency converter products in batches.

The invention discloses a signal transmission method and device, communication equipment and a readable storage medium, and belongs to the technical field of communication, and the signal transmission method comprises the steps that first equipment carries out backscattering modulation according to a to-be-transmitted information bit and a second signal to obtain a first signal; wherein the second signal is a carrier signal of the first signal; the first signal comprises at least one first signal unit, each first signal unit comprises two chirp spread spectrum CSS symbols, the average powers or reflection coefficients of the two CSS symbols are different, and other parameters, except the average powers and the reflection coefficients, of the two CSS symbols are the same; the information bits to be transmitted are modulated through the frequency of each CSS symbol in each first signal unit; and sending the first signal.

The invention discloses a converter station AC / DC filter unbalance current detection device and method based on digital frequency conversion. The device comprises a voltage signal acquisition unit, a small signal current acquisition signal unit, an unbalance current calculation unit, a digital frequency generation unit and a high-voltage power unit. The digital frequency generating unit drives the high-voltage power unit to generate a variable-frequency high-voltage alternating-current source, the unbalanced current calculating unit controls the amplitude output by the high-voltage alternating-current source, the voltage signal collecting unit collects the voltage applied to the alternating-current and direct-current filter, and the small-signal current collecting signal unit collects unbalanced current. The unbalanced current calculation unit calculates an unbalanced current value under an actual working condition by measuring the voltage, the current and the frequency; the unbalanced current of the AC / DC filter can be accurately measured, the applied voltage is measured through the voltage signal acquisition unit, and the actual on-site unbalanced current value is converted.