90 results about "Signal element" patented technology

A signal sending and receiving method and device, the signal sending method comprising: determining a first signal and a first resource, the first signal being used for bearing downlink control information, the first signal comprising N signal elements, the signals corresponding to the N signal elements being the same, the first resource comprising N resource groups, any resource group in the N resource groups comprises M subcarriers on one time domain symbol, the N resource groups correspond to N time domain symbols, the N time domain symbols correspond to at least two time units, M is a positive integer, and N is a positive integer greater than or equal to 2; and sending the first signal on the first resource, wherein the N signal elements are in one-to-one correspondence with the N resource groups. According to the method, the sensing performance in a device networking scene can be improved.

The invention discloses a method for realizing signal identification of a frequency hopping unmanned aerial vehicle based on wireless spectrum analysis, which comprises the following steps: acquiring image transmission data and frequency hopping remote control data of the unmanned aerial vehicle, acquiring 50 parts of data as original data by each unmanned aerial vehicle, converting an acquired one-dimensional unmanned aerial vehicle time domain signal into a two-dimensional time frequency signal through short-time Fourier transform, the method comprises the following steps: performing signal calibration on data, constructing a model framework, extracting features of unmanned aerial vehicle signals by means of a multi-layer convolutional network of a vgg model, performing feature extraction through reasonable design of a convolution kernel and the number of network layers, and after a stable model is trained, performing feature extraction on the unmanned aerial vehicle signals. An output result of the model is converted into possible position information of each signal element of the frequency hopping unmanned aerial vehicle signal in time axis prediction on a time-frequency graph, accurate signal element positions obtained by signal matching are detected one by one to ensure independence of the signal elements, and data subjected to signal verification is subjected to data arrangement; and removing statistically redundant and repeatedly detected elements, and classifying.

Systems, methods and technology for authenticating multi-layered objects using encoded signals such as digital watermarking. In one implementation, a value document includes a substrate and a removable overlayer, with a security feature comprising a digital watermark signal printed to cover portions of both the substrate and overlayer. The digital watermark signal includes spatially arranged signal elements forming a frame of reference. Tampering is detected by evaluating offset values associated with the signal elements, where misalignment within the frame of reference indicates tampering. In some implementations, the value document includes a first digital watermark on the substrate with synchronization and payload components, a token with a second digital watermark, and a removable sticker with a third digital watermark. Additional security features include split-mark configurations, tamper mark configurations, holographic foils with overprinted digital watermarks, and fragile tamper-deterrent features that deform upon tampering attempts, causing detectable signal distortion. Other combinations are also provided.

Disclosed are techniques for wireless communication. In an aspect, a user equipment (UE) may obtain information indicating one of a plurality of network energy modes for communication between a transmission-reception point (TRP) and the UE. The UE may engage in a sidelink positioning session with at least one other UE, comprising the UE transmitting at least one sidelink positioning reference signal (SL-PRS) symbol for the sidelink positioning session based on a SL-PRS transmit power associated with the one of the plurality of network energy modes.

Methods, systems, and devices for wireless communication are described. A device may receive signaling that includes a channel state information (CSI) report configuration. The device may determine one or more resources of a physical uplink channel for an aperiodic CSI report based on the CSI report configuration, and transmit the aperiodic CSI report via the physical uplink channel based on the one or more resources. In some examples, the device may also determine a set of demodulation reference signal (DMRS) symbols associated with a jump in a set of jumps in the time domain or frequency domain, and coherently transmit the set of DMRS symbols associated with the jump in the set of jumps based on the determination.

A sleeve signalling system enables robust, mechanical and highly visible binary signalling. The system comprises an elongated signalling element comprising a signal marking, and a sleeve disposed over the signalling element. The sleeve is slidable along the elongated signalling element between a first position that covers the signal marking and a second position that uncovers the signal marking.

A dispensing nozzle for dispensing a fluid into a tank of a motor vehicle, comprising the following features: - the dispensing nozzle comprises a passage for the passage of the fluid, wherein a main valve is arranged in the passage, the main valve being movable between a closed position and an open position to control the flow of fluid, - the dispensing nozzle comprises a first maximum volumetric flow rate and a second maximum volumetric flow rate, wherein the second maximum volumetric flow rate is greater than the first maximum volumetric flow rate, according to the invention, such that the dispensing nozzle comprises an adjustable flow restrictor arranged downstream of the main valve and configured to selectively restrict the flow of fluid to the first maximum volumetric flow rate or to the second maximum volumetric flow rate. The dispensing nozzle further comprises actuating means configured for interacting with a signal element equipped to the tank of the motor vehicle and for selectively adjusting the flow restrictor to the first maximum volumetric flow rate or to the second maximum volumetric flow rate.

The invention relates to an apparatus (Rx) for increasing an integrity of signals (S) in a signaling network, each signal comprising a sequence of one or more signal elements. The apparatus comprises an identification unit configured to identify any injection (I) of signal elements into a received signal based on at least one of a) a signal element magnitude variation, b) an inversion of a permutation operation applied to the received signal upon transmission, c) a signal fingerprint, d) a location of the transmitter, and e) an AI / ML, Artificial Intelligence / Machine Learning, model. This allows for a reliable identification of injections of signal elements that are due to the capture effect. In particular, not only overshadow attacks, but also undershadow attacks or other injection attacks can be identified. By processing the received signals based on any identified injections of signal elements, the integrity of signals in the network can be increased.

A decoder receives, from a demodulator of FSK modulated signals, a sequence of demodulated symbols having level transitions between adjacent demodulated symbols and at least a part of the demodulated symbols having level transitions between adjacent signaling elements therein. A sample counter samples the sequence of demodulated symbols. A comparator performs comparison of the samples with at least one reference threshold and the results for at least three adjacent signaling elements in the decoded symbols are stored in a buffer. Logic circuitry asserts an error-in-transmission signal or an end-of-transmission signal in response to an isolated or persisting absence of level transitions detected over a reference period of time. Sampling point drift correction circuitry coupled to the buffer circuit varies the end-of-count value of the sample counter in response to an accumulated sampling point error reaching a drift reference threshold.

An autoinjector for dispensing a liquid product includes a housing; a product container arranged in the housing, particularly, a syringe comprising a displaceable piston; a drive member; a first spring which acts on the drive member and the piston to dispense the product from the container; signal element releasably axially coupled with the drive member so that the signal element is transported in the dispensing direction as the drive member is displaced; and a second spring, which exerts a spring force on the signal element against the dispensing direction and is tensioned as the signal element is transported in the dispensing direction. When the signal element is released or detached from the axial coupling, the second spring causes the signal element to accelerate opposite the dispensing direction and strike against a signal stop and generate an acoustic and / or tactile signal.

The invention relates to a safety device with a multi-channel computer structure by means of which a safety function is generated in a fail-safe manner. The multi-channel computer structure is used to control and monitor at least one signal element in a fail-safe manner.

The invention discloses an automatic placing device for road safety road cones, which comprises a container structure 3 for accommodating signal elements 2 stacked into different columns; and a discharge system 4 for removing the signal element 2 from the container structure 3 and discharging the signal element 2 from the discharge zone 7 onto the road. The aim of the invention is thus to eliminate or at least reduce the risk of accidents during certain signal operations, while simplifying these operations, not only eliminating the risk of operators, but also enabling appropriate signal indications for each case by adjusting the necessary parameters. Another advantage of the invention is that operation can be carried out on commercial cones or beacons existing in the market; in other systems in the prior art, signal elements must adapt to the specific system.

The invention relates to a method (200), a vehicle (100) and a connector device (10) for a line (12) of a vehicle (100), comprising a plug element (14), a signal element (16), wherein the plug element (12) is configured to form a connection (18) with a plug (20), wherein the connection (18) is configured to shield the signal element (16).

The utility model relates to a pressure sensor assembly, which solves the problems that the existing pressure sensor assembly is deformed and misplaced due to high-temperature brazing, and the proportion of unqualified products is high. Comprising a pressure chamber part, a pressure deformation element, a deformation supporting element and a signal element shell, a positioning containing hole is formed in the signal element shell, and the deformation supporting element, the pressure deformation element and the pressure chamber part are sequentially stacked upwards in the positioning containing hole from the bottom end of the positioning containing hole, so that positioning control is improved; the assembly concentricity of a pressure chamber part, a pressure deformation element, a deformation supporting element and a signal element shell is controlled within a required range, so that the assembly before brazing becomes very simple, the concentricity of other deformation elements before assembly and welding can be easily controlled, the precision of a brazing tool is reduced, and the production efficiency is improved. And the percent of pass of products is increased, the updating frequency of the tool is reduced, the loss of tool materials is reduced to a great extent, and the production cost is reduced.

A device assembly including a single-use device for sensing or influencing a parameter of a running bioprocess. The single-use device is configured to have at least two different defined functional states, a first functional state being an inactive delivery state in which the single-use device is sterile and inoperable according to its intended use, and a second functional state being an active use state in which the single-use device is operable according to its intended use. The device assembly further includes a signalling element for indicating a current functional state of the single-use device to a user. Each functional state is associated with a distinct signal. The device assembly is configured such that a transfer from the first functional state to any other functional state of the single-use device is irreversible and / or permanently prevents the signalling element from indicating the signal associated with the first functional state.

The invention relates to the technical field of sensors, and discloses a sleeve straight-through Rogowski coil current mutual sensor, which comprises a high-inductance framework, a winding, a composite shielding layer, an epoxy resin insulating castable, a sleeve secondary signal element, a fixing bolt, a combined secondary signal output cable and a sensor outer shell, wherein the winding comprises a coil which is uniformly wound on the high-inductance framework, the tail end of the coil is connected with a return turn to form a closed loop, the composite shielding layer is composed of a stainless steel shielding cover and a copper foil coated on the coil, the measurement range is wide, the precision is higher, the saturation is avoided, the anti-interference capability is strong, the broadband response is realized, the noise is low, the transmission signal is stable, and the size is small. The current sensor saves space, is convenient to install, and is more suitable for the field of intelligent power grid upgrading and high-voltage equipment monitoring.

The present application discloses a dose counter and an inhaler, the dose counter adapted for an inhaler, the dose counter comprising: an actuating mechanism configured to move towards a distal end when driven; a counting assembly for counting the number of uses of the inhaler based on the movement of the actuating mechanism toward the distal end, the counting assembly indicating the number of uses of the inhaler by presenting visualized numbers in a display window; and the signal element is connected with the counting assembly and is used for being driven by the counting assembly to be displayed in the display window so as to prompt a user when the number of use times of the inhaler reaches a preset number of use times.

The present disclosure relates to signal processing such as digital watermarking and other encoded signals. One claim recites a substrate comprising a plurality of first areas and a plurality of second areas, in which each of the plurality of first areas comprises a color ink printed therein with a UV topcoat layer printed over the color ink, in which the UV topcoat layer includes a material that absorbs at or around 350 nm and emits in the visible spectrum, and in which each of the plurality of second areas comprises the color ink printed therein, and in which the plurality of first areas is arranged on the substrate in a 2-dimensional pattern that is machine-readable from image data depicting the plurality of first areas, and in which the 2-dimensional pattern represents signal elements that cover only between 1-20% of an area on the substrate, and in which contrast in the image data between the plurality of first areas and the plurality second areas comprises a contrast difference in the range 75%>contrast difference>8%. Of course, other claims and combinations are provided in the specification with reference to specific implementations and related examples.

This invention proposes a Pearson correlation coefficient-based PSO decision feedback equalizer optimization method, primarily addressing the existing problem of eliminating intersymbol interference (ISI) between signal symbols after transmission over a nonlinear high-speed link. Its implementation involves: performing channel simulation in ADS software to obtain the pre-equalization impulse response waveform and the pre-equalization output response waveform, and saving their text; reading the pre-equalization impulse response text to determine its starting point, and extracting data of length l from the starting point as input data for the channel simulation; inputting this data into a decision feedback equalizer, optimizing the decision feedback equalizer tap coefficients using an improved PSO algorithm; and using the optimized feedback equalizer to equalize the input signal at the receiving end, obtaining a worst-case eye diagram representative of the quality of high-speed signal transmission. Simulation results demonstrate that this invention improves equalization effectiveness and effectively reduces ISI, making it suitable for signal equalization processing at the receiving end of high-speed links.

The present invention discloses a method for realizing frequency hopping unmanned aerial vehicle signal recognition based on wireless spectrum analysis. The method collects unmanned aerial vehicle image transmission data and frequency hopping remote control data. 50 sets of data are collected from each unmanned aerial vehicle as original data. The collected one-dimensional unmanned aerial vehicle time domain signal is converted into a two-dimensional time-frequency signal by short-time Fourier transform. The data is calibrated. A model framework is constructed. The features of the unmanned aerial vehicle signal are extracted by means of a multi-layer convolutional network of a VGG model. The features are extracted by reasonably designing the convolution kernel and the number of network layers. After training a stable model, the output result of the model is converted into the possible position information of each signal element of the frequency hopping unmanned aerial vehicle signal on the time axis prediction on the time-frequency diagram. The accurate signal element positions obtained by signal matching are detected one by one to ensure the independence of the signal elements. The data verified by the signal are sorted, the statistically redundant and repeatedly detected elements are removed, and the data are classified.

The invention provides a non-linear optical channel equalization method and system and a medium, and relates to the technical field of optical fiber communication, and the method comprises the steps: carrying out the signal element definition of an optical signal, receiving the optical signal transmitted by an optical channel, executing the signal element verification, and if there is non-linear disturbance, carrying out the signal element verification; the method comprises the following steps of: performing probability density distribution reconstruction based on amplitude on an optical signal, performing optical signal equalization processing under entropy maximization by measuring distribution entropy and triggering a probability distribution equalizer aiming at the probability density distribution, outputting a target optical signal after nonlinear equalization of the optical signal, and importing the target optical signal into an optical channel, and the probability distribution equalizer is arranged at a peripheral interface of the optical channel in an embedded manner. The technical problems that in the prior art, non-linear optical channel equalization calculation is poor in real-time performance, compensation precision is insufficient, and consequently optical communication performance and efficiency are low are solved. The technical effects that the optical signal transmission quality is efficiently and accurately improved, and thus the performance and efficiency of the whole optical communication are improved are achieved.

A distributed optical fiber sensing and transmission method and system based on optical grouping integrates signal frame and signal element concepts in the communication field to the sensing field, each measurement signal frame comprises a plurality of measurement signal elements, all-optical fiber scanning is achieved, each measurement signal element comprises a pair of time-coded pump light pulses and rectangular square wave detection light, and all-optical fiber scanning is achieved. The probe light and the pump light are injected into the optical fiber in the same direction, the probe light is reflected at the tail end of the optical fiber and then encounters oppositely with the pump light to generate scattering signals, and encounter points can be measured by analyzing the signals. Because the time intervals of the pulse square waves in each measurement signal element are different, the formed measurement signal frame can cover all measurement points on the optical fiber, thereby achieving the target of all-optical-fiber distributed measurement. According to the method, the pump light evacuation effect and the non-local effect are avoided, all points can be measured at a time on the premise that the resolution (the spatial resolution and the measurement precision) is guaranteed, and the resolution and the time efficiency are both considered.

The application provides a data analysis method and device, electronic equipment and a storage medium. The method comprises the following steps: after obtaining a SIP message to be processed, performing state conversion on the SIP message, determining the state corresponding to a string in the SIP message, then performing an action associated with the state based on a preset extraction rule to extract SIP signaling elements from the SIP message until the string reaches a final state, and obtaining a structured SIP signaling composed of all SIP signaling elements. Thus, the structured SIP signaling can be obtained through one-time scanning and matching without repeatedly traversing the string in the SIP message, so that the SIP signaling analysis efficiency is improved, and the resource consumption is reduced.

The present invention relates to the technical field of device identification, and provides an unmanned aerial vehicle identification method, apparatus, device, storage medium and program product, applied to a base station side comprising a CU-CP and a CU-UP, the method comprising: according to an access request initiated by a terminal to be identified, the CU-CP notifying the CU-UP to establish a bearer context, and adding a cell identifier in a signaling message to capture a code stream; after the bearing context is successfully established by the CU-UP, the service of the monitoring terminal is started, and unmanned aerial vehicle message feature identification is carried out according to the captured code stream; and when the target feature is identified, determining the terminal to be identified as an unmanned aerial vehicle, and reporting an identification result to the core network. According to the characteristic that the unmanned aerial vehicle terminal has the message features different from those of a common terminal, the unmanned aerial vehicle is recognized in a message feature recognition mode, the recognition precision is high, and the time efficiency is fast; the feature recognition unmanned aerial vehicle which has small influence on network performance is used for all online terminals, and the method is friendly to the network performance.

A signal is modified using a modification signal to produce a modified signal. The modified signal having been modified to contain a watermark. The modified signal or a down-sampled modified signal de

The present invention provides a method for estimating the symbol period and symbol synchronization of a rectangular pulse-shaped digital communication signal, belonging to the field of communication technology. A dynamic matrix is constructed to distinguish different symbol data; based on the dynamic matrix, the larger value of the average values obtained from two segmented matrices is taken as S[M], and the absolute value waveform of the difference of S[M] is obtained cyclically, and the initial estimate of the symbol period is obtained according to the maximum point; further, according to the initial estimate, the symbol period estimate value is obtained to achieve symbol synchronization on the basis of the symbol period estimate value. Without knowing the signal modulation system, the present invention does not add additional steps for identifying the modulation system, but directly provides a general method for estimating the symbol period of rectangular pulse-shaped digital communication signals of various different typical systems, and realizes symbol synchronization on the basis of estimating the symbol period, simplifying the entire estimation process and reducing the difficulty of hardware implementation compared with the prior art.

The present invention relates to the field of wireless communication technologies, and particularly relates to a digital predistortion method and system based on a dimensionality weighted K-nearest neighbor algorithm. The present invention classifies the current original signal U', groups signal elements with similar characteristics into one category, and altogether forms N paths. For each path of signal, a trained predistortion improvement model specific to that path of signal is equipped. N paths of current predistorted signals are processed and inversely synthesized into a total predistorted signal X, and then the current amplified signal Y is obtained through processing by a target power amplifier. The present invention solves the problems of limitations and poor flexibility existing in the existing methods. The amplified signal output by the present invention has higher anti-interference ability, stronger signal quality, and higher prediction accuracy.

The invention discloses a lead frame pushing structure and a pusher, and relates to the technical field of semiconductor production, the lead frame pushing structure comprises a pushing head, a pushing arm and a signal piece, the pushing head is movably connected to the pushing arm along a first direction, the pushing arm is used for being connected with an output end of a driving device, and the signal piece is used for receiving the signal piece. The material pushing arm can be driven by the driving device to move in the first direction, the signal piece is arranged on the material pushing head and the material pushing arm and used for being in signal connection with external control equipment, and when the material pushing head has relative displacement relative to the material pushing arm, the signal piece is in signal connection with the external control equipment. And the signal piece can transmit an alarm signal to the external control equipment. The lead frame pushing structure is more accurate in detection of the jamming condition in the material pushing process.

The present invention provides a method, medium and device for identifying and extracting ADS-B IN signal code elements under low signal-to-noise ratio based on FPGA, the method comprising: performing autocorrelation operation on input signal; generating standard pulse with pulse width of N microseconds; performing header detection after cross-correlation operation on the signal after autocorrelation operation and standard pulse; after determining the header, finding the first code element position according to pulse timing, using shift register to store N microseconds before and after the first code element; calculating the amplitude value of N microseconds before the first code element; calculating the amplitude value of N microseconds after the first code element; sampling according to an enable signal with pulse width of 2N microseconds, when the enable signal is valid, comparing the amplitude values ​​of N microseconds before and after the first code element, and outputting code words according to the comparison result; determining the number of sampling times, and completing data locking. The present invention can realize S mode 1090ES code element extraction under low signal-to-noise ratio.

The invention provides a food safety risk assessment method and device, and is suitable for the technical field of data processing, and the method comprises the steps: generating a food safety risk monitoring signal element set according to food safety wireless signal monitoring information, food safety monitoring wireless signal configuration information and food safety monitoring wireless communication node configuration information; optimizing the food safety risk monitoring signal element set to obtain food safety risk monitoring signal optimized element individuals; optimizing the element individuals according to the food safety risk monitoring signals, optimizing the configuration information of the food safety monitoring wireless signals, and obtaining configuration optimization information of the food safety monitoring wireless signals; and according to the food safety monitoring wireless signal configuration optimization information, the food safety risk information base and the food safety risk information, generating food safety risk assessment information. Wireless signals in food safety risk monitoring are optimized, timeliness of food safety risk assessment is improved, and accuracy and effectiveness of food safety risk assessment are guaranteed.