25 results about "Transmission distortion" patented technology

The invention relates to the technical field of intelligent control, and comprises an intelligent control method and system for boiler denitration, and the method comprises the following steps: obtaining a NOx concentration calculation difference value of a current period and a previous period, generating a jump concentration judgment result, screening a response region according to the judgment result in combination with a disturbance ratio, calculating a response time delay, and generating time delay data, fitting lagging and residual errors to generate a correlation coefficient, extracting a forward relation microcell, calculating and correcting ammonia injection parameters, and generating a regulation and control record. According to the method, through ratio analysis of concentration jump and disturbance deviation, local anomaly recognition precision is enhanced, response area recognition stability is optimized in combination with point position set statistics, the reaction dynamic state is defined through time sequence tracking of ammonia spraying starting and NOx response, the time efficiency control force is improved and adjusted, and an error correlation path is established through linear fitting of residual errors and lags; and analyzing a transmission distortion source, and implementing proportion and concentration joint correction in combination with a hysteresis relationship, so that accurate dosing of ammonia water is realized, and the efficiency and dynamic stability of boiler flue gas denitration are enhanced.

The invention relates to the field of conductive slip rings, in particular to a strong and weak current isolation conductive slip ring, which comprises a shell, a first contact compensation device, a second contact compensation device and a multi-layer shielding structure, and is characterized in that a strong conductive inner ring, a weak conductive inner ring, a strong conductive outer ring and a weak conductive outer ring are coaxially arranged in the shell; the first contact compensation device is fixed on the inner wall of the strong conductive outer ring and is used for adjusting the contact pressure between the electric brush and the strong conductive inner ring, the second contact compensation device is fixed on the inner wall of the weak conductive outer ring and is used for adjusting the contact pressure between the electric brush and the weak conductive inner ring, and the multi-layer shielding structure is arranged between the strong conductive system and the weak conductive system. And strong and weak current complete isolation is realized. The contact pressure between the electric brush and the conductive inner ring can be adjusted, the electric brush structure can automatically and elastically compensate along with abrasion of the conductive inner ring, it is ensured that the contact surface always keeps stable pressure and area, and the problems of poor contact, transmission distortion or failure caused by long-term friction of a traditional conductive slip ring are effectively solved.

The invention provides an indoor positioning method based on CSI amplitude and phase spatial-temporal feature fusion, and relates to the technical field of indoor positioning. The invention provides an unsupervised CSI (Channel State Information) abnormal value correction algorithm (OCBADk) based on k neighbor distance vector box plot adjustment, which is used for effectively correcting abnormal CSI signals caused by environmental noise and transmission distortion. According to the invention, a dual-channel CSI fusion positioning network (DCFNet) is designed, time and space features of CSI can be efficiently extracted and fused, and potential information in CSI fingerprints is fully mined. The invention provides a two-stage dynamic adaptive probability weighting algorithm (TDAP), in the first stage, a spectral clustering method is utilized to adaptively obtain the number m of reference points so as to estimate the rough position of a test point, and in the second stage, the accurate position estimation is realized through a weighted m neighbor method.

This application discloses a method for enhancing the quality of bare fiber sensing signals in vehicle-mounted vibration environments. It relates to the field of fiber optic sensing signal quality enhancement, and utilizes a multi-axis inertial measurement unit and a vibration sensing network to construct a spatiotemporal feature tensor, enabling three-dimensional dynamic perception of the vibration environment. Filtering parameters and gain are dynamically configured based on vibration characteristics to ensure stable signal acquisition under strong vibration conditions. A deep feature decoupling network, combined with vibration environment information, effectively separates noise from the target signal, improving the signal-to-noise ratio. A dynamic compensation module, based on a physical heuristic model, corrects vibration-induced transmission distortion from three dimensions: polarization state, birefringence, and microbending loss, ensuring the physical integrity of the signal. A closed-loop collaborative control mechanism dynamically optimizes the parameters of each module through real-time signal quality feedback, forming an adaptive optimization closed loop. Through spatiotemporal multi-dimensional collaborative processing, high-quality and robust enhancement of bare fiber sensing signals in vehicle-mounted vibration environments is achieved.

The application discloses a kind of pressure-resistant waterproof cable and preparation method thereof, it is related to cable technical field, to solve the problem of insufficient waterproof performance and limited pressure resistance of existing cable, including cable core, the outside of the cable core is equipped with insulation layer, the outside of the insulation layer is equipped with inner waterproof layer, the outside of the inner waterproof layer is equipped with pressure-resistant layer, the outside of the pressure-resistant layer is equipped with outer waterproof layer, the outside of the outer waterproof layer is equipped with outer sheath.The application has greatly improved the waterproof performance of cable, effectively prevents moisture from penetrating into the cable inside, avoids the signal transmission distortion, noise interference and other problems caused by the performance decline of insulation layer, at the same time, significantly enhance the pressure resistance of cable, so that it can effectively protect the internal structure when being extruded or collided by external force, guarantee the stability of signal transmission.

The present invention relates to the field of conductive slip rings, and more specifically, to a conductive slip ring for isolating strong and weak currents. The slip ring comprises a housing, a first contact compensation device, a second contact compensation device, and a multi-layer shielding structure. A strong conductive inner ring, a weak conductive inner ring, a strong conductive outer ring, and a weak conductive outer ring are coaxially arranged within the housing. The first contact compensation device is fixed to the inner wall of the strong conductive outer ring and is used to adjust the contact pressure between the brush and the strong conductive inner ring. The second contact compensation device is fixed to the inner wall of the weak conductive outer ring and is used to adjust the contact pressure between the brush and the weak conductive inner ring. The multi-layer shielding structure is disposed between the strong conductive system and the weak conductive system to achieve complete isolation between strong and weak currents. The present invention can adjust the contact pressure between the brush and the conductive inner ring. The brush structure automatically elastically compensates as the conductive inner ring wears, ensuring that the contact surface maintains stable pressure and area, effectively solving the problems of poor contact, transmission distortion, or failure caused by long-term friction in traditional conductive slip rings.

The application relates to a data redundancy coding method based on a deterministic network cooperative transmission, comprising the following steps: calculating node-to-node cooperative transmission distortion, single data redundancy coding, multi-data redundancy coding, calculating a deterministic network system distortion, quantifying the correlation between redundancy coding parameters, updating the redundancy coding parameters, quantifying the relationship between different data redundancy coding parameters, determining optimal redundancy coding parameters, determining optimal redundancy coding parameters and the number of data packets according to the above steps, and designing a redundancy transmission system. The relationship between the number of packets, redundancy coding parameters and quantization coefficients during multi-packet redundancy transmission is derived through nonlinear fitting, the total distortion cost in the case is modeled, optimal parameters are selected for multi-packet redundancy transmission system design, and the link distortion caused by redundancy transmission can be minimized while high reliability is ensured.

The utility model discloses a novel bit error rate test circuit which comprises an MCU controller, a clock source circuit and a signal shaping circuit. And the MCU controller is connected with the two to realize a control function. The clock source circuit extracts a clock signal and provides a time reference for the signal shaping circuit. The signal shaping circuit is composed of a chip U603, a crystal oscillator Y2, a plurality of capacitors, resistors and the like and can filter input signals in a balanced mode and compensate transmission distortion. In a data transmission and processing system, a stable clock is crucial, so that a chip U603 can accurately sample and process an input signal, and error codes and data loss are avoided. Meanwhile, a resistor (such as R630) and a capacitor (such as C616, C617 and the like) in the circuit form a power supply filtering decoupling network, the power supply voltage is smoothed, the influence of fluctuation on the chip U603 is reduced, and the overall reliability of the circuit is improved.

The utility model discloses multi-channel full-rate bit error rate test equipment, which comprises an MCU (Microprogrammed Control Unit) controller, a pseudo-random code pattern generator, a pseudo-random code pattern detector, a clock source circuit, a signal shaping circuit and a power supply circuit, the MCU controller, the clock source circuit and the signal shaping circuit are connected with the pseudo-random code pattern generator and the detector. And the MCU controller receives a user instruction to set test parameters, flexible adjustment can be performed according to different requirements, and the universality and applicability of the equipment are enhanced. The clock source circuit provides a time reference for signal processing, ensures accurate generation and synchronous detection of pseudo-random code patterns, and improves the statistical accuracy of bit error rates. The signal shaping circuit balances and filters input signals, compensates transmission distortion, improves signal quality, reduces misjudgment caused by distortion, and improves error rate calculation precision. The pseudo-random code pattern generator and the detector count the number of error codes and calculate the error rate, and provide key data for evaluating the transmission quality of a communication system.

The utility model relates to the technical field of scanning probe microscopes, and discloses a high-precision electrical measurement probe clamping device which is at least applied to a scanning probe microscope. The device comprises a base; the clamping structure is arranged on the base, and an accommodating space is defined by the clamping structure and the surface of the base; the clamping structure at least partially forms electric shielding between the containing space and the external environment. As the clamping structure forms electric shielding between the accommodating space and the external environment, broadband radio frequency interference in the space can be prevented from invading a signal link through radiation coupling, and high-frequency weak capacitance signal transmission distortion is avoided. Moreover, the clamping structure can clamp the probe assembly, so that the position of the probe assembly is fixed in the measurement process, and the measurement error caused by the shaking of the probe assembly is reduced. Through the synergistic effect of electric shielding and mechanical clamping, the influence of electromagnetic interference and mechanical disturbance on signals is reduced, and then the accuracy and reliability of the electrical property measurement result of the material are improved. The utility model also discloses a scanning probe microscope.

The application provides a transformer frequency response test device and method based on convolution compensation, which comprises a signal generating unit, a double-channel signal collecting unit, a data storage and interaction unit, a central processing and control unit, a standardized interface module and a calibration module. By injecting a broadband calibration signal into the test cable, the incident signal, the output signal and the reflected signal are collected to calculate the preliminary transfer function of the cable; the cable transfer function is fitted based on the convolution integral model, the phase frequency characteristic is directly measured by using the reflected signal, and the transfer function of the cable is obtained; then the transformer frequency response test is carried out, the transmission distortion of the excitation cable and the response cable is respectively deconvoluted and compensated, the real transfer function of the transformer winding is calculated, and the amplitude frequency and phase frequency characteristic curves are generated. The frequency coupling effect of the cable is described by introducing the convolution integral operator, the accuracy of the transformer frequency response test is improved, and a reliable basis is provided for the winding deformation diagnosis.

The invention belongs to the technical field of early warning devices, and discloses an energy storage EMS fault early warning device which comprises a box body playing a protection role, and a transmission mechanism, an acquisition mechanism, an amplification mechanism and an alarm display mechanism are installed in the box body. An existing device has the problems of single monitoring, transmission distortion, complex structure and the like, the device adapts to multi-parameter monitoring through multiple groups of ratchet wheels and corresponding acquisition mechanisms, a deformation plate drives an ejector rod to drive a gathering rotating rod to rotate through a pawl, and a roller pushes a sliding block to enable a rack to drive a pointer to indicate a fault level on a fluorescent dial; acousto-optic early warning is achieved in cooperation with a multi-color alarm lamp, more than three parameters can be monitored through the multi-ratchet design, and the transmission precision is improved through a double-gear anti-backlash and self-lubricating structure.

The application discloses a new type of hydraulic driving swing plate wave making device and relates to the field of soil centrifugal simulation test devices. The traditional linear hydraulic wave making device mechanism is prone to problems such as jamming, liquid leakage, wave form transmission distortion and the like when running at high speed under a super gravity field. The application utilizes the natural anti-centrifugal force characteristics of a servo hydraulic swing cylinder, and uses a heavy load cylindrical rod to directly hinge a wave making plate and the hydraulic swing cylinder, thereby simplifying the transmission mechanism, overcoming the non-uniform deformation of the linear hydraulic mechanism and the transmission mechanism under a super gravity field, and overcoming the above-mentioned problems such as the existence of high-order harmonics in wave form transmission. The application has the advantages of stable and reliable mechanism and small deformation, improves the transmission efficiency and service life of the equipment, and can realize high water depth, high frequency and large amplitude wave making under a super gravity field.

The present invention relates to the field of intelligent control technology, including a method and system for intelligent control of boiler denitrification, comprising the following steps: obtaining the calculated difference between the current and previous cycle NOx concentrations, generating a jump concentration determination result, screening the response area based on the determination result in combination with the disturbance ratio, calculating the response delay to generate delay data, fitting the lag and residual to generate a correlation coefficient, extracting the positive relationship micro-area calculation and correcting the ammonia injection parameters, and generating a control adjustment record. In the present invention, the accuracy of local anomaly identification is enhanced by analyzing the ratio of concentration jump to disturbance deviation, optimizing the stability of response area identification by combining point set statistics, tracking the timing of ammonia injection startup and NOx response to clarify the reaction dynamics, improving the regulation time control power, linearly fitting the residual and lag to establish an error correlation path, analyzing the source of transmission distortion, and implementing a joint correction of proportion and concentration in combination with the lag relationship to achieve precise ammonia dosing and enhance the efficiency and dynamic stability of boiler flue gas denitrification.

The utility model discloses a large-angle buffer hinge, which comprises a hinge cup, a buffer device and a hinge arm, the buffer device is arranged on the hinge cup, the buffer device extends outwards to form an abutting part, the hinge arm is in transmission connection with the hinge cup through a connecting rod structure, and when the hinge cup is folded towards the hinge arm, the hinge arm is in transmission connection with the hinge cup. The abutting part abuts against the upper end face of the hinge arm and activates the buffering device, the connecting rod structure comprises a first connecting rod, a second connecting rod and a torsional spring, the torsional spring is hinged to the hinge arm, and one connecting end of the torsional spring abuts against the second connecting rod. The buffering device is arranged on the hinge cup, the buffering device and the hinge cup move synchronously, the transmission distortion phenomenon is avoided, meanwhile, the buffering device does not occupy the inner space of the hinge arm, the torsion spring is moved backwards, the force arm is arranged more reasonably, and meanwhile the first connecting rod and the second connecting rod have larger opening space. Compared with the prior art, the large-angle buffering hinge is better in closing effect and can be opened and closed at a larger angle.

The invention provides a bearing internal contact force detection device and method, and the device comprises a fixed seat, a mounting shaft, an auxiliary bearing, a locking part, a strain gauge, a slip ring, a pin and a signal collection line, one end of the mounting shaft is rotatably connected with the fixed seat, and the other end of the mounting shaft is detachably connected with a to-be-detected bearing; the auxiliary bearing sleeves the mounting shaft; the locking piece is arranged on the fixed seat and is connected with the outer ring of the auxiliary bearing so as to prevent the outer ring of the auxiliary bearing from rotating; the strain gauge is used for being installed on a retainer of a to-be-measured bearing. The slip ring is fixed on the outer ring of the auxiliary bearing; one end of the pin is fixedly connected with a retainer of the auxiliary bearing, and the other end of the pin is slidably connected with the slip ring; the signal acquisition line is connected with the strain gauges and the pins. The signal acquisition line can be prevented from being wound, and signal transmission distortion is prevented under high-speed rotation.

The display panel and the electronic equipment provided by the embodiment relate to the technical field of display. In the region corresponding to the anode block, the fourth metal layer forms signal lines, and the orthographic projection of the signal lines on the substrate layer is axially symmetrically distributed relative to the symmetry axis of the orthographic projection of the anode block on the substrate layer, and at least one signal line in the fourth metal layer is connected with a signal line in the first metal layer, the second metal layer or the third metal layer. The above design can make the anode block more flat, and improve the color deviation of the display panel on the opposite side caused by the uneven anode block, on the one hand, by axially symmetrically distributing the signal lines formed by the fourth metal layer relative to the symmetry axis of the orthographic projection of the anode block on the substrate layer. On the other hand, the signal line in the fourth metal layer is connected with the signal line of the other layer, which can increase the area of the signal line, reduce the resistance of the signal line, reduce the loss of the signal in the transmission process, and reduce the influence of the signal transmission distortion on the display effect.

The invention provides a diffraction and metamaterial phase device error correction method and system based on pre-compensation, and belongs to the technical field of photoelectric information processing and optical device correction. The compensation pattern is optimized using a back propagation algorithm to counteract transmission distortion caused by phase optic fabrication errors. Complex reprocessing or expensive high-precision manufacturing of the phase optical device is avoided, and the inherent advantages of low delay and low energy consumption of optical calculation are kept. According to the invention, the accuracy and robustness of the optical system in the presence of preparation errors can be effectively improved, the dependence on the manufacturing process is reduced, and the practicability and expandability of the system in applications such as artificial intelligence calculation, edge reasoning and high-throughput optical processing are enhanced.

This invention discloses a method and system for controlling the wire winding of a power pole frame based on real-time tension feedback. Specifically, it relates to the field of wire winding tension control technology in the manufacturing of prestressed concrete power poles, and is used to solve the problems of tension feedback distortion and uneven prestressing caused by the dynamic changes in the friction coefficient between the steel wire and the frame in existing technologies. By acquiring the steel wire tension feedback value and the axial position information of the winding head in real time, the system judges control anomalies based on tension deviations. When an anomaly occurs, it continuously calculates the higher-order statistics of the tension value and identifies the directional change of the friction state based on its evolution trajectory. It correlates this evolution feature with the axial position to determine the spatial propagation characteristics of the friction state change, evaluates the degree of tension transmission distortion based on this feature, and finally dynamically compensates and adjusts the tension control system parameters according to the degree of distortion. This method can effectively identify and compensate for tension distortion caused by time-varying friction, and improve the uniformity and accuracy of prestressing application.

This invention discloses a method and system for controlling the wire winding of a power pole frame based on real-time tension feedback. Specifically, it relates to the field of wire winding tension control technology in the manufacturing of prestressed concrete power poles, and is used to solve the problems of tension feedback distortion and uneven prestressing caused by the dynamic changes in the friction coefficient between the steel wire and the frame in existing technologies. By acquiring the steel wire tension feedback value and the axial position information of the winding head in real time, the system judges control anomalies based on tension deviations. When an anomaly occurs, it continuously calculates the higher-order statistics of the tension value and identifies the directional change of the friction state based on its evolution trajectory. It correlates this evolution feature with the axial position to determine the spatial propagation characteristics of the friction state change, evaluates the degree of tension transmission distortion based on this feature, and finally dynamically compensates and adjusts the tension control system parameters according to the degree of distortion. This method can effectively identify and compensate for tension distortion caused by time-varying friction, and improve the uniformity and accuracy of prestressing application.

The present application belongs to the technical field of chaotic secure communication, and particularly relates to a microwave communication system and method based on chaotic carrier superimposed encryption, which comprises a chaotic feedback loop of a sending end, a superimposed device of an optical signal of information to be encrypted and a chaotic optical signal, and a chaotic feedback open loop link of a receiving end, characterized in that the superimposed device is a balanced detector; the receiving end further comprises a power divider, a photoelectric detector and an electric subtractor, the power divider divides the received electrical signal into two paths, one of which enters an input end of the chaotic feedback open loop link, and the other of which enters an input end of the electric subtractor, an output end of the chaotic feedback open loop link is connected with an input end of the photoelectric detector, and an output end of the photoelectric detector is connected with the other input end of the electric subtractor, the communication method is based on linear superimposition of the chaotic carrier and the encryption information power by the balanced detector, and has the advantages of simple structure, high security, and small transmission distortion.

The invention provides an antenna, an antenna array and electronic equipment, the antenna comprises a radiation unit and a liquid crystal regulation and control layer, the radiation unit is used for radiating beams, the liquid crystal regulation and control layer is located in a first direction of the radiation unit, the first direction is a propagation direction of the beams, and the liquid crystal regulation and control layer comprises at least one tuning unit, the at least one tuning unit comprises a liquid crystal and a metal layer, the metal layer covers the surface of the at least one tuning unit, the metal layer comprises a metal pattern, and the metal pattern is used for enabling the resonant frequency of the at least one tuning unit during beam conduction to correspond to the working frequency of the antenna; the at least one tuning unit is used for conducting a wave beam when the dielectric constant of the liquid crystal is the dielectric constant in the short-axis direction, or the at least one tuning unit is used for blocking the wave beam when the dielectric constant of the liquid crystal is the dielectric constant in the long-axis direction. According to the antenna, the radiation efficiency of the radiation unit can be improved, and the situation of signal transmission distortion is reduced.

The utility model discloses an electric power fault recording analysis device, belongs to the technical field of electric power equipment, and aims to solve the technical problems that the device in the prior art is usually statically arranged in a machine room, and dust and impurities in air can enter the equipment from an exposed socket position of the device due to static electricity of the equipment because the air flow speed in the machine room is relatively slow. The problem that the accuracy of recording data is affected by the fact that dirt is formed at a metal contact in a long time, contact resistance is increased, signal transmission is distorted and unstable, and even a short-circuit fault is caused is solved. Comprising a main body, portable mechanisms are installed on the two sides of the main body, a wire harness storage box is arranged on one face of the main body, a display screen is arranged on one side of the front end of the main body, sockets are formed in the other side of the front end of the main body, a dustproof protection mechanism is installed at the front ends of the multiple sockets, and the dustproof protection mechanism comprises multiple front mounting frames; and the plurality of front mounting frames are separately arranged at the front ends of the plurality of sockets.

A Doppler-resilient Universal Filtered Multicarrier Modulation (DR-UFMC) apparatus (102) is disclosed. The DR-UFMC apparatus (102) is configured to generate one or more DR-UFMC pilot signals (SDR-UFMC) based on Orthogonal Time Frequency Space (OTFS) pilot signals (SOTFS), wherein the OTFS pilot signals (SOTFS) are distorted prior to transmission to account for transmission distortion from the DR-UFMC modulation scheme. The DR-UFMC apparatus (102) can be used in various applications such as vehicular communications, satellite links, and other high-speed communication systems, offering improved spectral efficiency, reduced interference, and enhanced communication stability.

The invention relates to the technical field of radio-frequency connectors, in particular to a light radio-frequency connector with high shielding performance, which comprises a radio-frequency plug and a radio-frequency socket, and is characterized in that the radio-frequency plug comprises a shell, a shielding ring, a coupling nut assembly, a positioning pin, a rear cover, a square clamp spring, a clamp spring, a clamping jaw, a radio-frequency jack and a wire sealing body. According to the light radio frequency connector with the high shielding performance, an integrated hole cavity structure of the shell and the square plate shell is matched with the shielding ring, so that multiple shielding protection is formed, external electromagnetic interference and internal signal leakage are reduced, signal transmission distortion is avoided, the light radio frequency connector is adaptive to a high-anti-interference requirement scene, and the signal transmission stability is guaranteed; light weight and connection sealing performance are optimized, structural design is simplified, positioning keys and positioning key grooves for precise positioning are matched, misinsertion and connection loosening are avoided, and use stability is improved; the sealing ring, the wire sealing body and other structures enhance the sealing effect, prevent dust and water vapor from invading, prolong the service life and adapt to complex environments.