314 results about "Interference immunity" patented technology

The invention relates to the field of nonlinear system control, and provides a preset time reinforcement learning method and system of a continuous nonlinear system, and an electronic device, and the method comprises the steps: constructing a zero-sum game framework based on a kinetic model and a performance index of the nonlinear system; determining a value function and a Hamiltonian function based on a zero-sum game framework; applying a preset neural network model to carry out approximation on the value function, and determining an approximation error; based on the Hamiltonian function and the approximation error, an approximate optimal control strategy and a worst interference strategy are determined; constructing a Lyapunov function based on the value function and the weight error of the value function; and based on a Lyapunov function, an approximate optimal control strategy and a worst interference strategy, a reinforcement learning result is verified. The method and the device are used for overcoming the defects that convergence time cannot be dynamically adjusted, parameter complexity is high and robustness is insufficient in the prior art, and the scheme of the invention can meet dual requirements of a continuous nonlinear system on dynamic convergence and anti-interference performance.

The invention discloses a new energy broadband test analysis management and control method and system, and relates to the technical field of new energy detection and intelligent management and control, and the method comprises the following steps: obtaining a multi-window splicing frequency spectrum of a load switching edge, superposing phase lock consistency verification in a splicing frequency spectrum result, generating a frequency spectrum leakage suspicion chart, and carrying out the boundary constraint for energy track extraction; under the constraint of a spectrum leakage suspicion chart, an energy center track, a group delay curve and a phase derivative sequence are extracted, and a cross-frequency migration fingerprint is constructed and is used as a basic evidence for misjudgment traceability. By means of spectrum suspicion identification, feature fusion modeling, misjudgment traceability, label correction, energy reverse intervention and the like, accurate identification and closed-loop regulation and control of false operation caused by spectrum leakage are achieved, high identification accuracy, low misjudgment rate, high anti-interference performance and quick response capacity are achieved, and the operation stability and safety of a new energy field station are remarkably improved.

The invention relates to the technical field of concrete detection, in particular to a concrete protective layer void detection method and system based on a detachable piezoelectric ceramic sensor and an electromechanical impedance resonance technology. The detection method comprises the following steps: temporarily fixing a detachable piezoelectric ceramic sensor on a detection point on the surface of a concrete structure; applying an alternating-current sweep-frequency voltage to excite the piezoelectric ceramic sensor, and obtaining an electromechanical impedance signal frequency spectrum; the electromechanical impedance signal frequency spectrum is analyzed, the frequency of a local defect formant is obtained, and according to the frequency of the local defect formant, geometric parameters of a void area are estimated through a defect size and frequency relation model; and moving the sensor and repeatedly detecting other detection points. The detection method has high efficiency and flexibility, and detection can be realized in any environment; the single-point detection speed is high, the efficiency is high, baseline data is not needed for detection, the anti-interference performance is high, and rapid positioning and quantitative evaluation of void damage can be achieved.

The invention relates to a seabed trapezoidal foldable electromagnetic coil device, which belongs to the technical field of ocean electromagnetic detection and comprises a main bearing beam, an expandable transmitting coil assembly, a receiving coil assembly, a transmission connecting rod, a hinged rotating seat, a sliding connecting seat and a push-pull driving rod. The transmitting coil is of a symmetrically-distributed trapezoidal structure, the receiving coil is in sliding fit with the main bearing beam through the sliding connecting base, the push-pull driving rod is in linkage with the receiving coil to move and the transmitting coil to be unfolded / folded, the device frame is made of a macromolecule non-magnetic material, and the ferromagnetic driving component is arranged in an avoiding mode. Receiving coil plane magnetic field balance is achieved through the non-uniform magnetic field design of the trapezoidal transmitting coil, coil space optimization configuration is completed through a linkage mechanism, folding portability and anti-interference performance of a multi-layer coil are achieved at the same time, direct coupling of a primary field of the transmitting coil to receiving is effectively restrained, the stability and the signal-to-noise ratio of a detection signal are improved, and the detection precision is improved. The method is suitable for complex seabed transient electromagnetic detection scenes carried by AUV / ROV.

The invention discloses a multi-antenna anti-interference method, multi-antenna anti-interference equipment, a storage medium and a program product, and aims to solve the contradiction between poor performance of a sub-array architecture and overhigh calculation complexity of a full-array architecture. The method comprises the following steps: carrying out global synchronization processing by taking all array elements as a whole, and determining a shared synchronization point; the array is divided into a plurality of sub-arrays, each sub-array uses the synchronization point and independently calculates a set of anti-interference weights, and accordingly, sub-array output signals subjected to interference suppression are generated; and determining a group of optimal merging coefficients through an optimization algorithm with the purpose of maximizing the final signal quality, and performing weighted merging on all sub-array output signals to generate a final output signal. In addition, the method also comprises a mechanism for periodically updating an anti-interference weight and a merging coefficient. According to the method, through step-by-step processing and optimal combination, the calculation complexity is effectively reduced, meanwhile, the performance loss of a traditional sub-array scheme is avoided, and the anti-interference performance of a system in a dynamic complex environment is improved.

The invention relates to the technical field of modular multilevel converter control, in particular to an active-disturbance-rejection direct-current side fluctuation suppression method based on an MMC alternating-current side fault working condition. The method mainly aims at solving the problems that an existing suppression scheme based on a PI controller is insufficient in performance and difficult in parameter adjustment, and a control scheme based on an active disturbance rejection controller is complicated in parameter debugging and difficult in obtaining optimal parameters although the performance is better. The method comprises the following steps: step 1, suppressing a negative sequence current generated by an MMC system when an alternating current side has a fault; step 2, constructing a second-order LADRC model; and step 3, current inner loop control is carried out by using a second-order LADRC controller set by a particle swarm optimization algorithm. According to the method, a traditional PI controller is replaced by the second-order LADRC controller, parameters are set in combination with the particle swarm optimization algorithm, the ride-through capacity of the MMC system under the alternating current side fault is remarkably improved, and better dynamic response and interference immunity are achieved.

The invention discloses a loop resistance measuring method, system and device, and relates to the technical field of electrical measurement. The method comprises the following steps of: performing loop data acquisition at each interface of the disconnecting switch adopting a three-channel wiring mode, injecting excitation current by an excitation source, and acquiring three-channel voltage original signals and initial sampling flow by a differential isolation amplifier to obtain the initial sampling flow; time sequence identification is carried out on the initial sampling flow to complete sample starting and ending point identification, inter-channel time alignment is completed, and a synchronous voltage sample set is output. According to the invention, by constructing a complete data chain covering high-precision synchronous sampling, adaptive signal processing, phase compensation calculation and intelligent statistical diagnosis, the problems of low measurement precision and insufficient anomaly identification capability caused by poor synchronism, phase error and lack of deep analysis in a traditional method are solved; the accuracy and anti-interference performance of loop resistance measurement and the intelligent level of state diagnosis are improved.

The invention belongs to the technical field of water environment detection, and particularly relates to a heavy metal concentration and water body flow velocity synchronous detection method for a dispersed drain outlet, which is used for synchronously detecting the heavy metal cadmium concentration and the water body flow velocity. The core of the method comprises a three-electrode sensing system consisting of a working electrode coated with a tungsten oxide film, a reference electrode and a counter electrode, and is assisted by an electrochemical workstation, a peristaltic pump, a flow cell and a signal processing module. The cadmium concentration is accurately measured through the square wave anodic stripping voltammetry, the flow velocity is synchronously detected through the open circuit potentiometry, dual-function detection is achieved through integration of the square wave anodic stripping voltammetry and the open circuit potentiometry, synchronous in-situ detection of the cadmium concentration and the water body flow velocity is achieved, and errors caused by measurement position differences are effectively eliminated. The result shows that the cadmium concentration and the dissolution peak current are in a linear relationship, and the water flow velocity logarithm and the open-circuit potential are in a linear relationship. The method designed by the invention is suitable for scattered and small sewage draining exit scenes, and effectively solves the problems of time consumption and equipment redundancy of traditional step-by-step detection. In an actual water sample test, the cadmium recovery rate is 80%-120%, the flow velocity measurement RSD is smaller than or equal to 5.0%, high reproducibility, stability and anti-interference performance are achieved, technical support is provided for real-time online evaluation of the total heavy metal emission amount, and the method has remarkable environmental monitoring application potential.

The utility model relates to an anti-interference all-in-one machine which comprises a machine body, a shielding shell is arranged on the outer surface of the machine body, three shielding cases are installed in the shielding shell, and the three shielding cases cover the outer side of a CPU, the outer side of a hard disk and the outer side of a power source respectively. Three through grooves are formed in the surface of the shielding shell, and the tops of the three shielding covers are arranged in the three through grooves respectively. Heat dissipation holes are formed in one side of the upper surface of the shielding cover, a sleeve is installed on the outer surface of the shielding cover, the end of the sleeve penetrates to the outer side of the shielding shell, and a heat dissipation fan is installed in the sleeve. External electromagnetic radiation is shielded through the shielding shell, and then electromagnetic shielding is performed on the CPU, the hard disk and the power supply through the three shielding covers, so that external electromagnetic radiation entering the shielding shell can be reduced, and interference of electromagnetic radiation generated when the CPU, the hard disk and the power supply operate on other surrounding electronic components can be reduced; therefore, the anti-interference performance of the machine body is improved, and stable operation of the machine body is guaranteed.

The invention provides an acoustic-magnetic coupling backflow cable nondestructive testing and long-distance transmission integrated method and system, and relates to the technical field of backflow cable transmission detection, accurate fault identification and positioning are realized by sending acoustic-magnetic dual excitation signals to a backflow cable, collecting responses, extracting multi-source features and then performing fusion model analysis, and the detection accuracy is improved. The problem that a traditional method is low in detection precision is solved. After being coded and modulated, a detection result is stably transmitted to a receiving end through a long-distance transmission link, so that the integration of nondestructive detection and long-distance transmission of the acoustic-magnetic coupling backflow cable is realized, and the defect of instability of long-distance transmission is overcome. And a self-adaptive power amplification and frequency hopping anti-interference mechanism is adopted in the transmission process, so that the anti-interference performance, the stability and the environmental adaptability of signal transmission are improved, and the actual requirements of backflow cable detection and long-distance transmission in a strong electromagnetic interference environment and a complex working condition are met. By introducing a self-adaptive calibration mechanism and comparing with a reference signal, excitation and acquisition parameters are corrected in real time, and the detection precision and the long-term reliability are further improved.

The invention belongs to the technical field of power equipment state monitoring, and discloses a transformer discharge detection method and system with an anti-interference function, and the method comprises the steps: obtaining a multi-mode discharge original signal of a transformer, carrying out the synchronization of a coefficient through a channel, anchoring a synchronous interference signal, extracting initial multi-dimensional features, and carrying out the detection of the multi-mode discharge original signal. Performing weighted average fusion on the initial multi-dimensional features according to a channel synchronization coefficient to obtain an anti-interference feature vector; constructing a feature screening-interference immune lightweight neural network model, inputting anti-interference features, taking a channel synchronization coefficient as an interference immune factor, and outputting a discharge type identification result; and obtaining an evaluation index by combining the peak amplitude of the multi-mode discharge original signal of the transformer after the de-noising preprocessing, and obtaining a discharge risk level based on the evaluation index. According to the invention, accurate identification and risk grade evaluation of transformer discharge are realized, and the problems of poor anti-interference performance and the like are solved.

The embodiment of the invention provides a communication method and an application device, which can be applied to the field of satellite communication, such as NTN. The method comprises: a terminal device determining a first interleaving mode of a plurality of time-frequency units, the plurality of time-frequency units corresponding to a first OCC sequence, the plurality of time-frequency units being used for bearing first data expanded by the first OCC sequence; and the terminal device sends second data on the plurality of time frequency units, wherein the second data is data interleaved by the first data in the first interleaving mode. By adopting the embodiment of the invention, the anti-interference performance of the terminal device for sending the information can be improved, the interference of other terminal information on the network side is reduced, and the system performance and the system capacity can be improved.

Provided in the embodiments of the present application are a communication method and an application apparatus, which can be applied to the field of satellite communication, such as an NTN. In the embodiments of the present application, K, which is less than or equal to the number of spreading units occupied by a transport block, is determined first, wherein K is the number of spreading units occupied by each first time unit among Q spreading units on which the transport block is subjected to OCC spreading on the basis of a first OCC sequence. In this way, using the first time unit as a reference, and on the basis of the first OCC sequence, OCC spreading is performed on first data of the transport block that is to be transmitted on different spreading units. When the number of spreading units occupied by the first time unit is less than the number of spreading units occupied by the transport block, a spreading interval of the same first data on the spreading units can be reduced, thereby facilitating an improvement in the anti-interference performance of data transmission.

This invention relates to the field of monitoring devices, and more particularly to a prefabricated intelligent monitoring device and method for the verticality of steel-concrete columns. The device includes a housing, a base mounted at the rear end of the housing, an assembly mechanism mounted on the back of the base, and a horizontal mechanism inside the housing. Through the assembly mechanism, when a verticality test is required, the housing and laser emitter are attached to the surface of the steel column via an electromagnetic plate inside a magnetic base. A battery then powers the electromagnetic plate, allowing it to be electromagnetically and securely mounted on the outside of the steel column. Two magnetic strips are also installed on both sides of the electromagnetic plate to increase magnetic attraction, enabling flexible mounting of the monitoring device for testing. This further enhances the installation stability of the monitoring equipment, improves the convenience of steel column testing, and, through laser detection, increases resistance to interference from the external environment.

According to the high-speed railway subgrade settlement distributed monitoring method and system, the high-speed railway subgrade settlement distributed monitoring method has the advantages that the technology is mature, the precision is high (millimeter level), layered settlement of different soil layers can be measured, data are visual and reliable, and the precision is extremely high (can reach 0.1 mm level); the optical fiber is a sensor and a transmission medium and can continuously sense deformation of any point along an optical fiber path, the spatial resolution can reach the meter level or even the centimeter level, the anti-interference performance is high, the corrosion resistance and the electromagnetic interference resistance are achieved, the long-term stability is good, and the real distribution is achieved; the method is suitable for long-term monitoring, can realize multi-parameter monitoring (combining with different demodulation technologies and simultaneously monitoring settlement, strain, temperature and the like), and the monitoring system has full-time-domain continuity: 7 * 24-hour uninterrupted monitoring, which is far better than the frequency and full-space distribution of traditional manual inspection.

This invention discloses a system and method for testing the radio frequency interference (RFI) immunity performance of train vehicle equipment. The system includes a test terminal, a mobile terminal, an adjustable bracket, an antenna, and a field strength probe. The mobile terminal houses a power supply and an immunity signal generator. The power supply powers the test terminal and the immunity signal generator, and the immunity signal generator generates and amplifies the RF modulation signal. The test terminal is located on one side of the top of the mobile terminal. This system and method for testing the RFI immunity performance of train vehicle equipment utilizes a mobile terminal connected to the test terminal, antenna, field strength probe, and immunity signal generator to perform RFI immunity testing. The immunity signal generator simulates the RF interference environment, eliminating the need for an anechoic chamber. Testing can be conducted directly within the train carriages after the train assembly is completed and all functions are properly debugged, improving the overall mobility and portability of the testing system.

The present application relates to the field of precision guidance, in particular to an anti-interference method based on space-time progressive learning, an anti-interference device based on space-time progressive learning, an electronic device and a computer readable storage medium. The method comprises: taking a continuous frame of a target to be detected, wherein the continuous frame comprises multiple frames of images continuously on a time axis; generating an initial proposal box; predicting the position of an adjacent proposal box based on the current proposal box position to form a track pipeline; obtaining a classification probability based on the regional feature space-time relationship through a global branch of a double-branch network, and determining a regression box based on global information and local information through a local branch; replacing the proposal box with the regression box with the largest classification probability to update the track pipeline. The present application starts from a coarse-scale proposal box, adopts progressive learning, uses a spatial refinement module to complete detection and cascade tasks, and combines a time sequence expansion module to extract more time sequence information, thereby improving recognition accuracy and having excellent anti-interference performance.

This invention relates to the field of electronic device testing technology, specifically to a high-precision automated testing system for triaxial magnetic sensor chips applied to FPCs. This system requires no adapters, has strong anti-interference capabilities, a high degree of automation, and comprehensive testing coverage. It includes the following modules: a pneumatic pressing structure and safety protection light curtain for automated and safe contact with the FPC under test; a magnetic shield made of high-permeability material to isolate external magnetic fields from interference; a test coil, built into the center of the shield to generate a uniform magnetic field in a vertical direction; a communication and data acquisition module electrically connected to the corresponding test point on the FPC via probes at the bottom of the fixture; and a control and display module for displaying the testing process and results, as well as an interface for connecting to a host computer for log storage.

A transmitting device, a detection device and a terminal are applied to the technical field of detection, and the transmitting device comprises a first transmitting module and a second transmitting module. Wherein the first transmitting module is used for transmitting a first light beam, the polarization state of the first light beam is a mixed polarization state, and the mixed polarization state light beam is low in energy loss and high in energy density in the transmitting process and has good distance measuring capacity. The first transmitting module is used for transmitting the second light beam, the polarization state of the second light beam is linear polarization, the detection device is suitable for scenes needing higher transmissivity or higher reflectivity, and the anti-interference performance of the detection device can be improved. Furthermore, the first light beam and the second light beam are used for detecting different areas of the object space, composite detection combining mixed polarization detection and polarization detection is carried out on the object space, interference of reflection and the reflection effect on detection is reduced while the distance measuring performance of the detection device is not obviously reduced, and the detection device has higher detection precision.

The invention relates to the technical field of integrated circuit design, in particular to a wide-loop broadband and high-frequency PSRR low-voltage linear voltage stabilizing circuit which comprises an error amplifier, two modules with frequency compensation FVF structures and a resistor array. The module of the first frequency compensation FVF structure receives a specific value output by the error amplifier, outputs feedback voltage and is used for increasing the transient response speed of the circuit; and the module of the second frequency compensation FVF structure receives the specific value output by the error amplifier, and outputs the working voltage to the load for improving the load bearing capacity of the circuit. The LDO design of a frequency feedback voltage (FVF) structure is adopted, and the performance of the high-frequency PSRR module is improved by expanding the loop bandwidth and enhancing the high-frequency PSRR module. By adopting the FVF structure, the load bearing capacity of the LDO is remarkably enhanced, and by introducing the high-frequency PSRR lifting circuit, the LDO is endowed with strong anti-interference performance within a specific frequency range.

This invention discloses a communication method, apparatus, and system based on reconfigurable smart surfaces, belonging to the field of wireless communication technology. The communication method based on reconfigurable smart surfaces jointly optimizes the transmitter's current beamforming vector and current RIS reflection parameters based on real-time channel estimation results using a deep deterministic policy gradient algorithm. A joint optimization model of the transmitter's beamforming and RIS parameters is established, transforming the non-convex optimization problem into a Markov decision process, which is efficiently solved using the deep deterministic policy gradient algorithm, thereby improving the transmission capability of the communication. Furthermore, the introduction of reconfigurable smart surface technology, with its design featuring a reflection unit possessing independent amplitude-phase modulation capability, overcomes the fixed amplitude limitation of traditional passive RIS, effectively overcoming dual-fading path loss, and thus improving the anti-interference performance of the communication system in complex electromagnetic environments such as high spectral density and high interference power.

This utility model discloses a limited-position bending type infrared receiver module, including an epoxy resin body, a built-in shielding bracket, a receiving PD, an integrated chip, and bending pins. The built-in shielding bracket includes a fixing part, a connecting part, and a shielding part. The fixing part and the shielding part are connected by the connecting part. The receiving PD and the integrated chip are fixedly installed in the fixing part. The shielding part has a receiving window, and the top of the epoxy resin body has a convex mirror structure. By adopting a built-in shielding bracket, PD receiver, and convex mirror structure, the product achieves advantages such as miniaturization, strong sealing, strong anti-interference, strong receiving signal, and good stability. Integrating the receiving PD and the integrated chip together has the advantages of small size and high sensitivity. By providing a convex mirror structure on the top of the epoxy resin body, the external transmission signal is effectively improved, and the receiving line distance reaches 30m, thus giving the entire product the characteristics of strong anti-interference ability and high receiving signal strength.

The invention discloses a multi-frequency point calibration test method and system for 0-10 Hz ultralow frequency magnetic field immunity. The method comprises the steps of system building, single frequency point reference calibration, test execution and exception handling. When the system is built, the hardware modules are connected according to a specific mode; in the calibration stage, references are established for frequency points of 2Hz, 4Hz, 6Hz and 8Hz; during testing, precise field intensity control and data recording are realized through combination of coarse adjustment and fine adjustment; and verifying the probe position when abnormity occurs. The system comprises an arbitrary function generator, a power amplifier, a radiation ring and a gauss meter, and parameters of each module are adaptive to a frequency band of 0-10Hz. The field intensity larger than or equal to 1000 A / m can be stably generated, the testing precision is improved, the 0-10 Hz frequency band standard testing blank is filled, and the device is suitable for electronic equipment testing in the fields of industrial automation, new energy automobiles and the like.

The utility model provides an anti-interference electronic remote controller, which relates to the technical field of remote controllers and is characterized in that an electronic circuit board is arranged in a first shell, an anti-interference mechanism is arranged on the outer side of the electronic circuit board, the top of the electronic circuit board is connected with an integrated control board, and the integrated control board is fixedly connected with a second shell; the right end of the integrated control board is connected with an indicating lamp; the top of the second shell is connected with the anti-interference mechanism, the left end of the first shell is connected with a battery connecting plate, and the right end of the battery connecting plate is electrically connected with the electronic circuit board. Through the arrangement of the anti-interference mechanism, after the remote controller is assembled, the anti-interference mechanism in the remote controller can perform signal isolation protection on the electronic circuit board, so that the influence of other electromagnetic wave frequencies on the use of the electronic circuit board is avoided, and the anti-interference performance of the remote controller in use is improved; therefore, the electronic circuit board can be used normally when signals of the remote controller are miscellaneous.

The utility model discloses an alternating-current variable-frequency power supply capable of realizing three-phase-to-single-phase full-power output, which comprises a main board, a slow starting module, a three-phase EMI (Electro-Magnetic Interference) filter, an R-phase output isolation transformer, an S-phase output isolation transformer, a T-phase output isolation transformer and a three-to-single interlocking switching contactor, the main board is provided with an output voltage sampling end pin, an output current sampling end pin, an SPP-107, an operation panel removing end pin, a driving signal end pin and a slow start removing end pin, and the main board is connected with the slow start module through the slow start removing end pin. The power supply does not need to additionally purchase single-phase power supply equipment and can be directly switched; compared with a voltage regulator scheme, a variable-frequency power supply is used for supplying power and is isolated from a mains supply power grid, so that the anti-interference performance is improved; an interlocking mechanism is arranged between the single phase and the three phases, so that the single-phase output and the three-phase output are prevented from being mistakenly connected, and the tested equipment is prevented from being damaged.

The embodiment of the invention provides an antenna structure and electronic equipment, the antenna structure comprises a first double-loop antenna unit and a second double-loop antenna unit, the first double-loop antenna unit comprises a first antenna and a second antenna, and the second antenna surrounds the first antenna; the second double-ring antenna unit comprises a third antenna and a fourth antenna, and the fourth antenna surrounds the third antenna; the surface of the first double-ring antenna unit is not in contact with the surface of the second double-ring antenna unit; the first double-loop antenna unit is electrically connected with the second double-loop antenna unit; the antenna structure is electrically connected with an electronic device used for arranging the antenna structure. By using the dual-ring antenna unit, the dual-frequency right-handed circular polarization of the antenna is realized, the signal coverage range is enhanced, and the signal receiving capability is optimized at different frequencies, so that the stability of equipment and the anti-interference effect are improved.

The invention discloses a half-duplex network near-field wireless transmission method which is applied to short-distance wireless transmission and meets the requirement for high anti-interference performance. The method comprises the following steps: a hardware sending part adopts an integrated operational amplifier to amplify a signal and enhance driving of an external antenna; and the hardware receiving part adopts an integrated operational amplifier to attenuate signals from the antenna. The hardware receiving level conversion part adopts level conversion chips such as rs422, lvds, mlvds and the like to be converted into a standard IO port, or adopts a triode and an mos tube to build a level conversion circuit to be converted into the standard IO port. And the antenna part adopts a rectangular antenna. The device can be practically applied to equipment such as rail sliding equipment.

This application discloses a method for dynamically adjusting the analog signal filtering coefficient and a temperature measuring device, relating to the field of industrial control technology. The method updates a continuously changing counter by comparing the sampled value with the current output value in real time, and dynamically adjusts the filtering coefficient based on the comparison result of the absolute difference between the two values ​​and preset first and second thresholds. After limiting, the output is updated based on whether the continuous trend of the counter exceeds a set value. This method fundamentally solves the inherent contradiction of traditional fixed-window filtering in simultaneously suppressing spike interference and rapidly responding to changes in real-world operating conditions. The processor of the temperature measuring device is configured to execute the above method, and combined with the three-wire connection method and matching resistor design of the hardware, it synchronously eliminates measurement errors introduced by long wires, achieving an adaptive balance between measurement anti-interference, accuracy, and system response speed. It is particularly suitable for temperature measurement scenarios with high reliability and high dynamic requirements.

The utility model relates to the technical field of railway in-phase traction power supply, in particular to an in-phase traction network fault current online detection device based on dynamic compensation, which comprises an analog differential sampling circuit, a signal conditioning filter circuit and a threshold comparison output circuit. And a photoelectric isolation output interface, a shielding metal shell and a bipolar auxiliary power supply module are also arranged. The analog differential sampling circuit is connected in parallel to two ends of the direct current bus capacitor, converts voltage fluctuation into analog voltage signals, inputs the analog voltage signals into the threshold comparison output circuit to be compared with reference voltage after clutter and direct current components are filtered out through the signal conditioning filter circuit, and outputs signals to the converter controller fault interruption interface through the photoelectric isolation output interface. The shielding metal shell guarantees the anti-interference performance, and the bipolar auxiliary power supply module provides stable power supply. According to the device, fault current online detection is realized through a hardware circuit, the problem of software algorithm delay is effectively avoided, and the real-time performance and reliability of in-phase traction network fault identification are remarkably improved.

A method, apparatus, device, and readable storage medium for testing the security layer of an electronic control system are disclosed, relating to the field of electronic control technology for new energy vehicles. Specifically, the method includes an electronic control unit (ECU) receiving a test data packet from a HIL simulator via a hardware interface. This data packet includes scenario-based extreme operating condition parameters, encrypted interference signals, encrypted sensor signals corresponding to the hardware to be interacted with, and encrypted abnormal signals. The ECU performs integrity verification and signal threshold judgment on the test data packet to obtain a first result, and generates control commands based on the first result. The ECU encrypts and digitally signs the control commands based on a preset security key to obtain a target control command, which is then sent to the HIL simulator via a communication bus. The HIL simulator decrypts the target control command, timestamps it, and verifies the digital signature to obtain a second result, and executes the target control command based on the second result, thereby achieving security layer testing of the electronic control system. This application can improve the realism and anti-interference capability of security layer testing of electronic control systems.