84results about How to "Reduce the difficulty of implementation" patented technology

The application provides an AM-PM distortion calibration method applied to an UWB transmitter and belongs to the field of UWB communication. The method adds a sampling resistor between a linear voltage stabilizing power supply LDO and a digital power amplifier DPA driving stage of the UWB transmitter using a digital power amplifier, so as to simulate the instantaneous change of the power supply voltage of the DPA driving stage when the UWB pulse is transmitted; an adjustable delay unit is added between a carrier input port LO and the DPA driving stage; the continuous sine wave is transmitted, the phase information under each digital baseband amplitude control word is collected to form original data of the AM-PM distortion of the UWB transmitter, the digital baseband output AM-PM control word is used to control the adjustable delay unit to output the phase which is opposite to the original data and has the same size, so that the phase predistortion of the transmitted UWB pulse is realized, and the AM-PM distortion calibration is completed. The application has the advantages of simple implementation and strong compensation capacity.

A broadband voltage transformer error compensation method is proposed. First, a broadband test platform is constructed using a signal generator, power amplifier, standard voltage transformer, and high-bandwidth data acquisition system. The ratio and phase errors of the transformer at multiple frequency points are acquired through primary-side excitation and secondary-side synchronous acquisition. Based on the slope, first derivative, and second derivative characteristics of the error curve, the entire frequency band is adaptively divided into segments. Within each segment, multiple candidate models are fitted using a polynomial or exponential-linear combination model. The optimal model is selected based on the coefficient of determination, mean absolute error, and root mean square error. Ratio and phase error compensators are constructed based on the fitting functions of each segment, and error compensation is achieved using a feedforward approach. This method can significantly reduce amplitude and phase errors over a wide frequency range, improving the dynamic measurement accuracy of the voltage transformer.

The invention relates to the technical field of solid lasers, and particularly provides a narrow-linewidth tunable dual-wavelength laser output system based on data driving, which comprises a pumping source, a resonant cavity, a data acquisition unit and a data receiving and driving device, a single gain medium, two F-P etalon and an F-P angle regulator are arranged in the resonant cavity, the inclination angles of the two F-P etalon are adjusted through an F-P angle adjuster so as to perform longitudinal mode selection and wavelength tuning on the output laser of the resonant cavity; a neural network screening model is arranged in the data receiving and driving device, the neural network screening model is used for learning the mapping relation between intracavity parameters and output laser optical parameters, and dual-wavelength simultaneous locking and line width prediction are achieved through dual-etalon collaborative mode selection and data driving of the neural network screening model. According to the invention, the complexity of the system is greatly simplified, and dual-wavelength, narrow-linewidth, high-stability, repeatable and automatic laser output regulation and control which cannot be achieved by a traditional architecture are realized functionally.

This application provides a cold start method, apparatus, electronic device, and storage medium for a recommendation system. The method includes: determining a list of historical clicked content corresponding to user tags based on acquired user tracking data and user tags; calculating feature data of the historical clicked content based on the user tracking data; smoothing the feature data to calculate the click-through rate (CTR) data corresponding to the historical clicked content, and determining a first candidate content list corresponding to the user tags based on the CTR data; determining a second candidate content list based on the first candidate content lists corresponding to multiple user tags under the same user; performing Thompson sampling on the CTR data of the candidate content in the second candidate content list to calculate a random number corresponding to the candidate content; and reordering the candidate content in the second candidate content list based on the random number to determine a user recommendation list. This application can provide users with more differentiated recommended content.

Embodiments of the present application provide a terminal device and a flexible circuit board, which are used to detect whether a battery in the terminal device is bulging without increasing the complexity of the structure of the terminal device. The flexible circuit board is integrated with a first detection electrode and a second detection electrode. When the distance between the first detection electrode and the second detection electrode changes, the signal on the first detection electrode also changes. Therefore, by collecting the signal of the first detection electrode, it can be determined whether the distance between the first detection electrode and the second detection electrode changes. The flexible circuit board is placed on one side of the battery, and the bulging of the battery can drive the above distance to change. By collecting the signal of the first detection electrode, the detection of whether the battery is bulging can be realized. Moreover, the first detection electrode and the second detection electrode are realized by using the flexible circuit board in the terminal device, without the need to additionally introduce other structures, and will not affect the assembly gap between the battery and other components and the overall thickness of the terminal device.

The application relates to an active band-pass filter Q value calibration circuit, which comprises an LDO circuit, a calibration signal filter circuit and a Q value calibration detection circuit; wherein the output ends V1 and V2 of the LDO circuit supply power to the calibration signal filter circuit, the output end VREF of the LDO circuit provides a reference voltage for the Q value calibration detection circuit, the output end signals VBP and VBN of the calibration signal filter circuit serve as inputs of the Q value calibration detection circuit, and the output signal VRZ of the Q value calibration detection circuit is outputted <n:0>The control signal is used as a calibration signal to filter circuit. The application can effectively tune the Q value of the filter and improve the consistency of the chip. Compared with the traditional active band-pass filter Q value calibration circuit, the application has the characteristics of small implementation difficulty and high integration.< / n:0>

This utility model provides a silicon wafer feeding and processing system, relating to the technical field of silicon wafer processing equipment. The system includes a loading silicon wafer transfer assembly, a unloading silicon wafer transfer assembly, a turntable processing assembly, and a loading / unloading swing arm assembly. The turntable processing assembly includes a turntable assembly and a processing device for processing raw silicon wafers placed on the turntable assembly into finished silicon wafers. The loading / unloading swing arm assembly is used to transfer the raw silicon wafers from the loading silicon wafer transfer assembly to the turntable assembly, and to transfer the finished silicon wafers from the turntable assembly to the unloading silicon wafer transfer assembly. This silicon wafer feeding and processing system integrates the loading silicon wafer transfer assembly, the unloading silicon wafer transfer assembly, the turntable processing assembly, and the loading / unloading swing arm assembly to sequentially complete the loading of raw silicon wafers, the processing of raw silicon wafers into finished silicon wafers, and the unloading of finished silicon wafers. It features a compact structure, small footprint, and low operating cost.

This invention relates to the field of tunnel engineering, and particularly to a tunnel shotcrete design method, storage medium, and electronic device that considers spatiotemporal effects. The method includes: calculating the final value of vertical deformation pressure and the radius of the plastic zone of the surrounding rock without support based on tunnel foundation parameters and tunnel shotcrete design parameters; calculating the deformation pressure as a function of time using a deformation pressure calculation formula, combining tunnel excavation speed parameters, the radius of the plastic zone of the surrounding rock, and preset shotcrete hardening characteristic parameters; inputting the deformation pressure-time function into a shotcrete load-support structure model, calculating the safety factor of the shotcrete at each time node based on the shotcrete hardening characteristic parameters, and iteratively adjusting the tunnel shotcrete design parameters according to whether the safety factor meets preset requirements, until outputting tunnel shotcrete design parameters that meet the preset requirements. This invention dynamically calculates deformation pressure considering spatiotemporal effects and iteratively adjusts parameters to ensure the load-bearing safety of the shotcrete throughout its entire life cycle and reduces construction risks.

The utility model discloses an exhaust vane type silencer structure of an air-cooled heat pump unit, which is mounted above an exhaust fan component of the air-cooled heat pump unit and comprises an upper silencing insert, a lower plenum chamber and a flow deflector component arranged in the lower plenum chamber. The flow deflector assembly comprises flow deflectors, fixing ribs and fixing columns, the flow deflectors are at least used for adjusting flow field distribution in the silencer, and the fixing ribs are connected with the flow deflectors and the fixing columns. The flow deflector is used for adjusting the flow field of airflow entering the silencer insertion piece part, so that the flow field in the silencer is more uniform, the situation that airflow regeneration noise is increased due to the fact that the local wind speed is too high is avoided, and finally the actual noise reduction performance of the silencer is improved.

The present application relates to the technical field of rail transit equipment state monitoring, and discloses a pantograph parameter identification method fusing frequency dispersion physical coding and supergraph network, comprising: obtaining pantograph head acceleration response under the running state of the pantograph; performing front-end coding on the pantograph head acceleration response to obtain potential beam response state and potential propagation trend state; constructing a tension beam physical coding operator according to the modal dispersion relationship of the contact line tension Euler-Bernoulli beam, and performing frequency domain propagation modulation on the potential beam response state and the potential propagation trend state by using the tension beam physical coding operator to obtain structure constraint time sequence characteristics; and obtaining the structure state parameters of the pantograph based on the structure constraint time sequence characteristics. The present application embeds the dispersion propagation physics prior of the contact line tension beam into the feature extraction process in a hard coding manner, and can realize accurate identification of the structure state parameters of the pantograph from the pantograph head acceleration response which is easy to collect.

The invention relates to the technical field of coal-fired power plant boilers, and provides a boiler instantaneous energy quality accurate regulation and control rapid load changing system and a control method.The system comprises a main steam system and a reheat steam system and further comprises a first bypass steam system, a second bypass steam system and a control unit; an inlet of the first bypass steam system is connected to a water-cooled wall outlet of the main steam system, and an outlet of the first bypass steam system is connected to a platen superheater inlet of the main steam system; an inlet of the second bypass steam system is connected to a low-temperature reheater outlet of the reheat steam system, and an outlet of the second bypass steam system is connected to a high-temperature reheater inlet of the reheat steam system; the control unit is configured to adjust the steam working medium flow of the first bypass steam system and the second bypass steam system according to a load instruction during the unit load increasing period. According to the scheme, the transformation cost is low, the implementation difficulty is small, and a feasible technical path is provided for an active-service unit to achieve rapid load change and energy quality accurate regulation and control standard reaching.

The application discloses a high-parallelism storage-computation integrated polar code decoding method based on coset decoding, and belongs to the technical field of channel coding and decoding. The method comprises the following steps: constructing an error pattern group and a check constraint subgroup; performing coset division on the error pattern group to obtain a set of mutually disjoint cosets; screening a limited number of minimum cosets based on the minimum Hamming weight of the cosets; and performing parallel decoding processing on the paths corresponding to the minimum cosets in the storage-computation integrated architecture. k The number of paths in the traditional multi-bit decoding is reduced from 2 to a preset number L through coset division, and the parallel execution of the likelihood information updating and the path metric calculation is realized in combination with the calculation-type storage array, so that the decoding performance is ensured, the calculation complexity and the hardware resource consumption are significantly reduced, and the decoding throughput and the energy efficiency are improved.

This invention discloses a power regulation method and system for an intelligent traction power supply system; including: calculating real-time transfer power, and calculating compensation current in real time by combining power transfer error and negative sequence current; calculating current tracking value based on current inner loop command value and voltage synchronization signal; designing a feedforward-feedback composite controller to calculate feedforward compensation amount and feedback control amount respectively; calculating the total duty cycle of PWM modulation signal based on feedback control amount and feedforward compensation amount, and driving the railway power regulator to output the actual current value; the control method and system provided by this invention have low engineering implementation cost, are suitable for traction substation RPC application scenarios, and are easy to promote.

The invention discloses a working end, a working condition distinguishing method and system thereof and engineering machinery, and relates to the technical field of engineering machinery. The method is applied to the engineering machinery which drives a mechanical arm to act through an oil cylinder so as to adjust the attitude of a working end, and comprises the following steps: acquiring stroke data of the oil cylinder of the engineering machinery and a working state image of the working end, and determining standard attitude data of the working end corresponding to the stroke data based on the stroke data; and determining actual attitude data of the operation end based on the working state image, and finally determining whether the operation end is replaced based on the relationship between the standard attitude data and the actual attitude data. Therefore, the problems of maintenance resource mismatching, low after-sales service efficiency and even secondary faults caused by the fact that potential risks are not thoroughly solved due to the fact that design and manufacturing defects, illegal modification of clients or improper operation cannot be distinguished by means of the current method when the engineering machinery breaks down are solved, and the service quality of the engineering machinery is improved. And the public praise and the market competitiveness of enterprise products are seriously influenced.

The invention relates to the technical field of medium-high frequency vibration control, and discloses a structure medium-high frequency vibration variable weight adaptive robust compensation type active control method, which comprises the following steps of: respectively inputting error signals into a minimum mean square controller, a robust controller and a weight controller for operation; a weight controller compares the squared error signal with a reconstructed reference signal mean value, and adaptively adjusts the weights of a minimum mean square controller and a robust controller according to the signal mean value; the first output control quantity and the second output control quantity are superposed and then act on a structural vibration control point through an electromagnetic actuator to obtain an output signal, the output signal is superposed with an original reference signal, and a new error signal is formed to serve as an input signal of a next round of control operation. According to the method, a reference signal reconstruction technology is adopted, a robust compensation mechanism is additionally arranged, an adaptive variable weight strategy and a convergence time and error robustness statistical method are configured, and the medium-high frequency vibration control effect of structures such as a new energy automobile electric drive assembly speed reducer shell is effectively improved.

The invention discloses a three-way orthogonal coil receiving and signal merging method and a three-way orthogonal coil receiving and signal merging system for a rotary permanent magnet mechanical antenna, and belongs to the field of magnetic induction communication. The method comprises the following steps: performing analog conditioning and analog-to-digital conversion on received magnetic induction signals in each space direction, performing Hilbert transform on digital signals in each space direction, extracting instantaneous phase information of each channel, and obtaining complex signals in each space direction; and performing amplitude and phase coherence degree estimation on the complex signals in each spatial direction, determining a weight coefficient of each spatial direction based on the coherence degree between the complex signals in each spatial direction, and combining the complex signals in each spatial direction based on the weight coefficient of each spatial direction to obtain a combined signal. The signal amplitude of a receiving end signal is effectively improved, the signal-to-noise ratio is improved, and the direction robustness and the communication reliability of the system in a complex environment are enhanced.

The invention discloses a table look-up type deformation matching and electromagnetic mapping digital twinning system and a table look-up type deformation matching and electromagnetic mapping digital twinning method. The system pre-constructs a multi-physical field simulation database with speed as a main key, stores a deformation three-dimensional model, pressure field data, radar cross section (RCS) data and feature point displacement, and establishes a reduced scale model deformation-speed association list. In the manual mode, the speed is directly input to call corresponding multi-physical field data; in an automatic mode, the displacement of the feature points of the reduced scale entity model is detected in real time through a displacement detection module, the current deformation quantity is calculated, a speed major key is reversely matched by adopting a minimum absolute difference method based on the association list, and then corresponding multi-physical field data is called; and synchronously displaying the deformation three-dimensional model, the pressure field pseudo-color distribution and the RCS map on a visual rendering platform, and realizing digital mapping from entity deformation to a multi-physical field state.

The application discloses a radar deception jamming generation method based on time domain coding metasurface phase coding, and comprises the following steps: setting the code length of an intra-pulse phase coding sequence, setting a plurality of coding modulation phase differences according to the time domain coding metasurface phase modulation capacity, and designing a time domain coding metasurface phase modulation function according to the set code length and the plurality of coding modulation phase differences; coding the plurality of coding modulation phase differences to obtain a coding set, initializing the intra-pulse phase coding sequence according to the coding set to obtain an initial intra-pulse phase coding sequence; setting a jamming position, and optimizing the initial intra-pulse phase coding sequence by using an optimization algorithm to obtain an optimal intra-pulse phase coding sequence; calculating an optimal coding modulation phase difference sequence according to the optimal intra-pulse phase coding sequence, and modulating a radar echo signal according to the time domain coding metasurface phase modulation function corresponding to the optimal coding modulation phase difference sequence to realize the deception jamming of the radar. The application can realize the deception jamming of the radar at any position.

The application discloses a thermal control structure, which comprises a low-precision heater in direct contact with a heating object, a heater substrate fixed to the other side of the low-precision heater, a high-precision heater fixed to the other side of the heater substrate, a temperature control boundary body fixed to the other side of the high-precision heater, and a plurality of temperature testing components fixed to the other side of the temperature control boundary body. The thermal control structure can make the temperature measuring boundary have higher temperature consistency, reduce the requirement for a temperature control algorithm, reduce the difficulty in realizing the constant-temperature boundary, and reduce the number of temperature sensors and the manufacturing cost. The application also discloses a thermal control method, which has the same advantages.

The application provides a piston type electric injection propulsion storage and supply system, which comprises a storage unit and a driving unit; the storage unit is surrounded by a storage cavity, the driving unit has a driving part and a pressing part; the pressing part is arranged in the storage cavity and divides the storage cavity into a first storage area and a second storage area along the axial direction; the shape of the pressing part is similar to one end of the first storage area away from the second storage area, and the pressing part can completely fit the one end of the first storage area away from the second storage area. In the application, the resistance generated by the piston movement is constant during the supply process, so the change rate of the ion liquid area volume is constant when the pressure is constant, and the output flow also remains constant. The shape of the piston top is similar to the one end of the first storage area away from the second storage area, so that the ion liquid filled in the second storage area can be completely discharged from the second storage area.

The application belongs to the technical field of nuclear reactor physics numerical calculation, and discloses a symmetric boundary processing method and system of a neutron transport characteristic line method. A geometry core model is constructed through an MOC program, boundary conditions of the geometry core model are set, the geometry core model is arranged with characteristic lines to obtain characteristic line arrangement information, symmetry of the geometry core model is set, a corresponding additional module is generated, an equivalent complete module of the additional module is generated according to the symmetry based on the additional module, boundary segment angular flux of the equivalent complete module is calculated, and the equivalent complete module is calculated according to the characteristic line arrangement information and based on the boundary segment angular flux of the equivalent complete module and a known source term distribution to obtain the equivalent complete module. The application realizes reduction of the difficulty of characteristic line arrangement of the additional module, and further improves the efficiency of neutron transport calculation.

The utility model provides a breeding system. The breeding system comprises one or more breeding houses formed by containers. A hoisting component is arranged on the container; a door fence is arranged on the side, close to the container door, of the container. A manure collection pool is arranged on a bottom plate of the container, a manure leakage plate with a plurality of manure leakage openings is laid on the manure collection pool, and the manure leakage plate forms a bearing bottom plate of the breeding space; a material pool, a water dispenser and an environment control system are further arranged in the container, and the environment control system is used for adjusting air parameters, humidity parameters, temperature parameters and illumination duration in the container; the container is provided with a feeding port, a water way connector and a defecation connector so that the container can be directly externally connected with a corresponding pipeline. The culture system can be quickly deployed, the construction time is remarkably shortened, so that a user can quickly carry out culture, and the culture system can be quickly disassembled, so that the user can quickly reuse the land; the scale can be simply and conveniently adjusted to meet the breeding requirements, and the implementation difficulty and the cost input are reduced; safe breeding and intelligent management can be achieved, and the disease risk is remarkably reduced.

The invention discloses a high-reliability complex coefficient repetitive control grid-connected inverter control system and method suitable for a power supply protection scene, and the method comprises the steps: building an LCL type grid-connected inverter mathematical model under an alpha-beta static coordinate system for a three-phase grid-connected inverter, and saving Park transformation and decoupling calculation under a dq coordinate system; a complex coefficient filter H (s) and a complex coefficient repetitive controller are designed to form a double-input double-output control structure, and a complex coefficient imaginary part omega m is set to be equal to a fundamental frequency omega 0, so that the gain of the controller at the fundamental frequency is infinite, and complete tracking of periodic signals is realized; and the dynamic response capability of the system is improved by combining an output feedback control law. According to the method, the grid-side voltage imbalance and harmonic pollution can be effectively suppressed, the grid-connected current THD can be remarkably reduced, and the method has good dynamic control performance and robustness, is suitable for a grid-connected power generation system of new energy such as solar energy and wind energy, and plays an important supporting role in improving the power supply reliability and supply guarantee capability of a power system under the new energy access background.

This invention discloses a SKINNY cryptographic security assessment method based on guess-based determination and random differential faults, relating to the fields of cryptanalysis and information security technology. It involves injecting random word faults into the penultimate round of the MC operation in the SKINNY lightweight cryptographic algorithm's encryption process. The differential information between the correct ciphertext and the faulty ciphertext is analyzed to determine the differential activity pattern after fault propagation. A key selection strategy based on guess-based determination is used to efficiently select round keys. Based on the differential equation system, each round key byte is recovered, and then multiple round keys are recovered in reverse order. Finally, the complete master key is reconstructed using SKINNY's key arrangement algorithm. This invention employs the aforementioned SKINNY cryptographic security assessment method based on guess-based determination and random differential faults, significantly reducing the number of fault injections required and avoiding excessively complex round processing, thus demonstrating significant advantages in assessment efficiency and accuracy.

The invention discloses a QAM wireless transmission oriented NRZ-TI-DACs system and a data processing method thereof, and belongs to the field of ultra-wideband signal generation, and the system comprises a digital signal processor, a phase shift clock, two paths of high-speed DACs, an auxiliary DAC and a superposition output circuit. The method comprises the following steps that: a high-frequency digital input sequence generates two paths of two-frequency-division digital sequences and one path of three-frequency-division compensation digital sequence which are subjected to compensation processing through an improved differential decomposition algorithm of a digital signal processor; the two paths of two-way frequency division digital sequences are respectively sent to two paths of high-speed DACs, and the compensation sequences are sent to an auxiliary DAC; two paths of same-frequency out-phase clocks are used for driving the corresponding DACs respectively; finally, the analog signals output by the three paths of DACs are superposed, and ultra-wideband analog signals are synthesized and output. Through cooperation of an algorithm and hardware, DAC output peak values are effectively limited, system power consumption is reduced, waveform stability is enhanced, lossless data conversion is realized, and low bit error rate and symbol error rate are ensured.

The application discloses a steam turbine moving blade root weight-reducing structure, a steam turbine moving blade and a manufacturing method thereof. The steam turbine moving blade root weight-reducing structure comprises a fir-type blade root and a blade root intermediate body connecting a blade body and the fir-type blade root, and a weight-reducing groove is arranged on the inner arc side of the blade root intermediate body. The opening area of the weight-reducing groove accounts for 60%-40% of the area of the inner arc side without the weight-reducing groove. After the assembly of adjacent blades is completed, the contact area of the inner arc side of the blade root intermediate body accounts for 40%-60% of the contact area of the inner arc side of the blade root intermediate body without the weight-reducing groove. The application has the advantages that the average stress level of the blade root area can be effectively reduced, the manufacturing cost of the blade is reduced, the processing difficulty of the blade is not increased, the blade root weight can be reduced, the strength and rigidity of the blade root can be effectively ensured, and the like.

The invention discloses an engineering innovation practical ability cultivation method and system based on a domestic EDA platform and AI-PBL, and belongs to the field of engineering education and intelligent teaching. A domestic EDA tool is taken as an engineering practice carrier, real engineering problems and subject competition tasks are taken as driving, and a stepped progressive project system driven by an ability matrix is constructed, so that the engineering innovation practical ability is cultivated. And systematic fusion of professional knowledge learning, engineering practice training and innovative design capability cultivation is realized. In the implementation process, an artificial intelligence technology is introduced to carry out intelligent support, design assistance, debugging analysis and engineering practice behavior data processing on the learning process, and the engineering practice ability, team cooperation ability and innovative design ability of students are comprehensively evaluated based on a multi-dimensional ability evaluation index system. According to the method, the problems of course content splitting, discontinuous ability cultivation chain and single evaluation mode in existing EDA practical teaching are solved, and the engineering practice task implementation efficiency and ability evaluation consistency are improved.

The application provides a copper paste metallization interconnection electrode and a preparation method thereof and a photovoltaic system, and belongs to the technical field of photovoltaic technology. The method comprises the following steps: sequentially arranging a copper paste and a tin paste on a target welding area on the surface of a cell; solidifying under the protection of an inert gas to obtain a first IMC layer; performing welding treatment to obtain a second IMC layer on the surface of the first IMC layer, and the copper paste metallization interconnection electrode is obtained; wherein the first IMC layer comprises Cu6Sn5; and the second IMC layer comprises Cu6Sn5 and Cu3Sn. The preparation method provided by the application has a relatively simple implementation process, low process control scheme implementation difficulty and low cost. The investment cost can be greatly reduced, similar process effects can be achieved, and industrial production can be met.

The invention provides a consumption voucher identification-based parking fee deduction method and device, and the method comprises the steps: obtaining image information corresponding to a to-be-verified consumption voucher carrier, carrying out the feature extraction of the image information, obtaining the data information in a consumption voucher, carrying out the matching of the data information with a preference rule library, and obtaining a verification result. And determining a corresponding parking fee reduction and remission scheme, and executing automatic reduction and remission operation of the parking fee according to the parking fee reduction and remission scheme. According to the invention, automatic verification of the authenticity of the consumption voucher and accurate issuing of the parking discount can be realized, and the use experience of consumers is improved.

The application discloses a tool wear monitoring device with a self-cleaning function and belongs to the technical field of machine tool tool state monitoring. The device comprises a chassis, an X-direction displacement assembly, a Y-direction displacement assembly, a Z-direction displacement assembly, an angle adjusting assembly, a clamping piece, a self-cleaning protection assembly, a cleaning medium supply box and a positioning assembly. The clamping piece is installed on the outer wall of a tool shank through a split half structure, a sensor module is embedded in the clamping piece, and a sensing probe penetrates out to the outer surface of the clamping piece. The self-cleaning protection assembly comprises a protective cover body, a turnover cover plate, a micro drive motor and a wiping piece, and the wiping piece wipes the surface of the sensing probe during the opening and closing of the turnover cover plate. The cleaning medium supply box sprays medium to the machining area through a conveying pipe, thereby reducing the splashing of pollutants in the direction of the sensing probe from the source, and the two components cooperatively form a cleaning chain of "source control-end removal", thereby realizing the long-term stability and accuracy of monitoring data.