334 results about "Common mode noise" patented technology

The invention discloses a miniature piezoelectric driving type detection contact integrated laser module and a contact type calibration method, particularly relates to the technical field of precision measurement, is used for solving the problem of dynamic time-varying interference of high-voltage driving pulses on micro-force signals, and is an interference coupling path synchronous acquisition and dynamic resolving technology based on a distributed electromagnetic probe. Online identification of transient interference energy distribution characteristics is realized; a multi-dimensional parameter fusion mechanism of an interference-response dynamic model quantifies cross-domain characteristics of interference energy, system response and signal noise into a comprehensive suppression coefficient, and reverse compensation waveform injection and adaptive filter dynamic adjustment are performed, so that full life cycle offset of common-mode noise is realized, and damage of residual interference to closed-loop control is avoided; through cross-domain collaborative analysis of laser-mechanical data, a self-healing iteration mechanism of contact type calibration parameters is established, progressive pollution of dynamic interference to a calibration reference is eradicated, and long-term consistency of detection precision under complex working conditions is ensured.

The invention belongs to the technical field of wind power generation equipment state monitoring and intelligent fault diagnosis, and discloses a wind turbine generator blade acoustic fault detection method based on transfer learning, and the method comprises the steps: building a standardized sample through acoustic signal simulation and multi-dimensional data enhancement, and extracting weak fault features through an STFT-Mel frequency spectrum; a dual-scale time-frequency attention module is introduced into the lightweight MobileNetV3, so that the focusing and recognition capability on early crack features is improved; by combining transfer learning with MMD domain difference and entropy minimization regularization, efficient alignment of a simulation domain and actually-measured wind field data is achieved, and the generalization performance of the model under the small sample condition is enhanced; a transverse difference spectrogram and longitudinal historical baseline self-evolution double-flow feature fusion mechanism is adopted, common-mode noise is suppressed, and single-blade positioning, progressive degradation early warning and synchronous aging recognition are achieved. The method is small in parameter quantity, low in calculation overhead and suitable for high-precision and low-cost intelligent detection of early damage of the wind turbine generator blades.

The invention relates to the technical field of gas detection, in particular to a dual-wavelength-based adaptive methane detection method and system, and the method comprises the following steps: collecting environmental interference characteristics of a to-be-detected gas environment in real time; synchronously emitting a first laser beam and a second laser beam to a to-be-detected gas environment according to the tunable laser source; receiving optical signals of the first laser beam and the second laser beam and converting the optical signals into electric signals; calculating a light intensity difference value of the first laser beam and the second laser beam based on the electric signal to generate a differential absorption signal; performing optical differential compensation on the differential absorption signal, outputting a methane concentration value, and performing environmental drift compensation on the methane concentration value based on environmental interference characteristics; and performing real-time threshold value judgment on the methane concentration value, and if the methane concentration value exceeds a preset threshold value, triggering a local early warning signal. According to the invention, the problem that the detection precision is reduced due to the fact that methane absorption signal common-mode noise and absorption coefficient drift cannot be synchronously inhibited due to dust concentration and temperature and humidity interference in a dynamic complex environment under a mine is effectively solved.

The invention discloses a linkage differential measurement system and method suitable for micro thrust calibration. The system comprises a linkage differential measurement rack, a liquid metal radio frequency coaxial cable connector arranged on the rack, and a mass center precise regulation and control device arranged on the rack. The linkage differential measurement system provides micro-Newton-level micro thrust except environment common-mode noise; the method comprises the following steps: a torsional pendulum inclination angle control module controls a torsional pendulum inclination angle # imgabs0 #; the centroid position deviation calculation module is used for calculating centroid position deviation; judging whether the offset s of the current centroid position is less than 10 [mu] m or not; the mass center position adjusting module is used for adjusting the mass center position; the gravitational wave micro-thrust calibration torsional pendulum solves the problems that the gravitational wave thruster needs to calibrate thrust noise besides calibrating thrust, high rigidity of a coaxial cable can generate interference on motion of the gravitational wave micro-thrust calibration torsional pendulum, and the gravitational wave micro-thrust calibration torsional pendulum has extremely high requirements on sensing precision of mass center regulation and control.

The invention provides a preparation method of an HDMI (High Definition Multimedia Interface) high-performance common-mode suppressor made of a nanocrystalline material, relates to the technical field of electronic component preparation, and aims to meet the harsh requirement of HDMI high-frequency high-speed signals on common-mode noise suppression, the method comprises the following steps: constructing a multi-layer heterogeneous magnetic film with a gradient interface on a microstructured substrate by utilizing multi-target magnetron sputtering; a selective energy field assisted annealing technology is adopted to realize precise nanocrystallization and magnetic anisotropy regulation and control of the magnetic film; and a high-precision three-dimensional coil structure is integrated by combining a micromachining process. The prepared common-mode suppressor is small in size and high in integration level, shows excellent common-mode suppression efficiency, wide working bandwidth and excellent signal integrity in a high-frequency band, has high reliability, and is suitable for a new generation of HDMI (High-Definition Multimedia Interface).

The invention discloses a pipeline leakage monitor based on optical fiber interference and a monitoring method thereof, and belongs to the technical field of pipe network leakage monitoring. According to the invention, through the cooperation of the differential deformation of the outer cylinder and the inner cylinder and the air cavity, the two paths of sensing optical fibers are driven to generate reverse and equal-length length strain, and the improvement of the sensitivity of pipeline micro leakage sound pressure signal-optical phase signal conversion and the suppression of environmental common-mode noise are realized; a sound pressure signal generated in the leakage process of a pipeline is converted into phase change of light through a balanced optical fiber interferometer, a leakage signal is demodulated through a phase detection technology, and high-precision pickup of the tiny leakage sound pressure signal of the pipeline is achieved; the sound velocity is calibrated in real time through the temperature sensor and the sound velocity compensation module, and microsecond-level wireless signal time service is combined, so that the technical effects of large positioning error and difficulty in multi-device synchronous sampling caused by temperature drift of the sound velocity along with a transmission medium are solved.

The invention discloses an active pen and touch screen interaction system resistant to common-mode interference and a signal demodulation method. The system comprises a signal receiving terminal and a signal transmitting terminal. The signal transmitting terminal modulates data to be transmitted by adopting a differential binary phase shift keying modulation method, and transmits a generated modulation signal to the signal receiving terminal; the analog front-end receiving module is coupled with the signal transmitting terminal, receives the modulation signal and outputs a digital square wave signal after fidelity extraction processing; and the digital demodulation processing module performs differential coherent digital demodulation on the digital square wave signal based on the prior characteristics of the modulation signal, inhibits residual noise and recovers data to be sent. The analog front end focuses strong common-mode noise suppression and analog filtering, the digital demodulation algorithm performs secondary digital purification by using signal time sequence characteristics, and the two constructs an efficient anti-interference pipeline. Meanwhile, the regular square wave signals can be directly processed through differential coherent demodulation, and the requirements for performance and power consumption of a rear-end processor are lowered.

The invention discloses a multi-level pulse compensation type active EMI (Electro-Magnetic Interference) filter suitable for a multi-noise source switching power supply and a control method of the multi-level pulse compensation type active EMI filter. The invention provides a multi-level pulse compensation scheme based on switch behavior modeling, aiming at the problem of common-mode noise of adjacent rising edges and falling edges generated by a high-frequency switch in a multi-noise-source switching power supply. The time sequence delay and the edge slope of the compensation signal are calculated by analyzing the dv / dt characteristics in the switching-on and switching-off processes of the switching device, and accurate matching and offset with a noise source in phase and amplitude are achieved. Compensation control logic is realized by sharing a main control chip with a power circuit, and an additional controller and a high-precision sampling system are not needed; the self-adaptive tracking of the compensation amplitude is realized through the voltage following circuit; a multi-level compensation signal is output through the totem-pole circuit and injected into a common-mode path, and effective suppression of electromagnetic interference is achieved. The converter has the advantages of small size, low cost, simplicity and convenience in installation, high stability and the like, and is suitable for various multi-noise-source power electronic systems including a dual-active bridge converter, a phase-shifted full-bridge converter and an interleaving Buck converter.

The invention relates to the technical field of amplifiers, and discloses an analog-to-digital converter combination instrument amplifier which comprises a first-stage amplifier, the first-stage amplifier is in signal connection with a second-stage amplifier, the second-stage amplifier is in signal connection with a front-end low-pass filter (LPF), the front-end low-pass filter (LPF) is in signal connection with an analog-to-digital converter (ADC), and the analog-to-digital converter (ADC) is in signal connection with the analog-to-digital converter. And an unbalanced input-to-balanced differential circuit output module is arranged between the second-stage amplifier signal and a front-end low-pass filter (LPF). From the perspective of signal processing and conversion, a precise signal transition bridge is constructed by adding an unbalanced input-to-balanced differential circuit output module, unbalanced signals output by a second-stage amplifier are converted into double-end balanced differential signals, common-mode noise interference is effectively resisted through a differential transmission mode, the signal purity is guaranteed, and the signal quality is improved. The front-end low-pass filter and the analog-to-digital converter are adaptive to differential signals, so that the signal transmission is stable and anti-interference, and the analog-to-digital conversion is more accurate.

An active compensation device including a first element group including an integrated sensing / compensation unit configured to generate a sensing signal corresponding to at least one of common-mode noise and differential-mode noise on at least two high-current paths, and a second element group including a compensation control unit including a negative impedance converter and configured to generate a compensation signal corresponding to the sensing signal and provide the compensation signal to the integrated sensing / compensation unit. The compensation control unit further including a stabilization unit configured to prevent oscillation caused by the sensed noise. The first element group and the second element group are mounted on a single substrate.

An integrated circuit device includes a multiplexor and multiple receivers for high-speed data communication interfaces. The multiplexor includes multiple signal inputs, a selector input, and a signal output. Each receiver includes a differential data signal input including a positive signal input and a negative signal input, a first termination resistor to terminate the positive signal input to a reference voltage node, a second termination resistor to terminate the negative signal input to the reference voltage node, and a noise measurement node to detect common mode noise at the reference voltage node, the noise measurement node coupled to an associated one of the signal inputs.

The invention relates to the technical field of aero-engine state monitoring, and discloses an aero-engine blade tip gap measuring probe and system based on an eddy current method.The aero-engine blade tip gap measuring probe adopts a coplanar Archimedes spiral double-coil array, and in the measuring process, the blade tip gap can be measured by applying anti-phase excitation; the common-mode noise suppression in the blade tip clearance measurement process is realized by combining a differential amplification circuit; signal extraction and temperature drift compensation are realized through a phase-locked amplification technology and an impedance-resistance orthogonal decoupling architecture, and finally micron-order gap analysis is realized. The aero-engine blade tip clearance measurement system provided by the invention can still keep excellent reliability under extreme working conditions of high temperature, high rotating speed and the like of a turbine, and meanwhile, the measurement precision of the blade tip clearance can be remarkably improved.

The present invention relates to the field of power integrated circuits, and disclosed is a level shift circuit for improving the anti-noise capability of a high-voltage gate driver chip. When a high-voltage domain power rail rises rapidly, a feedback control module detects that common-mode noise is present in a signal transmission path, and outputs a feedback signal to control the load impedance of a level shift branch to be reduced, thereby reducing the amplitude and time of impact of the noise, and filtering out residual noise by a rear-stage filter circuit can ensure that the noise would not cause logic function disorder of a high-voltage domain circuit. Moreover, the time of impact of the noise can be greatly shortened due to the action of a dynamic load structure and the feedback control module, and the noise can be thoroughly filtered out by the rear-stage filter circuit. Therefore, the allowed minimum pulse width of an input signal can be effectively reduced, and a signal transmission delay can be greatly reduced.

A noise reduction circuit includes: noise canceler circuitry configured to inject a compensation current into a power line and ground to reduce a common mode noise current that flows through the power line and the ground into a commercial power supply from a power converter with a switching element connected to the commercial power supply; and overcurrent inhibitor circuitry provided on a compensation current path through which the compensation current flows, the overcurrent inhibitor circuitry being configured to inhibit application of an overcurrent to the noise canceler circuitry.

The invention relates to a successive approximation register type analog-to-digital conversion system for a brain-computer interface, which is characterized in that a P-end input and an N-end input are respectively connected with two bootstrap sampling switch modules to form a differential signal acquisition channel, and the two bootstrap sampling switch modules are symmetrically designed to suppress common-mode noise; the two bootstrap sampling switch modules are respectively connected to the two segmented CDAC array modules, the segmented CDAC array modules are divided into a high-segment capacitor bank and a low-segment capacitor bank, and the high-segment capacitor bank and the low-segment capacitor bank are connected through a bridging capacitor; the output end of the segmented CDAC array module is connected to the differential input end of the dynamic comparator module, and a comparison result is output to the SAR logic module; the SAR logic module is based on event-driven dynamic logic control, outputs 12-bit digital codes, feeds back control signals to the segmented CDAC array module at the same time, and adjusts a capacitor switching strategy. Compared with the prior art, the invention has the advantages of high precision, low energy consumption, miniaturization and the like.

The invention provides an epitaxial growth control method and device, computer equipment and a storage medium. The epitaxial growth control method comprises the following steps: irradiating a wafer to be measured and the surface of a reference irradiation surface by adopting a super-continuum spectrum laser light source to obtain a reflected light signal; synchronously scanning and filtering the reflected light signal to output two paths of narrow-band light; the two paths of narrow-band light are converted into electric signals and then differential operation is carried out, and the reflectivity of the wafer to be measured is calculated according to a differential result; and determining growth parameters of the epitaxial layer based on the reflectivity, and adjusting process parameters of the reaction cavity according to the growth parameters so as to control epitaxial growth of the wafer to be tested. According to the super-continuum spectrum laser light source, multiple characteristic wavelengths can be scanned in one process step, synchronous monitoring of multiple growth parameters is achieved, and the monitoring requirement of a complex epitaxial structure is met; in addition, common-mode noise in the measurement process is eliminated in real time through the double-beam differential measurement technology, the signal-to-noise ratio is greatly increased, the measurement precision is improved, and accurate control over epitaxial growth is achieved.

A common mode noise filter (1) according to an embodiment comprises: a first conductor part (3); a second conductor part (4); a first barrier layer (5) electrically insulated from the first conductor part (3); and a second barrier layer (6) electrically insulated from the second conductor part (4). The first conductor part (3) has a first spiral conductor (31) and a first lead-out conductor (32). The second conductor part (4) has a second spiral conductor (41) and a second lead-out conductor (42). The first barrier layer (5) is provided at a position at which the first lead-out conductor (32) and the outermost periphery (315) of the first spiral conductor (31) overlap when viewed in the vertical direction. The second barrier layer (6) is provided at a position at which the second lead-out conductor (42) and the outermost periphery (415) of the second spiral conductor (41) overlap when viewed in the vertical direction.

The invention provides an anti-interference pressure sensor signal conditioning circuit based on a differential amplification structure, and the circuit comprises a differential input module which is used for receiving a differential signal outputted by a pressure sensor, and carrying out the amplification and filtering of the outputted differential signal, and obtaining a first differential signal; the common-mode suppression module is electrically connected with the differential input module and is used for suppressing a common-mode signal in the first differential signal to obtain a second differential signal; the programmable gain amplification module is electrically connected with the common-mode suppression module and is used for performing programmable gain amplification on the second differential signal to obtain a third differential signal; the low-pass filtering module is electrically connected with the programmable gain amplification module and is used for filtering high-frequency noise in the third differential signal to obtain a fourth differential signal; and the output buffer module is electrically connected with the low-pass filtering module and is used for converting the fourth differential signal into a single-ended signal and outputting the single-ended signal. According to the invention, external electromagnetic interference and common-mode noise can be effectively suppressed, and the stability and accuracy of signal transmission are improved.

The invention discloses a metal wire doubling and breaking detection device and a control method thereof, and the detection device is characterized in that metal wires to be detected are wound on the side wall of a reel assembly in the circumferential direction of the reel assembly, the adjacent metal wires are spaced by a first preset distance, and the reel assembly and an eddy current sensor assembly are electrically connected with a control assembly; the eddy current sensor assembly is arranged at the corresponding position of the side wall of the reel assembly, and the control assembly controls the eddy current sensor assembly to reciprocate in the axial direction of the reel assembly. When the eddy current sensor assembly moves in the axial direction of the reel assembly, voltage detection signals of the two adjacent detection positions are obtained and subjected to differential operation, voltage difference value signals are obtained, and if the voltage difference value signals deviate from the preset voltage value range, it is judged that the metal wires wound around the reel assembly are doubled or broken. By constructing a high-precision defect recognition mechanism, common-mode noise such as reel rotation vibration and environmental electromagnetic interference is effectively filtered based on spatial position differential operation, and the defect recognition accuracy is greatly improved.

The invention provides a vehicle-gauge-level dynamic equalization SerDes system and a working method, and belongs to the technical field of high-speed serial communication, and the method is characterized in that the system comprises an environment feedback module which collects temperature, cable impedance and common-mode noise data in real time; the dynamic equalizer is used for adjusting parameters of the pre-emphasis, the continuous time linear equalizer and the decision feedback equalizer based on the data acquired by the environment feedback module; the link health monitoring unit is used for counting the bit error rate through a hardware counter and triggering a self-repairing process; and the repair controller is used for executing a self-repair process which comprises redundant channel switching, transmission rate degradation and link retraining operation. According to the invention, the hardware-level environment adaptive equalization and millisecond-level self-healing capability of the SerDes link can be realized, and meanwhile, the redundancy design cost is reduced.

The invention relates to the technical field of optical fiber sensing and signal processing, and discloses an optical fiber positioning and common-mode noise suppression integrated device based on time-frequency joint coding, which comprises a time-frequency coding modulation module, a common-mode noise suppression module is mounted at the bottom of the time-frequency coding modulation module, and a common-mode noise suppression module is mounted at the bottom of the common-mode noise suppression module. An optical fiber sensing link is installed in the common-mode noise suppression module. According to the optical fiber positioning and common-mode noise suppression integrated device based on time-frequency joint coding, the time-frequency coding modulation module deeply fuses frequency hopping spread spectrum coding and a heterodyne detection technology, and the encoder encodes a positioning signal and a noise suppression signal into a composite waveform, so that the probability of being interfered is reduced, and the positioning precision is improved. Positioning signal transmission and common-mode noise suppression can be achieved through the same optical fiber, the common-mode noise suppression module can dynamically adjust the noise suppression ratio and the accurate positioning precision according to the environment, a learning-adjustment-optimization closed loop is achieved, and the reliability of the system in complex environments such as traffic, outdoor and mine environments is improved.

The invention relates to the technical field of electric power facility monitoring, and discloses an electric power line detection system based on a three-dimensional inertial gyroscope and deep learning, which comprises a data acquisition module, a segmented preprocessing module, a trajectory resolving module, a trajectory correction module, a deviation analysis module and a risk early warning module. According to the application, the electromagnetic shielding and common-mode noise suppression technology is adopted to overcome high-voltage electromagnetic field interference, and the data acquisition quality is ensured; precise adaptation of different line features is realized through segmented adaptive preprocessing; inertial navigation error accumulation is effectively inhibited by utilizing topological constraint and multi-source data fusion; the problem of deviation identification under the small sample condition is solved by combining an attention mechanism and transfer learning; and finally, intelligent risk assessment and early warning are realized through deep reinforcement learning, so that whole-process intelligent processing from original data to risk assessment is realized, and the precision and efficiency of power line detection are improved.

A power converter can include a switching bridge having two input terminals that receive an input voltage and a switch node coupled to a primary winding of a transformer; at least one rectifier device coupled between a secondary winding of the transformer and an output of the power converter; and a common mode noise compensation capacitor. A first terminal of the common mode noise compensation capacitor can be coupled to a connection between the secondary winding of the transformer and the at least one rectifier device, and a second terminal of the common mode noise compensation capacitor can be coupled to one of the two input terminals. The common mode noise compensation capacitor can be coupled to an energized or a grounded input terminal. The common mode noise compensation capacitance can be selected to be equal to the turns ratio of the transformer times the parasitic capacitance of the transformer.

The invention provides a current sharing low-ripple voltage source based on equivalent resistance negative feedback, which is characterized by comprising a common-mode filtering module, a direct-current converter module, a direct-current filtering module, a reference current module, a linear voltage regulator module based on equivalent resistance negative feedback regulation and the like. High-ripple direct-current voltage from 24V to 36V is input, and common-mode noise is suppressed through the common-mode filtering module; the direct-current converter module realizes primary voltage conversion and outputs 9V direct-current voltage; the direct current filtering module filters ripples in 9V direct current voltage; a linear voltage regulator in the reference current module provides reference; the linear voltage stabilizer module based on equivalent resistance negative feedback regulation reduces 9V direct current voltage to 5V direct current to be output, power supply current is improved through multi-path parallel connection and expansion, high ripple rejection ratio is achieved, and power output power is increased. The power density is high, output currents of the linear voltage stabilizer modules connected in parallel are balanced, the output power is large, the power supply rejection ratio is high, and the power supply is suitable for the field of precise instrument equipment power supply.

A dual tank LC-tuned Voltage Controller Oscillator (LC VCO) comprising a differential pair of cross-coupled transistors (M1, M2, M3, M4) produces a negative impedance by keeping a lower drain swing and a sufficient gate swing. The gate terminals of first and second transistors M1, M2 and third and fourth transistors M3, M4 are separated through a series of two inductors L1, L2 and two cross-coupled capacitors are connected between the drain and gate terminals of cross-coupled transistors to attenuate the output swing. The VCO tank further comprises two R2R Digital to Analog Converters (DAC) to bias both NMOS and PMOS cross-coupled pairs of transistors, to produce a common mode noise.

The utility model discloses a common-mode rejection circuit of a bidirectional full-bridge CLLC resonant converter and electronic equipment, and belongs to the technical field of power electronics. The common-mode rejection circuit comprises an integrated transformer, a primary side full-bridge switch unit, a secondary side full-bridge switch unit, a first resonant capacitor and a second resonant capacitor, the integrated transformer comprises a magnetic core group, a first resonant inductor, a second resonant inductor, a primary winding, a secondary winding, a third resonant inductor and a fourth resonant inductor; the first resonant inductor, the second resonant inductor and the primary winding are wound on the magnetic core group to form a first common-mode suppression path to suppress common-mode noise of the primary full-bridge switch unit; and the third resonant inductor, the fourth resonant inductor and the secondary winding are wound on the magnetic core group to form a second common-mode suppression path to suppress the common-mode noise of the secondary full-bridge switch unit. According to the invention, the switching noise of the CLLC can be suppressed under the condition that the size of the filter is not increased.

The invention relates to the field of quantum sensing, and provides an SERF atom magnetometer based on pi pulse pumping detection and a magnetic field detection method. According to the method, 770nm pumping light and 795nm detection light are modulated into an alternating pulse sequence through an acousto-optic modulator, optical frequency shift interference is avoided by adopting a time division multiplexing technology, and pumping pulses are configured to have a pi rotation effect so as to enhance atomic spin polarization. The device comprises an alkali metal gas chamber with multiple layers of magnetic shielding, a graphene heat conduction non-magnetic heating system based on infrared laser, a time division control light path module and a synchronous signal processing unit. Electric heating is replaced by laser heating to eliminate magnetic noise, a pulse interval tau adjustable mechanism is utilized to balance sensitivity and measuring range, and common-mode noise is suppressed in combination with differential photoelectric detection and phase-locked amplification technologies. The alternating current stark effect caused by continuous illumination and magnetic field interference of traditional heating are overcome, the magnetic field measurement precision, the system stability and the signal-to-noise ratio are improved, and a high-precision weak magnetic field detection scheme is provided for biomedical detection and quantum navigation.

A resonant converter is provided. The resonant converter includes a primary circuit, an integrated transformer, a secondary circuit, a local ground, a first Y capacitor and a second Y capacitor. The primary circuit has a first positive line and a first negative line. The integrated transformer is electrically connected to the primary circuit. The secondary circuit is electrically connected to the integrated transformer and has a second positive line and a second negative line. The first Y capacitor is coupled between the local ground and the first positive line or the first negative line of the primary circuit. The second Y capacitor is coupled between the local ground and the second positive line or the second negative line of the secondary circuit. The first Y capacitor, the second Y capacitor and the local ground are configured to circulate common mode noise currents between the primary circuit and the secondary circuit.

Disclosed in the present invention is a filter circuit. A first PCB layer consists of a power line, a power interface, a second filter capacitor, and a first filter capacitor; the power line comprises a power supply network and a GND network; the second PCB layer is provided with a conductor plane; the power interface is connected to the GND network and is further connected to the conductor plane; the GND network, the second filter capacitor, and the conductor plane are sequentially connected; the power supply network, the first filter capacitor, and the conductor plane are sequentially connected. The circuit design of the circuit structure and the overall layout design idea in the present invention have a good suppression effect on common-mode noise, differential mode noise, radiation noise and conduction noise.

The invention provides a photoacoustic gas measurement method and a photoacoustic gas measurement system based on a series sensibilization technology, and relates to the technical field of optical gas sensing. The first-stage light absorption enhancement structure is used for carrying out maximum photoacoustic conversion on target gas to generate an initial photoacoustic pressure signal, the second-stage acoustic resonance structure is introduced to carry out resonance amplification on sound waves with specific frequency, a tandem cascade sensibilization framework of light absorption enhancement and acoustic resonance amplification is constructed, and through mutual verification analysis, the sensitivity of the target gas is improved. Calculating coherence outside preset noise analysis frequency band data, identifying and inhibiting common-mode noise interference caused by environment vibration and the like, generating feedback control parameters while calculating final gas concentration, adaptively adjusting intensity modulation frequency and wavelength modulation depth, and realizing high-precision and high-precision measurement. The measurement reliability, the dynamic range and the adaptive capacity of the system under complex working conditions are improved, and multiplier-level breakthrough of the sensitivity of the system and collaborative optimization of the performance are achieved.