Adjustable hydrogen loss detection signal source module and hydrogen loss detection system

Abstract

The invention discloses an adjustable hydrogen loss detection signal source module and a hydrogen loss detection system.The adjustable hydrogen loss detection signal source module comprises a signal generation unit, an adjustment control unit and a signal output unit, and the signal generation unit generates an initial hydrogen loss detection signal; the adjustment control unit performs customized adjustment on the initial signal according to different material characteristics, environmental conditions and stress states; the signal output unit outputs the adjusted signal to the detector; the hydrogen loss detection system further comprises a hydrogen loss signal detector and a data processing unit, accurate detection of hydrogen-induced damage of the material can be achieved, signals can be flexibly adjusted according to different detection requirements, the detection precision and adaptability are improved, and the hydrogen loss detection system has important application value.

Description

Technical Field

[0001] This invention belongs to the field of hydrogen-induced damage detection technology, specifically relating to an adjustable hydrogen damage detection signal source module and a hydrogen damage detection system. Background Technology

[0002] Hydrogen-induced damage detection has always been a crucial step in the safety assessment of materials in the hydrogen energy field, playing a vital role in ensuring the reliability and service life of hydrogen energy equipment. Current hydrogen-induced damage detection technologies and equipment have several limitations, primarily in the following aspects: Traditional detection methods, such as conventional ultrasonic testing and radiographic testing, while widely used in materials testing, struggle to achieve high precision and sensitivity in hydrogen-induced damage detection. Firstly, these methods are insufficient in identifying early damage features such as minute hydrogen-induced cracks and micropores, often only detecting them after the damage has progressed to a certain stage. This makes it difficult to detect potential problems in the early stages of hydrogen-induced damage, failing to meet the needs of early warning and preventative maintenance for hydrogen energy equipment. Secondly, existing detection equipment typically uses fixed signal parameters, unable to flexibly adjust the detection signal according to different material properties, environmental conditions, and stress states. This results in poor adaptability when dealing with various detection targets, making it difficult to guarantee detection accuracy. Furthermore, existing hydrogen-induced damage detection equipment has a low level of intelligence and cannot automatically optimize the detection signal in real time according to the detection environment and material condition. This makes it difficult to achieve efficient detection process control and data feedback, which not only affects detection efficiency but also limits the widespread application of hydrogen-induced damage detection technology in complex industrial environments.

[0003] Therefore, overcoming the shortcomings of existing hydrogen-induced damage detection technologies and developing a hydrogen damage detection signal source module capable of customized signal adjustment according to different materials, environments, and stress conditions to achieve high-precision, high-sensitivity, and widely adaptable hydrogen-induced damage detection is a pressing technical challenge in the current hydrogen energy field, and it has extremely important practical significance for promoting the safe development of the hydrogen energy industry. Summary of the Invention

[0004] Hydrogen-induced damage detection is a core component of material safety assessment in the hydrogen energy field, and its detection accuracy and adaptability directly affect the reliability and service life of hydrogen energy equipment. Current hydrogen-induced damage detection technologies and equipment face multiple technical bottlenecks, necessitating breakthroughs in detection limitations through the adjustability of signal sources to achieve accurate identification and early warning of hydrogen-induced damage to materials.

[0005] The primary problem with existing hydrogen-induced damage detection technologies lies in their insufficient detection accuracy, making it difficult to capture early damage characteristics. Traditional detection methods, such as conventional ultrasonic testing and radiographic testing, have limited ability to identify minute early damage such as hydrogen-induced cracks and micropores. Detection often requires damage to develop to a significant stage, failing to meet the preventative maintenance needs of hydrogen energy equipment. This is because existing technologies have not designed detection signals tailored to the microscopic characteristics of hydrogen-induced damage, resulting in ineffective coupling between the signal and the internal damage mechanism of the material. Consequently, it is difficult to accurately reflect the early damage state through changes in signal characteristics.

[0006] Secondly, existing detection equipment uses fixed signal parameters and lacks the ability to adaptively adjust to material properties, environmental conditions, and stress states. Different materials exhibit significantly different acoustic properties (such as sound velocity and impedance). Changes in ambient temperature and pressure affect signal transmission attenuation, while the stress state of the material can alter the signal scattering characteristics at the damage site. However, traditional detection systems use signals with fixed frequency, amplitude, and phase, making it impossible to dynamically optimize detection parameters based on these variables. For example, when switching from titanium alloy to stainless steel, a fixed-frequency signal may result in a detection blind zone due to mismatch with the material's sound velocity; under high temperature and pressure conditions, if the signal amplitude is not compensated for environmental attenuation in real time, it will cause deviations in the detection results; and if the signal phase changes in stress concentration areas are not corrected, they may mask the characteristic response of hydrogen-induced damage.

[0007] Furthermore, existing testing equipment has a low level of intelligence, failing to achieve real-time dynamic optimization and closed-loop control of the detection signals. Specifically, it lacks integrated parameter input interfaces, pre-stored material property databases, and adaptive adjustment algorithms, making it difficult to automatically invoke corresponding compensation strategies based on real-time acquired environmental parameters and material states. This leads to the testing process relying on manual experience for adjustment, resulting in low efficiency and susceptibility to subjective factors, especially in complex industrial scenarios (such as the multi-stress state of hydrogen storage tanks and the variable temperature environment of hydrogen pipelines), making it difficult to guarantee the reliability of the test results.

[0008] To overcome the shortcomings of existing technologies, the present invention provides an adjustable hydrogen loss detection signal source module, the technical solution of which includes:

[0009] A signal generation unit is used to generate an initial hydrogen loss detection signal;

[0010] An adjustment control unit, connected to the signal generation unit, is used to customize the initial hydrogen loss detection signal according to the characteristics of different materials, environmental conditions and stress state, so as to generate an adjustable hydrogen loss detection signal that adapts to different detection requirements.

[0011] The signal output unit, connected to the adjustment and control unit, is used to output the adjustable hydrogen loss detection signal to the hydrogen loss signal detector.

[0012] Preferably, the signal generation unit includes multiple signal generation circuits that can generate basic signals of different frequencies, amplitudes, and waveforms, providing a diverse initial signal basis for subsequent customized adjustments based on different detection requirements.

[0013] Preferably, the adjustment control unit includes a processor and a memory. The processor is used to adjust the frequency, amplitude, and phase of the initial hydrogen loss detection signal according to a pre-stored adjustment algorithm and input material properties, environmental conditions, and stress state parameters. The memory is used to store the adjustment algorithm and signal adjustment parameters corresponding to different material properties, environmental conditions, and stress states.

[0014] Preferably, the adjustment algorithm includes a frequency compensation algorithm based on the acoustic properties of the material, which can accurately adjust the signal frequency according to the response characteristics of different materials to the signal frequency, so that the output adjustable hydrogen loss detection signal has the best detection effect in the target material.

[0015] Preferably, the adjustment algorithm further includes an amplitude adjustment algorithm based on ambient temperature and pressure, which can compensate the signal amplitude in real time according to changes in ambient temperature and pressure, ensuring the stability and reliability of the adjustable hydrogen loss detection signal output under different environmental conditions.

[0016] Preferably, the adjustment algorithm also involves a phase optimization algorithm based on stress distribution, which can optimize and adjust the signal phase according to the stress state of the material, thereby improving the sensitivity and detection accuracy of hydrogen-induced damage.

[0017] Preferably, the signal output unit includes a signal conditioning circuit and a matching circuit. The signal conditioning circuit is used to amplify and filter the regulated hydrogen loss detection signal to meet the input requirements of the hydrogen loss signal detector. The matching circuit is used to match the output impedance of the signal source module with the input impedance of the hydrogen loss signal detector to ensure effective signal transmission and energy transfer.

[0018] Preferably, the adjustable hydrogen loss detection signal source module further includes a parameter input unit, which is used to input relevant parameters of material properties, environmental conditions and stress state, providing an adjustment basis for the adjustment control unit.

[0019] Preferably, the adjustable hydrogen loss detection signal source module further includes a power management unit, which provides a stable power supply to the entire module and monitors and manages the power supply to ensure the normal operation of the module under different working environments.

[0020] The present invention also provides a hydrogen loss detection system, comprising:

[0021] An adjustable hydrogen loss detection signal source module is used to generate and output an adjustable hydrogen loss detection signal;

[0022] A hydrogen loss signal detector is used to receive the adjustable hydrogen loss detection signal and detect the material's response signal under the action of the adjustable hydrogen loss detection signal;

[0023] A data processing unit is used to analyze and process the response signal to determine the hydrogen-induced damage status of the material.

[0024] Beneficial effects

[0025] This invention, by incorporating an adjustable signal source module, enables customized adjustment of the detection signal based on the characteristics of different materials, environmental conditions, and stress states, achieving high-precision, high-sensitivity, and widely adaptable hydrogen-induced damage detection. The adjustment control unit, based on a pre-stored adjustment algorithm and input parameters, adjusts the frequency, amplitude, and phase of the initial hydrogen damage detection signal, ensuring optimal detection performance under various detection conditions. The signal output unit ensures effective signal transmission and energy transfer, improving the stability and reliability of the detection system. This invention can be widely applied in the safety assessment and maintenance of hydrogen energy equipment, providing strong technical support for the development of the hydrogen energy industry.

[0026] This invention aims to construct a hydrogen-induced damage detection system that can dynamically adapt to diverse scenarios. Its core tasks include: generating various initial detection signals, such as sine waves and square waves, with frequencies ranging from 1Hz to 20MHz and amplitudes from 0.1 to 10V, through a signal generation unit to provide basic excitation for hydrogen damage detection; optimizing the frequency, amplitude, and phase of the initial signals in real time using an adjustment and control unit, combined with material properties (such as sound velocity and impedance), environmental conditions (temperature and pressure), and stress state parameters, to generate detection signals adapted to different needs; ensuring effective signal transmission (impedance matching ≥95%) through the conditioning and matching circuit of the signal output unit; collecting material response signals in conjunction with a hydrogen damage signal detector; and then using a data processing unit to achieve qualitative identification and quantitative assessment of hydrogen-induced damage (such as calculating the damage index DI); simultaneously supporting stable operation under extreme environments such as temperatures ranging from -40℃ to 85℃ and pressures ranging from 0.1 to 10MPa, meeting the early warning needs of equipment such as hydrogen storage tanks and hydrogen pipelines, and achieving the detection of microcracks at the 0.1mm level.

[0027] Its advantages are specifically reflected in significantly improved detection accuracy and sensitivity, strong adaptability to diverse scenarios, high detection efficiency and system reliability, and high degree of technological integration and engineering applicability. Improved detection accuracy stems from multi-dimensional adjustment algorithms and signal quality assurance: the frequency compensation algorithm calculates the optimal frequency based on a material sound velocity parameter library, avoiding detection blind spots; the phase optimization algorithm dynamically adjusts the phase based on stress distribution, enhancing damage sensitivity; signal conditioning and impedance matching circuits reduce noise and transmission loss, increasing detection sensitivity by 45% compared to traditional methods, enabling the identification of microcracks as small as 0.1mm. The adaptability to diverse scenarios benefits from a parameter-driven dynamic adjustment mechanism: the adjustment control unit pre-stores multi-dimensional algorithms and a material parameter library, updating signal parameters within 100ms based on input parameters (such as real-time data from temperature and pressure sensors). Combined with dual-mode parameter input via touchscreen and knob, signal amplitude fluctuation is less than 2%, improving environmental adaptability by over 50%. Improved detection efficiency and reliability rely on optimized hardware architecture and power supply design: the signal generation unit's multiplexer enables rapid switching between multiple waveforms, and the data processing unit employs wavelet noise reduction algorithms to shorten analysis time, with a single detection cycle of <3 minutes; dual power supply, low-power design (<15W), and overvoltage protection ensure stable operation of the module in extreme environments. Technical integration and engineering practicality stem from modular design and standardized interfaces: the signal generation, adjustment, and output units are independently packaged, supporting plug-and-play functionality and expansion of detection methods (such as ultrasonic and electrochemical detection). The parameter input interface is highly open, facilitating the expansion of detection parameters for new materials, reducing system integration costs while adapting to diverse industrial scenarios. Attached Figure Description

[0028] Figure 1 shows the signal generation and modulation process, where... Figure 1a Adjust the control unit algorithm flow, Figure 1b Signal generation unit process Figure 1c Signal output unit processing flow.

[0029] Figure 2 Hydrogen loss detection system process. Detailed Implementation

[0030] The technical solution of the present invention will be further described below with reference to the accompanying drawings.

[0031] The signal generation unit integrates multiple signal generation circuits. Among them, the Direct Digital Synthesizer (DDS) circuit, under the control of the microcontroller, generates high-precision signals with a wide frequency range based on digital signal processing technology and precise frequency control word settings. The function generator circuit, built around the NE555 timer, utilizes its internal pulse generation and modulation mechanism to output signals with different waveforms. The multiplexer uses the CD4051BE chip, enabling rapid switching between different signal source channels under the unified control of the microcontroller, ensuring diverse initial signals and providing a rich signal foundation for subsequent adjustment processes.

[0032] The adjustment and control unit, a key component for achieving adjustable functionality, operates based on complex algorithms and data processing logic. This unit receives material characteristic data from various sensors, such as sound velocity and impedance. This data is acquired by the sensors and transmitted to the adjustment and control unit as digital signals. Environmental condition data, including temperature and pressure, is collected and transmitted by corresponding temperature and pressure sensors. Stress state data is acquired through devices such as strain gauges and converted into electrical signals. The adjustment and control unit pre-stores algorithms for different data types, such as a frequency compensation algorithm based on the acoustic properties of the material. This algorithm uses a material sound velocity database to perform complex calculations to match the optimal detection frequency for a specific material, effectively avoiding detection blind spots caused by differences in material properties. An amplitude adjustment algorithm dynamically compensates for signal amplitude based on real-time changes in environmental parameters, adjusting the signal amplification factor to ensure signal stability under different environments. A phase optimization algorithm, combined with material stress distribution data, enhances sensitivity to hydrogen-induced damage characteristic signals by changing the signal phase. The entire adjustment process is executed by the processor using a pre-stored algorithm, while simultaneously calling the material parameter library and algorithm model stored in the memory to achieve precise dynamic optimization of the frequency, amplitude, and phase of the initial signal.

[0033] The signal output unit further processes the regulated signal to ensure effective transmission. The signal conditioning circuit uses operational amplifiers and other electronic components to amplify the signal amplitude to a range suitable for transmission and detection. Simultaneously, filters, such as common low-pass and band-pass filters, remove noise interference and improve signal quality. The impedance matching circuit, through a specific circuit structure such as a π-type LC network, adjusts circuit parameters based on the impedance characteristics of the signal source and the hydrogen damage detector to achieve impedance matching, reducing energy loss during transmission and ensuring efficient delivery of the excitation signal to the hydrogen damage detector. The processed signal is stably transmitted to the detection end through a standard interface, such as an SMA interface, providing a high-quality excitation signal for hydrogen-induced damage detection and ensuring the accuracy and reliability of the detection results.

[0034] The hydrogen damage detection system is based on a signal source module and works in conjunction with a hydrogen damage signal detector. After receiving the excitation signal from the signal source module, the hydrogen damage signal detector uses its own sensing elements, such as piezoelectric probes, to collect the response signals generated by the material under excitation. These response signals are transmitted to the data processing unit in the form of electrical signals. The data processing unit uses a series of signal processing algorithms, such as noise reduction algorithms to remove noise interference from the signal and feature extraction algorithms to extract feature signals related to hydrogen-induced damage. Combined with preset damage assessment algorithms, such as damage index calculation models, the system performs qualitative and quantitative assessment of the hydrogen-induced damage to the material, ultimately generating detection results to determine the hydrogen damage status of the material.

Claims

1. A hydrogen loss detection system, comprising: An adjustable hydrogen loss detection signal source module is used to generate and output an adjustable hydrogen loss detection signal; A hydrogen loss signal detector is used to receive the adjustable hydrogen loss detection signal and detect the material's response signal under the action of the adjustable hydrogen loss detection signal; A data processing unit is used to analyze and process the response signal to determine the hydrogen-induced damage status of the material.

2. The hydrogen loss detection system as described in claim 1, characterized in that, The adjustable hydrogen loss detection signal source module also includes a parameter input unit, which is used to input relevant parameters of material properties, environmental conditions and stress state, providing an adjustment basis for the control unit.

3. The hydrogen loss detection system as described in claim 1, characterized in that, The adjustable hydrogen loss detection signal source module also includes a power management unit, which provides a stable power supply to the entire module and monitors and manages the power supply to ensure the normal operation of the module under different working environments.

4. An adjustable hydrogen loss detection signal source module, characterized in that, include: A signal generation unit is used to generate an initial hydrogen loss detection signal; An adjustment and control unit, connected to a signal generation unit, is used to customize the initial hydrogen loss detection signal according to the characteristics of different materials, environmental conditions, and stress state, so as to generate an adjustable hydrogen loss detection signal that adapts to different detection requirements. The signal output unit, connected to the adjustment and control unit, is used to output the adjustable hydrogen loss detection signal to the hydrogen loss signal detector.

5. The signal source module as described in claim 4, characterized in that, The signal generation unit includes multiple signal generation circuits, which can generate basic signals of different frequencies, amplitudes and waveforms, providing a diverse initial signal basis for subsequent customized adjustments according to different detection requirements.

6. The signal source module as described in claim 4, characterized in that, The adjustment and control unit includes a processor and a memory. The processor is used to adjust the frequency, amplitude, and phase of the initial hydrogen loss detection signal according to a pre-stored adjustment algorithm and input material properties, environmental conditions, and stress state parameters. The memory is used to store the adjustment algorithm and signal adjustment parameters corresponding to different material properties, environmental conditions, and stress states.

7. The signal source module as described in claim 6, characterized in that, The adjustment algorithm includes a frequency compensation algorithm based on the acoustic properties of the material, which can accurately adjust the signal frequency according to the response characteristics of different materials to the signal frequency, so that the output adjustable hydrogen loss detection signal has the best detection effect in the target material.

8. The signal source module as described in claim 6, characterized in that, The adjustment algorithm also includes an amplitude adjustment algorithm based on ambient temperature and pressure, which can compensate for the signal amplitude in real time according to changes in ambient temperature and pressure, ensuring the stability and reliability of the adjustable hydrogen loss detection signal output under different environmental conditions.

9. The signal source module as described in claim 6, characterized in that, The adjustment algorithm also involves a phase optimization algorithm based on stress distribution, which optimizes and adjusts the signal phase according to the stress state of the material to improve the sensitivity and detection accuracy of hydrogen-induced damage.

10. The signal source module as described in claim 1, characterized in that, The signal output unit includes a signal conditioning circuit and a matching circuit. The signal conditioning circuit is used to amplify and filter the regulated hydrogen loss detection signal to meet the input requirements of the hydrogen loss signal detector. The matching circuit is used to match the output impedance of the signal source module with the input impedance of the hydrogen loss signal detector to ensure effective signal transmission and energy transfer.

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