IEEE Sensors Journal最新文献_第9页

A Novel Causal Federated Transfer Learning Method for Power Transformer Fault Diagnosis Based on Voiceprint Recognition 基于声纹识别的电力变压器故障诊断因果联邦迁移学习新方法

IF 4.3 2区综合性期刊

IEEE Sensors Journal Pub Date : 2025-08-11 DOI: 10.1109/JSEN.2025.3595427

Kai Zhang;Hongming Lu;Shuai Han;Xin Zhao

{"title":"A Novel Causal Federated Transfer Learning Method for Power Transformer Fault Diagnosis Based on Voiceprint Recognition","authors":"Kai Zhang;Hongming Lu;Shuai Han;Xin Zhao","doi":"10.1109/JSEN.2025.3595427","DOIUrl":"https://doi.org/10.1109/JSEN.2025.3595427","url":null,"abstract":"Fault diagnosis of power transformers based on voiceprint analysis has developed rapidly due to its nonintrusive advantages in recent years. However, it faces challenges in generalization across different voltage levels and collaborative training difficulties under distributed data barriers. Existing federated transfer learning (FTL) methods rely on statistical correlations, which are easily affected by noise and hinder better fault diagnosis performance. Therefore, this article proposes a novel causal FTL method for power transformer fault diagnosis based on voiceprint signals. First, a causal FTL framework is proposed by integrating a causal graph autoencoder into FTL to capture nonlinear causal features between voiceprint features and faults. Second, a graph autoencoder with a wavelet convolutional encoder layer and a subpixel convolutional decoder layer is constructed to extract domain-invariant causal features from key fault-related frequency bands. Third, a strategy is designed to aggregate encoder layer information using adversarial-loss-sensitive weighting, which effectively evaluates the contribution of each client while reducing communication overhead. Experimental results show that the proposed method can quickly identify fault types in cross-voltage-level power transformer fault diagnosis scenarios and outperforms existing models in all three scenarios. Even under a high noise level of −5 dB in the third scenario, the accuracy still exceeds 94%.","PeriodicalId":447,"journal":{"name":"IEEE Sensors Journal","volume":"25 18","pages":"35573-35584"},"PeriodicalIF":4.3,"publicationDate":"2025-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145073275","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

IGBT Junction Temperature Monitoring and State Identification Based on AWG-NN 基于AWG-NN的IGBT结温监测与状态识别

IF 4.3 2区综合性期刊

IEEE Sensors Journal Pub Date : 2025-08-11 DOI: 10.1109/JSEN.2025.3596186

Tianqi Li;Songwei Pei;Jinlong Zhang

{"title":"IGBT Junction Temperature Monitoring and State Identification Based on AWG-NN","authors":"Tianqi Li;Songwei Pei;Jinlong Zhang","doi":"10.1109/JSEN.2025.3596186","DOIUrl":"https://doi.org/10.1109/JSEN.2025.3596186","url":null,"abstract":"Precise monitoring of insulated gate bipolar transistors (IGBTs) junction temperature, which impacts device lifespan, is crucial for assessing their health and operational status. However, traditional monitoring methods are limited, and effective IGBT state assessment methods are lacking. This article presents a novel IGBT junction temperature monitoring and state identification method leveraging the synergy between arrayed waveguide grating (AWG) demodulation and neural networks (NNs). We first develop a comprehensive thermal simulation model of the IGBT to investigate temperature distribution, thermal stress, and potential weak points under diverse operating conditions. The junction temperature is calculated from the reflected wavelength data obtained by waveguide Bragg grating (WBG) sensors, while AWG enables high-precision, multichannel temperature monitoring through wavelength demodulation. For state identification, an attention-enhanced Siamese network (Siam-MMSA) is proposed. By designing a spatial micro-macro spatial attention (MMSA), integrating microscopic and macroscopic perspectives, this model leverages the attention mechanism to extract relationships between temperature features and aging status. Experimental results demonstrate that this method accurately captures dynamic junction temperature variations with an error margin below <inline-formula> <tex-math>$0.6~^{circ }$ </tex-math></inline-formula>C and achieves a 99.5% accuracy rate in IGBT state identification under testing conditions. This approach supports intelligent control, performance assessment, and lifespan optimization for power electronic devices, offering valuable engineering insights for real-world applications.","PeriodicalId":447,"journal":{"name":"IEEE Sensors Journal","volume":"25 19","pages":"37486-37498"},"PeriodicalIF":4.3,"publicationDate":"2025-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145204549","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Design, Simulation, and Modeling of a Highly Sensitive Multicapacitor Piezoelectric MEMS Accelerometer 高灵敏度多电容压电MEMS加速度计的设计、仿真与建模

IF 4.3 2区综合性期刊

IEEE Sensors Journal Pub Date : 2025-08-11 DOI: 10.1109/JSEN.2025.3595984

Rahul Kumar Gupta;Sanjeev Kumar Manhas

{"title":"Design, Simulation, and Modeling of a Highly Sensitive Multicapacitor Piezoelectric MEMS Accelerometer","authors":"Rahul Kumar Gupta;Sanjeev Kumar Manhas","doi":"10.1109/JSEN.2025.3595984","DOIUrl":"https://doi.org/10.1109/JSEN.2025.3595984","url":null,"abstract":"Increasing the on-chip sensitivity of an accelerometer enhances the transduction efficiency at the sensor level, thereby improving the signal-to-noise ratio (SNR) without introducing additional electronic noise. To enhance the sensitivity of the piezoelectric accelerometer, we report a novel series-connected multicapacitor pickup MEMS design. Using well-calibrated COMSOL simulations, we show that the number of series-connected integrated capacitors in the construction directly correlates with the differential sensitivity of the multicapacitor piezoelectric accelerometer. In this technique, the voltage across all the series capacitors in the structure is equal to that across the single-capacitor structure. A multicapacitor pickup structure can be designed using two, four, six, or more capacitors. The design is demonstrated using aluminum nitride (AlN) as a piezoelectric material, but it can be extended to other materials such as lead zirconate titanate (PZT) and zinc oxide (ZnO). Furthermore, we have developed a mathematical model for the multicapacitor structure of the piezoelectric accelerometer, and the results are compared with the simulated data, showing excellent accuracy with an error of less than 4%. The proposed method demonstrates significant potential for improving the efficiency of various vibration-sensing/energy-harvesting MEMS structures. The device proposed in this work has a wide range of applications, including autonomous systems, machine/structure health monitoring, and navigation systems.","PeriodicalId":447,"journal":{"name":"IEEE Sensors Journal","volume":"25 18","pages":"35418-35425"},"PeriodicalIF":4.3,"publicationDate":"2025-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145073215","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Triaxial Micro Force Plate Array for Measuring Ground Reaction Force in Ant Locomotion 蚂蚁运动中地面反作用力测量的三轴微力板阵列

IF 4.3 2区综合性期刊

IEEE Sensors Journal Pub Date : 2025-08-11 DOI: 10.1109/JSEN.2025.3595999

Toshihiro Shiratori;Hidetoshi Takahashi

{"title":"Triaxial Micro Force Plate Array for Measuring Ground Reaction Force in Ant Locomotion","authors":"Toshihiro Shiratori;Hidetoshi Takahashi","doi":"10.1109/JSEN.2025.3595999","DOIUrl":"https://doi.org/10.1109/JSEN.2025.3595999","url":null,"abstract":"Terrestrial insects, such as ants, are known for their agile locomotion on six legs. However, the ground reaction force (GRF) of each leg has not been well characterized due to its difficulty in measurement. In this report, a micro force plate array is presented that uses the sampling Moiré (SM) method, a prism, and a single camera to simultaneously measure the triaxial GRFs of multiple legs of an ant during its locomotion. The SM method is a high-resolution measurement method that measures the amount of displacement based on the shift of a captured grid pattern. The proposed micro force plate array consists of a <inline-formula> <tex-math>$3 times 3$ </tex-math></inline-formula> array of <inline-formula> <tex-math>$2900 times 2900 times 70 ; mu $ </tex-math></inline-formula>m plate bases with a gap of <inline-formula> <tex-math>$100 ; mu $ </tex-math></inline-formula>m as the contact surface of the ant legs. The plate base is supported by a spring structure with a grid pattern. By capturing this grid pattern from the backside via a prism, a camera can capture images from two different directions, allowing the triaxial displacement to be measured. By dividing the plate surface into nine sections and evaluating the error based on the position of the force application in the z-direction force, a maximum measurement error of 6% was found. The average force resolution in the x-, y-, and z-directions for the nine plates was 3.34, 2.47, and <inline-formula> <tex-math>$1.20 ; mu $ </tex-math></inline-formula>N, respectively. With the developed force plate array, it was possible to measure the GRF of each leg simultaneously while the ant was walking.","PeriodicalId":447,"journal":{"name":"IEEE Sensors Journal","volume":"25 18","pages":"34480-34490"},"PeriodicalIF":4.3,"publicationDate":"2025-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145073274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dynamics Modeling and Parameter Identification of a Double-Layer 6-DOF Stewart Platform for Simulating Marine Exploration Processes 海洋勘探过程模拟双层六自由度Stewart平台动力学建模与参数辨识

IF 4.3 2区综合性期刊

IEEE Sensors Journal Pub Date : 2025-08-11 DOI: 10.1109/JSEN.2025.3596150

Chenxuan Wang;Min Wu;Yawu Wang;Chengda Lu;Sheng Du;Zhejiaqi Ma;Zeyi Wang

{"title":"Dynamics Modeling and Parameter Identification of a Double-Layer 6-DOF Stewart Platform for Simulating Marine Exploration Processes","authors":"Chenxuan Wang;Min Wu;Yawu Wang;Chengda Lu;Sheng Du;Zhejiaqi Ma;Zeyi Wang","doi":"10.1109/JSEN.2025.3596150","DOIUrl":"https://doi.org/10.1109/JSEN.2025.3596150","url":null,"abstract":"Effective stability control is essential for marine resource exploration platforms, but conducting experiments on actual platforms is costly and risky. To address these challenges, this article proposes a simulation system based on a double-layer 6-degree-of-freedom (DOF) Stewart platform, enabling realistic simulations of marine exploration processes and various control experiments. The lower platform simulates environmental disturbances (e.g., waves, wind, and currents), while the upper platform replicates the exploration platform’s movements. This double-layer structure effectively models the interactions between the platform’s movements and the environmental forces, providing a more accurate representation of real-world conditions. A comprehensive dynamics model is established using the Lagrangian method and the virtual work principle to account for both kinematic and dynamics interactions. A nonlinear gray system estimation (NGSE) method with a trust-region reflective algorithm is used for parameter identification, and model order reduction improves accuracy and feasibility. Comparisons with real marine platform models validate the system, confirming that it accurately simulates marine resource exploration dynamics. The experimental results show that the parameter estimation error of the proposed model remains below 8.08%. The active-compensation strategy reduces the root-mean-square (rms) horizontal displacement from 0.122 to 0.023 m, representing an 81% decrease, and lowers the rms attitude error from 0.139 to 0.012 rad, corresponding to a 91% reduction. These results confirm the reliability of the dynamics model and highlight the experimental system’s value for stability control research on marine exploration platforms.","PeriodicalId":447,"journal":{"name":"IEEE Sensors Journal","volume":"25 18","pages":"35289-35302"},"PeriodicalIF":4.3,"publicationDate":"2025-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145078674","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Novel Haptic Feedback-Based Interaction Control Strategy for Robot-Assisted Vascular Interventional Surgery 一种基于触觉反馈的机器人辅助血管介入手术交互控制策略

IF 4.3 2区综合性期刊

IEEE Sensors Journal Pub Date : 2025-08-11 DOI: 10.1109/JSEN.2025.3596106

Xiaoliang Jin;Aiguo Song;Jianjun Zhu;Cheng Wang;Yi Zhang;Lifeng Zhu

{"title":"A Novel Haptic Feedback-Based Interaction Control Strategy for Robot-Assisted Vascular Interventional Surgery","authors":"Xiaoliang Jin;Aiguo Song;Jianjun Zhu;Cheng Wang;Yi Zhang;Lifeng Zhu","doi":"10.1109/JSEN.2025.3596106","DOIUrl":"https://doi.org/10.1109/JSEN.2025.3596106","url":null,"abstract":"Robot-assisted vascular interventional surgery (VIS) is an advanced treatment method that uses robotic systems to perform remote surgical procedures. Haptic feedback is crucial for restoring the interventionist’s sense of presence, allowing them to effectively operate instruments and accurately perceive surgical status. However, despite recent advancements, the quality of haptic feedback remains inferior to traditional manual operation, potentially compromising operational safety during surgery. Our previous work involved designing and developing a novel haptic feedback-based leader device that aligns with interventionists’ operating habits and accurately reproduces follower-side operating forces. This article further optimizes the leader device to improve haptic feedback. Furthermore, we propose a safe interaction control strategy that integrates force and morphological features of surgical instruments. Compared to existing methods, the proposed strategy incorporates an important control parameter—morphological features of surgical instruments. Verification results confirm this strategy’s effectiveness, enhancing robot system–interventionist interaction. This research has the potential to provide safer and more efficient treatment options.","PeriodicalId":447,"journal":{"name":"IEEE Sensors Journal","volume":"25 18","pages":"34491-34501"},"PeriodicalIF":4.3,"publicationDate":"2025-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145089954","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thermoelectric Sensor of a Single-Photon Detector 单光子探测器的热电传感器

IF 4.3 2区综合性期刊

IEEE Sensors Journal Pub Date : 2025-08-11 DOI: 10.1109/JSEN.2025.3595645

Astghik A. Kuzanyan;Vahan R. Nikoghosyan;Armen S. Kuzanyan

引用次数: 0

MEMS Thermal Mass Flow Sensor Response Time Optimization MEMS热质量流量传感器响应时间优化

IF 4.3 2区综合性期刊

IEEE Sensors Journal Pub Date : 2025-08-08 DOI: 10.1109/JSEN.2025.3595412

Sun Guotai;Li Cunrong;Zhang Enming;Lim Kimhong;Zhuo Jinhao;Gong Jingwen

{"title":"MEMS Thermal Mass Flow Sensor Response Time Optimization","authors":"Sun Guotai;Li Cunrong;Zhang Enming;Lim Kimhong;Zhuo Jinhao;Gong Jingwen","doi":"10.1109/JSEN.2025.3595412","DOIUrl":"https://doi.org/10.1109/JSEN.2025.3595412","url":null,"abstract":"To solve the problem of long dynamic response time of MEMS thermal mass flow sensor in real production process, this article investigates the heat transfer process between the heater and the gas during the flow rate changes. A prediction model based on the time constant is proposed to predict the steady-state mass flow rate after a flow rate change in advance. For the prediction accuracy of the model, this article analyses the influence mechanism of the gas temperature change of the MEMS thermal mass flow sensor. The functional relationship between the fitting flow rate, gas temperature and actual flow rate is constructed using a binary regression equation, which eliminates the measurement error caused by gas temperature change. Meanwhile, the improved Kalman filter algorithm is utilized to process the raw measurement data of the MEMS thermal sensor in real time to eliminate the noise error caused by the input signal and the external circuit. Finally, the experimental results show that when the mass flow rate varies from 0 to 100 kg/h, the response time is reduced by 50%–70%, and the prediction accuracy of the model reaches more than 98.5%.","PeriodicalId":447,"journal":{"name":"IEEE Sensors Journal","volume":"25 18","pages":"34379-34388"},"PeriodicalIF":4.3,"publicationDate":"2025-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145073437","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Instrumental Error Analysis of a Static Triangulation Positioning System Using Infrared Beacons and a Ring-Topology Infrared Receiver 基于红外信标和环形拓扑红外接收机的静态三角定位系统的仪器误差分析

IF 4.3 2区综合性期刊

IEEE Sensors Journal Pub Date : 2025-08-08 DOI: 10.1109/JSEN.2025.3595219

Maciej Ciãżkowski

{"title":"Instrumental Error Analysis of a Static Triangulation Positioning System Using Infrared Beacons and a Ring-Topology Infrared Receiver","authors":"Maciej Ciãżkowski","doi":"10.1109/JSEN.2025.3595219","DOIUrl":"https://doi.org/10.1109/JSEN.2025.3595219","url":null,"abstract":"Cooperative autonomous mobile robots (AMRs) in Industry 4.0 require precise navigation systems, especially indoors, where global navigation satellite system (GNSS) fails. To achieve these goals, variants of local navigation systems are being developed where localization is based on geometric measurements in a beacon–receiver system. Triangulation systems, based on angle measurements, are distinguished by the fact that, in addition to determining position, they allow precise determination of an object’s orientation, which is crucial for autonomous navigation of mobile robots. This article presents the concept of a triangulation positioning system that is completely static, i.e., it does not contain moving, rotating, or measuring elements, making it more durable, fast, and reliable. The proposed system uses an array of photodiodes evenly distributed on the receiver disk for simultaneous measurement of bearing angles to infrared beacons. A detailed mathematical model of the system is developed and enhanced by experimentally obtained photodiode sensitivity characteristics and analog-to-digital converter (ADC) noise data, and a comprehensive numerical–analytical analysis of all major instrumental error sources is performed. The results confirm that the proposed system achieves positioning performance comparable to state-of-the-art local positioning methods and can be an attractive solution for indoor navigation applications where commonly used satellite systems fail.","PeriodicalId":447,"journal":{"name":"IEEE Sensors Journal","volume":"25 18","pages":"34778-34792"},"PeriodicalIF":4.3,"publicationDate":"2025-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145089959","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Middle Underfill L-Standard Design for Highly Impedance Continuity in Four-Port Probe De-Embedding Calibration 四端口探头去嵌入校准中高阻抗连续性的中间下填l -标准设计

IF 4.3 2区综合性期刊

IEEE Sensors Journal Pub Date : 2025-08-08 DOI: 10.1109/JSEN.2025.3594824

Zhanjun Huang;Hui Li;Litao Ruan;Xinxin Tian;Shan Xue;Jun Luo;Guoguang Lu;Zhizhe Wang;Weiheng Shao

{"title":"A Middle Underfill L-Standard Design for Highly Impedance Continuity in Four-Port Probe De-Embedding Calibration","authors":"Zhanjun Huang;Hui Li;Litao Ruan;Xinxin Tian;Shan Xue;Jun Luo;Guoguang Lu;Zhizhe Wang;Weiheng Shao","doi":"10.1109/JSEN.2025.3594824","DOIUrl":"https://doi.org/10.1109/JSEN.2025.3594824","url":null,"abstract":"The calibration of the four-port three-component probe, measuring <inline-formula> <tex-math>${H}_{x}$ </tex-math></inline-formula>, <inline-formula> <tex-math>${H}_{y}$ </tex-math></inline-formula>, and <inline-formula> <tex-math>${E}_{z}$ </tex-math></inline-formula>, is interesting for near-field measurement. At high frequency, calibration errors caused by the frequency response are very distressing. These error reasons include the multiple refection caused by embedded part of the calibrator (first error term) and the single reflection caused by the probe approaching the calibrator (second error term). The first error term has been proven to be eliminated through de-embedding calibration method of two-port probe. However, the second error term cannot be removed by this method, which will cause the impedance discontinuity of calibration process. In this article, a middle underfill L-standard as a calibrator is proposed for a four-port three-component probe de-embedding calibration. The new L-standard design can increase the inductive reactance of transmission structure to resist the capacitive effect of the probe when approaching the calibrator. The results of simulation or measurement show that the new L-standard can improve the impedance continuity by nearly 75.6% with a suitable height. Compared with traditional embedding calibration method of four-port three-component probe, the frequency response after using the new calibrator can improve about <inline-formula> <tex-math>$0.7sim 2.2$ </tex-math></inline-formula> dB, and the ripples caused by embedded part can be eliminated.","PeriodicalId":447,"journal":{"name":"IEEE Sensors Journal","volume":"25 18","pages":"34689-34698"},"PeriodicalIF":4.3,"publicationDate":"2025-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145090002","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0