科学通识与工程精读·英语30篇（1）
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How Piezoelectric Energy Harvesting Powers Wireless Structural Health Monitoring Sensors
压电能量采集如何驱动无线结构健康监测传感器
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Piezoelectric transducers convert mechanical strain from bridge vibrations, wind loading, or pedestrian footfall into usable electrical energy—enabling maintenance-free sensor networks.压电传感器将桥梁振动、风荷载或行人踩踏产生的机械应变转化为可用的电能，从而实现免维护的传感网络。
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Modern harvesters use lead zirconate titanate (PZT) composites engineered for broadband resonance, capturing energy across 1–500 Hz—covering most civil infrastructure vibration spectra.现代能量采集器采用为宽带共振设计的锆钛酸铅（PZT）复合材料，可捕获1–500 Hz范围内的能量，覆盖绝大多数土木基础设施的振动频谱。
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Energy management circuits prioritize voltage regulation over peak output, ensuring stable 3.3V supply for IEEE 802.15.4 radios despite intermittent mechanical input.能量管理电路优先保障电压稳定而非峰值输出，确保在机械输入间歇时仍能为IEEE 802.15.4无线模块提供稳定的3.3 V供电。
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Structural health algorithms run locally on edge processors, transmitting only anomaly flags—not raw data—reducing bandwidth demand and battery dependency.结构健康算法在边缘处理器上本地运行，仅上传异常标志而非原始数据，大幅降低带宽需求和电池依赖。
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Bridge deck installations show 92% uptime over five years, outperforming coin-cell-powered equivalents that required replacement every 18 months.桥面安装实测五年内正常运行率达92%，远超需每18个月更换一次纽扣电池的同类设备。
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Calibration protocols account for temperature-dependent piezoelectric coefficients, using embedded thermistors to auto-compensate signal drift.校准协议考虑压电系数随温度变化的特性，利用嵌入式热敏电阻自动补偿信号漂移。
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Regulatory acceptance hinges on ISO 14223 certification for electromagnetic compatibility—ensuring harvesters don’t interfere with adjacent navigation or communication systems.监管认可取决于是否通过ISO 14223电磁兼容性认证，确保能量采集器不会干扰邻近导航或通信系统。
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Lifecycle analysis reveals payback periods under 3 years for high-traffic bridges, factoring in reduced inspection labor and early crack detection savings.全生命周期分析表明，在高流量桥梁上，投资回收期不足3年，已计入巡检人力节省与早期裂缝识别带来的收益。
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Cross-disciplinary design integrates materials science (ceramic fatigue resistance), civil engineering (strain mapping), and cybersecurity (encrypted firmware updates).跨学科设计融合材料科学（陶瓷抗疲劳性）、土木工程（应变分布建模）与网络安全（加密固件更新）。
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Urban infrastructure dashboards now visualize energy harvesting efficiency alongside structural strain metrics—treating power autonomy as a health indicator.城市基础设施仪表盘如今同步可视化能量采集效率与结构应变指标，将供电自主性视为一项健康指标。
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This convergence transforms passive infrastructure into responsive systems, blurring lines between construction, electronics, and predictive analytics.这种融合使被动基础设施转变为响应式系统，模糊了建筑、电子与预测分析之间的界限。
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Ultimately, piezoelectric harvesting doesn’t just power sensors—it redefines infrastructure as a self-sustaining, data-generating entity.最终，压电能量采集不仅为传感器供电，更将基础设施重塑为自维持、自产数据的实体。