传感器与微系统
傳感器與微繫統
전감기여미계통
Transducer and Microsystem Technologies
2015年
10期
83-85,89
,共4页
梁帮伟%韦佳宏%刘冲%张志新
樑幫偉%韋佳宏%劉遲%張誌新
량방위%위가굉%류충%장지신
传感器节点%测试系统%振动信号%时频特性
傳感器節點%測試繫統%振動信號%時頻特性
전감기절점%측시계통%진동신호%시빈특성
sensor node%testing system%vibration signal%time-frequency characteristics
传感器节点用于采集轮轨作用下钢轨的振动信号以分析钢轨振动特性。为了测试传感器节点的工作性能,设计并实现了能提供稳定振动信号的测试系统。测试系统基于MSP430单片机,由控制单元、激振器、简支梁结构以及监控软件组成。实验表明:在给定加载条件下测试系统可稳定提供10N的激振力,产生峰值为93×10-6的动态应变和97 gn 的振动加速度。通过分析采集数据的时频特性,可以有效发现故障节点。
傳感器節點用于採集輪軌作用下鋼軌的振動信號以分析鋼軌振動特性。為瞭測試傳感器節點的工作性能,設計併實現瞭能提供穩定振動信號的測試繫統。測試繫統基于MSP430單片機,由控製單元、激振器、簡支樑結構以及鑑控軟件組成。實驗錶明:在給定加載條件下測試繫統可穩定提供10N的激振力,產生峰值為93×10-6的動態應變和97 gn 的振動加速度。通過分析採集數據的時頻特性,可以有效髮現故障節點。
전감기절점용우채집륜궤작용하강궤적진동신호이분석강궤진동특성。위료측시전감기절점적공작성능,설계병실현료능제공은정진동신호적측시계통。측시계통기우MSP430단편궤,유공제단원、격진기、간지량결구이급감공연건조성。실험표명:재급정가재조건하측시계통가은정제공10N적격진력,산생봉치위93×10-6적동태응변화97 gn 적진동가속도。통과분석채집수거적시빈특성,가이유효발현고장절점。
Sensor nodes are used to collect vibration signal of rail in order to analyze vibration characteristics of railway. To test working performance of sensor nodes,design and realize testing system. Which can provide stable vibration signal based on MCU MSP430,the testing system consists of control unit,vibration exciter,simple supported beam and monitoring software. Experiments show that in definite loading condition,the system can steadily offer 10N of force,93 × 10-6 of dynamic strain in maximum and 97 gn of acceleration in maximum. Through analyzing time-frequency characteristics of collecting data,fault nodes can be found efficiently.