| 楼强华.一种超声料位仪换能器[J].声学技术,1991,(2):39~40 |
| 一种超声料位仪换能器 |
| An ultrasonic level measuring transducer |
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| 中文摘要: |
| 本文叙述了一种用于空气中测量料位的换能器,它向纵向振子为策动源,台阶补偿高阶弯曲板为辐射面,并为发收两用型。该换能器具有高指向性、低机械Qm值和高灵敏度的特点,已成功用于量程为20m煤仓的煤位检测。 |
| 英文摘要: |
| This paper describes a transducer that is intended for measuring the level of material in air. The elements connected longditudially in the array are used as the driving source and the high-order step-compensated flexural mode plate acts as the radiating face. The transducer works as both the sound projector and the echo receiver. It is characterized by high directivity,low mechanical Q and high sensitivity. A level measurement of coal in the coal bin bas been successfully made in the range of 20m. |
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