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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Yan-tao Zhang Shu-qin Li |
| Copyright Year | 2010 |
| Abstract | In this article, the measuring methods of open channel discharge are presented, and an ultrasonic open channel flowmeter is designed, which is made up of measuring flume or weir, ultrasonic sensors and secondary instrument. The circuits of transmitting ultrasonic, receiving ultrasonic and compensating temperature are detailed. The time error is eliminated basically by a series of echo signal processing, including preamplification, band-pass filtering, programmable amplification, envelope detection, differentiation, zero-crossing detection, and monostable triggering. At the same time, the sonic velocity is revised by temperature compensation circuit, and the software is developed by modular design method. According to the schemes, an ultrasonic open channel flowmeter based on AT89S52 is designed successfully, which has higher precision, higher reliability and better cost performance. |
| Starting Page | 1 |
| Ending Page | 4 |
| File Size | 225903 |
| Page Count | 4 |
| File Format | |
| ISBN | 9781424458721 |
| e-ISBN | 9781424458745 |
| DOI | 10.1109/IWISA.2010.5473502 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2010-05-22 |
| Publisher Place | China |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Temperature sensors Costs Ultrasonic variables measurement Filtering Instruments Design methodology Circuits Signal processing Band pass filters Envelope detectors |
| Content Type | Text |
| Resource Type | Article |
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