| EPSRC Reference: |
GR/K24932/01 |
| Title: |
INVESTIGATION OF DIGITAL SOUND FIELD MAPPING TECHNOLOGY FOR AUTOMATIC MONITORING OF ROAD TRAFFIC. |
| Principal Investigator: |
Chen, Professor S |
| Other Investigators: |
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| Researcher Co-Investigators: |
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| Project Partners: |
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| Department: |
Engineering Systems |
| Organisation: |
London South Bank University |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 June 1995 |
Ends: |
31 May 1997 |
Value (£): |
77,956
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| EPSRC Research Topic Classifications: |
| Transport Ops & Management |
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Summary on Grant Application Form |
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The proposed 2 year research programme concerns the investigation of a digital sound field mapping technology for the application of automatic monitoring of road traffic. In the proposed system, an array of three microphones is installed on the road side. The sound field generated by the traffic is sampled and sent to an on-site microcomputer. The relative time delays between the sound wave travel from the source, a vehicle in this case, to different microphones can be retrieved using a cross correlation based algorithm and the position of the vehicle can be calculated from these delays. Positions of multiple vehicles within the frame of the microphone array are located in the same way. With the rapid advance of microprocessor technology, the digital processing task described above can be completed within such a short period of time as if a snap-shot is taken from a section from the traffic flow. Consecutive snap-shots in a short time interval will reveal the dynamic feature of the traffic such as speed and direction. The proposed system would be much more economical to install and maintain than loop detectors and more robust and flexible than laser, ultrasonic and microwave based systems.
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Key Findings |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Potential use in non-academic contexts |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
| Summary |
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| Date Materialised |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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| Project URL: |
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| Further Information: |
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| Organisation Website: |
http://www.lsbu.ac.uk |