Research on the Verification Method of Vehicle Horn Monitoring System

TANG Jiahao; ZHOU Changhua; LI Lin

doi:10.12338/j.issn.2096-9015.2024.0165

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TANG Jiahao, ZHOU Changhua, LI Lin. Research on the Verification Method of Vehicle Horn Monitoring System[J]. Metrology Science and Technology. doi: 10.12338/j.issn.2096-9015.2024.0165

Citation:

TANG Jiahao, ZHOU Changhua, LI Lin. Research on the Verification Method of Vehicle Horn Monitoring System[J]. Metrology Science and Technology. doi: 10.12338/j.issn.2096-9015.2024.0165

TANG Jiahao, ZHOU Changhua, LI Lin. Research on the Verification Method of Vehicle Horn Monitoring System[J]. Metrology Science and Technology. doi: 10.12338/j.issn.2096-9015.2024.0165

Citation:

TANG Jiahao, ZHOU Changhua, LI Lin. Research on the Verification Method of Vehicle Horn Monitoring System[J]. Metrology Science and Technology. doi: 10.12338/j.issn.2096-9015.2024.0165

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Research on the Verification Method of Vehicle Horn Monitoring System

doi: 10.12338/j.issn.2096-9015.2024.0165

Guangzhou Institute of Metrology and Detection Technology, Guangzhou 510663, China

Received Date: 2024-05-21
Accepted Date: 2024-07-15
Rev Recd Date: 2024-08-17

Available Online: 2024-08-21

Abstract

Abstract

As an off-site law enforcement system, the vehicle horn monitoring system is an effective tool for traffic police to monitor and penalize illegal vehicle horn usage. This study focuses on the verification methods for such systems, particularly analyzing the sound source localization algorithm principles. It investigates the key verification items listed in the national verification regulations, including measurement error of sound pressure level, spatial resolution, positioning error, effective identification area, and the time consistency of acousto-optic images. By analyzing the localization results of sound sources at different frequencies and positions, the study identifies patterns relevant to vehicle horn monitoring systems. The results show that sound pressure level measurements should be conducted in an anechoic chamber to minimize unnecessary sound reflections. Additionally, there is an inverse relationship between spatial resolution and resolution angle at different frequencies. Positioning error is more pronounced in the Y-axis direction due to greater distance attenuation effects, resulting in larger errors compared to the X-axis direction.
- metrology,
- vehicle horn monitoring system,
- sound source localization,
- sound pressure level,
- spatial resolution,
- time consistency of acousto-optic images

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References(30)

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