原文传递
Breakthrough in urban signals
| 题名： | Breakthrough in urban signals |
| 正文语种： | eng |
| 作者： | Dominic Browne |
| 摘要： | Even a common occurrence like people talking on walkie-talkies at a nearby construction site could cause a radio signal to become jammed and temporary traffic signals to shut down completely or go 'all red' - causing a serious road safety concern. But, building on more than four years of research and development, Traffic Group Signals has boosted the performance of its active channel management (ACM) technology by observing patterns in radio use to identify peak and off-peak usage and times where spikes are likely to occur. 'The team performed a spectrum analysis at a challenging test site to discover that 75% of the available 458MHz radio band was in use daily by other services. This equates to 11 unusable channels in a 15-channel radio system or 23 unusable channels in a 32-channel radio system,' the company said in a statement. 'This new data was used to expand the capabilities of the ACM system, allowing the technology to overcome channel conflict by self-monitoring patterns using the 458MHz band over an extended period and automatically remembering which channels to avoid.' |
| 出版年： | 2023 |
| 期刊名称： | Highways |
| 卷： | 92 |
| 期： | 8 |
| 页码： | 46-46 |
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