| 摘要: |
| 针对交通事故现场的再次碰撞会加大事故的严重性问题，提出了一种基于nRF24L01模块的交通事故现场报警系统.当车辆发生交通事故，nRF24L01模块将不断地向过往车辆发送无线信号.过往车辆接收端接收到信号后，STM32F429主控芯片控制音频编解码器播放语音，提醒司机减速慢行.与传统的nRF24L01模块相比，经过RFX2401C放大的无线信号传输距离更远.与灯光和广播信号相比，无线信号穿透性强，抗干扰能力强.实验证明，系统能达到远程提醒，防止再次碰撞的效果. |
| 关键词: 无线射频通信 STM32F429 RFX2401C 交通事故报警 |
| DOI：10.3969/J.ISSN.1000-5137.2018.02.017 |
| 分类号:TN92 |
| 基金项目: |
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| Design of traffic accident scene alarm system based on radio frequency |
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Zha Pinxian, Zhu Sulei
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The College of Information, Mechanical and Electrical Engineering, Shanghai Normal University, Shanghai 200234, China
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| Abstract: |
| In view of the increased seriousness of the accident caused by another collision on the scene of traffic accident,a traffic accident scene alarm system based on nRF24L01 is proposed.When a vehicle traffic accident occurs,the nRF24L01 module will keep sending wireless signals to the passing vehicles.After the passing vehicles receive the signals,audio codecs controlled by the STM32F429 master play the voice,and remind the drivers to slow down.Compared with the traditional nRF24L01 module,the transmission distance of the wireless signal amplified by RFX2401C can be farther.Compared with the signal of by light or broadcast,the wireless signal has strong penetration and strong anti-interference ability.Experiments show that the system can achieve long distance reminder to prevent another collision. |
| Key words: wireless RF communication STM32F429 RFX2401C traffic accident alarm |
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