Wireless detection and communication integrated area danger early-warning system and method

Abstract

The invention discloses a wireless detection and communication integrated area danger early-warning system and an area danger early-warning system method. The area danger early-warning system and method adopt a cloud wireless network architecture to deploy a public network or private network authorized frequency band RRU and a millimeter wave frequency band RRU. The system and method detect surrounding environment detection by reasonably making use of the characteristics of the public network or private network authorized frequency band RRU and the millimeter wave frequency band, and meanwhile realize highly reliable high-capacity wireless communication by utilizing idle resources and feed environment detection results back to a ground monitoring center through a communication function. The aim of early earning of danger is therefore fulfilled. Physical layer frames of the public network or private network authorized frequency band are used to transmit low-capacity reliable wireless communication data. The physical layer frames of the millimeter wave frequency band RRU, according to demands, are divided into detection frames in which the millimeter wave frequency band RRU receives and transmits environment detection signals and wireless communication frames in which the millimeter wave frequency band RRU transmits high-capacity non-reliable communication data. An uplink and downlink data transmission signal process of the integration of the public network or private network authorized frequency band and the millimeter wave frequency band during the time of wireless communication frames is also designed.

Description

Technical field [0001] The present invention relates to the field of wireless detection and communication, in particular to a system and method for realizing millimeter wave frequency band wireless detection and communication integration on the basis of a cloud wireless network architecture. Background technique [0002] In the past communication systems, the public or private network authorized frequency bands (bands below 3.5 GHz) with better transmission characteristics were mainly used, and the high frequency bands above 5 GHz were rarely involved. Therefore, these high frequency bands are still A very wide continuous available spectrum is reserved. It can be predicted that for a long period of time in the future, the millimeter wave wireless communication system will be able to realize the huge economic benefits of ultra-high-speed data transmission and low cost. [0003] Another important application of the millimeter wave frequency band is high-precision wireless detection....

AI Technical Summary

Problems solved by technology

[0008] In the above-mentioned prior art (1), wireless transmission sensor monitoring equipment and monitoring base stations need to be laid in high density along the railway line, and the maintenance cost is high, and if some sensors are abnormal, it will lead to failure of the overall monitoring system, and its disaster warning performance Also depends on the reliability of the information transmission channel

At the same time, this solution is only limited to the monitoring of landslides, and loses the monitoring function for falling rocks and foreign matter invasion.

[0009] In the above-mentioned prior art (2), the laser detection is only detected on one plane, and the three-dimensional information of the object cannot be detected.

During night detection, it is necessary to use additional visible light to illuminate the predetermined road section. Even so, in severe weather conditions such as rainfall, snowfall, and fog, or when there are interfering light sources around the road, the quality of image information collection will be seriously affected. When the laser detects an abnormal state, it cannot accurately determine what kind of disaster caused it, resulting in a large number of false alarms

[0010] In the above prior art (3), in order to send the radar detection results back to the monitoring center, a set of monitoring network needs to be specially built, and the reuse rate is low

Due to the low probability of disasters and each radar works independently, it will cause redundancy in radar signal processing performance and waste of cost

When the ground monitoring center receives the early warning signal, since the vehicle may not have a wireless signal on the way, it cannot directly communicate with the monitoring center. It can only be forwarded through the "natural disaster and geological disaster monitoring device", which increases the complexity of the system.

In addition, the frequency band it uses is a public network or private network licensed frequency band, with low bandwidth and limited detection accuracy

Images