Security Radar: Monitoring for Intrusion by People and Animals on Railways

Perimeter security radar
In today’s society, railway transportation, as an efficient and convenient mode of transportation, undertakes a large amount of passenger and freight transportation tasks, playing a crucial role in economic development and people’s lives. However, the safety of railway operations is always of top priority. Among them, the potential safety hazards caused by the intrusion of people and animals into railway areas cannot be ignored.
In recent years, accidents caused by people illegally entering railway tracks and animals accidentally entering railway boundaries have occurred from time to time. Pedestrians may cross the railway illegally for various reasons, such as taking shortcuts or out of curiosity. Their subjective initiative makes such intrusion behaviors often sudden and unpredictable. In some railway sections, domestic animals of surrounding residents or wild animals may also break into the railway area. At present, in the field of railway security, although physical protection measures such as fences are used in some sections to block the intrusion of people and large animals, this method has obvious limitations. It does not have the functions of active monitoring and alarming. Once the fence has loopholes due to natural damage, human sabotage, or other reasons, intrusion behaviors cannot be detected in a timely manner, thus posing a serious threat to railway safety. Therefore, it has become an urgent need to ensure railway traffic safety by using advanced technical means to monitor people and animals intruding into the railway boundary in real time. Among numerous technical solutions, security radar stands out with its unique advantages and has gradually become an important part of railway security.
Perimeter Security Radar Alarm System

Millimeter – wave radar, as an important type of security radar, has significant advantages in railway security. Millimeter – wave has a short wavelength and a high frequency, which endows it with strong penetration ability and extremely high resolution. In the complex railway environment, whether facing adverse weather conditions such as thick fog and sandstorms that reduce visibility or in low – light conditions at night, millimeter – wave radar can work stably and accurately detect intrusion targets.

To more intuitively understand the application effect of security radar in railway intrusion monitoring, let’s look at some actual cases. In an open subgrade section of a high – speed railway in China, a perimeter anti – intrusion alarm system based on millimeter – wave radar and vision fusion technology was installed. The millimeter – wave radar and vision fusion terminal of this system is installed on both sides of the railway line. The effective monitoring range of a single device can reach 20 – 220 meters, and it is basically not affected by terrain undulation. The system can divide general protection areas and key protection areas according to the different areas where intrusion targets enter the railway boundary, and take different levels of alarm measures. When people or large animals accidentally break into the general protection area, the system activates a level – one alarm, indicating the importance of the situation to the staff, but it is not particularly urgent. When the intrusion target enters the key protection area, the system immediately activates a level – two alarm, which is a key event alarm information triggered by the system. At the same time, it is accompanied by audible and visual alarms, and visual evidence is collected and uploaded to timely remind the staff to go to the scene to deal with potential safety hazards. Through actual operation and inspection, this system has a very low false alarm rate, strong stability, and its performance indicators meet and exceed industry standards, providing strong protection for the railway operation safety of this section.

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