The smart firefighting IoT remote monitoring system for urban areas has completed its third phase of construction, achieving comprehensive coverage of 206 connected units. Leveraging Lian Technology’s mature hardware sensing devices and data processing capabilities, the system can monitor key information in real-time, such as the status of firefighting facilities and the duty of the … Read more
Vitamin C is known as a “universal antidote,” and high doses of Vitamin C can enhance oxygen utilization efficiency.Below is a special case shared by Dr. Shi Fawu, for your reference:The younger brother of a beauty pageant contestant once drank too much alcohol, forgot about boiling water at home, and fell asleep in bed. When … Read more
Intelligent Wireless Internet of Everything Earthquake disconnection, jungle disconnection, battlefield disconnection— In these three disconnection scenarios, communication interruption is a “life-and-death chasm”. Traditional equipment fails, base stations are destroyed, rescue or combat falls into a “blind strike” dilemma. However, after the Wing Loong drone is equipped with a broadband self-organizing network module, it transforms into … Read more
In the context of large-scale construction of highways, high-speed railways, and urban rail transit, the number of long tunnels continues to increase, raising higher demands for communication assurance during both construction and operation phases. The Mesh self-organizing network communication integration solution launched by Shenzhen Zhijing Technology Co., Ltd. addresses practical pain points in tunnel scenarios … Read more
l When Property Management Meets Smart Fire Safety: The IoT Enhances Community Safety“Visible and Manageable” At three in the morning, a smoke detector in the underground garage of a community suddenly detects an abnormal smoke concentration, triggering an alarm automatically.—— The monitoring center’s large screen instantly displays precise location information, while simultaneously activating on-site sound … Read more
The combination of IoT sensors and drones has created numerous application scenarios. Various radar devices and gas sensors have well-established drone applications, especially in emergency situations where the convenience of drones allows for more flexible data detection, supporting various operational tasks. The Spanish firefighting department has experimented with a high-precision ultrasonic wind speed sensor combined … Read more
1.1 System Check 1. Port Check This is mainly used to check which ports are open on the server and which IP addresses are establishing connections. View all TCP connections netstat -tnlpa View UDP connections netstat -unlpa This is also used to view port connections, but it can show half-open connections initiated, such as outgoing … Read more
Fire safety is an essential and extremely important aspect of daily safety management. This document outlines the specific requirements for establishing fire safety regulations. According to the “Fire Protection Law” and the Ministry of Public Security’s Order No. 61, the fire safety regulations for units mainly include the following content: 1. Fire Safety Responsibility System … Read more
System Resource Anomalies System Resource Anomalies top<span><span><span># Real-time monitoring of CPU/memory, press P to sort by CPU (watch for suspicious processes with >70% usage)</span></span></span><span><span><span>htop</span></span></span><span><span><span># Enhanced version of top, supports mouse interaction (convenient for finding mining processes)</span></span></span><span><span><span>uptime</span></span></span><span><span><span># View system uptime (abnormal reboots may indicate an attack)</span></span></span><span><span><span>free</span></span></span><span><span><span>-h</span></span></span><span><span><span># Memory/swap usage (OOM may trigger abnormal processes)</span></span></span><span><span><span>df</span></span></span><span><span><span>-h</span></span></span><span><span><span># Disk space (watch … Read more
In the HW network protection initiative, host security is the core defense position. Once a host is compromised, not only will business operations be affected, but it may also trigger a chain of security risks. Today, we present a highly practical guide for emergency response and traceback countermeasures for HW hosts, covering hardening and inspection … Read more