"CCTV News": Sensing China - guarding the way home for the sake of minutes and seconds

First of all, let's take a look at the introduction, how sensors play an important monitoring role in the Chinese New Year Holiday(Spring Festival), and guard the way home for hundreds of millions of people every second.

Chagarab, who lives in Ganzi Tibetan Autonomous Prefecture of Sichuan Province, in the Southwest of China, boarded the Fuxing train bound for Chengdu at Chongqing North Railway Station. In a short 77 minutes' drive, this train passes through one of the most unstable regions in the world, with an average of 1 tunnel drilled every 3 minutes. In the fast driving in the dark tunnel, the subtle safety hazards that cannot be identified by the naked eye are also eliminated by the automatic warning of many sensors such as monitoring tunnel deformation and track settlement.

On the second half way home, Chagarab boarded the bus and drove to Yakang Expressway. This is a cloud-like road that fulfills the dream of the people's highway in Ganzi region. It climbs rapidly from the Sichuan Basin to the Qinghai-Tibet Plateau. The 135-kilometer journey will experience a 2000-meter height difference and span seven super bridges.

 The Xingkang Grand Bridge across the Dadu River is built in a high altitude, high seismic intensity zone and complex wind field environment, but it can achieve a design speed of 80 kilometers per hour, and has been put into operation for more than four years, with continuous traffic flow day and night. How can the bridge resist the security challenges brought by the outside world?

It turned out that as soon as the bus got on the bridge, the sensors installed in different parts of the bridge began to work. At this moment, the ultra-high precision inclination sensor installed on the bridge deck began to calculate the bridge deck deflection, the inclination sensor installed on the bridge tower collected the bridge tower inclination deformation data, the sensors at each part of the main beam collected the bridge deck vibration frequency and amplitude data, and the information fusion historical data, and the system calculated the current and future bearing capacity of the bridge.

 At the same time, sensors sensing environmental hazards monitor subtle changes such as ground motion and wind blowing Many sensors jointly safeguard the safety of the bridge in minutes and inches.

 During the Chinese New Year Holiday(Spring Festival), more than 30 million people are on the way home like Chagarab on average every day, with smart trains speeding and buses passing through bridges and tunnels. Tens of millions of sensors are woven into a precise and comprehensive safety net to protect every traveler and give people more warmth and safety.