¿Cómo funcionan las señales ferroviarias??

Transporte ferroviario silencioso: sistema de señales ferroviarias de decodificación misteriosa

en un exceso de velocidad órbita de acero del tren, como contador de horas de funcionamiento de precisión, detrás de su seguridad y eficiencia, esconde un conjunto de complejos y el sistema nervioso – el sistema de señales ferroviarias de la sabiduría. Este sistema utiliza ondas electromagnéticas como lenguaje y dispositivos mecánicos como extremidades para construir una barrera de seguridad en la conducción tridimensional.. Este artículo revelará la lógica operativa de este “comandante invisible” desde cuatro dimensiones: transmisión de señal, control de sección, Enclavamiento de estaciones y actualización inteligente..

1. Transmisión de señal

La red neuronal ferroviaria de transmisión de señales ferroviarias depende del portador físico de la diversificación.. Los cables tradicionales utilizan conductores con núcleo de cobre y estructuras protectoras multicapa., encoding traffic instructions such as turnout positions and speed limit information through current changes. Por ejemplo, the MHYVP-type signal cable uses tin-plated copper conductors and polyethylene insulation layers, which can maintain stable signal transmission in an environment ranging from -40℃ to 70℃. Its shielding layer can resist electromagnetic interference of over 50 dB. Modern wireless communication technology realizes two-way communication between the vehicle and the ground through the GSMA-R network. In the CTCS-3 level train control system, the onboard equipment exchanges position data with the ground wireless Block Center (RBC) cada 6 seconds to ensure real-time control at a speed of 350km/h. In tunnel special scenarios such as the leakage cable technology, this kind of slot conductor forms a continuous radiation field near 2.1 MiGui height, making the train through the tunnel still keep a 4 gramo / 5 g signal full. Experimental data show that the leakage cable signal attenuation rate is only 0.03 dB/m, a traditional base station coverage efficiency 80% increased.

 2.Range control

Block system of space and time art block system through virtual security section, to ensure that the train will not “crash”. The traditional fixed block divides the track into multiple fixed sections (usually 1.5-2km) and relies on the track circuit to detect the occupancy status. When a train enters a certain section, the track relay triggers a red light signal, and the trains behind it need to maintain a safe distance of at least three sections of 610. While moving block technology subverts this pattern. Based on the centimeter-level positioning of the Beidou satellite (with a horizontal accuracy of 2.5m and an elevation accuracy of 5m) and 5G communication (with a delay of < 10), the system dynamically calculates the braking curve of the train and forms a virtual zone that moves along with the train. Por ejemplo, in the application of the Beijing-Shanghai High-Speed Railway, the train tracking interval has been compressed from 3 minutes to 2 minutos, and the line’s transportation capacity has increased by 30%. The realization of this “elastic safety zone” relies on the speed-distance iterative operations of the onboard device 2,000 times per second to ensure that the emergency braking decision is completed within 0.1 artículos de segunda clase.

3.The station interlocking

Precision game station as a road network node, the security control by the interlocking system strictly. The system realizes the logical interlocking of signal machines, turnouts and approaches through triple redundant computers. Take the 97-type 25Hz phase-sensitive track circuit as an example. It adopts frequency modulation technology to increase the detection sensitivity to 0.15Ω·km and can identify vehicle occupation as short as 6 metros. When approaching the station, the train interlocking system startup “approach walkthrough” mecanismo: switch machine for 3 seconds to complete switch transformation (such as ZD9 type electric switch machine output 4500 n ZhuanHuanLi), signal synchronization switch lamp status. The entire process needs to go through 15 logical checks. Any equipment failure will trigger the “fail-safe” principle and automatically guide to the most conservative driving plan.

4.intelligent evolution

Count from mechanization to the evolutionary history of the signal system, reflected the transition of industrial civilization. In the early days, the template signal relied on manual switching, with response delays reaching the minute level. The modern CTCS-4 system has achieved fully automatic unmanned driving. The ID-Space system, which will be put into application in 2024, extends the railway control logic to the low-altitude domain. Through the integrated network of air, space and ground, it coordinates unmanned aerial vehicles and trains to share the transportation corridor. Material innovation is also pushing for change: the new type of optical fiber composite signal cable using g. 657. A2 fiber bending, bending radius reduced to 5 milímetros, transmission loss < 0.18 dB/km, make signal delay is reduced to nanoseconds. The use of environmentally friendly halogen-free flame-retardant sheath materials reduces the combustion toxicity index of cables by 90% compared with traditional PVC.

Proveedor

Industrias pesadas Co. de Luoyang Fonyo., Limitado,Fundada en 1998, es un fabricante de piezas fundidas para ferrocarriles. Nuestra fábrica cubre un área de 72,600㎡, con más de 300 empleados, 32 tecnicos, incluido 5 ingenieros superiores, 11 ingenieros asistentes, y 16 Técnicos. Nuestra capacidad de producción es 30,000 toneladas por año. Actualmente, Producimos principalmente fundición., mecanizado, y montaje para locomotora,automotor,trenes de alta velocidad, equipo de minería,energía eólica,etc. Nuestros productos han sido exportados a Rusia, los estados unidos, Alemania, Argentina, Japón, Francia, Sudáfrica,Italia y otros países..
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