The in-vehicle local area network system consists of three main components: the cab network section, the onboard LAN section, and the rear cab network section. The cab network section includes the onboard wireless network unit (comprising wireless devices and an onboard antenna), the onboard network switch, and the onboard video controller. Similarly, the rear cab network section also features the same components: the onboard wireless network unit (with wireless devices and an onboard antenna), the onboard network switch, and the onboard video controller. All cameras and displays within the车厢 are connected to the onboard LAN via the network switch.

The Passenger Information System (PIS) is a system that utilizes robust network technology, multimedia transmission techniques, and advanced image-display technologies to deliver specific information to passengers at designated locations and timeframes along subway lines. Additionally, it enables the seamless transmission of passenger information to operations management personnel. The PIS supports a wide range of functionalities, including program production, provision of subway-related operational and informational services, broadcast programming, content relay, real-time multimedia news insertion and distribution, intelligent signal broadcasting, data transmission, and even video surveillance capabilities.

System Overview

The Passenger Information System (PIS) has gained increasing popularity as related technologies like WLAN-based mobile communications continue to mature. It transforms once-dull, closed-off train compartments into smart, entertaining, and vibrant spaces—enhancing both the operational safety of trains and boosting passenger comfort. As the most direct information exchange platform between metro companies and passengers, the PIS not only displays essential text-based information such as boarding guidelines and train schedules within the carriages but also delivers real-time updates like stock market data, news, live sports events, and advertisements. In addition, in the event of emergencies—such as fires, congestion, or terrorist attacks—the system can provide dynamic, real-time evacuation alerts to ensure passenger safety.

Project Proposal

The in-vehicle local area network system consists of three main components: the cab network section, the onboard LAN section, and the rear cab network section. The cab network section includes the onboard wireless network unit (consisting of wireless devices and an onboard antenna), the onboard network switch, and the onboard video controller. Similarly, the rear cab network section also comprises the same components: the onboard wireless network unit (with wireless devices and an onboard antenna), the onboard network switch, and the onboard video controller. All cameras and displays within the车厢 are connected to the onboard LAN via the network switch.

Topological Structure

Product Advantages

The IES3009 devices can be configured into self-healing ring or chain networks. In practical applications, if a section of the line experiences a fault, the network automatically switches over and restores itself. Additionally, the IES3009 supports power-off protection: when one node in the network loses power, the ES3009 unit automatically bypasses the faulty segment and reroutes traffic, ensuring uninterrupted operation of the remaining nodes. Furthermore, this product model has successfully passed EMC tests specific to the rail transit industry, making it well-suited for handling diverse and challenging real-world environments. For the highly demanding rail transit sector, where stability is critical, the IES3009 series provides users with exceptionally reliable communication security and peace of mind.

Product Description

Product Features

• Supports up to 9 100-Mbps interfaces, configurable as 4 fiber/4 copper, 3 fiber/6 copper, or 2 fiber/4 copper. The 100-Mbps optical interfaces are available in SC, ST, or FC connectors.
• Supports the IEC62439 MRP international standard ring network redundancy protocol, with redundancy protection time less than 50ms, supporting up to 200 nodes, and enabling tangent-ring and coupled-ring networking configurations.
• Supports RSTP/STP/MSTP (IEEE 802.1w/d/s) redundancy protocols
• Flexible networking options allow for the creation of various topologies, including ring networks, chain networks, star networks, and tangent rings.
• Supports IGMP Snooping and GMRP for multicast packet filtering.
• Supports port-based VLAN, IEEE 802.1Q VLAN, and GVRP protocols, enabling seamless network management. Enhance decision-making with QoS—IEEE 802.1p/1Q and TOS/Diffserv mechanisms.
• Supports SNMPv1/V2c/V3 for multi-level network management, and leverages RMON to enhance network monitoring capabilities.
• Bandwidth management optimization with precise broadcast storm control
• Port loop protection feature effectively prevents network loop storms.
• Built-in diagnostic features for convenient network fault analysis and troubleshooting
• Port locking allows access only to authorized MAC addresses.
• Supports robust ACLs, with hardware-accelerated L2-L7 layer data filtering.
• Supports multi-port mirroring for online debugging
• Abnormal events automatically trigger an alarm via a relay.
• Product configuration and debugging can be performed via a web browser, as well as through Telnet/serial console.
• Superior electromagnetic compatibility and immunity compared to industrial-grade standards, ensuring reliable performance even in harsh electromagnetic interference environments.
• The power input level can be flexibly configured and selected, with redundant DC power inputs available.
• Operating temperature: -40°C to +85°C
• DIN rail-mounted, wall-mountable
• IP40 Protection Rating

Port

100-Megabit Ethernet Port: 10/100Base-T(X) Adaptive Ethernet RJ45 Interface

100-Megabit Optical Port: Optional SC/ST/FC connectors

CONSOLE port: RJ45

Alarm port: 3-pin, 3.81mm pitch, plug-in terminal

Technology

IEEE 802.3, IEEE 802.3u, IEEE 802.1d, IEEE 802.1w, IEEE 802.1p, IEEE 802.1q

Exchange attributes

Backplane switching bandwidth: 8.8 Gbps

MAC Address Table: 8K

Cables

Twisted pair cable: 0–100 m (using standard CAT5 or CAT5e network cables)

Multimode Fiber Optic: 1310 nm, 2 km (100 Mbps)

Single-mode fiber optics: 1310nm, 20 km / 40 km / 60 km (100 Mbps); 1550nm, 60 km / 80 km (100 Mbps)

Power supply

Input voltage: 24VDC (18–36VDC), 48VDC (36–72VDC), 110VDC (66–154VDC), 220VAC/DC (132–300VA / 176–400VDC)

Connection terminals: 5-pin, 5.08mm pitch, plug-in type

Power < 9.7 W

Redundancy Protection: Supported (24VDC, 24VDC)

Mechanical Structure

Case: Textured Surface Cooling Technology, Fanless

Protection rating: IP40

Installation methods: DIN rail mounting or wall-mounting

Case dimensions (W × H × D): 136mm × 69mm × 125mm

Weight: 2 kg (including packaging)

Environment

Operating temperature: -40°C to +85°C

Storage temperature: -40°C to +85°C

Relative humidity: 0–95%, non-condensing

Warranty

MTBF: 35 years

5-Year Warranty

Meets the standard:

IEC61000-4-2 (ESD): ±8kV contact discharge, ±15kV air discharge

IEC61000-4-3(RS): 10 V/m (80–1000 MHz)

IEC61000-4-4 (EFT): Power lines: ±4 kV; Data lines: ±2 kV

IEC61000-4-5 (Surge): Power line: ±4 kV/cm ±2 kV/dm; Data line: ±2 kV

IEC61000-4-6 (RF Conducted): 3V (10 kHz–150 kHz), 10V (150 kHz–80 MHz)

IEC61000-4-8 (Power Frequency Magnetic Field): 100 A/m (continuous), 1000 A/m (for 1 to 3 seconds)

IEC61000-12/18 (Surge Wave): 2.5 kV/CM, 1 kV/DM

IEC61000-4-10 (Damped Oscillation): 30 A/m

IEC61000-4-16 (Common-mode Conduction): 30V (cont.), 300V (1s)

FCC CFR 47 PART 15 / EN55022: Class A & B

IECC61000-6-2 (General Industrial Standard), EN50121-4 (Railway Applications)

Order Information

Optional model port power

100-Megabit optical port, 100-Megabit electrical port

WitNet IES3009-2S/M-4T 2 (FC/ST/SC) 4, 24VDC, 48VDC

(Supports redundant power supplies)

110VDC, 220VAC/DC

WitNet IES3009-2S/M-6T 2 (FC/ST/SC) 6

WitNet IES3009-4S/M-4T 4 (FC/ST/SC) 4

WitNet IES3009-3S/M-6T 3 (FC/ST/SC) 6

WitNet IES3009-8T-8