DTECH Intelligent Traffic Solution: A Full-Chain Networking Guide from Signal Acquisition to

Command Center

The DTECH Intelligent Traffic Solution is a full-chain video transmission and management system designed for highways, tunnels, urban roads, and traffic command centers. It follows a six-stage architecture — signal acquisition → industrial aggregation → fiber backbone transmission → platform management → visualization display → operations & maintenance — to carry signals from front-end devices such as traffic cameras, electronic police, and variable message signs through industrial switches and fiber transceivers over long distances to the command center, where fiber HDMI extenders and video walls enable centralized display and remote operation. Its core advantages include 1080P@60Hz HD transmission, industrial-grade 24/7 stable operation, fiber transmission distances of up to 80km, and platform-based centralized management, making it suitable for six major scenarios: highway monitoring, tunnel monitoring, urban road monitoring, smart traffic signal control, parking lot management, and traffic command centers.

2.System Architecture: A Detailed Walkthrough of the Six Stages

The DTECH system architecture follows a clear signal flow logic, structured in the order: Acquisition → Aggregation → Transmission → Management → Display → Operations.

2.1 Stage 1: Signal Acquisition Layer

 Front-end devices are the source of all signals in the system. Common devices include:

• ♦Traffic cameras (primary road monitoring device)
• ♦Electronic police (traffic violation capture)
• ♦License plate recognition devices
• ♦Traffic signal controllers
• ♦Variable message signs (e.g., road work ahead, slow down alerts)
• ♦Toll collection systems

Signals from this layer are transmitted to the next stage via CAT6 cable, RS485, or Ethernet.

2.2 Stage 2: Industrial Aggregation Layer

Front-end signals first converge at industrial switches located at intersections or cabinets — the first checkpoint for ensuring system stability. Industrial switches come in two types:

• ♦Fast/Gigabit Ethernet selectable: Suitable for standard road monitoring points, offering stable transmission and strong anti-interference.
• ♦SFP fiber port equipped: Suitable for points requiring direct connection to the fiber backbone, reducing intermediate conversion steps.

2.3 Stage 3: Fiber Backbone Transmission Layer

Long-distance transmission from roadside cabinets to the traffic command center relies on fiber transceivers for opto-electrical signal conversion, with single-mode/multi-mode fiber options to meet different distance requirements. This stage is key to solving the industry's core "transmission distance" pain point.

2.4 Stage 4: Platform Management Layer

After signals reach the command center machine room, they pass through:

• ♦Core switches (data aggregation hub)
• ♦Traffic management platform (unified software-layer management)
• ♦NVR/storage servers (video storage)
• ♦Decoders/control PCs (signal decoding and scheduling)

This layer is the "brain" of the entire system, determining whether multiple signals can be efficiently scheduled and stored long-term.

2.5 Stage 5: Visualization Display Layer

Signals processed by the management platform are transmitted via fiber HDMI extenders (TX transmitter + RX receiver) to the video wall controller, ultimately enabling multi-view, split-screen, and windowed display on the large video wall for real-time traffic monitoring by command center staff.

2.6 Stage 6: Operations & Maintenance Layer

The final stage closes the operational loop, including:

• ♦Remote monitoring (real-time PC viewing)
• ♦Data management (cloud/local storage management)
• ♦Alert push notifications (real-time abnormal event alerts)
• ♦Mobile access (view anytime via phone/tablet)

These six stages form a complete closed loop — a bottleneck at any single stage directly impacts the decision-making efficiency of the traffic command center.

3.Core Product Specifications and Selection Comparison

Equipment selection logic varies significantly across different scenarios and budgets. Below is a comparison reference for DTECH's four core product lines:

3.1 Short-Distance vs. Long-Distance Transmission: How to Choose?

• ♦Within 100 meters: Direct CAT6 cable connection is preferred — low cost and easy deployment.
• ♦Over 100 meters, or cross-intersection/cross-region transmission: A fiber transceiver or SFP-equipped industrial switch solution is recommended, supporting up to 80km and immune to electromagnetic interference.

3.2 Industrial Switch vs. Standard Commercial Switch

3.3 Single-Mode vs. Multi-Mode Fiber

• ♦Single-mode fiber: Suitable for long-distance transmission (tens of kilometers), the preferred choice for highways and cross-region traffic command systems.
• ♦Multi-mode fiber: Suitable for medium-to-short distances (hundreds of meters to a few kilometers), relatively lower cost, ideal for transmission between urban road nodes.

4.Six Application Scenarios: Practical Reference