DG-PID21-R is a rugged purpose-built stand-alone IP connected Intelligent Passenger Information Display for bus applications which require high service reliability and easy integration with other in-vehicle systems. The PID21-R bases on a low power i.MX8 CPU which can include Duragon’s proprietary firmware or third party PID-system Client Software. The intelligent display can deliver media content combining video, animations with static or changing images on the HD resolution display. Route and operational service information can be combined with advertising content. Ethernet is used for integration with other onboard systems. Display content is not streamed over Ethernet, only control information is sent over the network. Media is stored in the PID21-R and it can be updated over the Ethernet backbone. The internal Ethernet switch with its two external ports, enables the connection of multiple PID21-R displays in series. In case there is a HW or other internal failure, the bypass relays will automatically disengage a faulty device from the Ethernet network.

Functionality is optimized in the PID21-R intelligent display. A high brightness and contrast LCD display supports full HD resolution. The internal single control board includes a i.MX8 CPU, supervised by a microcontroller which manages all the display’s functionality including safe power on-off, secure booting, backlight brightness, temperature monitoring and event logging. The integrated widerange railway grade power supply can reliably directly connect to a 24VDC nominal power supply.

Our design approach reduces lifecycle costs and migration challenges. The technology of the PID21-R is based on commercial standards, Industrial-Grade components and a design leveraging 20+ years of paradigm experience in vehicle systems design.

Purpose built – The DG-PID21-R Passenger Information Display’s architecture, functionality, enclosure, connectors and structure are designed for high availability and 24/7 operating Ethernet connected bus or tram applications. The DG-PID21-R display integrates a proprietary Freescale i.MX8 graphics control computer, vehicle PSU, management microcontroller and Dual-Port Ethernet switch with Bypass Relays.

Resistant – DG-PID21-R is designed to withstand the mechanical, electrical and environmental stress encountered in bus installations in arctic and tropical conditions.

Wide temperature range – A wide operating temperature range ensures reliable continuous operation from -25~ +55°C. The system is completely fanless and features conduction cooling and an internal temperature monitoring and thermal protection system.

Compliance – The DG-PID21-R display is compliant with
-EN50155, EN61373 (Shock and vibration)
-IP52 according to IEC 60529

Connectivity – Comprehensive set of connectivity interfaces
-Dual 10/100 MBit Ethernet Ports with safety bypass relays
-Power management CAN-bus
-Service USB and Ethernet port under service panel

Functionality – The PID21-R is fully autonomous in its operation. This device can perform signage, interfacing over Ethernet with other systems on the bus. The dual Ethernet ports support “Daisy-chain” operation, reducing cabling and In-Vehicle Ethernet switch ports. Media content is stored locally and can be updated over the Ethernet interface from an onboard Single Control Unit or Telematics Server.

The system bases on open Linux OS and high level rapid graphical development tools are available. The internal uC ensures safe start-up with system health monitoring as well as thermal throttling of the CPU and the backlight.

General features:

  • 21.5” HD LCD display
  • LED backlight with SW control
  • Brightness 500 nits, contrast 1000:1
  • Dual 10/100Mbit switched Ethernet ports
  • Safety Bypass relays on Ethernet ports
  • Low power i.MX8 Linux Display Controller
  • Autonomous operation, local media storage
  • 8-36VDC 12/24VDC Vehicle power supply
  • Fanless, conduction cooled, -25..+55°C op.
  • Diagnostics and system management uC