The DG-EL1696-P5B is a rugged LED passenger information display targeting bus installations. This display is purpose-built with protected and EMC filtered RS-485 and CAN 2.0 interfaces and an automotive grade power supply, which can directly connect to the vehicle’s 24VDC battery system. The electronics of the display is full SMD to increase mechanical reliability. The display is based on a 32-bit CORTEX-M3 microcontroller with dedicated firmware, which can be customized to meet the specific requirement of each project, including custom graphics elements and language support. Error and diagnostic codes are available to monitor the health of the display and its correct operation. Constant current LED sink drivers are used to drive high brightness SMD LED components to increase the optical performance and ruggedness of the display. The LED matrix brightness can be adjusted from 0 to 100% under software control or automatically adjusting to daylight conditions. The brightness of the LEDs is thermally throttled to protect components at high ambient temperatures. The display base is black for improving contrast. The LED area is covered by a tamper proof safety glass. The LED display is based on boards which include 16 x 32 LEDs, the master board connects to the slave boards with board-to-board connectors. This modular approach enables the adaptation to different LED matrix sizes. Each board has its own local tightly regulated power supply for improved power distribution. The RS-485 interface or CAN 2.0 interface can be used for host communication using a HEX-format based protocol for commands and controls. The host can interrogate display status including supply voltage, internal temperature, ambient light level as well as the diagnostic status of individual LEDs is the complete matrix. A LED diagnostic check is performed when power is applied to the display.
Our design approach reduces lifecycle costs and migration challenges. The technology of the DG-EL1696-P5B is based on commercial standards using Industrial-Grade components and design principles leveraging 20+ years of systems design paradigm experience in bus and automotive installations.
Purpose built – The architecture, functionality, enclosure, connectors and structure of this display unit is designed for 24/7 operation in bus transportation applications.
Resistant – The Display Unit 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~ +70°C.
Mechanical design – The display frame is based on an extruded aluminum profile with a scratch resistant safety glass display cover. The enclosure is sealed up to IP52 on all sides. Strengthened M5 mounting holes are located on both sides for easy installation. A black base color enhances LED contrast.
Compliance – The Display Unit is designed for compliance with:
-EN50155 and EN50121 mandatory parts
-EN61373 shock and vibrations
Interface – The DG-EL1696-P5B interfaces with onboard passenger information system controller using either RS-485 serial interface or CAN 2.0. The display can receive message commands and display bitmap, ASCII or custom characters on the 16 x 96 dot LED matrix.
Firmware and Protocol – The internal CORTEX-M3 controller receives commands using an ASCII hexadecimal format. The firmware can support static and scrolling messages in most languages. Special images can be displayed in bitmap mode, where every LED can be controlled independently to show graphics symbols. The brightness of the LED matrix can automatically adjust to ambient lighting conditions or controlled by host systems using commands. The LED display can return error codes as well as status information to the system host.
- LED display with 16 x 96 resolution
- Matrix density P5 (5mm pitch)
- Color 590nm AMBER
- LED typical brightness 1000mcd
- Wide viewing angle and clear readability
- Uniform optical performance for matrix
- Internal LED and system diagnostics
- RS-485 and CAN 2.0 Interface
- Vandal proof safety glass
- 24VDC nominal power input
- Rugged aluminum enclosure