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OBU-352 產品說明書

95±0.5 103±0.5 31.2±0.5
OBU-352 Photo and Dimensions (mm)
  • OBU-352EC C-V2X on-board unit,V2Xcast® ETSI C-ITS stack and SDK
  • OBU-352ED DSRC-V2X on-board unit, V2Xcast® ITS-G5 stack and SDK
  • OBU-352UC C-V2X on-board unit, V2Xcast® IEEE 1609/SAE J2735 stack and SDK
  • OBU-352UD DSRC-V2X on-board unit, V2Xcast® IEEE 1609/SAE J2735 stack and SDK

OBU-352 is the most advanced V2X on-board unit featuring a global V2X solution; the hardware supports either C-V2X or DSRC-V2X communication standards with appropriate V2X stack embedded, reducing the cost and complexity for global deployments.

  • Secured V2X communication supports SCMS or CCMS including the V2X PKI certificate management and the private key operation on the embedded Hardware Security Module (eHSM).
  • Antenna detection and diagnose supported.
  • Wide-ranged -40°C ~ +85°C operating temperature and detachable V2X/GNSS antennas support flexible aftermarket retrofit or field deployment.
  • Innovative software-defined, OBU can flexibly shift between DSRC-V2X or C-V2X with one V2X stack (IEEE 1609 or ITS-G5 V2X standard) through firmware update.

V2Xcast® Firmware

Unex’s V2Xcast®stack software/SDK/API Customer IP base - TCP/UDP V2V, V2I, V2P & Sensor Fusion Applications Customer’s Application Layer Customer’s Facility Layer User API Interface 802.11p RF technologyETSI ITS-G5 stackCCMS PKI stackITS safety messages ED (Europe DSRC) LTE-V2X RF technologyETSI C-ITS stackCCMS PKI stackITS safety messages EC (Europe C-V2X) 802.11p RF technologyIEEE 1609 V2X stackSCMS PKI stackJ2735 safety messages UD (U.S DSRC) LTE-V2X RF technologyIEEE 1609 V2X stackSCMS PKI stackJ2735 safety messages UC (U.S C-V2X) configurations to simplify the operations forL3/L4 layers and focus on the domain-basedapplications SCMS/CCMS client implemented with HSMto automatically access V2X PKI servicesand maintain certificates management API Interface Hardware Abstraction Layer Networking & Transport Layer (L3/L4) WSMP WSA Networking & Transport Layer (L3/L4) GEO N/W BTP Message Layer ( SAE J2735) BSM TIM/RSM MAP/SPaT PSM Others….. Message/Facility Layer CAM/DENM IVIM MAPEM/SPATEM VAM Others….. V2Xcast®& SDK
V2Xcast® Software Architecture Diagram

Software-defined Global V2X

Innovative software-defined design provides the highest application flexibility, the same OBU can flexibly shift between DSRC-V2X or C-V2X with one V2X stack (IEEE 1609 or ITS-G5 or C-ITS V2X standard) through firmware update to reduce the cost and complexity for global deployments.

V2Xcast®included V2Xcast®included Unex Products DSRC-V2X DSRC-V2X C-V2X FirmwareReflash FirmwareReflash

Remarks: For shifting requirements from DSRC-V2X to C-V2X on the same MAC address (vice-versa) V2X hardware, extra license fee would be required.

Applications

Vehicle retrofit aftermarket or field deployment

Standalone V2X OBU and develop the application software on OBU

As an external V2X modem: connect V2X OBU to vehicle’s existing application ECU through Ethernet and develop the application software

OBU Vehicle Computer TCU/ECU…etc.

Design reference for automotive production

Unique V2Xcast® software architecture supports various V2X applications. Multiple SDKs can be installed on collective ECUs, allowing advanced V2X sensor fusion applications on the existing central or edge ECUs of different generations of vehicle’s E/E architecture.

Middle right Front right Rear left Middle left Front left Front Central Core 3 Central Core 1 Central Core 2 V2Xcast@subscriber: C V2Xcast@subscriber: A V2Xcast@subscriber: B HD Map & RTK Cognition & Decision Sensor Fusion V2Xcast@Service Rear right
V2Xcast® Architecture Integration across ECUs

Specifications

Chipset
  • Autotalks® CRATON2 V2X communication processor
  • Autotalks® PLUTON2 V2X RF Transceiver
  • Embedded Hardware Secure Module (eHSM)
    • Dedicated ARM Cortex-M0 CPU
  • GNSS module
Operation System

Linux Yocto

System Service

RS-232 console interface (baud rate 115200 bps)

Antenna Detection/Diagnose

Supported

System Memory

512MB NAND, 256MB DDR3

Preloaded Firmware
  • OBU-352EC: V2Xcast® ETSI C-ITS stack including LTE-V2X (PC5), CAM/DENM, GN/BTP, Security, PoTi, *ETSI C-ITS standard over LTE-V2X is still draft only.
  • OBU-352ED: V2Xcast® ITS-G5 stack including IEEE802.11p, Facility Message, GN/BTP, DCC, Security, PoTi, C2C-BSP
  • OBU-352UC: V2Xcast® C-V2X stack including LTE-V2X (PC5), 1609.2, 1609.3, IEEE1609.2.1, SAE J2735, PoTi
  • OBU-352UD: V2Xcast® IEEE1609/SAE J2735 stack for 802.11p WAVE including 1609.2, 1609.3, 1609.4, IEEE1609.2.1, SAE J2735, PoTi
Development Tool

V2Xcast® SDK, including Tx/Rx, PoTi, J2735 or ITS-G5 compliant Message/Service and application example codes

Hardware Security
  • Dedicated ROM containing certified secure V2X signing firmware
  • Secure encrypted off-chip storage of private keys
  • Private material is inaccessible outside HSM
  • Capable of >110 signatures / second, with <9ms signing latency for ECDSA NIST P256 or ECDSA Brainpool P256R1
  • Line-rate ECDSA verification engine (>2500 ECDSA NIST P256 verifications / second)
  • Tamper detection*
V2X
  • Supported frequency band:
    • C-V2X: 5.895 ~ 5.925 GHz
    • DSRC-V2X: 5.850 ~ 5.925GHz
  • DSRC-V2X radio mode: 802.11p
  • C-V2X radio mode: 3GPP LTE-V2X Rel.14/15 PC5 sidelink 5.895 ~ 5.925 GHz
  • RF transmit power: max. +20dBm on antenna port, Class C RF spectrum mask compliant with margins
  • RF receive power: PER ≤ 10%/ -86 dBm, PER ≤ 10% -40 – +85 °C/ -82 dBm

Remarks: For legacy DSRC WAVE applications, (1) channel switch in 1609.4, (2) WSA broadcast, and (3) dual channel are not supported.

GNSS
  • Update rate: max. 10Hz
  • Sensitivity:
    • Acquisition: -146dBm
    • Navigation: -158dBm
    • Tracking: -162dBm
  • NMEA Standard: NMEA 0183
  • Accuracy: 1.5m (CEP50 with SBAS)
  • Supports GPS/GLONASS constellations*. SBAS like WAAS (US), is also supported.
External GNSS Support*(*. Support by project)

NMEA input interface

External Connector
  • One integrated 20-pin I/O interface
    • Power 9-42V DC
    • Reset
    • One RS-232 for Console (baud rate 115200 bps)
    • One RS-232 for external GNSS NMEA input
    • One 1PPS input
    • Two CAN
    • One USB with USB bus power
    • Two GPIOs
  • One Ethernet port
  • One USB Mini-B port
  • Two FAKRA Z RF port for V2X
  • One FAKRA C RF port for GNSS
On-Board Interface reserved
  • One Mini PCIe slot (for LTE module)*
  • One SIM slot*
  • LED headers
  • Boot strapping DIP switch
  • JTAG 7-pin header

(*. Support by project)

LED
  • STATUS
    • Start-up: Blinking Green
    • Operational: Solid Green
    • FW upgrade: Amber (R+G)
    • Fault: Red
  • PWR
  • 1PPS
  • EXT GNSS
  • LTE WWAN
  • LED0
  • LED1
Antenna
  • Two detachable FAKRA type Z V2X 5dBi Omni Dipole (for diversity)
  • One detachable FAKRA type C active GNSS antenna, cable length: 3 meters
Operation Voltage

DC 9-42V ± 5%

Power Consumption
  • 5V/USB power input: typical 0.53A/2.65W
  • 12V/auto. ACC power input: typical 0.25A/3.0W
ESD Protection

IEC/EN 61000-4-2 level 4

Vehicle Regulation RF Regulation
  • CE (Q1-2025), FCC Class B (after FCC validation), ISO7637-2 & ISO 16750-2 (Q1/2025)
  • E-Mark (Q1/2025)
Operation Temperature Range

Ambient: -40°C ~ +85°C

Operating Humidity

10% ~ 95%, non-condensing

Storage Humidity

Max. 95%, non-condensing

Housing

Aluminum plate, thickness: 1.0mm

Product Dimension

103mm (L) x 95mm(W) x 31mm (H)

Input Output Interface

20 pin Connector Ethernet USB Mini-B
Function Pin
Console (DCE) TX(I)
RX(O)
GND
Ext GNSS (DTE) Ext_GNSS_TX(O)
Ext_GNSS_RX(I)
Ext_1PPS(I)
GND
CAN0 CAN0_H
CAN0_L
CAN1 CAN1_H
CAN1_L
USB USB_DP
USB_DN
USB5V
GND
GPIO GPIO1
GPIO2
PWR POWER
RESET
GND

Pin Definition

10 20 11 1 20pin Connector
Pin Pin Name Type Description
1 POWER I 9-42V System main power
2 RESET I Reboot the device with rising edge
3 TX I Serial data from DTE
4 RX O Serial data to DTE
5 GND G Ground
6 CAN0_H I/O CAN0 High
7 CAN1_H I/O CAN1 High
8 USB_DP I/O USB Data +
9 USB_5V O 5V USB bus power
10 GPIO1 I/O GPIO
11 GND G Ground
12 EXT_1PPS I External 1PPS signal
13 EXT_GNSS_RX I Serial data from external GNSS module
14 EXT_GNSS_TX O Serial data to external GNSS module
15 GND G Ground
16 CAN0_L I/O CAN0 Low
17 CAN1_L I/O CAN1 Low
18 USB_DN I/O USB Data –
19 GND G Ground
20 GPIO2 I/O GPIO

Product SKU and Ordering Information

  • OBU-352EC C-V2X on-board unit,V2Xcast® ETSI C-ITS stack and SDK
  • OBU-352ED DSRC-V2X on-board unit, V2Xcast® ITS-G5 stack and SDK
  • OBU-352UC C-V2X on-board unit, V2Xcast® IEEE 1609/SAE J2735 stack and SDK
  • OBU-352UD DSRC-V2X on-board unit, V2Xcast® IEEE 1609/SAE J2735 stack and SDK

Package content

OBU-352EC/OBU-352ED/OBU-352UC/OBU-352UD

Optional Accessory & Application Diagram

EX-46: 20-pin cable assembly EX-47: I/O conversion board DC Power jack Console DE9(F) Ext GNSS DE9 (M) USB1 CAN0 DE9 (M) CAN1 DE9 (M) GPIO Reset Button
OBU optional accessory application example

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