smartDrive

Description

The smartDrive is a rugged, Linux-based quad-core edge computing device for demanding mobile and stationary applications, e.g. in rail, commercial vehicles, construction and agricultural machinery, or industrial plants. It combines a powerful application processor with cellular (LTE), GNSS, WLAN/Bluetooth, and extensive CAN, serial, digital, and analog interfaces in an IP67-protected housing.

The device runs optiMEAS Yocto Linux with smartCore. This allows the smartDrive to be fully connected to optiCLOUD.

Key features:

• Quad-core application processor at 1.6 GHz, optional NPU (up to 2.3 TOPS) and GPU
• optiMEAS Yocto Linux with smartCore, fully connectable to optiCLOUD
• LTE Cat4 with UMTS/GSM fallback, GNSS receiver (GPS/GLONASS/Galileo/BeiDou), optional WLAN/Bluetooth
• 4x CAN interfaces (optionally usable as CAN-FD), 12 configurable digital I/Os, 4 analog inputs, RS232/RS485
• Programmable 3-axis accelerometer, optional gyroscope
• Housing protection class IP67 / IP6K9K, operating temperature -40 °C to +75 °C
• Optional security features: High Assurance Boot (HAB) and TPM 2.0

optiMEAS reserves the right to make changes and is not liable for errors regarding this and all further data, descriptions, or examples provided for this product.

Hardware

Processor and memory

Parameter	Remark
Application processor	Quad-core Cortex-A53, 64 bit, 1.6 GHz, additional Cortex-M7 (low-power domain)
NPU	optional, up to 2.3 TOPS
GPU	optional, OpenVG 1.1, G2D, OpenGL® ES 3.1, Vulkan®, OpenCL™ 1.2 FP
RAM	2 GB LPDDR4 (optional up to 4 GB)
Flash (eMMC)	8 GB (optional up to 32 GB)
Flash (NAND)	1 GB SLC
Removable storage	microSD
Storage available to user	approx. 950 MB RAM; approx. 5.1 GB (8 GB eMMC) or 13.5 GB (16 GB eMMC), approx. 800 MB NAND flash
Operating system	optiMEAS Yocto Linux with smartCore, fully connectable to optiCLOUD
Security	HAB (High Assurance Boot); optional TPM 2.0 (ISO/IEC 11889)

Cellular (LTE / UMTS / GSM)

Parameter	Remark
Technology	LTE Cat4 with UMTS/HSPA+ and GSM/GPRS/EDGE fallback
LTE-FDD	B1/B2/B3/B4/B5/B7/B8/B12/B13/B18/B19/B20/B25/B26/B28
LTE-TDD	B38/B39/B40/B41
UMTS	B1/B2/B4/B5/B6/B8/B19
GSM	850/900/1800/1900 MHz
Data rate LTE-FDD	max. 150 Mbit/s (DL), max. 50 Mbit/s (UL)
Data rate LTE-TDD	max. 130 Mbit/s (DL), max. 30 Mbit/s (UL)
Data rate UMTS	DC-HSDPA max. 42 Mbit/s (DL), HSUPA max. 5.76 Mbit/s (UL)
GPRS	Multislot class 33
Transmit power	2.5 W (GSM850/EGSM900), 1.8 W (GSM1800/1900), 2.1 W (WCDMA), 2.8 W (LTE)
SIM	integrated mini-SIM holder (flip type), 3 V. Only regular mini-SIM cards must be used, not micro-/nano-SIM cards cut down to size.

GNSS

Parameter	Remark
Receiver	72-channel, concurrent reception of GPS, GLONASS, QZSS, BeiDou, Galileo E1B/C
SBAS	WAAS, EGNOS, MSAS, GAGAN
Update rate	up to 10 Hz (5 Hz with concurrent reception of multiple satellite systems)
Accuracy	2 m CEP
Signal acquisition	cold start 26 s, warm start < 1.5 s
Datum	WGS-84
Sensitivity	tracking/reacquisition -167 dBm, cold start -148 dBm
Active antenna supply	+3.0 V @ 30 mA, with short-circuit and open-circuit detection

Sensors

The smartDrive features a programmable 3-axis accelerometer (measuring range ±2 g/±4 g/±8 g/±16 g), which also serves as a wake-up source from standby/off. An optional 3-axis gyroscope (±125/±250/±500/±1000/±2000 dps) with a data rate of up to 416 Hz is additionally available.

An internal temperature sensor measures the housing's internal temperature in the range -40 °C to +75 °C (accuracy ±5 °C). It is not suitable for measuring ambient temperature.

The system time is provided by the CPU system clock as well as a battery-backed RTC (backup duration 10 years). When leaving OFF/STANDBY, the CPU system time is automatically taken over from the RTC.

Power supply and battery backup

Parameter	Remark
Supply voltage	9 to 36 V DC (nominal voltage 24 V)
Reverse polarity / overvoltage protection	yes, at the voltage input
External fusing	20 A (to be provided externally by the user)
Current draw @ 24 V, RUN	51.95 mA
Current draw @ 24 V, RUN + GSM in call + Ethernet	145 mA
Current draw @ 24 V, STANDBY	14.20 mA
Current draw @ 24 V, OFF	0.67 mA
RTC/GNSS backup battery	fixed installation, non-rechargeable, backup duration 10 years

The device has the operating states No Power, OFF, STANDBY, and RUN. From OFF and STANDBY, the device can be brought back to the RUN state via configurable events (motion, digital inputs, RS232 reception, CAN-FD, Ethernet, Bluetooth, GSM).

Housing and mechanics

Parameter	Remark
Dimensions (W x L x H)	188 x 149 x 63 mm
Mounting hole pattern	165 x 66 mm, 4 x Ø 7 mm (M4)
Weight	699 g ± 5 g (without backup battery), 878 g ± 5 g (with backup battery)
Material	glass-fiber reinforced plastic, anodized aluminum
Protection class	IP67 / IP6K9K (protection against dust and water)
Operating temperature	-40 °C to +75 °C (GSM off), -30 °C to +75 °C (GSM on); with optional Li-Ion battery: -20 °C to +60 °C (battery operation), 0 °C to +45 °C (charging)
Storage temperature	-40 °C to +85 °C
Mounting	any orientation, 4 mounting holes at the housing ends

Connector interfaces

All external connectors are located on the front of the housing. The Bluetooth and WLAN antennas are installed internally and do not require an external connector.

Designation	Connector
MACHINE	35-pin main connector (power supply, CAN, digital/analog I/Os, serial)
ETHERNET	M12 D-coded (100BASE-T1 or 100BASE-TX, optional)
MAIN LTE / DIV LTE (optional)	FAKRA, cellular antenna connector
GNSS	FAKRA, GNSS antenna connector
BT / WiFi (optional)	FAKRA or internal antenna

"MACHINE" main connector (35-pin)

The main connector provides the power supply, 4 CAN (optionally CAN-FD) and RS232 interfaces, as well as digital and analog I/Os.

Connector	Type
Receptacle on device	TE 776164-1 (35-pin)
Mating connector	TE 776164-1
Crimp contacts	TE 770520-1

Pin	Signal	Type / Function
1	V_OUT (5V)	Voltage output, 4.5–5.2 V, max. 900 mA
2	ON/OFF	Input: leave open = ON, switch to GND = OFF
3	AIN2	Analog input
4	AIN3	Analog input
5	CANH1	CAN bus 1, high
6	CANL1	CAN bus 1, low
7	CANH2	CAN bus 2, high
8	CANL2	CAN bus 2, low
9	CAN1 TERM	120 Ω termination resistor for CAN bus 1
10	CAN2 TERM	120 Ω termination resistor for CAN bus 2
11	CANH4	CAN bus 4, high
12	CANL4	CAN bus 4, low
13	GND	Ground
14	GND	Ground
15	AIN0	Analog input
16	DIO-0	digital I/O (input/output)
17	DIO-1 / AIN1	digital I/O or analog input (multiplexed)
18	DIO-2 / CAN3L	digital I/O or CAN bus 3, low
19	DIO-3 / CAN3H	digital I/O or CAN bus 3, high
20	DIO-4	digital I/O (input/output)
21	DIO-5	digital I/O (input/output)
22	DIO-6 / iButton	digital I/O or 1-Wire iButton bus (multiplexed)
23	DIO-7	digital I/O (input/output)
24	V_IN	Power supply, 9–36 V DC
25	DIO-8 (high-side)	digital output, high-side, max. 1 A
26	DIO-9 (high-side)	digital output, high-side, max. 1 A
27	TXD-1	RS232, transmit line
28	RXD-1	RS232, receive line
29	RTS-1	RS232, handshake
30	CTS-1	RS232, handshake
31	TXD-2 / RS485A	RS232, transmit line, or RS485-A (factory option)
32	RXD-2 / RS485B	RS232, receive line, or RS485-B (factory option)
33	DIO-10	digital I/O (input/output)
34	DIO-11	digital I/O (input/output)
35	CAN4 TERM	120 Ω termination resistor for CAN bus 4

note

Some pins have multiple assignments (multiplexing) and cannot be used simultaneously: AIN1/DIO-1, DIO-2/DIO-3 with CAN3, DIO-6/iButton, as well as DIO-1 with RS485 on UART2 (RXD-2/TXD-2). The active function is configured in software.

Power supply

Pin	Signal	Min	Max
24	V_IN	9 V	36 V
13 / 14	GND	–	–
2	ON/OFF	OFF: 0–0.5 V	ON: leave open

The supply line is protected against reverse polarity and overvoltage; external fusing of 20 A must be provided. The V_OUT output (pin 1) provides up to 900 mA at 5 V, e.g. for powering connected sensors.

Digital inputs/outputs (DIO0 – DIO11)

All 12 digital channels can be individually configured as input or output and are not TTL-compatible; they tolerate input voltages up to 50 V.

Property	Remark
Input impedance	180 kΩ (DIO-0: 220 kΩ, DIO-6: 1 kΩ pull-up to +5 V)
Output DIO0–DIO7, DIO10, DIO11	Open-collector/open-drain, up to 50 V, max. 200 mA (low-side)
Output DIO8, DIO9	High-side switch against V_IN, max. 1 A
Wake-up function	any input can be configured as a wake-up source from standby/OFF
Counter function	any input can be used as a 32-bit counter (odometer) up to 3 kHz

For inductive loads (e.g. relays) on the outputs, a freewheeling diode must be provided to limit the switch-off voltage spike.

Analog inputs (AIN0 – AIN3)

Parameter	Remark
Resolution	12 bit
Measuring range	0–5.12 V (5 mV/bit) or 0–30.72 V (30 mV/bit), switchable in software
Accuracy	±1 % typ. at 25 °C
Input impedance	110 kΩ (AIN1: 68 kΩ)

CAN bus

Parameter	Remark
Number	4x CAN, optionally usable as CAN-FD per bus
Bit rate	1 Mbit/s (arbitration), 2 Mbit/s (data phase); optionally CAN3/CAN4 with 5 Mbit/s data phase
Termination resistor	internally switchable (120 Ω) via CANx_TERM pins, to be connected to the CANL of the respective bus

Ethernet (M12 D-coded, optional)

The optional M12 D-coded Ethernet is available either as Single Pair Ethernet (100BASE-T1) or as classic 10/100BASE-TX.

Pin	Signal (100BASE-T1)	Signal (100BASE-TX)
1	TRX-P	TX+
2	–	RX+
3	TRX-N	TX-
4	–	RX-

Connector	Type
Receptacle on device	M12, D-coded, 4-pin, female
Mating connector	M12, D-coded, male

When using the 100BASE-T1 variant, a media converter to 100BASE-TX is required to connect to standard Ethernet. Once connected, SSH access is available by default at IP 192.168.10.1, port 22, with the user debian.

USB 3.0 Type A

The USB connector (top side) supports mass storage devices.

Pin	Signal	Function
1	VBUS	+5 V
2	D-	Data -
3	D+	Data +
4	GND	Ground
5	StdA_SSRX-	SuperSpeed receiver -
6	StdA_SSRX+	SuperSpeed receiver +
7	GND DRAIN	Signal ground
8	StdA_SSTX-	SuperSpeed transmitter -
9	StdA_SSTX+	SuperSpeed transmitter +

Connector: USB Type A, mating connector Type A (male), max. current load 900 mA.

Antenna connectors

Connector	Connector type	Remark
MAIN LTE / DIV LTE (optional)	FAKRA, male, coding D (Bordeaux)	Impedance 50 Ω
GNSS	FAKRA, male, coding C (blue)	Impedance 50 Ω, active antenna required (+3.0 V @ 30 mA, recommended gain 15 dB, 1575.42 MHz, VSWR max. 2.0:1)
WiFi / Bluetooth (optional)	internal	no external antenna required

Only sealed FAKRA connectors must be used to maintain the IP67 protection of the antenna connections.

Card slots and status LEDs (top side)

Under a screwed-on, transparent cover (2 screws, Torx T20, tightening torque 1.3 Nm) are the mini-SIM and microSD card holders as well as the internal battery connector for the optional backup battery.

Holder	Type	Remark
Mini-SIM	flip-type holder	3 V and 1.8 V SIM cards
microSD	flip-type holder	additional storage

Four status LEDs on the top side indicate the operating state:

LED	Color	Meaning
RADIO	yellow	lights up when an internet connection is active, regardless of whether it is established via the cellular modem or via Ethernet/network
PWR	green	lights up when the device is powered on
STATE	red	blinks at 1 Hz as long as the smartCore process is running without errors; if the LED does not blink, an error is present
GPS	orange	lights up continuously when a valid GPS signal is received; requires a GPS module entered in the smartCore configuration

Technical data (summary)

Parameter	Value
Processor	Quad-core Cortex-A53, 1.6 GHz
RAM	2 GB LPDDR4 (up to 4 GB)
eMMC	8 GB (up to 32 GB)
Supply voltage	9–36 V DC
Protection class	IP67 / IP6K9K
Dimensions (W x L x H)	188 x 149 x 63 mm
Weight	699 g / 878 g (with backup battery)
Operating temperature	-40 °C to +75 °C (GSM off) / -30 °C to +75 °C (GSM on)
Storage temperature	-40 °C to +85 °C
Cellular	LTE Cat4, UMTS, GSM/GPRS/EDGE
GNSS	GPS, GLONASS, BeiDou, Galileo, QZSS
CAN	4x CAN (optionally CAN-FD)
Digital I/Os	12x configurable
Analog inputs	4x, 12 bit
Serial	2x RS232 (2nd port optionally RS485)
Ethernet	optional, M12 D-coded, 100BASE-T1 / 100BASE-TX
USB	1x USB 3.0 Type A
Main connector	35-pin, TE 776164-1