DMS / Fatigue Sensor

Driver monitoring system / Fatigue sensor

Syrus can communicate with fatigue sensor accessories which help monitor driver's fatigue. Fatigue sensors work by analyzing a driver's facial features and their environment to generate audible alerts as well as capture a photo or video when the driver starts to doze off or feel drowsy. Together with Syrus you can get notified whenever one of these fatigue alerts are triggered and view the captured photo/video clip associated with each fatigue event.

General Overview

  • The way it works is that you connect one of the compatible fatigue sensors to the Syrus
  • Depending on which fatigue sensor you connected you will either configure Syrus to use the serial (rs232), can bus, or ethernet interfaces to obtain the fatigue sensor's data
  • Once connected and configured using the appropriate tool look at the fatigue sensor and simulate drowsiness
  • For the serial rs232 interface use the serial tab or the apx-serial tool to view data
  • For the ecu interface look at the ECU tab or the apx-ecu tool to list_parameters that start with the CAN_ID of the accessory (ex: 600_4.1_1)
  • For the ethernet interface look at the video tab or the apx-video tool to get the video status

Installation / Wiring Diagrams

Syrus 4 Datasheet with Pinout

Movon MDSM-7 Option A - via Ethernet (Includes video clips)


Movon MDSM-7 Option A

The video clips recording requires a firmware version for Movon's hardware of at least 0.3.04 or newer

Movon MDSM-7 Option B - via CAN bus


Movon MDSM-7 Option B

Read note below on installing a terminating resistor for CAN Bus accessories

Caredrive MR688B


Caredrive Fatigue Sensor

Installing a Terminating Resistor

Note that the impedance of the CAN bus must be 60 Ohms. To measure the impedance turn off the vehicle and make sure the multimeter is set to measure resistance (20Ω scale), and finally place the red and black probes on the CAN bus, it should be around 60Ω.

When connecting a single Movon device to the CAN bus the impedance of the bus changes to 120Ω, in order to drop it to the required 60Ω value a 120Ω resistor must be placed in parallel at the terminating end of the CAN bus wires of the Syrus 4G CAN High/CAN Low wires.

Any value lower than 60 Ohm indicates that there are probably more than two 120 Ohm bus termination resistors present. A value bigger than 60 Ohm typically indicates that there is at least one bus termination resistor missing or the bus terminators have a wrong resistance value.

Note: If you connect multiple accessories with terminating resistors, for example 2 Movon sensors, the impedance will measure out to be 60 Ohms, meaning you DO NOT have to add a resistor in this case.

The recommended resistances wattage depends on the type of vehicle, for 12V use at least a wattage of 0.5W, and for 24V use a wattage of at least 1W

Here are some sample resistances you can purchase online; EDGELEC EFR-W1D00-A:MF & KOA Speer MOS1CT528R121J

Accessory Comparison

DescriptionMovon MDSM-7Caredrive MR688BCipia-FS10
Captures photos of incidents✅*
Captures videos of incidents✅*🚫
Configure parameters like sensitivity and speaker volume remotely🚫
Driver fatigue warning/yawning
Driver fatigue alarm/drowsiness
Driver distracted
Driver absent/not detected
Driver disappeared🚫🚫
Driver changed🚫🚫
Driver identified🚫🚫🔲
Unknown driver🚫🚫
Driver on phone🚫
Driver smoking🚫
Tamper alert🚫
Fatigue sensor power ON🚫🚫
Fatigue sensor power OFF🚫🚫
Driving with no seatbelt🚫🚫
Camera blocked🚫
Zero speed detected🚫🚫
System diagnostic messages (bootup ok, bootup failure)🚫🚫
System diagnostic message camera loss of gps🚫🚫
System diagnostic message camera uncalibrated🚫🚫
  • Note that the Movon MDSM-7 is configured for either Photos or Videos, but not both.

✅ - Available and supported
🔲 - Available and not yet supported
🚫 - Not available

Guide: Cipia-FS10

The Cipia-FS10 will communicate via Wifi with Syrus 4. In order to get started make sure you download the latest apex OS version.

What you'll need:

  • 1 Syrus 4 device
  • 1 Cipia-FS10 device with installation kit
  • 1 Android phone for installing (Android v8 or newer)
  • 1 Micro SD card

Credentials you'll need

  • Cipia EyeSightInstaller mobile application
    • Email, Password, Server URL
  • Cipia-FS10 unit
    • Device password

Cipia Setup

Step 1

Connect an SD card to the Syrus and be sure it's formatted and detected, you can do this from the Management Tool -> System -> Storage section.

Step 2

Configure the Cipia's MAC address and UnitID (found on the Cipia's sticker) to the Syrus using the apx-ndm-cipia tool.

# Apex 22.47.1 or newer
$ sudo apx-ndm-cipia set --mac=A6:04:50:3C:DA:45 --id=e320290294

# Apex 22.28.1 - 22.47.0
$ sudo apx-video set --device=cipia_fs10 --mac=A5:53:0C:CB:DC:1D --id=e123456789

# Apex 22.27.1 or older
$ sudo apx-video set_mac --device=cipia_fs10 --mac=A5:53:0C:CB:DC:1D

Step 3

Create a video profile for Cipia in Syrus Cloud

To do this simply create a new video profile, add a camera, and select Cipia from the dropdown menu.



Note that once the Video profile is synchronized with the Syrus it automatically bring up the Syrus 4 hotspot. Thus you will lose wifi connectivity.

Step 4

Configure the hotspot settings on the Syrus using the apx-hotspot.

# set the SSID and  Password
$ sudo apx-hotspot set --ssid=syrushotspot --pass=syrus1234

Step 5

Download the configuration and settings file and edit the settings according to the hotspot values entered previously.

Configuration File: cipia_fs10.conf.json

Settings File: cipia_fs10.settings.json

    "WifiSettings": {
        "APModeEnable": true,
        "APPassword": "1234567890",
        "APSSID": "FS-WiFi",
        "Password": "syrus1234",    # hotspot password
        "SSID": "syrushotspot"      # hotspot ssid

Upload the Configuration and Settings file to the Syrus using Syrus Cloud upload functionality.

filepath to upload to

Step 6

Calibrate and install the camera in the car.
Download and install the Cipia EyeSightInstaller Mobile application Android APK.

Note that this application requires Android 8 or above

Login with the provided Installer Email, Password, and Server URL.

Step 7

Follow the screen prompts and unscrew the side compartment and insert the micro SD card.

Step 8

Use your phone's Wifi to connect to the Cipia's access point. Look for FS-WiFi-XXXXXX

Click on the I'm connected button to confirm that you're connected to the Cipia unit.

Once connected enter the device password, this will be supplied along with the installation app's credentials, and click on Install a new device

Step 9

Follow the instructions and enter your vehicle's information along with the Ver0.26-WiFi configuration file.

Step 10

If you are using the latest apex with apx-ndm-cipia, you can configure the unit with the configure command

# Configure Cipia on the Syrus

$ sudo apx-ndm-cipia configure

$ sudo apx-ndm-cipia configure
"Starting configuration, this may take a while, please wait"
"Attempting to discover Cipia FS10 WiFi"
"WiFi network found, Attempting to connect Cipia FS10 WiFi"
"FS-WiFi-503cbe57 WiFi network connected"
"Cipia IP found []"
"Cipia device changed to mode [installation]"
"Cipia device configuration install succeed"
"Cipia device set to mode [completed]"
"Cipia device set to mode [standard]"
"please electrically reboot your cipia device"

# note that if this fails to configure the Cipia, check the power connection and try again
# once you get the successful configuration restart the Cipia electrically

After restarting the Cipia you can verify that it's working with the status command

$ sudo apx-ndm-cipia status
    "id": "E321290499",
    "mac": "A4:04:50:3C:BE:57",
    "version": "",
    "ip": "",
    "connection": {
        "state": "CONNECTED",
        "since": 1671119309

If you have an older version of Apex select the Communication channel Wifi, and using the settings from the first 2 steps enter the Wi-Fi settings.

Wi-Fi settings

Wifi SSIDSyrus 4 hotspot SSIDSyrus4G-LTEsyrushotspot
Wifi passwordSyrus 4 hotspot passwordsyrus1234syrus1234
Server address/IPSyrus 4 hotspot ip address (inet addr)
PortDefault port for Syrus 4 Cipia integration1883

Change any of the device settings if desired.

Step 11

Device Test, Calibration, and Driver Enrollment

The calibration of the Cipia is done by attaching the provided Checkerboard square to the headrest of the car seat, and moving the seat back and forth slowly. You can download a sample checkerboard square from the following link.

Keep following the onscreen prompts to test the device, and register a driver.

Note that the driver registration is required if you want to trigger the events for driver detection.

Step 12

At this point the installation is complete and you can use the Syruslang fatigue sensor section to start detecting events.


If you are unsure of the Cipia's MAC address, follow this procedure to find it:

# assuming you have the default network credentials, connect to Cipia
$ sudo apx-wifi add FS-WiFi-503cbe57 1234567890

# verify the connection
$ sudo apx-wifi status

# get the Cipia IP (inet addr)
$ ifconfig 
wlan0     Link encap:Ethernet  HWaddr FC:45:C3:8F:C6:D8
          inet addr:  Bcast:  Mask:
# ping the Cipia gateway (.1 address)
$ ping

# query the ARP table
$ cat /proc/net/arp     0x1         0x2         a6:04:50:3c:be:57     *        wlan0

# note that this is the MAC of the local access point, change the first two letters from a6 to a4 and that's the MAC of the Cipia's wifi

If you have a device stop sending videos via the Cipia FS-10 you can perform a restart by sending the following commands using Syrus Cloud:

# restart the video module
apx-video restart --module=ndm

# wait for 1 minute and query the Syrus hotspot status
apx-hotspot status

# once the hotspot is active you can restart the Cipia device by pressing the power button
# verify that the Cipia is connected with 
apx-video status

Other helpful commands

# verify if a Cipia camera is connected to the Syrus' hotspot
apx-hotspot list

# restart the Syrus 
apx-system reboot

# verify the status of the ignition
# most installations use the ignition switch to power on the Cipia so it must be ON to detect the Cipia camera
apx-io get ign
# consult the Cipia device MAC
# this MAC address should match the same one found in the apx-hotspot list
apx-video get --device=cipia_fs10 --mac

Guide: Movon via Ethernet

The first option for installing the Movon MDSM-7 will use the Ethernet cable, this option is generally cleaner and less hassle as there's a more direct connection with the Movon and all the events can be generated as well as video clips received.

Movon Setup

We need to access the Movon's Calibration Interface in order to setup the video capturing capability and enable communication with Syrus.

To do so we must connect via USB and enter the IP address and port of the Movon accessory on a browser (<<<>>>), see the PC Calibration section of the manufacturer's installation guide for more information.


Firmware / OS Version for Movon

Note that the MDSM-7 firmware that DCT tests was 0.3.04, however DCT has found that some Movon devices with this version still cause issues detecting the video, you have to reflash the device with the same 0.3.04 version to fix it.

Once connected to the Movon you'll be guided through the calibration process.

Once you complete the calibration you'll be taken back to the main screen where you'll have the option to upgrade the firmware.

Start by downloading and extracting the following compressed file which contains a binary pkg in order to upgrade the Movon to the necessary firmware version (v0.3.04).

Step 1

Select Firmware update

Step 2

Select the extracted file mdsm7_0.3.04.pkg from the compressed zip downloaded earlier.

Wait a few minutes while the firmware is updated.

Step 3

Once the firmware is updated go back to the main menu and go through the Calibration again.

Go through the steps on screen to detect the speed (recommended CAN speed) and perform the Auto Camera Setting.

Once you get to the DVR Setup you can use the following settings:

Step 4

The DSM Setup allows you to enable/disable specific signals.

Step 5

The Auto Camera Setting handles the driver detection and ensure the whole face is captured.

Step 6

Under the miscellaneous settings select Video clips and underneath which events you want to capture video clips with.


FMS RS232 Baudrate

Make sure the FMS RS232 Baudrate is OFF .

Once the calibration is complete export your settings so you can copy them to other devices

Step 7

Next from the Movon's main menu go to the Ethernet Settings

this opens up the Network settings, start by making sure DHCP is disabled in the first section.

The IP address of the first section is the IP address of the MDSM-7, be sure to select an IP address within the same subnet as the bottom section's IP address. The bottom section's IP address is the one we're going to configure on the Syrus in the nexts step.

Make sure to activate the TCP/IP FMS Activation and enter the IP address of the Syrus 4 ethernet interface, along with a port ranging from 61500 - 61550.

Once done, click on the right arrow to proceed and save the configuration.

Step 8

Finally go into the Accessories -> Video section of the Syrus 4 Management UI and enter the general settings; where you'll save the location of the video storage and max allowed space.

Click on the top right button to add a new camera and select type MDSDM-7 and enter the same IP address and port from Step 7 above (be sure to enter the IP address of the bottom section of the Network configuration from Step 7)

At this point it's done, you're ready view the messages published via redis or configure a Syruslang script to report fatigue events.

Guide: Movon via CAN Bus

The second option installing the Movon MDSM-7 will use the ECU wires of the CAN bus, we recommend using Syrus' secondary interface for the connection.

CAN Bus Wiring Pinout (found in 14-pin molex)

MDAS-7 Wires Signal Description Syrus Signal Syrus Wires
White CAN High Pin 1 - CAN High cable from Movon, connect to Syrus cyan CAN 2 High cable. CAN2_H Cyan
Green CAN Low Pin2 - CAN Low cable from Movon, connect to Syrus white/light green CAN 2 Low cable. CAN2_L White Light-Green
Red PWR Power for the Fatigue sensor accessory, use the same power source as the Syrus +12-24V DC.
Black GND Fatigue sensor's ground, connect to the Syrus 4 electrical ground cable. GND Brown

Note be sure to maintain the cables for the ECU monitor twisted.

Movon Setup

We need to access the Movon's Calibration Interface in order to setup the video capturing capability and enable communication with Syrus.

To do so we must connect via USB and enter the IP address and port of the Movon accessory on a browser (<<<>>>), see the PC Calibration section of the manufacturer's installation guide for more information.

Once connected to the Movon you'll be guided through the calibration process.

Step 1

Go through the steps on screen to detect the speed (recommended CAN speed) and perform the Auto Camera Setting.

Once you get to the DSM Setup you can enable/disable specific audible events.

Step 2

The Auto Camera Setting handles the driver detection and ensure the whole face is captured.

Step 3

Under the miscellaneous settings select the Snapshot and underneath which events you want to capture photos with.



Note that although Snapshot Transmission is selected no photos are captured with the MDSM7 at this time.

Once the calibration is complete export your settings so you can copy them to other devices

At this point connect the Movon to the vehicle's CAN bus interface following the manufacturer's instruction.

Syrus Configuration

For the configuration of option B (over ECU) we'll create an ECU Profile in Syrus Cloud to configure the Syrus.

Be sure to select the Accessories configuration depending on the CAN interface you use (Primary or Secondary), and select ALL Movon parameters.

Once the Syrus has the profile, and you install the Movon MDSM-7 you can trigger the fatigue sensor messages and trigger messages using Syruslang.

You can also use the apx-ecu tool to view the parameters.

# List ECU parameters, indicating a driver on the phone and yawning
$ sudo apx-ecu list_parameters
    "630_1.1_movon": 0,
    "630_1.2_movon": 0,
    "630_1.3_movon": 1
    "630_1.4_movon": 1,
    "630_1.5_movon": 0,
    "630_1.6_movon": 0,
    "630_1.7_movon": 0,
    "630_1.8_movon": 0,

The list of parameters and their respective unique CAN_ID are:

ECU Unique IDDescription
630_1.6_movonDriver absence
630_1.7_movonCamera blocked
630_1.8_movonCamera error

Guide: Caredrive MR688B

Manufacturer's installation guide

To install the Caredrive MR688B, we'll use the Syrus serial RX/TX wires.

Serial Wiring Pinout (found in 14-pin molex)

Caredrive Wires Signal Description Syrus Signal Syrus Wires
Blue RX Caredrive RX (MR688B 232 data receiver), connect to the Syrus orange data transmitter cable. RS232_TX Orange
Green TX Caredrive TX (MR688B 232 data transmission), connect to the Syrus blue data receiver cable. RS232_RX Blue
Red PWR Power for the Caredrive accessory, use the same power source as the Syrus +12-24V DC.
Black GND Caredrive's ground, connect to the Syrus 4 electrical ground cable. GND Brown

Syrus Configuration

Once you have the Caredrive fatigue sensor accessory connected to the Syrus you can configure the serial port to fatigue_sensor mode with the apx-serial tool.

$ sudo apx-serial mode fatigue_sensor

To test the communication with the accessory, you can use the capture command.

$ sudo apx-serial fatigue_sensor capture

a photo is captured and automatically uploaded to the default directory: /data/users/syrus4g/fatigue_sensor.

Before your first drive it's important to change the default settings, here's some recommended apx commands you can use to program the camera for 'normal' operation.

# Set sensitivity to 2.9 seconds
$ sudo apx-serial fatigue_sensor sensitivity 3

# Set minimum speed to 30kph
$ sudo apx-serial fatigue_sensor min_speed 30

# Set speeding alarm threshold to 135kph
$ sudo apx-serial fatigue_sensor speeding 135

# Set the speaker volume to low
$ sudo apx-serial fatigue_sensor speaker_volume 1

Ensure the changes are saved by turning the fatigue sensor off and back on.

Note that some fatigue sensors include dip switches on the back of the camera that override these settings. Follow the recommended settings in the manual of the fatigue sensor