DMS4 driving behavior detection system

Product introduction

driving behavior detection system

Through the lens and infrared light source, the driver's facial features are captured to accurately mark the specific position. When the data exceeds the standard, appropriate warnings can be provided immediately, and information integration in the fleet management center can be provided. This can not only reduce traffic accidents caused by fatigue driving, but also provide excellent fleet management solutions.


Introduction video


Features and Benefits

Obtain invention patent

The algorithm of this product was independently developed by Chimei Automotive and has obtained Taiwan’s invention patent (Patent No.: 108105337)

HD quality presentation

High-definition AHD screen output delivers more detail and is easier to integrate with surveillance and recording systems.

Precise identification technology

It can accurately identify the driver's facial expression, including head rotation angle, gaze direction, mobile phone use, etc.

Special optics for eye protection

Using special optical design and IR LED, its specifications comply with IEC62471 specification certification, and also effectively solves the problem of ambient light reflection.

Support OTA software update architecture

Real-time online firmware updates (OTA) can be used to extend product cycles and solve reliability and security issues at the same time.

Rich certification experience

Complies with VSCC-56-3 electromagnetic compatibility test and vibration test of Taiwan's road transport vehicle regulations, other certifications are available based on customized designs.

Application situation


driver detection

Situation description

1. Driver identification
2. Driver’s seat vacancy detection
3. Mask wearing detection
4. Suitable for drivers of all skin colors and races
5. Applicable to drivers wearing sunglasses (except mirror reflective lenses)
6. Suitable for drivers wearing hats (eyes and facial features must not be covered)

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Fatigue detection

Situation description

1. Monitoring with eyes closed (monitoring can also be done while wearing a mask)
2.Yawn detection


Distraction detection

Situation description

1. Staring and head-turning distractions
2. Distracted use of mobile phones
3. Smoking detection
4. Hands-free mobile phone call monitoring


driving environment

Situation description

1. Suitable for driving environments with no light
2. Comply with international Eye safety standards
3. Vibration recognition has been optimized to greatly reduce the impact of vibrations during driving.


Alert mechanism

Warning statement

1. System startup: When the vehicle starts, detection starts immediately.

2. Detection conditions: The distance between the driver’s face and the system is between 40 ~ 110cm.

3. Alarm timing: When driver fatigue and distraction are detected, an immediate warning or risk signal can be sent back to the background to facilitate integration with vehicle body signals, GPS signals, and even other ADAS functions (such as lane departure, lane departure, etc.) Information such as the distance to the vehicle in front, pedestrian and moving object detection, etc. can be analyzed and analyzed to more comprehensively examine and control fleet management risks.

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Features and Benefits

product specifications

System specifications


DMS4 driving behavior detection system

Operating Voltage


Operating temperature


Working current


Output image




Dynamic Range


Image sensor size

1/4-inch(4.5mm) On Semi

Image sensor format

CMOS (Active Pixels:1280 (H) x 800 (V) = 1.0MP, Monochrome, Global Shutter)

Field of view (horizontal)


DMS 4.0® Vision Processor Specifications

Hyper-thread 64bit OSC ARM&NPU CPU

WLAN 802.11n Single band + Bluetooth 4.2

1T1R module (Wi-Fi: SDIO BT: HS-UART)

10/100M Ethernet MAC*2

support internal PHY * 1 

128MB Flash x 2 (for code memory redundant)

2 x 1GHz, 32bit LPDDR3 SDRAM interfaces

All-in-one CSI-2 MIPI

Separate Serdes GSML2

1 x CAN ports (>1Mbps)

CVBS video out

Frequency of time pulse signal [1PPS] up 10 Hz