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Advanced Driver Assistance System (ADAS) Sensor Module

Advanced driver assistance systems in modern vehicles utilize a combination of radar, LIDAR, and other sensing technologies to enhance safety — from lane assist and adaptive headlights to blind spot notifications and adaptive cruise control to fully autonomous functions.

/ Saving Lives through Innovative Technology

Designed to prevent accidents and save lives, ADAS is a collection of several systems with features that can help guide driver decisions in real-time as conditions change and enable human-free operations.

Radar, LIDAR, cameras, and ultrasound sensors are strategically placed throughout the exterior to give a 360-degree view and execute safety functions as necessary. In-cabin cameras are also used to monitor driver alertness and react accordingly, while passenger occupancy monitors adapt seatbelt and airbag settings if a child is detected in the front seat. 

Depending on the make and design of the vehicle, ADAS functions may include some or all of the following:

Safety and collision avoidance:

  • Adaptive cruise control (ACC)
  • Automatic emergency braking (AEB) with pedestrian detection
  • Blind spot detection (BSD)
  • Collision avoidance system (CAS)
  • Cross-traffic alert (CTA)
  • Driver monitoring system (DMS)
  • Drowsy driver detection (DDD)
  • Emergency driver assist (EDA)
  • Forward collision warning (FCW)
  • Highway assist (HA)
  • Lane change assist 
  • Lane departure warning (LDW)
  • Lane keeping assistance (LKA)
  • Night vision system (NVS)
  • Surround view system (SVS)
  • Tire pressure monitoring system (TPMS)
  • Traffic sign recognition (TSR)
  • Turning assistant (TA)
  • Vehicular communication systems (V2X)
  • Wrong way driving warning (WWDW)

Parking and maneuver assistance:

  • Automatic parking system (APS)
  • Parallel parking assist
  • Park distance control (PDC)
  • Perpendicular parking assist

Comfort and convenience:

  • Adaptive headlights
  • Adaptive high beam control (AHBC)
  • Head-up display (HUD)
  • Rain-sensing wipers
  • Traffic jam assist (TJA)

Fuel efficiency and emissions reduction:

  • Eco-driving mode
  • Intelligent speed adaptation (ISA)
  • Predictive cruise control

/ Application Considerations

Best-in-class components are required for the optimal performance of ADAS sensor modules. Engineers should consider the following:

  • ESD protection - sensing technologies and other components must be protected from damaging electrostatic discharge
  • Component size - several systems make up ADAS and there’s limited space in the vehicle to house all of the necessary components, so the smaller the better 
  • Reliability in harsh conditions - fluctuating temperatures, vibration, and shocks are a few of the environments design engineers should account for to prevent system failure
  • Reverse battery protection - designs must incorporate safeguards to prevent reverse polarity in the battery
  • Thermal performance - maintaining proper heat dissipation and minimal energy losses while executing multiple functions is essential for effective ADAS sensor module design
  • Efficiency - ADAS sensor modules should operate as efficiently as possible without sacrificing reliability
  • Cost - these advanced components must be robust enough to perform but also affordable enough to be used in vehicles to keep costs reasonable for consumers
  • Applicable industry standards - ADAS components must meet stringent auto standards, such as AEC-Q101 qualification

/ ADAS: Prevent Accidents & Enhance Safety

/ Block Diagram

Block Diagram

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