In the context of the evolution of automotive electronic and electrical architecture toward domain concentration, environmental perception modules have become key components for enhancing vehicle comfort, safety, and ADAS function reliability. Traditional single-function sensors are increasingly difficult to meet multi-scenario fusion requirements, while the Nexisense ZH101 vehicle-mounted light and rain composite sensor achieves multi-parameter collaborative perception and intelligent linkage control by integrating rain, light intensity, and in-cabin/out-cabin temperature-humidity monitoring. The module adopts ghost imaging technology to optimize raindrop three-dimensional distribution reconstruction, improving signal-to-noise ratio and anti-interference performance, and has been verified in projects of multiple OEM OEMs and Tier1 suppliers for its system compatibility and long-term stability.

Core Technology and System-Level Advantages

The ZH101 module takes a high-precision optical array as its core, combined with ghost imaging algorithm to achieve non-contact reconstruction of raindrop spatial distribution, avoiding the problems of traditional optical scattering methods that are susceptible to dust, dirt, or strong light interference. Rain detection resolution supports 0-5 level gradient division, response time<300 ms, accurately matching intermittent/low-speed/high-speed/continuous four-gear wiper logic.

Light perception adopts multi-channel photosensitive elements, covering forward, lateral, and sky diffuse light, with dynamic range up to 0.01-100 klx, supporting automatic high-low beam switching in typical conditions such as tunnel entry/exit, backlighting, and dusk. Temperature-humidity channel integrates polymer capacitive element and NTC thermistor, with in-cabin monitoring accuracy ±2%RH / ±0.5℃, data can be directly used for fog prediction models and HVAC pre-regulation.

Communication interface supports LIN 2.x (mainstream) or CAN FD (optional), baud rate compatible with mainstream vehicle networks; output protocol includes standard wiper gear commands, lighting status requests, and environmental parameter broadcasting, facilitating seamless docking with BCM, IPM, or ADAS domain controllers.

Typical Application Scenarios and Engineering Practices

Passenger Cars and New Energy Vehicles Wiper/Lighting Intelligent Control

In L2+ level assisted driving models, ZH101 is installed inside the front windshield below the rearview mirror, sharing the bonding area with the front-view camera. Through LIN bus, it sends real-time rain level and light threshold to BCM, achieving adaptive adjustment of wiper intermittent time and AFS follow-up steering light linkage. A certain new energy OEM mass production project shows that after integration, driver manual intervention rate in rainy conditions decreased by 65%, and high beam false activation rate in tunnel scenarios reduced to<1%.

ADAS and Autonomous Driving Environmental Perception Enhancement

For models equipped with front-view cameras/LiDAR, rain data can be input into perception fusion algorithms to dynamically adjust camera exposure time and cleaning strategies, avoiding target loss caused by raindrop occlusion. Light information assists HDR image processing, and temperature-humidity data supports window defogging prediction models. Actual road test verification shows that after integrating ZH101 in moderate rain conditions, target detection recall rate improved by 18-25%.

Commercial Vehicles and Logistics Vehicles All-Weather Adaptation

Heavy trucks, buses, and other commercial vehicles operate under complex meteorological conditions. The multi-parameter output of ZH101 can link with in-cabin air conditioning and defogging systems to prevent windshield fogging during high-speed driving. In a certain logistics fleet bulk project, the module docked with the vehicle T-Box to achieve cloud weather prediction and pre-regulation strategies, reducing annual average air conditioning energy consumption by approximately 8%.

Selection Guide and Integration Considerations

Selection Key Points

• Target vehicle model: Passenger cars prioritize LIN interface, commercial/ADAS models optional CAN FD for higher bandwidth

• Installation location: Inside front windshield, bonding area must avoid HUD projection zone and heating lines

• Function combination: Basic version rain + light, advanced version adds temperature-humidity and fog prediction output

• Operating voltage: 9-16 V wide voltage, compatible with 12 V/48 V architecture

• Protection rating: IP67 (optical cavity), meets automotive-grade vibration/shock testing (ISO 16750)

Integration Considerations

• Optical cleanliness: Ensure bonding surface is oil-free before installation, recommend using special optical adhesive to fix, avoid bubbles affecting ghost imaging reconstruction

• Bus configuration: LIN node address default 0x10, supports diagnostic functions (UDS over LIN); CAN version requires defining DBC file, priority set to medium

• EMC optimization: Add TVS and filter capacitors at power end, signal lines use shielded twisted pair, no additional terminal resistor needed when length<3 m

• Calibration process: Factory pre-calibration of rain/light curves, post-mass production recommend secondary vehicle-level calibration combined with rain chamber/light chamber

• Fault handling: Supports OBD fault code output (rain sensor circuit low/high, communication timeout, etc.), facilitating after-sales diagnosis

OEM Customization and Bulk Supply Advantages

Nexisense provides flexible OEM cooperation modes for Tier1 and OEMs:

• Algorithm customization: Adjust rain level threshold, light response curve, temperature-humidity compensation model, adapt to specific vehicle wiper/lighting strategies

• Interface expansion: Support private LIN frame format, CAN message customization or PWM analog output

• Appearance/installation adaptation: Provide different housing shapes, bonding bracket variants, compatible with multiple rearview mirror integration schemes

• Bulk capacity: Annual production supports million-level, stable lead time 6-10 weeks, sample cycle 2-4 weeks

• Engineering services: Include reference circuits, software driver packages, EMC/environmental reliability test reports, and joint road test verification

Compared to similar imported composite sensors, ZH101 offers faster supply chain response and more competitive costs under equivalent performance, having assisted multiple new energy and traditional OEMs in achieving localization of key components.

Frequently Asked Questions (FAQ)

1. How does ZH101's ghost imaging technology improve rain detection anti-interference performance?
   Reconstructs raindrop three-dimensional scattering field through multi-angle light sources and detector arrays, suppressing interference from dust, insect corpses, dirt, etc., signal-to-noise ratio improved 3-5 times compared to traditional optical methods.

2. How does the module achieve wiper gear linkage with vehicle BCM?
   Broadcasts rain level (0-5 levels) through LIN bus, BCM controls wiper motor PWM duty cycle based on preset mapping table, supporting automatic switching of intermittent/low-speed/high-speed/continuous four gears.

3. What is the response logic of the multi-channel light sensor design in tunnel scenarios?
   Forward channel detects sudden drop in tunnel entrance light intensity, lateral channel assists in judging ambient diffuse light, comprehensive threshold triggers high beam activation, delay<200 ms, avoiding frequent flashing.

4. How is temperature-humidity data used for window defogging prediction?
   Module outputs in-cabin relative humidity and dew point temperature, BCM combines glass surface temperature model to calculate fog risk index, activates air conditioning defogging mode and blower in advance.

5. What is ZH101's performance at -40℃ low-temperature startup?
   Built-in heating element ensures rapid rise of optical cavity temperature to operating point, rain/light data effective within 30 s after startup, meeting automotive-grade cold start requirements.

6. What data refresh rate can be achieved when supporting CAN FD interface?
   Environmental parameter refresh rate up to 50 Hz in CAN FD mode, meeting L2+ level ADAS requirements for real-time environmental perception.

7. What impact does installation position have on ghost imaging reconstruction accuracy?
   Recommended installation at upper center of front windshield, avoiding heating lines and HUD projection zone; offset >50 mm may cause edge raindrop detection blind zones, suggest vehicle-level optical simulation verification.

8. How does the module's EMC compatibility meet automotive requirements?
   Passed CISPR 25 Class 5 radiated/conducted emission tests and ISO 11452 transient pulse immunity tests, suitable for high-voltage new energy models.

9. How to perform consistency calibration in mass production?
   Factory uses standard rain chamber + light chamber multi-point calibration, each batch sampling verifies curve drift<5%; post-mass production provides host factory batch calibration toolkit.

10. What joint verification support does Nexisense provide in OEM projects?
    Includes sample function testing, EMC/environmental reliability joint trials, rain chamber/light chamber road actual measurement, software integration debugging, and long-term durability tracking, ensuring reliability from development to mass production.

Nexisense ZH101 vehicle-mounted light and rain composite sensor, with its multi-functional integration, high-precision perception, and flexible interfaces, has become an important component in modern automotive electronic systems for enhancing environmental adaptability. Whether you are advancing new energy vehicle model development, ADAS function upgrade, or traditional model intelligent modification, welcome to contact the Nexisense team to obtain detailed specification sheets, engineering samples, and customized solutions. We look forward to cooperating with you to jointly verify its system-level value in specific projects, promoting vehicles toward more intelligent and safer travel experiences.