Nexisense In-Vehicle Air Purification Sensor Integration Solutions: Smart Air Control, Protecting a Healthy Cabin

In-Cabin Air Quality Monitoring and Purification Scenarios

With the increasing penetration of electric vehicles and growing consumer attention to health, in-cabin air quality has become a critical factor for driving experience and safety. Enclosed spaces, HVAC circulation, and external pollution can cause elevated TVOC, formaldehyde, PM2.5, and CO₂ levels, leading to fatigue, allergies, or "cabin syndrome." The Nexisense in-vehicle sensor series provides full-chain sensing and control for intelligent HVAC systems and cabin air management, implemented in the following scenarios:

• Smart HVAC intake control: AQS and PM2.5/CO₂ sensors monitor internal and external air in real-time, automatically switching recirculation, optimizing filter life and energy consumption

• Cabin health monitoring: All-in-one sensors integrate PM2.5, CO₂, TVOC, and temperature/humidity data, supporting fatigue alerts and ventilation activation

• Active purification systems: Negative ion and water ion generators remove odors, settle particles, and regulate humidity, improving skin comfort

• EV cabin air management: Integration with BMS and domain controllers to coordinate air quality and battery thermal management, meeting GB/T 30512 VOC limits

• Premium vehicle comfort settings: Sensor arrays enable personalized air scenarios (child mode, pet mode), integrated into vehicle HMI

These applications comply with automotive functional safety (ISO 26262 ASIL B) and EMC (CISPR 25 Class 3). Sensors emphasize AEC-Q100/104 reliability, low power consumption, and interference resistance.

Selection Guide: Key Product Parameters and Matching Principles

Selection depends on vehicle type (ICE/EV), HVAC system architecture, interface protocols, and environmental conditions (-40~85°C, vibration/EMC).

ZM102 In-Vehicle Air Quality Module (AQS) (MOS+MEMS):

• Detection: TVOC, formaldehyde, other VOCs

• Output: LIN interface (LIN 2.x compatible)

• Power:<50 mW, EMI-resistant design

• Response time: ≤30 s

Suitable for HVAC intake detection, triggering internal circulation, LIN version allows seamless ECU integration.

MH-V1512A-LGC In-Vehicle CO₂ Sensor (NDIR):

• Range: 400~5000 ppm

• Accuracy: ±(50 ppm + 3% reading)

• Output: UART / PWM

• Oxygen-independent, moisture-resistant, lifespan >10 years

Cabin CO₂ monitoring, ventilation triggered >1500 ppm, condensation-resistant for high-humidity environments.

ZH32 Dual-Channel Laser Dust Sensor:

• Detection: 0.3~10 μm

• Range: 0~1000 μg/m³, PM2.5/PM10 channels

• Accuracy: ±15 μg/m³ (0~100 μg/m³)

• Output: CAN 2.0B (500 kbps)

• Supports professional calibration, high consistency

Real-time particle monitoring, linked to HEPA filtration, CAN interface for domain controller integration.

ZMHS10 All-in-One Air Quality Sensor:

• Integrates PM2.5, CO₂, AQS, temperature, and humidity

• Output: CAN / UART

• Built-in temperature compensation, high sensitivity, long lifespan

Reduces installation points and development costs for integrated cabin monitoring.

ZI100/ZI101 Negative Ion Generators:

• Output: LIN (customizable)

• Pulsed oscillation circuit, wide temperature range

• Ion concentration: >10⁷ ions/cm³

Odor removal and mood improvement, triggered by AQS.

Water Ion Generator:

• No water or consumables required

• Produces 5~20 nm active water mist ions with reactive oxygen

• Supports humidity regulation and sterilization

Protects skin and throat in dry environments, integrated into HVAC outlets.

Integration Considerations and Compatibility

• Communication protocols: LIN (AQS/ions), CAN (PM2.5/all-in-one), UART (CO₂), with DBC files and protocol stack reference

• Installation: AQS/PM2.5 in duct or center console; CO₂ in breathing zone; generators near air outlet

• Power & EMC: DC 9~36 V, TVS transient suppression, ISO 7637 & CISPR 25 Class 3 compliant

• Calibration & diagnostics: UDS ISO 14229, periodic zero/range calibration, self-test and fault codes

• Control & fusion: threshold-triggered recirculation/ventilation/purification; multi-sensor fusion calculates air quality index and displays on HMI; OTA supported

Distributed architecture with CAN/LIN bus load<70% for easy maintenance and expansion.

Application Cases

• Domestic EV SUV: ZM102 AQS, MH-V1512A CO₂, ZH32 PM2.5 integration, CAN/LIN with HVAC, automatic interior/exterior air switching, CO₂ >1500 ppm ventilation, GB/T 30512 VOC compliance, improved cabin comfort

• Premium MPV: ZMHS10 all-in-one + negative ion generator, monitoring PM2.5/CO₂/TVOC/Temp-Hum, auto purification and humidity control in child mode, satisfaction >90%

• Commercial fleet: ZH32 and CO₂ sensors in driver and passenger cabins, linked to high-efficiency filtration, reduced fatigue on long trips, meets commercial vehicle health standards

• Smart cabin air ecosystem development: sensor arrays integrated with vehicle HMI, real-time air quality display, personalized scenarios (smog mode, pet mode), enhancing premium positioning

OEM Customization and Bulk Supply Advantages

• Customizable range, thresholds, protocol (LIN/CAN ID, baud rate), form factor, and mounting brackets

• Full SDK, A2L files, reference circuits, functional safety documentation (ISO 26262)

• Strict batch consistency, full AEC-Q environmental reliability validation

• Stable supply chain and annual framework agreements aligned with new model SOPs

Applicable to EVs, commercial vehicles, and smart cabin air system manufacturers.

FAQ

• How to control VOC cross-interference in ZM102 in high-humidity/smog environments?

• MEMS + smart algorithm compensation, alcohol/smoke<5%, internal temperature compensation keeps drift <±10% FS/year

• Does MH-V1512A CO₂ respond at low temperatures (-30°C)?

• NDIR wide-temp design, preheat<60 s, T90 ≤30 s, supports -40°C startup

• How does ZH32 avoid optical window contamination?

• Built-in airflow protection + algorithm filtering, >10,000 h operation,<10% decay; add pre-filter in high dust

• How to avoid CAN/LIN bus conflicts with multiple sensors?

• Load<70%, configurable IDs and priorities, DBC and DM1/DM2 diagnostic messages

• Negative ion generator safety & EMC?

• Pulsed circuit + isolation, CISPR 25 Class 3, no ozone, safe LIN output

• Water ion generator long-term output?

• Semiconductor cooling + high-voltage self-cleaning, MTTF>5 years, no water/consumables needed

• Calibration & after-sales for bulk purchase?

• Calibration kits and CNAS traceable reports, sufficient stock, emergency replacement<72 h

• How to evaluate TCO of full in-vehicle air sensor system?

• Consider purchase, calibration frequency, MTTF>8 years, integration; Nexisense TCO 20~35% lower than imports

Conclusion

Nexisense specializes in high-performance in-vehicle air quality sensors and integration solutions for automakers, HVAC system integrators, and Tier1 suppliers. For smart cabin air management, EV air purification upgrades, or commercial vehicle health projects, contact us for sample testing, technical discussions, or bulk quotes to create healthier, smarter mobile spaces.