A4 dTOF Laser Sensing Faucet Control Board Solution

2026-06-15 14:18:18

Sensor Control Module · A4 Solution

A4 dTOF Laser Sensing Faucet Control Board Solution

dTOF laser sensing control board embedded in the faucet spout for high-end basin and kitchen faucets. Laser ranging penetrates water mist, steam and dirt, eliminating false triggers and delayed shut-off inherent in traditional infrared sensing.

Technical Specifications ODM Customization

±0.5cm

Ranging Accuracy

≤20μA

Standby Power

IP67

Protection Rating

1M cycles

Solenoid Life

Critical Flaws of Traditional IR Sensing Faucets

In high-end bathroom scenarios, basin faucet spouts are only 15-25cm from the bottom, operating in high-humidity, splash-heavy environments where traditional IR solutions frequently fail.

No Water — Sensing Window Covered

When the sensing window is covered by limescale or soap residue, IR signal attenuates and hand presence cannot trigger water flow. In kitchen scenarios, cooking oil and detergent are "natural enemies" of IR sensing.

Continuous Flow — Water Mist False Trigger

Water mist condensation causes IR signal refraction, creating false triggers. Water continues flowing after hands leave, wasting water and risking overflow when unattended.

Basin Reflection Interference

Basin reflection, drain reflection, and water column self-sensing cause frequent IR misjudgment. White and mirrored basins are especially problematic.

Chemical Residue Corrosion

Frequent exposure to facial cleanser, hand soap and other chemical residues degrades IR window transparency over time, increasing maintenance costs.

Six Core Technical Breakthroughs of dTOF Laser Sensing

Material-agnostic, color-independent: sensing distance error ≤10mm across black/white/gray surfaces; stainless steel/ceramic/mirror/glass all accurately sensed; hand skin tone sensing error ≤10mm.

dTOF Laser Precise Ranging

Direct time-of-flight measurement, 940nm IR laser pulse nanosecond-level ranging. ±0.5cm accuracy ensures accurate hand distance judgment, eliminating false triggers or delayed shut-off.

Water Mist and Dirt Immunity

Laser narrow beam + time measurement principle. With 0.5mm water film on window, ranging deviation remains ≤1cm. Toothpaste residue, oil film, flour completely non-interfering with sensing performance.

Miniaturized Embedded Design

Control board diameter ≤20mm, height ≤12mm, directly embedded inside standard spout housing. Faucet manufacturers can integrate dTOF sensing without modifying existing molds.

Dual-Chip Interchangeable Platform

Dual-supplier solution interchange, compatible chips without PCB modification, mitigating chip supply chain risks. Provides critical production assurance for ODM customers amid global chip shortages.

Ultra-Low Power + Li-ion Charging

20μA standby, battery version 12-18 months autonomy. Li-ion version: USB Type-C charging 1.5hrs for 9 months use. Zero consumable maintenance in kitchen scenarios.

Adaptive Sensing Distance Calibration

Automatically detects basin distance, background reflectivity, and installation height after installation, auto-setting optimal sensing parameters. No manual potentiometer adjustment needed, reducing installation threshold.

Get A4 Solution Technical Documentation & Quotation

Our engineering team will provide detailed technical proposals and ODM customization recommendations within 24 hours

Core Technologies: dTOF Laser Super-Sensing (Patent #2) / Dual-Chip Interchangeable Platform (Patent #10) / Intelligent Anti-Overflow Protection (Patent #13)

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