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.
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.
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No Water — Sensing Window CoveredWhen 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. |
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Continuous Flow — Water Mist False TriggerWater mist condensation causes IR signal refraction, creating false triggers. Water continues flowing after hands leave, wasting water and risking overflow when unattended. |
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Basin Reflection InterferenceBasin reflection, drain reflection, and water column self-sensing cause frequent IR misjudgment. White and mirrored basins are especially problematic. |
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Chemical Residue CorrosionFrequent 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.
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dTOF Laser Precise RangingDirect 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. |
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Water Mist and Dirt ImmunityLaser 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. |
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Miniaturized Embedded DesignControl board diameter ≤20mm, height ≤12mm, directly embedded inside standard spout housing. Faucet manufacturers can integrate dTOF sensing without modifying existing molds. |
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Dual-Chip Interchangeable PlatformDual-supplier solution interchange, compatible chips without PCB modification, mitigating chip supply chain risks. Provides critical production assurance for ODM customers amid global chip shortages. |
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Ultra-Low Power + Li-ion Charging20μA 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. |
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Adaptive Sensing Distance CalibrationAutomatically detects basin distance, background reflectivity, and installation height after installation, auto-setting optimal sensing parameters. No manual potentiometer adjustment needed, reducing installation threshold. |
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