Product overview and engineering role
The SimtoLink 3D structured-light face module is for liveness and 1:N match under strong light, backlight, and makeup. A projected coded grating builds a depth map, which cuts photo, video, and mask attacks. Infrared fill light, RGB and IR sensors, and a light feature pipeline sit in one module for a turnstile, a kiosk, or a smart lock. On a weak network it can match an offline list with an edge box.
Integration has to settle tilt, recognition distance, interpupillary range, and reach for a child or a wheelchair user. SimtoLink advises on the cutout, cooling, and EMI shielding. Privacy mode, feature encryption, and log redaction can be written into the hardware specification for MLPS and personal-information protection.
Reliability and field fit
Salt-spray and vibration type tests that apply to this module cover electrical safety and EMC. Ports include surge and reverse-polarity protection. Reinforced ground and a zoned layout cut ground-loop and common-mode risk. Outdoor or coastal housings can take a higher ingress rating and a corrosion-resistant coating.
Bulk parameter import, threshold policy, and event video or waveform capture depend on the model. Configuration and firmware update over the air. Accept the unit on site with a power-on self-test, time sync on the link, and a sample spot check. For metering or safety use, SimtoLink helps with a third-party metrology submission and supplies the type-test file.
Key hardware parameters
The table is a typical build of this face module, for a selection note or a tender clause. A wider range, redundant power, or an intrinsically safe version is a separate quote; ask SimtoLink for the hardware specification and the installation and commissioning guide. Order codes in the family can differ slightly. The nameplate and the papers in the carton govern.
| Parameter | Specification | Notes |
|---|---|---|
| Recognition | 3D structured-light live face | Resists photos and masks |
| False accept rate | <0.001 % | Laboratory |
| False reject rate | <1 % | Threshold adjustable |
| Communications | USB2.0 / UART / Ethernet (by order) | Host or SDK |
| Supply | DC 5～12V, always powered | Works with infrared fill light |
| Imaging | RGB + IR, two paths | Coded depth grating |
| Storage | Feature cache (depends on the host) | Offline list match |
| Explosion protection | Not explosion-proof (typical) | Built into a turnstile or terminal |
| Operating temperature | -25～60 ℃ | Indoor and outdoor |
| Standard | Relevant GB/T / enterprise standard | Project acceptance |
Typical applications
Four passages this module usually serves, for solution design and for judging the return:
Campus and metro turnstiles
Peak flow, a mask policy, and a block-list link.
Office speed gates
Visitor booking, the destination floor on the lift, and attendance in one pass.
Smart locks and peepholes
Hands-free unlock when someone is carrying a large bag.
Clinical and care terminals
Identity check for a patient or an older resident, and authorization for a companion.
Installation, grounding, and maintenance
- Check the DC 5～12V window and polarity before power-up. Measure bus voltage and breaker rating with a multimeter if the drawing is unclear.
- Use shielded twisted pair, ground the shield at one end, and keep the run off long bundles with high-power cable.
- In the lab, prove bidirectional read and write and a threshold trip against the host before the module is fitted on site.
- Outdoor heads need a drain path and ventilation. Recheck the seal. Lightning earth resistance has to meet the local code.
- On a lane that stays in service, take a sample spot check and archive logs every 6 months.
Ordering, documentation, and support
A hardware specification, outline drawings, a wiring table, and an example project are available for this face module. Volume orders can include a sample review and inspection at the factory. Warranty and calibration follow the contract and the documents packed with the module.