Hardware Product Specification

S100 Dual-Mode Sleep Sensing Strip

Piezoresistive and piezoelectric sensing fused in a 1.5 mm fabric laminate.
An OEM module for mattresses, smart beds and elder-care systems.

S100
95%+Heart Rate Accuracy
±3 bpmRespiration Error
≤10 sBed/Exit Response
5 yrsLocal Storage
Dual-Mode Sensing

One strip, two physical quantities

The piezoresistive layer reads static body-pressure distribution; the piezoelectric layer captures micro-vibration from the heartbeat. Both are sampled synchronously on the same strip and cross-validate each other — pressure answers presence, piezo answers vitality.

One strip · one acquisition Pressure channel Body-pressure change · night scale Empty Bed-in Turning Exit Piezo channel BCG and respiration · second scale
Pressure · envelope Piezo · BCG Piezo · respiration
Mode 01 · Pressure

Piezoresistive body-pressure sensing

Resistive and conductive fabrics form a pressure-sensitive divider network with continuous output.

  • Bed/exit decision — response ≤10 s
  • Posture & turning — pressure-centroid tracking
  • Adaptive baseline — 24 h rolling empty-bed baseline
  • Persistent baseline — stored in flash, no relearn after reboot
Mode 02 · Piezo

Piezoelectric ballistocardiography

The BCG signal is band-split to extract beat-to-beat cardiac activity and the respiration envelope.

  • Heart rate — BCG band-pass 0.6–2.5 Hz
  • Respiration — band-pass 0.1–0.5 Hz
  • HRV — SDNN / RMSSD / pNN50
  • Signal quality — SQI 0–100 per window
Signal Chain

200 Hz sampling, fully solved on-device

Raw signals are sampled at 200 Hz, then filtered, split, feature-extracted and decided entirely on the device. Heart rate and HRV refresh every 4 s; a data frame is emitted every second. No network required at any stage.

Cardiac and respiration channels use independent band-pass designs so body movement does not leak into the heart-rate path. Apnoea is flagged as a low-amplitude event lasting ≥10 s.

Piezo · BCG Piezo · respiration Pressure · baseline
Construction

Nine-layer laminate, 1.5 mm sensor thickness

Multiple functional layers are heat-laminated into a single body, laser-formed, with a riveted terminal. No rigid frame — it deforms with the mattress and resists crease failure under repeated load.

Exploded view
Layers
9
functional layers laminated
Thickness
1.5 mm
sensor thickness
Forming
Single-pass press
no spot-glue delamination
Cutting
Laser-formed
stable contour tolerance
Termination
Riveted terminal
solderless, flex-resistant
Frame
None
deforms freely with the mattress

Material composition, layer order and process parameters are proprietary; full technical documentation is available under NDA.

S100 product view
Form Factor

Thin enough to disappear

A 40 × 550 mm sensing area at 1.5 mm sensor thickness. Lay it between mattress and base, or sew it into a topper. With no rigid parts it leaves mattress rebound unchanged and stays imperceptible to the sleeper.

Sensing area40 × 550 mm
PCB size40 × 55 mm
Sensor thicknessapprox. 1.5 mm
DeploymentUnder-mattress or sewn into topper
Integration Forms

Built into the product, not bolted onto it

At 1.5 mm with no rigid frame, S100 can be sealed inside the finished product on the production line. It ships as part of the host product — invisible and imperceptible to the end user.

Temperature-regulating blanket

Integrated with a heating or cooling blanket it closes the loop: S100 supplies sleep stage and body movement, the thermal system adjusts accordingly — cooling at sleep onset, holding through deep sleep, warming before wake — with no manual setting.

Inside the mattress

Sealed between the cover and comfort layers, shipped with the mattress, leaving rebound feel and appearance unchanged.

Inside the pillow

Close to the head and neck for a higher signal-to-noise ratio on micro-movement and snoring — suited to snore-monitoring products.

Retrofit on the base

Works simply laid between mattress and base — no change to mattress construction, ideal for retrofitting existing models.

Installation

Retrofit layout: a single strip laid across the chest area, cable routed along the base to the head end.

Capability

Real-time and full-night output

Real-time
Heart rate40–110 bpm, accuracy >95%
Respiration rate10–30 breaths/min, error ±3
Bed/exit detectionResponse ≤10 s
Body movementToss-turn + micro-movement
SnoringTensorFlow voiceprint AI
Data outputOne frame per second
Full-night report
Sleep score0–100 composite rating
Sleep stagesDeep / Light / REM / Awake, 20 s granularity
Time trackingBed-in, sleep-onset, wake-up, get-up
Vital signsHR avg / max / min + HRV
Night awakeningsCount & duration statistics
Respiratory events≥10 s low-amplitude event count & duration
On-Device Computing

All computation and storage stay on the device

The algorithm loop runs locally on the module with no cloud or network dependency. Biometric data never leaves the device, avoiding cross-border transfer and third-party sharing risk. (A cloud-enabled version is available as an option.)

No cloud required

Nothing is uploaded; full functionality without an internet connection. (Cloud version optional.)

No third-party sharing

Sleep data stays exclusively on the device and enters no third-party pipeline.

User-controlled

Reading and erasing biometric data is entirely under the end user's control.

5-year local storage

Complete nightly reports retained locally for long-term trend review.

Runs standalone

The module operates without a host, keeping integration cost low.

Cost-effective

Under 70 USD per bed, suited to volume production programmes.

Integration

Three interfaces, chosen by system architecture

One hardware platform supports three interfaces. Choose by whether the end product has its own controller and whether it is networked — the strip itself does not change.

UART

Direct to the host controller with the lowest latency and power. Suited to smart beds and mattress control boxes that already have an MCU or SoC.

BLE

Wireless link to a phone app or gateway. Suited to standalone and retrofit deployments without a host controller.

Wi-Fi

For viewing data when you are not beside the device — checking on a parent from afar, a nursing station reviewing all rooms, or pulling up last night\u2019s report from anywhere.

Specifications

Technical specifications

Hardware
ModelS100
Sensing area40 × 550 mm
PCB size40 × 55 mm
Sensor thicknessapprox. 1.5 mm
ConstructionNine-layer heat-laminated fabric
Sensing principlePiezoresistive + piezoelectric
InterfaceUART / BLE / Wi-Fi, selectable
Signal & algorithm
Sampling rate200 Hz
ChannelsBCG / pressure / sound — 3 channels
Cardiac band-pass0.6 – 2.5 Hz
Respiration band-pass0.1 – 0.5 Hz
HR refreshEvery 4 s (60 s sliding window)
Frame outputEvery 1 s
Compute & storageFully on-device, no cloud (cloud version optional)

Figures on this page are for product description; the shipped technical documentation and test reports govern.