Aika Lab · Air Dream BM05BF · BCI

Description

Description Brain-Computer Interface · Hardware Overview Aika Lab BCI Hardware Brief Air Dream BM05BF · v1.0 An EEG-based frontal patch interface enabling real-time closed-loop acoustic neuromodulation. The hardware foundation of every Aika Lab BCI product. AIKA LAB · INTERNAL DOCUMENT · V1.0 Section 01 Device Overview The Air Dream BM05BF is the single-channel EEG wearable adopted by Aika Lab as the hardware sensor for all closed-loop products. Worn on the forehead via a nano-hydrogel electrode patch, it streams brainwave data over BLE 5.0 to the Aika Lab Android SDK in real time — with a total system latency of just 50 ms. At just 5g and 26mm in diameter, it is designed for full-night wear without disturbing sleep. A single charge provides over 10 hours of continuous operation, covering a complete sleep session with margin to spare. Component 01 Main Unit Round flat housing, magnetic forehead attachment. D26 × 11.8mm, ~5g. Component 02 Reusable EEG Sensor Nano-hydrogel conductive pad, magnetic-attach. Up to 15 uses per patch; use within 2 weeks of opening. Component 03 Disposable Adhesive Single-use double-sided tape to secure sensor and unit to skin. 15 pcs per pack. Component 04 Charging Case Oval cradle with USB-C input, 400 mAh capacity. 92.4 × 45.8 × 30.9mm. Section 02 Core Technical Specifications Parameter Value Notes EEG Signal Electrode configuration Single-channel frontal differential FP1–FP2 bipolar lead, no reference electrode Sampling rate 250 Hz Nyquist frequency 125 Hz ADC resolution 16 bit Noise floor < 1 μV RMS CMRR ≥ 110 dB Effective suppression of 50/60 Hz mains interference Hardware bandwidth 0.5 – 100 Hz Analog filters: DC block + high-frequency cutoff Motion Sensor (IMU) Sensor type 6-axis IMU 3-axis accelerometer + 3-axis gyroscope Posture detection 5 positions Upright, left-side, right-side, supine, prone Data sync Co-packaged with EEG Same BLE frame, same timestamp BLE Communication BLE version BLE 5.0 Low-energy, supports 2 Mbps PHY Transfer mode Notification (push) Device pushes; app receives passively System latency (measured) 50 ms BLE + SDK + AudioTrack full-chain; confirmed 2026-03-31 Net wait time (closed-loop) 450 ms Target 500ms − measured 50ms latency Power Battery life > 10 hours Full-night coverage with margin Charge time ~30 min (unit) · ~60 min (case) Contact-pin charging via case; case via USB-C Environment Operating temperature 5℃ – 40℃ Storage temperature −5℃ – 35℃ Humidity 15% – 75%, non-condensing