• Smart Sleep Monitoring

    Sleep monitoring belt can be used in cribs, home care and other fields

LSM-800-T
A highly sensitive sleep monitoring belt for the elderly care scenario

Product overview

The LSM-800-T is a non-contact sleep monitoring core component specifically designed for medical applications, remote health monitoring, and high-end health care. The product integrates the core “physical layer dual-link fusion technology” of the force sensing technology, achieving industry strict application standards in stability.
This sleep monitoring module adopts a dual-sensor architecture of piezoresistive (Presence) and piezoelectric (Vitals), distinguishing human body vibrations from environmental vibrations at the physical level. The piezoresistive unit is responsible for determining whether the person is lying in bed, while the piezoelectric unit captures weak biomechanical signals. The module design follows medical electrical safety principles, providing a stable, high signal-to-noise ratio, and privacy-secure health monitoring base.

Core capability verification

• Reference typical accuracy:±1 BPM
• Full localizing edge parsing logic
• Millisecond-level dynamic signal capture capability

Typical application fields

Healthcare and Wellness Care

Smart furniture

Sleep analysis

Safety pre-warning

Core technological advantages

Dual-sensor fusion architecture

Integrated piezoresistive effect(Presence)
Judgment and analysis of piezoelectric (Vitals) characteristics, fundamentally eliminating various misjudgments caused by environmental interference at the physical level.

The algorithm is locally embedded

The core analysis logic is fully integrated within the MCU of the acquisition board, and the physiological signs and status results are directly output through the standard UART interface.

Instant real-time response capability

Compared to the delay in traditional systems,the LSM-800-T of Ligan Technology can provide a rapid warning as soon as the pressure disappears.

Signal processing procedure

Static existence determination (Presence Logic)
By using highly sensitive piezoresistive sensors to confirm the physical presence of the human body on the bed, this serves as a prerequisite for the calculation to be initiated, effectively filtering out environmental interference from empty loads.

Life sign extraction (Vitals Capture)
Capture the tiny vibrations caused by the heartbeat at a high sampling rate, and output high-resolution data sequences through a high-precision converter.

Digital signal processing(DSP Logic)
It is equipped with a multi-level digital filtering algorithm, which can effectively eliminate mechanical and environmental noises in real time, and accurately extract the real-time heart rate, respiratory rate and body movement status.

Core performance

Heart rate measurement range
30-108BPM

Reference Accuracy: ±1 BPM

Respiratory measurement range
8 – 25 breaths per minute

Reference accuracy: ±1 times per minute

Not in bed judgment response
≤ 1.5 seconds

Typical response pattern

Signal conversion resolution
24-bitADC

Micron-level capture

Internal frequency division sampling
125Hz

High frequency signal capture

Anti-interference signal-to-noise ratio
SNR>65dB

Suppress environmental micro vibrations

Output cycle of vital signs
1.0Hz

Fixed frequency streaming

Physical layer communication interface
UART/TTL

Standard system level

Monitoring indicators and data output status

Core signs

Real time heart rate, real-time respiratory rate, and body movement level

In the off bed state

Judging on or off the bed

Respiratory event

Weakened breathing monitoring, snoring state recognition

Object determination

Heavy object recognition, vital sign determination

Recommended installation location

Sleep monitoring program system

The unique sleep monitoring system solution features pressure sensors and piezoelectric thin film sensors

Sensors are used to collect BCG signals of human heartbeat, while pressure sensors are used to identify information such as in bed and out of bed.

Our heart rate accuracy has been validated by the gold standard testing method of multi-channel electrocardiography (ECG), making the data reliable.

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LIFE BODY MOVEMENT SLEEP MONITOR

Sleep Monitor Device

Sleep monitoring can help people get sleep quality information, discover potential sleep quality problems,
and correct poor sleep behavior. It can also help patients find disease problems caused by sleep disorders as early as possible and
take the best time to treat the disease.

Certificate

【 Important Notice: Regarding Medical Certification 】

Please note: We provide a technology product that can be redeveloped. Our company itself does not have the qualification to apply for medical certification (such as medical device registration certificate) for final medical equipment or software.

After you complete the development of your medical application based on our product, you can and need to apply for and obtain the necessary medical certification from the relevant regulatory authorities for the complete final product developed in your own name.

The responsibility for medical compliance and certification of the product is solely borne by you as the developer and applicant.

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