Service and Support

Key FAQs

• Q: How does non-contact monitoring work?

  +
  BCG Technology

  When the heart ejects blood, the human body's gravity changes. Our medical-grade piezoelectric film sensors can capture the gravitational changes caused by blood ejection, thereby forming a cardiac impulse diagram (i.e. Ballistocardiogram).

• Q: Can you place anything on top of the device while using?

  +
  Yes, you can. The device is placed on top of the mattress, and on top of the device, you can place another extra layer of mattress topper, or bed sheet, or both. However, please make sure the overall thickness of the layers placed on top of the device do not exceed 3cm to ensure the data accuracy of the health parameters collected.

• Q: What is HRV and why is HRV important for general users?

  +
  Heart rate variability (HRV) is essentially the variation in the time interval between two consecutive heartbeats. It is controlled by the Autonomic Nervous System. 

  
  

  HRV reflects the overall health status of the body, including both physical and psychological health status through four indices: emotional stress, autonomic (ANS) balance level, recovery from fatigue ability, and cardiac stress tolerance level.

  
  

  HRV is an important indicator of the body's truest physical and mental health. Studies at Stanford University, Harvard Medical School and other institutions have shown that changes in HRV are correlate with certain chronic illnesses, sleep disorders, depression, autonomic nervous system disorders, arrhythmia, sub-health status, and chronological age.

• Q: How does it detect safety risks in different application scenarios?

  +
  a. Individual users at home or Domiciliary care providers

  Our system has two types of abnormality alerting mechanics. The first one is proactive alerting, where the user him/herself can press the SOS button on the controller to manually send out the alarm message. However, when the user no longer has the ability to operate manually, the product system will automatically send out alarm messages to families or caregivers as soon as it detects abnormalities, such as an excessive bed leaving time could indicate unexpected falling situation when going to the toilet during the night/prolonged sleep apnea duration time, etc. 

  b. Care institutions 

  Users in the care institutions can be monitored on a central monitoring system (CMS), which enables the caregivers to monitor multiple beds at the same time. This assists them to get hand of the emergency situations better and easier. Moreover, it helps the institution to re-allocate human resources. Through continuous monitoring of patients’ status, the staffs can provide more attention and follow-ups on those who just received an operation, ensuring more efficient care services.  

• Q: How do LANGZHI products achieve health management?

  +
  LANGZHI's health management system revolutionizes proactive care through medical-grade non-contact monitoring, establishing personalised health profile based on continuous HRV tracking, sleep apnea, and AHI index. 

  By monitoring HRV 24/7, we map your autonomic nervous system patterns to reveal critical health connections, such as cardiovascular risks, mental health shifts, and metabolic health. Our HRV analysing system also generate easy-to-read health trend curves, helping you visualise physical strain, recovery capacity, and overall wellness evolution overtime.

  Through an overnight respiration condition, snore mapping and AHI index, we detect and classify four breathing disorders during sleep:

  - Obstructive apnea (OSA)

  - Central apnea

  - Mixed apnea

  - Hypoventilation

• Q: How does LANGZHI products outperform wearable devices?

  +
  1. Non-contact Monitoring vs. Wearable Discomfort

  • Smartwatches or wristbands:

  Require 24/7 wrist wear, causing pressure discomfort. Elderly users often forget to wear and charge them. 

  • LANGZHI digital care products:

  Placed under sheets and captures data automatically with zero physical contact.

  
  

  2. Medical-Grade Precision vs. Fitness-Tracker Estimates

  • Smartwatches or wristbands:

  High error rates (e.g. heart rate has an error range of ±15 BPM); suitable only for basic activity tracking.

  • LANGZHI digital care products:

  With clinically proven data calibration (West China Hospital/Sichuan Provincial Hospital), our products achieve ≤5% error for night-time vitals. 

  
  

  3. Sharable health data vs. Isolated data

  • Smartwatches or wristbands:

  Data confined to personal apps. Real-time health data and abnormality alerts cannot be shared among family members and care providers.

  • LANGZHI digital care products:

  Sharable health data and emergency alerts to relatives or caregivers, including personalised daily/weekly/monthly health progress reports.