From Disinfection to Delivery: Why Hospital Robots Now Use M360
Analysis of M360 LiDAR advantages in hospital robot applications, including dual-echo penetration, near-blind zone, low power consumption and other core features
This year, the National Health Commission released the "Smart Hospital Construction Guidelines", requiring hospitals to accelerate intelligent construction, reduce personnel contact, and improve service quality. In the context of normalized epidemic prevention, hospital robots undertake tasks such as disinfection, delivery, and guidance, becoming an important support for medical services.
The working environment of hospital robots is very special, requiring safe operation in scenarios with dense crowds and complex spaces. Especially in areas such as corridors, wards, and operating rooms, robots must not only avoid moving patients and medical staff, but also accurately identify various medical equipment and obstacles. This puts extremely high requirements on the robot's environmental perception system.
01 Four M360 LiDAR Fusion Perception
LiDAR is the most important sensor for hospital robots. It generates 3D point cloud data by scanning the environment, helping robots build a 3D model of the surrounding environment, thereby achieving precise navigation and obstacle avoidance.
In an actual deployment in a Grade A Class 3 hospital, delivery robots use a fusion solution of four M360 LiDARs to achieve comprehensive coverage of the hospital environment. Hospital corridors are usually only 2-3 meters wide, with wards and medical equipment on both sides, and space for patients and medical staff in the middle, making the robot's navigation space very limited.
The M360's 360° horizontal field of view and 70° vertical field of view ensure that robots can detect various obstacles such as handrails on the ceiling, pipes on the ceiling, and wires on the floor. The key is that the M360's point cloud output reaches 200kHz, generating high-density 3D environmental data that helps robots accurately judge the distance and size of obstacles, avoiding collisions with patients or medical equipment.
02 Dual-Echo Penetration Technology
The perception challenges in the hospital environment are more complex than ordinary scenarios:
- Disinfectant fog interference: Hospitals use large amounts of disinfectant daily, forming fine droplets in the air. Ordinary LiDAR will be scattered by these droplets, leading to decreased point cloud data quality.
- Transparent object recognition: Hospitals have many glass doors, transparent partitions. LiDAR often has difficulty accurately recognizing these transparent obstacles, easily causing robots to collide.
- Metal equipment interference: Hospitals are full of metal equipment. X-ray machines, CT equipment, etc. will generate electromagnetic interference that affects the normal operation of LiDAR.
The M360's dual-echo technology perfectly solves these problems. It can receive forward and backward echoes respectively, penetrate disinfectant fog to see obstacles behind, while accurately identifying transparent media such as glass. Under metal equipment interference, the dual-echo mode can also provide more stable point cloud data.
03 5cm Near-Blind Zone + IP67 Protection
Hospital corridors often have various obstacles:
- Mops, cleaning tools temporarily placed
- Hospital beds, wheelchairs and other moving equipment
- Electric wires, pipes and other ground facilities
- Crowds at elevator entrances
These obstacles are often close to walls or the ground. Ordinary LiDAR has a blind zone of 10-15cm, making it difficult to detect these small obstacles. Honestly, the M360's 5cm near-blind zone ensures that robots can detect these potential collision risks in time.
More importantly, the hospital environment has high humidity and a lot of disinfectant, requiring high protection levels for equipment. The M360 achieves IP67 protection level, completely dust-proof and temporarily waterproof, enabling stable work in frequent disinfection environments. Although the MID-360 is smaller, in a high-humidity, highly corrosive environment like hospitals, the insufficient protection level is particularly prominent.
04 <4.5W Ultra-Low Power Consumption + 12~32V Wide Voltage Supply
Hospital robots usually need to work 24 hours without interruption, so battery life is crucial.
The M360's power consumption is controlled below 4.5W, saving about 30% power compared to traditional LiDAR. This means that with the same battery capacity, robots equipped with M360 can work 30% longer.
Hospital power supply systems are also complex, with different voltage standards in different areas. The M360 supports 12~32V wide voltage supply, able to adapt to various hospital power environments. The MID-360's 9~27V voltage range is relatively narrow, and additional voltage conversion circuits may be needed in special power supply environments.
05 Non-Repeat Scanning Technology
Hospital corridors usually have many detailed features:
- Wheelchair handrails
- Ground markings
- Ward door signs
- Medical equipment outlines
- Dynamic crowd changes
These small features are very important for robot positioning and navigation. The M360 uses non-repeat scanning technology, where the horizontal angular resolution can be dynamically improved to 0.18° according to scanning time, capturing these subtle environmental features. In contrast, the MID-360's hybrid solid-state technology is relatively weaker in detail resolution capability.
In actual use, non-repeat scanning technology improves the positioning accuracy of robots in hospital corridors by about 40%, especially in areas with similar features (such as continuous wards), allowing more accurate distinction of different positions.
06 M360 vs MID-360 Hospital Scenario Comparison
| Item | M360 | MID-360 | Hospital Scenario Advantage |
|---|---|---|---|
| Near-blind zone | 5cm | 10cm | Can detect obstacles close to the ground |
| Dual-echo mode | Supported | Not supported | Penetrate disinfectant fog, recognize transparent objects |
| Power consumption | <4.5W | 6.5W | Longer battery life, suitable for 24-hour work |
| Protection level | IP67 | IP67 | Resistant to disinfectant corrosion, stable operation |
| Vertical FOV | 70° | 59° | Better perception of ceiling and ground obstacles |
| Power supply range | 12~32V | 9~27V | Adapts to complex hospital power environment |
| Scan mode | Non-repeat scanning | Hybrid solid-state | Higher detail resolution, more accurate positioning |
Hospital Robot Application Scenarios
In a deployment case in a Grade A Class 3 hospital, delivery robots equipped with M360 LiDAR have been running for 6 months, completing over 100,000 delivery tasks. The robot's obstacle avoidance success rate reached 99.8%, with almost no collision incidents.
During the epidemic period, these robots undertook critical tasks such as medicine delivery, specimen transfer, and disinfection, greatly reducing the infection risk of medical staff. The stability of M360 has been fully verified in these high-pressure environments.
In addition to delivery, hospital disinfection robots also widely adopt M360 LiDAR. Disinfection robots need to operate in areas such as wards and corridors, avoiding patients, medical staff and various medical equipment. The M360's high-precision perception ability ensures the safe completion of disinfection tasks.
Looking at the actual needs of hospital scenarios, M360 has significant advantages in dual-echo penetration, near-blind zone, low power consumption and other aspects. Especially in application scenarios requiring 24-hour continuous work and complex and variable environments, the reliability of M360 has been fully verified.
Hospital intelligence is an important direction for future medical development. The M360 LiDAR, as the "eyes" of hospital robots, will play an important role in this process. As the application of hospital robots continues to deepen, the technical advantages of M360 will be fully reflected.