LiDAR is an optical sensor for distance measurement and has become an indispensable sensor in the visual perception system of autonomous mobile robots and driverless ground and aerial vehicles. However, the existing commercial LiDARs have a limited field of view (FoV). This shortcoming makes a single unit of these LiDARs incapable of seeing the entire immediate space around the robot or vehicle.
Setup using multiple-LiDARs for complete coverage is costly (even costlier than the vehicle in many cases), and is visually unpleasant. In the case of drones, where 3D collision avoidance is a basic and critical functionality, the limited space and onboard resources, plus the complex geometry of the machine makes it impossible to use the existing sensors for omnidirectional collision avoidance.
The technology provider has developed a patented distributed LiDAR technology which allows omnidirectional visibility.
Currently, the technology developed is the only practical solution for drones (UAVs) for “omnidirectional collision avoidance”. Precise distance and temperature reading (self-calibrated) makes it the perfect solution for thermal screening. Coverage of the entire field of view (all the blind spots) makes this sensor the perfect solution for autonomous automotive tasks such as autonomous parking sensory system.
The flexible structure of the sensor also makes it an ideal solution as a “safety curtain with the desired geometry” for industrial robots. As the sensor is embedded in the platform structure (drone, car, service robot, etc.), it is also an aesthetic solution.
Technical specifications:
- Distance coverage: 2.5m with potential to extend further
- Sampling rate: 10 Hz
- Type of photodetector used: SPAD (single photon avalanche diode)
- Resolution/Accuracy: 1 mm reading resolution and 1 cm accuracy
- Power: The sensor has built-in battery (optional) which recharges through USB. It could also be powered via carrier equipment for operation
- Communication: Option of USB RS-232 (wired option) or Bluetooth RS-232 (wireless option). WLAN and RS-485 could be provided on request
Advantages & innovations
Advantages of the technology include:
- Uniform scan across all directions for the entire field of view is possible
- Colour and temperature sensing
- Distributed sensors (fiber optic probes) can be embedded into the body of the platform with density customised in different directions.
- Motorless design so it is insensitive to vibration and causes no vibration as well
- Probe's lifetime is not affected by moisture or sunlight
- Very cost effective as one sensor covers the entire space around the vehicle
- Visually pleasant as it is hidden in the body of the carrier
Stage of development
Under development/lab tested
Partner sought
The Singapore institute of higher learning is interested in the following types of partnerships with MNEs or SMEs of all sizes:
i) Licensing agreement - The partner could license the technology for further development and introduce it to its customers.
ii) Commercial agreement with technical assistance - The partner could utilise the technology with technical support from the technology provider.