IP67 version of the DSP beacon. 915MHz only (868MHz with limited radio range possible). 433MHz not available and not planned.
Note, that we haven’t received a formal IP67 certification, yet. The IP67 requirements are fulfilled by design and are verified by the water submerging test – 30 min under 1m of water doesn’t kill the device.
The ultrasonic microphone is protected with a special IP67 membrane. All internal compartment (electronics, battery) is fully covered by a water- dust-protecting compound. USB connector is not protected. Thus, it is recommended to install the beacon so that the USB is at the bottom – to minimize impact on the connector itself, because electronics and battery is fully sealed.
The DSP Beacon can be used in both the Non-Inverse Architecture (NIA) and in the Inverse Architecture (IA):
Marvelmind Indoor Navigation System is an off-the-shelf indoor navigation system designed to provide precise (±2cm) location data to autonomous robots, vehicles (AGV), drones and forklifts. It can also be used to track other objects that the mobile beacon is installed upon, for example, virtual reality (VR) systems, helmets for construction workers or miners, jackets, etc. in Inverse Architecture: https://www.youtube.com/watch?v=I53mEx7lQ-0
The navigation system is based on stationary ultrasonic beacons that are united by radio interface in a license-free band (915MHz). The location of the mobile beacon is calculated based on the propagation delay of an ultrasonic signal (Time-Of-Flight or TOF) to a set of stationary ultrasonic beacons using trilateration. With reduced radio capabilities (10-20m – still OK), the 915MHz (license-free US-band) beacons can be used in 868MHz (license-free EU band). In the future, we will have 868-MHz version of the DSP beacons.
Key requirements for the system to function properly:
The DSP beacon HW 5.xx differs from regular Beacon HW v4.9 in several ways:
Distance between beacons
Location update rate
Power supply and battery lifetime