Beaver is a miniature micro-rover for remote sensing applications. The low mass, autonomous Beaver is ruggedized for harsh environments and suited to a wide range of mobile applications, including terrain characterization and mapping, mineral and resource exploration, and magnetic, thermal and visual inspection. Beaver is available in space qualified hardware for lunar and planetary exploration. The space grade Beaver rover has components specially selected for compatibility with space environments. Each Beaver rover and all subsystems are thermal vacuum and vibration tested for use in space and delivered with test certification.
Beaver Rover Features
- Power-efficient, heritage ARM-based onboard computer
- Customized, integrated HD camera upgrade
- Artificial intelligence (AI) features, including automated terrain guidance, Bayesian decision
- making and map making
- Autonomous obstacle-avoidance capability
- Autonomous safe operation mode retraces rover trajectory in the event of lost communications
- Solar-panel powered with regulation and conservation modes
- Watchdoor timer reset
- Communication to base-station via 900 MHz mesh networking
- Capacity for three 250 g payloads
Beaver Technical Specifications
The following table provides technical details for the Beaver rover.
Table 1 Technical Specifications, Beaver Rover
The Beaver rover operates by telecomand using a wireless radio link with a horizontal range of 1 km using a transmitter of 10 mW. The communications link can sustain an asynchronous bi-directional digital channel of 9600 baud. The rover stores and forwards instrument data packets utilizing up to 50% of the communications link. The rover communicates during transit and up to initial docking over an umbilical connection containing a maximum of nine power, digital and serial communications lines.
The Beaver rover is capable of reaching speeds up to 0.1 m/s on level terrain and advancing 250 m per day. The vehicle can ascend slopes of up to +-35o and is capable of transiting obstacles of up to 0.05 m. The Beaver implements an autonomous terrain-avoidance system to circumnavigate unexpected hazards. The vehicle autonomously recovers from radio shadow obstacles and can implement a semi-autonomous route planning system and event scheduler to store and execute command sequences that initiate rover and payload operations.
The Beaver rover can survive over a temperature range of –50 oC to 65oC as recorded at the chassis during launch and transit to the Moon. The rover shall be qualified to 13 g random and sinusoidal loads administered for two minutes on three orthogonal axes. The unit will be certified to survive shock test 150 g for 35 ms.
The Beaver rover has an integrated VGA camera system in the standard version. Thoth is pleased to offer an upgraded, customized high definition camera integrated with the Beaver with 720p for high resolution imaging of the lunar environment. This compact camera has low mass of 220 g and a frames-per-second specification of 3 FPS with a 20 FPS burst mode. Beaver can also accommodate up to three payload units of dimensions 50x50x80mm and mass 250 g each unit. Each instrument is supplied with a 5 W power and two 115 Kbs max rate serial communications channels on a duty cycle such that 25% of power is available for payload operations.