The tele-operated robot may be deployed at hazardous, difficult and enemy intruded areas and controlled from a safe region. The structure of the spherical robot has many advantages over conventional mobile vehicles or humanoids. The ball shape of a spherical robot enables rolling in any direction on planar surfaces. Sensors and other electronics are completely inside the shell.
It is robust to the collisions and can manoeuvre in any direction. The camera mounted on the robot provides a real- time panoramic 360 visual feedback that provides awareness to the situation. The visual feedback transmitted to the operator also enables him/her to control the robot’s movement. A manually operated spherical robot has been designed that provides visual feedback for reconnaissance and search. The design of the robot can be easily modified to add sensors for collecting application specific information to the operator.
The current prototypes have following technical specifications:
Specifications | Football-size | Palm-size |
---|---|---|
Diameter | 20 cm | 10 cm |
Max. Speed | 20 cm/sec | 20 cm/sec |
Endurance | 1 Hour | 40 mins |
Pendulum weight | 200 gms | 50 gms |
Vision | Monocular camera H-FoV 62.2 degree V-FoV 48.8 degree |
Fish-eye camera 200-degree FoV |
Processing board | Rpi 3 model B has ARM Cortex-A53, SoC- BCM2837. It consists of a Broadcom processor BCM2387 Chipset. | Rpi Zero W which has 1GHz single-core ARM11 CPU Broadcom (BCM2835) |
Orientation sensors | Present (MPU9265) | Present (BNO055) |
Wifi communication with Android App | The processor board also supports 802.11 b/g/n wireless LAN, Bluetooth Low Energy, and Bluetooth 4.1 Classic. | Broadcom BCM43438, the processor board also supports 2.4GHz 802.11n wireless LAN, Bluetooth Low Energy, and Bluetooth 4.1. |
In summary variants of designed spherical robot can be fabricated based on the application by varying sizes and providing following facilities:
– Incorporating application specific sensors
– Wireless communication modules to collect video and audio feeds
– Payload carrying capability
– Easy deployment option
– Low cost solution