Bat detection methods inspire robot development

Simon Whiteley of Strathclyde’s Department of Electronic and Electrical Engineering worked with colleagues at Leeds University to investigate the techniques bats use to detect insect prey and predators.

The team used a wireless microphone sensor mounted on a tiny backpack to help listen to the sounds that adult Egyptian fruit bats make while flying. The bats ’see’ by rapidly clicking their tongues and then using the echoes to decipher the shape of their surroundings in great detail – a process known as echolocation.

The recordings revealed the complexity of the sounds that some bats emit, with each click lasting only a quarter of a millisecond.

The researchers hope that the study will enable them to use similar techniques in a variety of engineering applications.

Whiteley said: ’We aim to understand the echolocation process that bats have evolved over millennia and employ similar signals and techniques in engineering systems. We are currently looking to apply these methods to the positioning of robotic vehicles, which are used for structural testing. This will provide enhanced information on the robots’ locations and hence the location of any structural flaws they may detect.’