The Implantable Inertial Sensor (IIS) is a wireless accelerometer and gyroscope encapsulated in epoxy and silicone. It is designed for short-duration experiments devoted to the study of how animals move. It may be implanted subcutaneously in a rodent or attached extracutaneously to a fish. The IIS is equipped with a 30-mm loop antenna that works well when immersed in water or implanted in an animal. It uses the same telemetry system as our Subcutaneous Transmitters (SCTs). We turn the IIS on and off with a magnet.
The IIS can be configured to provide a variety of measurements and equipped with a variety of batteries to produce a range of operating life and mass. The A3035A1 is 1.8 g with operating life 40 hrs. It transmits on six telemetry channels at 128 SPS for each channel: rotation x, y, z range ±5.6 rev/s and acceleration x, y, z, range ±160 m/s/s. The A3035B1 is alwo 1.8 g, but disables the gyroscope and transmits only acceleration x, y, and z at 128 SPS. Its operating life is 150 hrs.
The IIS is not intended to serve as an activity monitor. Activity monitoring is a far less demanding measurement. Our Intraperitoneal Transmitters (IPTs) provide a built-in accelerometer that can be configured for efficient activity monitoring. Alternatively, if you are recording biopotentials with implanted subcutaneous transmitters, you can measure the activity of your animals with our Animal Location Trackers (ALTs).