Onboard Emg Sensor; Inertial Measurement Unit; Dual Mode "Ble-Base" Communication; Wireless Communication Distance - Delsys Trigno User Manual

Onboard EMG Sensor

Trigno Galileo sensors support a low noise, high fidelity sensing circuit for
detecting four EMG (electromyographic) biofeedback signals from the surface
of the skin when muscles contract. Per each EMG channel, the bandwidth is set
to 20-450 Hz and the input range of the signal is 11mV.

Inertial Measurement Unit

Trigno Galileo Sensors have a built-in 9 DOF inertial measurement unit which
can relay acceleration, rotation and earth magnetic field (compass)
information. Users can use this information to discern movement activity time-
synchronized with the EMG signals. One of 4 ranges can be selected for each
sensor to span ±2g to ±16g for accelerometer outputs and ±250°/s to ±2000°/s
for gyroscope outputs. The sensor is capable of estimating orientation in 3D
space from the 9 channels of information.

Dual Mode "BLE-Base" Communication

Trigno Galileo sensors are capable of communication with a PC-connected Base
station using the Trigno custom wireless communication protocol, or with
Android devices using the Bluetooth Low Energy (BLE) industry standard
protocol. Note that the information bandwidth when operating over Bluetooth
is limited by the Bluetooth protocol and the host device capabilities.

Wireless Communication Distance

The Trigno wireless communication scheme offers robust data transmission for
up to 16 sensors with a nominal distance of 20m. Under optimal environmental
conditions (no RF path obstructions or interfering sources), this nominal
distance can be notably superseded.

Data Synchronization

Data from each sensor and from each channel within a sensor are time
synchronized over the Trigno wireless communication protocol so no time skew
between data exists. A maximum of 4 Trigno Galileo sensors can stream data to
a host base station at one time. These features are available only when
communicating with the PC-connected Base Station; the Bluetooth/BLE
protocol does not guarantee latency.

Rechargeable Battery

Sensors contain a sealed rechargeable lithium polymer battery for multiple
hours of continuous use which can be extended when making use of low power
modes. Actual duration will depend on usage conditions, which are expected to
vary between 2 to 3 hours of performance. Charge status is conveniently
reported through the wireless communication.

Sealed Enclosure

The environmentally sealed enclosure protects the electronics from the ingress
of liquids and other environmental elements, and provides a high standard of
user safety and durability.
Trigno™ Wireless Biofeedback System
- 10 -