Biomedical Engineering Reference
In-Depth Information
DAQ
Power
Supply
FSR
Driver
Board
Linear
Actuator
Figure 11.2
Photograph of the tactile display including: linear actuator, force-sensitive resistor
(FSR), data acquisition card (DAQ), and driver circuit (See Plate 21)
FSR
cap
Linear
Actuator
Figure 11.3
The linear actuator, FSR, and Plexiglas cap (See Plate 22)
position of the shaft with an error of less than 0.5 mm. The specifications of the linear
actuator from Firgelli Technologies Inc., are presented in Table 11.1.
11.3 Force Sensor
A force-sensing resistor (FSR) is a device that consists of a polymer thick film (PTF)
the resistance of which decreases in proportion to the force applied to its active surface.
This device is extensively used in human touch control of electronic devices. Figure 11.4
demonstrates the structure of the sensor and its different components.
