Name
Abstract | ||
|---|---|---|
In this paper, we explore key design parameters for integrating fluidic logic and actuators for a very-large shape display for application in braille and tactile graphics. We present a simple model of pressure-controlled flow valves, which are analogous to electric transistors. The model is used to highlight the design of a valve that achieves hysteresis (noise immunity) and pressure-gain (signal propagation), both critical goals for creating fluidic logic circuits. Empirical results from a family of valves fabricated with graded design parameters and assembled in a logical NOT gate configuration back up the model. A pressure-gain of up to 26 kPa is achieved for a 80 kPa pressure supply, enabling the output of any logic gate to serve as the input of another in a sequential logic operation. Using the pressure-gain valves, we successfully built a latching memory unit that can be integrated with a pneumatic actuator capable of driving a braille pin. The design is sufficiently scalable and manufacturable to support the realization of a large dense array of pins at braille spacing. |
Year | DOI | Venue |
|---|---|---|
2015 | 10.1109/WHC.2015.7177710 | 2015 IEEE World Haptics Conference (WHC) |
Keywords | Field | DocType |
pressure-controlled flow valve design,refreshable tactile display,refreshable braille display,RBD,fluidic logic,logic gate,sequential logic operation,pressure-gain valve,latching memory unit,pneumatic actuator | Fluidics,Logic gate,Pneumatic actuator,Sequential logic,Computer science,Control engineering,Electronic engineering,Transistor,Electronic circuit,Braille,Electrical engineering,Actuator | Conference |
Citations | PageRank | References |
4 | 0.73 | 2 |
Authors | ||
4 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Alexander Russomanno | 1 | 12 | 2.63 |
| R. Brent Gillespie | 2 | 307 | 53.79 |
| Sile O'Modhrain | 3 | 519 | 47.94 |
| Mark Burns | 4 | 5 | 1.10 |