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Information

About the HaptiComm Project

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Key Features

 

 

 

 

 

 

Key Features of the Hardware & software

Hardware

-         Flexible design and implementation
As the HaptiComm hardware platform is predominantly 3D printed this allows us to modify the design for personal preferences. The mounting system which contains the actuators and supports the user’s hand can be modified for material, size, shape, actuator layout and number of actuators.

-         Washable
The components of HaptiComm (except for the electronics) are washable and easily replaceable as the system is designed for extended use (exceeding 1 hour). Parts that come into direct contact with the hand (the cover for the mount and the actuator tips) are also able to be modified in shape and material allowing for maximum amount of comfort in the user’s hand(s).

-          Rapid Response
HaptiComm has an almost instantaneous response with each actuator rising over a 15ms span. Individual actuators can deliver a maximum of 14 tap sensations per second. Each actuator has the capacity to oscillate at various frequencies up to 3000Hz (approximately) with a refresh rate of 10KHz (theoretical) or higher dependant on the interface speed.

-         Independent or simultaneous drive
Currently the HaptiComm supports up to 31 actuators in its array with each being capable of being driven independently or simultaneously. In addition, they are all able to accept a separate waveform pattern (taken from a wav file) to allow for different sensations to occur in different locations at the same time.

-         Distinctive sensation generation
T
he design decouples the actuators from the out section of the device allowing for each actuator to be activated as a distinct part. “Echo” or vibratory propagation is kept to a minimum.


Software

 

-         Rapidly reconfigurable
HaptiComm uses a configuration file system which allows it to be rapidly changed between the sensations/patterns it attributes to each letter, word or concept. This also allows for the building and saving of personalised tactile “dictionaries” to cater to the broad range of individual preferences.

-         Modifiable variables
The software allows us to modify the timing variables, impact pressure and frequency oscillation of the actuators. Modifications are dependant on a wav file (waveform file) and are currently generated using Audacity.

 

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Last Modified: August 8th, 2018