the impulse “switch” 1daniel overman dis5274/10/2010
TRANSCRIPT
Daniel Overman DIS527 1
the Impulse “Switch”
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What is an Impulse Switch?
• Impulse is an EMG (Electromyography) sensing switch i.e. senses tiny voluntary muscle contractions.
• Impulse detects and wirelessly transmits the EMG signal to a Bluetooth receiver.
• Specialized software in a Windows PC processes the signal as a traditional switch or click of the mouse.
• Combining this wireless connectivity with accessibility programs allows users to control their computer with the smallest of muscle activity.
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The “Switch”
Indicator Light
Connection Button
The EMG sensor
Blue Tooth USB InterfaceDisposable Electrodes
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Impulse States• Standby:
– Standby Mode occurs when the Impulse is charged, and no lights are on.
• Transmitting:– Transmitting Mode occurs when the Impulse is turned on and the blue
light flashes once every second.
• Pairing:– Pairing Mode occurs when the Impulse is being paired with a computer.
• Charging:– Charging Mode occurs when the Impulse is plugged into the charger.
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Charging the Sensor
Impulse EMG Sensor
AC Power Charger
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Charging
• Fully charge the Impulse prior to use.
• The Impulse needs to be put into Standby Mode in order to charge
• If the Impulse is not in Standby Mode during charge, it may cause undesirable operation.
• A red light indicates the device is connected to the charger.
• The red light will turn off when charge is complete.
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Installation
• PC Compatibility: PC or compatible computer running Windows® XP (Service Pack 2) or Windows Vista™. Requires
• one available USB 2.0 or 1.1 port.
• Do not plug Bluetooth adapter in until prompted to do so.
• Close all software and disable anti-virus software.
• Insert Impulse CD and follow prompts. This will check and install the following programs:
– .NET
– Impulse Software
– Toshiba Bluetooth Stack (Bluetooth Driver)
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Initial Setup
Impulse Software Window
Click “Link Manager” to Pairing Windowaccess the pairing window
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Pairing Window
“Pair New” Button
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Pairing the Impulse Sensor
• Start by click “Link Manager.”
• Click “Next” once the sensor is in Pairing Mode (blinking blue and red), and then click “Pair New” to begin pairing the sensor.
• Once the device is paired, the Impulse software will read “Connected” and the sensor will stop blinking red and blue.
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Sensor Location
• The Impulse sensor should be placed over a muscle that the user has control of.
• The Impulse Sensor should be placed in the center of that muscle, parallel to the muscle fiber for optimum EMG sensing.
• Proper site preparation is essential to obtain a good EMG signal.
• See following examples
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Forearm Position
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Forehead Position
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Jaw Position
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Mounting sensor
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Placing
• Electrodes are single use and disposable.
• The contact surfaces are pre-gelled with a hypo allergenic gel that is water soluble.
• When applying the electrode, it is critical to obtain a good skin to electrode contact.
• Hair can interfere with the contact.
• Clean the desired placement site with an alcohol wipe.
• Remove the adhesive backing from the electrode and place it securely on the user. (The metal snaps face away from the skin.)
• Snap the Impulse EMG sensor onto the electrode.4/10/2010
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Calibration
“Auto Calibrate” button
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Auto Calibration
• Click “Auto Calibrate”
• When prompted, contract and relax the muscle site several times until the screen reads “Finished Calibrating”
• The EMG levels have now been determined.
• These settings will be saved and calibration should not be necessary on a daily basis.
• Note: If you have poor connection of the electrode to skin then the signal from the Impulse to the computer can take several minutes to stabilize.
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Advance Settings
Impulse Software Window
Click “Advanced Settings” to access Advanced Settings4/10/2010
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Advance Settings
Advanced Settings Window
Simulated Actions with Primary Action
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Assigning Functions
• Simulated Actions with Primary Activation:– Determines how you the Impulse responds when
you first activate.
• Simulated Actions with Secondary Activation:– Lets you change how you want the Impulse to
respond when you initiate 2nd level activation. (“Play Alarm” is selected by default).
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Threshold AdjustmentLeft most + button will set the threshold bar by increments of 10.
Right most + button will set the threshold bar by increments of 1.
Color Dot:Blue – Not Activating Primary ActivationRed – Activating Primary ActivationThreshold number can be set from 1 to 100.
Right most - button will set the threshold bar by decrementsof 1.
Left most - button will set the threshold bar by decrementsof 10.
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Impulse Help• Manual Button:
– Launches PDF manual that is installed on your computer.
• Email Support:
– Launches your email client with AbleNet’s Impulse Technical Support email address in the “To” field. We will
• Contact Information:
– Call Technical Support during normal business hours for support. If needed a qualified technician can connect remotely to your computer to assist you using the “Request Remote Support” link.
• Request Remote Support:
– Allows a qualified technician to assist with setting up the Impulse software. This link will give the technician the ability to control your computer remotely.
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Advanced Features not Presented
• Advanced Calibration
• 2nd Level Activation (Alarm Input)
• Advanced Settings
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Summary• If you have never done a Windows PC device install, it’s likely you will need Tech
Support
• If experienced with device installation…this may be a little tricky but nothing unusual.– place sensor in transmit mode and not connected to the consumer before launching Impulse
software.
• Actual program displays and controls may be unfamiliar to non-technical users.
• Installation and initial debug required about three hours…for me
• This is a sophisticated high tech device that provides “switch” activation from only the slightest of muscle movement.
• The “price” and “prize” are appropriately proportional!
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On Screen Demo• On Screen Keyboard
– http://www.imgpresents.com/
• Camera Mouse– http://www.cameramouse.org/
• Impulse Switch– http://www.ablenetinc.com/
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