Glove Pressure Mapping System
The Glove Pressure Mapping System (GPMS) is a multi-sensor hand force data acquisition system that consists of an Ultrathin Glove Mat and a Computer Interface. The GPMS incorporates the ISS sensors in 20 and 24 sensor configurations. The sensor locations can easily be modified by the customer and are mounted using double-sided tapes. The individual sensors are covered with a Teflon coated laminate which makes them more durable.
The GPMS has various ergonomics applications including hand-tool analysis, design and research, as well as clinical applications.
Twenty and twenty-four sensors are used in the standard configurations that results in a sampling rate of over 100 Hz. They are calibrated with a known load in a calibration jig. Variation coefficient (which is the standard deviation expressed as a percentage) is within acceptable quality control range of ± 10%.
The computer interface is designed to gather and store sensing data separate from the computer. It can be worn by the subject on a nylon web belt.
Menu controls in the software control the speed interval of scanning in Remote Mode, from minutes to hundredths of second (the system can scan at up to 3072 sensors per second). The number of scans stored in the buffer is dependent on the number of sensors. For instance a seat of 256 sensors results in 448 scans stored or 114,688 data points. A glove of 20 sensors could store approximately 5734 scans. For more data collection a 4 Meg memory expansion module is available.
Remote sessions are controlled by a white button at the rear of the computer interface or with a switch that plugs into the RJ45 port, also at the rear. Toggling either switch will start the scanning, which is confirmed by the red led on the front of the interface. You can start and stop as often as you wish during a session. Each start/stop is signified in the download data with a complete red scan as a divider.
Download speed is dependent on the size of the number of scans taken in remote mode but typically is only a few seconds. The serial port connection functions at 115200 baud.
A 9-volt alkaline battery powers the unit in Remote Mode. More power is consumed on data download than while scanning. Also if you plug the AC/DC adapter in before download battery life is preserved.
Gloves are designed to fit both left and right hands (ambidextrous) and can be ordered in various sizes as shown below:
| Standard Glove Size |
Ambidextrous Glove Size |
| 6 |
X-Small |
| 7 |
Small |
| 8 |
Medium |
| 9 |
Large |
| 10 |
X-Large |
 How to Measure for Proper Sizing
Take a measuring tape and wrap around the hand over the knuckles. Do not measure the thumb. The reading should be made in inches. The number of inches around the hand will be the approximate glove size. If your hand measures 7 inches, you would typically wear a size 7 glove.
Mat Material: Fabric sensors mounted on a flexible glove
Sensing Area: 20 or 24 sensors of .25" X .25"
(additional sensors can be added on special order)
Sensor Size: .25" X .25"
Mat Thickness: 0.36 mm (0.014")
Sample Rate: 3072 sensors per second
Calibrated Pressure Range: 0-100 Psi
Accuracy: Variation Coefficient* less than 10%
or approximately ± 10 mmHg
*Variation Coefficient is the Standard Deviation expressed as a percentage.
Computer Interface:
Dimensions: 4 cm x 14 cm x 15 cm
Weight: 490 g
Input: two 34-pin Insulation Displacement Connector
Output: RJ-45 (8-wire cable)
Power Supply:
- 9-volt, 500-mAmp AC/DC converter or 9-volt disposable DC battery
- Indicator lights for power, diagnostics and scan rate
- Built in trigger for initiating remote reading
Additional Hardware:
- Manual Trigger
(90 cm long RJ-45 momentary contact trigger switch)
- Calibration system
Optional Extras:
- Additional 4 Meg memory for increased storage on interface during remote scans
- Web belt (holds interface and remote trigger)
- Telemetry
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