Dynamic Measurement System
with Dual Antenna GPS
DMS-EGP02
Description:
Originally developed to meet the needs of automotive testing professionals, the
Dynamic Measurement System (DMS) was designed for monitoring the drive and handling
characteristics of vehicles. The DMS may be used in almost any application where triaxial
angular rate and acceleration data is required. This inertial sensor provides both angular rate
and acceleration outputs in analog and digital formats. The DMS features six accelerometer
outputs. The X, Y, and Z axis outputs represent the accelerations in the plane of the vehicle
body, while the second set of three outputs measure the acceleration aligned with an earth-level
coordinate system. This allows forward and lateral acceleration measurements that are
essentially free of gravity influences. The triaxial sensor set allows software alignment of
sensors, greatly reducing any alignment errors. The serial interface is highly configurable and
provides access to almost all operational parameters.
The DMS-EGP02 is designed to be used in vehicle applications where accurate heading
is required, but a magnetic compass is infeasible. This sensor is equipped with a dual GPS antenna
system that provides heading data even when the vehicle is not is motion. The addition of the GPS
antennas also gives vehicle velocity data to the DMS which enhances the unit's performance during
highly dynamic maneuvers such as sharp turns. This makes the DMS-EGP02 inertial gyro sensor a more complete
system since it does not require velocity information to be supplied from an external sensor.
Applications:
The DMS-EGP02 is useful in automotive testing, vehicle dynamics, and marine
applications. This sensor can be used as a replacement for the Watson
IMU-E604, and is most useful in applications where
strong magnetic fields make heading data from a
fluxgate magnetometer unreliable.
Features:
| • Solid State, Strapdown System |
| • Six Accelerometer Outputs |
| • GPS Heading Reference |
| • Low Cost |
| • Rugged, High Reliability |
| • Vibration Resistant |
| • Analog and RS-232 Serial Outputs |
| • Two Year Limited Warranty |
| • Engineering Support |
Inertial Gyro Sensor
DMS-EGP02 Specifications |
Attitude |
| Range: Bank | ±180° |
| Range: Elevation | ±75° |
| Resolution: | 0.02° | Binary mode (14 bit) |
| Analog Scale Factor: | 18°/V | ±10V Output |
| Accuracy: Static | ±0.25° |
| * | Accuracy: Dynamic | ±2% |
Heading |
| Range: | 0° - 360° |
| Resolution: | 0.02° | Binary mode (14 bit) |
| Analog Scale Factor: | 18°/V | ±10V Output |
| Accuracy: Static | ±0.5° | Using GPS |
| * | Accuracy: Dynamic | ±2% | ±0.05°/sec (without GPS) |
Angular Rate |
| Range: Roll, Pitch, Yaw | ±100°/sec |
| Resolution: | 0.01°/sec | Binary mode (14 bit) |
| Analog Scale Factor: | 10°/sec/V | ±10V Output |
| Scale Factor Accuracy: | 1% |
| Bias: Roll, Pitch, Yaw | < ±0.02°/sec |
| Non-Linearity: | < 0.03% | Full scale range |
| Bandwidth: | 20 Hz |
Acceleration |
| Range: X, Y, Z | ±10g |
| Range: Forward, Lateral, Vertical | ±10g |
| Resolution: | 4mg |
| Analog Scale Factor: | 1g/V | ±10V Output |
| Scale Factor Accuracy: | 1% |
| Bias: X, Y, Z | < ±5mg |
| Non-Linearity: | < 1% | Full scale range |
| Bandwidth: | 20 Hz |
Environmental |
| Temperature: Operating | -30°C to +60°C |
| Temperature: Storage | -55°C to +85°C |
| Vibration: Operating | 5g rms | 20 Hz to 2 kHz |
| Vibration: Survival | 10g rms | 20 Hz to 2 kHz |
| Shock: Survival | 500g | 10mS ½ sine wave |
Electrical |
| Frame Rate: | 71.1Hz | Maximum |
| Startup Time: Data | 5 sec |
| Startup Time: Fully operational | < 60 sec | Typical |
| Input Power: | 10 to 30VDC | 8.1W |
| Input Current: | 675mA @ 12VDC | 338mA @ 24VDC |
| Input Velocity: (Optional) | ±10VDC | Full scale (±400kph) |
| Digital Output: | RS-232 |
| Analog Output: | ±10VDC |
Physical |
| Axis Alignment: | < 0.1° |
| Size: Including Mounting Flanges | 6.5"W x 6.5"L x 3.75"H | 16.5 x 16.5 x 9.5 (cm) |
| Weight: | 54oz (3.4lb) | 1530 grams (1.5Kg) |
| Connection: RS-232 | 9 pin female "D" subminiature |
| Connection: Power / Analog Outputs | 25 pin male "D" subminiature |
| Connection: GPS (Qty 2) | SMA |
| * |
Using velocity data with GPS mode on.
Actual accuracy can be calculated as the listed percentage multiplied by the change in value over the entire dynamic maneuver. |
| Specifications are subject to change without notice. |
|
Dynamic Measurement System
DMS-EGP02 Dimensions |
 |
|
Inertial Sensor
DMS-EGP02 GPS Antenna Dimensions |
 |
|
DMS-EGP02 Axis Description |
 |
 |
