INERTIAL MEASUREMENT SYSTEM
DMS-E604

Inertial Measurement System

DMS-E604

Features:

  • Solid State, Strapdown System
  • Six Accelerometer Outputs
  • Low Cost, Low Power
  • Rugged, High Reliability
  • Vibration Resistant
  • Analog and RS-232 Serial Outputs
  • Two Year Limited Warranty
  • Engineering Support

Originally developed to meet the needs of automotive testing professionals, the Dynamic Measurement System (DMS) was designed for instrumenting 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.
This is a microprocessor-based inertial gyro sensor using a 16 bit A/D converter, a 12 bit D/A converter and an RS-232 interface. The analog angular rate gyro outputs have a range of ±100°/sec., and a response better than 25Hz. The analog acceleration outputs provide a range of ±10 g's and can accommodate a maximum pitch angle of ±75°, while accommodating all roll angles. The DMS uses an input of forward velocity to compensate the long term references, allowing the error correction system to work continuously. Other companies manufacture systems which turn off their corrections during high dynamic conditions causing a drift in accuracy over time. The DMS-E604 is much more useful in highly dynamic conditions, and has been designed to provide the best possible combination of reliable data and low cost.

DMS is used in automotive testing, pipeline maintenance telemetry, and vehicle dynamics applications.

Specifications

Attitude

Range: Bank±180°
Range: Elevation±75°
Resolution:0.02°Binary (14 bit)
Analog Scale Factor:18°/V±10V Output
Accuracy: Static±0.25°
*Accuracy: Dynamic±0.5%

Angular Rate

Range: Roll, Pitch, Yaw±100°/sec
Resolution:0.025°/secBinary (14 bit)
Analog Scale Factor:10°/sec/V±10V Output
Scale Factor Accuracy:±0.5%
Bias: Roll, Pitch, Yaw< 0.2°/sec (Analog)±0.02°/sec Binary (14 bit)
Non-Linearity:< 0.03%Full scale range
Bandwidth:20 Hz
Noise:< 0.02°/sec rms

Acceleration

Range: X, Y, Z±10g
Range: Fwd, Lat, Vert±10g
Resolution:4mg
Analog Scale Factor:1g/V±10V Output
Scale Factor Accuracy:1%
Bias: X, Y, Z< 10mg
Non-Linearity:0.1%Full scale range
Bandwidth:20 Hz

Environmental

Temperature: Operating-40°C to +85°C
Temperature: Storage-55°C to +85°C
Vibration: Operating5g rms20 Hz to 2 kHz
Vibration: Survival10g rms20 Hz to 2 kHz
Shock: Survival500g10mS ½ sine wave

Electrical

Frame Rate:71.1 HzMaximum
Startup Time: Data5 sec
Startup Time: Fully operational10 sec
Input Power:10 to 30VDC3.0W
Input Current:225mA @ 12VDC120mA @ 24VDC
Input Velocity: (Optional)±10VDCFull scale (±400kph)
Digital Output:RS-232
Analog Output:±10VDC
Analog Output Impedance:300 OhmPer line

Physical

Axis Alignment:< 0.1°
Size: Including Mounting Flanges6.5"W x 6.5"L x 3.00"H16.5 x 16.5 x 7.6 (cm)
Weight:45oz (2.8lb)1280 grams (1.3Kg)
Connection: RS-2329 pin female "D" subminiature
Connection: Power / Analog Outputs25 pin male "D" subminiature
*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.
•This product may be subject to export restrictions. Please consult the factory.