Dynamic Measurement Sensor

DMS LTD (options)

Originally developed to meet the needs of automotive testing professionals, the Dynamic Measurement Sensor (DMS)and Inertial Measurement Sensor were 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 is much more useful in highly dynamic conditions, and has been designed to provide the best possible combination of reliable data and low cost.

Applications:

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

Features:

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

 

Inertial Gyro Sensor DMS-LTD Specifications*
Rate Range	±100°/s
Rate Accuracy	±2% Full Scale
Rate Resolution	<0.05°/sec.
Acceleration Range	±10 g
Acceleration Accuracy/Bias	±0.5% Full Scale
Acceleration Resolution	<5 mg
Angle Accuracy	0.3° Static, 2% Dynamic**
Pitch Range	±75°
Frequency Response	DC-25Hz
Sensor Alignment	<0.2° Error-All Sensors
Velocity Input	±400 kph (±10V) velocity (+forward)
Digital Output	RS-232 serial communications (adjustable baud rate)
Shock Resistance	500 g
Weight	<4 lbs.
Power	+10VDC to +30VDC, <4.5 Watts
Size	See Drawing
Temperature Range	-30°C to +65°C
* Subject to change without notice.
** Assumes accurate velocity data.

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