SENSORS M Inc.
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MEMS Angular Rate Sensors
FPGA Real Time Processing
 An Accurate, Reliable & Low Cost Angle Sensing/Control Solution

           arrow3i
                  ANGLE MEASUREMENT & CONTROL MODULES   


Integrates Gyro Rate Data to Angle with Very Low Bias Drift

 Platform Stabilization
Platform Position 







Rotary Dispenser
Rotary Dispenser
 Angle_Rate Measurement
 Forklift Location
Forklift Location







BioMechanics
BioMechanics
[more]


TT MEASURE LARGE ANGLES (to 1023°)
TT EVENT CAPTURE (Step & Hold)
TT ZERO REFERENCE (IR Detector)  

TT  VERY LOW BIAS (0.005°/SEC.)
TT COMMANDED TO ANGLE TT Quick Data Capture to Laptop


Arrow3i leverages advanced MEMS Gyro technology:
Measures angular displacements up to  ±1023° with 0.03° resolution. 
Three bias compensation techniques achieve very low bias drift vs. time. 
A Zero or Reference position IR detector provides both recalibration of a zero or reference position and removes accumulated bias. 
SPI BUS outputs rate signal and the computed difference between a Commanded-To and the current measured angle supporting a controller loop implementation. 
Operates Instantly and data can be captured to a laptop using inexpensive USB Logic Analyzer


 Block Diagram
Angle, Rate, Difference, Zero °
& Reference Position


Measures
Angular Rotation up to  ±1023 ° 
Angular Rate ± 300 °/sec. max.
IR Detector Indicating a Zero Reference Position
3 Bias Compensation Techniques
 - with Bias Compensated to  <0.005 °/Sec. typical 
Output
LCD Display ± 999 °
SPI Bus
   Data Out (MOSI)
     Accumulated Angle ±1023 °
        -16 Bit 0.03°/sec. Resolution
    Angle Rate - 16 Bit 0.03 °/sec. Resolution 
     Angle Difference
          (Current Angle -Commanded-To Angle)
      Zero/Reference Indication

Data In (MISO)
Commanded To or Reference Angle
  16 Bit 0.03°/sec. Resolution Min.
Control Word
 Logic Controls
Bias Compensation/Removal (2 Second Sample)
Reset LCD Display
Reset
Event Capture/Hold 
Zero Reference Bias Compensation


blue Features Incorporated in All Models               

Angle Measurement
+1023/-1024 ° Max.
Angle Difference
+2047/-2048 ° - Resolution 0.25 °                   
Angle Display
±999° Max.
IR Detector
940 nm Reference or Home Position @ 0.0°
Command-To Angle 
+1023/-1024 ° 16 Bit 0.03 °
Bias Compensation
512 Samples (2 sec.)  @ Zero Motion Condition
         Zero Reference Bias Compensation
         Both Bias & Zero Reference Compensation
         Event Capture

Applications:  Rotary Dispensing, Surface Vehicle Tracking, Vane Control, Robotic Like machines, Rotary Positioning & Placement,  Angle Rate Controllers, & Digital Resolver

Sensors M Inc.  East Amherst NY 14051  2010
www.arrow3i.com