CFA-130IC

Compact, Rugged & Cost Effective
Fiber Optic Heading Reference

ACCURACY AT WORK FOR CIVIL ENGINEERING & GEO REFERENCE APPLICATIONS

The CFA-130IC 3-axes FOG (fiber optic gyro) attitude and heading reference system has been designed to provide a cost effective, accurate geo-reference in harsh conditions wiithout the need for an external GPS signal. The small size/volume makes it ideal for manual positioning in difficult physical locations.

Operation is based on inertial principles of initial gravity levelling using built-in-accelerometers followed by geodetic heading calculation using the 3-axes gyroscopes. this alignment process requires 5 to 12 minutes dependent on latitude.

After inertial alignment the CFA-130IC gives continuos outputs of Heading. Roll and Pitch to enable subsequent movement of the target equipment to the required physical position.

Data read-out is achieved using a standard WIFi enabled device (such as a smartphone, laptop) or using a custom PDA. In any case, the JSON interface protocol can be hardware platform independent (eg iOS, Android, Win10) to suit the final application. A serial RS422 interface is also available.

Rugged environmental conditions were an important feature in the design of this unit internally with the high integration of electronics and sensors modelled using 3D CAD. This played a key role in keeping the unit shock & vibration resistant.

APPLICATION EXAMPLES

· MINING RIG ALIGNMENT               · O&G REFERENCE SYSTEM                · HDD RIG ALIGNMENT                · MINING AUTOMATION

Characteristics

CFA-130IC

Heading accuracy (°)*

0.12

Roll/Pitch accuracy (°) RMS**

0.05

Alignment Time (min)***

5 to 12 minutes, dependent on latitude

*SecLat 1σ
** RMS 1σ
*** Static

System Characteristics

Gyroscopes

Type

3-axes Fog

Bias stability

>1 deg/hr (measured over 1 month)

ARW

≥ 0.0037°/√hr

Max angular rate

495°/s

Accelerometers

Type

3-axes MEMS

Scale Factor stability

300 ppm (typ measured over 1 year)

Bias stability

3.75 mg (typ measured over 1 year)

Environmental

Operating Temperature

-40°C to + 71°C

Storage Temperature

-55°C to +85°C

Vibration

IEC 60068-2-6

Shock (survival)

IEC 60068-2-27

Humidity

< = 95% RH

Power requirements

Input voltage

18-35V

Power consumption

18W

Export restrictions

None

ROHS

Yes

Connectors

J1:

Power, Serial bus & Test

Interface

Type

RS422 serial WiFi IEEE 802.11 g 2.4GHz

Protocol

JSON

Phisical Properties

Dimensions

106x132x223mm

Weight

4.2kg

Rating

IP67

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