Gyrosens is a professional manufacturer and OEM/ODM provider of inertial sensors and navigation solutions since 2008.

GSGYR311F Lightweight Triaxial FOG

GSGYR311F packs triaxial FOG performance into a 52×51×52mm cube weighing just 300g—one of the lightest in its class. Bias <1°/h with bandwidth ≥2000Hz and ±1000°/s dynamic range. 3-second startup and RS422/485 selectable output. Operating from -45°C to +70°C. This lightweight solution delivers triaxial fiber optic gyro performance for gimbal stabilization, flight control, and INS applications without the weight penalty.

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Product Introduction

This product is an inertial angular rate sensor based on optical Sagnac effect, which is used to measure the rotation angular speed of the carrier along the direction of the sensitive axis. The digital closed-loop detection circuit is used to extract the optical path difference of the optical fiber loop sensitive by the external physical angular velocity. At the same time, the optical path difference signal is converted into the voltage signal for signal modulation and demodulation, and the closed-loop feedback and control are realized to achieve the purpose of real-time angular velocity signal detection.

This product is composed of optical angular velocity sensitive unit and signal detection, providing three-axis Angle increment information and internal temperature information.

Constituent part:

● Optical path unit (including SLD light source, fiber ring, integrated optical phase modulator, fiber coupler, photodetector).

● Circuit unit (light source driving circuit, signal detection and control circuit).

● Mechanical structure.

Function

● X/Y/Z three-axis gyroscope

● Short startup time

● Wide operating temperature range

● Support RS422 or RS485 interface

● Low power consumption

● Small size and light weight

● High reliability

Composition

● Gimbal Camera

● Flight control platform

● Inertial navigation system

● Inertial monitoring system

● Optical, photography and other platforms stable

● Inertial measurement unit

Interface Specification

Num	Define	Explain	Num	Define	Explain
1	+5V	Power input	6	+5V	Power input
2	GND	Power ground	7	GND	Power ground
3	Reserved Bits		8	RXD-	Receive Data-
4	RXD+	Receive Data+	9	TXD-	Transmit Data-
5	TXD+	Transmit Data+

5 (18)

Technical Specifications

Parameter	GSGYR311F
Number of Axles	3
Power Voltage	+5V DC
Power (25°C)	<4W
Power (-45°C～+70°C)	<8W
SupplycCurrent	>2A
Output	RS422
Size	52×51×52mm
Run-up Time	3s
Bias	<1°/h
Bias Stability 25°C	<1°/h (10s)
Bias Ttemperature Sensitivity 1°C/min	<1°/h
Bias Repeatability	<1°/h
Bias Magnetic Sensitivity	<0.2°/h/Gs
Random Walk	<0.08°/√h
Scale Factor Nonlinearity	<20ppm
Scale Factor Asymmetry	<10ppm
Scale Factor Repeatability	<20ppm
Threshold	<0.5°/h
Resolution	<0.5°/h
Bandwidth	≥2000Hz
Weight	<300g
Dynamic Range	±1000°/s
Start-up Current	<2A
Operating Temperature	-45°C～+70°C
Storage Temperature	-55°C～+80°C
Supply Voltage Accuracy	<±5%
Power Ripple	<50mV
Parameter	GSGYR311F