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

GSGYR323M Triaxial Digital MEMS Gyro

GSGYR323M approaches FOG-level precision with MEMS technology: bias ≤0.2°/h, scale nonlinearity ≤0.02%, resolution ≤0.01°/s. The ±500°/s range and <50g ultralight weight make it suitable for high-dynamic platforms. RS422 output with triaxial synchronization and 5000g shock tolerance. Built-in self-test (BIT) enhances system reliability. This gyro is the angular rate sensing core for intelligent vehicles, robotics, missile guidance, and strapdown INS.

Feature：

● Zero bias calibration
● Temperature drift compensation
● Wide measurement range
● Wide bandwidth
● Non-linear correction
● Wide operating temperature range
● Small size, light weight
● High impact acceleration resistance

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Product Introduction

GSGYR323M series solid state angular rate sensor (gyro), used to measure angular rate. It uses micromechanoelectronic system (MEMS) technology chips, which are manufactured using bipolar metal oxide semiconductor (BIMOS) technology production process and spherical grid arrangement of current carrier welding technology. With high reliability and high package ruggedness, and with Self-Test (self-test) function, it can achieve in-machine detection (BIT).

Operating principle:

GSGYR323M series angular rate sensors work according to the principle of resonator gyro. Two polysilicon sensitive structures, each containing a high-frequency vibrating frame, which is driven electrostatically and resonates, form the necessary speed elements. The two outer ends of the frame form a capacitance-sensitive structure that is sensitive to the Coriolis motion generated at the angular rate and generates an electrical signal, which is transmitted to the amplifying stage and the modulating stage, thus output an electrical signal proportional to the angular rate.

Dimensions

Interface Specification

Num	Define	Explain
8	5V	VCC
15	GND	GND
10	RS422 Rx+	Receive +
2	RS422 Rx-	Receive -
9	RS422 Tx+	Send +
1	RS422 Tx-	Send -

Communication protocol

Through serial communication interface and processing circuit unit communication, using RS-422 standard, 8 data bit, 1 stop bit, no check bit.

The measurement data is encapsulated in 12 bytes, and the specific data format is shown in the following table.

Serial number	Content	Type	Range	Units	Remarks
0	Frame Header	U1			0x90
1-3	Gyro X	S3	-500~500	°/s	The highest bit of the first byte is the sign bit 16384 LSB/°/s
4-6	Gyro Y	S3	-500~500	°/s
7-9	Gyro Z	S3	-500~500	°/s
10	count	U1	0--255
11	check code	U1			Numbers 0 to 10 Add up

Note:

U1 is a byte unsigned type

S3 Three bytes have a signed type

Analysis example: X-axis gyro solution is as follows, others similar

TX = 65536*data[1] +256*data[2] + data[3]

if TX>2^23

TX= TX - 2^24;

End

T(i)= TX/16384;

Technical Specifications

Parameter	GSGYR323M
Power supply parameter
Input voltage	5V DC
Power 25°C	1.1W
Product performance
Range	±500°/s
Bias	±0.05°/s
Bias stability	≤0.2°/h
Scale factor nonlinearity	≤0.02%
Resolution	≤0.01°/s
Weight	<50g
MTBF	10000h
Environment
Operating temperature	-40°C～+80°C
Storage temperature	-55°C~+85°C
Random vibration	6.06g
Shock	5000g

GSGYR323M-EN-VI

PDF

Production Test Report

PDF

GSGYR323M-EN-VI

DOCX

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