Application

What Performance is the FOG sensor in FOG North Finder

FOG North Seeker Applied in Coal Mining

1.Application Products

ER-FNS-03 Low Cost 3 Axis FOG North Seeker

2.1 Triaxial Fiber Optic Gyro

2.1.1 Performance Indicators

Table 1 Performance requirements of fiber optic gyroscope

NoIndicatorValue
1Operating temperature (℃)-45~+75
2Start time τ (s)≤5
3Dynamic range (° / s)≥±400
4Zero-bias stability (1σ,/h) (100s Standard Deviation)≤0.3
5Zero bias repeatability (1σ,/h)≤0.3
6Random walk coefficient (°/ √h)≤0.03
7Non-linearity of scale factor (ppm)≤100
8Asymmetry of the scale factor (ppm)≤100
9Repeatability of scale factor (ppm)≤100
10Extreme temperature scale factor (ppm)≤200
11Bandwidth (Hz)≥200

2.1.2 Interface Protocol

Table 2 FOG interface communication protocol

Data frameOutput DataEditionFirst edition
Frame description
ContentTypesAsynchronous serial data frame
sourceFiber Optic Gyro
Standards compliantRS-422; baud rate 614400bits / s; 1bit start bit, 8bit data bit without parity, 1bit stop bit
Update rate400Hz
ElementSignal nameSignal description
1Head of

Gyro data

0xEB
20x90
3Gyro Data4-byte 32-bit signed integer, character 3 is the lowest 8 bits, and character 6 is the highest 8 bits. Negative data are in two's complement form. The scale factor is: 1
4Gyro Data4-byte 32-bit signed integer, character 3 is the lowest 8 bits, and character 6 is the highest 8 bits. Negative data are in two's complement form. The scale factor is: 1
5Gyro Data4-byte 32-bit signed integer, character 3 is the lowest 8 bits, and character 6 is the highest 8 bits. Negative data are in two's complement form. The scale factor is: 1
6Gyro Data4-byte 32-bit signed integer, character 3 is the lowest 8 bits, and character 6 is the highest 8 bits. Negative data are in two's complement form. The scale factor is: 1
7ReservationFill in 00;
8ReservationFill in 00;
9ReservationFill in 00;
10ReservationFill in 00;
11ReservationFill in 00;
12ReservationFill in 00;
13ReservationFill in 00;
14ReservationFill in 00;
15Temp/conditionTemperature calculation formula: output according to standard 18B20, the negative number of data is in two's complement form. The scale factor is: 1/16 (the output code value is multiplied by the scale factor to obtain the temperature in Celsius)
16Status: 0 ~ 3, update period: 1ms
1715,16 data descriptionState 0: gyro temperature; 1: reserved; 2: reserved; 3: working state
18Cycle countThe value of each packet of data is increased by 1, and after 255, the next packet of data is 0;;
19ChecksumAfter accumulating characters from 3 to 18, take the lower 8 bits as the checksum

2.1.3 Power Supply

Power supply type: + 5V -5V GND

Power quality: ± 5%, ripple 20mv

Power (3 way):

Transient: + 5V: 5.0W; -5V: 2.0W

Steady state: + 5V: 3.0W; -5V: 1.5W


More Technical Questions

1.What is the Device Interface Definition of MEMS North Seeker

2.How to Use Acquisition Software of MEMS North Seeker

3.What is the Device Interface Definition of FOG North Seeker

4.How to Use Acquisition Software of FOG North Seeker

5.What Performance is the Accelerometer Sensor in FOG North Finder

6.What is the System Structure of FOG North Finder


Products in Article


Low Cost 3 Axis FOG North Seeker
Low Cost 3 Axis FOG North Seeker

Cost-Efficient Triaxial MEMS North Seeker
Cost-Efficient Triaxial MEMS North Seeker

Smallest Size Triaxial MEMS North Seeker
Smallest Size Triaxial MEMS North Seeker

High Performance North Seeking MEMS Gyroscope
High Performance North Seeking MEMS Gyroscope

North-Seeking MEMS IMU
North-Seeking MEMS IMU

High Accuracy North-Seeking MEMS IMU (2)
High Accuracy North-Seeking MEMS IMU

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