F2X64 Dual-Axis Medium-Low Precision FOG

F2X64 Dual-Axis FOG Performance Parameters

Fiber optic gyro, as a new type of all-solid-state gyro, has the advantages of fast startup, wide measurement range and high reliability. F2X64 Dual Axis Low Precision Fiber Optic Gyro can be applied to It can be applied to vehicle-mounted stabilized platforms, guide heads, and sling silos, etc.

1.1 Application

This manual is only applicable to F2X64 series products and contains performance specifications, technical conditions, external dimensions and installation and use. Among them, the technical conditions include the product's environmental range, electrical performance, and physical characteristics.

1.2 Main Parameters

1.2.1 Main Performance Fiber Optic Gyroscope:

Table 1 Main Index

1.2.2 Mechanical testing

1.2.2.1 Sinusoidal Scanning Vibration

The gyro is fixed on the vibration table through the fixture according to the direction of vibration, and the gyroscope carries out sinusoidal scanning in 3 directions, corresponding to the X-axis, Y-axis, and Z-axis directions, respectively. Vibration steps; vibration table plus excitation, to the gyroscope power, after a certain period of warm-up (gyro start-up time), test the output value of the gyroscope, about 5min; sinusoidal vibration. Vibration conditions: 20Hz-2000Hz, scanning time 5min, amplitude 4.2g. vibration process, record the gyroscope output.

Random Vibration

Vibration Frequency: 20Hz~2000Hz

Vibration Time: 5min for each axis

Vibration Direction: X, Y, Z axis

Vibration Spectrum: see Figure 1

Index requirements:

Fiber optic gyro shall be no resonance with sinusoidal scanning in the range of 20 HZ to 2000 Hz;

Random vibration: the absolute value of the bias in the vibration and the average bias before and after the vibration shall be less than 1º/h.

1.2.2.2 Mechanical impacts are as required by Table 2.

Table 2 Impact Conditions

Impact process, the product should be able to work normally after mechanical impacts in the state of electricity, the bias should be less than 1º/h before and after the impact.

2 Communication Protocol

2.1 RS-422 Method

Baud rate: 460.8K;

Communication frame format

Per frame contains 10 bytes, the first byte is 0x80. Byte 1, 2, 3 are the high, medium and low 8-bit data of the gyro in horizontal direction. Byte 5, 6, 7 are the high, medium and low 8-bit data of the gyro in vertical direction. Byte 8, 9 are for the temperature, Byte 10 is the sum of byte 2-9, takes the lower 8 bits.

The format is shown in Table 3, 11 bits per byte, in the following order: Start from 1 bit

Data bit is 8 bits (send low first, then high), even parity is 1 bit, stop bit is 1 bit

Communication Rule

The gyro starts to send data after it detects falling of the external trigger signal, 2000Hz supported.

Table 3 Format of Each Byte of The Output Data Frame

3 Connection Definition

The gyroscope electrical interface uses a J30-15ZK connector, defined in Table 4.

4 Dimension

Horizontal dual-axis fiber optic gyroscope dimension: 64mm × 60mm × 42mm, mounting dimension: four holes 53mm × 57 mm, mounting screws: 4 M3 screws, the shape and mounting dimensions shown in Figure 2.