MF3 Fiber Optic Gyroscope North Finder: True North Determination System
Product Description:
The fiber optic gyroscope north finder is mainly used for rapidly and autonomously determining the true north direction, obtaining the rotation angular velocity of the earth by tracking the fiber optic gyroscope, resolving the rotation angular velocity signal of the earth, calculating the included angle between the main axis of the gyroscope and the true north direction of the earth, and providing azimuth information for a carrier.
Product Composition:
The gyroscope north finder is a mechatronic product, which is composed of an optical fiber gyroscope, an accelerometer, a mechanical rotation control device and an embedded computer.
Technical Parameters:
| | MF307 | MF308 | MF309 |
| North seeking time | ≤3min | ≤3min | ≤3min |
| Range of tilt angles over which north can be found | ±15° | ±15° | ±15° |
| North seeking accuracy(1σ) | 0.5° | 0.3° | 0.1° |
| Roll and pitch measurement accuracy(±15°) | 0.2° | 0.2° | 0.2° |
| Roll pitch resolution | 0.2° |
| Maintain heading | 1.2°/h (angular velocity<325°/s) |
| Power supply | 9.5~36VDC (Attention: diameter of power supply line > 0.3m2, power line and ground wire) |
| Operating current | Typical value: 0.5 A, maximum impact current: 1 A |
| Interface | TTL/RS232/RS422/RS485 customizable |
| Operating temperature | -20℃~+50℃ |
| Storage temperature | -40℃~+60℃ |
| Hot and humid environmental conditions | Relative humidity less than 95% |
| How it works | Automatic self-check is started after power on, automatic north seeking is performed after the self-check is successful, and a north seeking result is sent to the upper computer after the north seeking is completed. |
| Insulation resistance | The insulation resistance between the independent circuits of the gyro north finder and between the circuit and the shell shall not be less than 10 MΩ under standard atmospheric conditions. |
| MTBF | ≥ 10000 hours |
| MTTR | ≤30min |
| Material | Stainless steel + aluminum alloy |
| Weight | ≤ 1.1 kg (excluding cable) |
EXTERNAL PLUG:
RS232 / TTL wiring definition (7-core wiring definition)
| Line color function | PIN1 | PIN2 | PIN3 | PIN4 | PIN5 | PIN6 | PIN7 |
| DC9.5~36V | GND | RXD | TXD | Signal ground | NC | NC |
RS485 wiring definition (7-core wiring definition)
| Line color function | PIN1 | PIN2 | PIN3 | PIN4 | PIN5 | PIN6 | PIN7 |
| DC9.5~36V | GND | D+ | D- | Signal ground | NC | NC |
RS422 wiring definition (9-core wiring definition)
| Line color function | PIN1 | PIN2 | PIN3 | PIN4 | PIN5 | PIN6 | PIN7 | PIN8 | PIN9 |
| DC9.5~36V | GND | RXD+ | RXD- | TXD+ | TXD- | Signal ground | NC | NC |
