INELSO BS-FU50A-5D1EC Fiber Optic Gyroscope Instruction Manual
- June 12, 2024
- INELSO
Table of Contents
INELSO BS-FU50A-5D1EC Fiber Optic Gyroscope
Product Information
The BS-FU50A-5D1EC Fiber Optic Gyroscope is an inertial angular rate sensor based on the optical Sagnac effect. It consists of an optical angular velocity sensing unit and a signal detection unit, providing single-axis angular increment information and internal temperature information. This product is mainly suitable for applications such as medium-precision inertial navigation systems, positioning and orientation systems, and servo stabilization systems.
The main components of the product include:
- The optical path unit, which comprises an SLD light source, an optical fiber re, an integrated optical phase modulator, an optical fiber coupler, and an optical detector.
- The circuit unit, which comprises a light source driving circuit and a detection and control signal circuit board.
- Gyroscope structural parts.
Overview
This document specifies the requirements and methods for the use and
maintenance of BS-FU50A-5D1EC fiber optic gyroscope (product for short).
Product introduction
Working principle, function and scope of application of the product
-
How it works
This product is an inertial angular rate sensor based on the optical Sagnac effect, which is used to measure the angular rate of the carrier along the sensitive axis of the product. The angular rate sensing unit of the product is an optical fiber ring, a digital closed-loop detection circuit is adopted to extract the optical path difference of clockwise and counterclockwise propagation light caused by the external physical angular rate, which is sensed by the optical fiber ring, and meanwhile, a voltage signal converted from an optical path difference signal is subjected to closed-loop feedback and control, so that the modulation and demodulation of the signal are realized, and the purpose of angular rate signal detection is achieved. -
Function
This product is composed of an optical angular velocity sensing unit and a signal detection unit, providing single-axis angular increment information and internal temperature information. -
Scope of application
The products are mainly suitable for applications such as medium-precision inertial navigation systems, positioning and orientation systems, and servo stabilization systems.
Composition
The main components of the product are as follows:
- a) The optical path unit comprise an SLD light source, an optical fiber re, an integrated optical phase modulator, an optical fiber coupler and an optical detector;
- b) The circuit unit comprises a light source driving circuit and a detection and control signal circuit board;
- c) Gyroscope structural parts.
Appearance and installation dimension
Overall dimension (mm): 50 ± 0.1 × 50 ± 0.1 × 32 ± 0.1 (L × W × H);
Installation dimension (mm): 43 ± 0.1 × 43 ± 0.1 (L × W), Φ3.2mm × 4, such
asFigure As shown.
Weight
The total weight of the product is less than 125 G.
Main performance parameters
See the main performance parameters of the product for details.Table.
Table 1 Main performance parameters
| Serial number | Test item | Unit | Technical requirements |
|---|---|---|---|
| 1 | Overall dimensions | mm | 50×50×32 |
| 2 | Start time | 5 | 5s |
| 3 | Zero bias stability (10s smooth) | (°)/h | ≤0.1 |
| --- | --- | --- | --- |
| 4 | Zero-bias repeatability | (°)/h | ≤0.1 |
| 5 | Random walk coefficient | (º)/h1/2 | ≤0.01 |
| 6 | Scale factor nonlinearity | ppm | ≤50 |
| 7 | Scale factor repeatability | ppm | ≤50 |
| 8 | Operating temperature | ℃ | -40~+70 |
| 9 | Storage temperature | ℃ | -50~+70 |
| 10 | Dynamic range | (°)/s | ±500 |
| 11 | Supply voltage | V | +5V |
| 12 | Steady state power consumption (full temperature) | W | <4 |
| 13 | Bandwidth | Hz | ≥200 |
Mechanical and electrical interface relation
- Power requirements
The product is powered by + 5V DC. Its power supply requirements are as follows:
Table 2 BS-FU50A-5D1EC Fiber Optic Gyroscope Power Supply RequirementsSerial number| Name| Request
---|---|---
1| Power supply accuracy| ±5%
2| Power Ripple (Vpp)| 20mV
3| Supply current| >1.5A - Electrical connection interface
The connector connecting the product to the outside is J30JZLN9ZKCA000. See Table 3 for the definition.
Table 3 Definition of J30JZLN9ZKCA000 Gyroscope Connector and Test Line Point.Core point number| Definition| Comment
---|---|---
Core point number| Definition| Comment
---|---|---
1| +5V| Power supply input
2| GND| Power ground
3| —| Reserved
4| RXD+| Gyro differential sorting and correcting
5| TXD+| Gyro RS422 output positive
6| +5V| Power supply input
7| GND| Power ground
8| RXD-| Gyro differential gating negative
9| TXD-| Gyro RS422 output negative
Note: When connecting or contacting the product, anti-static measures shall be taken in accordance with GJB 1649-1993.
- Communication protocol
- Communication interface: RXD and TXD are RS422/485 differential communication interfaces. RXD is used to receive differential pulse (or square wave) synchronous gating signals, and TXD is used to output serial data signals.
- Communication protocol: The frequency of the gating signal is not more than 1 kHz. After the gyro receives the gating signal, it latches the internal angle increment data and starts to output the gyro data packet through TXD within 5 μs. The transmission baud rate is 460.8k bps. The data packet contains 11 bytes, each byte has 1start bit, 8 data bits, 1stop bit, and no parity bit.
- The angle increment information is the angle increment value of the gyroscope in the time between two gating signals, and the average value of the angular velocity of the gyroscope in a period of time is obtained by dividing the angle increment accumulated value in the period of time by the interval time.
The packet format is as follows:
Table 4 Format of Gyro Data Packet:
| 1 | 99 (hexadecimal) |
|---|---|
| 2 | 66 (hexadecimal) |
| 3 | Status word, normal value is FF (hexadecimal) |
| 4 | Gyro delta 1, LSB |
| 5 | Gyro delta 2 |
| 6 | Gyro delta 3 |
| 7 | Gyro delta 4, MSB |
| 8 | Temperature data, LSB |
| 9 | Temperature data, MSB |
| 10 | Frame number, plus one for each transmission, cycle count |
| 11 | Checksum, cumulative sum of bytes 3 to 10 |
Product installation and removal
Request
The user shall be responsible for the installation and disassembly of the
product. During this process, the product shall not be impacted, and the outer
surface of the product shall not be machined.
Methods and procedures
The method and steps are as follows:
- A) The flatness of the surface used to fix the product shall be better than 0.02 mm;
- B) It is recommended that the bottom of the product shall be evenly coated with a layer of 0.2 ~ 0.5mm thick heat-conducting silica gel during product installation;
- C) It is recommended to place an aluminum plate (larger than the size of the product) under the mounting surface of the product during product testing;
- D) The magnetic field intensity at the product installation position shall not be greater than 1G/s.
Inspection after installation
Check whether each mounting screw meets the size of the mounting hole and
whether it is firm.
Operating procedures
Inspection before use
Check the appearance of the product for physical damage such as collision.
Instructions for the use of the product
Instructions for use are as follows:
- a) The product is installed on the carrier, and the cable is correctly connected according to the requirements of Table 3;
- b) Data connection shall be conducted according to 2.6.3 communication protocol.
Precautions
The relevant notes are as follows:
- a) In order to avoid damaging the performance of the gyroscope and reducing the service life of the gyroscope, frequent power-on and power-off operations should not be carried out in the process of using the gyroscope.
- b) Before the gyroscope is powered on, the power supply system shall be checked to ensure that there is no short circuit between the electrical points of the power supply and between the gyroscope shell and the electrical points;
- c) In case of abnormal operation of this product, the manufacturer shall be consulted. It is forbidden to disassemble and repair the product without authorization.
- d) The fiber optic gyroscope is a precision instrument, so it should be handled with care during use and transportation.
- e) The correct product input and output signal lines and power supply lines must be ensured;
- f) It is required to take anti-static measures in the process of contacting the product;
- g) The magnetic field intensity around the product location shall be less than 1Gs.
Maintenance and care
Relevant maintenance and service instructions:
- a) Before the product is loaded into the carrier, it is required to electrify the product at least once every 6 months, and the one-time electrification time is 3600 s. The electrification time is not required to detect the electrical parameters of the product;
- b) After the product is loaded into the carrier, it is required to be powered on at least once a year for 3600s. It is not required to test the electrical parameters of the product when it is powered on.
Common Faults and Troubleshooting
This product is in a sealed state and cannot be repaired on site after any
failure of the user, and needs to be returned to the production unit for
repair. The following can only list some possible faults that are not related
to the product itself, as shown in Table 5. If the user has other technical
problems, please contact the product manufacturer.
Table 5 Common Faults and Troubleshooting
| Serial number | Fault symptom | Cause analysis | Exclusion method |
|---|---|---|---|
| 1 | When the product is energized, the indication of + 5V ammeter is basically | ||
| zero. | The product is not being powered or is providing too little current. |
Check the power supply and power supply circuit, and restore the power supply
of the product.
2| When the product is powered on, the + 5V ammeter indicates normally, but
the computer acquisition program does not work.| The acquisition system of the
test equipment is abnormal.| Check the connection cable and the power supply
of the equipment.
Software program conflict| Restart the computer
Transportation and storage requirements
Shipping considerations
Transportation precautions are as follows:
- a) Place the product in the direction shown in the packing box;
- b) Transportation by road, rail, air and water is permitted;
- c) During transportation, ensure that the packing box is fastened to the carrier and will not move.
Storage conditions and storage period
Precautions for storage conditions and duration are as follows:
- a) The products placed in the packing box shall be stored in an air-conditioned warehouse under the standard atmospheric pressure, with the ambient temperature of 25 ℃ ± 10 ℃, the relative humidity of 30% ~ 70%, and the surrounding magnetic field intensity of less than 1Gs;
- b) The storage life of the product is 15 years.
Unpacking notes
- a) Check the appearance of the outer package for physical damage such as collision;
- b) Check whether the product and supporting accessories are complete. See 6 for details.
- c) Electrostatic protection shall be carried out when the product is taken out.
Table 6 List of Supporting Products to Be DeliveredSerial number| Name| Quantity
---|---|---
1| BS-FU50A-5D1EC Fiber Optic Gyros| cope 1
2| Gyroscope packing box| 1
3| Gyroscope test report (including
certificate of conformity)
| 1
4| J30JZ/XN9TJCAL01 Connector| 1