Product Description:
Introduction
The KSIMU03D is a top-of-the-line inertial measurement device
designed for precise navigation, control, and dynamic measurement
of weapons. Its compact size, high overload resistance, and
exceptional performance make it a go-to choice in the military
industry.Product Description
The KSIMU03D series of products boasts full MEMS inertial devices.
The power supply, ADC, processor, and interface chip are procured
separately for optimized performance. The overall quality of the
product meets the common military standard, ensuring reliable and
consistent results.Key Features
The KSIMU03D is made up of a three-axis gyroscope, a three-axis
accelerometer, a temperature sensor, a signal processing board, a
structure and necessary software. The device is designed to measure
the three-axis angular rate, three-axis acceleration, pitch and
roll angle of the carrier.Output and Communication
The device is equipped with an RS-422 serial port that communicates
according to convention communication protocol. Additionally, the
device outputs error compensation data, which includes temperature
compensation, installation misalignment angle compensation,
nonlinear compensation, and so on. Gyroscope, accelerometer, and
pitch-roll angle data are all included in the output.Features:
● Wide operating temperature range
● Wide bandwidth
● Small size
● Fast start
● High precision
● High reliability and high robustness
● Accurate measurement in harsh environment
Technical Parameters:
| Parameter | KSIMU03D |
| Power supply parameter |
| Voltage | 5V |
| Power consumption | 1.5W |
| ripple | 100mV |
| Product performance |
| Weight | 55g |
| Pitch Angle accuracy(-90°~+90°) | <0.1° |
| Roll Angle accuracy(-180°~+180°) | <0.1° |
| course angle(-180°~+180°) | --° |
| Gyroscope | Measuring range (customizable) | ±500°/s |
| Zero bias stability(@Allan variance) | 0.5°/h |
| random walk | 0.15°/√h |
| Zero bias repeatability | 10°/h |
| Zero bias acceleration sensitivity | 1°/h/g |
| Scale factor nonlinearity (room temperature) | 200ppm |
| Scale factor repeatability (room temperature) | 200ppm |
| cross coupling | 0.1% |
| bandwidth | 250Hz |
| Accelerometer | Measuring range (can be customized) | ±30g |
| Zero Bias stability (Allan Variance @25 ℃ ) | 50ug |
| Zero bias error in the whole temperature range | 10mg |
| random walk | 0.2m/s/√h |
| Zero bias repeatability | 0.5 |
| Scaling factor repeatability | 300 |
| Scale factor non-linearity | 100 |
| bandwidth | 100 |
| Environment |
| Operating temperature | -45℃～+85℃ |
| Storage temperature | -55℃～+105℃ |
| Vibration | 10~2000Hz, 6.06g |
| impact | 5000g,0.1ms |
Dimensions:
KSIMU03D inertia unit is shown in Figure 4
Figure 4 Appearance of the IMU
The KSIMU03D is installed with three Φ4.4 through holes and three
M4 screws (spring washer and flat washer). When the connector is
installed, the plug should be locked with the socket and the cable
should be fixed. It is recommended that the flatness and
verticality of the installation surface relative to the base plane
be no more than 0.02mm, no more than 0.04mm, and no more than 0.8μm
of the surface roughness.
Spatial Coordinates:
Right hand rule principle 1
The MEMS IMU contains three axial spatial coordinate systems,
namely X, Y and Z. The X-axis points to the direction of the
electrical connection interface, the Y-axis points to the left side
of the IMU, and the Z-axis points to the top surface of the IMU, as
shown in Figure 1.
Figure 1 IMU Spatial coordinate
The installation of the IMU must match the axis of the coordinate
system, otherwise the measured angular velocity data is not
accurate. Following the "Right Hand Rule principle 1", you can
quickly assign and determine the axis of the coordinate system.
Extend your right hand and expand your thumb, index finger, and
middle finger respectively. The thumb is pointing in the X-axis
direction, the index finger is pointing in the Y-axis direction,
and the middle finger is pointing in the z-axis direction, as shown
in Figure 2.
Figure 2 Principle 1 of the right-hand rule
Right Hand Rule Principle 2
The three-degree-of-freedom gyroscope in the IMU measures angular
velocities in three directions. Following the "right hand rule
principle 2", the angular velocity direction of the axis rotation
can be quickly determined. Stretch out the right hand and spread
the thumb. The direction of the thumb is the axial direction, and
the direction of the other four fingers is the direction of the
axial rotation of the thumb, as shown in Figure 3.
Figure 3 Principle 2 of the right-hand rule
Definition of heading Angle, pitch Angle and rolling Angle
Pitch angle definition: Taking the X- axis as the rotation axis,
counterclockwise is positive, horizontal is zero, and the range is
[-90º, 90º].
Roll angle definition: Taking the Y axis as the rotation axis,
counterclockwise is positive, horizontal is zero, and the range is
[-180º, 180º].
Course angle definition: Taking the Z axis as the rotation axis,
counterclockwise is positive, north is zero, and the range is
[-180º, 180º].
Electrical Characteristics:
The electrical connector model of KSIMU03D is J30JE-15ZKN-J, and
the corresponding connector model is J30J-15TJ. Contact specific
distribution is shown in the table below.
| Contact number | Pin definition | type | illustrate |
| 8 | VSUP | SUPPLY | Product power supply positivel, DC regulated power supply |
| 15 | GND | SUPPLY | Product ground, power ground and serial port ground |
| 10 | RxD+ | INPUT | Product RS422 receiving interface positive end |
| 2 | RxD- | INPUT | Product RS422 receiving interface negative terminal |
| 9 | TxD+ | OUTPUT | Product RS422 output interface positive end |
| 1 | TxD- | OUTPUT | Product RS422 output interface negative terminal |
Communication protocol
The communication interface is RS422, with 8 data bits, 1 start
bit, 1 stop bit, and no verification; the high byte is first and
the low byte is last. The default baud rate at power-on is 460800,
and the data update frequency is 500Hz.
| Number of bytes | name | Zoom | units | Remark |
| 0-1 | Frame header | | | 0xAA55 |
| 2-5 | Gyro X | 1000 | °/s | X gyro angular rate |
| 6-9 | Gyro Y | 1000 | °/s | Y gyro angular rate |
| 10-13 | Gyro Z | 1000 | °/s | Z gyro angular rate |
| 14-17 | Accelerometer X _ | 100000 | g | X acceleration |
| 18-21 | Accelerometer Y | 100000 | g | Y acceleration |
| 22-25 | Accelerometer Z _ | 100000 | g | Z acceleration |
| 26-29 | Pitch angle | 100 | ° | Raise your head to be positive |
| 30-33 | Roll angle | 100 | ° | Right leaning is positive |
| 34-37 | Course angle | 100 | ° | Counterclockwise is positive |
| 38-41 | Temperature | 100 | ℃ | |
| 42 | Count | | | 0-255 Count |
| 43 | Effectiveness | | | The cumulative sum of all bytes 0-42 takes the lower 8 bits |
Setup command
1 Setup preparation
Stop output
*0RM=D (Enter)
Start output
*0RM=U (Enter)
2 Set baud rate
*BAUD=1 (Enter) Set the baud rate to 115200
*BAUD=2 (Enter) Set the baud rate to 230400
*BAUD=3 (Enter) Set the baud rate to 460800
*BAUD=4 (Enter) Set the baud rate to 921600
3 Set output frequency
*FREQ=1 (Enter) Set the output frequency to 100Hz
*FREQ=2 (Enter) Set the output frequency to 125Hz
*FREQ=3 (Enter) Set the output frequency to 250Hz
*FREQ=4 (Enter) Set the output frequency to 500Hz
Applications:
Automotive Electronics
Automotive electronics refers to the electronic systems used in
vehicles to enhance their functionality and performance. These
systems include electronic control units (ECUs), sensors,
actuators, and communication devices that work together to regulate
various aspects of the vehicle's operation.
Aircraft Guidance and Control
Aircraft guidance and control systems are critical to the safe
operation of aircraft. These systems use advanced technologies such
as GPS, autopilots, and flight management systems to help pilots
navigate, maintain altitude and airspeed, and land safely.
Attitude Reference System
The attitude reference system is a key component of aircraft
guidance and control. It provides accurate information about the
aircraft's orientation in space, which is essential for maintaining
stable flight and navigating accurately.
Platform Stabilization
Platform stabilization is used in a variety of applications,
including cameras, telescopes, and radar systems. It involves the
use of sensors, motors, and control systems to keep the platform
steady and pointed in the desired direction, even in the presence
of external disturbances.
Robot, Antenna Stabilization
Robot and antenna stabilization systems are used to keep these
devices steady and pointed in the correct direction. They use
advanced sensors and control algorithms to detect and compensate
for external forces and disturbances, ensuring accurate and
reliable performance.
Support and Services:
Our Electronic Gyroscope Sensor is designed to provide precise
motion sensing in a variety of applications. Our product technical
support and services are dedicated to ensuring that you can
integrate and use our gyroscope sensor effectively in your
projects.
Technical Support:
- Comprehensive online documentation: Access detailed product
specifications, integration guides, and troubleshooting articles to
assist you with any technical queries regarding our Electronic
Gyroscope Sensor.
Services:
- Email support: Reach out to our dedicated support team for
personalized assistance with any technical issues you may
encounter.
We are committed to providing you with the support you need to
utilize our Electronic Gyroscope Sensor to its fullest potential.
Packing and Shipping:
Product Packaging:
The Electronic Gyroscope Sensor comes securely packaged in an
anti-static bag to prevent any electrostatic discharge during
handling. The bag is then placed in a custom-fit foam insert that
snugly holds the sensor in place, ensuring maximum protection
against physical shocks and vibrations. This foam is encased in a
sturdy cardboard box which is sealed and labeled with the product
information and handling instructions. The packaging has been
designed to be compact while offering the best possible protection
for the sensitive electronics inside.
Shipping:
Once the Electronic Gyroscope Sensor is packaged, it is ready for
shipping. The boxed product is placed in a secondary, larger
cardboard box with additional cushioning material to fill any void
space, minimizing movement during transit. Fragile stickers are
applied to the outer box to alert couriers that the contents
require careful handling. The package is then sealed with
heavy-duty packing tape and dispatched using a reliable shipping
service that provides a tracking number. Customers will receive
their tracking information via email to monitor their package's
journey until delivery.
