LCM370B/LCM375B-N 3D Digital Compass Sensor for Coal Mine Navigation, Drilling Measurement and Underground Positioning Systems

LCM370B/LCM375B-N is a low power high accuracy 3D digital compass of strip shape, its width is only 1.6cm, IP67 protection grade, suitable for many harsh environment such as drilling measurement. it adopts advanced hard iron and soft iron calibration algorithm, it can provide the high precision heading value output when both pitch and roll angle at any angle within 360°. it is small and low power consumption, suitable for current miniaturization sensitive measurement system. Sealed complete item and signal board are available.

LCM370B/LCM375B-N integrated patented three -axis flux-gate technology. It calculates heading value in real-time by CUP, and perform heading value compensation in wide tilt range by using three axis accelerometer. It is high performance and excellent stability militarily level compass sensor. Its volume is small, power consumption is low. It could widely used in many application such as antenna installation, vehicle and integrated system, and so on.

• Heading Accuracy: 0.5°
• Roll Measure Range:±180°
• Tilt Resolution: 0.1°
• Tilt Accuracy: <0.2°(Full Range)
• Working Temp.: -40℃~+85℃
• Dimension: L111.5*W19.5*H19.5mm
• With Hard And Soft Magnetic Calibration
• RS232/RS485/TTL Output

• Satellite antenna search satellite
• Marine navigation surveying and mapping
• GPS integrated navigation
• Antenna servo control
• Infrared imager
• Laser range finder
• Map for plotter
• ROV underwater robot navigation
• Oceanography measurement instruments
• Special occasion robot

LCM370B-LCM375B 3D electronic compass azimuth is using geomagnetic principle, so it is very important to select a minimum magnetic interference environment for installation positon. Please place and install the it away from the iron, magnets, engines and other magnetic objects as much possible as you can. Need control over 30CM distance(different magnetic interfere with the compass in different distance ) at least even there are these magnetic medium around . In order to ensure the measurement accuracy of the product, M3 anti-interference copper screws must be used during installation.

Although it can compensate the moderate deviation in the stable magnetic environment, but it can not compensate the changed magnetic interference. Please pay much attention to the wire with DC will generates a magnetic field , because if the DC change then the magnetic field will also change in size . The battery also is another interference source of changing . Each installation is different, and the user must evaluate the feasibility of installation under all possible operating environment.

The optimal heading accuracy of it can reach 0.3°~0.5°, this undergo a rigorous validation indisputable, the most scientific test method is equally crucial. The test method we recommend is: Please install the electronic compass to a vertical and erect aluminum pole (non-magnetic material), then proceed with heading accuracy measurement (of course the rotating rod perpendicular to the rotating platform, as much as possible to avoid large external magnetic field interference). Doing so can reduce the compass turning radius, to scientifically improve the measurement accuracy. This is just to provide the installation of the laboratory, must be flexible to deal with the specific situation.E.g: is mounted in the car, LCM505B should do its installation in the perpendicular to the movement direction.