HCM380B/HCM385B-MP HIGH ACCURACY 3D DIGITAL COMPASS HIGH ACCURACY 3D DIGITAL COMPASS Technical Manual

HCM380B/HCM385B-MP HIGH ACCURACY 3D DIGITAL COMPASS ○ CE certification (registration number: AT18250EC000559) ○ RoHS certification: 18300RC20410801 ○ China National Intellectual Property Appearance Patent (Patent No.ZL 202030439665.9) ○ Revision Time: 2023-9-15 ○ Product Functions, Parameters, Appearance, Etc. Will Be Adjusted With Technology Upgrades, Please Contact The Company's Pre-Sales Business To Confirm When Buying Disclaimer This product is developed exclusively for commercial applications and is prohibited from being used for illegal purposes, such as military activities, research related...

HCM380B/HCM385B-MP HIGH ACCURACY 3D DIGITAL COMPASS ▶ INTRODUCTION HCM380B/HCM385B-MP is a cost-effective 3D electronic compass. It adopts 24-point calibration method, which has stronger anti-interference and easy operation, and uses high-precision accelerometer for tilt compensation, so that it can provide high-precision heading information at any tool surface at roll within ±180 °For fixed interference, it can still provide high-precision measurement data, RS232, RS485, TTL multiple communication interface methods are optional. The product integrates a three-axis magnetometer and a three-axis...

HCM380B/HCM385B-MP HIGH ACCURACY 3D DIGITAL COMPASS PARAMETERS Best heading Accuracy Pitch accuracy Pitch range Roll accuracy physical properties Interface features Environment Protection Electromagnetic Compatibility MTBF Insulation Resistance Anit-Impact Anti--Shock Roll range Hard Magnetic Calibration Soft Magnetic Calibration Magnetic Filed Interference Calibration Method Dimension Direct lead cable Start Delay Communication Rate Output Format Binary High Performance Protocol Power Voltage Ideal Current Sleep Mode Working Temp. Storage Temp. Anti-Shock Performance

HCM380B/HCM385B-MP HIGH ACCURACY 3D DIGITAL COMPASS Output interface Installation method Sealed mode 232 : RS232 interface 485 : RS485 interface TTL : UART TTL level 0: PCB single board 5: Enclose sealed E.g : HCM385B-232-MP: enclosure packaging / horizontal installation / RS232 digital interface /24-point calibration. ▶ SINGLE BOARD SIZE PCBA board dimension: L33×W27×H9.5mm Installation dimension: L28.5×W22.6×H2mm Installation screws: 4×M3 screw(Copper screw) Shell Size : L57×W49×H25.5mm Installation dimension: L45×W39×5mm Installation screws: 4×M4 screw(Copper screw)

HCM380B/HCM385B-MP HIGH ACCURACY 3D DIGITAL COMPASS HCM380B single board cable wire connection : Cable Color Definition Power negative Power positive HCM380B single board TTL/RS232wiring diagram ▼ HCM380B single board TTL / RS232 wiring diagram ▼ HCM385B cable wire connection : Cable Color Definition BLACK GND power negative ▶ MEASUREMENT DIRECTION AND INSTALLATION REQUIREMENTS

HCM380B/HCM385B-MP HIGH ACCURACY 3D DIGITAL COMPASS Because the azimuth angle of HCM380B / HCM385B 3D compass is based on the principle of geomagnetism, it is very important to choose an environmental installation location with minimum magnetic interference. Please install This product as far away from iron, magnet, engine and other magnetic objects as possible. Even if there is such magnetic medium around, it needs to be controlled at least over a distance of 30cm (different magnetic fields have different distances to the compass interference). In order to ensure the best measurement environment,...

HCM380B/HCM385B-MP HIGH ACCURACY 3D DIGITAL COMPASS 1) The accuracy of testing compass cannot reach the requirements. 2) compass installation environment has magnetic interference, the interference is fixed, and the interference magnetic field and compass installation will not happen again in distance changes (example: compass to be installed above an iron material, because the iron will have magnetic interference, at this time then need to rotate and calibrate the iron and compass, and the iron and compass will not be separated when using, once they are separated then need to re-calibrate. If...

HCM380B/HCM385B-MP HIGH ACCURACY 3D DIGITAL COMPASS The starting point of the calibration can be in any point in 360°, as long as it keeps about 90° for every change of angle (accuracy is not required). Example picture Pic.A: Starting point H=0°, R=0°, P=+15° (first calibrate the pitch value P) Please keep this position for 2 to 3 seconds, and the system will take the 1st point. After taking the 1st point, rotate it 90° horizontally ,Please keep this position for 2 to 3 seconds, and the system will take the 2nd point. After taking the 90° horizontally ,Please keep this position for 2 to 3 seconds,...

HCM380B/HCM385B-MP HIGH ACCURACY 3D DIGITAL COMPASS After taking the 12th point, both H and R remain unchanged, and then increase the -P angle . Refer to Pic.D: Starting point H=0°, R=0°, P=-70° , Please keep this position for 2 to 3 seconds, and the system will take the 13th point. After taking the 13th point, rotate it 90° horizontally ,Please keep this position for 2 to 3 seconds, and the system will take the 14th point. After taking the 14th point, rotate it 90° horizontally ,Please keep this position for 2 to 3 seconds, and the system will take the 15th point. After taking the 15th point...

HCM380B/HCM385B-MP HIGH ACCURACY 3D DIGITAL COMPASS ▶ COMMUNICATION PROTOCOL 1. DATA FRAME FORMAT: (8 Bits Date, 1 Bit Stop, No Check, Default Baud Rate 9600) Identifier Date Length 68H Identifier: Fixed68H Data length: From data length to check sum(including check sum）length Address code: Accumulating module address，Default :00 Date domain will be changed according to the content and length of command word Check sum: Data length、Address code、Command word and data domain sum,No carry. 2. COMMAND WORD ANALYSIS code 0X04 Instruction Data field(0byte) No data field command Data field(9byte) AA AB...

Data field (2byte): SA AB S is the sign, 0 plus, 1 minus, AA: two integers, B: one decimal Example: 02 08 is +20.8° The number in the data field represents the result of the sensor response data field(0byte) no data command data field(1byte) The number in the data field represents the result of the sensor response 00 start succeeded FF start failed Note: compass will return data every point is take until calibration stop, format as below: 0X88 Data field(1byte) The number in the data field that represents the calibration point picked up by the sensor (hexadecimal) data field(0byte) no data command...