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HIGH ACCURACY 3D DIGITAL COMPASS RION HCM370B/HCM375B-N Technical Manual
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PRODUCTION IMPLEMENTATION STANDARD REFERENCE ○ Enterprise Quality System Standard: ISO9001: 2008 Standard (Certification No.: 128101) ○ The Intellectual Property Management System Complies With The Standard: GB/T29490-2013 (Certificate No.: 18117IP1529R0S) ○ High-Tech Enterprise (Certificate No.: GR201844204379) ○ China National Intellectual Property Appearance Patent (Patent No.: ZL201730609573.9) ○ Angle Sensor Production Standard: SJ20873-2003 General Specification For Sensor And Spirit Level ○ Gyro Acceleration Test Standard: QJ 2318-92 Gyro Accelerometer Test Method ○ Software...
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• Roll&Pitch Measuring Range:±180° •Tilt Accuracy: <0.2°(Full Range) •Dimension: L110*W19.5*H19.5mm • Rs232/Rs485/Ttl Output HCM370B-HCM375B is a 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....
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► PRODUCT ORDERING INFORMATION HCM37 ► 232 : RS232 interface ►485 : RS485 interface ►TTL: UARTTTL level 68: Standard 68 protocol 500: HCM500BProtocol analysis same NMEA: NMEAProtocol ■* 5: Enclose sealed E.g : HCM375B-232-68-N: enclosure packaging / horizontal installation / RS232 digital interface / factory default standard 68 protocol. ► ELECTRICAL CONNECTION HCM370B Single Board 232/TTL Output Wiring Definition Cable Color Definition ► MEASURING DIRECTIONS&FIX HCM370B-HCM375B 3D electronic compass azimuth is using geomagnetic principle, so it is very important to select a minimum...
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Horizontal Installation Diagram Vertical Installation Diagram
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▶ SINGLE BOARD SIZE CHART ▶ SHELL SIZE CHART ▶ CALIBRATION METHOD Calibration prerequisite: 1) The accuracy of testing compass can not reach the requirements; 2) compass installation environment have 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...
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Horizontally Install Calibration Mode: 1) Connect the DCM compass to the RS232 communication port and turn on the power. 2) Plane rotation - 360° or more: Figure A Horizontal start calibration command 68 04 00 41 45 Data field (0byte) Horizontal rotate for more than 1 revolution at a constant speed, the guaranteed time is above 20s. The value saved above 20s is valid, and the value saved below 20s is invalid. Save calibration commands horizontally 68 04 00 51 55 Data field (0byte) No data field command 2）Rotate 360° vertically upwards Figure B Start calibration command vertically upwards 68...
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Vertical Installation Calibration Mode: 1) Connect the DCM compass to the RS232 communication port and turn on the power. 2) Plane rotation - 360° or more: Figure D Horizontal start calibration command 68 04 00 41 45 Data field ( 0byte ) Horizontally rotate more than 1 revolution at a constant speed , the guaranteed time is above 20s. The value saved above 20s is valid, and the value saved below 20s is invalid. Save calibration commands horizontally 68 04 00 51 55 Data field ( 0byte ) No data field command 2) Rotate 360° vertically upwards Figure E Start calibration command vertically...
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► RION PRODUCT PROTOCOL 1. DATA FRAME FORMAT: (8 Bits Date, 1 Bit Stop, No Check, Default Baud Rate 9600) 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 Checksum: Data length. Address code. Command word and data domain sum,No carry. 2. COMMAND WORD ANALYSIS code Meaning/example explain 0X04 Read Pitch Roll, Heading Data field ( 0byte ) angle command at the same No data field command time 68 04 00 04 08 0X84...
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Data field ( 1 byte ) Invoke factory default value(current calibration data will be covered) Data field ( 1 byte ) No data field command Data field ( 1 byte ) Baud rate: default :9600 00 means 2400 01 means 4800 04 means38400 05 means115200 Data field ( 1 byte ) The data in the data domain means the response of the sensor 00 Success FF Failure Data field ( 1 byte ) XX module address, address from 00 to EF range Note: Our products have a unified address: FF, If forgot the set address when operating ,can use the FF address to operate the product, still normal response. Data field ( 1 byte ) ,...
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0XD0 Sensor respond command Data field (1byte), E.g:68 05 00 DO 00 D5 The data in the data domain means the response of the sensor 00 Success FF Failure 0X2A Set Installation Mode Command Data field (1byte) command 00 Success FF Failure commands Parsing three bytes means one axis Respond 68 0D 00 E0 00 00 01 AA AB BB CC CD DD EE EF FF 10 00 00 00 01 02 01 AAAB BB means X-axis acceleration CC CD DD means Y-axis acceleration EE EF FF means Z-axis acceleration On the left example, X-axis acceleration=0.01g,Y-axis acceleration=-0g,Z-axis acceleration=1.02g The upper four bits of the first byte...
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The upper four bits of the second byte are thousands bit The lower four bits of the second byte are hundred bit The upper four bits of the third byte are ten bit The lower four bits of the third byte are one bit ► NMEA0183 COMMUNICATION PROTOCOL Communication RS232 ,NMEA0183 (ASCII) , retain original 68 protocol Baud rate 4800 \9600\19200, could set(default as 19200, one start bit + 8 data bit+non-parity +1 stop bit) Data protocol Communicate use NMEA special sentence (ASCII). After power on module, baud rate is 19200 as default and 0 data output. During operation, compass output sentence...
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