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HCM705B

High Accuracy Gyro Compass

The best heading accuracy of HCM705B 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 HCM705B 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, HCM705B should do its installation in the perpendicular to the movement direction.

Содержание HCM705B

Страница 1: ...01 Tilt sensor production standards GB T 191 SJ 20873 2003 inclinometer general specification of Level Gyro accelerometer test standard QJ 2318 92 Gyro accelerometer test methods Software development...

Страница 2: ...M705B with small volume low power consumption can be applied in antenna stable vehicles systems integration and many other fields high shock resistance and high reliability make compass work normally...

Страница 3: ...5 Measuring range 0 1 30 Measuring range 0 1 60 Measuring range 0 2 180 Measuring range Roll tilt range 180 Resolution 0 1 Calibration Hard iron calibration Yes Soft iron calibration Yes Magnetic fiel...

Страница 4: ...iron magnets engines and other magnetic objects as much possible as you can Need control over 30CM distance different magnetic interfere the compass in different distance at least even there are these...

Страница 5: ...ic 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 Doi...

Страница 6: ...HCM705B High Accuracy Gyro Compass Dimension Size L W H 94 31 24MM...

Страница 7: ...use about 2 seconds the internal CPU automatically calculate just sampling data after the calculation will return a set of data is the percentage value of the data just gain 5 Then send the save calib...

Страница 8: ...ic level about 90 to change do not require too precise Example as left Pic A starting point for H 0 R 0 P 15 firstly calibrate the pitch value P please keep this posture for 2 to 3 seconds don t move...

Страница 9: ...will take the thirteenth point After took the thirteenth point again rotate 90 horizontally please keep this posture for 2 to 3 seconds don t move the system will take fourteenth point After took the...

Страница 10: ...point After took the twenty third point again rotate 90 horizontally alternate the negative Roll value R 55 please keep this posture for 2 to 3 seconds don t move the system will take the twenty fourt...

Страница 11: ...e calibration Click this button keep the compass shaking state to avoid incorrect calibration of the acquisition Save stop calibration and save data Specific calibration method please refer to this sp...

Страница 12: ...etting failure 0X07 Read declination command 68 04 00 07 0b Data domain 0byte No Data domain command 0X87 Sensor answer reply E g 68 06 00 87 02 08 97 Data domine 2byte Data domain in the number means...

Страница 13: ...uccess FF Failure 0X0C Setting angle output mode 68 05 00 0C 00 11 Data domain 1byte 00 answer reply mode 01 Auto output mode Default answer reply mode 0X8C Sensor answer reply command E g 68 05 00 8C...

Страница 14: ...node must send one time 0X88 Sensor answer reply command 68 05 00 88 xx cs Data domain 1byte Data domain in the number means the sensor response result xx 0 18 00 0 point 01 1 point 02 2 points 0F 15...

Страница 15: ...and be used 68 04 00 14 18 Data domain 0byte 0X94 Sensor answer reply command E g 68 YY 00 94 XX ID1 DA1 DA2 DA3 DA4 ID2 DB1 DB2 DB3 DB4 CE Data domain 5 46byte Data domain in the number means the sen...

Страница 16: ...Data domain 1byte Data domain in the number means the sensor response result 00 Success FF Failure 0X50 Set the geomagnetic threshold judgment command 68 06 00 50 24 16 CS Data domain 2byte MAX BYTE4...

Страница 17: ...ess Default is 00 Command word Fixed 84 Pitch angle The first byte is the sign bit 00 is positive angle 10 is negative angle The second byte is the integer bit Is compressed BCD code The third byte is...

Страница 18: ...HCM705B High Accuracy Gyro Compass...