True MEMS gyro compass North Finder, North Finder based on MEMS gyro sensors
North finder is mainly used to find true north automatically. After get heading angle, if north finding inertial
navigation start to move, it could output continuous changing dynamic tilt angle and heading angle. Polaris-II
uses low speed drift MEMS gyro to find north, built-in IMU is used to measure tilt angle and direction
reckoning. It has features of miniature, low power consumption, long usage life, high reliability.
1.2 working principle
MF100 is composed by MEMS gyroscope, dual axis accelerometer, rotation mechanical device and signal
calculating circuit. Mini gyro north finder use speed gyro to measure the component at reference direction of
earth rotation angular speed, and calculate the heading angle.
The earth rotation angular speed is very slow and very hard to
measure, so MF100 uses a high accuracy servo driving system,
driving sensitive axis to rotate towards to one or multiple
horizontal gyroscopes,by connecting the output under different
heading angle and weak signal processing, the heading angle of
the equipment is acquired. Since the earth rotation speed is
ubiquitous and its direction is the true north, so the
measurement of north finder is not subjected to magnetic
interference. According to its working principle, the north finder
should work at horizontal or closely horizontal level.
1.3 working principle
MF100 micro gyro north finder can get the angle of reference line to earth axis true north. MF100 use very
low speed drift MEMS gyro in industry, so it is small, low power consumption, anti-shock, long time working
life and high reliable, etc.
The wide temperature monitor could display true north angle and two axis inclination data in real-time, it
could enter real-time heading relative measuring mode after once north finding(there is 0.1deg/min drift
under relative measuring mode, advice: find north again after 10 minutes), it is for coal mining industry true
north finding specially. Aviation plug is equipped, real time serial data could be got by upper computer for
Current portable measuring equipment depend on digital compass. While digital compass is easily subjected
to electromagnetic interference, usually it could not measure the heading angle precisely of the equipment
relate to earth magnetic field and magnetic declination is hard to compensate. And GPS or flexible gyro is
usually very big and heavy, or its anti-impact performance is not qualified on site, still they are not portable.
low power consumption,24V,0.5A
not affected by magnetic interference, do not depend on satellite
portable, size 5.8*6.8*8.45CM
measure static roll and pitch, static accuracy: 0.2°
static true north finding, 1σ north finding accuracy 0.5°secΦ(Φ local latitude)
after finding north, measure carrier dynamic roll and pitch angle, heading angle dynamic
well and tunnel measurement
Magnetic interference resistant, independent of satellite
Portable, size 5.8*6.8*8.45 cm(sample size)
Static true north measuring, 1σ north finding accuracy could reach 0.5°secφ (φ local
Measure carrier’s statci roll and pitch angle, static accuracy 0.2°
After finding north, measure carrier’s dynamic roll and pitch angle, heading angle
dynamic accuracy 0.1-0.2°/min(optional)
Low power comsumption, 12V,1A.
Reliable, IP65 protection.
Heading calibration for equipment
measurement under well and tunnel
Shenzhen RION, as a positon sensor manufacturer and solution expert, attaches much importance to products reseach and develop which spend over 20% of annual profit. We have the most R&D personnel and best technology comparing with our peer to raise our up on the high level of sensor field. And we orientate ourself to market tightly and engage ourself into providing the most considerate and professional solution and service to customers. RION introduce advanced equipment, such as TEMP&HUMI chamber, salt spray corrosion test chamber, high precision automatic turntable, high precision marble checking platform, digital thermostat drying oven, electrostatic discharge tester and 360 degree mechanical turntable etc, and set up Environmental Testing Laboratory, Product Aging Chamber, 2D&3D Posture Calibration Room and Shake&Impact Test Room for R&D and factory test.
Beside owning excellent hardware, RION also developed 15 sets of software independently and keep developing, including multi-sensor monitor software, remote sensor monitor software, synchronous dynamic l tracking 3D presentation software, tilt switch early warning and debugging software and sensor serial port setting presentation software etc which could apply to XP, Win7, Win8, WinCE and Android system. RION, owning talent and diligent personnel, advanced technology and market-orientated strategy, engages itself in offerring you the most considerate and professional solution and service of position sensor.
You satisfaction is our mission.
Certificates & Honor
Packaging & Shipping
Packaging: carton with sponge
Delivery time: within 7 business days for common order after we receive the full payment
Shipping time: 3-5 work days by DHL/UPS/FEDEX/TNT; 5-7 work days by EMS.
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