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POS geomagnetic measurement circuit of micromechanical gyroscope

A micromachined gyroscope and geomagnetic measurement technology, applied in the field of inertial navigation, can solve the problem that the MPOS system cannot accurately measure the heading angle, and achieve the effect of meeting the needs of data collection

Inactive Publication Date: 2020-06-23
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above technical problems, the present invention provides a micromechanical gyro POS geomagnetic measurement circuit, which solves the problem that the MPOS system cannot accurately measure the heading angle, meets the miniaturization requirements of the POS system, and realizes high-precision measurement of position and attitude

Method used

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  • POS geomagnetic measurement circuit of micromechanical gyroscope
  • POS geomagnetic measurement circuit of micromechanical gyroscope
  • POS geomagnetic measurement circuit of micromechanical gyroscope

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] HMC1001 magnetoresistive sensor circuit wiring diagram, see figure 2 shown;

[0048] In the HMC1001 magnetoresistive sensor: its 4 pins are grounded;

Embodiment 2

[0050] HMC1002 magnetoresistive sensor circuit wiring diagram, see image 3 shown;

[0051] In the HMC1002 magnetoresistive sensor: its pins 1, 6 and 18 are connected in parallel and grounded; pins 8 and 13 are connected in parallel and grounded; pin 7 is grounded;

Embodiment 3

[0053] Wiring schematic diagram of three sets of amplifier circuits, see Figure 4 shown;

[0054] The working connection relationship of each group of amplifiers is the same. Here is an example of the circuit connection relationship of one group of amplifiers;

[0055] In the AMP04F amplifier chip set above: one end of pin 1 is electrically connected to one end of resistor R14, and the other end of resistor R14 is electrically connected to pin 8; one end of pin 2 is electrically connected to one end of resistor R16, and the other end of resistor R16 is connected to 5V high voltage Level; one end of pin 3 is electrically connected to one end of resistor R17, the other end of resistor R17 is electrically connected to pin 4 and then grounded; one end of pin 8 is electrically connected to one end of capacitor C6, and the other end of capacitor C6 is electrically connected to pin 6 ;Pin 7 is connected to 5V high level;

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PUM

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Abstract

The invention discloses a POS geomagnetic measurement circuit of a micromechanical gyroscope. The POS geomagnetic measurement circuit comprises a three-axis magnetometer, a signal amplification circuit, an AD conversion acquisition circuit, a voltage boosting pulse circuit, a magnetic sensor reset position circuit and an SPI data communication circuit. An HMC1001 / 1002 single-axis and double-axis magnetoresistive sensors are adopted to form a three-axis magnetometer. Three-axis magnetic field measurement is achieved through discrete design and orthogonal installation. The magnetic sensor resetposition circuit receives pulse signals to reset and set the three-axis magnetometer. It is guaranteed that the single-axis / double-axis magnetic sensor is not interfered by an external high-intensitymagnetic field, and therefore the data collection requirement of an MPOS system is met, and high-precision measurement of the position posture is achieved.

Description

technical field [0001] The patent of the present invention relates to the technical field of inertial navigation, in particular to a micromechanical gyro POS geomagnetic measurement circuit, which can be applied to a micromechanical POS system. Background technique [0002] By obtaining high-resolution earth observation data, the aviation earth observation system realizes research in major fields such as aerial surveying and mapping, monitoring of major natural disasters, and meteorological and hydrological detection; It is difficult to meet the motion requirements of high-resolution aerial remote sensing, so it is necessary to use a high-precision position and attitude measurement system (Position and Orientation System, POS) to provide high-precision measurement data to achieve high-resolution imaging requirements; [0003] With the continuous development of the earth observation system, the micro remote sensing payload system with low cost, high efficiency and high mobili...

Claims

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Application Information

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IPC IPC(8): G01C21/16G01C21/08
CPCG01C21/165G01C21/08
Inventor 李建利陈子凡闫东坤刘刚曲春宇茅耘恺宫晓琳
Owner BEIHANG UNIV