Device for implementing rough north-seeking of gyroscope using electronic compass

An electronic compass and gyroscope technology, which is applied to gyroscope/steering sensing equipment, compass, measuring device and other directions, can solve the problem of long time consumption for north seeking, and achieve the effect of shortening north seeking time, low requirements and good reliability

Inactive Publication Date: 2008-01-16
TIANJIN UNIV
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  • Abstract
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Problems solved by technology

The north-seeking time combined with the north-seeking method wi

Method used

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  • Device for implementing rough north-seeking of gyroscope using electronic compass
  • Device for implementing rough north-seeking of gyroscope using electronic compass
  • Device for implementing rough north-seeking of gyroscope using electronic compass

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with the accompanying drawings and the embodiment-automatic intelligent north-finding system.

[0019] The fully automatic intelligent north-seeking system is shown in Figure 1, and the fully automatic measuring system is placed at the measuring location. The system starts self-test after power-on. After the self-test passes, it starts to automatically level, and then the electronic compass starts to work. The measured north direction signal is input to the digital signal processor DSP. According to the data processing results, the complex programmable logic device CPLD passes through the motor drive module. Drive the stepping motor, through the slewing system, move the aiming part of the gyro theodolite towards the roughly north direction, repeat this process, and finally realize the rough north finding of the gyro theodolite; the gyro theodolite is in the rough north direction, and the DSP controls th...

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Abstract

The invention relates to a device for realizing coarse north searching of gyroscope using electric compass, belonging to the technical filed of position and orientation of gyroscopic theodolite. The inventive method can realize automatic north searching, and improve the response speed and north searching precision of gyroscopic theodolite. The device comprises an electric compass, a digital signal processor, a complex programmable logic device, a motor driving module, a stepping motor, a junction box, a retarder, and a rotary platform, wherein the above components are sequentially connected, the digital signal processor can determine the direction of the stepping motor in accordance with the deviation between the north direction reflected by the angle value outputted from the electric compass and true north direction, and determine the operating speed of the stepping motor through the complex programmable logic device, and the digital signal processor is also connected with the gyroscopic theodolite via a gyroscope landing device. The invention is mainly used for manufacturing the device for realizing coarse north searching of gyroscope using electric compass.

Description

technical field [0001] The invention belongs to the positioning and orientation technology of a gyroscope theodolite, in particular to a device for realizing rough north-finding of a gyroscope by using an electronic compass. Background technique [0002] In the modern control concept, more and more emphasis has been placed on reducing human intervention on the instrument and strengthening its own automation, intelligence and self-diagnosis capabilities. In the modern north-seeking survey, people are also working on the research of north-seeking intelligence and automation. At present, domestic mechanical gyroscopes mostly use the tracking reversal point method and transit method for north finding. Tracking and reversing point method for north-seeking, the labor intensity of the operator is high and fatigue is easy, resulting in a large error in the cursor position record during the measurement process, which greatly affects the measurement accuracy and speed, so the trackin...

Claims

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Application Information

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IPC IPC(8): G01C1/02G01C19/00G01C17/32
Inventor 林玉池林明春夏桂锁黄银国
Owner TIANJIN UNIV
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