Strapdown type hole drilling inclinometer based on magnetic resistance and inclination sensor

An inclination sensor and inclinometer technology, applied in the field of borehole inclinometers, can solve the problems of high cost, large volume, complex fluxgate circuit processing, etc., and achieve the effects of improving efficiency, reducing production costs and reducing complexity

Inactive Publication Date: 2007-04-18
BEIHANG UNIV
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  • Abstract
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Problems solved by technology

However, the processing of the fluxgate circuit is complicated, the volume is large, and the cost is relatively high.

Method used

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  • Strapdown type hole drilling inclinometer based on magnetic resistance and inclination sensor
  • Strapdown type hole drilling inclinometer based on magnetic resistance and inclination sensor
  • Strapdown type hole drilling inclinometer based on magnetic resistance and inclination sensor

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Embodiment Construction

[0028] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0029] Please refer to shown in Fig. 1, the present invention is a kind of strapdown borehole inclinometer based on magnetic resistance and inclination sensor, by ground computer (for demarcating azimuth, vertex angle; Or for downloading, updating program), The surface device (the device used to supply power to the downhole probe, receive and display measurement data, and collect downhole depth information) and the downhole probe are composed of a mechanical skeleton and a hardware circuit board. The hardware circuit board is installed on the machine on the skeleton. The hardware circuit board is composed of a three-axis magnetoresistive sensor, a two-axis inclination sensor, a single-chip microcomputer with 24-bit A / D, a communication circuit, an RS232 interface circuit and a power supply circuit.

[0030] In the present invention, as shown in Fig. 2, 2A an...

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PUM

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Abstract

This invention discloses a kind of strapdown drilling dip-compass based on magnetic drag and rake angle sensor. Down-hole searching tube is composed of mechanical skeleton and hardware circuit boards. The hardware circuit board is installed in the mechanical skeleton. The said hardware circuit board is composed of three-axis magnetic drag sensor, two-axis rake angle sensor, own 24 bit A/D SCM, communication circuit, RS232 interface circuit and power circuit. It includes three-axis integration magnetic drag sensor, two-axis integration rake angle sensor, own A/D conversion SCM and the communications circuit which contacts the ground device. It can not only improve the measuring accuracy of the inclinometer, reduce its volume, low cost and can improve the efficiency of equipment production.

Description

technical field [0001] The present invention relates to a borehole inclinometer, more particularly, to a strapdown borehole inclinometer based on magnetoresistance and inclination sensors. Background technique [0002] The borehole inclinometer is an instrument used to measure the inclination and inclination of the borehole. It is generally composed of the probe part in the borehole and the ground device. It can be widely used in logging fields such as coal fields, engineering, hydrology, and geology. [0003] The inclination of the borehole is expressed by the apex angle, and the inclination is expressed by the azimuth angle. There are many measurement principles of the borehole inclinometer, among which the gyro-type inclinometer uses a gyroscope to determine the azimuth angle and a gravity accelerometer to determine the apex angle. This kind of inclinometer can be used in non-magnetic and magnetic environments, and has high measurement accuracy, but the gyroscope is bulk...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/022
Inventor 袁梅董韶鹏曲方伟
Owner BEIHANG UNIV
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