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Non-excavated underground pipe line attitude angle measuring sensing head

An underground pipeline and azimuth angle technology, applied in the field of sensing head, can solve the problems of increased detection error, low positioning accuracy, and insufficient detection depth, etc., and achieve the effects of easy portability, high measurement accuracy, and simple operation

Inactive Publication Date: 2008-08-20
SHANGHAI UNIV
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Problems solved by technology

However, the underground pipeline detection methods currently used at home and abroad have problems such as low positioning accuracy, detection error increases significantly with the increase of excavation depth, detection depth is not enough, and it is difficult to detect densely interlaced areas of underground pipeline networks.

Method used

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  • Non-excavated underground pipe line attitude angle measuring sensing head
  • Non-excavated underground pipe line attitude angle measuring sensing head
  • Non-excavated underground pipe line attitude angle measuring sensing head

Examples

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Embodiment Construction

[0020] A preferred example of the present invention is described in detail as follows in conjunction with accompanying drawing:

[0021] Referring to Fig. 1, the measuring system when the sensing head for space azimuth measurement of the trenchless underground pipeline is in use includes a sensing head, a meter device, a take-up and pay-off mechanism, a signal acquisition control circuit, a computer and a display. The sensing head advances in the pipeline 1 under the drag of the take-up and pay-off device, the traveling speed can be controlled by the controller of the take-up and pay-off mechanism, and the traveling distance can be measured by the meter device.

[0022] Referring to FIG. 2 , the sensor head for space azimuth measurement of the trenchless underground pipeline has two centering mechanisms 2 , a universal joint 3 , a PSD fixed end 4 , and a laser fixed end 5 . One end of the two centering mechanisms fixes the PSD fixed end 4 and the laser fixed end 5 respectively...

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Abstract

The invention relates to an attitude angle measuring sensing head without excavating an underground pipeline, which comprises two centering mechanisms that are respectively fixed with two fixing ends; wherein, the two fixing ends are connected by a universal joint, one fixing end is fixed with a position sensing device PSD, thus forming a PSD fixing end, and the other fixing end is fixed with a laser device, thus forming a laser device fixing end, and laser beams emitted by the laser device fall on the position sensing device PSD. The PSD detects the positions of faculas and consequently computes the attitude angle of a pipeline. The attitude angle measuring sensing head without excavating an underground pipeline can be fit for different curved radiuses of the pipeline, and has simple operation, high measurement precision, convenient assembly and disassembly, and easy carrying.

Description

technical field [0001] The invention relates to a sensor head for measuring the spatial azimuth angle of a non-excavating underground pipeline, which belongs to the technical field of mechanical and electronic engineering. Background technique [0002] In engineering measurement, angle measurement is very common, but in many cases, space angle measurement is difficult to achieve with an angle measuring instrument. Especially in recent years, the modern non-excavation technology of pipelines has been increasingly widely used in our country. In non-excavation construction, it is necessary to detect the position and shape of the laid underground pipelines to ensure that the newly laid pipelines will not damage the original pipelines. It also prevents newly laid pipelines from being damaged by future laying works. However, the underground pipeline detection methods currently used at home and abroad have problems such as low positioning accuracy, detection error increases signif...

Claims

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Application Information

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IPC IPC(8): G01B11/26
Inventor 沈林勇李亚旻章亚男陈勇钱晋武
Owner SHANGHAI UNIV
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