KR101494399B1 - A Magnetic Applied Management System - Google Patents

Abstract

The present invention relates to a submerged object management system for attaching magnetic markers to underground objects, detecting the magnetic markers, performing a positional amount of the magnetic markers, constructing a DB, and linking with a GIS for efficient management.
In particular, the magnetic marker portion of the present invention comprises: a magnetic body of a permanent magnet member; A lower end portion for attaching to an upper end portion coated with the magnetic body and a subterranean buried object; And a hinge part hinged to the lower end so that the upper end can be tilted.

Description

{A Magnetic Applied Management System}

The present invention relates to a submerged object management system for attaching magnetic markers (magnetic markers) to underground objects (underground objects), detecting the magnetic markers, performing a positional amount of the magnetic markers, constructing a DB, will be.

In recent years, installation of city gas supply pipes, water supply and sewage pipes, electricity and communication lines has been rapidly increasing in accordance with progress of urbanization. These facilities are generally grounded for cosmetic reasons, in order to protect the facilities from the ground environment. However, since the position and depth information of underground buried objects are not accumulated properly, it is difficult to visually understand the position and the state of the underground buried object.

In addition, it is difficult to accurately locate existing underground buried objects when newly installed underground buried objects, etc., resulting in an increase in time and cost, resulting in damage to existing underground buried objects and safety problems of workers.

The present invention relates to Registration No. 10-0732127 (Jun. 27, 2007). The above-mentioned patent is a system for managing a facility of a cylindrical pipe line buried underground, and more specifically,

At least two magnetic vector sensors capable of sensing the direction of the earth magnetic field are arranged on a parallel line so as to cancel the earth magnetic field and to detect only the purely distorted magnetic field and to detect the direction and size of the distorted magnetic field detected by the sensor means And a magnetic marker attached to the cylindrical pipe, wherein the magnetic marker is composed of an upper end portion and a lower end portion, and the lower end portion is composed of an upper end portion and a lower end portion, Wherein the magnetic marker portion has a curved surface structure such that the central position of the magnetic substance is orthogonal to the ground surface, and magnetic polarity is displayed on an upper end portion of the magnetic marker portion.

The underground excavation safety caused by the mismatch between design and construction by measuring the pattern or change amount of the earth magnetic field change caused by the direction of the magnetic line of force generated in the permanent magnet and detecting the planar burial position of the underground facility with the magnetic marker part without error We provide a subway management system that can prevent accidents in advance,

There is provided a underground buried object management system capable of easily attaching a magnetic marker portion made of a permanent magnet to an underground object and measuring a magnetic field with a constant direction of magnetic force lines,

It is possible to detect the magnetic field generated by the magnetic marker portion and convert the magnitude to digital data to facilitate the processing of numbers and graphics to output detection results in various visual forms, Management system.

In the present invention, when a magnetic detector is used as in the above-mentioned patent, generally, a magnetic substance is attached around a subterranean material in order to amplify a change in the magnetic field of the earth, but it is difficult to distinguish between a general metal body and a magnetic body, The general detector of the present invention displays the detection value instantaneously, so that it is difficult for the detector to recognize the change pattern of the detection value, the position of the magnetic coil is inaccurate due to the installation of the magnetic coil at the time of excavation and burial construction, In particular,

In order to amplify the change of the magnetic field of the earth, a more useful method for contacting and attaching the magnetic body to be attached to the cylindrical pipe is proposed.

The present invention relates to a facility management system for a cylindrical pipe line buried underground,

A plurality of magnetic vector sensors capable of sensing the direction of the earth magnetic field are arranged on parallel lines to cancel out the magnetic field of the earth and to detect only the pure distortion magnetic field and the direction and the size of the distorted magnetic field detected by the sensor means, And a magnetic marker unit attached to the cylindrical pipe, the magnetic marker unit comprising an upper end portion and a lower end portion, and the lower end portion of the magnetic marker portion has a center position of the magnetic body And the magnetic polarity is displayed on the upper end of the magnetic marker portion. The magnetic polarity displayed on the polarity display section preferably selects the N pole.

The magnetic marker unit includes a covering member that is surface-treated for waterproofing and moisture-proofing over the entire surface of the magnetic member, and a polarity indicating unit for indicating polarity of the magnetic member is provided at an upper end of the magnetic marker unit.

Wherein the control means comprises: a digital gradiometer for receiving as output the outputs of the two magnetic vector sensors of the sensor means, generating a frequency corresponding to the frequency difference between the two signals and outputting the frequency as digital data, A voltage-controlled oscillator for outputting the analog signal generated from the digital-analog converter to a frequency band in which auditory sense can be sensed, a voice amplifier for amplifying the output of the voltage- An interface unit for inputting the output of the digital graphic meter to a microprocessor, a microprocessor for processing a signal output from the interface unit, an LCD device for outputting data output from the microprocessor in numerical or graphic form, a GPS Through the current Receiving value includes the external system connection for connecting the GIS information that is input from the GPS receiver and out of the GIS system for input to the microprocessor by wire or wirelessly.

The microprocessor compares and searches the location information received from the GPS receiver with the embedded information of the measurement area from the external GIS system and outputs buried information corresponding to the received location to the LCD device.

The control means may set the detection values detected in the index according to the scanning method to a predetermined pattern so as to distinguish the magnetic field disturbance object around the general metal object or the facilities buried in the ground and the magnetic marker portion, .

The microprocessor stores the detected values for one period scan at a high resolution and continuously outputs the detected values through the LCD device.

According to the present invention, on the basis of the above description,

A magnetic body of the permanent magnet member; An upper end coated with plastic after nickel plating for moisture proofing of the magnetic body and a lower end for attaching to the underground buried material; And a hinge unit hinged to the lower end so that the upper end can be tilted when the upper end and the lower end are spaced apart from each other.

According to the present invention, when a magnetic detector is used, it is generally used to attach a magnetic body around a subterranean material in order to amplify a change in the magnetic field of the earth, but it is difficult to distinguish between a general metal body and a magnetic body because there is no directionality. Since the numerical values are displayed in a momentary manner, it is possible to solve the problem that the detector does not recognize the change pattern of the detection value,

 By precisely installing the magnetic coil, it is possible to easily locate the magnetic coil at the time of excavation and burial, reduce the possibility of loss of the magnetic coil, accurately and easily attach the magnetic body to the cylindrical pipe, .

1A is a plan view of a magnetic marker portion according to the present invention; Front view; Side view; Installation view seen from side B; Other installation drawings seen from the C side;
Figures 2A and 2B are partial views illustrating another embodiment of the present invention
Fig. 3 is a diagram showing distribution and detection method of magnetic force lines of magnetic markers installed in underground facilities
Fig. 4 Block diagram of underground detection system
5 shows an example of an output characteristic curve of the magnetic sensor
6 graph showing the pattern of detection value change

Hereinafter, the configuration of the present invention will be described with reference to the drawings.

FIG. 3 shows a magnetic line distribution and detection method of a magnetic marker installed in an underground facility (i.e., an underground facility). The magnetic marker 11 has a permanent life, and is made of a waterproof and waterproof permanent magnet (ferrite) Nickel plating and urethane film coating treatment for moisture proofing, and is attached to the facility at the time of installing underground objects 18 such as water supply and drainage pipes, city gas supply pipes, electricity and communication lines.

The underground pit detector 10 includes a support rod 15 and a first fluxgate sensor 12 and a second fluxgate sensor 13 provided in the support rod 15 to detect the magnetostatic flux 14 of the magnetic marker 11 And the first fluxgate sensor 12 and the second fluxgate sensor 13 are vector sensors and measure an average magnetic field component corresponding to each sensing axis.

The first fluxgate sensor 12 and the second fluxgate sensor 13 are located in different directions so that the polarities of the measured magnetic fields are opposite to each other and the fluxgate sensor 12 and the second fluxgate sensor 13 ), It is possible to eliminate the components commonly sensed by the two sensors, such as the geomagnetic field, so that only the magnetic field component of the liquid level remains.

The magnetic field measured by the first fluxgate sensor 12 close to the magnetic marker 11 has a value much larger than the value specified by the second fluxgate sensor 13. [ Therefore, the difference between the magnetic field strengths of the magnetic marker 11 and the magnetic field strength of the magnetic marker 11, which are magnetic components, is such that the magnetic field strength of the magnetic field strength measured through the speaker or LCD device built in the underground- Output.

FIG. 4 is a block diagram of a submersible detection system according to the present invention. The first fluxgate sensor 12 and the second fluxgate sensor 13 are installed on a support rod 15 such that the axis thereof is straight. The first fluxgate sensor 12 and the second fluxgate sensor 13 measure the magnetic field generated by the magnetic marker 11 at their respective positions and input the measured magnetic field to the digital gravimeter 20. [ The digital gradiometer 20 performs digital mixing of the magnetic field waveforms input from the first fluxgate sensor 12 and the second fluxgate sensor 13. [ That is, a frequency signal corresponding to the frequency difference between the two input signals is generated, and the magnitude of the mixed frequency of the two waveforms is output as digital data. The digital data output from the digital gradiometer 20 is transmitted to the microprocessor 22 through the input interface 21 for outputting in numerical or graphical form. The microprocessor 22 is provided with a storage means for receiving a digital signal corresponding to the strength of the magnetic field to calculate the intensity of the magnetic field generated by the magnetic marker 11, Is displayed on the LCD display device 24 in the form of letters, numbers, or graphs. The microprocessor 22 is connected to the GPS receiver 32 and the external system connector 33. The GPS receiver 32 can receive the current position of the underground object detector 10 via GPS. The received location information is processed by the microprocessor 22 and stored in the storage means of the microprocessor 22.

The external system connection unit 33 is connected to the external GIS system wirelessly or by wire to inquire buried information of the area to be measured. The microprocessor 22 refers to the digital data output from the digital graphic meter 20 and if it is confirmed that the magnetic marker 11 is buried, the microprocessor 22 receives the current position information from the GPS receiver, 33) and receives the buried information corresponding to the current location from the external GIS system. Then, the microprocessor 22 compares the buried information with the location, searches for buried information on the buried underground, and outputs the embedded information to the LCD device 24 through the output interface 23 in the form of a graphic. The digital data output from the digital gradiometer 20 is sent to the input of the digital-to-analog converter 25 for outputting with an external voice of a strength corresponding to its size. The digital-to-analog converter 25 outputs the input digital data as an analog voice signal in the range of 0 to 2.5 V according to the size thereof. The sensitivity adjuster 26 adjusts the sensitivity of the signal by adjusting the threshold voltage of the digital-to-analog converter 25.

A +5 V power is supplied to the first fluxgate sensor 12, the second fluxgate sensor 13 and the digital gradiometer 20 by a single constant voltage source, and the digital-analog converter 25 and the voltage- (27) and the voice amplifier (28) are driven by another constant voltage source.

The output frequencies of the first fluxgate sensor 12 and the second fluxgate sensor 13 are mixed to obtain a difference between the measured magnetic fields so as to generate a signal indicating the presence or absence of the magnetic marker 11. [ )do. This mixing is performed in the digital gradiometer 20. The output from the digital gradiometer 20 has a parallel data structure that varies with the magnitude of the mixed frequency. It also has an output indicating the sign bit. This indicates which of the first fluxgate sensor 12 and the second fluxgate sensor 13 has a large magnetic field. Thus, the output "0" means that the two sensors detect a magnetic field of the same size, and the output of the highest value (eg, 255) means that the magnetic field difference is large. The digital gradiometer 20 observes the maximum and minimum values of the field length, depending on the crystal oscillator frequency, but automatically calibrating for 10 to 20 seconds from when the switch is turned on. At this time, the digital gradiometer (20) is arranged in the north-south direction, and the end portion is tilted by the inclination angle of the geomagnetic field system. Then, by turning on the switch and rotating the digital gradiometer (20) 180 ° for the adjustment time (about 10 seconds), the sensitivity and zero offset for the sensor are determined and the error from the sensor difference is corrected.

The most difficult part in maximizing the performance of the underground burial detector 10 is to mechanically arrange the first fluxgate sensor 12 and the second fluxgate sensor 13. The fixation of the first fluxgate sensor 12 and the second fluxgate sensor 13 is such that the first fluxgate sensor 12 is aligned with the axis of the second fluxgate sensor 13 exactly. In the present invention, first, the first fluxgate sensor 12 is fixed and the second fluxgate sensor 13 is fixed with a fixing screw having a non-magnetic property. In this way, while the sensor device is being measured, the axis of the first fluxgate sensor 12 and the second fluxgate sensor 13 are aligned while rotating the fixing screw so as to keep certain measured values while continuing to rotate.

In the present invention, in order to allow the detector to easily recognize the detection value change pattern, the detection value of the detector 10 during one cycle scan of the microprocessor 22 of the microprocessor 22 incorporated in the detector 10 is set to a high resolution So that the discrimination between the magnetic marker unit 100 and the magnetic disturbance object is distinguished in the form of a graph, thereby facilitating the judgment.

Regarding the characteristics of the underground burial management system using the polarity of the magnetic marker, FIG. 5 shows the output characteristic curve of the magnetic sensor, and the range of the earth magnetic field is -0.5G to + 0.5G. +/- indicates the direction of the Earth's magnetic field. On the other hand, FIG. 6 is a graph showing a detection value change pattern. However, it can be seen that the distribution of the magnetic flux density becomes regular around the vertical point of the center of the upper portion of the magnetic marker 100 when the computer analysis is performed.

The first fluxgate sensor 12 and the second fluxgate sensor 13 use a vector sensor having a directionality as a fluxgate type magnetic sensor and the direction of the earth magnetic field is different between the first fluxgate sensor 12 and the second fluxgate sensor 12. [ Has a maximum value when it coincides with the vertical axis of the flux gate sensor 13, and has a minimum value when it coincides with the horizontal axis. Therefore, the difference in the vector amounts of the first fluxgate sensor 12 and the second fluxgate sensor 13 is the magnitude of the Earth magnetic field change, and the direction of the vector amount indicates the polarity position of the magnetic marker unit 100. [

According to the present invention, in the method of attaching the magnetic marker attached to the facility, the portion indicated by the N pole is placed on the upper portion so that the attachment state of the magnetic body is made constant during the operation, and the detection value detected on the surface is scanned It is possible to easily distinguish a magnetic metal disturbance object around a general metal object or a buried object magnetically magnetized by a change pattern of a detection value and a magnetic marker portion attached to the facility to minimize a detection error .

In addition, according to the degree of change of the magnetic field of the earth being proportional to the magnitude of the magnetic flux density generated by the magnetic body attached to the buried material, a structure easy to adhere to the cylindrical channel is selected so that the position of the center of the magnetic body is orthogonal to the earth surface, A polarity indicator is formed at the upper end of the magnetic marker so that the operator can easily attach the polarity to the position.

In the above, further details will be cited in the above-mentioned Japanese Patent No. 10-0732127.

On the basis of the above description, particularly in the magnetic marker portion of the present invention,

A plan view of the magnetic marker unit 100 shown in FIG. 1A; Front view; Looking specifically at the side view,

A magnetic body (101) of a permanent magnet member in which an upper portion is disposed at an N pole lower portion and an S pole at an upper portion; An upper part 103 covered with a plastic (or acrylic resin) after the nickel plating (or urethane film coding) processing for waterproofing and moisture proofing of the magnetic material 101 and a lower part of a city gas supply pipe (or a water supply and drainage pipe, A cover member 102 made of a lower end portion 104 for attachment to the buried object 18; A polarity display part 105 provided on an upper surface 100a of the upper part 103; And a hinge part (106) hinged to the lower end part (104) so that the upper end part (103) can be tilted.

On the other hand, the bottom surface 100b of the lower end portion 104 may have a curved surface shape to increase the attachment surface of the cylindrical pipe and facilitate the orthogonal alignment with the ground surface.

The upper end portion 103 and the lower end portion 104 of the covering material are coupled through the hinge portion 106. [ At this time, it is preferable to secure a spaced distance between the upper end portion 103 and the lower end portion 104 so as to be relatively inclined. The hinge portion 106 adopts a material such as a metal material, a synthetic resin material, or the like which is somewhat refractable and firmly fixes the upper end portion 103 and the lower end portion 104 of the covering material. Particularly, the hinge portion 106 is formed on the side wall surface of the cover 102 so as not to damage the body of the magnetic marker portion 100, and the hinge portion 106 is formed on the side wall surface of the upper end portion 103 and the lower end portion 104 Respectively.

Referring to FIGS. 1B and 1C and the actual installation work,

First, the bottom surface 100b of the lower end portion 104 is attached to the underground pipe 18 channel. At this time, the attachment follows the conventional working method.

Thereafter, the horizontal angle of the upper surface 100a of the upper end portion is adjusted so as to be orthogonal to the ground surface. Such an operation can be performed because the hinge portion 106 can bend.

More specifically

The bottom surface 100b of the lower end portion 104 is adhered on the curved surface of the underground embankment 18 made of a cylindrical pipe with an unsuccessful horizontal inclination so that the left tilting (+ a) or the right tilting (-a) The upper surface 100a of the right tilt a can be determined by inducing the tilt of the hinge portion 106 while moving the tilted upper surface 100a` of the upper portion 103 using a horizontal system .

When the state of the right tilt (a) is obtained, a filling member 107 such as cement, silicone, or synthetic resin is filled between the upper end 103 and the lower end 104 to maintain the above state.

On the other hand, when the bottom surface 100b of the lower end portion 104 is curved, only one supporting point is formed when the curved surface has different curvatures (i.e., outer circumferential size) There may be cases where stable support can not be achieved.

Thus, as shown in FIGS. 2A and 2B, at least two support points t3 are formed in the bottom surface 100b of the lower end portion 104 so as to be stably supported from the cylindrical outer periphery of the underground pipe 18 The bottom surface 100b may have a triangular shape. At this time, a triangle is formed so as to form a central angle t2 by giving an outer peripheral angle (t1) from both sides of the outer periphery of the bottom surface of the lower end portion (104). The center angle t2 is preferably about 110 to 170 degrees. After the fulcrum t3 is brought into contact with the fulcrum to form a fulcrum, the remaining voids can be filled with the filling member to be hardened.

An underground burial detector 10; A magnetic marker 11; A first fluxgate sensor (12) underground (18); A digital gradiometer 20; A microprocessor 22; A LCD display device 24; A digital-to-analog converter 25; A magnetic marker unit 100; The magnetic body 101,

Claims (1)

Sensor means in which a plurality of magnetic vector sensors capable of sensing the direction of the earth magnetic field so as to cancel the earth magnetic field and detect only the purely distorted magnetic field are arranged on a parallel line,
A control unit for converting the direction and magnitude of the distorted magnetic field sensed by the sensor unit into a detection value and displaying the converted sensed value, and displaying the graphically; and a magnetic marker unit attached to the cylindrical pipe, In the system,
The magnetic marker unit includes:
A magnetic body of the permanent magnet member; An upper end coated with plastic after nickel plating for moisture proofing of the magnetic body and a lower end for attaching to the underground buried material; And a hinge portion attached to the side wall surface of the upper end portion and the lower end portion to be hinged so that the upper end portion can be tilted with respect to the lower end portion in a state where the upper end portion and the lower end portion are spaced apart,
A triangular shape in which two supporting points t3 are formed so as to be stably supported even when the curvature of the cylindrical duct is changed.
The outer peripheral edge of the lower end of the lower end portion is given an outer peripheral angle t1 to form a central angle t2 so as to form a triangular shape and contact with the cylindrical pipe to form two supporting points and the remaining hollows are filled with the filling member Underground Management System

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