Cable path identification signal receiver

Abstract

The utility model discloses a cable path identification signal receiver, which relates to the technical field of receivers and comprises a display controller and a body. A central processing unit is arranged inside the display control instrument, a liquid crystal display screen and keys are arranged outside the display control instrument, and the liquid crystal display screen and the keys are electrically connected with the central processing unit; the first horizontal antenna, the second horizontal antenna, the first vertical antenna, the second vertical antenna and the compass antenna are connected with different connecting ports of the machine body, and the connecting ports are electrically connected with the central processing unit; the position and the direction of an underground cable are judged by receiving signals through the antenna, the position of a pipeline below the receiver is displayed through the liquid crystal display screen, the pipeline can be rapidly tracked, the telescopic handle is connected to the end of the machine body, and the height is adjusted according to stretching of the telescopic handle during detection so that the device can adapt to the height of a tester. And a tester does not need to bend down to carry the receiver by hand for a long time, so that the labor intensity of workers is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to receiver technical field, especially a cable path identification signal receiver. BACKGROUND

[0002] Cable path identification signal receiver is a kind of electronic equipment for detecting underground cable position, it is usually used in conjunction with transmitter, and the signal of specific frequency is sent to target cable by transmitter, and receiver is used to receive these signals, to determine the position and depth of cable.

[0003] But the height of cable path identification signal receiver in prior art is certain, but due to the different height of staff, staff often need to bend down for a long time to hold receiver and work, prone to staff overexertion, not conducive to long time, continuous cable detection. UTILITY MODEL CONTENT

[0004] To solve prior art problems, the utility model provides a cable path identification signal receiver, including: display control instrument and body;

[0005] The display control instrument is vertically connected with one end of the body;

[0006] Central processing unit is arranged in the display control instrument, liquid crystal display, button are arranged outside, and the liquid crystal display and the button are electrically connected with the central processing unit;

[0007] First horizontal antenna, second horizontal antenna, first vertical antenna, second vertical antenna and compass antenna are connected with different connection ports of the body, and the connection port is electrically connected with the central processing unit;

[0008] The end connected with the display control instrument of the body is connected with telescopic handle.

[0009] Further, it further includes mixer / filter / amplifier, located in the body, and electrically connected with the central processing unit;

[0010] The first horizontal antenna, the second horizontal antenna, the first vertical antenna, the second vertical antenna and the compass antenna are electrically connected with the mixer / filter / amplifier by different connection ports.

[0011] Further, it further includes: A / D converter;

[0012] The A / D converter is electrically connected with the mixer / filter / amplifier and the central processing unit.

[0013] Further, the machine body is provided with an expansion interface electrically connected to the central processor.

[0014] The expansion interface is used to connect a flexible coupling clamp or an A-shaped bracket.

[0015] Further, the machine body is provided with a loudspeaker electrically connected to the central processor.

[0016] Further, the telescopic handle comprises:

[0017] Two first slot bodies are formed in opposite side walls of the machine body.

[0018] A second slot body is formed in an end of the machine body, and the first slot body and the second slot body are in communication and jointly form a U-shaped slot.

[0019] Sliding grooves are formed in opposite side walls of the first slot body.

[0020] A U-shaped handle is provided with sliding blocks connected to opposite side walls of two side rods of the U-shaped handle, the sliding blocks are slidingly connected in the sliding grooves, the two side rods of the U-shaped handle are respectively located in the two first slot bodies, and a connecting rod between the two side rods of the U-shaped handle is located in the second slot body.

[0021] A fastener is threadedly connected to one of the side rods of the U-shaped handle.

[0022] Further, notches are formed in top portions of two side walls of the second slot body.

[0023] Further, the display control instrument is provided with a lithium battery pack electrically connected to the central processor.

[0024] Further, the display control instrument is provided with a Type_C USB port electrically connected to the lithium battery pack.

[0025] Further, the machine body is provided with a loudspeaker electrically connected to the central processor.

[0026] The cable path identification signal receiver has the advantages that the cable path identification signal receiver comprises a display control instrument and a fuselage which are vertically connected, a central processing unit is arranged in the display control instrument, a liquid crystal display and a button are arranged outside the display control instrument, the fuselage is provided with a first horizontal antenna, a second horizontal antenna, a first vertical antenna, a second vertical antenna and a compass antenna, the positions and directions of underground cables are distinguished through the antennas, the positions of pipelines below the receiver are displayed through the liquid crystal display, and the pipelines can be tracked quickly; and a telescopic handle is arranged on the fuselage, the height of the telescopic handle is adjusted according to the telescopic handle when the receiver is used for detection, so that the height of the telescopic handle is adapted to the height of a tester, the tester does not need to hold the receiver for a long time, and the labor intensity of the tester is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a structural schematic view of a cable path identification signal receiver provided by the utility model;

[0028] Figure 2 is a structural schematic view of a U-shaped groove of a fuselage provided by the utility model;

[0029] Figure 3 is a structural schematic view of the extension of a telescopic handle of the cable path identification signal receiver provided by the utility model;

[0030] Figure 4 is a structural schematic view of a U-shaped handle provided by the utility model;

[0031] Figure 5 is a principle block diagram of the cable path identification signal receiver provided by the utility model;

[0032] Figure 6 is a use diagram of the cable path identification signal receiver and the transmitter provided by the utility model;

[0033] Figure 7 is a use method diagram of the cable path identification signal receiver provided by the utility model;

[0034] Figure 8 is a use method diagram of the cable path identification signal receiver provided by the utility model;

[0035] Figure 9 is a display state diagram of a liquid crystal display provided by the utility model;

[0036] Figure 10 is a display state diagram of a liquid crystal display provided by the utility model;

[0037] Figure 11The utility model provides a kind of flexible coupling clamp and cable path identification signal receiver's use state diagram provided by the utility model;

[0038] Figure 12 The utility model provides a kind of A frame and cable path identification signal receiver's use state diagram

[0039] Reference signs: 1-shows control instrument;2-airframe;3-liquid crystal display;4-key;5-expansion interface;6-first slot;7-second slot;8-slideway;9-U handle;10-side rod;11-slideway;12-connecting rod;13-fastener;14-notch;15-Type_C USB port;16-flexible coupling clamp;17-A frame;18-transmitter. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0041] To make the purpose, technical scheme and advantages of the utility model more clear, the utility model embodiment will be further described in detail below with reference to the drawings.

[0042] It should be noted that, in the present embodiment, the orientation or position relationship indicated by "bottom", "top", "left", "right" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0043] It should also be noted that, in the present embodiment, unless otherwise explicitly specified and limited, the terms "set", "connected" should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected;It can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to specific circumstances.

[0044] Reference Figures 1-5The utility model provides a cable path identification signal receiver, including: display control instrument 1 and fuselage 2, display control instrument 1 is connected with the one end of fuselage 2 vertically, be provided with central processing unit in display control instrument 1, be provided with liquid crystal display 3, button 4 outside, and liquid crystal display 3 and button 4 are electrically connected with central processing unit, first horizontal antenna, second horizontal antenna, first vertical antenna, second vertical antenna and compass antenna are connected with different connection ports of fuselage 2, and the connection port is electrically connected with central processing unit, the end that fuselage 2 is connected with display control instrument 1 is connected with telescopic handle.

[0045] Need to explain, see Figure 5 , receiver is usually used with the existing transmitter (DD220 or Fluke1623 / 1625 Earth Ground Tester), and electromagnetic wave is generated by transmitter, and the sending signal is transmitted to the underground metal pipeline on the ground through different transmission connection modes, and the metal pipeline induces electromagnetic wave, and the induced current is generated on the cable surface, and the induced current is propagated along the metal cable to the far place, and electromagnetic wave is radiated to the ground through the cable in the propagation process of the current, so that the receiver can receive electromagnetic wave signal on the ground above the underground metal pipeline, and the position and direction of the underground cable can be judged by the signal strength variation received.

[0046] Secondly, the model of central processing unit can be Cortex-A53, button 4 includes " " and " ", when starting detection, the signal amplitude data is observed, and the dB value is adjusted through " " or " " key, to ensure that the data is between 500-900, and the subsequent dB value is basically unchanged, and the detection is sequentially detected in the case of the subsequent dB value being basically unchanged, see Figure 9 When the receiver approaches the pipeline, the liquid crystal display 3 can directly display the position of the pipeline under the receiver, and the or Arrow prompts to move right or left, when the receiver is just above the pipeline, then the left and right two arrows appear at the same time, accordingly, the pipeline can be quickly tracked.

[0047] See Figure 10 , press " " or " " key for 2s or so, switch to classic compass mode, when the receiver approaches the pipeline, the compass of the liquid crystal display 3 can directly show the direction of the pipeline under the receiver, and the Arrow points to the signal direction of the cable, when the tester faces the far end of the cable, no matter how the direction of the receiver changes, the arrow always points to the end of the cable, when the tester faces away from the far end of the cable, the arrow becomes And still points to the end of the cable, and the or The arrow prompts to move right or left; when the receiver is just above the pipeline, both right and left arrows appear, and thus the pipeline can be quickly tracked.

[0048] Furthermore, the key 4 also includes an "m" key, which sequentially cycles the three detection methods of wide-peak method, narrow-peak method and wave trough method, see Figure 7 , the use state diagram of the wide-peak method, the narrow-peak method and the wave trough method, the wide-peak method, the signal above the pipeline is the strongest, the advantage is high response sensitivity and large response range; the disadvantage is slow response curve change, which is not conducive to the distinction of parallel pipelines; the narrow-peak method is similar to the wide-peak method, the advantage is steeper response curve, which is conducive to the distinction of parallel pipelines, and the disadvantage is reduced sensitivity; the wave trough method, the signal above the pipeline is the weakest, the signals on both sides change rapidly, the advantage is conducive to accurate positioning of the target pipeline, and the disadvantage is susceptible to interference, which may cause false response under strong interference.

[0049] The key 4 also includes an on-off key, which is used for turning on and off; the key 4 also includes an "i" key, which is used to exit the setting interface; the key 4 also includes an "f" key, which is used to select the corresponding output frequency by the key "f".

[0050] In addition, see Figure 8 , when the wave trough method is used, find the point A where the signal on the pipeline is the weakest; then tilt the receiver by 45° and move to one side of the pipeline until another point B where the signal is the weakest is found; then restore the receiver from point A and tilt by 45° in the other direction and move to the other side of the pipeline to find another point C where the signal is the weakest. In general, the depth is equal to the straight-line distance L1 between A and B, and also equal to the straight-line distance L2 between A and C. The adjacent pipelines may cause the signal valley value to appear not directly above the pipeline, so it is believed that the depth equal to half of BC will be more accurate, that is, depth = (L1+L2) / 2.

[0051] It should be noted that the horizontal antenna refers to the antenna whose main axis direction is parallel to the ground. In cable detection, the horizontal antenna is mainly used to receive electromagnetic fields propagating parallel to the ground. When using a horizontal antenna for detection, it is easier to find the direction of the cable, because the magnetic field generated by the cable is strongest directly above it, and the horizontal antenna can effectively capture the signal strength changes in this direction, thus helping the operator to determine the direction of the cable. The vertical antenna refers to the antenna whose main axis direction is perpendicular to the ground. In cable detection, the vertical antenna is mainly used to receive electromagnetic fields propagating perpendicular to the ground. The vertical antenna is particularly useful for determining the exact position of the cable, because when the receiver is directly above the cable, the signal strength received by the vertical antenna will reach a maximum value. Therefore, by moving the receiver and observing the changes in signal strength, the exact position of the cable can be accurately located. In actual operation, the horizontal antenna and the vertical antenna are often used in combination to achieve the best detection effect. First, the horizontal antenna can be used to roughly determine the path of the cable. Then, switch to the vertical antenna and move the receiver along this path until the strongest signal point is found, which is the exact position of the cable. The compass antenna, also known as a magnetometer or electronic compass antenna, is mainly used to detect the direction of the Earth's magnetic field. This antenna plays a key role in cable detection receivers, helping operators to determine direction and orientation, thus more accurately locating underground cables or other targets.

[0052] The cable path identification signal receiver is provided with two horizontal antennas and two vertical antennas, namely a first horizontal antenna, a second horizontal antenna, a first vertical antenna, and a second vertical antenna. The two antennas can receive signals respectively. By comparing the signal strengths received by the two antennas, the weak signal can be more accurately identified, and the overall sensitivity can be improved. By comparing the signals received by the two antennas, background noise can be better identified and filtered out, thus improving the signal-to-noise ratio.

[0053] It should be noted that when detecting by the method in Figure 7 and Figure 8 , the bottom of the body 2 contacts the ground, and the tester moves and detects by holding the telescopic handle. Since different testers have different heights, the tester can adjust the height by telescoping the telescopic handle to adapt to the tester's height, so that the tester does not need to bend down for a long time to hold the receiver for work, reducing the labor intensity of the workers.

[0054] Further, the cable path identification signal receiver further comprises a mixer / filter / amplifier, an A / D converter, the A / D converter is electrically connected with the mixer / filter / amplifier and the central processing unit, the first horizontal antenna, the second horizontal antenna, the first vertical antenna, the second vertical antenna and the compass antenna are electrically connected with the mixer / filter / amplifier through different connection ports; the model of the first horizontal antenna and the second horizontal antenna can be RD8000 series antenna, the model of the first vertical antenna and the second vertical antenna can be vLoc3-Pro series antenna, and the model of the compass antenna can be HMC5883L; the mixer can be TRF3703, which is used to convert the high-frequency signal collected by the antenna into an intermediate frequency signal with a lower frequency, facilitating subsequent processing and amplification; the filter can be INA849, which only allows signals within a specific frequency range to pass through, thereby removing interference of other frequencies; and the model of the amplifier can be LMH6629, which is used to amplify the intermediate frequency signal to a high enough level for further processing and analysis.

[0055] Secondly, different cables can use different frequencies for marking or transmitting signals, and selecting a suitable frequency channel can more accurately detect the target cable. Common detection frequencies include low frequencies (such as 577Hz, 8kHz), medium frequencies (such as 33kHz) and high frequencies (such as 133kHz), etc. Therefore, the receiver has multiple independent signal processing channels inside, each of which can independently process data of different frequencies or types, and the user can select the most suitable channel according to different detection targets and environments.

[0056] In addition, the model of the A / D converter can be ADS1256A / D. When the A / D converter is used in cooperation with the mixer, filter and amplifier, the received high-frequency signal is converted into an intermediate frequency signal in the mixing stage. The A / D converter converts these intermediate frequency signals into digital signals for further digital filtering and processing. The filter can more accurately remove unwanted frequency components to improve the purity of the signal, and the amplifier is preferably used for amplification without introducing additional noise.

[0057] Further, the fuselage 2 is also provided with an expansion interface 5, which is electrically connected with the central processing unit, and the expansion interface 5 is used to connect the flexible coupling clamp or A-shaped bracket.

[0058] It should be noted that in cable identification, the coupling method is preferred for running cables, and the plug of the flexible coupling clamp 16 is inserted into the expansion interface 5 of the receiver, as shown in Figure 11 The main function of connecting the receiver with the flexible coupling clamp is to couple the signal to the target cable for positioning and tracking, and to send the identification signal to the central controller. The model of the flexible coupling clamp can be vLoc3-Pro FlexiTrace.

[0059] In addition, the A-frame model can be RD7000A-Frame, which is connected with the A-frame 17 through the extension interface 5 when the step voltage is needed to be fixed, see Figure 12 The test signal sent by the transmitter generates a leakage magnetic field around the fault point, that is, the step voltage, and the potential change along the pipeline path is measured by the receiver through the A-frame: when close to the fault point, the potential difference will rapidly increase, the signal strength of the corresponding receiver increases, and the potential difference reaches the maximum value when the two electrodes are located above the fault point and the distance from the front and back of the fault point is equal; the receiver signal is the smallest; when the two electrodes pass through the fault point, the measured potential gradually decreases and the polarity is opposite.

[0060] Further, the display control instrument 1 is provided with a lithium battery pack, which is electrically connected with the central processor to supply power to each component; in addition, the display control instrument 1 is also provided with a Type_C USB port 15, when charging is needed, the plug of the charger is connected with the Type_C USB interface, and the AC plug of the charger is connected with the AC 220V / 110V socket.

[0061] Further, it also includes a loudspeaker, which is electrically connected with the central processor, and the loudspeaker is mainly used to provide audio output to help the operator locate the position of the underground cable. When the receiver approaches the target cable, it will receive the electromagnetic signal emitted from the cable, and as the distance changes, the signal strength will also change. By converting this change into an audible sound signal, the operator can determine the distance from the target object according to the volume of the sound.

[0062] Further, the telescopic handle includes two first grooves 6 opened in the opposite side walls of the body 2, a second groove 7 opened in the end of the body 2, the first grooves 6 and the second groove 7 are communicated to form a U-shaped groove, sliding grooves 8 are opened in the opposite side walls of the first grooves 6, sliding blocks 11 are connected with the opposite side walls of the two side rods 10 of the U-shaped handle 9, the sliding blocks 11 are slidingly connected in the sliding grooves 8, the two side rods 10 of the U-shaped handle 9 are slidingly connected in the two first grooves 6 respectively, in the retracted state, the connecting rod 12 between the two side rods 10 of the U-shaped handle 9 is located in the second groove 7, a threaded hole is opened through one of the side rods 10 of the U-shaped handle 9, a fastener 13 is threadedly connected in the threaded hole, and the fastener 13 is a screw rod.

[0063] When detecting by using the cable path identification signal receiver through the above method, the bottom of the body 2 contacts the ground, and the detector adjusts according to his own height, first loosens the fastener 13, pulls the U-shaped handle 9 upward, tightens the fastener 13 after adjusting to the appropriate position, and the detector detects by holding the U-shaped handle 9, and the detector with high height does not need to bend down to detect.

[0064] Further, the two side walls of the second groove body 7 are each provided with a notch 14, which can accommodate a finger and facilitate the detection personnel to pull out the U-shaped handle 9.

[0065] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A cable path identification signal receiver, characterized by Include: Display control instrument (1) and fuselage (2); The display control instrument (1) is connected vertically with one end of the fuselage (2); The display control instrument (1) is internally provided with a central processing unit, externally provided with a liquid crystal display (3), a button (4), and the liquid crystal display (3) and the button (4) are electrically connected with the central processing unit; The first horizontal antenna, the second horizontal antenna, the first vertical antenna, the second vertical antenna and the compass antenna are connected with different connection ports of the fuselage (2), and the connection ports are electrically connected with the central processing unit; The end of the fuselage (2) connected with the display control instrument (1) is connected with a telescopic handle.

2. The cable path identification signal receiver according to claim 1, characterized in that, Also include mixer / filter / amplifier, located in the fuselage (2), and electrically connected with the central processing unit; The first horizontal antenna, the second horizontal antenna, the first vertical antenna, the second vertical antenna and the compass antenna are connected with different connection ports with the mixer / filter / amplifier.

3. The cable path identification signal receiver of claim 2, wherein, Also include: A / D converter; The A / D converter is electrically connected with the mixer / filter / amplifier and the central processing unit.

4. The cable path identification signal receiver of claim 1, wherein, Also include: Expansion interface (5) is arranged on the fuselage (2), which is electrically connected with the central processing unit; The expansion interface (5) is used for connecting flexible coupling clamp or A frame.

5. The cable path identification signal receiver of claim 1, wherein, Also include: Speaker, electrically connected with the central processing unit.

6. The cable path identification signal receiver of claim 1, wherein, The telescopic handle includes: Two first slot bodies (6) are arranged on the opposite two side walls of the fuselage (2); Second slot body (7) is arranged on the end of the fuselage (2), the first slot body (6) and the second slot body (7) are communicated, and together constitute a U-shaped slot; The sliding groove (8) is arranged on the opposite two side walls of the first slot body (6); U-shaped handle (9), the opposite two side walls of the two side rods (10) of the U-shaped handle (9) are connected with the sliding block (11), the sliding block (11) is slidingly connected in the sliding groove (8), the two side rods (10) of the U-shaped handle (9) are located in the two first slot bodies (6) respectively, and the connecting rod (12) between the two side rods (10) of the U-shaped handle (9) is located in the second slot body (7); Fastener (13), threaded connection in one of the side rods (10) of the U-shaped handle (9).

7. The cable path identification signal receiver of claim 6, wherein, The top of the two side walls of the second slot body (7) is provided with a notch (14).

8. A cable path identification signal receiver according to any one of claims 1-7, characterized in that, Also include: Lithium battery pack, arranged in the display control instrument (1), electrically connected with the central processing unit.

9. The cable path identification signal receiver of claim 8, wherein, The display control instrument (1) is also provided with a Type_C USB port (15), which is electrically connected with the lithium battery pack.

10. The cable path identification signal receiver of claim 1, wherein, Also include speaker, electrically connected with the central processing unit.

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