CN115356520A - Cable operation condition judgment device - Google Patents
Cable operation condition judgment device Download PDFInfo
- Publication number
- CN115356520A CN115356520A CN202210812218.1A CN202210812218A CN115356520A CN 115356520 A CN115356520 A CN 115356520A CN 202210812218 A CN202210812218 A CN 202210812218A CN 115356520 A CN115356520 A CN 115356520A
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- Prior art keywords
- cable
- current
- operation condition
- annular clamping
- clamping plates
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/145—Indicating the presence of current or voltage
- G01R19/15—Indicating the presence of current
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/145—Indicating the presence of current or voltage
- G01R19/155—Indicating the presence of voltage
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/58—Testing of lines, cables or conductors
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
The invention discloses a cable operation condition judgment device which comprises a touch display screen, an MCU (microprogrammed control unit), a battery and a detection probe for penetrating and sleeving a cable; the detection probe comprises two semicircular annular clamping plates which are connected into an annular clamping plate, one ends of the two semicircular annular clamping plates are movably connected, and the other ends of the two semicircular annular clamping plates are in contact connection; a pincer-shaped current sensor is arranged on a circular ring of the circular ring-shaped clamping plate, and an induction electric field sensor and an electromagnetic wave receiver are uniformly arranged on the inner side of the circular ring; the pincerlike current sensor, the induction electric field sensor and the electromagnetic wave receiver are respectively connected with the MCU, and transmit the measured cable data to the MCU; and the MCU processes the cable data to judge the operation condition of the cable, and transmits the judgment result to the touch display screen for displaying. The invention adopts three induction type measuring modes, and can judge three operating working conditions of voltage and current, voltage and current and voltage and current of the cable.
Description
Technical Field
The invention relates to the technical field of power testing equipment, in particular to a cable operation condition judgment device.
Background
The number of loops of the power cable in the cable channel is large, the operation condition of the cable needs to be checked frequently during overhauling and maintenance, and whether the cable is electrified or not is judged. In actual field work, because the cable outer protective sleeve is generally provided with the metal shielding layer, and the cable can be in a voltage and current free state, whether the cable is electrified or not can not be judged by a conventional instrument such as a clamp meter. And voltage measuring instruments such as an electroscope and a voltmeter need to be electrically connected to measure the voltage, so that the operation is inconvenient. If the sensitivity of the clamp meter is not high enough, the detection is inaccurate under the condition that the cable is provided with the shielding layer, and whether the cable is electrified or not can not be judged in the presence of voltage or current, so that the detection result is not accurate enough.
Disclosure of Invention
The invention aims to provide a cable operation condition judgment device which can solve the problems that the detection of the cable operation condition is inconvenient and inaccurate in the prior art.
The purpose of the invention is realized by the following technical scheme:
the invention provides a cable operation condition judgment device, which comprises a touch display screen, an MCU (microprogrammed control unit), a battery and a detection probe for penetrating and sleeving a cable; the detection probe comprises two semicircular annular clamping plates which are connected into an annular clamping plate, one ends of the two semicircular annular clamping plates are movably connected, and the other ends of the two semicircular annular clamping plates are in contact connection; a pincer-shaped current sensor is arranged on a circular ring of the circular ring-shaped clamping plate, and an induction electric field sensor and an electromagnetic wave receiver are uniformly arranged on the inner side of the circular ring;
the pincerlike current sensor, the induction electric field sensor and the electromagnetic wave receiver are respectively connected with the MCU, and transmit the measured cable data to the MCU; the MCU processes the cable data to judge the operation condition of the cable, and transmits the judgment result to the touch display screen for displaying; the battery is used for supplying power to the device body.
Further, the cable data includes current data, electric field data, and electromagnetic wave data.
Further, the operation condition of the cable includes:
the working condition I is as follows: voltage and current;
working conditions are as follows: with voltage and without current;
working conditions are as follows: no voltage and no current.
Further, the detection probe also comprises an operating handle; the operating handle is movably connected with the two semicircular clamping plates respectively and comprises a push-pull structure and a handheld structure; the push-pull structure is connected to the top of the handheld structure; the handheld structure is movably connected with the two semicircular annular clamping plates respectively;
the push-pull structure comprises two first connecting pieces, two second connecting pieces and a telescopic structure; the fixed end of the telescopic structure is installed on the handheld structure, the movable end of the telescopic structure is hinged to one ends of the two second connecting pieces respectively, the other ends of the two second connecting pieces are hinged to one ends of the two first connecting pieces respectively, and the other ends of the two first connecting pieces are fixedly connected to the outer walls of the two semicircular annular clamping plates respectively.
Furthermore, the semicircular clamping plate is made of metal.
Furthermore, the installation positions of the induction electric field sensor and the electromagnetic wave receiver are arranged at intervals; the induction electric field sensors are uniformly distributed and installed on the inner side of the circular ring-shaped clamping plate; the electromagnetic wave receivers are uniformly arranged on the inner side of the ring-shaped clamping plate.
The invention has the beneficial effects that:
the invention adopts three induction type measuring modes, and can judge three operating working conditions of voltage and current, voltage and current and voltage and current of the cable.
The sensor adopts the design of annular uniform distribution, and the outer layer of the annular structure adopts metal shielding, so that the interference of external signals on measurement can be effectively prevented.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram illustrating the connection of a cable operation condition determining device;
fig. 2 is a schematic structural diagram of a detection probe.
The reference numbers are as follows:
the device comprises a 1-induction electric field sensor, a 2-pincerlike current sensor, a 3-electromagnetic wave receiver, a 4-operating handle, a 5-semicircular annular splint, a 41-handheld structure, a 42-push-pull structure, a 421-first connecting piece, a 422-second connecting piece, a 423-movable end of a telescopic structure and a 424-fixed end of the telescopic structure.
Detailed Description
The embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.
The embodiments of the present disclosure are described below with specific examples, and other advantages and effects of the present disclosure will be readily apparent to those skilled in the art from the disclosure in the specification. It is to be understood that the described embodiments are merely illustrative of some, and not restrictive, of the embodiments of the disclosure. The disclosure may be embodied or carried out in various other specific embodiments, and various modifications and changes may be made in the details within the description without departing from the spirit of the disclosure. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without inventive step, are intended to be within the scope of the present disclosure.
The embodiment of the invention provides a cable operation condition judgment device, which comprises a touch display screen, an MCU, a battery and a detection probe for penetrating and sleeving a cable; the detection probe comprises two semicircular annular clamping plates which are connected into an annular clamping plate, one ends of the two semicircular annular clamping plates are movably connected, and the other ends of the two semicircular annular clamping plates are in contact connection; the clamp-on current sensor is installed on the ring of the ring-shaped clamping plate, and the induction electric field sensors and the electromagnetic wave receivers are evenly installed on the inner side of the ring.
The connection principle of the movable connection ends of the two semicircular annular clamping plates is the movable connection of the clamp structure, and the two semicircular annular clamping plates are influenced by mutual tension under the action of no additional external force, so that the contact connection ends of the two semicircular annular clamping plates are kept in contact connection.
The pincerlike current sensor, the induction electric field sensor and the electromagnetic wave receiver are respectively connected with the MCU, and transmit the measured cable data to the MCU; the MCU processes the cable data to judge the operation condition of the cable, and transmits the judgment result to the touch display screen for displaying; the battery is used for supplying power to the device body.
In the concrete implementation, open the detecting probe, utilize two half ring type splint to connect the ring nestification of synthetic ring type splint in the cable:
1. the working principle of the pincer-shaped current sensor is as follows: the clamp-on current sensor can generate an alternating magnetic field by using alternating current flowing in the cable, a cable shielding layer can not completely shield a magnetic field signal, the magnetic field intensity can be measured by using a Hall principle at the moment, the current in the cable is indirectly measured, and the voltage and the current in the cable can be judged by the mode.
2. The working principle of the electromagnetic wave receiver is as follows: the electromagnetic wave receiver can generate low-frequency electromagnetic waves by utilizing alternating current in the cable, and even if the cable is in no-load or low-load state, the parasitic capacitance and parasitic inductance can be generated on the cable circuit, so that the zero current of the cable can not be realized in a power-on state, and a small amount of electromagnetic waves can be radiated under the condition of no load. The receiving antenna is used for receiving electromagnetic wave signals and measuring the intensity of the electromagnetic waves, so that whether voltage exists in the cable can be judged, and the quality of the cable shielding layer can absorb the electromagnetic waves of different degrees due to the fact that the electromagnetic waves are easily influenced by the wires. Therefore, this method is mainly used for measuring the presence or absence of voltage, and is not used for measuring the presence or absence of current.
3. The working principle of the induction electric field sensor is as follows: any object with inconsistent potential can generate electromagnetism, an operator holds the judging device by hand and stands on the ground, the potential of the judging device is considered as 0 potential, 220V or 380V alternating voltage exists in the cable, and an electric field is formed between the electric field and the judging device. The parallel capacitor perpendicular to the electric field is placed in the electric field, a voltage is generated between two polar plates of the capacitor due to the electric field, the strength of the electric field can be indirectly measured by measuring the voltage, whether the voltage exists in the cable or not can be judged by the mode, and the mode is mainly used for judging the voltage of the cable and cannot judge the current condition of the cable.
Specifically, the cable data includes current data, electric field data, and electromagnetic wave data. The current data is obtained from the acquisition and measurement of the pincerlike current sensor; the electric field data is from the acquisition and measurement of an induction electric field sensor; the electromagnetic wave data is derived from the collected measurements of the electromagnetic wave receiver.
Specifically, the operation condition of the cable includes:
the working condition I is as follows: voltage and current;
working conditions are as follows: with voltage and without current;
working conditions are as follows: no voltage and no current.
In specific implementation, the acquired data are transmitted to the MCU for processing by measuring the running state of the cable, and the MCU utilizes the acquired data for comprehensive judgment to obtain a judgment result comprising the three working conditions.
Specifically, the detection probe further comprises an operating handle; the operating handle is movably connected with the two semicircular clamping plates respectively and comprises a push-pull structure and a handheld structure; the push-pull structure is connected to the top of the handheld structure; the handheld structure is movably connected with the two semicircular annular clamping plates respectively;
the push-pull structure comprises two first connecting pieces, two second connecting pieces and a telescopic structure; the fixed end of the telescopic structure is installed on the handheld structure, the movable end of the telescopic structure is hinged to one ends of the two second connecting pieces respectively, the other ends of the two second connecting pieces are hinged to one ends of the two first connecting pieces respectively, and the other ends of the two first connecting pieces are fixedly connected to the outer walls of the two semicircular annular clamping plates respectively.
In the concrete implementation, the expansion end with extending structure is manual to the stiff end shrink, pulling second connecting piece and first connecting piece for two semi-ring type splint are under swing joint's pulling, and the contact link disconnection contact presents the opening, then moves the opening to the cable, and the expansion end of pulling extending structure this moment makes the contact link opening of two semi-ring type splint slowly diminish, and until disappearance becomes contact state, judges that the device can normally work this moment. After the work is completed, the above operation may be repeated, and the judgment device may be taken out.
Preferably, the semicircular annular clamping plate is made of metal. Adopt the shielding of metal material, can effectively prevent external signal to the interference of measurement.
Preferably, the installation positions of the induction electric field sensor and the electromagnetic wave receiver are arranged at intervals; the induction electric field sensors are uniformly arranged on the inner side of the ring-shaped clamping plate; the electromagnetic wave receivers are uniformly arranged on the inner side of the ring-shaped clamping plate.
In the description of the present invention, it is to be understood that the terms "intermediate", "length", "upper", "lower", "front", "rear", "vertical", "horizontal", "inner", "outer", "radial", "circumferential", and the like are used in an orientation or positional relationship indicated on the basis of the orientation or positional relationship shown in the drawings, which is for convenience of description and simplicity of description only, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore, are not to be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the first feature may be "on" the second feature in direct contact with the second feature, or the first and second features may be in indirect contact via an intermediate. "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being permanently connected, detachably connected, or integral; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
The above description is for the purpose of illustrating embodiments of the invention and is not intended to limit the invention, and it will be apparent to those skilled in the art that any modification, equivalent replacement, or improvement made without departing from the spirit and principle of the invention shall fall within the protection scope of the invention.
Claims (5)
1. A cable operation condition judgment device is characterized by comprising a touch display screen, an MCU, a battery and a detection probe for penetrating and sleeving a cable; the detection probe comprises two semicircular annular clamping plates which are connected into an annular clamping plate, one ends of the two semicircular annular clamping plates are movably connected, and the other ends of the two semicircular annular clamping plates are in contact connection; a pincer-shaped current sensor is arranged on a circular ring of the circular ring-shaped clamping plate, and an induction electric field sensor and an electromagnetic wave receiver are uniformly arranged on the inner side of the circular ring;
the pincerlike current sensor, the induction electric field sensor and the electromagnetic wave receiver are respectively connected with the MCU, and transmit the measured cable data to the MCU; the MCU processes the cable data to judge the operation condition of the cable, and transmits the judgment result to the touch display screen for displaying; the battery is used for supplying power to the device body.
2. The cable operation condition judgment device according to claim 1, wherein the cable data includes current data, electric field data, and electromagnetic wave data.
3. The cable operation condition judgment device according to claim 1, wherein the operation condition of the cable includes:
the working condition I is as follows: voltage and current exist;
working conditions are as follows: with voltage and no current;
and a third working condition: no voltage and no current.
4. The cable operation condition judgment device according to claim 1, wherein the detection probe further comprises an operation handle; the operating handle is movably connected with the two semicircular clamping plates respectively and comprises a push-pull structure and a handheld structure; the push-pull structure is connected to the top of the handheld structure; the handheld structure is movably connected with the two semicircular annular clamping plates respectively;
the push-pull structure comprises two first connecting pieces, two second connecting pieces and a telescopic structure; the fixed end of the telescopic structure is installed on the handheld structure, the movable end of the telescopic structure is hinged to one end of each of the two second connecting pieces, the other ends of the two second connecting pieces are hinged to one ends of the two first connecting pieces respectively, and the other ends of the two first connecting pieces are fixedly connected to the outer walls of the two semicircular annular clamping plates respectively.
5. The cable operation condition judgment device according to claim 4, wherein the semi-circular ring type clamp plate is made of a metal material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210812218.1A CN115356520A (en) | 2022-07-11 | 2022-07-11 | Cable operation condition judgment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210812218.1A CN115356520A (en) | 2022-07-11 | 2022-07-11 | Cable operation condition judgment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115356520A true CN115356520A (en) | 2022-11-18 |
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ID=84032204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210812218.1A Pending CN115356520A (en) | 2022-07-11 | 2022-07-11 | Cable operation condition judgment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115356520A (en) |
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2022
- 2022-07-11 CN CN202210812218.1A patent/CN115356520A/en active Pending
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