CN113341281A - Multifunctional cable detector - Google Patents
Multifunctional cable detector Download PDFInfo
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- CN113341281A CN113341281A CN202110521833.2A CN202110521833A CN113341281A CN 113341281 A CN113341281 A CN 113341281A CN 202110521833 A CN202110521833 A CN 202110521833A CN 113341281 A CN113341281 A CN 113341281A
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- 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
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
- G01R31/1272—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of cable, line or wire insulation, e.g. using partial discharge measurements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
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- 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
- G01R31/54—Testing for continuity
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- 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
Abstract
The invention discloses a multifunctional cable detector, which solves the problem that the time consumed for checking the conductivity and the insulativity of a tooling cable is too long in the production process. The invention adopts a universal design and has the functions of cable tester self-checking, tool conduction detection, insulation detection, tool cable internal resistance detection and the like. The cable detector can simplify the operation steps of cable detection of the tooling, reduce the labor intensity of detection personnel, shorten the detection period, improve the safety of the personnel in the using process and improve the production efficiency and the quality stability of products.
Description
Technical Field
The invention relates to the technical field of cable detection, in particular to a multifunctional cable detector.
Background
The tooling cable is a link for connecting a tested product and the test equipment, and the quality of the tooling cable directly influences the quality of the product. At present, a plurality of sets of tooling cables are required to be detected for multiple times in each batch of production. At present, a universal meter and an insulating meter are used for detection, and two persons are matched to carry out on-off and insulating detection point by point, so that the testing of the multi-core cable is slow in speed, high in strength, monotonous, repeated and extremely easy to cause fatigue, the working efficiency is extremely low, particularly, in the aspect of testing short circuit, the testing is complex as more core wires are used, human errors are easy to occur, the missing inspection is serious, and the testing quality is difficult to guarantee. As production increases year by year, tooling cable inspection presents a significant challenge.
Disclosure of Invention
The invention aims to provide a multifunctional cable detector which solves the problem that the time consumed for checking the conductivity and the insulativity of a tooling cable is too long in the production process.
According to a technical scheme of the invention, a multifunctional cable detector is provided, which comprises: the box body is provided with a power supply wiring port and input and output wiring ports; the insulation meter is fixed in the box body; the input end and the output end of the self-checking circuit are arranged at the wiring port; the switching conduction test circuit is provided with an input end and an output end at a wire port; the input end of the insulation test circuit is respectively connected with the positive electrode and the negative electrode of the insulation meter, and the output end of the insulation test circuit is arranged at the wire connector; the input end of the core wire resistance value test circuit is respectively connected with the positive electrode and the negative electrode of the insulation meter, and the output end of the core wire resistance value test circuit is arranged at the wire connector; the wiring port comprises a first wiring port and a second wiring port, the first wiring port and the second wiring port respectively correspond to the positive pole and the negative pole of the circuit, and the switching conduction test circuit and the core wire resistance test circuit share the output end.
Furthermore, the first interface is provided with a plurality of groups of first cable wiring terminals, each group of first cable wiring terminals comprises a plurality of first wiring ends, one first wiring end corresponds to the core wire of one cable, the second wiring port is provided with a plurality of groups of second cable wiring terminals, each group of second cable wiring terminals comprises a plurality of second wiring ends, and one second wiring end corresponds to the core wire of one cable.
Furthermore, the self-checking circuit comprises a self-checking main circuit, a plurality of self-checking branch circuits and a plurality of LED indicating lamps, wherein the first ends of the respective checking branch circuits are connected with the self-checking branch circuits in parallel, the second ends of the respective checking branch circuits are connected with the wiring terminals, and the plurality of LED indicating lamps are arranged on the plurality of self-checking branch circuits in a one-to-one correspondence manner.
Furthermore, the self-checking circuit also comprises a self-checking circuit switch, the self-checking circuit switch is arranged on the self-checking main circuit, and the self-checking circuit switch penetrates through the shell and is fixed on the shell through a nut.
Furthermore, the switching conduction test circuit comprises a conduction anode main circuit, a conduction cathode main circuit, a first conduction branch circuit and a second conduction branch circuit, wherein the first end of the anode branch of the first conduction branch circuit is connected with the conduction anode main circuit, the second end of the anode branch of the first conduction branch circuit is connected with the wiring terminal, the first end of the cathode branch of the first conduction branch circuit is connected with the conduction cathode branch circuit, and the second end of the cathode branch of the first conduction branch circuit is connected with the wiring terminal; the second switches on the branch road and includes two positive pole branches and a negative pole branch, and the first end of two positive pole branches all links to each other with anodal main road, and the second end of two positive pole branches is linked together and links to each other with binding post, and the second switches on the first end of the negative pole branch of branch road and switches on the negative pole main road and be linked together, and the second switches on the second of the negative pole branch of branch road and links to each other with binding post.
Furthermore, the switching conduction test circuit also comprises a third conduction branch and a fourth conduction branch, the third conduction branch comprises an anode branch and two cathode branches, the first end of the anode branch of the third conduction branch is connected with the anode main circuit, the second end of the anode branch of the third conduction branch is connected with the connecting terminal, the first ends of the two cathode branches of the third conduction branch are communicated with the conduction cathode main circuit, the second ends of the two cathode branches of the third conduction branch are communicated with the connecting terminal, the fourth conduction branch comprises two anode branches and two cathode branches, the first ends of the two anode branches of the fourth conduction branch are connected with the anode main circuit, the second ends of the two anode branches of the fourth conduction branch are communicated with the connecting terminal, the first ends of the two cathode branches of the fourth conduction branch are communicated with the conduction cathode main circuit, the second ends of the two negative pole branches of the fourth conducting branch are communicated and connected with the wiring terminal.
Further, the first conducting circuit comprises a plurality and/or the second conducting circuit comprises a plurality and/or the third conducting circuit comprises a plurality and/or the fourth conducting circuit comprises a plurality.
Furthermore, the core wire resistance test circuit comprises a plurality of one-to-two switches, a first connecting circuit and a second connecting circuit, the anode of the insulation meter is connected with the first connecting circuit, the cathode of the insulation meter is connected with the second connecting circuit, one contact of each one-to-two switch is connected with the first connecting circuit, the other contact of each one-to-two switch is connected with the second connecting circuit, one-to-two switch corresponds to four connecting wires, and each connecting wire is connected with the wiring terminal.
Furthermore, the insulation test circuit comprises an insulation test anode connected with the anode of the insulation meter, an insulation test cathode connected with the cathode of the insulation meter, a plurality of one-to-two switches and a plurality of branches, the branches are paired branches corresponding to the switches, the anode branch of each branch is connected with the anode of the insulation meter, the cathode branch of each branch is connected with the cathode of the insulation meter, a cable is correspondingly connected with the one-to-two switches, the one-to-two switches are pulled to one side to be connected with the anode of the insulation meter, and the one-to-two switches are pulled to the other side to be connected with the cathode of the insulation meter.
Further, a plurality of one-to-two switches are all arranged on the shell.
The invention has the beneficial effects that:
by adopting the technical scheme of the invention, the detection operation steps of the tooling cable can be simplified, the labor intensity of detection personnel is reduced, the detection period is shortened, the safety of the personnel in the using process is improved, and the production efficiency and the quality stability of products are improved.
Drawings
FIG. 1 shows a schematic view of aMultifunctional cable detector structureSchematic representation.
FIG. 2Cable detector conduction self-checking schematic diagramSchematic representation.
FIG. 3Cable detector testingPrinciple diagram of cable conductionSchematic representation.
FIG. 4Measuring schematic diagram of internal resistance of tooling cableSchematic representation.
FIG. 5Insulation test schematic diagram of cable detectorSchematic representation.
FIG. 6Self-checking and conducting internal wiring diagram of cable detector。
FIG. 7Resistance measurement internal wiring diagram of cable detector。
FIG. 8Cable insulation test internal wiring diagram of cable detector。
1.Insulation test lead-out wire 2.Conducting outgoing line for test cable and switching cable 3.Testing cable lead-out wire (navigation) Hollow plug end) 4.Adapting cable lead-out wire 5. Power supply lead-out wire 6. Resistance measurement MTS-203 dial switch LED finger Indicating lamp 8.Insulation test MTS-203 dial switch 9.Ohm gear testing end of insulation meter 10.Insulation shift measurement of insulation meter Test terminal 11.Power switch of LED indicating lamp 12.Cable detector box body
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art, in the drawings, the thicknesses of layers and regions are exaggerated for clarity, and the same devices are denoted by the same reference numerals, and thus the description thereof will be omitted.
As shown in fig. 1 to 8, the multifunctional cable tester of the present embodiment includes: the testing device comprises a box body, an insulation meter, a self-checking circuit, a switching conduction testing circuit, an insulation testing circuit and a core wire resistance testing circuit, wherein the self-checking circuit and the conduction testing circuit share one set of circuit, so that the circuit is simplified, and related hardware is saved; the insulation test circuit is an independent circuit and is not related to other circuits, so that the influence of high voltage on other circuits when the external insulation is not good for insulation test is avoided; the core wire resistance measuring circuit borrows part of the conduction testing circuit, so that the core wire impedance measurement and the conduction measurement need to be measured independently, and the core wire impedance measurement and the conduction measurement need to be measured when the core wire impedance measurement and the conduction measurement are unavailable. The box body is provided with a power supply wiring port and an output wiring port. The insulation meter is fixed in the box body. The input end and the output end of the self-checking circuit are arranged at the wiring port. The input end and the output end of the switching conduction test circuit are arranged at the wiring port. The input end of the insulation test circuit is respectively connected with the anode and the cathode of the insulation meter, and the output end of the insulation test circuit is arranged at the wire connector. The input end of the core wire resistance value test circuit is respectively connected with the anode and the cathode of the insulation meter, and the output end of the core wire resistance value test circuit is arranged at the wire connector. The wiring port comprises a first wiring port and a second wiring port, the first wiring port and the second wiring port respectively correspond to the positive pole and the negative pole of the circuit, and the switching conduction test circuit and the core wire resistance test circuit share the output end.
By adopting the technical scheme of the embodiment, the detection operation steps of the tooling cable can be simplified, the labor intensity of detection personnel is reduced, the detection period is shortened, the safety of the personnel in the using process is improved, and the production efficiency and the quality stability of products are improved.
In the technical scheme of this embodiment, first interface is provided with the first cable connecting terminal of multiunit, and each first cable connecting terminal of group includes a plurality of first wiring ends, and a first wiring end corresponds the heart yearn of a cable, and the second wiring mouth is provided with multiunit second cable connecting terminal, and each second cable connecting terminal of group includes a plurality of second wiring ends, and a second wiring end corresponds the heart yearn of a cable. It should be noted that the number of the first terminals of the first connection terminal corresponds to the number of the second terminals of the second connection terminal. According to the characteristics of the aerospace circuit: each cable has a plurality of core wires and has high requirements on safety, and the structure is not easy to have detection errors or repeated detection phenomena.
In the technical scheme of this embodiment, the self-checking circuit includes the self-checking main road, a plurality of self-checking branch roads and a plurality of LED pilot lamps, examines the parallelly connected setting of first end and self-checking branch road of branch road respectively, examines the second end of branch road respectively and links to each other with binding post, and a plurality of LED pilot lamps one-to-one set up on a plurality of self-checking branch roads. It should be noted that a switch is arranged on the main self-test path, and the switch is arranged on the shell. The structure is compact, the detection is convenient, the detection can be completed only by a circuit plugging mode during the detection, and the structure is quick, safe and efficient.
In the technical scheme of this embodiment, the self-checking circuit still includes self-checking circuit switch, and self-checking circuit switch sets up on the self-checking main road, and self-checking circuit switch passes the casing and passes through the nut to be fixed on the casing. The structure is convenient to disassemble and assemble.
In the technical scheme of this embodiment, the switching conduction test circuit includes a conduction anode main circuit, a conduction cathode main circuit, a first conduction branch circuit and a second conduction branch circuit, a first end of an anode branch of the first conduction branch circuit is connected with the conduction anode main circuit, a second end of the anode branch of the first conduction branch circuit is connected with the connection terminal, a first end of a cathode branch of the first conduction branch circuit is connected with the conduction cathode branch circuit, and a second end of the cathode branch of the first conduction branch circuit is connected with the connection terminal; the second switches on the branch road and includes two positive pole branches and a negative pole branch, and the first end of two positive pole branches all links to each other with anodal main road, and the second end of two positive pole branches is linked together and links to each other with binding post, and the second switches on the first end of the negative pole branch of branch road and switches on the negative pole main road and be linked together, and the second switches on the second of the negative pole branch of branch road and links to each other with binding post. It should be noted that the second ends of the two positive branches are connected to each other through a two-in-one switch, i.e. one switch is connected to two wires, see the switch structure of fig. 5 in particular. The above structure can realize detection between any different plural core wires of the cable.
In the technical solution of this embodiment, the switching conduction test circuit further includes a third conduction branch and a fourth conduction branch, the third conduction branch includes a positive pole branch and two negative pole branches, a first end of the positive pole branch of the third conduction branch is connected to the positive pole main circuit, a second end of the positive pole branch of the third conduction branch is connected to the connection terminal, first ends of the two negative pole branches of the third conduction branch are connected to the conduction negative pole main circuit, second ends of the two negative pole branches of the third conduction branch are connected to the connection terminal, the fourth conduction branch includes two positive pole branches and two negative pole branches, first ends of the two positive pole branches of the fourth conduction branch are connected to the positive pole main circuit, second ends of the two positive pole branches of the fourth conduction branch are connected to the connection terminal, first ends of the two negative pole branches of the fourth conduction branch are connected to the conduction negative pole main circuit, the second ends of the two negative pole branches of the fourth conducting branch are communicated and connected with the wiring terminal. It should be noted that two negative electrode branches and one terminal of the third conducting branch are controlled by a one-to-two switch. The above configuration further expands the core wire detection method.
In the technical solution of this embodiment, the first pass circuit includes a plurality of and/or the second pass circuit includes a plurality of and/or the third pass circuit includes a plurality of and/or the fourth pass circuit includes a plurality of. Above-mentioned setting can realize that a plurality of heart yearns detect simultaneously, has improved detection efficiency.
In the technical scheme of this embodiment, the core wire resistance test circuit includes a plurality of one-to-two switches, a first connection circuit and a second connection circuit, the positive pole of the insulation meter is connected with the first connection circuit, the negative pole of the insulation meter is connected with the second connection circuit, one contact of each one-to-two switch is connected with the first connection circuit, the other contact of each one-to-two switch is connected with the second connection circuit, one-to-two switch corresponds to four connection lines, and each connection line is connected with the connection terminal. The structure can realize insulation detection among different core wires so as to improve the use safety performance.
In the technical scheme of this embodiment, the insulation test circuit includes an insulation test positive electrode connected to a positive electrode of the insulation meter, an insulation test negative electrode connected to a negative electrode of the insulation meter, a plurality of one-to-two switches, and a plurality of branches, the plurality of branches are paired branches corresponding to the plurality of one-to-two switches, a positive branch of each branch is connected to the positive electrode of the insulation meter, a negative branch of each branch is connected to the negative electrode of the insulation meter, a cable is connected to the one-to-two switches correspondingly, the one-to-two switch is pulled to one side to be connected to the positive electrode of the insulation meter, and the one-to-two switch is pulled to the other side to be connected to the negative electrode of the insulation meter. The structure has high efficiency in detection, and one-to-many different detections can be realized only by pulling the switch.
In the technical scheme of this embodiment, a plurality of one-to-two switches are all arranged on the shell. The structure is convenient to set. Specifically, as shown in fig. 1, a plurality of one-to-two switches are provided at a lower portion of the front surface of the housing.
Therefore, the multifunctional cable detector comprises a box body, an insulation meter, an insulation test outgoing line, a test cable outgoing line, a switching cable outgoing line, a power supply outgoing line, an MTS-203 dial switch and an LED indicator lamp.
As shown in fig. 1, it is characterized in that: the box body is of a cuboid structure, and an LED indicator lamp, an MTS-203 dial switch, an insulation meter, an ohm gear and an insulation gear testing end are mounted on the box body. The side surfaces are respectively an insulation test outgoing line, a test cable outgoing line, a switching cable outgoing line and a power supply outgoing line.
Preferably, the shell is made of ABS material, and has the characteristics of water resistance, dust resistance, sun protection, falling resistance, corrosion resistance and the like;
preferably, the design of the shell is compatible with expandability, and the shell is provided with an expandable interface for increasing the power supply conversion module and reserves a space;
preferably, an LED indicator lamp with a 1K current-limiting resistor packaged inside is selected and can be directly connected with a voltage-stabilizing power supply;
preferably, considering maintainability and reliability, the working environment is selected to be-40 ℃ to +85 ℃, the contact resistance is less than or equal to 0.02 omega, the insulation resistance is greater than or equal to 1000 MOmega, the service life is greater than or equal to 10000 cycles, and the MTS-203 switch is provided with two switches or components of the same type.
Referring to fig. 2, cable outgoing lines at two ends 2 and 4 in fig. 1 are interconnected, a power supply outgoing line 5 is connected with a voltage stabilizing power supply, a power switch of an LED indicator lamp 11 is turned on, and the LED indicator lamps are all turned on, so that the self-checking function of the equipment can be realized.
Referring to fig. 3, the outgoing lines of the test cables 2 and 3 in fig. 1 are connected with the test cable to be tested, and the conduction test of the test cable can be realized through the gating of the MTS-203 dial switch and the matching of the LED indicator lamp; similarly, the leading-out wires of the 2 and 4 switching cables in the figure 1 are connected with the switching cable to be tested, so that the conductivity test of the switching cable can be realized.
Referring to fig. 4, the cable outgoing line 2 in fig. 1 is connected with one end of the cable to be tested, the internal resistance outgoing line of the cable to be tested of the tooling to be tested is connected to the outgoing line 1 of the point to be tested of the dial switch and the outgoing line 2 of the point to be tested through connectors, and the positive meter pen and the negative meter pen of the insulation meter are connected to the middle point of the dial switch. Through the gating of the MTS-203 dial switch and the matching of ohmic gears of the insulation meter, when the switch is in a conducting state upwards, the outgoing line 1 of the point to be measured and the positive meter pen of the insulation meter and the outgoing line 2 of the insulation meter are connected; when the switch is in a downward conducting state, the outgoing line 3 of the point to be measured and the positive meter pen of the insulation meter and the outgoing line 4 of the insulation meter are connected; and similarly, the outgoing lines 5 and 6 and the outgoing lines 7 and 8 can be measured, and the resistance value test between the cable cores to be tested can be realized.
Referring to fig. 5, the 1 insulation test outgoing line in fig. 1 is connected with one end of a tested tool cable, the positive meter pen of the insulation meter is connected with the upper end of the MTS-203 dial switch, the negative meter pen of the insulation meter is connected with the lower end of the MTS-203 dial switch, and the insulation test outgoing line is connected with the middle of the MTS-203 dial switch. Through the matching of the MTS-203 dial switch and the insulation gear, when all the dial switches are positioned in the same direction (at the same top or at the same bottom), the dial switch of the tested point is toggled, and the insulation test of the tooling cable can be realized.
Referring to fig. 6, the internal wiring relationship of the equipment self-inspection and the cable conductivity test is shown.
Referring to fig. 7, the internal resistance of the cable measures the wiring relationship.
Referring to fig. 8, the cable insulation test equipment is shown in an internal wiring relationship.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A multi-functional cable tester, comprising:
the box body is provided with a power supply wiring port and an output wiring port;
the insulation meter is fixed in the box body;
the input end of the self-checking circuit and the insulation meter share a wiring terminal, and the input end of the self-checking circuit and the output end of the self-checking circuit are arranged at the output wiring port;
the input end of the switching conduction test circuit and the output end of the switching conduction test circuit are arranged at the wiring port;
the input end of the insulation test circuit is respectively connected with the positive electrode and the negative electrode of the insulation meter, and the output end of the insulation test circuit is arranged at the wiring port;
the input end of the core wire resistance value test circuit is respectively connected with the positive electrode and the negative electrode of the insulation meter, and the output end of the core wire resistance value test circuit is arranged at the wire connector;
the wiring port comprises a first wiring port and a second wiring port, the first wiring port and the second wiring port respectively correspond to the positive pole and the negative pole of the circuit, and the switching conduction test circuit and the core wire resistance test circuit share the output end.
2. The multi-functional cable tester according to claim 1, wherein the first interface is provided with a plurality of sets of first cable connection terminals, each set of first cable connection terminals including a plurality of first connection terminals, one of the first connection terminals corresponding to a core of one of the cables, the second interface is provided with a plurality of sets of second cable connection terminals, each set of second cable connection terminals including a plurality of second connection terminals, one of the second connection terminals corresponding to a core of one of the cables.
It should be noted that the number of the first terminals of the first connection terminal corresponds to the number of the second terminals of the second connection terminal.
3. The multifunctional cable tester according to claim 2, wherein the self-test circuit comprises a main self-test circuit, a plurality of branch self-test circuits and a plurality of LED indicator lamps, a first end of each branch self-test circuit is connected in parallel with the branch self-test circuit, a second end of each branch self-test circuit is connected with the wiring terminal, and the LED indicator lamps are arranged on the branch self-test circuits in a one-to-one correspondence manner.
It should be noted that a switch is arranged on the main self-test path, and the switch is arranged on the shell.
4. The multi-functional cable tester of claim 3, wherein the self-test circuit further comprises a self-test circuit switch disposed on the self-test main circuit, the self-test circuit switch passing through the housing and being secured to the housing by a nut.
5. The multifunctional cable tester according to claim 3, wherein the switching conduction test circuit comprises a conduction positive main circuit, a conduction negative main circuit, a first conduction branch circuit and a second conduction branch circuit, wherein a first end of a positive branch of the first conduction branch circuit is connected to the conduction positive main circuit, a second end of a positive branch of the first conduction branch circuit is connected to the connection terminal, a first end of a negative branch of the first conduction branch circuit is connected to the conduction negative branch circuit, and a second end of a negative branch of the first conduction branch circuit is connected to the connection terminal; the second conduction branch comprises two positive pole branches and a negative pole branch, first ends of the two positive pole branches are connected with the positive pole main circuit, second ends of the two positive pole branches are communicated and connected with the wiring terminal, a first end of the negative pole branch of the second conduction branch is communicated with the negative pole main circuit, and a second end of the negative pole branch of the second conduction branch is connected with the wiring terminal.
It should be noted that the second ends of the two positive branches are connected to each other through a two-in-one switch, i.e. one switch is connected to two wires, see the switch structure of fig. 5 in particular.
6. The multifunctional cable tester according to claim 5, wherein the switching conduction test circuit further comprises a third conduction branch and a fourth conduction branch, the third conduction branch comprises a positive branch and two negative branches, a first end of the positive branch of the third conduction branch is connected to the positive main circuit, a second end of the positive branch of the third conduction branch is connected to the connection terminal, first ends of the two negative branches of the third conduction branch are connected to the negative main circuit, second ends of the two negative branches of the third conduction branch are connected to the connection terminal, the fourth conduction branch comprises two positive branches and two negative branches, a first end of the two positive branches of the fourth conduction branch is connected to the positive main circuit, and second ends of the two positive branches of the fourth conduction branch are connected to the connection terminal, the first ends of the two negative pole branches of the fourth conducting branch are communicated with the conducting negative pole main circuit, and the second ends of the two negative pole branches of the fourth conducting branch are communicated and connected with the wiring terminal.
It should be noted that two negative electrode branches and one terminal of the third conducting branch are controlled by a one-to-two switch.
7. The multi-function cable tester of claim 6, wherein the first conductive circuit includes a plurality and/or the second conductive circuit includes a plurality and/or the third conductive circuit includes a plurality and/or the fourth conductive circuit includes a plurality.
8. The multifunctional cable tester according to any one of claims 1 to 7, wherein the core resistance test circuit comprises a plurality of one-to-two switches, a first connection circuit and a second connection circuit, wherein the positive pole of the insulation meter is connected to the first connection circuit, the negative pole of the insulation meter is connected to the second connection circuit, one contact of each one-to-two switch is connected to the first connection circuit, the other contact of each one-to-two switch is connected to the second connection circuit, one-to-two switch corresponds to four connection lines, and each connection line is connected to the connection terminal.
9. The multifunctional cable tester according to claim 8, wherein the insulation test circuit comprises an insulation test positive electrode connected to a positive electrode of the insulation meter, an insulation test negative electrode connected to a negative electrode of the insulation meter, a plurality of one-to-two switches and a plurality of branches, the plurality of branches are paired branches corresponding to the plurality of one-to-two switches, a positive branch of each branch is connected to the positive electrode of the insulation meter, a negative branch of each branch is connected to the negative electrode of the insulation meter, a cable is correspondingly connected to the one-to-two switches, the one-to-two switches are pulled to one side to be connected to the positive electrode of the insulation meter, and the one-to-two switches are pulled to the other side to be connected to the negative electrode of the insulation meter.
10. The multi-function cable testing machine of claim 9, wherein said plurality of one-to-two switches are disposed on said housing.
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| CN202110521833.2A CN113341281A (en) | 2021-05-13 | 2021-05-13 | Multifunctional cable detector |
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| CN202110521833.2A CN113341281A (en) | 2021-05-13 | 2021-05-13 | Multifunctional cable detector |
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| CN116381414A (en) * | 2023-04-27 | 2023-07-04 | 河南思维轨道交通技术研究院有限公司 | Cable test bench and test method thereof |
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