CN111929617A - Cable tester, cable testing method and cable testing system - Google Patents
Cable tester, cable testing method and cable testing system Download PDFInfo
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- CN111929617A CN111929617A CN202011073818.8A CN202011073818A CN111929617A CN 111929617 A CN111929617 A CN 111929617A CN 202011073818 A CN202011073818 A CN 202011073818A CN 111929617 A CN111929617 A CN 111929617A
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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
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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
- G01R31/52—Testing for short-circuits, leakage current or ground faults
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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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Abstract
The invention provides a cable tester, a cable testing method and a cable testing system, which relate to the technical field of electronic power and comprise a processor, and a communication module, an output module and an input module which are respectively connected with the processor; the communication module is used for receiving cable information of the cable to be tested selected by the external equipment and sending the cable information to the output module; the output module is used for outputting a specified level to the inner core to be tested of the cable to be tested based on the cable information; the input module is used for acquiring the level state of the inner core to be tested after responding to the designated level and sending the level state to the processor; the processor is used for determining a test result of the inner core to be tested according to the level state and sending the test result to the communication module; the test result comprises a through state, a short circuit state or an open circuit state of the inner core to be tested. The invention reduces the cost of cable test, improves the efficiency and quality of test, and can comprehensively detect the possible faults of the cable.
Description
Technical Field
The invention relates to the technical field of electronic power, in particular to a cable tester, a cable testing method and a cable testing system.
Background
At present, a large-scale system usually adopts cables with dozens of cores or even hundreds of cores, and the cable interfaces used in the same system are various. In order to enable the cable to work normally, the cable needs to be detected before use, but the difficulty is high when the multi-core cable is detected. Before the cable is used, a manual detection method is usually adopted for detection, the detection process is complicated, and the detection quality cannot be guaranteed; for some common test instruments, the on-off of the cable can be tested only, and special conditions such as short circuit and necessary short circuit cannot be tested. Based on the above situation, the current method for testing the cable has the disadvantages of high cost (time cost and labor cost), low testing efficiency, no guarantee of testing quality, and no comprehensive detection of faults.
Disclosure of Invention
The invention aims to provide a cable tester, a cable testing method and a cable testing system, which reduce the cost of cable testing, improve the testing efficiency and quality and can comprehensively detect possible faults of cables.
In a first aspect, an embodiment of the present invention provides a cable tester, including: the device comprises a processor, and a communication module, an output module and an input module which are respectively connected with the processor; the output module comprises a decoder, a plurality of Schottky diodes and a first wiring terminal; the input module comprises a multiplexing switch, a plurality of current-limiting resistors and a second wiring terminal; the communication module is used for receiving cable information of the cable to be tested selected by the external equipment and sending the cable information to the output module; the output module is used for outputting a specified level to the inner core to be tested of the cable to be tested based on the cable information; the input module is used for acquiring the level state of the inner core to be tested after responding to the designated level and sending the level state to the processor; the processor is used for determining a test result of the inner core to be tested according to the level state and sending the test result to the communication module; the test result comprises the current state of the inner core to be tested; the current state includes a pass state, a short circuit state, or an open circuit state.
In an optional embodiment, the number of the schottky diodes is set corresponding to the number of the output interfaces of the decoder; the input interface of the decoder is connected with the processor; each output interface of the decoder is connected with a Schottky diode; the first connection terminal is connected to the plurality of Schottky diodes.
In an optional embodiment, the number of the current-limiting resistors is set corresponding to the number of the output interfaces of the multiplexing switch; the input interface of the multiplexing switch is connected with the processor; each output interface of the multiplexing switch is connected with a current-limiting resistor; the second connecting terminal is connected with a plurality of current-limiting resistors.
In an optional embodiment, the number of the output modules and the number of the input modules are both multiple.
In an alternative embodiment, the cable tester further comprises: a plurality of types of first cable interfaces connected with the plurality of output modules, and a plurality of types of second cable interfaces connected with the plurality of input modules; the types of the first cable interface and the second cable interface connected with the two ends of the same cable to be tested are the same or different.
In an alternative embodiment, the number of the output modules and the number of the input modules are both two.
In an alternative embodiment, the output module comprises a plurality of decoders connected in parallel in a plurality of stages; the input module comprises a plurality of multiplexing switches connected in parallel in multiple stages; the number of the multi-stage parallel decoders is the same as that of the multi-stage parallel multiplexing switches.
In an alternative embodiment, the number of processor IO ports exceeds a specified threshold, and the output module includes a schottky diode and a terminal.
In a second aspect, an embodiment of the present invention provides a cable testing method, where the method is applied to the cable tester in any one of the foregoing embodiments, and the method includes: receiving cable information of a cable to be tested, which is sent by external equipment, through a communication module, and sending the cable information to an output module; outputting a designated level to an inner core to be tested of the cable to be tested through an output module based on the cable information; acquiring a level state of the inner core to be tested after responding to the designated level through an input module, and sending the level state to a processor; determining a test result of the inner core to be tested according to the level state through the processor, and sending the test result to the communication module; the test result comprises the current state of the inner core to be tested; the current state includes a pass state, a short circuit state, or an open circuit state.
In a third aspect, an embodiment of the present invention provides a cable test system, where the cable test system includes the cable tester of the foregoing embodiment, and an external device communicatively connected to the cable tester.
The invention provides a cable tester, a cable testing method and a cable testing system, wherein the cable tester comprises a processor, and a communication module, an output module and an input module which are respectively connected with the processor, wherein the output module comprises a decoder, a plurality of Schottky diodes and a first wiring terminal; the input module comprises a multiplexing switch, a plurality of current-limiting resistors and a second wiring terminal; the communication module is used for receiving cable information of a cable to be tested selected by external equipment and sending the cable information to the output module, the output module is used for outputting a specified level to an inner core to be tested of the cable to be tested based on the cable information, the input module is used for collecting a level state of the inner core to be tested after responding to the specified level and sending the level state to the processor, the processor is used for determining a test result of the inner core to be tested according to the level state and sending the test result to the communication module, and the test result comprises the current state of the inner core to be tested; the current state includes a pass state, a short circuit state, or an open circuit state. The cable to be tested is tested by the cable tester, manual testing is not needed, and labor cost and time cost are improved; the test result is determined by the post-processor according to the level state after the inner core to be tested responds to the specified level, so that the test accuracy is higher, and the cable test quality is improved; because the test result comprises the passage state, the short circuit state or the open circuit state of the inner core to be tested, the fault possibly existing in the cable can be comprehensively detected. In conclusion, the embodiment reduces the cost of cable test, improves the efficiency and quality of cable test, and can comprehensively detect possible faults of the cable.
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, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of a cable tester according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an output module according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an input module according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a specific cable tester provided in an embodiment of the present invention;
fig. 5 is a schematic flow chart of a cable testing method according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a cable testing system according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of another cable testing system according to an embodiment of the present invention.
Icon: 10-cable tester; 100-a processor; 101-a communication module; 102-an output module; 103-an input module; 20-external device.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as meaning either a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Some embodiments of the invention are described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
Considering that the conventional cable test usually adopts a manual detection method for detection before the cable is used, the detection process is complicated and the detection quality cannot be ensured; for some common test instruments, the on-off of the cable can be tested only, and special conditions such as short circuit and necessary short circuit cannot be tested. Based on this, the cable tester, the cable testing method and the cable testing system provided by the embodiment of the invention reduce the cost of cable testing, improve the efficiency and quality of cable testing, and can comprehensively detect possible faults of the cable.
For understanding, a detailed description of a cable tester provided in the present embodiment is first provided, and referring to a schematic structural diagram of a cable tester shown in fig. 1, the cable tester 10 includes a processor 100, and a communication module 101, an output module 102, and an input module 103 respectively connected to the processor 100. The communication module 101 is configured to receive cable information of a cable to be tested selected by an external device, and send the cable information to the output module 102, for example, in an embodiment, the external device is an upper computer, the cable information is a model of the cable, and by receiving the model of the cable to be tested selected in advance by the upper computer, which model of the cable to be tested is determined, so as to select a corresponding test program (a test program pre-programmed in the processor 100) for the model of the cable. The output module 102 is configured to output a specified level to the inner core to be tested of the cable to be tested based on the cable information, and it can be understood that since the inner core of the cable is usually tens of cores to hundreds of cores, one end of the inner core to be tested of the cable to be tested is connected to the output module 102, so that the output module 102 outputs the specified level to the inner core to be tested of the cable to be tested based on the cable information, where the specified level may be a high level. The input module 103 is connected to the other end of the inner core to be tested of the cable to be tested (i.e. the other end of the inner core to be tested connected to the output module 102), and is configured to collect a level state of the inner core to be tested after responding to a specified level, and send the level state to the processor 100, the processor 100 is configured to determine a test result of the inner core to be tested according to the level state, and send the test result to the communication module 101, so that the test result is sent to the external device through the communication module 101, where the test result includes a current state of the inner core to be tested, and the current state includes a path state, a short circuit state or. In an embodiment, there may be multiple cores to be tested simultaneously, and for different current states (a path state, a short circuit state, or an open circuit state) of different cores to be tested, the level states of the cores to be tested after responding to the specified level output by the output module 102 are different, so that different test results may be determined for the different cores to be tested. For example, when the processor 100 determines that the cores No. 1, No. 2, and No. 3 to be tested are in the on-state, the short-circuit state, and the open-circuit state, respectively, the test results of the cores No. 1, No. 2, and No. 3 to be tested are sent to the external device (i.e., the upper computer) through the communication module 101, so that the upper computer displays the test results.
According to the cable tester provided by the embodiment of the invention, the cable to be tested is tested by the cable tester, manual testing is not needed, and the labor cost and the time cost are improved; the test result is determined by the post-processor according to the level state after the inner core to be tested responds to the specified level, so that the test accuracy is higher, and the cable test quality is improved; because the test result comprises the passage state, the short circuit state or the open circuit state of the inner core to be tested, the fault possibly existing in the cable can be comprehensively detected.
To facilitate understanding of the cable tester 10, the output module 102 is first described, where the output module 102 includes a decoder, a plurality of schottky diodes and a first connection terminal, the number of the schottky diodes is set corresponding to the number of the output interfaces of the decoder, the input interface of the decoder is connected to the processor, each output interface of the decoder is connected to one schottky diode, and the first connection terminal is connected to the plurality of schottky diodes.
In an embodiment, the output module may refer to a schematic structural diagram of an output module shown in fig. 2, and in order to facilitate understanding of a wiring harness relationship of the output module 102, a processor is shown in fig. 2 as a Micro Controller Unit (MCU) (i.e., a single chip microcomputer) and is connected to the output module. The decoder shown in the figure is a 4-16 decoder, and in practical application, the decoder can also be a 3-8 decoder. Since the 4-16 decoder can save the I/O connection wires with the single chip microcomputer, and the single chip microcomputer with the same number of I/O ports can drive cables with more wires, the 4-16 decoder is adopted in the embodiment. The number of the 4-16 decoders is 2, the number of the first connecting terminals is 2, and each 4-16 decoder is connected with the first connecting terminals through 16 Schottky diodes.
In another embodiment, the number of processor IO ports exceeds a specified threshold, and the output module includes a schottky diode and a terminal. The number of IO ports of the processor is determined by the type of the processor, so that a specified threshold value can be set according to actual conditions, and when the number of the IO ports of the selected processor of the current type exceeds the specified threshold value, the output module can be connected without a decoder and directly connected with the IO ports of the processor and the first wiring terminal through the Schottky diode.
In the embodiment shown in fig. 2, the output module outputs a voltage of 3.3V to pull up the level of the individual wire harness, and if a common diode is used, since the on-state voltage of the common diode is above 0.7V, and the voltage drop of the internal resistance of the cable is also included in the actual test, for the multiplexing switch with the standard of judging the high level above 2V, the voltage drop of the diode and the internal resistance subtracted from 3.3V is about 2V, which may cause the judgment error of the multiplexing switch, and thus may cause the accuracy of the cable test to be low. The Schottky diode selected by the embodiment can avoid judgment errors due to lower conduction voltage, and the accuracy of cable test is improved.
The input module 103 may refer to a schematic structural diagram of an input module shown in fig. 3, and in order to facilitate understanding of a wire harness relationship of the input module 103, a processor is taken as an example in fig. 3 and is schematically connected with the input module. The input module 103 includes a multiplexing switch, a plurality of current-limiting resistors, and a second connection terminal, where the number of the multiplexing switch in fig. 3 is two, and the multiplexing switch may be specifically set according to the core number of the cable in practical application, the number of the current-limiting resistors corresponds to the number of the output interfaces of the multiplexing switch, the input interface of the multiplexing switch is connected to the processor, each output interface of the multiplexing switch is connected to one current-limiting resistor, and the second connection terminal is connected to a plurality of current-limiting resistors. In one embodiment, the current limiting resistors are 10K Ω current limiting resistors, the number of multiplexing switches is 2, and each multiplexing switch is connected to 16 current limiting resistors, so that the input module of this embodiment uses 32 current limiting resistors, that is, R1 to R32 shown in fig. 3.
The cable detector with the structure provided by the embodiment can also detect the short circuit or short circuit condition of the inner core (or called core) of the cable, the short circuit referred to by the embodiment is also the condition that the cores should not be connected but the cores are connected due to misoperation under normal conditions, and the short circuit is also the condition that some cores need to be connected for use under normal conditions (the short circuit is actually an open circuit state and is determined only due to use requirements but not caused by the fault of the cores). To the condition of cable short circuit and short circuit, this embodiment detects through carrying out programming control to the singlechip. For convenience of understanding, the case that the core of the cable to be tested represents +5V is taken as an example for illustration, since a short circuit usually occurs in both a power supply and a ground, the +5V is adopted to represent the case that the power supply has a short circuit, and in practical application, the case may also be +10V, +15V, and the like (which are merely examples), and the core +5V, +10V, and the like are not related to the detection of the cable tester and are only for convenience of description. For example, for a 30-core cable, the requirement for use is to connect the o 1 o 2 o 3 lines of the cores, and then the cores are connected by short-circuiting one end of the o 1 o 2 o 3 line of the core to be tested and keeping the other end normal, and then the cable is detected by a cable detector (the cable tester needs a processor (i.e. an MCU) to perform logic operation). The cable detector adopts the mode that each way of sinle silk one end supplies power alone, and the state of all sinle silks is detected simultaneously to the other end to detect. When power is supplied to the O1 line, the O2 line and the O3 line, the high level of the O1 line, the high level of the O2 line and the low level of the other line are detected, and the normal state (namely the access state) of the O1 line, the O2 line and the O3 line is indicated when the power is supplied to the O1 line, the O2 line and the O3 line; when the high level of the line O7 is given, if the high level of the line O8 is detected and the low levels of the other line cores are detected, the short circuit state of the line O7 and the line O8 is indicated. The power is supplied until line o 30, and the detection is completed. When the cable tester of the embodiment is used for carrying out short circuit or short circuit test, the inner core to be tested is tested through the programming processing of the MCU. In practical application, the testing device can process various logic operations through the MCU so as to test various types of cores to be tested, for example, the cores to be tested are preselected on the upper computer, and cable information sent by the upper computer aiming at the cores to be tested is received so as to test the cores to be tested.
Based on the above structure, this embodiment provides a specific cable tester, refer to the schematic structural diagram of a specific cable tester shown in fig. 4, and this tester is composed of MCU and input module, output module, and communication module, and the tester has multiple cable interfaces, so that it can support cable tests with different wire numbers and different interfaces, and is suitable for cable tests with different models or cables with more cable cores. The output module consists of a 4-16 decoder, a Schottky diode and a wiring terminal, the input module consists of a multiplexing switch, a current-limiting resistor and a wiring terminal, and the communication module consists of a 485 chip and a matching circuit. The cable tester and the upper computer communicate through a 485 serial port, the number of cable lines or the type of a special cable (namely the cable information) is selected by receiving the upper computer, one end of the cable is connected to an output module interface of the tester, the other end of the cable is connected to an input module interface, the tester supplies power to each cable line (namely the inner core to be tested) independently through a chip selection decoder (such as a 4-16 decoder) and a gating channel of the output module, and the Schottky diode can ensure that the high level of the gating cable is not pulled down by the low level of the short-circuit cable. Then the high level enters the multiplexing switch through the cable, and is collected to the MCU through the IO port gating channel of the MCU for processing, whether the inner core to be tested of the current test is broken or short-circuited with other circuits is judged, and the test result is sent to the upper computer through the communication module, so that the upper computer displays the test result, such as the cable test PASS or a certain circuit is broken, a certain circuit is short-circuited and the like.
In order to test cables with more harnesses, the present embodiment may extend the output module and the input module, and the cable tester may detect cables with thousands of cores by extending the input module and the output module. In one embodiment, the number of the output modules and the number of the input modules are both multiple, each output module comprises multiple stages of decoders connected in parallel, and each input module comprises multiple stages of multiplexing switches connected in parallel; the number of the multi-stage parallel decoders is the same as that of the multi-stage parallel multiplexing switches. Taking the output module as an example, the MCU controls the first specified number of 4-16 decoders, and then each 4-16 decoder of the first specified number of 4-16 decoders outputs and controls the second specified number of 4-16 decoders, and the multistage parallel connection of the 4-16 decoders can expand the output module, so that the cable tester can be expanded, and the expansion result of cables with thousands of cores can be tested at the same time. The input module is expanded in a manner similar to the expansion manner of the output module, the multiplexing switches with the third designated number are controlled by the MCU, and then the multiplexing switches with the fourth designated number are connected with each multiplexing switch with the third designated number to expand the input module.
In order to test cables with different types and different interfaces, the cable tester further includes a plurality of types of first cable interfaces connected to the plurality of output modules, and a plurality of types of second cable interfaces connected to the plurality of input modules, wherein the types of the first cable interfaces and the second cable interfaces connected to two ends of the same cable to be tested are the same or different. The types of cable interfaces may include, for example, heavy duty connectors and hermetic connectors, and may also include RJ-45 interfaces, RJ-48 interfaces, and the like. In one embodiment, both ends of the same cable to be tested can be respectively connected with the output module and the input module through heavy-duty connectors; one end of the output module can be connected with the output module through a heavy-load connector, and the other end of the output module can be connected with the input module through an airtight connector; one end of the output module can be connected with the output module through the airtight connector, and the other end of the output module can be connected with the input module through the heavy-load connector. In practical application, the cable interface of the corresponding type may be selected according to actual test requirements, and is not specifically limited herein. By arranging various cable interfaces, the testing requirements of cables of different types can be met, and the applicability and the expansibility of the cable tester are better improved.
In conclusion, the cable tester provided by the embodiment reduces the cost of cable testing, improves the efficiency and quality of cable testing, and can comprehensively detect possible faults of the cable; and through expanding output module and input module, can also test the cable of thousands of cores, the suitability is better, and cable efficiency of software testing is higher simultaneously.
With respect to the cable tester provided in the foregoing embodiment, an embodiment of the present invention provides a cable testing method, which is applied to the cable tester in any one of the foregoing embodiments, and referring to a flow diagram of the cable testing method shown in fig. 5, the method mainly includes the following steps S502 to S508:
step S502, receiving cable information of the cable to be tested sent by the external equipment through the communication module, and sending the cable information to the output module.
And step S504, outputting the specified level to the inner core to be tested of the cable to be tested through the output module based on the cable information.
And S506, acquiring the level state of the inner core to be tested after responding to the designated level through the input module, and sending the level state to the processor.
In an embodiment, the inner cores to be tested may be multiple, that is, the multiple inner cores to be tested are tested simultaneously, when the output module inputs a specific level to the inner cores to be tested of the cable to be tested, the specific level may be a high level, for example, by sequentially outputting the specific level to each inner core to be tested, when the inner cores to be tested respond to the high level output by the output module, the input module simultaneously collects the level states of the multiple inner cores to be tested after responding to the high level, and simultaneously sends the level states of the multiple inner cores to be tested to the processor for processing.
Step S508, determining a test result of the inner core to be tested according to the level state through the processor, and sending the test result to the communication module; the test result comprises the current state of the inner core to be tested; the current state includes a pass state, a short circuit state, or an open circuit state.
According to the cable testing method provided by the embodiment of the invention, the cable to be tested is tested by the cable tester in any one of the above embodiments, manual testing is not needed, and the labor cost and the time cost are increased; the test result is determined by the post-processor according to the level state after the inner core to be tested responds to the specified level, so that the test accuracy is higher, and the cable test quality is improved; because the test result comprises the passage state, the short circuit state or the open circuit state of the inner core to be tested, the fault possibly existing in the cable can be comprehensively detected.
The embodiment of the present invention further provides a cable testing system, which refers to a schematic structural diagram of a cable testing system shown in fig. 6, the cable testing system includes the cable tester 10 of the foregoing embodiment, and an external device 20 in communication connection with the cable tester, where the external device 20 is an upper computer, such as an electronic device that may include a mobile phone, a PC, a tablet computer, and the like. The cable to be tested is tested by the cable testing system, manual testing is not needed, and labor cost and time cost are improved; because the test result is determined by the post-processor 100 according to the level state after the inner core to be tested responds to the specified level, the test accuracy is higher, and the cable test quality is improved; because the test result comprises the passage state, the short circuit state or the open circuit state of the inner core to be tested, the fault possibly existing in the cable can be comprehensively detected.
In an embodiment, when the processor is a single chip microcomputer MCU, an embodiment of the present invention further provides a cable test system, see fig. 7 for a schematic structural diagram of another cable test system, where an input module and an output module of the cable test system are respectively connected to a cable to be tested, and the MCU and an upper computer are connected through a communication module.
In summary, the cable tester, the cable testing method and the cable testing system provided by the embodiments of the present invention reduce the cost of cable testing, improve the efficiency and quality of cable testing, and can comprehensively detect possible faults of a cable, thereby improving the automatic testing of the cable. Meanwhile, the output module and the input module can be further expanded, so that thousands of cables can be tested, the applicability is better, and the cable testing efficiency is higher.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A cable tester, comprising: the device comprises a processor, and a communication module, an output module and an input module which are respectively connected with the processor; the output module comprises a decoder, a plurality of Schottky diodes and a first wiring terminal; the input module comprises a multiplexing switch, a plurality of current-limiting resistors and a second wiring terminal;
the communication module is used for receiving cable information of a cable to be tested selected by external equipment and sending the cable information to the output module;
the output module is used for outputting a specified level to the inner core to be tested of the cable to be tested based on the cable information;
the input module is used for acquiring the level state of the inner core to be tested after responding to the specified level and sending the level state to the processor;
the processor is used for determining a test result of the inner core to be tested according to the level state and sending the test result to the communication module; the test result comprises the current state of the inner core to be tested; the current state comprises a pass-through state, a short-circuit state or an open-circuit state.
2. The cable tester of claim 1, wherein the number of schottky diodes corresponds to the number of output interfaces of the decoder; the input interface of the decoder is connected with the processor; each output interface of the decoder is connected with a Schottky diode; the first connecting terminal is connected with the Schottky diodes.
3. The cable tester of claim 1, wherein the number of the current limiting resistors is set corresponding to the number of the output interfaces of the multiplexing switch; the input interface of the multiplexing switch is connected with the processor; each output interface of the multiplexing switch is connected with a current-limiting resistor; the second connecting terminal is connected with the plurality of current-limiting resistors.
4. The cable tester of claim 1, wherein the number of output modules and the number of input modules are both plural.
5. The cable tester of claim 4, further comprising:
a plurality of types of first cable interfaces connected to the plurality of output modules, and a plurality of types of second cable interfaces connected to the plurality of input modules; the types of the first cable interface and the second cable interface connected with the two ends of the same cable to be tested are the same or different.
6. The cable tester of claim 4, wherein the number of output modules and the number of input modules are both two.
7. The cable tester of claim 5, wherein the output module includes a plurality of decoders connected in parallel in a plurality of stages; the input module comprises a plurality of multiplexing switches connected in parallel in multiple stages; the number of the multi-stage parallel decoders is the same as that of the multi-stage parallel multiplexing switches.
8. The cable tester of claim 1, wherein the number of processor IO ports exceeds a specified threshold, and the output module includes a schottky diode and a terminal.
9. A cable testing method applied to the cable tester of any one of claims 1 to 8, the method comprising:
receiving cable information of a cable to be tested, which is sent by external equipment, through the communication module, and sending the cable information to an output module;
outputting a designated level to an inner core to be tested of the cable to be tested based on the cable information through the output module;
acquiring the level state of the inner core to be tested after responding to the specified level through an input module, and sending the level state to a processor;
determining a test result of the inner core to be tested according to the level state through the processor, and sending the test result to the communication module; the test result comprises the current state of the inner core to be tested; the current state comprises a pass-through state, a short-circuit state or an open-circuit state.
10. A cable test system comprising the cable tester of any one of claims 1 to 8 and an external device communicatively connected to the cable tester.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113484735A (en) * | 2021-07-30 | 2021-10-08 | 锐石创芯（深圳）科技有限公司 | Chip test gating module and chip test system |
| CN114441992A (en) * | 2021-12-29 | 2022-05-06 | 苏州浪潮智能科技有限公司 | Test fixture, test device and test method for transmission cable line sequence |
| CN115865746A (en) * | 2022-12-06 | 2023-03-28 | 四川九洲电器集团有限责任公司 | Automatic testing method, device and system for low-frequency cable harness |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1065787A1 (en) * | 1982-08-17 | 1984-01-07 | Научно-Исследовательский Институт Тяжелого Машиностроения Производственного Объединения "Уралмаш" | Coaxial cable testing device |
| US20070114973A1 (en) * | 2005-11-21 | 2007-05-24 | Nec Electronics Corporation | Battery voltage monitoring apparatus |
| CN101937042A (en) * | 2010-08-23 | 2011-01-05 | 中国科学院声学研究所 | System for detecting connectivity of bank cable and method thereof |
| CN201898443U (en) * | 2010-11-19 | 2011-07-13 | 乐山市宏泰职业技能培训学校 | Alternating-current/direct-current power supply |
| CN205539291U (en) * | 2016-01-13 | 2016-08-31 | 哈尔滨理工大学 | Cable circuit on off test system |
| CN205643586U (en) * | 2016-04-25 | 2016-10-12 | 北京新能源汽车股份有限公司 | Electric motor car low pressure pencil detection device |
| CN106646076A (en) * | 2016-10-14 | 2017-05-10 | 宁德时代新能源科技股份有限公司 | High-voltage interlocking detection circuit |
| CN108599123A (en) * | 2018-01-18 | 2018-09-28 | 深圳创维－Rgb电子有限公司 | The short-circuit protection circuit and television set of power switch |
| CN111638473A (en) * | 2020-06-08 | 2020-09-08 | 西安西电光电缆有限责任公司 | Push rod cable integrated detection device and detection method thereof |
-
2020
- 2020-10-10 CN CN202011073818.8A patent/CN111929617B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1065787A1 (en) * | 1982-08-17 | 1984-01-07 | Научно-Исследовательский Институт Тяжелого Машиностроения Производственного Объединения "Уралмаш" | Coaxial cable testing device |
| US20070114973A1 (en) * | 2005-11-21 | 2007-05-24 | Nec Electronics Corporation | Battery voltage monitoring apparatus |
| CN101937042A (en) * | 2010-08-23 | 2011-01-05 | 中国科学院声学研究所 | System for detecting connectivity of bank cable and method thereof |
| CN201898443U (en) * | 2010-11-19 | 2011-07-13 | 乐山市宏泰职业技能培训学校 | Alternating-current/direct-current power supply |
| CN205539291U (en) * | 2016-01-13 | 2016-08-31 | 哈尔滨理工大学 | Cable circuit on off test system |
| CN205643586U (en) * | 2016-04-25 | 2016-10-12 | 北京新能源汽车股份有限公司 | Electric motor car low pressure pencil detection device |
| CN106646076A (en) * | 2016-10-14 | 2017-05-10 | 宁德时代新能源科技股份有限公司 | High-voltage interlocking detection circuit |
| CN108599123A (en) * | 2018-01-18 | 2018-09-28 | 深圳创维－Rgb电子有限公司 | The short-circuit protection circuit and television set of power switch |
| CN111638473A (en) * | 2020-06-08 | 2020-09-08 | 西安西电光电缆有限责任公司 | Push rod cable integrated detection device and detection method thereof |
Non-Patent Citations (3)
| Title |
|---|
| 冯建文: "《数字电路设计》", 31 October 2018, 西安电子科技大学出版社 * |
| 刘宝华: "多芯电缆断路、短路故障测试系统", 《电测与仪表》 * |
| 王尔乾: "《清华大学计算机系列教材 数字逻辑及数字集成电路》", 31 March 1994, 清华大学出版社 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113484735A (en) * | 2021-07-30 | 2021-10-08 | 锐石创芯（深圳）科技有限公司 | Chip test gating module and chip test system |
| CN113484735B (en) * | 2021-07-30 | 2022-11-08 | 锐石创芯(深圳)科技股份有限公司 | Chip test gating module and chip test system |
| CN114441992A (en) * | 2021-12-29 | 2022-05-06 | 苏州浪潮智能科技有限公司 | Test fixture, test device and test method for transmission cable line sequence |
| CN114441992B (en) * | 2021-12-29 | 2024-01-26 | 苏州浪潮智能科技有限公司 | Test fixture, test device and test method for cable sequence of transmission line |
| CN115865746A (en) * | 2022-12-06 | 2023-03-28 | 四川九洲电器集团有限责任公司 | Automatic testing method, device and system for low-frequency cable harness |
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