CN112924893B - Communication line detection method and communication line detection device - Google Patents
Communication line detection method and communication line detection device Download PDFInfo
- Publication number
- CN112924893B CN112924893B CN202010229353.4A CN202010229353A CN112924893B CN 112924893 B CN112924893 B CN 112924893B CN 202010229353 A CN202010229353 A CN 202010229353A CN 112924893 B CN112924893 B CN 112924893B
- Authority
- CN
- China
- Prior art keywords
- communication line
- communication
- pair
- line
- wiring terminals
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The invention discloses a communication line detection method and a communication line detection device, wherein the communication line comprises a communication line and communication line joints connected to two ends of the communication line, the communication line is provided with a plurality of wire cores, the communication line joints are provided with wiring terminals correspondingly connected with the wire cores, the detection method comprises the steps of connecting two wiring terminals A1 and A2 at one end of the communication line, and connecting two wiring terminals B1 and B2 at the other end of the communication line; detecting whether a loop is formed among the wiring terminals A1, B1, B2 and A2, and judging whether the communication line is normal; wherein, binding post A1 theoretically connects at the both ends of same root sinle silk with binding post B1, and binding post A2 theoretically connects at the both ends of same root sinle silk with binding post B2. The invention can detect the communication line after the connection between the wire core and the wiring terminal is finished, and detect whether the communication line is normal.
Description
Technical Field
The present invention relates to the field of communication line detection, and in particular, to a communication line detection method and a communication line detection apparatus.
Background
In an industrial production field, a large number of communication lines are required to be arranged for data transmission and interconnection among various devices. Meanwhile, various devices relate to different types of communication lines, and mainly have communication modes such as industrial Ethernet, serial communication and the like. Therefore, in the process of arranging communication lines on an industrial production site, various tests are required for detecting whether the corresponding lines are normally connected, and the work is heavy and complicated. Meanwhile, in later-stage production maintenance, communication fault removal also requires rapid detection of communication lines. The existing detection method has high cost, fussy operation and low efficiency.
The present invention has been made in view of this situation.
Disclosure of Invention
The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a communication line detection method.
Another objective of the present invention is to provide a communication line detection apparatus.
In order to solve the technical problems, the invention adopts the technical scheme that the basic concept is as follows: there is provided a communication line inspection method, the communication line including a communication line having a plurality of cores and communication line taps connected to both ends of the communication line, the communication line taps having connection terminals connected to the cores correspondingly,
connecting two wiring terminals A1 and A2 at one end of the communication line, and connecting two wiring terminals B1 and B2 at the other end of the communication line;
detecting whether a loop is formed among the wiring terminals A1, B1, B2 and A2, and judging whether the communication line is normal;
wherein, binding post A1 theoretically connects at the both ends of same root sinle silk with binding post B1, and binding post A2 theoretically connects at the both ends of same root sinle silk with binding post B2.
Further, the communication line is provided with one or more pairs of twisted pair cores, two connecting terminals theoretically used for connecting the same end of each pair of twisted pair cores are connected, two connecting terminals theoretically used for connecting the other end of each pair of twisted pair cores are connected, whether a loop is formed between the four connecting terminals is detected, and if yes, the line of each pair of twisted pair cores is normal; and if not, the line of the twisted pair wire core is in fault.
Furthermore, the communication line is provided with a shielding wire core, the shielding wire core is connected with two wiring terminals at the same end of the double-stranded wire core, the shielding wire core is connected with two wiring terminals at the other end of the double-stranded wire core, whether a loop is formed between the four wiring terminals is detected, and if yes, the line of the shielding wire core is normal; and if not, shielding the line fault of the wire core.
Further, the detection result of the communication line is indicated by connecting a light emitting diode between two connection terminals A1, A2 at one end of the communication line.
Further, two paths of level signals with opposite transmission directions and opposite level states are input to the same side of the light emitting diode, and if the light emitting diode is bright, the line connection is normal; if the light emitting diode is not on, the circuit is in failure.
Further, the communication line is an industrial Ethernet communication line and/or a serial communication line.
Further, the method comprises the following steps of,
s1, connecting a light-emitting diode between two wiring terminals A1 and A2 at one end of a communication line, and connecting a diode with the same conduction direction as the light-emitting diode between two wiring terminals B1 and B2 at the other end of the communication line;
s2, outputting two paths of level signals with opposite signal states;
and S3, inputting two paths of level signals with opposite transmission directions and opposite level states to the same side of the light-emitting diode, and judging whether the communication line is normal or not.
Further, the following steps are also included between the steps S2 and S3: and changing the frequency and/or level length of the two output level signals.
The invention also provides a communication line detection device, which adopts any one of the communication line detection methods.
Further, the communication line detection device includes,
the communication interface comprises a first communication interface and a second communication interface, the first communication interface and the second communication interface are respectively provided with one or more pairs of wiring terminals for connecting two ends of a communication circuit, and each pair of wiring terminals of the second communication interface are in one-way conduction connection;
the signal indicating module is arranged between each pair of wiring terminals and is used for indicating whether the communication circuit has faults or not;
the signal detection module is used for detecting whether the communication line has faults, and comprises a clock pulse generator, a first processing module and a second processing module:
the output end of the clock pulse generator is connected with the input end of the first processing module and used for outputting a clock level signal;
the output end of the first processing module is respectively connected with the input end of the second processing module and the first communication interface and is used for changing the length and the frequency of the output level of the clock pulse generator and generating a plurality of paths of sequential pulse level signals;
and the output end of the second processing module is connected with the first communication interface and is used for changing the state of the output level of the first processing module.
After the technical scheme is adopted, compared with the prior art, the invention has the following beneficial effects.
(1) The invention can detect the communication circuit after the connection of the wire core and the wiring terminal is finished, and detect whether the communication circuit is normal. Two of them binding post A1, A2 with communication line one end are connected, binding post A1, A2 correspond binding post B1, B2 of connecting on the sinle silk other end in theory and connect, detect through forming the return circuit between binding post A1, B1, B2, A2, judge whether communication line is normal, whether communication line connects with the communication line correctly, and this detection method is simple, easy to realize, can detect whether communication line connects normally. The communication line detection method can detect whether various communication lines are normal or not, can also detect whether shielding lines in the communication lines are normal or not, and facilitates arrangement of the communication lines in an industrial production field and later maintenance of the communication lines.
(2) According to the communication line detection device, the first communication interface and the second communication interface are arranged, after the communication line is connected between the communication interfaces, whether a loop is formed between the four wiring ends between the first communication interface and the second communication interface or not is sequentially inspected through the cooperation of the clock pulse generator, the first processing module and the second detection module, whether the communication line is correctly connected or not is judged, whether a fault exists or not is displayed through the signal indication module, and workers can conveniently check the line. The detection device has the advantages of simple structure and convenient operation, reduces the volume and the cost of the detection device, and improves the performance and the reliability of the detection device.
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
FIG. 1 is a schematic diagram of a communication line detection method according to the present invention;
FIG. 2 is a schematic view of a communication line detection apparatus according to the present invention;
FIG. 3 is a schematic diagram of a signal detection module of the present invention;
FIG. 4 is a schematic diagram of the main and auxiliary detection devices of the communication line of the present invention.
In the figure: 1. a communication interface, 11, a first communication interface, 111, a first industrial ethernet communication interface, 112, a first serial communication interface, 12, a second communication interface, 121, a second industrial ethernet communication interface, 122, a second serial communication interface; 2. the device comprises a function switching module 21, a test switch 22 and a test function switching switch; 3. a signal indicating module 31, a first indicator light, 32, a second indicator light, 33, a third indicator light, 34, a fourth indicator light, 35, a fifth indicator light, 36 and a sixth indicator light; 4. a main detection device; 5. a secondary detection device; 6. a clamping structure.
It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but rather to illustrate it for those skilled in the art by reference to specific embodiments.
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 will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1, the present invention provides a method for detecting a communication line, where the communication line includes a communication line and communication line connectors connected to two ends of the communication line, the communication line has a plurality of cores, and the communication line connectors have connection terminals correspondingly connected to the cores.
The communication line detection method comprises the steps of connecting two wiring terminals A1 and A2 at one end of a communication line, and connecting two wiring terminals B1 and B2 at the other end of the communication line; detecting whether a loop is formed among the wiring terminals A1, B1, B2 and A2, and judging whether the communication line is normal;
wherein, binding post A1 theoretically connects at the both ends of same root sinle silk with binding post B1, and binding post A2 theoretically connects at the both ends of same root sinle silk with binding post B2.
The communication line connectors at two ends of the communication line are the same, and in the process of laying the communication line in a factory, the wire cores of the communication line should be connected to the wiring terminals of the communication line connectors at two ends according to a set sequence, but in practice, the problems of wrong wiring terminal connection of the wire cores, wire core disconnection, short circuit, poor connection between the wire cores and the wiring terminals and the like may exist. The invention can detect the communication line after the connection between the wire core and the wiring terminal is finished, and detect whether the communication line is normal.
The invention connects two wiring terminals A1 and A2 at one end of the communication line, connects the wiring terminals A1 and A2 correspondingly connected with the wiring terminals B1 and B2 at the other end of the wire core theoretically, and judges whether the communication line is normal or not and whether the communication line is correctly connected with the communication line connector or not by detecting whether a loop is formed among the wiring terminals A1, B1, B2 and A2. The communication line detection method can detect whether various communication lines are normal or not, can also detect whether shielding lines in the communication lines are normal or not, can detect whether the communication lines are normally connected or not, and facilitates the arrangement of the communication lines in an industrial production field and the later maintenance of the communication lines.
The communication line is provided with one or more pairs of twisted-pair wire cores, two connecting terminals theoretically used for connecting the same end of each pair of twisted-pair wire cores are connected, two connecting terminals theoretically used for connecting the other end of each pair of twisted-pair wire cores are connected, whether a loop is formed between the four connecting terminals is detected, and if yes, the line of the pair of twisted-pair wire cores is normal; if not, the line of the twisted pair wire core fails. Specifically, if yes, the circuit of the pair of twisted wire cores is normal, and each pair of twisted wire cores is correctly connected with the wiring terminal thereof. If not, the double-twisted wire core is disconnected or short-circuited, or the double-twisted wire core is connected with a wrong wiring terminal, or the joint of the double-twisted wire core and the wiring terminal has a problem.
The communication line is provided with a shielding wire core, the shielding wire core is connected with two wiring terminals at the same end of a double-stranded wire core, the shielding wire core is connected with two wiring terminals at the other end of the double-stranded wire core, whether a loop is formed between the four wiring terminals or not is detected, and if yes, the line of the shielding wire core is normal; and if not, shielding the line fault of the wire core. The communication line detection method can also detect whether the shielding line in the communication line is normal. Specifically, if so, the shielding wire core is correctly connected with the wiring terminal. If not, then have the shielding sinle silk and destroy, or, the shielding sinle silk connects wrong binding post, or, shielding sinle silk has the problem with the binding post junction.
Further, the detection result of the communication line is indicated by connecting a light emitting diode between two connection terminals A1, A2 at one end of the communication line. Through connecting emitting diode between two binding post A1, A2 of communication line one end, whether can instruct communication line normally through whether emitting diode's lamp is bright, make things convenient for the measurement personnel to look over the testing result.
Further, two paths of level signals with opposite transmission directions and opposite level states are input to the same side of the light emitting diode, and if the light emitting diode is bright, the line connection is normal; if the light emitting diode is not on, the circuit is in failure. Because two paths of level signals with opposite transmission directions and opposite level states are input to the same side of the light-emitting diode, if the four wiring terminals can be conducted to form a loop, the light-emitting diode is on, and if the problems of line disconnection, short circuit, wrong connection and the like exist, the loop cannot be formed, and the light-emitting diode is not on.
The communication line is an industrial Ethernet communication line and/or a serial communication line. The detection method can detect industrial Ethernet communication lines and/or serial communication lines. The industrial Ethernet communication line comprises 4 pairs of twisted-pair wire cores of communication wires, and the industrial Ethernet communication wires are connected with the Rj45 joint. The serial communication line comprises 2 pairs or 1 pair of twisted wire cores of the communication line, and the serial communication line is connected with the RS422 or RS485 joint. The communication line detection method can detect whether various communication lines are normal or not, can also detect whether shielding lines are normal or not, and facilitates the arrangement of the communication lines in an industrial production field and the later maintenance of the communication lines.
Further, the method comprises the following steps of,
s1, connecting a light-emitting diode between two wiring terminals A1 and A2 at one end of a communication line, and connecting a diode with the same conduction direction as the light-emitting diode between two wiring terminals B1 and B2 at the other end of the communication line;
s2, outputting two paths of level signals with opposite signal states;
and S3, inputting two paths of level signals with opposite transmission directions and opposite level states to the same side of the light-emitting diode, and judging whether the communication line is normal.
In step S2, a level signal in one state may be output first, and then converted into two level signals with opposite signal states; two paths of level signals with opposite level states can also be directly output. In step S2, a clock level signal may be input, and whether each pair of cores is connected correctly is detected in sequence.
The steps S2 and S3 also comprise the following steps: and changing the frequency and/or level length of the two output level signals. The frequency and/or the level length of the two output level signals can be changed, so that a detection person can conveniently check the light emitting state of the light emitting diode during detection. In step S3, two level signals with opposite transmission directions and opposite level states are input to the same side of the light emitting diode, and whether the communication line is normal or not is determined. If the light-emitting diode is on, the circuit is normal; if the LED lamp is not on, the circuit is failed.
As shown in fig. 2 to 4, the present invention further provides a communication line detection apparatus, which adopts any one of the above communication line detection methods. Further, the communication line detection device includes:
the communication interface 1, the communication interface 1 includes a first communication interface 11 and a second communication interface 12, the first communication interface 11 and the second communication interface 12 are respectively provided with one or more pairs of terminals for connecting two ends of a communication line, and each pair of terminals of the second communication interface 12 is connected in a one-way conduction manner;
the signal indicating module 3 is arranged between each pair of the terminals and is used for indicating whether the communication line has faults or not;
the signal detection module is used for detecting whether the communication line has faults, and comprises a clock pulse generator, a first processing module and a second processing module:
the output end of the clock pulse generator is connected with the input end of the first processing module and used for outputting a clock level signal;
the output end of the first processing module is respectively connected with the input end of the second processing module and the first communication interface 11, and is used for changing the length and the frequency of the output level of the clock pulse generator and generating a plurality of paths of sequential pulse level signals;
the output end of the second processing module is connected with the first communication interface 11, and is used for changing the state of the output level of the first processing module.
The communication line is a multi-wire core communication cable with a twisted wire core. During detection, the connectors at two ends of the communication line are respectively installed in the first communication interface and the second communication interface, the wiring ends of the communication interfaces are connected with the wiring terminals of the communication connectors in a one-to-one correspondence mode, and whether the communication lines are correctly connected with the connectors or not can be detected.
According to the communication line detection device, the first communication interface 11 and the second communication interface 12 are arranged, after a communication line is connected between the communication interfaces, whether a loop is formed between four wiring ends between the first communication interface and the second communication interface or not is sequentially inspected through the cooperation of the clock pulse generator, the first processing module and the second detection module, whether the communication line is correctly connected or not is judged, whether the connection is correct or not is displayed through the signal indication module 3, and workers can conveniently inspect the line. The detection device has the advantages of simple structure and convenient operation, reduces the volume and the cost of the detection device, and improves the performance and the reliability of the detection device. The detection device can sequentially inspect each pair of wire cores and detect whether the communication line is correctly connected, and has the advantages of convenience in operation and wide application range.
The communication line includes a communication line and communication connectors, both ends of the communication line are connected to the communication connectors, respectively, and the communication connectors at both ends of the communication line are installed in the first communication interface 11 and the second communication interface 12 of the present invention, respectively. Each pair of wiring terminals of the communication interface are respectively connected with 1 pair of wiring terminals which are used for connecting the twisted pair wire core and correspond to the communication joint. Whether the connection between the twisted pair core of the communication wire and the connecting terminals connected with the two ends is correct or not is judged through sequential inspection.
As shown in fig. 3, each pair of terminals includes a terminal a and a terminal B, the output of the first processing module is connected to the terminal a of each pair of the first communication interface 11, the output of the second processing module is connected to the terminal B of the same pair of the terminals a, and the terminal a and the terminal B of each pair of the second communication interface 12 are connected in a unidirectional conductive manner.
And a signal indicating module 3 is arranged between the output end of the first processing module and each pair of terminals A of the first communication interface 11. The signal indication module 3 is a light emitting diode. Be equipped with emitting diode between every pair of wiring end A of first processing module output and first communication interface 11, after the circuit intercommunication between first communication interface 11 and second communication interface 12, emitting diode's input is connected with first processing module's output, emitting diode's output is connected with second processing module's output, because the level that second processing module output is opposite with the level state of first processing module output, when first processing module output high level, second processing module output low level, emitting diode's input is the high level this moment, the output is the low level, consequently, emitting diode lights.
The clock pulse generator is a self-flickering light emitting diode. And a current limiting resistor (not shown), wherein the clock pulse generator is connected with the current limiting resistor in series. Preferably, the signal detection device further includes a power supply (not shown in the figure), the clock pulse generator and the current-limiting resistor are connected in series with the power supply, and an output end of the power supply is connected to an input end of the first processing module.
The communication interface comprises an industrial Ethernet interface and/or a serial communication interface. Preferably, the detection device comprises an industrial ethernet interface and a serial communication interface, and the industrial ethernet interface and the serial communication interface can be alternatively used during testing.
The detection device also integrates industrial Ethernet line detection and serial communication line detection, has the advantages of simple structure, small volume, low cost and wide application range, and greatly facilitates the laying of communication lines.
As shown in fig. 3, the communication interface is provided with a shielded wire terminal C, the output end of the first processing module is connected to the shielded wire terminal C of the first communication interface 11, and the shielded wire terminal C of the second communication interface 12 is connected between any pair of terminals of the second communication interface 12. And a signal indication module 3 is arranged between the output end of the first processing module and the shielded wire terminal C of the first communication interface 11. The serial communication interface is provided with a shielded wire terminal. The shell of the communication connector of the industrial Ethernet is a metal shell, the wiring terminal of the shielding wire is the metal shell, and the shielding wire in the industrial Ethernet communication wire is connected with the metal shell. During testing, the terminals of the shielding wires of the first communication interface 11 and the second communication interface 12 are respectively connected with the metal shells at two ends of the communication line.
Further, the device also comprises a function switching module 2, wherein the function switching module 2 comprises: a test switch 21 for turning on or off detection; and the test function switch 22 is used for switching the output end of the first processing module connected with the terminal a of the first communication interface 1 to be connected with the terminal of the shielding wire of the first communication interface 1.
For switching communication line detection and shield line detection, and/or for switching on and off detection. The function switching module 2 includes a test switch 21 and a test function switch 22, and the test function switch 22 can switch and input the signal output by the first processing unit to the shielded wire terminal of the first communication interface.
The invention integrates the communication line detection modules of various communication lines and also integrates the detection module of the shielding line, so that when the communication lines are laid, the detection device is not required to be replaced, the time and the labor are saved, and the human resources are saved. The detection device has the advantages of simple structure, low cost, small volume and wide application range.
As shown in fig. 4, the communication line detection device includes a main detection device 4 and an auxiliary detection device 5, the first communication interface 11, the signal indication module 3 and the signal detection module are disposed on the main detection device 4, and the second communication interface 12 is disposed on the auxiliary detection device 5. The power supply, the current-limiting resistor and the function switching module 2 are also arranged on the main detection device 4, and a unidirectional diode which is conducted from the terminal A to the terminal B is arranged between each pair of terminals of the second communication interface 12. The signal indicating module comprises an indicating lamp. The detection device further comprises a clamping structure 6, and the main detection device 4 and the auxiliary detection device 5 are respectively provided with the clamping structures 6 matched with each other, and can be connected together through the clamping structures 6. The snap-in structure 6 may be a plug-in connection.
The detection device comprises an industrial Ethernet communication interface and a serial communication interface, and the two interfaces can share one set of signal detection module and signal indication module 3. The industrial ethernet interface can be Rj45 interface, includes four pairs of terminals, and the terminal a of the four pairs of terminals of first communication interface 11 is connected with first pilot lamp 31, second pilot lamp 32, third pilot lamp 33, fourth pilot lamp 34 respectively in proper order for instruct the circuit that the turn was examined in turn in proper connection in proper order. The shield wire terminal of the first communication interface 11 is connected to the fifth indicator light 35 for indicating whether the shield wire is wired correctly. The shielded wire terminals of the second communication interface 12 are connected between the first pair of terminals. The sixth indicator light 36 is used to indicate whether the clock pulse generator is operating.
The operation steps for detecting the industrial Ethernet line are as follows:
And 2, pressing the test switch 21, starting to supply power to the signal detection module by the power supply, and starting detection by the aid of the sixth indicator light 36 of the self-flashing light-emitting diode. And observing the state of the indicator lamps, and if the line is normal, alternately lighting the first indicator lamp 31, the second indicator lamp 32, the third indicator lamp 33 and the fourth indicator lamp 34.
And step 3, pressing the test switch 21 to detect the state of the shielding wire of the industrial Ethernet wire, and if the shielding wire is normally connected, alternately lighting the fifth indicator light 35, the second indicator light 32, the third indicator light 33 and the fourth indicator light 34.
And 4, simultaneously pressing the test switch 21 and the test function changeover switch 22, resetting the detection device and carrying out next detection.
The serial communication interface comprises an RS485 interface and an RS422 interface. The serial communication interface includes one or two pairs of terminals. The shield wire terminal of the first communication interface 11 is connected to the fifth indicator light 35 for indicating whether the shield wire is correctly wired. The shielded wire terminals of the second communication interface 12 are connected between the first pair of terminals. The sixth indicator light 36 is used to indicate whether the clock pulse generator is operating. The RS422 interface includes two pairs of terminals, and the terminals a of the two pairs of terminals of the first communication interface 11 are sequentially connected to the first indicator lamp 31 and the second indicator lamp 32, respectively, for indicating whether the wiring of the circuit inspected in turn is correct. The RS485 interface includes a pair of terminals, and a terminal a of the pair of terminals of the first communication interface 11 is connected to the first indicator lamp 31.
The operation steps for detecting the serial communication line are as follows:
And 2, pressing the test switch 21, starting to supply power to the signal detection module by the power supply, and starting detection by the aid of the sixth indicator light 36 of the self-flashing light-emitting diode. And observing the state of the light-emitting diode and judging whether the communication line is normal or not. When detecting the RS422 communication line, if the line is normal, the first indicator lamp 31 and the second indicator lamp 32 will be lighted alternately. When detecting the RS485 communication line, if the line is normal, the first indicator lamp 31 will be turned on.
And step 3, pressing the test function selector switch 22 to detect the shielded wire of the serial communication wire. When the RS485 communication line is detected, if the shielding line is normal, the fifth indicator light 35 is lighted; when detecting the RS422 communication line, if the shielded wire is normal, the fifth indicator light 35 and the second indicator light 32 are alternately turned on.
And 4, simultaneously pressing the test switch 21 and the test function changeover switch 22, resetting the detection device and carrying out next detection.
The invention uses the flicker frequency of the self-flicker light-emitting diode as the detection clock pulse, applies the first processing module and the second processing module to enable the detection device to detect each pair of lines of the communication line in turn, and simultaneously ensures the correct connection method of each line by using the one-way conductivity of the one-way diode. By setting the test function switch, the tested communication line is used as a compound line for detecting whether the communication shielding line is unobstructed.
The invention can be used for detecting industrial Ethernet lines and RS485 and RS422 serial communication lines on chemical fiber spinning fields. The detection device adopts a split design, and can detect a local communication line and a remote communication line; the detection device has the advantages of simple and practical structure, low cost, stability, reliability and convenient operation.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (4)
1. A communication line detection method, the communication line includes communication line and connects at the communication line joint of communication line both ends, the communication line has many sinle silks, the communication line connects and has the binding post of connecting with the sinle silk corresponds, its characterized in that:
connecting two wiring terminals A1 and A2 at one end of the communication line, and connecting two wiring terminals B1 and B2 at the other end of the communication line;
detecting whether a loop is formed among the wiring terminals A1, B1, B2 and A2, and judging whether the communication line is normal;
the connecting terminal A1 and the connecting terminal B1 are theoretically connected to two ends of the same wire core, and the connecting terminal A2 and the connecting terminal B2 are theoretically connected to two ends of the same wire core;
the communication line is provided with one or more pairs of twisted-pair wire cores, two connecting terminals theoretically used for connecting the same end of each pair of twisted-pair wire cores are connected, two connecting terminals theoretically used for connecting the other end of each pair of twisted-pair wire cores are connected, whether a loop is formed between the four connecting terminals is detected, and if yes, the circuit of each pair of twisted-pair wire cores is normal; if not, the line of the twisted pair wire core is in fault;
the detection result of the communication line is indicated by connecting a light-emitting diode between two wiring terminals A1 and A2 at one end of the communication line and connecting a diode with the same conduction direction as the light-emitting diode between two wiring terminals B1 and B2 at the other end of the communication line;
two paths of level signals with opposite transmission directions and opposite level states are input to the same side of the light-emitting diode, and if the light-emitting diode is bright, the line connection is normal; if the light-emitting diode is not bright, the circuit is in fault;
inputting a clock level signal, and detecting whether each pair of wire cores are connected correctly or not in sequence; firstly, outputting a level signal in one state, and then converting the level signal into two paths of level signals with opposite signal states;
the communication line is provided with a shielding wire core, the shielding wire core is connected with two wiring terminals at the same end of a double-stranded wire core, the shielding wire core is connected with two wiring terminals at the other end of the double-stranded wire core, whether a loop is formed between the four wiring terminals or not is detected, and if yes, the line of the shielding wire core is normal; and if not, shielding the line fault of the wire core.
2. The communication line detection method according to claim 1, wherein: the communication line is an industrial Ethernet communication line and/or a serial communication line.
3. The communication line detection method according to claim 1, wherein: the frequency and/or level length of the two level signals are changed.
4. A communication line inspection apparatus using the communication line inspection method according to any one of claims 1 to 3, characterized in that: comprises the steps of (a) preparing a substrate,
the communication interface comprises a first communication interface and a second communication interface, the first communication interface and the second communication interface are respectively provided with one or more pairs of wiring terminals and used for connecting two ends of a communication circuit, and each pair of wiring terminals of the second communication interface are in one-way conduction connection;
the signal indicating module is arranged between each pair of wiring terminals and is used for indicating whether the communication circuit has faults or not;
the signal detection module is used for detecting whether the communication line has faults, and comprises a clock pulse generator, a first processing module and a second processing module:
the output end of the clock pulse generator is connected with the input end of the first processing module and used for outputting a clock level signal;
the output end of the first processing module is respectively connected with the input end of the second processing module and the first communication interface and is used for changing the length and the frequency of the output level of the clock pulse generator and generating a plurality of paths of sequential pulse level signals;
the output end of the second processing module is connected with the first communication interface and used for changing the state of the output level of the first processing module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010229353.4A CN112924893B (en) | 2020-03-27 | 2020-03-27 | Communication line detection method and communication line detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010229353.4A CN112924893B (en) | 2020-03-27 | 2020-03-27 | Communication line detection method and communication line detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112924893A CN112924893A (en) | 2021-06-08 |
| CN112924893B true CN112924893B (en) | 2023-02-28 |
Family
ID=76163112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010229353.4A Active CN112924893B (en) | 2020-03-27 | 2020-03-27 | Communication line detection method and communication line detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112924893B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114172540B (en) * | 2022-02-14 | 2022-05-17 | 北京国科天迅科技有限公司 | Port detection circuit and method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4418312A (en) * | 1981-10-23 | 1983-11-29 | Bell Telephone Laboratories, Incorporated | Apparatus for testing multi-conductor cables |
| CN1673763A (en) * | 2004-03-24 | 2005-09-28 | 联想(北京)有限公司 | Multifunction tester for electric cable |
| CN102998587A (en) * | 2012-12-07 | 2013-03-27 | 保定供电公司 | Talkback type cable core instrument |
| CN202929148U (en) * | 2012-12-07 | 2013-05-08 | 保定供电公司 | Intercom type cable core alignment instrument |
| CN203164348U (en) * | 2013-03-06 | 2013-08-28 | 邹卫国 | Cable pairing device |
| CN203217027U (en) * | 2013-04-27 | 2013-09-25 | 神华集团有限责任公司 | Cable correcting device |
| CN206960587U (en) * | 2017-07-18 | 2018-02-02 | 保定赢泰电力工程有限公司 | Cable core detection means |
| CN109541373A (en) * | 2018-11-27 | 2019-03-29 | 彭雪海 | A kind of quick twisted pair wire on off test instrument |
-
2020
- 2020-03-27 CN CN202010229353.4A patent/CN112924893B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4418312A (en) * | 1981-10-23 | 1983-11-29 | Bell Telephone Laboratories, Incorporated | Apparatus for testing multi-conductor cables |
| CN1673763A (en) * | 2004-03-24 | 2005-09-28 | 联想(北京)有限公司 | Multifunction tester for electric cable |
| CN102998587A (en) * | 2012-12-07 | 2013-03-27 | 保定供电公司 | Talkback type cable core instrument |
| CN202929148U (en) * | 2012-12-07 | 2013-05-08 | 保定供电公司 | Intercom type cable core alignment instrument |
| CN203164348U (en) * | 2013-03-06 | 2013-08-28 | 邹卫国 | Cable pairing device |
| CN203217027U (en) * | 2013-04-27 | 2013-09-25 | 神华集团有限责任公司 | Cable correcting device |
| CN206960587U (en) * | 2017-07-18 | 2018-02-02 | 保定赢泰电力工程有限公司 | Cable core detection means |
| CN109541373A (en) * | 2018-11-27 | 2019-03-29 | 彭雪海 | A kind of quick twisted pair wire on off test instrument |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112924893A (en) | 2021-06-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102650670B (en) | Multi-channel cable aligner | |
| CN101769978B (en) | Open circuit/short circuit detector of signal wire | |
| CN108802552A (en) | A kind of cable tester and its method of calibration | |
| CN112924893B (en) | Communication line detection method and communication line detection device | |
| CN108152650A (en) | The automatic line inspection system of multicore cable | |
| CN107664730A (en) | A kind of distribution network automated end terminal connecting line detection device | |
| CN112578197B (en) | Automatic testing system and method for secondary circuit of transformer substation | |
| CN103760457A (en) | Cable checking circuit structure and common-line-free cable checking method | |
| CN212723280U (en) | Cable tester transfer box | |
| CN205958686U (en) | Wiring detection circuit | |
| CN101097229A (en) | Detecting device | |
| CN210867746U (en) | Communication line detection device | |
| CN218585226U (en) | Shelter power station switch board detection device | |
| CN208937665U (en) | Transmit Digital Distribution Frame tester | |
| CN207832928U (en) | Serial line interface harness failure detector | |
| CN219105076U (en) | Portable cable on-off detection circuit and detector using single-wire communication | |
| CN211786041U (en) | Wire connection testing device | |
| CN221227536U (en) | Detection equipment for logging instrument bus | |
| CN216900775U (en) | Portable low-cost multi-point insulation detection tool | |
| CN213581309U (en) | Tool for detecting internal network cable of explosion-proof frequency converter | |
| CN201397370Y (en) | A/V detecting wire | |
| CN213581310U (en) | Low-voltage line calibration device | |
| CN114614916B (en) | Communication equipment production and test system with PoE function and production and test method | |
| CN219799640U (en) | Cable detection device | |
| CN219328858U (en) | Detector for rapidly detecting SMEMA signals of machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |