CN112415335A - Line detection device - Google Patents
Line detection device Download PDFInfo
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- CN112415335A CN112415335A CN202011388290.3A CN202011388290A CN112415335A CN 112415335 A CN112415335 A CN 112415335A CN 202011388290 A CN202011388290 A CN 202011388290A CN 112415335 A CN112415335 A CN 112415335A
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- line
- multiplexer
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- detection signal
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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
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/085—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution lines, e.g. overhead
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/58—Testing of lines, cables or conductors
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The invention discloses a line detection device. The device comprises a host, a multiplexer, a slave and a display unit; the host is connected with the first end of the line to be detected and used for providing a detection signal for the line to be detected; the input end of the multiplexer is connected with the second end of the line to be detected and is used for receiving the detection signal of the line to be detected and outputting the detection signal transmitted by the line to be detected corresponding to the gating channel in a time-sharing manner; the output end of the multiplexer is connected with the slave, and the slave is used for selecting the gating channel of the multiplexer and outputting a detection signal corresponding to the gating channel; and the display unit is connected with the slave machine and used for receiving and displaying the detection signal corresponding to the gating channel. The invention can enable the line operation and maintenance personnel to control the multiplexer gating channel through the slave machine, realizes that the line operation and maintenance personnel simultaneously detect a plurality of lines to be detected by a single person, can quickly check the line butt joint, the line on-off and other checking works according to the detection signal displayed by the display unit, and effectively improves the line operation and maintenance efficiency.
Description
Technical Field
The embodiment of the invention relates to the technical field of line detection, in particular to a line detection device.
Background
With the rapid development of social economy, the monitoring and data measurement requirements of the power transmission line on various indexes are higher and higher, so that various measurement devices are more and more arranged on the power transmission line, the circuit of the measurement device is complicated and disordered, and the checking work of the measurement operation and maintenance personnel on the circuit of the measurement device, such as wiring, on-off and the like, is more and more heavy and tedious.
At present, measurement operation and maintenance personnel of a power transmission line adopt a volt-ampere meter to check the wiring, the on-off and the like of the measurement line. When the metering line is buried, the line is long or the lines are mixed, the metering operation and maintenance personnel of the power transmission line cannot directly distinguish the line butt joint condition, and the metering operation and maintenance personnel of a plurality of power transmission lines are required to finish the single-point line butt joint, line on-off and other inspection works of the metering line together. At this time, the checking processes of line butt joint, on-off and the like of the metering line are very complicated and easy to make mistakes, a large amount of human resources are consumed, and the operation efficiency is low.
Disclosure of Invention
The invention provides a line detection device which can quickly check the wiring of a metering line, quickly detect the on-off of the metering line and improve the operation and maintenance operation efficiency of the metering line.
The embodiment of the invention provides a line detection device, which comprises a host, a multiplexer, a slave and a display unit, wherein the host is connected with the multiplexer;
the host is connected with the first end of the line to be detected and used for providing a detection signal for the line to be detected; the input end of the multiplexer is connected with the second end of the line to be detected and is used for receiving the detection signal of the line to be detected and outputting the detection signal transmitted by the line to be detected corresponding to the gating channel in a time-sharing manner; the output end of the multiplexer is connected with the slave, and the slave is used for selecting the gating channel of the multiplexer and outputting a detection signal corresponding to the gating channel; and the display unit is connected with the slave machine and used for receiving and displaying the detection signal corresponding to the gating channel.
Optionally, the host includes a plurality of signal transmitting ports, and each signal transmitting port is connected to a line to be tested.
Optionally, the detection signal output by each signal transmitting port is different.
Optionally, the multiplexer includes a plurality of signal receiving ports, and each signal receiving port is connected to a line to be tested.
Optionally, the output end of the multiplexer includes a detection signal output end and a digital signal input end, the detection signal output end is connected with the detection signal input end of the slave, the digital signal input end is connected with the digital signal output end of the slave, and the multiplexer is configured to gate the channel according to the digital signal provided by the digital signal output end and output the corresponding detection signal.
Optionally, the line detection apparatus further includes an interface; the interface is connected in series between the multiplexer and the slave.
Optionally, the interface is a serial interface.
Optionally, the line detection device further includes a power-off detection module, and the power-off detection module is disposed at the line to be detected and is used for detecting the on-off state of the line to be detected.
Optionally, the power failure detection module includes a coil for inducing a magnetic field change of the line to be tested.
Optionally, the power failure detection module further comprises a signal alarm unit, and the signal alarm unit is used for alarming when the circuit to be tested is broken.
According to the technical scheme of the embodiment of the invention, the host sends the detection signal to the line to be detected, the multiplexer provides different signal receiving channels for a plurality of lines to be detected which simultaneously transmit the detection signal to be transmitted to the slave, and the slave can control the on-off of the information transmission channel of the multiplexer, selectively open the information transmission channel of the multiplexer and output the detection signal correspondingly transmitted by the channel. And then the slave transmits the detection signal transmitted by the information transmission channel of the selected multiplexer to the display unit for displaying. The line operation and maintenance personnel can simultaneously detect a plurality of lines to be detected by a single person through the gating channel of the slave machine control multiplexer, and can clearly determine the signal input end and the signal output end of the line to be detected according to the detection signal transmitted by the display unit, so that whether the wiring of the input and output ports of the mixed circuit or the longer circuit is correct can be quickly determined. In addition, if the display unit does not display the detection signal output by a certain line to be detected, it is indicated that the line to be detected is damaged, and line operation and maintenance personnel can find and maintain the line in time, perform troubleshooting operation in time, and improve line operation and maintenance efficiency.
Drawings
Fig. 1 is a schematic structural diagram of a circuit detection device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another line detection apparatus according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another line detection apparatus according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of another line detection apparatus according to an embodiment of the present invention.
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. 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.
An embodiment of the present invention provides a schematic structural diagram of a line detection device, and fig. 1 is a schematic structural diagram of a line detection device provided in an embodiment of the present invention. As shown in fig. 1, the line detection apparatus includes a master 110, a multiplexer 120, a slave 130, and a display unit 140; the host 110 is connected to a first end of the line 150 to be tested, and is configured to provide a detection signal for the line 150 to be tested; the input end of the multiplexer 120 is connected to the second end of the line 150 to be tested, and is configured to receive the detection signal of the line 150 to be tested, and output the detection signal transmitted by the line 150 to be tested corresponding to the gating channel in a time-sharing manner; the output end of the multiplexer 120 is connected to the slave 130, and the slave 130 is used for selecting the gating channel of the multiplexer 120 and outputting a detection signal corresponding to the gating channel; the display unit 140 is connected to the slave 130, and is configured to receive the detection signal corresponding to the gated channel and display the detection signal.
The host 110 may transmit a detection signal, wherein the detection signal may be an analog signal. The line under test 150 is used for transmitting the detection signal transmitted by the host 110. After the host 110 is connected to the first end of the line 150 to be tested, the detection signal transmitted by the host 110 is transmitted from the first end connected to the line 150 to be tested to the second end of the line 150 to be tested. The input terminal of the multiplexer 120 is connected to the second terminal of the line under test 150, and can receive the detection signal transmitted from the second terminal of the line under test 150. Because the multiplexer 120 can output the detection signal transmitted by the second end of the to-be-detected line 150, which is gated by the input end and correspondingly connected with the second end of the to-be-detected line, in a time-sharing manner, after the output end of the multiplexer 120 is connected with the slave 130, the slave 130 can control the on-off of the information transmission channel of the multiplexer 120, and further can selectively open the information transmission channel of the multiplexer 120 and output the detection signal correspondingly transmitted by the channel, so that a line operation and maintenance worker can simultaneously detect a plurality of to-be-detected lines 150 by one person, the complexity of manual operation is reduced, and the line operation and maintenance efficiency. The display unit 140 is connected to the slave 130, and displays the detection signal transmitted from the slave 130, the channel information gated by the slave 130 controlling the multiplexer 120, the serial number of the line 150 to be tested, and other data on the display unit 140, wherein the display unit 140 may be a liquid crystal display panel or an organic light emitting diode display panel. The line operation and maintenance personnel can clearly determine the signal input end and the signal output end of the line 150 to be detected according to the detection signal displayed by the display unit 140, and can quickly determine whether the wiring of the input and output ports of the hybrid circuit or the longer circuit is correct. In addition, if the display unit 140 does not display the detection signal output by a certain line 150 to be detected, it indicates that the line 150 to be detected is damaged, and the line operation and maintenance personnel can find and maintain the line in time to perform troubleshooting operation, thereby improving the line operation and maintenance efficiency.
Fig. 2 is a schematic structural diagram of another line detection apparatus according to an embodiment of the present invention. As shown in fig. 2, the host 110 includes a plurality of signal transmitting ports, and each signal transmitting port is connected to a line under test 150.
For example, the host 110 may include 10 signal transmitting ports, which are No. 2 port, No. 3 port, No. 4 port, No. 5 port, No. 6 port, No. 7 port, No. 8 port, No. 9 port, No. 10 port and No. 11 port. Each signal transmitting port is connected with a line 150 to be tested, so that a plurality of signal transmitting ports can simultaneously transmit detection signals to the correspondingly connected line 150 to be tested, the detection signals can be transmitted at the same time on the line 150 to be tested, the line operation and maintenance personnel can conveniently check the on-off of the line 150 to be tested at the same time, and the efficiency of the line operation and maintenance operation is improved.
It should be noted that the above process is only an example to show that the host 110 includes 10 signal transmitting ports, and in other embodiments, the host 110 may further include other numbers of signal transmitting ports to meet different requirements in line detection.
Optionally, the detection signal output by each signal transmitting port is different.
The host comprises a plurality of signal transmitting ports, and each signal transmitting port is connected with a line to be tested. Because the detection signals output by each signal transmitting port are different, the detection signals transmitted by each line to be detected are different, and then the input port and the output port of the line to be detected can be determined according to the detection signals transmitted by the line to be detected, so that line operation and maintenance personnel can quickly confirm whether the line to be detected is correctly connected. For example: the host sends signals to the four signal transmitting ports, and the No. 2 signal transmitting port sends an 'A' signal to the first end of the No. 2 to-be-detected line connected with the No. 2 signal transmitting port; the No. 3 signal transmitting port transmits a 'B' signal to the first end of the No. 3 line to be tested connected with the No. 3 signal transmitting port; the No. 4 signal transmitting port transmits a 'C' signal to the first end of the No. 4 line to be tested connected with the No. 4 signal transmitting port; the No. 5 signal transmitting port transmits a 'D' signal to the first end of the No. 5 line to be tested connected with the No. 5 signal transmitting port. Then, the output signal of the 'A' is the second end of the No. 2 line to be tested; the output signal of the B is the second end of the No. 3 line to be tested; the output 'C' signal is the second end of the No. 4 line to be tested; the output signal of the D is the second end of the No. 5 line to be tested; in addition, operation and maintenance personnel can also rapidly determine the on-off condition of each line to be tested according to the obtained transmission signals. For example: the host sends signals to the four signal transmitting ports, namely an 'A' signal sent by the No. 2 signal transmitting port, a 'B' signal sent by the No. 3 signal transmitting port, a 'C' signal sent by the No. 4 signal transmitting port and a 'D' signal sent by the No. 5 signal transmitting port. The signal receiving end only receives the signal A, the signal B and the signal D, and the circuit fault occurs in the circuit to be tested connected with the signal transmitting port No. 4 of the host. Each signal transmitting port outputs different detection signals, so that the line operation and maintenance personnel can conveniently check the connection and on-off states of a plurality of lines 150 to be detected at the same time, and the operation and maintenance efficiency of the operation and maintenance personnel is effectively improved.
Alternatively, with continued reference to fig. 2, the multiplexer 120 includes a plurality of signal receiving ports, each of which is connected to a line under test 150.
The multiplexer 120 includes a plurality of signal receiving ports. The number of signal receiving ports of the multiplexer 120 is the same as the number of signal transmitting ports of the host 110. For example, when the number of signal transmitting ports of the host 110 is 10, the number of signal receiving ports of the multiplexer 120 is 10 at the same time, and may be a C0 port, a C1 port, a C2 port, a C3 port, a C4 port, a C5 port, a C6 port, a C7 port, a C8 port, and a C9 port, respectively. Each signal receiving port is connected to a line under test 150, and is configured to correspondingly receive a detection signal transmitted from each signal transmitting port of the host 110 to the line under test 150. The state of many circuit 150 that await measuring is examined simultaneously to the single fortune dimension personnel of being convenient for, has improved fortune dimension personnel's fortune effectively and has examined the operating efficiency, has alleviateed the circuit fortune dimension operation of circuit fortune dimension personnel.
Optionally, with continued reference to fig. 2, the output terminal of the multiplexer 120 includes a detection signal output terminal SICn and a digital signal input terminal, the detection signal output terminal SICn is connected to the detection signal input terminal of the slave 130, the digital signal input terminal is connected to the digital signal output terminal of the slave 130, and the multiplexer 120 is configured to gate a channel according to the digital signal provided by the digital signal output terminal and output a corresponding detection signal.
The outputs of the multiplexer 120 comprise a detection signal output SICn and a digital signal input. Illustratively, the host 110 includes 10 signal transmitting ports, the number of the signal receiving ports of the multiplexer 120 is the same as the number of the signal transmitting ports of the host 110, four ports may be provided at the digital signal input terminal of the multiplexer 120, which may be S0, S1, S2, S3, respectively, for ensuring that the number of the digital signal input terminal may select at least 10 different strobe channels, and the number of the digital signal output ports of the slave 130 is four at the same time, which may be a port number 3, a port number 4, a port number 5, and a port number 6, respectively. The detection signal input terminal of the slave 130 is disposed opposite to the detection signal output terminal SICn of the multiplexer 120, and the detection signal input terminal of the slave 130 may be the number 2 port. The detection signal output terminal SICn of the multiplexer 120 is connected to the detection signal input terminal of the slave 130, so that the detection signal received by the multiplexer 120 can be efficiently transmitted to the detection signal input terminal of the slave 130 through the detection signal output terminal SICn. The digital signal input end of the multiplexer 120 is connected to the digital signal output end of the slave 130, the slave 130 controls the multiplexer 120 to selectively open the information transmission channel of the multiplexer 120 by sending a digital signal to the digital signal input end of the multiplexer 120, and the detection signal output end SICn of the multiplexer 120 outputs an analog detection signal correspondingly transmitted by the channel to the detection signal input end of the slave 130. The line operation and maintenance personnel can simultaneously detect a plurality of lines to be detected 150 by a single person by controlling the multiplexer 120 to gate the channel through the slave 130, thereby reducing the complexity of manual operation and effectively improving the line operation and maintenance efficiency.
It should be noted that the above process only exemplarily shows that the host 110 includes 10 signal transmitting ports, the number of the signal receiving ports of the multiplexer 120 is the same as the number of the signal transmitting ports of the host 110, and four ports may be provided at the digital signal input terminal of the multiplexer 120. In other embodiments, the host 110 may further include other numbers of signal transmitting ports, for example, the host 110 includes 20 signal transmitting ports, the number of the signal receiving ports of the multiplexer 120 is the same as the number of the signal transmitting ports of the host 110, the digital signal input end of the multiplexer 120 is provided with four ports, and at most, 16 gating channels can be selected, at this time, the number of the digital signal input ports of the multiplexer 120 does not meet the requirement of line detection, and the number of the digital signal input ports of the multiplexer 120 should be adaptively adjusted to meet different requirements of line detection.
Fig. 3 is a schematic structural diagram of another line detection apparatus according to an embodiment of the present invention. As shown in fig. 3, the line detection apparatus further includes an interface 160; interface 160 is connected in series between multiplexer 120 and slave 130.
The interface 160 is connected in series between the multiplexer 120 and the slave 130, so that the problem that the slave 130 receives the detection signal due to the non-uniform size of the communication line can be solved. The interface 160 is connected in series between the multiplexer 120 and the slave 130, so that the connection is simple and convenient, and the quick communication between the multiplexer 120 and the slave 130 can be realized.
Optionally, the interface is a serial interface.
Wherein, the serial interface can be an RS-232 interface. The communication line is simple, and bidirectional communication can be realized by only one pair of transmission lines (the telephone line can be directly used as the transmission line), so that the cost is greatly reduced, and the communication line is particularly suitable for remote communication.
Fig. 4 is a schematic structural diagram of another line detection apparatus according to an embodiment of the present invention. As shown in fig. 4, the line detection apparatus further includes a power-off detection module 170, where the power-off detection module 170 is disposed at the line 150 to be detected and is used for detecting the on/off of the line 150 to be detected.
The power-off detection module 170 is disposed at the line 150 to be detected and is configured to detect on/off of the line 150 to be detected. When the line 150 to be tested is disconnected, the current of the line 150 to be tested changes to cause the electromagnetic field around the line 150 to be tested to change, and the power-off detection module 170 detects the electromagnetic field around the line 150 to be tested, so as to determine the state of the line 150 to be tested.
Optionally, the power failure detection module includes a coil for inducing a magnetic field change of the line to be tested.
The coil in the circuit is referred to as an induction coil. The insulated pipe is characterized in that the wires are wound one by one and are insulated from each other, and the insulated pipe can be hollow and can also comprise an iron core or a magnetic powder core, which is called an inductor for short. When the magnetic field passing through the closed circuit is changed, according to the theory of electromagnetic field, an electric field is generated around the changed magnetic field, and the electric field makes the free electrons in the conductor directionally move to form current, and the current generated in this condition is called induced current or induced current. Therefore, when the circuit to be tested is disconnected, the current of the circuit to be tested changes to cause the electromagnetic field around the circuit to be tested to change, and then the coil arranged in the power-off module at the position of the circuit to be tested can sense the electromagnetic field of the circuit to be tested to change.
Optionally, the power failure detection module further comprises a signal alarm unit, and the signal alarm unit is used for alarming when the circuit to be tested is broken.
The alarm unit may be a light emitting diode, a buzzer, or the like, but is not limited thereto. When the circuit to be tested is broken, the current of the circuit to be tested changes to cause the electromagnetic field around the circuit to be tested to change, and the magnetic flux of the coil in the power-off module arranged at the position of the circuit to be tested changes, so that free electrons in the conductor directionally move to form induced current, and induced electromotive force is generated. The induced electromotive force supplies power for the signal alarm unit, and then sends the warning for circuit operation and maintenance personnel, in time carries out circuit maintenance.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A line detection device is characterized by comprising a host, a multiplexer, a slave and a display unit;
the host is connected with the first end of the line to be detected and used for providing a detection signal for the line to be detected; the input end of the multiplexer is connected with the second end of the line to be detected and is used for receiving the detection signal of the line to be detected and outputting the detection signal transmitted by the line to be detected corresponding to the gating channel in a time-sharing manner; the output end of the multiplexer is connected with the slave, and the slave is used for selecting the gating channel of the multiplexer and outputting a detection signal corresponding to the gating channel; and the display unit is connected with the slave machine and used for receiving and displaying the detection signal corresponding to the gating channel.
2. The line inspection device of claim 1, wherein the host comprises a plurality of signal emitting ports, and each of the signal emitting ports is connected to one of the lines under inspection.
3. The line detecting device according to claim 2, wherein the detection signal outputted from each of the signal transmitting ports is different.
4. The line inspection device of claim 2, wherein the multiplexer comprises a plurality of signal receiving ports, each of the signal receiving ports being connected to one of the lines under test.
5. The line detecting device according to claim 1, wherein the output of the multiplexer comprises a detection signal output terminal and a digital signal input terminal, the detection signal output terminal is connected to the detection signal input terminal of the slave, the digital signal input terminal is connected to the digital signal output terminal of the slave, and the multiplexer is configured to gate the channel according to the digital signal provided by the digital signal output terminal and output the corresponding detection signal.
6. The line inspection device of claim 1, further comprising an interface; the interface is connected in series between the multiplexer and the slave.
7. The line detection device of claim 6, wherein the interface is a serial interface.
8. The line detection device according to claim 1, further comprising a power-off detection module, disposed at the line under test, for detecting on/off of the line under test.
9. The outage detection module according to claim 8, characterized in that the outage detection module comprises a coil for inducing a change in a magnetic field of the line under test.
10. The outage detection module according to claim 8, further comprising a signal alarm unit for alarming when the line under test is open.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011388290.3A CN112415335A (en) | 2020-12-01 | 2020-12-01 | Line detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011388290.3A CN112415335A (en) | 2020-12-01 | 2020-12-01 | Line detection device |
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| CN112415335A true CN112415335A (en) | 2021-02-26 |
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| CN202011388290.3A Pending CN112415335A (en) | 2020-12-01 | 2020-12-01 | Line detection device |
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| CN111880120A (en) * | 2020-08-07 | 2020-11-03 | 成都微能铁信科技有限公司 | CIR multi-core control cable analysis recorder |
| CN111983389A (en) * | 2020-08-28 | 2020-11-24 | 国网河南省电力公司濮阳供电公司 | Device for detecting alignment and fault of multi-core cable |
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| JPS57113374A (en) * | 1980-12-29 | 1982-07-14 | Fujitsu Ltd | Checking method for continuity of cable |
| CN103983884A (en) * | 2014-04-28 | 2014-08-13 | 北京世纪东方国铁科技股份有限公司 | Multi-core cable testing system and method |
| CN204515055U (en) * | 2015-03-13 | 2015-07-29 | 长沙敏特电力技术有限公司 | Ammeter is visited one house after another wiring testing device |
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Application publication date: 20210226 |