CN114089116A - Cable fault detection device and line fault detection method - Google Patents
Cable fault detection device and line fault detection method Download PDFInfo
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- CN114089116A CN114089116A CN202111390225.9A CN202111390225A CN114089116A CN 114089116 A CN114089116 A CN 114089116A CN 202111390225 A CN202111390225 A CN 202111390225A CN 114089116 A CN114089116 A CN 114089116A
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- 238000001514 detection method Methods 0.000 title claims abstract description 60
- 238000005070 sampling Methods 0.000 claims abstract description 131
- 238000010586 diagram Methods 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
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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
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Abstract
The application discloses a cable fault detection device and a line fault detection method, wherein the cable fault detection device comprises a first interface and a second interface which are respectively electrically connected with two ends of a cable to be detected; the first voltage sampling circuit is electrically connected with the first interface; the second voltage sampling circuit is electrically connected with the second interface; the detection module is respectively electrically connected with the first voltage sampling circuit and the second voltage sampling circuit and is used for determining whether the cable to be detected has a fault or not according to the sampling voltages of the first voltage sampling circuit and the second voltage sampling circuit; and the indicating module is electrically connected with the detecting module and used for indicating whether the cable to be detected has a fault or not according to the determination result of the detecting module. The scheme is simple and convenient to operate, the efficiency of cable fault detection is improved, and then the overhauling progress is accelerated.
Description
Technical Field
The invention relates to the technical field of cable detection, in particular to a cable fault detection device and a line fault detection method.
Background
With the advance of industrialization process, more and more industries adopt industrial robots to operate. In order to achieve an accurate control of an industrial robot, the industrial robot has a large number of sensors/encoders and the like and is connected by corresponding cables. When the cable breaks down, generally use the universal meter to measure the investigation by root one by one at present through the manual work, the investigation degree of difficulty is big, and work efficiency is low, influences the maintenance progress.
Disclosure of Invention
The application expects to provide a cable fault detection device and a line fault detection method for improving the efficiency of cable fault detection and further accelerating the maintenance progress.
In a first aspect, the present invention provides a cable fault detection apparatus, comprising:
the first interface and the second interface are used for being electrically connected with two ends of the cable to be detected respectively;
the first voltage sampling circuit is electrically connected with the first interface;
the second voltage sampling circuit is electrically connected with the second interface;
the detection module is respectively electrically connected with the first voltage sampling circuit and the second voltage sampling circuit and is used for determining whether the cable to be detected has a fault or not according to the sampling voltages of the first voltage sampling circuit and the second voltage sampling circuit;
and the indicating module is electrically connected with the detecting module and used for indicating whether the cable to be detected has a fault or not according to the determination result of the detecting module.
As an implementation manner, the device comprises more than two first interfaces which are connected in parallel, and each first interface is different.
As an implementation manner, the system comprises more than two second interfaces which are connected in parallel, and each second interface is different.
As an implementation manner, the first voltage sampling circuit includes a first sampling resistor, a first end of the first sampling resistor is electrically connected to the first interface, and a second end of the first sampling resistor is electrically connected to the positive electrode of the dc power supply.
As an implementation manner, the second voltage sampling circuit includes a second sampling resistor and a third sampling resistor, a first end of the second sampling resistor is electrically connected to the first interface and the negative electrode of the dc power supply, a second end of the second sampling resistor is electrically connected to a first end of the third sampling resistor, and a second end of the third sampling resistor is electrically connected to the positive electrode of the dc power supply.
As an implementation manner, the detection module includes a comparator, an inverting input terminal of the comparator is electrically connected to the first terminal of the first sampling resistor, and a non-inverting input terminal of the comparator is electrically connected to the second terminal of the second sampling resistor.
As an implementation manner, the indication module includes a light emitting diode, a positive terminal of the light emitting diode is electrically connected with the output terminal of the comparator, and a negative terminal of the light emitting diode is electrically connected with the negative terminal of the dc power supply.
In a second aspect, the present invention provides a line fault detection method using the cable fault detection apparatus, including:
when two ends of a cable to be detected are electrically connected to the first interface and the second interface respectively, sampling voltages of the first voltage sampling circuit and the second voltage sampling circuit are obtained respectively, and whether the cable to be detected has a fault or not is determined according to the heights of the two sampling voltages;
and indicating whether the cable to be detected has a fault or not according to the determination result of the detection module.
As an implementation manner, if the sampling voltage of the first voltage sampling circuit is higher than the sampling voltage of the second voltage sampling circuit, the cable to be detected fails, otherwise, the cable to be detected has no fault.
According to the scheme, only two ends of the cable to be detected are connected to the first interface and the second interface respectively, and the detection module can determine whether the cable to be detected has a fault according to the sampling voltages of the first voltage sampling circuit and the second voltage sampling circuit; and whether the cable to be detected has a fault or not is indicated through the indicating module. The cable fault detection device is simple and convenient to operate, the efficiency of cable fault detection is improved, and the overhauling progress is accelerated.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
fig. 1 is a schematic circuit diagram of a cable fault detection apparatus according to an embodiment of the present invention;
fig. 2 is a schematic circuit diagram of a cable fault detection apparatus according to another embodiment of the present invention;
fig. 3 is a perspective view of a cable fault detection apparatus provided in an embodiment of the present invention.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1, an embodiment of the present invention provides a cable fault detection apparatus, including:
the first interface 1 and the second interface 6 are used for being electrically connected with two ends of a cable 8 to be detected respectively; the first interface 1 and the second interface 6 may adopt standard interfaces, such as, but not limited to, RJ11, RJ45, USB interfaces, etc., and here, the first interface 1 and the second interface 6 are only examples, but not limited thereto, as long as they can be plugged with connectors at two ends of the cable 8 to be detected to make corresponding electrical connections. The connection efficiency of the cable 8 to be detected and the first interface 1 and the second interface 6 can be improved through the insertion connection mode, and the connection convenience can be improved.
A first voltage sampling circuit 2 electrically connected to the first interface 1;
a second voltage sampling circuit 5 electrically connected to the second interface 6;
the detection module 3 is electrically connected with the first voltage sampling circuit 2 and the second voltage sampling circuit 5 respectively, and is configured to determine whether the cable 8 to be detected has a fault according to the sampling voltages of the first voltage sampling circuit 2 and the second voltage sampling circuit 5; whether the cable 8 to be detected has a fault or not, namely whether the cable 8 to be detected has an open circuit or not, affects the sampling voltages of the first voltage sampling circuit 2 and the second voltage sampling circuit 5, so that the sampling voltages are changed correspondingly. For example, in some embodiments, it may be that the sampling voltage of the first voltage sampling circuit 2 is higher than the sampling voltage of the second voltage sampling circuit 5, then the cable 8 to be detected fails; certainly, in other implementation manners, the sampling voltage of the first voltage sampling circuit 2 may also be lower than the sampling voltage of the second voltage sampling circuit 5, and the cable 8 to be detected has a fault; the specific adopted method is to determine whether the line to be overhauled has a fault or not, and is determined by the specific adopted first voltage sampling circuit 2 and second voltage sampling circuit 5.
And the indicating module 4 is electrically connected with the detecting module 3 and used for indicating whether the cable 8 to be detected has a fault or not according to the determination result of the detecting module 3. The indication module 4 is, for example and without limitation, a display screen, a light emitting diode T2, a speaker, and the like, and may indicate whether the cable 8 to be detected is faulty or not by means of display and/or sound broadcast. As will be described later, the indicating module 4 may employ a light emitting diode T2, and may select a light emitting diode T2 with different colors according to the content indicated by the light emitting diode T3578, and may select a light emitting diode T2 with green light if the light emitting diode T2 is lit for indicating that the cable 8 to be detected is not faulty, and may select a light emitting diode T2 with red light if the light emitting diode T2 is lit for indicating that the cable 8 to be detected is faulty.
According to the scheme, only two ends of the cable 8 to be detected are connected to the first interface 1 and the second interface 6 respectively, and the detection module 3 can determine whether the cable 8 to be detected has a fault according to the sampling voltages of the first voltage sampling circuit 2 and the second voltage sampling circuit 5; and whether the cable 8 to be detected has a fault or not is indicated through the indicating module 4. The cable fault detection device is simple and convenient to operate, the efficiency of cable fault detection is improved, and the overhauling progress is accelerated.
As an implementation manner, in order to improve the applicability of the cable fault detection device, the cable fault detection device includes more than two first interfaces 1 connected in parallel, and each first interface 1 is different. Different joints at two ends of the cable 8 to be detected have different conditions, and the joints at two ends of the cable 8 to be detected can be adapted to different joints by arranging more than two different first interfaces 1.
As an implementation manner, in order to improve the applicability of the cable fault detection apparatus, the cable fault detection apparatus includes two or more second interfaces 6 connected in parallel with each other, and each of the second interfaces 6 is different. Different joints at two ends of the cable 8 to be detected have different conditions, and the joints at two ends of the cable 8 to be detected can be adapted to different joints by arranging more than two different first interfaces 1.
In an implementation manner, as shown in fig. 2, the first voltage sampling circuit 2 includes a first sampling resistor R1, a first end of the first sampling resistor R1 is electrically connected to the first interface 1, and a second end of the first sampling resistor R1 is electrically connected to the positive electrode of the dc power supply 7.
In an implementation manner, the second voltage sampling circuit 5 includes a second sampling resistor R2 and a third sampling resistor R3, a first end of the second sampling resistor R2 is electrically connected to the first interface 1 and the negative electrode of the dc power supply 7, a second end of the second sampling resistor R2 is electrically connected to a first end of the third sampling resistor R3, and a second end of the third sampling resistor R3 is electrically connected to the positive electrode of the dc power supply 7.
In an implementation manner, the detection module 3 includes a comparator T1, an inverting input terminal of the comparator T1 is electrically connected to a first terminal of the first sampling resistor R1, and a non-inverting input terminal of the comparator T1 is electrically connected to a second terminal of the second sampling resistor R2.
In an implementation manner, the indication module 4 includes a light emitting diode T2, a positive terminal of the light emitting diode T2 is electrically connected to the output terminal of the comparator T1, and a negative terminal of the light emitting diode T2 is electrically connected to the negative terminal of the dc power supply 7.
In the above scheme, when the fault detection of the cable 8 to be detected is performed, two ends of the cable 8 to be detected are electrically connected to the first interface 1 and the second interface 6 respectively, and if the cable 8 to be detected has no fault, the inverting input of the comparator T1, which is directly connected to the negative pole of the dc power supply 7, is pulled low, the inverting input of the comparator T1, the non-inverting input terminal + of the comparator T1 is connected between the second sampling resistor R2 and the third sampling resistor R3, and the potential of the non-inverting input terminal of the comparator T1 is equivalent to the voltage division of the second sampling resistor R2, at this time, the potential of the non-inverting input terminal + of the comparator T1 is higher than that of the inverting input terminal-, the comparator T1 outputs a high level, thereby driving the light emitting diode T2 to light up, and the light emitting diode T2 adopts the light emitting diode T2 which emits green light, which shows that the cable 8 to be detected has no fault. If the cable 8 to be detected has a fault, that is, the cable 8 to be detected is open, the inverting input terminal-of the comparator T1 is only connected to the first end of the first sampling resistor R1, at this time, the potential of the first end of the first sampling resistor R1 is equal to the positive voltage of the dc power supply 7, and if the dc power supply 7 with 5V is adopted, the potential of the first end of the first sampling resistor R1 is 5V; the non-inverting input end of the comparator T1 is connected between the second sampling resistor R2 and the third sampling resistor R3 which are connected in series, the potential of the non-inverting input end + of the comparator T1 is equivalent to the divided voltage of the second sampling resistor R2 and is lower than 5V, at the moment, the potential of the non-inverting input end + of the comparator T1 is lower than the potential of the inverting input end-, the comparator T1 outputs low level, the light emitting diode T2 is not lightened, and the fault of the cable 8 to be detected is indicated.
The cable fault detection device is exemplified in one of its implementations, which is not the only limitation of the cable fault detection device.
As shown in fig. 2 and 3, the cable fault detection device includes a housing 9, four first interfaces 1 connected in parallel and four second interfaces 6 connected in parallel are disposed on the housing 9, the four first interfaces 1 are different, and similarly, the four second interfaces 6 are different. The first interface 1 and the second interface 6 are respectively arranged on two opposite sides of the shell 9. The housing 9 is further provided with a light emitting diode T2 emitting green light, and a power switch 10, and the detection operation of the cable 8 to be detected is performed by turning on or off the power switch 10. The power switch 10 may be provided in two, one for turning on the dc power supply 7 and the other for turning off the dc power supply 7.
The housing 9 is provided with a first sampling resistor R1, a second sampling resistor R2, a third sampling resistor R3, a comparator T1 and a dc power supply 7, wherein the dc power supply 7 is, for example, but not limited to, a lithium battery, a dry battery, etc.
A first end of the first sampling resistor R1 is electrically connected to the first interface 1, and a second end of the first sampling resistor R1 is electrically connected to the positive electrode of the dc power supply 7. The first end of the second sampling resistor R2 is electrically connected to the first interface 1 and the negative electrode of the dc power supply 7, the second end of the second sampling resistor R2 is electrically connected to the first end of the third sampling resistor R3, and the second end of the third sampling resistor R3 is electrically connected to the positive electrode of the dc power supply 7. The inverting input terminal-of the comparator T1 is electrically connected to the first terminal of the first sampling resistor R1, and the non-inverting input terminal + of the comparator T1 is electrically connected to the second terminal of the second sampling resistor R2. The positive terminal of the light emitting diode T2 is electrically connected to the output terminal of the comparator T1, and the negative terminal of the light emitting diode T2 is electrically connected to the negative terminal of the dc power supply 7.
In a second aspect, the present invention provides a line fault detection method using the cable fault detection apparatus, including:
when two ends of a cable 8 to be detected are electrically connected to the first interface 1 and the second interface 6 respectively, sampling voltages of the first voltage sampling circuit 2 and the second voltage sampling circuit 5 are obtained respectively, and whether the cable 8 to be detected has a fault or not is determined according to the level of the two sampling voltages;
and indicating whether the cable 8 to be detected has a fault or not according to the determination result of the detection module 3.
The line fault detection method adopts the cable fault detection device of the above embodiment, and the working principle and effect thereof refer to the above example, which is not described herein again.
As an implementation manner, if the sampling voltage of the first voltage sampling circuit 2 is higher than the sampling voltage of the second voltage sampling circuit 5, the cable 8 to be detected has a fault, otherwise, the cable 8 to be detected has no fault.
It will be understood that any orientation or positional relationship indicated above with respect to the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc., is based on the orientation or positional relationship shown in the drawings and is for convenience in describing and simplifying the invention, and does not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be considered limiting of the invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the invention herein disclosed is not limited to the particular combination of features described above, but also encompasses other arrangements formed by any combination of the above features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (9)
1. A cable fault detection device, comprising:
the first interface and the second interface are used for being electrically connected with two ends of the cable to be detected respectively;
the first voltage sampling circuit is electrically connected with the first interface;
the second voltage sampling circuit is electrically connected with the second interface;
the detection module is respectively electrically connected with the first voltage sampling circuit and the second voltage sampling circuit and is used for determining whether the cable to be detected has a fault or not according to the sampling voltages of the first voltage sampling circuit and the second voltage sampling circuit;
and the indicating module is electrically connected with the detecting module and used for indicating whether the cable to be detected has a fault or not according to the determination result of the detecting module.
2. The cable fault detection device of claim 1, comprising more than two of the first interfaces connected in parallel with each other, each of the first interfaces being different.
3. The cable fault detection device according to claim 1 or 2, comprising two or more of the second interfaces connected in parallel with each other, each of the second interfaces being different.
4. The cable fault detection device of claim 3, wherein the first voltage sampling circuit includes a first sampling resistor, a first end of the first sampling resistor is electrically connected to the first interface, and a second end of the first sampling resistor is electrically connected to a positive electrode of a DC power supply.
5. The cable fault detection device according to claim 4, wherein the second voltage sampling circuit includes a second sampling resistor and a third sampling resistor, a first end of the second sampling resistor is electrically connected to the first interface and a negative electrode of the dc power supply, respectively, a second end of the second sampling resistor is electrically connected to a first end of the third sampling resistor, and a second end of the third sampling resistor is electrically connected to a positive electrode of the dc power supply.
6. The cable fault detection device of claim 5, wherein the detection module includes a comparator having an inverting input electrically connected to the first terminal of the first sampling resistor and a non-inverting input electrically connected to the second terminal of the second sampling resistor.
7. The cable fault detection device according to claim 6, wherein the indication module includes a light emitting diode, a positive terminal of the light emitting diode is electrically connected to the output terminal of the comparator, and a negative terminal of the light emitting diode is electrically connected to the negative terminal of the direct current power supply.
8. A line fault detection method using the cable fault detection apparatus according to any one of claims 1 to 7, comprising:
when two ends of a cable to be detected are electrically connected to the first interface and the second interface respectively, sampling voltages of the first voltage sampling circuit and the second voltage sampling circuit are obtained respectively, and whether the cable to be detected has a fault or not is determined according to the heights of the two sampling voltages;
and indicating whether the cable to be detected has a fault or not according to the determination result of the detection module.
9. The line fault detection method according to claim 8, wherein if the sampling voltage of the first voltage sampling circuit is higher than the sampling voltage of the second voltage sampling circuit, the cable to be detected is faulty, otherwise the cable to be detected is faultless.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111390225.9A CN114089116A (en) | 2021-11-22 | 2021-11-22 | Cable fault detection device and line fault detection method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111390225.9A CN114089116A (en) | 2021-11-22 | 2021-11-22 | Cable fault detection device and line fault detection method |
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| CN114089116A true CN114089116A (en) | 2022-02-25 |
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| CN202111390225.9A Pending CN114089116A (en) | 2021-11-22 | 2021-11-22 | Cable fault detection device and line fault detection method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114895107A (en) * | 2022-04-13 | 2022-08-12 | 无锡盛景微电子股份有限公司 | Resistance detection system and method for electronic detonator |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104991164A (en) * | 2015-06-23 | 2015-10-21 | 中国电子科技集团公司第七研究所 | Cable on-line detector |
| CN205610749U (en) * | 2016-04-26 | 2016-09-28 | 国网山东省电力公司即墨市供电公司 | Telephone circuit trouble integrated test device |
| CN211457129U (en) * | 2020-04-26 | 2020-09-08 | 新疆大学 | Portable electric power communication channel test terminal |
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2021
- 2021-11-22 CN CN202111390225.9A patent/CN114089116A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104991164A (en) * | 2015-06-23 | 2015-10-21 | 中国电子科技集团公司第七研究所 | Cable on-line detector |
| CN205610749U (en) * | 2016-04-26 | 2016-09-28 | 国网山东省电力公司即墨市供电公司 | Telephone circuit trouble integrated test device |
| CN211457129U (en) * | 2020-04-26 | 2020-09-08 | 新疆大学 | Portable electric power communication channel test terminal |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114895107A (en) * | 2022-04-13 | 2022-08-12 | 无锡盛景微电子股份有限公司 | Resistance detection system and method for electronic detonator |
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