CN215493918U

CN215493918U - Cable detector

Info

Publication number: CN215493918U
Application number: CN202121670483.8U
Authority: CN
Inventors: 贾仁会; 张禹彬; 隋凯; 姜山; 徐鑫; 刘丹洋; 孙泽生; 杨清明; 杨业东; 高宇; 李扬; 于滨
Original assignee: FAW Jiefang Automotive Co Ltd
Current assignee: FAW Jiefang Automotive Co Ltd
Priority date: 2021-07-21
Filing date: 2021-07-21
Publication date: 2022-01-11
Anticipated expiration: 2031-07-21

Abstract

The utility model relates to a cable detector which comprises a main control box, an auxiliary control box and a power supply. The main control box comprises a main box body, a plurality of main detection terminals, a main internal circuit, a detection chip and a plurality of main indicating lamps, wherein the detection chip circularly outputs current between different output pins, and the main detection terminals are connected with the main indicating lamps in series through the main internal circuit and then connected with one output pin of the detection chip through the main indicating lamps. The auxiliary control box comprises an auxiliary box body, a plurality of auxiliary detection terminals and an auxiliary internal circuit, and different auxiliary detection terminals are connected in parallel through the auxiliary internal circuit. The power supply is arranged in the main box body and supplies power for the detection chip. The main control box and the auxiliary control box are respectively connected to two ends of the cable to be detected, so that a loop can be formed with the cable to be detected, and the on-off inside the cable is judged according to the on-off of the loop, so that the on-off of the cable can be remotely detected. Be provided with a plurality of detection terminals simultaneously, support to detect many cable cores simultaneously, detection efficiency improves greatly.

Description

Cable detector

Technical Field

The utility model relates to the technical field of instrument measurement, in particular to a cable detector.

Background

The cable is widely applied to the fields of communication, power and the like, and common cables are divided into single-core cables and multi-core cables. When alternating current or alternating electromagnetic field exists in the conductor, the current distribution in the conductor is uneven, the current is concentrated on the skin part of the conductor, namely the current is concentrated on the thin layer on the outer surface of the conductor, the closer to the surface of the conductor, the higher the current density is, and the smaller the current is actually in the conductor. As a result, the resistance of the conductor increases, so that its power loss also increases, a phenomenon known as the skin effect. When the single-core cable is subjected to alternating current or alternating electromagnetic field, the skin effect is obvious, and the line loss is increased. The multi-core cable is a cable with more than one insulated wire core, which also reduces the skin effect of the cable, thereby reducing the loss of the line, and is widely used due to its excellent performance, however, the multi-core cable is difficult to avoid failure or needs to be subjected to on-off detection due to other situations in the using process, which is undoubtedly a problem.

The traditional cable detection method adopts the buzzing gear of the universal meter to directly measure, is limited by the length of the universal meter pen, is difficult to measure cables above meter-level units, and needs to test all wire cores one by one aiming at multi-core cables, is time-consuming and labor-consuming, hardly guarantees the conditions of missing test and the like in the detection process, is low in efficiency, generally needs a plurality of people to be mutually matched, and is very inconvenient to operate a detection instrument together.

SUMMERY OF THE UTILITY MODEL

In view of the above, there is a need to provide a cable tester capable of implementing remote testing and supporting simultaneous measurement of multiple cable cores.

A cable tester, comprising:

the main control box comprises a main box body, a main detection terminal, a main internal circuit, a detection chip and a main indicator light, wherein the detection chip circularly outputs current among different output pins under the working state, and the main internal circuit and the detection chip are positioned inside the main box body; the main detection terminals and the main indicator lamps are multiple, each main detection terminal is connected with one main indicator lamp in series through the main internal circuit and then connected with one output pin through the main indicator lamp, and the main indicator lamp is exposed on the outer surface of the main box body;

the auxiliary control box comprises an auxiliary box body, a plurality of auxiliary detection terminals and an auxiliary internal circuit, wherein the auxiliary internal circuit is positioned in the auxiliary box body, and different auxiliary detection terminals are connected in parallel through the auxiliary internal circuit; and

and the power supply is arranged in the main box body and supplies power to the detection chip.

In one embodiment, the detection chip is in the model of SAM 8118.

In one embodiment, the auxiliary control box comprises a plurality of auxiliary indicating lamps, each auxiliary indicating lamp is connected with one auxiliary detection terminal in series through the auxiliary internal circuit and is exposed on the outer surface of the auxiliary box body.

In one embodiment, the main indicator light and the auxiliary indicator light both use LEDs, and at least two LEDs of the main indicator light 13 and the auxiliary indicator light 23 are connected in parallel with diodes having opposite positive and negative directions.

In one embodiment, one of the main testing terminal and the auxiliary testing terminal is a probe-type testing terminal, and the other one is a probe-hole-type testing terminal.

In one embodiment, the main detection terminal and the auxiliary detection terminal both include two specifications of 1.5mm and 1.75mm, the main detection terminals of the two specifications are connected in parallel with each other, and the auxiliary detection terminals of the two specifications are connected in parallel with each other.

In one embodiment, each of the main detection terminals and each of the auxiliary detection terminals are provided with a distinguishing mark.

In one embodiment, the main indicator lamp comprises a chip work indicator lamp, and the chip work indicator lamp is connected to a work indicator lamp output pin of the detection chip and displays the work state of the detection chip.

In one embodiment, the power supply voltage is 9V, and the power supply is a laminate battery.

In one embodiment, the main control box comprises a power switch and a power on-off lamp, the power switch controls the on-off of the power, and the power on-off lamp displays the on-off condition of the power.

Above-mentioned cable detection appearance, including main control box and auxiliary control box, only need to connect main control box and auxiliary control box respectively at the both ends of the cable that awaits measuring, alright form the return circuit with the cable that awaits measuring, survey main pilot lamp again through detecting chip output current and whether light, and then judge the break-make condition that the break-make in return circuit can judge the inside break-make of cable, just also realized the inside break-make of remote detection cable. And meanwhile, the main control box and the auxiliary control box are both provided with a plurality of detection terminals, so that a plurality of cable cores are supported to be detected simultaneously, and the detection efficiency is greatly improved.

Drawings

FIG. 1 is a schematic view of a cable tester according to an embodiment of the present invention;

FIG. 2 is an internal schematic view of the main control box of FIG. 1;

fig. 3 is an internal schematic view of the supplementary control box shown in fig. 1.

100. A cable detector; 10. a main control box; 11. a main box body; 12. a main detection terminal; 121. a 1.75mm main detection terminal; 122. a 1.5mm main detection terminal; 13. a main indicator light; 14. detecting a chip; 15. a main internal circuit; 16. a power switch; 17. the power supply is switched on and off; 20. an auxiliary control box; 21. an auxiliary box body; 22. an auxiliary detection terminal; 221. 1.75mm auxiliary detection terminal; 222. 1.5mm auxiliary detection terminal; 23. an auxiliary indicator light; 24. and an auxiliary internal circuit.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

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 at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1 to 3, a cable tester 100 according to an embodiment of the present invention includes a main control box 10, an auxiliary control box 20, and a power supply (not shown). The main control box 10 comprises a main box body 11, a plurality of main detection terminals 12, a main internal circuit 15, a detection chip 14 and a plurality of main indicator lamps 13, the detection chip 14 circulates output current between different output pins under the working state, the main internal circuit 15 and the detection chip 14 are located inside the main box body 11, the main detection terminals 12 are connected with the main indicator lamps 13 in series through the main internal circuit 15 and then connected with one output pin of the detection chip 14 through the main indicator lamps 13, and the main indicator lamps 13 are exposed on the outer surface of the main box body 11. The auxiliary control box 20 includes an auxiliary box body 21, a plurality of auxiliary detection terminals 22, and an auxiliary internal circuit 24, the auxiliary internal circuit 24 is located inside the auxiliary box body 21, and the different auxiliary detection terminals 22 are connected in parallel through the auxiliary internal circuit 24. The power supply is arranged in the main box body 11 and supplies power for the detection chip 14.

When the cable detector 100 is used, only two ends of a cable core to be detected are connected with the main detection terminal 12 on the main control box 10 and the auxiliary detection terminal 22 on the auxiliary control box 20 respectively, a loop is formed among the main control box 10, the auxiliary control box 20 and the cable to be detected, when the detection chip 14 is powered on, current can be output through the output pins, when the loop is a path, the main indicator light 13 connected to the output pins is turned on when current flows, when the loop is an open circuit, the main indicator light 13 connected to the output pins is always in a dark state, and therefore the on-off of the corresponding cable core connected to the main indicator light 13 can be judged through whether the main indicator light 13 can be turned on or not. Through dividing cable detection appearance 100 into main control box 10 and auxiliary control box 20 two parts, realized the inside break-make of remote detection cable, main control box 10 all is provided with a plurality of detection terminals with auxiliary control box 20 simultaneously, supports to detect many cable cores simultaneously, and detection efficiency improves greatly. It should be noted that at least two cores are needed to form a loop among the main control box 10, the auxiliary control box 20 and the cable to be tested, and when the cable to be tested is a single core cable or only one core exists at most, the cable to be tested is connected, the auxiliary conductor can be connected between one group of the main detection terminals 12 and the auxiliary detection terminals 22 by means of the auxiliary conductor, so that the detection can be performed.

In addition, when the cable that awaits measuring is normal for the function but not clear the cable core both ends corresponding relation that awaits measuring, above-mentioned cable detection instrument 100 also can be used for finding out the different both ends of same cable core that awaits measuring, can be with the help of auxiliary wire this moment, link auxiliary wire between one of them main detection terminal 12 of group and auxiliary detection terminal 22, be connected one of them sinle silk of cable one end and main detection terminal 12 or auxiliary detection terminal 22, connect the sinle silk of the cable other end to corresponding auxiliary detection terminal 22 or main detection terminal 12 in proper order again, when corresponding main pilot lamp 13 can be lighted, explain promptly that the sinle silk both ends that connect come from same sinle silk.

Further, each of the main detection terminals 12 and each of the auxiliary detection terminals 22 are provided with a distinguishing mark. The arrangement of the distinguishing mark can help to correspond the main detection terminal 12, the auxiliary detection terminal 22 and the main indicator light 13 to each other, so that the detection result can be conveniently judged.

Further, one of the main detection terminal 12 and the auxiliary detection terminal 22 is a probe-type detection terminal, and the other is a probe-hole-type detection terminal. The two detection terminals are respectively designed into a probe type and a hole probing type, so that the probe type and the hole probing type can be well adapted to the pin-shaped structures and the hole-shaped structures at two ends of the cable core to be detected, the pin-shaped detection terminal is connected with one end of the hole shape of the cable core to be detected, the hole-shaped detection terminal is connected with one end of the pin-shaped structure of the cable core to be detected, and the detection terminal is easy to operate, convenient and reliable to connect.

Specifically, the main detection terminal 12 and the auxiliary detection terminal 22 both include two specifications of 1.5mm and 1.75mm, the main detection terminals 12 of the two specifications are connected in parallel with each other, and the auxiliary detection terminals 22 of the two specifications are connected in parallel with each other. The two specifications correspond to the cable cores of the two models respectively, so that the cable detector 100 can be well applied to the cable cores of the two models, the reliability of the cable detector in different specifications is enhanced, and the application range of the cable detector is expanded.

In some embodiments, the auxiliary control box 20 includes a plurality of auxiliary indicator lamps 23, and each auxiliary indicator lamp 23 is connected in series with an auxiliary detection terminal 22 through an auxiliary internal circuit 24 and exposed on the outer surface of the auxiliary box body 21. When current is output through detecting chip 14 stitch, flow through main pilot lamp 13 and then flow through the cable core that awaits measuring in proper order again, supplementary detection terminal 22 lights supplementary pilot lamp 23, so when supplementary pilot lamp 23 can be lighted, can explain equally that the cable core that awaits measuring that supplementary detection terminal 22 that this supplementary pilot lamp 23 corresponds is connected is the intercommunication. On the contrary, if the auxiliary indicator light 23 cannot be lighted, it indicates that the cable core to be tested connected to the auxiliary detection terminal 22 corresponding to the auxiliary indicator light 23 is disconnected. Therefore, when the main control box 10 is far away from the auxiliary control box 20, the person at the auxiliary control box 20 can also judge the on/off of the cable core to be tested.

Further, the main indicator light 13 and the auxiliary indicator light 23 both use LEDs, and at least two LEDs of the main indicator light 13 and the auxiliary indicator light 23 are connected in parallel with diodes having opposite positive and negative directions. The LEDs have small size, long life, low power consumption and easy driving, and can be directly driven by the output current of many chips, but the LEDs have one-way conductivity, so that at least two LEDs are connected in parallel with diodes with opposite directions of the anode and the cathode of the LEDs so that the current can form a loop, and in this case, it is required to ensure that the main detection terminal 12 and the auxiliary detection terminal 22 corresponding to the LEDs having at least two parallel diodes of the main control box 10 and the auxiliary control box 20 are connected in the loop formed by the cable cores to be tested in a mutually corresponding manner.

In some embodiments, the detection chip 14 is model SAM 8118. The SAM8118 chip has 10 output pins and 10 paths of shift scanning outputs. In the present embodiment, there are provided 14

main detection terminals

12 and 14 auxiliary detection terminals 22, where 8 main detection terminals 12 and 8 auxiliary detection terminals 22 are 1.75mm in size, 6 main detection terminals 12 and 6 auxiliary detection terminals 22 are 1.5mm in size, each 1.5mm main detection terminal 122 is connected in parallel to 1 1.75mm main detection terminal 121, and each 1.5mm auxiliary detection terminal 222 is connected in parallel to 1 1.75mm auxiliary detection terminal 221. It can be understood that the specific number of the detection terminals can be designed according to the requirements of users, the sizes of the main box body 11 and the auxiliary box body 21, and other parts of the cable detector 100 are adaptively adjusted according to the specific number of the detection terminals, and only the number of the detection terminals that is not less than two and not more than the number of the output pins of the detection chip 14 is required, which is not specifically limited herein.

Further, the main indicator 13 is additionally provided with a chip work indicator, and the chip work indicator is connected to a work indicator output pin of the detection chip 14 to display the working state of the detection chip 14. The user can judge whether the detection chip 14 is in a working state according to the on/off of the indicator light, so that the cable detector 100 can be used conveniently and the fault can be eliminated when the cable detector 100 breaks down.

In some embodiments, the power supply voltage is 9V and the power supply is a laminate battery. The 9V voltage may be well supported and adapted to the requirements of the cable tester 100. The laminated battery is a power supply of a very common measuring instrument, has high voltage, low delayed discharge current of internal chemical reaction and long service time.

Further, the main control box 10 comprises a power switch 16 and a power on-off lamp 17, the power switch 16 controls the on-off of the power, and the power on-off lamp 17 displays the on-off condition of the power. The power switch 16 can control the on-off of the power supply, so that the switch of the cable detector 100 is controlled, and the user can well judge the on-off condition of the instrument according to the power on-off lamp 17.

Foretell cable detector 100 is main control box 10 and auxiliary control box 20 two parts through the design, has realized the inside break-make of remote detection cable, and main control box 10 and auxiliary control box 20 all are provided with a plurality of detection terminals simultaneously, support to detect many cable cores simultaneously, and detection efficiency improves greatly. When the cable to be tested is normal in function but the corresponding relationship between the two ends of the cable core to be tested is not clear, the cable tester 100 may also be used to find out the two different ends of the same cable core to be tested. All set up the mark of distinguishing on each main test terminal 12 and each supplementary test terminal 22, will correspond mutually between main test terminal 12, supplementary test terminal 22 and the main pilot lamp 13 three, conveniently judge the testing result. The two detection terminals are respectively designed into a probe type and a hole probing type, so that the two detection terminals can be well adapted to the pin structure and the hole structure at two ends of the cable core to be detected, and the connection operation is simple, convenient and reliable. In addition, the detection terminal comprises two specifications of 1.5mm and 1.75mm, so that the cable detector 100 can be well applied to cable cores of two types, the reliability of the cable detector in different specifications is enhanced, and the application range of the cable detector is expanded. The auxiliary indicator lamp 23 is arranged on the auxiliary control box 20, so that the on-off of the cable core to be tested can be judged at the two ends of the remote cable. The indicator light adopts the LED, and makes the pertinence design according to the characteristic of LED, guarantees that the electric current of test can form the return circuit. The SAM8118 type chip is adopted, and the number of the detection terminals is designed according to the number of output pins, user requirements and the size of an instrument. Meanwhile, a chip work indicator lamp, a power switch 16 and a power on-off lamp 17 are arranged, so that a user can conveniently control the cable detector 100 and know the state of the cable detector 100. The power supply uses a 9V laminated battery, and the service life is long.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A cable tester, comprising:

2. The cable tester as claimed in claim 1, wherein the testing chip is of type SAM 8118.

3. The cable tester of claim 1, wherein the auxiliary control box includes a plurality of auxiliary indicator lights, each of the auxiliary indicator lights being configured to be coupled to one of the auxiliary test terminals via the auxiliary internal circuit and exposed to an outer surface of the auxiliary box body.

4. The cable tester according to claim 3, wherein the main indicator light and the auxiliary indicator light are both LEDs, and at least two of the main indicator light and the auxiliary indicator light are connected in parallel with diodes having opposite positive and negative polarities.

5. The cable tester of claim 1, wherein one of the primary and secondary test terminals is a probe-type test terminal and the other is a probe-hole-type test terminal.

6. The electrical cable tester according to claim 1, wherein the main test terminals and the auxiliary test terminals each include two sizes of 1.5mm and 1.75mm, the main test terminals of the two sizes are connected in parallel with each other, and the auxiliary test terminals of the two sizes are connected in parallel with each other.

7. The cable tester as recited in claim 1, wherein each of the primary test terminals and each of the secondary test terminals are provided with a distinguishing mark.

8. The cable tester of claim 1, wherein the main indicator light comprises a chip operation indicator light, and the chip operation indicator light is connected to an operation indicator light output pin of the test chip to display an operation state of the test chip.

9. The cable tester of claim 1, wherein the supply voltage is 9V and the power supply is a laminate battery.

10. The cable tester of claim 1, wherein the main control box comprises a power switch and a power on-off lamp, the power switch controls the power on-off, and the power on-off lamp displays the power on-off condition.