CN212134923U

CN212134923U - Fault detection device

Info

Publication number: CN212134923U
Application number: CN202020600020.3U
Authority: CN
Inventors: 陈强; 郑伟; 骆爽
Original assignee: China Railway 22nd Bureau Group Co Ltd; Electrification Engineering Co Ltd of China Railway 22nd Bureau Group Co Ltd
Current assignee: China Railway 22nd Bureau Group Co Ltd; Electrification Engineering Co Ltd of China Railway 22nd Bureau Group Co Ltd
Priority date: 2020-04-20
Filing date: 2020-04-20
Publication date: 2020-12-11
Anticipated expiration: 2030-04-20

Abstract

The utility model provides a fault detection device, include: the detection circuit comprises a main circuit, a plurality of first branches and a plurality of second branches, wherein the first branches and the second branches are arranged in a one-to-one correspondence manner, one first branch and one second branch which are arranged correspondingly form a detection group, the first branches are connected with the main circuit in parallel, the second branches are connected with the main circuit in parallel, the free end of each first branch forms a first detection end, and the free end of each second branch forms a second detection end; a power supply provided in the main path; a plurality of first switches, one first switch being provided on each first branch; and each second branch is provided with one light-emitting element. The technical scheme of the application effectively solves the problem that errors are easy to occur when the welding line is checked in the related technology.

Description

Fault detection device

Technical Field

The utility model relates to a railway signal construction field particularly, relates to a fault detection device.

Background

In a railway signal mechanical room, an interface frame is connected with an interlocking cabinet by adopting a multi-core microcomputer cable, generally twenty-two cores to thirty-four cores are adopted, microcomputer cable plugs are welded at two ends of the microcomputer cable, and the welding sequence of the microcomputer cable plugs is identified by colors or wire core numbers.

As shown in fig. 1, in order to ensure the accurate welding of the welding line between the both ends of the microcomputer cable 4 and the microcomputer cable plug, the wiring needs to be checked after the welding is completed, otherwise, a lot of time and manpower are needed to find the fault of the welding line in the debugging process.

In the related art, checking the welding line requires two persons to check at both ends of the microcomputer plug, respectively, two persons need to touch the corresponding terminals of the microcomputer plug 1 with two styluses 2 of the multimeter 3 at the same time, respectively, and the multimeter hears the beep with the on-state gear to turn on. Specifically, thirty-two weld lines are collated. Two workers are respectively arranged at two sides of two microcomputer plugs 1, and each worker uses one meter pen 2 and one universal meter 3 to adjust to a conducting gear. First workman is with a terminal of pen-shape metre 2 point contact a computer plug 1, shout one in the mouth simultaneously, the second workman hears one back, with another pen-shape metre 2 point contact another computer plug 1's terminal, when hearing the buzzer of universal meter 3 and make a sound and confirm that the welding line is correct, confirm the completion back, first workman is with No. two terminals of pen-shape metre 2 point contact a computer plug 1, shout two in the mouth simultaneously, the second workman hears two backs, No. two terminals of point contact another computer plug 1, whether the bonding wire is correct in order to confirm No. two terminals. And so on until the thirty-two terminals are completely conducted.

When checking the welding line, two people need say serial number and conducting state each other ceaselessly, make mistakes very easily when the environment is noisy, and the terminal nonconformity or the conducting state wrong report that two people checked cause and check inaccurately. In addition, checking the welding line can only check whether the terminal of the welding line is correct, and cannot check that the terminal is not mixed. Moreover, the related art has human error rate, and even if the verification is carried out, the problems of wrong lines, mixed power and the like can exist.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide a fault detection device to solve the problem of easily making mistakes when checking a welding line in the related art.

In order to achieve the above object, the utility model provides a fault detection device, include: the detection circuit comprises a main circuit, a plurality of first branches and a plurality of second branches, wherein the first branches and the second branches are arranged in a one-to-one correspondence manner, one first branch and one second branch which are arranged correspondingly form a detection group, the first branches are connected with the main circuit in parallel, the second branches are connected with the main circuit in parallel, the free end of each first branch forms a first detection end, and the free end of each second branch forms a second detection end; a power supply provided in the main path; a plurality of first switches, one first switch being provided on each first branch; and each second branch is provided with one light-emitting element.

Further, the fault detection device further comprises a buzzer, and the buzzer is arranged in the main road.

Further, the detection circuit further includes a second switch provided in the main path.

Further, the power source is a battery, the first switch is a button switch, and the light emitting element is a light emitting diode.

Further, the fault detection device also comprises a main board, and the detection circuit is arranged on the main board.

Further, the fault detection device also comprises a box body and a cover body which can be covered on the box body in an opening and closing way, and the main board is arranged in the box body.

Further, be provided with first interface and second interface on the box, first interface and second interface all are connected with the mainboard electricity, and the first sense terminal of every first branch road all sets up at first interface department of inserting, and the second sense terminal of every second branch road all sets up at the second interface department of inserting, and the first plug of the microcomputer cable who waits to detect can insert ground and first interface cooperation, and the second plug of microcomputer cable can insert ground and second interface cooperation.

Furthermore, the box body is also provided with a power supply shell and a standby shell, and the power supply is arranged in the power supply shell.

Further, the box body comprises a first side portion, a second side portion, a third side portion and a fourth side portion, the first side portion and the second side portion are arranged oppositely, the third side portion and the fourth side portion are connected between the first side portion and the second side portion, the power supply shell is located in the first side portion, the standby shell is located in the second side portion, the first inserting port and the second inserting port are located on the third side portion, and the cover body is connected to the fourth side portion in a pivoting mode.

Furthermore, a through hole for the second switch to penetrate out is further formed in the box body, an air hole is formed in the side wall, corresponding to the buzzer, of the box body, and an installation portion is arranged on the inner wall of the cover body.

Use the technical scheme of the utility model, fault detection device includes: the light emitting device comprises a detection circuit, a power supply, a plurality of first switches and a plurality of light emitting elements. The detection circuit includes a main circuit, a plurality of first branches, and a plurality of second branches. The plurality of first branches and the plurality of second branches are arranged in a one-to-one correspondence manner, and one first branch and one second branch which are correspondingly arranged form a detection group. The plurality of first branches are connected in parallel with the main circuit, and the plurality of second branches are connected in parallel with the main circuit. The free end of each first branch forms a first detection end, and the free end of each second branch forms a second detection end. The power supply is provided in the main path. Each first branch is provided with a first switch. Each second branch is provided with a light-emitting element. The detection circuit is used for checking a welding line between the microcomputer cable and the plug. The plug comprises a first plug and a second plug, the first end of the microcomputer cable is welded with the second end of the first plug, and the second end of the microcomputer cable is welded with the second end of the second plug. Each first detection end is electrically connected with the first end of each conductor of the first plug to be detected. Each second sensing terminal is electrically connected to the first terminal of a respective conductor of the second plug. When current passes through the light-emitting element, the light-emitting element is lighted to accurately find out the position of a fault line in the welding line. Each first detection end is electrically connected with the first end of each conductor of the first plug to be detected. Each second sensing terminal is electrically connected to the first terminal of a respective conductor of the second plug. Thus, the fault position of the welding line is conveniently and rapidly found out. When the welding line between the microcomputer cable and the plug is checked, the first switch is pressed in sequence, and whether the light-emitting element electrically connected with the first switch is lightened or not is observed. Whether the welding line is conducted or not or whether the welding line is conducted wrongly is judged according to whether the light-emitting element is bright or not, so that whether the welding line between the first end of the microcomputer cable and the first plug is accurately welded or not is judged, the error rate of checking the welding line in the related technology can be reduced to the maximum extent, and the detection can be finished by one person. Therefore, the technical scheme of the application effectively solves the problem that errors are easy to occur when the welding lines are checked in the related art. In addition, compared with the related art, the technical scheme of the application omits a universal meter, saves the use of equipment and increases the construction efficiency.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and 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 and not to limit the invention. In the drawings:

FIG. 1 is a simplified diagram of a related art configuration for verifying a weld line between two ends of a microcomputer cable and a microcomputer plug using a multimeter;

fig. 2 shows a schematic perspective view of an embodiment of a fault detection device according to the present invention;

FIG. 3 shows a schematic diagram of a detection circuit of the fault detection device of FIG. 2;

FIG. 4 shows an enlarged schematic view at A of the fault detection device of FIG. 3;

FIG. 5 shows a detection schematic of the detection circuit of the fault detection device of FIG. 3;

FIG. 6 is a schematic diagram showing a break in a bonding wire of a micro-computer cable and a first plug of the fault detection device of FIG. 3;

FIG. 7 shows an enlarged schematic view at B of the fault detection device of FIG. 6;

FIG. 8 is a schematic diagram showing cross-connection of a microcomputer cable of the fault detection device of FIG. 2 with a weld line of a first plug;

FIG. 9 shows an enlarged schematic view at C of the fault detection device of FIG. 8;

FIG. 10 is a schematic diagram illustrating the misconnection of a microcomputer cable with a bonding wire of a first plug of the fault detection device of FIG. 2; and

fig. 11 shows an enlarged schematic view at D of the fault detection device of fig. 10.

Wherein the figures include the following reference numerals:

1. a microcomputer plug; 2. a meter pen; 3. a universal meter; 4. a microcomputer cable; 5. a main road; 6. a first branch; 7. a second branch circuit; 10. a microcomputer cable; 21. a first plug; 22. a second plug; 30. a power source; 41. a first switch; 42. a second switch; 50. a light emitting element; 60. a buzzer; 70. a main board; 80. a box body; 81. a first interface; 82. a second interface; 83. a power supply housing; 84. perforating; 85. air holes are formed; 90. a cover body; 91. an installation part.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

As shown in fig. 2 to 10, in the present embodiment, the failure detection device includes: a detection circuit, a power supply 30, a plurality of first switches 41, and a plurality of light emitting elements 50. The detection circuit comprises a main circuit 5, a plurality of first branches 6 and a plurality of second branches 7. The plurality of first branches 6 and the plurality of second branches 7 are arranged in a one-to-one correspondence, and one first branch 6 and one second branch 7 which are arranged in a corresponding manner form a detection group. A plurality of first branches 6 are connected in parallel with the main path 5, and a plurality of second branches 7 are connected in parallel with the main path 5. The free end of each first branch 6 forms a first detection end and the free end of each second branch 7 forms a second detection end. A power supply 30 is provided in the main path 5. A first switch 41 is arranged on each first branch 6. One light emitting element 50 is arranged on each second branch 7.

By applying the technical scheme of this embodiment, the plurality of first branches 6 and the plurality of second branches 7 are arranged in a one-to-one correspondence, and one first branch 6 and one second branch 7 which are arranged correspondingly form one detection group. A plurality of first branches 6 are connected in parallel with the main path 5, and a plurality of second branches 7 are connected in parallel with the main path 5. The free end of each first branch 6 forms a first detection end and the free end of each second branch 7 forms a second detection end. A power supply 30 is provided in the main path 5. A first switch 41 is arranged on each first branch 6. One light emitting element 50 is arranged on each second branch 7. The detection group is able to verify the welding line between the microcomputer cable 10 and the plug. The plug comprises a first plug 21 and a second plug 22, a first end of the microcomputer cable 10 is welded with a second end of the first plug 21, and a second end of the microcomputer cable 10 is welded with a second end of the second plug 22. Each of the first detection terminals is electrically connected to a first end of a respective conductor of the first plug 21 to be detected. Each second sensing terminal is electrically connected to the first terminal of a respective conductor of the second plug 22. The light emitting element 50 is illuminated when current passes through the light emitting element 50 to accurately locate the faulty wire in the weld line. Each of the first detection terminals is electrically connected to a first end of a respective conductor of the first plug 21 to be detected. Each second sensing terminal is electrically connected to the first terminal of a respective conductor of the second plug 22. Thus, the fault position of the welding line is conveniently and rapidly found out. When checking the welding line between the microcomputer cable 10 and the plug, the first switch 41 is sequentially pressed to see whether the light emitting element 50 electrically connected to the first switch 41 is on. Whether the welding line is conducted or not or whether the welding line is conducted incorrectly is judged according to whether the light-emitting element 50 is bright, so that whether the welding line between the first end of the microcomputer cable and the first plug is accurately welded or not is judged, the error rate of checking the welding line in the related technology can be reduced to the maximum extent, and the detection can be finished by one person. Therefore, the technical scheme of the embodiment effectively solves the problem that errors are easy to occur when the welding lines are checked in the related art. In addition, compared with the related art, the technical scheme of the embodiment omits a universal meter, saves the use of equipment and increases the construction efficiency.

As shown in fig. 2 to 5, in the present embodiment, the failure detection device further includes a buzzer 60, and the buzzer 60 is provided in the main road 5. Whether the buzzer 60 rings to judge whether the welding line is conducted or not or whether the welding line is mistakenly conducted or not, and then whether the microcomputer cable is conducted or not can be perceived more conveniently, and due to the fact that the light-emitting element 50 and the buzzer 60 are arranged, double safety of vision and hearing is achieved.

As shown in fig. 2 to 5, in the present embodiment, the detection circuit further includes a second switch 42 provided in the main circuit 5. The test of the detection circuit can be started after opening the second switch 42.

As shown in fig. 2 to 5, in the present embodiment, the power source 30 is a battery, the first switch 41 is a push switch, and the light emitting element 50 is a light emitting diode. The structure has low cost and remarkable effect.

As shown in fig. 2, in the present embodiment, the failure detection apparatus further includes a main board 70, and the detection circuit is disposed on the main board 70. The main board 70 is provided to facilitate the detection of circuit wiring and to facilitate electrical connection.

As shown in fig. 2, in the present embodiment, the failure detection device further includes a case 80 and a cover 90 that is openably and closably provided on the case 80. The main board 70 is mounted in the case 80. The case 80 is provided to accommodate the main board 70, and the cover 90 is provided to cover the case 80 to prevent the power supply 30, the plurality of first switches 41 and the plurality of light emitting elements 50 on the main board 70 from being touched, for protecting the power supply 30, the plurality of first switches 41, the plurality of light emitting elements 50, the second switch 42 and the buzzer 60.

As shown in fig. 2 and 3, in the present embodiment, the housing 80 is provided with a first socket 81 and a second socket 82. The first socket 81 and the second socket 82 are electrically connected to the main board 70. The first detection end of each first branch 6 is arranged at the first interface 81. The second detection end of each second branch 7 is arranged at the second socket 82. The first plug 21 of the microcomputer cable 10 to be tested can be plugged into the first socket 81. The second plug 22 of the microcomputer cable 10 is pluggably mated with the second jack 82. The first interface 81 is arranged to facilitate the electrical connection of the first detection end with the first plug 21 of the microcomputer cable 10 to be detected, and the second interface 82 is arranged to facilitate the electrical connection of the second detection end with the second plug 22 of the microcomputer cable 10 to be detected.

As shown in fig. 2, in the present embodiment, the box 80 is further provided with a power supply case 83 and a standby case, and the power supply 30 is mounted in the power supply case 83. The power supply case 83 is provided to facilitate the housing 80 to house the power supply 30. The fault detection device needs to detect regularly, and if the component is found to be damaged, the component should be replaced in time, a plurality of spare components and batteries can be stored in the spare shell of this embodiment, and the component can be replaced by oneself when needed.

As shown in fig. 2, in the present embodiment, the case 80 includes a first side portion and a second side portion which are oppositely disposed, and a third side portion and a fourth side portion which are connected between the first side portion and the second side portion. The power supply housing 83 is located within the first side. The spare housing is located within the second side. The first and

second sockets

81, 82 are located on the third side. The cover 90 is pivotally connected to the fourth side. The first and

second insertion ports

81 and 82 are located on the third side portion, and the first and

second insertion ports

81 and 82 are located on the same side of the box 80, so that the first and

second plugs

21 and 22 can be conveniently inserted and connected during detection.

As shown in fig. 2, in the present embodiment, the box 80 is further provided with a through hole 84 through which the second switch 42 passes. Thus, the box 80 can avoid the second switch 42, so that the second switch 42 is exposed outside the box 80 for convenient operation. The sidewall of the case 80 corresponding to the buzzer 60 is provided with an air hole 85. The provision of the ventilation hole 85 facilitates the buzzer 60 to transmit sound to the outside of the case 80 as much as possible. The inner wall of the cover 90 is provided with a mounting portion 91. The position of the mounting portion 91 may be provided with a specification, which facilitates the reading of the specification by the verifier when the verifier stamps on the cover body 90.

As shown in fig. 2 to 11, in the present embodiment, thirty-two first switches are sequentially denoted by S1 to S32, thirty-two light emitting elements are sequentially denoted by L1 to L32, the power supply 30 is denoted by E, the buzzer 60 is denoted by F, and the second switch 42 is denoted by S, and the fault detection apparatus of the present embodiment is specifically used as follows:

(1) each of the first detection terminals is electrically connected to a first end of a respective conductor of the first plug 21 to be detected. Each second detection terminal is electrically connected to the first terminal of the respective conductor of the second plug 22 to form a loop.

(2) Taking two first switches 41 corresponding to two conductors in the microcomputer cable 10 one to one and two light emitting elements 50 corresponding to the two first switches one to one as an example, one first switch is S1, the other first switch is S2, one light emitting element is L1, and the other light emitting element is L2. The solder lines of the second plug 22 of the microcomputer cable are connected together at the factory, so the solder lines of the second plug 22 of the microcomputer cable are not faulty by default. The principle of solder line fault finding and verification for the first plug 21 is as follows:

as shown in FIGS. 6 and 7, when the bonding wire between the micro-computer cable 10 and the first plug 21 is broken, L1 is lighted after the second switch 42 is closed and S1 is formed into a loop, and it can be determined that the bonding wire in the loop of S1 and L1 is normal. After the second switch 42 and the S2 are closed to form a loop, the loop cannot be closed, the L2 is not lit, and the buzzer 60 does not sound, so that it can be determined that the welding wire in the loop of S2 and L2 is not conducted, and further it can be inferred whether the welding wire is missed or the welding point is broken, and the first plug 21 is opened to find a problem.

As shown in fig. 8 and 9, when the welding lines of the microcomputer cable 10 and the first plug 21 are crossed, after the second switch 42 is closed and the second switch S1 form a loop, L1 is not lighted, L2 is lighted, after the second switch 42 is closed and the second switch S2 form a loop, L1 is lighted, L2 is not lighted, and the corresponding L1 and L2 of the closed S1 and S2 are lighted in the opposite way. It can be concluded from this that the weld line in the loop of S1 and L1 is reversed from the terminal weld line in the loop of S2 and L2. The first plug 21 is opened to find a problem.

As shown in fig. 10 and 11, when the bonding wires of the microcomputer cable 10 and the first plug 21 are mixed, L1 and L2 are simultaneously lighted after the second switch 42 is closed and S1 form a loop, and L1 and L2 are simultaneously lighted after the second switch 42 is closed and S2 form a loop. It can be determined that the weld lines in the loop of S1 and L1 are mixed with the weld lines in the loop of S2 and L2. In general, the mixed connection between the bonding wires is mostly caused by the leakage of solder, so that the first plug 21 is opened to find an error.

(3) When the length of the microcomputer cable 10 is insufficient, an extension patch cord is connected to the microcomputer cable 10, the extension patch cord is a microcomputer cable made of thirty-two cores, and a first plug 21 and a second plug 22 are arranged at two ends of the microcomputer cable respectively. Or one is the first plug 21 and the other is the socket, and the length of the extended patch cord is about 20 meters. This allows verification even if both the first plug 21 and the second plug 22 are fixed.

Therefore, the technical solution of the present embodiment can complete the verification of all the terminals soldered between the first end of the microcomputer cable 10 and the second end of the first plug 21, when the first plug 21 and the second plug 22 are inserted into the first socket 81 and the second socket 82, respectively.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A fault detection device, comprising:

the detection circuit comprises a main circuit (5), a plurality of first branches (6) and a plurality of second branches (7), wherein the first branches (6) and the second branches (7) are arranged in a one-to-one correspondence manner, one first branch (6) and one second branch (7) which are arranged in a corresponding manner form a detection group, the first branches (6) are connected with the main circuit (5) in parallel, the second branches (7) are connected with the main circuit (5) in parallel, the free end of each first branch (6) forms a first detection end, and the free end of each second branch (7) forms a second detection end;

a power supply (30) provided in the main path (5);

a plurality of first switches (41), one of said first switches (41) being disposed on each of said first branches (6);

a plurality of light emitting elements (50), one light emitting element (50) being arranged on each of the second branches (7).

2. The fault detection device according to claim 1, characterized in that it further comprises a buzzer (60), said buzzer (60) being arranged in said main circuit (5).

3. The fault detection device according to claim 2, characterized in that the detection circuit further comprises a second switch (42) arranged in the main circuit (5).

4. The fault detection device according to claim 1, wherein the power source (30) is a battery, the first switch (41) is a push button switch, and the light emitting element (50) is a light emitting diode.

5. The failure detection device according to claim 3, characterized in that the failure detection device further comprises a main board (70), the detection circuit being provided on the main board (70).

6. The failure detection device according to claim 5, further comprising a case (80) and a cover body (90) openably and closably provided on the case (80), the main board (70) being mounted in the case (80).

7. The fault detection device according to claim 6, wherein a first socket (81) and a second socket (82) are disposed on the box (80), the first socket (81) and the second socket (82) are both electrically connected to the main board (70), the first detection end of each first branch (6) is disposed at the first socket (81), the second detection end of each second branch (7) is disposed at the second socket (82), the first plug (21) of the microcomputer cable (10) to be detected is pluggable and is matched with the first socket (81), and the second plug (22) of the microcomputer cable (10) is pluggable and is matched with the second socket (82).

8. The failure detection device according to claim 7, wherein a power supply housing (83) and a standby housing are further provided on the case (80), and the power supply (30) is mounted in the power supply housing (83).

9. The failure detection device according to claim 8, wherein the case (80) includes a first side portion and a second side portion which are arranged oppositely, and a third side portion and a fourth side portion which are connected between the first side portion and the second side portion, the power supply housing (83) is located in the first side portion, the backup housing is located in the second side portion, the first socket (81) and the second socket (82) are both located on the third side portion, and the cover (90) is pivotably connected to the fourth side portion.

10. The fault detection device according to claim 6, wherein the box body (80) is further provided with a through hole (84) for the second switch (42) to penetrate through, the side wall of the box body (80) corresponding to the buzzer (60) is provided with an air hole (85), and the inner wall of the cover body (90) is provided with an installation part (91).