CN216954910U

CN216954910U - Detection system

Info

Publication number: CN216954910U
Application number: CN202220716742.4U
Authority: CN
Inventors: 秦怀文; 郝龙斌
Original assignee: Beijing Edbao Electronic Technology Service Co ltd
Current assignee: Beijing Edbao Electronic Technology Service Co ltd
Priority date: 2022-03-29
Filing date: 2022-03-29
Publication date: 2022-07-12
Anticipated expiration: 2032-03-29

Abstract

The utility model discloses a detection system, relates to the technical field of railway systems, and aims to solve the problems that PT100 integrated input and output equipment is low in detection efficiency and cannot quickly and accurately determine specific fault positions. The detection system comprises a detection circuit and analysis equipment, the PT100 integrated input and output equipment comprises a power supply, an MVB module and a plurality of channels, the detection circuit comprises a variable resistance structure, the first end of the variable resistance structure is electrically connected with the output end of the channel, the second end of the variable resistance structure is electrically connected with the input end of the channel, and when the detection circuit is switched on, the MVB module receives different electric signals, so that the function of at least one channel is detected, and the analysis equipment is electrically connected with the MVB module. The detection system provided by the utility model is used for simulating the working environment of the PT100 integrated input and output equipment on the motor train unit so as to detect the functions of the PT100 integrated input and output equipment and quickly and accurately determine the specific fault position.

Description

Detection system

Technical Field

The utility model relates to the technical field of railway systems, in particular to a detection system.

Background

Many electrical components on the motor train unit cannot communicate with the vehicle bus per se, and the distributed input and output devices connected to the vehicle bus play a role of an intermediate bridge, so that the electrical components are connected with a compartment communication network through digital signals or analog signals, and the common distributed input and output devices comprise a PT100 integrated input and output device (MVB Compact PT100) for receiving signals sent by a PT100 temperature sensor.

In order to ensure the normal function of the PT100 integrated input and output device, at present, the PT100 integrated input and output device (MVB Compact PT100) is mainly connected to a specific working device for detection; however, the detection efficiency by this method is low, and the specific fault position cannot be determined quickly and accurately.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a detection system which is used for simulating the working environment of PT100 integrated input and output equipment (MVB Compact PT100) on a motor train unit so as to detect the functions of the PT100 integrated input and output equipment (MVB Compact PT100) and quickly and accurately determine a specific fault position.

In order to achieve the above purpose, the utility model provides the following technical scheme:

a detection system is used for detecting PT100 integrated input and output equipment of a multifunctional vehicle bus, wherein the PT100 integrated input and output equipment comprises a power supply, an MVB module and a plurality of channels, the MVB module is electrically connected with the channels, each channel is electrically connected with the power supply and comprises an output end and an input end;

the detection system comprises a detection circuit and an analysis device;

the detection circuit comprises a variable resistance structure, wherein a first end of the variable resistance structure is electrically connected with an output end of the channel, a second end of the variable resistance structure is electrically connected with an input end of the channel, and the variable resistance structure is used for enabling the MVB module to receive different electric signals when the detection circuit is switched on, so that the function of at least one channel is detected;

the analysis device is electrically connected with the MVB module.

Compared with the prior art, in the detection process of the detection system provided by the utility model, the working environment of PT100 integrated input and output equipment on a motor train unit is simulated through the detection circuit, the output end and the input end of a channel to be detected are conducted, the resistance value is changed through the variable resistance structure, and further the MVB module of the PT100 integrated input and output equipment receives different current and voltage signals, so that the function of at least one channel is detected, when the resistance is adjusted to the first resistance value by the variable resistance structure, the MVB module receives the first signal and transmits the first signal to the analysis equipment, the first result is presented through the analysis equipment, when the resistance is adjusted to the second resistance value by the variable resistance structure, the MVB module receives the second signal and transmits the second signal to the analysis equipment, the second result is presented through the analysis equipment, and when the first result is the same as the second result, the function of the channel corresponding to the detection circuit has a fault, or when the resistance values of the variable resistance structures are the same, and when a plurality of channels are detected, the result of one channel presented by the analysis equipment is different from that of other channels, the function of the channel has a fault. Based on the above, the detection system provided by the utility model can simulate the working environment of equipment on a motor train unit without being installed on the motor train unit, detect the function of the PT100 integrated input/output equipment (MVB Compact PT100), quickly and accurately determine a specific fault position when the PT100 integrated input/output equipment is repaired when the function is abnormal or fails, and test the repaired PT100 integrated input/output equipment to ensure that all faults are repaired and the function of the PT100 integrated input/output equipment is normal. .

Optionally, in the detection system described above, the detection circuit includes multiple detection sub-circuits, a first end of each detection sub-circuit is electrically connected to the output end of the corresponding channel, and a second end of each detection sub-circuit is electrically connected to the input end of the corresponding channel.

Optionally, in the detection system, the plurality of channels is 20 channels, the multi-path detection sub-circuit is 20 detection sub-circuits, and each detection sub-circuit is electrically connected to each channel in a one-to-one correspondence manner.

Optionally, in the above detection system, the detection circuit has a connection terminal electrically connected to any one of the plurality of channels.

Optionally, in the detection system, the varistor structure includes a varistor switch, a first resistor and a second resistor, the first resistor and the second resistor are arranged in parallel, and the resistances of the first resistor and the second resistor are different;

the variable resistance switch is connected with the first resistor or the second resistor so as to enable the detection circuit to be conducted.

Optionally, in the detection system, the variable resistance switch is a single-pole double-throw switch;

the first resistor is electrically connected with a first contact of the single-pole double-throw switch, and the second resistor is electrically connected with a second contact of the single-pole double-throw switch.

Optionally, in the detection system, a resistance of the first resistor is 120 ohms, and a resistance of the second resistor is 130 ohms.

Optionally, in the above detection system, the varistor structure includes a sliding varistor, a sliding sheet of the sliding varistor is electrically connected to an output end of the channel, and a resistance wire of the sliding varistor is electrically connected to an input end of the channel;

or, the slide sheet of the slide rheostat is electrically connected with the input end of the channel, and the resistance wire of the slide rheostat is electrically connected with the output end of the channel.

Optionally, in the detection system, the analysis device includes an MVB master station analyzer and a terminal;

the MVB main station analyzer is electrically connected with the MVB module, and the terminal is electrically connected with the MVB main station analyzer.

Optionally, in the detection system, the terminal includes a computer.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and not to limit the utility model. In the drawings:

fig. 1 is a detection system according to an embodiment of the present invention;

fig. 2 is another detection system according to an embodiment of the present invention.

Reference numerals:

1-PT100 integrated input-output devices; 11-a power supply; 12-a channel; 13-MVB module; 2-a detection circuit; 21-a varistor structure; 211-a first resistance; 212-a second resistance; 3-an analytical device; 31-MVB master station analyzer; 32-terminal.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

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 be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

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 specifically defined otherwise. The meaning of "a number" is one or more unless specifically limited otherwise.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other suitable relationship. 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 order to ensure that the integrated input/output device of the PT100 functions normally, the integrated input/output device of the PT100 (MVB Compact PT100) needs to be connected to a specific working device for detection, but the detection efficiency is low by the method, and a specific fault part cannot be determined quickly and accurately.

In order to solve the above technical problem, referring to fig. 1 and 2, an embodiment of the present invention provides a detection system for detecting a PT100 integrated input output device 1(MVB Compact PT100) of a multifunction vehicle bus, where the PT100 integrated input output device 1(MVB Compact PT100) includes a power supply 11, an MVB module 13, and a plurality of channels 12, where the MVB module 13 is electrically connected to the plurality of channels 12, and each channel 12 is electrically connected to the power supply 11 and includes an output end and an input end;

the detection system comprises a detection circuit 2 and an analysis device 3, wherein the detection circuit 2 comprises a variable resistance structure 21, the first end of the variable resistance structure 21 is electrically connected with the output end of the channel 12, the second end of the variable resistance structure 21 is electrically connected with the input end of the channel 12, and the variable resistance structure 21 is used for enabling the MVB module 13 to receive different electric signals when the detection circuit 2 is switched on, so that the function of at least one channel 12 is detected, and the analysis device 3 is electrically connected with the MVB module 13.

In the specific implementation process, the working environment of the PT100 integrated input/output device 1(MVB Compact PT100) on the motor train unit is simulated by the detection circuit 2, the output end and the input end of the channel 12 to be detected are conducted, the resistance value of the varistor structure 21 is adjusted to be a first resistance value, at this time, the detection circuit 2 transmits a first current signal and a first voltage signal to the PT100 integrated input/output device 1(MVB Compact PT100), the MVB module 13 receives the first signal and transmits the first signal to the analysis device 3, and presents a 16-system first result through the analysis device 3, then, the resistance value of the varistor structure 21 is adjusted to be a second resistance value, at this time, the detection circuit 2 transmits a second current signal and a second voltage signal to the PT100 integrated input/output device 1(MVB Compact PT100), the MVB module 13 receives the second signal and transmits the second signal to the analysis device 3, and presents a 16-system second result through the analysis device 3, when the first result is the same as the second result, detecting that the function of the channel 12 electrically connected to the circuit 2 is faulty; or, the resistance value of the varistor structure 21 is adjusted to be a first resistance value, and when a plurality of channels 12 are detected, and the result presented by a certain channel 12 through the analysis device 3 is different from that of other channels 12, the function of the channel 12 is failed.

As can be known from the structure and the specific implementation process of the detection system, in the case that the resistance values of the varistor structures 21 are different, if a certain channel 12 finally presents the same result through the analysis device 3, or in the case that the resistance values of the varistor structures 21 are the same, the result presented by the certain channel 12 through the analysis device 3 is different from that of other channels, the function of the corresponding channel 12 of the integrated input/output device 1 of PT100 (MVB Compact PT100) fails; through the detection system provided by the utility model, the PT100 integrated input/output equipment 1(MVB Compact PT100) does not need to be installed on a motor train unit, the working environment of equipment on the motor train unit can be simulated through the detection system, the function of the PT100 integrated input/output equipment 1(MVB Compact PT100) is detected, when the PT100 integrated input/output equipment 1(MVB Compact PT100) has abnormal function or fault and is maintained, a specific fault part can be quickly and accurately determined, and the maintained PT100 integrated input/output equipment 1(MVB Compact PT100) is tested to ensure that all faults are repaired and the function of the PT100 integrated input/output equipment is normal. .

Specifically, in the above-mentioned detection system, the detection circuit 2 includes multiple detection sub-circuits, a first end of each detection sub-circuit is electrically connected to the output end of the corresponding channel 12, and a second end of each detection sub-circuit is electrically connected to the input end of the corresponding channel 12. So set up, with multichannel detection sub-circuit with corresponding passageway 12 electricity connection back, can detect the function of the passageway 12 that the detection sub-circuit corresponds simultaneously, the signal homoenergetic that every detection sub-circuit corresponds the passageway 12 output can show one by one through analytical equipment 3, so set up, need not to dismantle the connection many times, improve detection efficiency to confirm concrete trouble position.

Preferably, referring to fig. 1, in the detection system, the plurality of channels 12 is 20 channels, the multi-path detection sub-circuit is 20 detection sub-circuits, and each detection sub-circuit is electrically connected to each channel 12 in a one-to-one correspondence manner. The conventional PT100 integrated input/output device 1(MVB Compact PT100) comprises 20 channels 12, and when the multi-channel detection sub-circuit is a 20-channel detection sub-circuit, the multi-channel detection sub-circuit is electrically connected with the 20 channels 12 in a one-to-one correspondence mode, so that detection omission is effectively avoided, and the detection efficiency and accuracy are improved.

Specifically, in the detection system described above, the detection circuit 2 has a connection terminal that can be electrically connected to any one of the plurality of channels 12. So set up, same way detection circuitry 2 can dismantle and continue to be connected with another passageway 12 electricity after having detected a passageway 12, detects another passageway 12, realizes that a detection circuitry 2 detects a plurality of passageways 12 in proper order, reduces detecting system's cost, improves detecting system's economic nature.

Specifically, referring to fig. 1, in the detection system, the varistor structure 21 includes a varistor switch, a first resistor 211 and a second resistor 212, the first resistor 211 and the second resistor 212 are arranged in parallel, the resistances of the first resistor 211 and the second resistor 212 are different, and the varistor switch is connected to the first resistor 211 or the second resistor 212 to turn on the detection circuit 2. In the detection process, the first resistor 211 is connected through the rheostatic switch, so that the circuit of the first resistor 211 is turned on, the circuit of the second resistor 212 is turned off, the first current signal and the first voltage signal are transmitted to the PT100 integrated input/output device 1(MVB Compact PT100), and the first result is displayed through the analysis device 3, then the second resistor 212 is connected through the rheostatic switch, so that the circuit of the first resistor 211 is disconnected, the circuit of the second resistor 212 is connected, the second current signal and the second voltage signal are transmitted to the integrated input/output device 1 of the PT100 (MVB Compact PT100), and the second result is displayed by the analyzing device 3, because the resistance values of the first resistor 211 and the second resistor 212 are different, the first current signal and the second current signal are different, the first voltage signal and the second voltage signal are different, when the function of the corresponding channel 12 is normal, the analysis device 3 displays that the first result and the second result should be different; therefore, when the first result is the same as the second result, the function of the corresponding channel 12 is failed, and by the arrangement, the function detection of the channel 12 of the PT100 integrated input/output device 1(MVB Compact PT100) can be completed, and the device is simple and easy to operate.

Specifically, in the above-mentioned detection system, the varistor switch is a single-pole double-throw switch, the first resistor 211 is electrically connected to a first contact of the single-pole double-throw switch, and the second resistor 212 is electrically connected to a second contact of the single-pole double-throw switch. The single-pole double-throw switch device is simple, so that the detection system is simple and easy to operate and has good economical efficiency.

In the above detection system, the first resistor 211 has a resistance of 120 ohms, and the second resistor 212 has a resistance of 130 ohms. The PT100 integrated input and output equipment 1 is mainly used for receiving signals sent by a PT100 temperature sensor on a motor train unit, and 120 ohms and 130 ohms are resistance values of the PT100 temperature sensor which frequently appear, so that the working environment of equipment on the motor train unit can be simulated more accurately, and the detection of the PT100 integrated input and output equipment 1(MVB Compact PT100) is more accurate.

Specifically, referring to fig. 2, in the above-mentioned detection system, the varistor structure 21 includes a sliding varistor, a sliding sheet of the sliding varistor is electrically connected to the output end of the channel 12, and a resistance wire of the sliding varistor is electrically connected to the input end of the channel 12; or, the slide sheet of the slide rheostat is electrically connected with the input end of the channel 12, and the resistance wire of the slide rheostat is electrically connected with the output end of the channel 12. So set up, the resistance can be adjusted in a flexible way, adjusts and tests PT100 integrated input/output equipment 1(MVB Compact PT100) many times behind the different resistance, and the testing result is more accurate.

Specifically, in the detection system, the analysis device 3 includes an MVB master station analyzer 31 and a terminal 32, the MVB master station analyzer 31 is electrically connected to the MVB module 13, and the terminal 32 is electrically connected to the MVB master station analyzer 31; illustratively, the MVB master analyzer 31 may be an MVB smart master analyzer manufactured by sincerity information technology limited. MVB master analyzer 31 can transmit the received signals to terminal 32, and analyzer software is installed on terminal 32, and the analyzer software can process and analyze the signals transmitted by MVB master analyzer 31 and present 16-ary codes, so as to determine whether each channel 12 of PT100 integrated input/output device 1(MVB Compact PT100) is functioning normally.

Specifically, in the above detection system, the terminal 32 includes a computer or the like. The computer is a common device, and is convenient for detection personnel to work.

In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. A detection system is characterized in that the detection system is used for detecting a PT100 integrated input and output device of a multifunctional vehicle bus, and the PT100 integrated input and output device comprises a power supply, an MVB module and a plurality of channels, wherein the MVB module is electrically connected with the channels, each channel is electrically connected with the power supply and comprises an output end and an input end;

the detection system comprises a detection circuit and an analysis device;

the analysis device is electrically connected with the MVB module.

2. The detection system of claim 1, wherein the detection circuit comprises a plurality of detection sub-circuits, a first terminal of each of the detection sub-circuits being electrically connected to an output terminal of a corresponding one of the channels, and a second terminal of each of the detection sub-circuits being electrically connected to an input terminal of a corresponding one of the channels.

3. The detection system according to claim 2, wherein the plurality of channels is 20 channels, and the plurality of detection sub-circuits is 20 detection sub-circuits, each of the detection sub-circuits being electrically connected to each of the channels in a one-to-one correspondence.

4. The detection system of claim 1, wherein the detection circuit has a connection terminal that can be electrically connected to any of the plurality of channels.

5. The detection system according to claim 1, wherein the varistor structure comprises a varistor switch, a first resistor and a second resistor, the first resistor and the second resistor are arranged in parallel, and the first resistor and the second resistor have different resistance values;

6. The detection system of claim 5, wherein the variable resistance switch is a single pole double throw switch;

7. The detection system according to claim 5, wherein the first resistor has a resistance of 120 ohms and the second resistor has a resistance of 130 ohms.

8. The detection system according to claim 1, wherein the varistor structure comprises a sliding varistor, a sliding piece of which is electrically connected to the output end of the channel, and a resistance wire of which is electrically connected to the input end of the channel;

or the slide sheet of the slide rheostat is electrically connected with the input end of the channel, and the resistance wire of the slide rheostat is electrically connected with the output end of the channel.

9. The inspection system of claim 1, wherein the analysis device comprises an MVB master station analyzer and a terminal;

the MVB master station analyzer is electrically connected with the MVB module, and the terminal is electrically connected with the MVB master station analyzer.

10. The detection system of claim 9, wherein the terminal comprises a computer.