CN112834960A - Rail vehicle line conduction test system and method - Google Patents
Rail vehicle line conduction test system and method Download PDFInfo
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- CN112834960A CN112834960A CN202110014454.4A CN202110014454A CN112834960A CN 112834960 A CN112834960 A CN 112834960A CN 202110014454 A CN202110014454 A CN 202110014454A CN 112834960 A CN112834960 A CN 112834960A
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- 238000005259 measurement Methods 0.000 claims description 18
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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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/58—Testing of lines, cables or conductors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/08—Measuring resistance by measuring both voltage and current
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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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/54—Testing for continuity
Abstract
The invention discloses a rail vehicle line conduction test system and a rail vehicle line conduction test method, wherein the rail vehicle line conduction test system comprises the following steps: the intelligent testing device is configured to receive a conduction testing task issued by the electrical construction system and prompt line measuring points according to a task sequence; uploading the line conduction test result information to an electrical construction system; the electric construction system is configured to acquire information of the intelligent test device communicated with the electric construction system, screen out a corresponding conduction test task and issue the task to the intelligent test device; and receiving the test result information uploaded by the intelligent test device. The invention has simple and ordered measuring process, can finish the test by only two persons, does not need the on-site command of a third person, and improves the measuring efficiency and the measuring accuracy.
Description
Technical Field
The invention relates to the technical field of line conduction testing, in particular to a rail vehicle line conduction testing system and method.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
At present, the line conduction test of the whole motor train unit is more and more important. Along with the increase of the complexity of the vehicle functions, the corresponding vehicle lines are more complicated and complicated, and the number of cables is more and more. In order to realize electric power operation, normal use of equipment functions and reliable communication transmission, a line conduction test method and data storage of a rail transit vehicle line become more critical.
Most of the traditional conduction test methods use a buzzer (a diode conduction principle, which sounds), and a person in charge needs to command another two test persons to perform manual test according to a paper-version conduction test form. Two testers can not look over the paper version conduction test table in the test, need commander's shout the end equipment name and the return circuit line number that need test the return circuit, link up extremely inconveniently, and make mistakes easily, the conduction test efficiency is low. The whole testing process needs to manually record the testing result, which is time-consuming and labor-consuming.
Disclosure of Invention
In view of the above, the invention provides a rail vehicle line conduction test system and method, the test process is sequentially performed according to the issued test task sequence, and the system has a voice broadcast function, does not need manual guidance of a commander, and effectively improves the accuracy and efficiency of the test.
According to a first aspect of the embodiments of the present invention, there is provided a rail vehicle line conduction testing system, including:
the intelligent testing device is configured to receive a conduction testing task list issued by the electrical construction system and prompt line testing points according to the sequence of the task list; uploading the line conduction test result information to an electrical construction system;
the electric construction system is configured to acquire information of the intelligent testing device communicated with the electric construction system, screen out a corresponding conduction testing task list and issue the task list to the intelligent testing device; and receiving the test result information uploaded by the intelligent test device.
According to a second aspect of the embodiments of the present invention, there is provided a rail vehicle line conduction testing method, including:
receiving a conduction test task list;
automatically prompting the measuring point position of the current line based on the conduction test task list;
controlling the test terminals to respectively measure the on-resistance at the test point position of the current line;
and obtaining and storing the measurement result.
Compared with the prior art, the invention has the beneficial effects that:
(1) the intelligent testing device can automatically prompt the testing point position information of the conduction testing circuit according to the received conduction testing task list, the testers at two ends of the circuit can directly operate according to the prompt information, the measuring process is simple and ordered, the test can be completed by only two persons, the third person is not required to conduct on-site, and the measuring efficiency and the measuring accuracy are improved.
(2) The method has the advantages that the measurement result is directly and locally stored, the safe storage of the measurement result data is ensured, the data loss possibly caused by manual recording is saved, the data loss in the transmission process caused by the instability of the network can be prevented, all data can be locally traced, and the local measurement data query can be carried out.
(3) The invention compares the measured resistance value with the preset test threshold value, can directly judge whether the test result is qualified, and realizes the automatic comparison and interpretation of the measurement result.
Advantages of additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a schematic structural diagram of a rail vehicle line conduction test system according to an embodiment of the invention;
FIG. 2 is a schematic structural diagram of an intelligent test apparatus according to an embodiment of the invention;
FIGS. 3(a) - (b) are schematic diagrams of the two-wire method and the four-wire method, respectively;
fig. 4 is a flowchart of a rail vehicle line conduction testing method according to an embodiment of the invention.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
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, unless the context clearly indicates otherwise, and it should be understood that the terms "comprises" and "comprising", and any variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The embodiments and features of the embodiments of the present invention may be combined with each other without conflict.
Example one
According to an embodiment of the present invention, an embodiment of a rail vehicle line conduction testing system is provided, referring to fig. 1, including: an intelligent testing device and a digital electric construction system (EPE system for short); the intelligent testing device and the digital electric construction system perform data interaction through an in-plant wireless network or a web transfer server, and mainly achieve downloading of conduction testing tasks and uploading of result data of vehicle lines.
The electric construction system is configured to obtain information of an intelligent test device communicated with the electric construction system, screen out a corresponding conduction test task and issue the task to the intelligent test device; and receiving the test result information uploaded by the intelligent test device.
Specifically, before data interaction is carried out between the electrical construction system and the intelligent testing device, an authentication authorization interface is called to obtain two parameters of the equipment type and the equipment mac address of the intelligent testing device, and authentication authorization is carried out; if the authentication is successful, returning the unique number generated by the equipment in the EPE system to the intelligent test device; if the authentication is unsuccessful, a relevant error problem description is returned.
After the authentication is successful, the electric construction system provides an intelligent testing device with all unfinished automatic conduction task lists of the team where the current login personnel are located, and the intelligent testing device operators can screen own operation tasks; after the operation personnel select an operation task, the electric construction system provides the continuity test task details of the operation task to the intelligent test device, and the method specifically comprises the following steps: task ID, conduction project ID, originating device, originating sub-device, originating pin number, originating physical address, line number, terminal device, terminal sub-device, terminal pin number, terminal physical address, and the like.
As an optional implementation manner, the EPE system and the intelligent testing device perform heartbeat communication according to a set frequency, so as to obtain an online state of the intelligent testing device in time; meanwhile, the EPE system issues the real-time maintained conduction test task list to the intelligent test device.
As an optional implementation mode, the EPE system keeps synchronous with the login personnel and password information of the intelligent test device, and the login personnel and the login password information of the EPE system are synchronized into a local database when the intelligent test device is initially applied.
The intelligent later-stage testing device regularly requests the EPE system every day to acquire all latest login personnel and login password information in the EPE system, and synchronously updates the acquired information into a database of the intelligent later-stage testing device, and if the employee number exists, the intelligent later-stage testing device carries out updating operation; and if the current data does not exist, adding and inserting the data into the local database.
In this embodiment, the intelligent testing device is configured to receive a conduction test task issued by an electrical construction system, and prompt line measuring points according to a task sequence; and uploading the line conduction test result information to an electrical construction system.
Referring to fig. 2, the intelligent test apparatus specifically includes:
the main control unit is configured to generate prompt information of the line measuring points in sequence according to the received conduction test tasks; receiving and transmitting the line conduction resistance value to an electrical construction system; the prompt message at least comprises: the method comprises the steps of measuring the starting equipment, the starting sub-equipment, the starting pin number, the starting physical address, the line number, the terminal equipment, the terminal sub-equipment, the terminal pin number, the terminal physical address and the like of the line at present, so that a tester can accurately operate according to prompt information.
The main control unit selects an MCU main control chip, and after receiving the resistance value of the test circuit, the main control unit automatically compares the resistance value with a preset test threshold value in a debugging outline to judge whether the test is qualified.
And a line resistance measuring unit configured to measure an on-resistance value of the line to be measured.
The line resistance measuring unit is provided with a test meter pen with a positive electrode and a negative electrode, the two-wire connection mode or the four-wire connection mode is adopted to measure the conduction resistance of the test line, and the test principle diagrams of the two-wire method and the four-wire method are respectively given in fig. 3(a) and fig. 3 (b); placing two test meter pens at two ends of a test circuit respectively, wherein a resistor Rx is a resistance value at two ends of the test circuit to be solved, and resistors R1 and R2 are equivalent wiring resistors respectively; the current and voltage values of the test line are respectively obtained, and the resistance value of the test line can be accurately calculated according to the two values.
The four-wire method has the advantages over the two-wire method that the error of the wiring resistance is eliminated, but the wiring is more; the two-wire method has wiring resistance, but errors can be greatly reduced through calibration compensation, and the two-wire method has less wiring and higher reliability and stability.
In this embodiment, the test pen is provided with a dedicated test key, and when the test pen is placed at the test point, the key on the test pen is pressed, and the intelligent low resistance meter automatically stores the measured data, uploads the data to the digital electrical construction system, and waits for the next test step.
And the communication unit is configured to realize data interaction with the electrical construction system through a limited or wireless communication mode.
And the voice output unit is configured to perform voice output on the current prompt information of the conduction test task. The voice output unit can convert the prompt information of the line measuring point into voice to be output, and the voice output unit is communicated with a loudspeaker or a wireless earphone and can transmit the prompt voice to a tester.
In this embodiment, because the length of the test line may be far away, the testers at the two ends of the line may obtain the voice prompt information through the speakers on the intelligent test device, or obtain the voice prompt information through the wireless earphones.
Of course, the speaker or the wireless earphone can be set according to actual needs; the loudspeaker can be arranged on the two intelligent meter pens, so that two testers can clearly hear the voice playing information, and a wireless earphone does not need to be arranged.
A local storage unit configured to store test result information of the line resistance measurement unit. The local storage unit can record and store the test result information in real time, can prevent the loss in the data transmission process caused by network instability, and ensures the accuracy, integrity and traceability of data. And simultaneously, a data base is provided for local data query.
And the display unit is configured to display prompt information of the current conduction test task and provide a local query interface.
In this embodiment, the specific process of conducting the conduction test by using the device of this embodiment includes:
before the conduction test, a conduction process task list is compiled and uploaded to an EPE system.
A tester selects items, vehicle types and column numbers to be tested through the intelligent testing device, automatically generates a related task list based on the selected parameters, and downloads the task list.
Based on the task list, the voice broadcast of the conduction testing device is used for reporting the position information of the two ends of the tested circuit: line number-originating device name-pin number; terminal device name-pin number.
When the circuit conduction test is carried out, a tester can move to the starting end and the terminal of the tested circuit respectively, each person takes one test pen to confirm the position, the pen is clicked by one of the persons taking the test device to confirm after being put in place, the test is carried out to complete the conduction task, the accurate positioning of the circuit is realized, the resistance of the circuit is measured, and the equipment automatically judges whether the requirement of the resistance range of the test standard set in the conduction process design is met.
When the resistance value of the cable in the current vehicle is inconsistent, the tester can report the fault information back to the EPE system, and the technologist can perform real-time feedback and fault processing through fault description.
And after the test is finished, the intelligent testing device automatically fills in the measured resistance value and jumps to the next conduction testing task information, and the vehicle wiring conduction test is finished by analogy.
And in the whole process, voice broadcasting is used for conducting tests, and the conduction tests are completed item by item according to the downloaded tasks. In the test process, the test items are divided into an on-vehicle test part, an off-vehicle test part, a cab test part, an on-vehicle to off-vehicle part and the like according to positions. After all operations of each automatic conduction task are completed, the intelligent testing device uniformly uploads all conduction detailed results under the task by taking the testing task as a unit; comprises the following steps: temperature, humidity, operator and quality inspector information, etc.
According to the embodiment, the operation sequence can be reasonably optimized according to the equipment piece sequencing priority of the conduction process design, the test is carried out in different areas, the test sequence of testers is optimized, and the walking distance of constructors during the test is reduced.
The test data may be stored locally when the network fails.
The intelligent testing device carries out leading test according to the content of the issued testing task, implements testing process according to the content of the voice broadcast, stores the measured actual data, and has the advantages of simple and convenient testing process, high efficiency and high accuracy of testing results.
The tester can centrally process fault items through screening and can also finish an appointed task through a query search mode, the conduction test is flexible in the test process, the test process is completely finished through man-machine interaction, and errors caused by complete human confirmation errors are reduced.
After the conduction test, a tester logs in the intelligent testing device to confirm the test data result, and after the self-test is completed, another tester account is logged in to confirm the test step, the test data result and the content of completing the mutual test again. And finally, quality is confirmed by quality testing personnel, and finally, the conduction test data result is uploaded to the EPE system after the third testing is finished. The whole conduction task stores and records the time, personnel and test fault process variables of the whole operation process, and can provide data for analyzing the type, quantity, construction time and fault processing time of the test faults.
As an optional implementation mode, the whole conduction test task and the heat tracing loop resistance value measurement task are added in the conduction test task list.
The whole-section conduction test task refers to the connection of a plurality of sections of lines across a terminal block, and at the moment, the whole-section lines can be directly conducted and tested without respectively testing each section of lines; when the whole section conduction test is carried out, the line in the middle section needs to be shielded, and at the moment, for the line task needing to be shielded and measured, only three fields of the loop name, the shielding type and the criterion rule need to be maintained in a conduction task test table. For example, when three-segment lines a-B-C-D are connected across the terminal block, the test tasks a-B, B-C and C-D need to be masked off in the conduction task test table, and the test task a-D needs to be newly added.
The resistance value measurement of the heat tracing loop is the same reason, for the heat tracing loop, the separate test of a single-section line is not needed, only the whole loop needs to be directly measured, and the line shielding method is the same as the whole-section conduction test task, and is not repeated.
As an optional implementation manner, when the conduction test is executed according to the conduction task, the problem of a walking path is involved, and due to the existence of attributes at two ends of the cable, the position of the originating device and the position of the terminal device determine the position of a measured point of the cable. The method is divided into driver's cabs according to the test parts of the motor train unit, wherein the driver's cabs are arranged in the areas of getting under the train, getting on the train under the train, getting off the train and the like. In the embodiment, the test equipment is assigned with the priority, the sequencing of the conduction tasks is set according to the equipment priority sequencing, and the cable test operation sequence can be reasonably arranged; the walking path of the tester in the conduction test testing process is greatly reduced, so that the tester can work according to the vehicle area, and ineffective redundant walking in the testing process is reduced.
The whole test process of this embodiment is from traditional paper version manual command school line, has become intelligent networking task operation. The conduction task is divided into test areas for completing conduction tests from the bottom layer through conduction process design, and walking paths of conduction test constructors are defined and optimized through equipment priority, so that the construction efficiency is improved, and walking is reduced. The effect of the cooperative processing of the process and the constructor in the conduction task is achieved through the fault feedback function of the whole system. In the test process, the tester conducts the test through task voice broadcasting and completes the conduction task item by item. The conduction characteristic of the cable is automatically judged, and the resistance value of the measuring cable is recorded and uploaded to the system, so that the test result is more accurate. The parameters of the whole test whole process are captured, the line conduction result is not recorded singly, but the data result of the conduction task is confirmed through three tests of self-checking, mutual testing and quality testing, and the operation time, the fault type, the fault quantity, the fault processing time, the information of the operator and the like are all captured and stored. The whole conduction testing process is transparent. The whole process recording of the conduction test data, the voice broadcast conduction task leading test, the fault processing mechanism based on the system and the zoning and line optimization processing of the test process are achieved.
Example two
According to an embodiment of the present invention, an embodiment of a rail vehicle line conduction testing method is provided, and with reference to fig. 4, the method includes the following steps:
step S101: receiving a conduction test task list;
step S102: automatically prompting the measuring point position of the current line based on the conduction test task list;
step S103: controlling the test terminals to respectively measure the on-resistance at the test point position of the current line;
step S104: and obtaining and storing the measurement result.
It should be noted that, the specific implementation process of the method has been described in detail in the first embodiment, and is not described herein again.
As an optional implementation manner, before receiving the conduction test task list, the method further includes: the upper computer at the transmitting end of the guide test task list transmits the equipment type and the equipment mac address parameter for authentication and authorization; if the authentication is successful, returning the unique number generated by the equipment in the EPE system to the intelligent test device; if the authentication is unsuccessful, a relevant error problem description is returned.
As an optional implementation manner, after the measurement result is obtained, the resistance value of the line conduction test is compared with a preset test threshold value, and whether the line test result is qualified is determined.
And then, uploading the specific measurement result information to an upper computer at a transmission end of the conduction test task list, namely the digitalized electrical construction system in the first embodiment.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.
Claims (13)
1. A rail vehicle line conduction test system, comprising:
the intelligent testing device is configured to receive a conduction testing task list issued by the electrical construction system and prompt line measuring points according to a task sequence; uploading the line conduction test result information to an electrical construction system;
the electric construction system is configured to acquire information of the intelligent testing device communicated with the electric construction system, screen out a corresponding conduction testing task list and issue the task list to the intelligent testing device; and receiving the test result information uploaded by the intelligent test device.
2. The rail vehicle line conduction test system as claimed in claim 1, wherein the intelligent test apparatus comprises:
the main control unit is configured to generate prompt information of the line measuring points in sequence according to the received conduction test tasks; receiving and transmitting the line conduction resistance value to an electrical construction system;
a line resistance measurement unit configured to measure an on-resistance value of a line to be measured;
the communication unit is configured to realize data interaction with the electric construction system through a limited or wireless communication mode;
and the voice output unit is configured to perform voice output on the current prompt information of the conduction test task.
3. The rail vehicle line conduction test system according to claim 2, wherein the prompt message at least includes: the starting terminal equipment, the starting pin number, the starting physical address, the line number, the terminal equipment, the terminal sub-equipment, the terminal pin number and the terminal physical address of the current measurement line.
4. The rail vehicle line conduction testing system of claim 2, wherein the voice output unit is connected with a speaker and/or a wireless earphone.
5. The rail vehicle line conduction test system of claim 2, further comprising: a local storage unit configured to store test result information of the line resistance measurement unit.
6. The rail vehicle line conduction test system of claim 2, further comprising: and the display unit is configured to display prompt information of the current conduction test task.
7. The rail vehicle line conduction test system according to claim 1, wherein the intelligent test device and the electrical construction system communicate with each other through a wireless network or a web transit server.
8. The rail vehicle line conduction test system according to claim 7, wherein before the intelligent test device communicates with the electrical construction system, authentication and authorization are performed; and the electrical construction system calls an authentication authorization interface to acquire the equipment type and the equipment mac address parameter of the intelligent testing device for authentication, and returns a unique number to the intelligent testing device after the authentication is successful.
9. A rail vehicle line conduction test method is characterized by comprising the following steps:
receiving a conduction test task list;
automatically prompting the measuring point position of the current line based on the conduction test task list;
controlling the test terminals to respectively measure the on-resistance at the test point position of the current line;
and obtaining and storing the measurement result.
10. The rail vehicle line conduction test method according to claim 1, before receiving the conduction test task list, further comprising: and sending the equipment type and the equipment mac address parameter to the upper computer at the transmitting end of the guide test task list for authentication and authorization.
11. The rail vehicle line conduction test method according to claim 1, wherein after the measurement result is obtained, a resistance value of the line conduction test is compared with a preset test threshold value to determine whether the line test result is qualified.
12. The rail vehicle line conduction test method according to claim 1, further comprising: adding the whole section of conduction test task and the heat tracing loop resistance value measurement task in the conduction test task list; for the line task needing the shielding measurement, three fields of a loop name, a shielding type and a criterion rule are maintained.
13. The rail vehicle line conduction test method according to claim 1, further comprising: and setting the priority of the test equipment according to the test part of the motor train unit, and setting the sequence of the conduction tasks based on the priority sequence.
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| CN115366949A (en) * | 2022-08-25 | 2022-11-22 | 武汉迪昌科技有限公司 | Train run-through line detection method and system based on comprehensive detection equipment |
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Application publication date: 20210525 |