CN214900885U - Outdoor LEU test system - Google Patents

Abstract

The utility model discloses an outdoor LEU test system, including industrial control computer, LEU communication interface unit, photoelectric conversion module, transponder read-write tool, active transponder, controllable power and switching recovery relay, wherein the data port of industrial control computer connects to photoelectric conversion module through LEU communication interface unit, and photoelectric conversion module is connected with the S interface of the outdoor LEU to be tested; meanwhile, the industrial control computer is connected with a reading and writing tool of the transponder, and the reading and writing tool of the transponder reads the message sent by the active transponder in a wireless mode; the active responder is connected with a C interface of the tested outdoor LEU, and the tested outdoor LEU is connected with a simulation load. The utility model discloses simulate outdoor LEU's true operating condition, realized the test of outdoor LEU function and performance, improved efficiency of software testing and measuring rate of accuracy, reduced intensity of labour, guaranteed the uniformity and the accurate nature of test.

Description

Outdoor LEU test system

Technical Field

The utility model relates to a railway signal equipment detects application technique, specifically is an outdoor LEU test system.

Background

An outdoor LEU (line Electronic Unit) is an important component of ground equipment of a transponder transmission system, can periodically receive transmission messages from external equipment (ground train control centers and the like) through a serial communication interface, converts the transmission messages into message information, converts the message information into a C interface signal after circuit signal processing, and sends the C interface signal to transponder equipment, so that the remote transmission problem is solved. After the outdoor LEU is used for a period of time on site, the function test of each module needs to be carried out regularly.

At present, testing of each module in the outdoor LEU is completed manually, efficiency is low, testing errors are large, labor intensity is high, testing range is single, and the mode cannot simultaneously realize function and performance testing of the outdoor LEU in production and research and development processes.

SUMMERY OF THE UTILITY MODEL

To each module test among the prior art in the outdoor LEU have inefficiency, the error is big, can not realize simultaneously that outdoor LEU is not enough at function and capability test etc. of production and research and development in-process, the to-be-solved technical problem of the utility model is to provide one kind can test outdoor LEU, also can be used to outdoor LEU in the production and the outdoor LEU test system of capability test of research and development in-process.

In order to solve the technical problem, the utility model discloses a technical scheme is:

the utility model provides an outdoor LEU test system, including industrial control computer, LEU communication interface unit, photoelectric conversion module, transponder read-write tool, active transponder, controllable power and switching recovery relay, wherein the data port of industrial control computer connects to the photoelectric conversion module through LEU communication interface unit, and the photoelectric conversion module is connected with the S interface of the outdoor LEU to be tested; meanwhile, the industrial control computer is connected with a reading and writing tool of the transponder, and the reading and writing tool of the transponder reads the message sent by the active transponder in a wireless mode; the active responder is connected with a C interface of the tested outdoor LEU, and the tested outdoor LEU is connected with an analog load.

The analog load is connected with the C interface of the outdoor LEU to be tested, the analog load is respectively connected with the oscilloscope and the frequency spectrograph, and signals output by the oscilloscope and the frequency spectrograph are respectively connected to the network communication port of the industrial control computer.

The utility model discloses still have the switching recovery relay, a set of contact that switches the recovery relay is connected with surveyed outdoor LEU switching state end, and another group's contact that switches the recovery relay simultaneously connects back to the IO input port of industrial control computer.

The transponder reading and writing tool comprises a core control module, an energy sending module, a message receiving module and a message demodulating and decoding module, wherein the core control module receives a command sent by an industrial control computer and outputs a control instruction to the energy sending module, the energy sending module sends energy to a transponder, the message receiving module receives a message sent by the transponder and transmits the message to the message demodulating and decoding module, and the message demodulating and decoding module sends the analyzed message back to the industrial control computer through the core control module.

The utility model has the following beneficial effects and advantages:

1. compared with the prior art, the utility model discloses simulate outdoor LEU's true operating condition, can realize outdoor LEU function and capability test in production and research and development process simultaneously, improved efficiency of software testing and measuring rate of accuracy, reduced intensity of labour.

2. The utility model uses the test method that the industrial computer upper computer reads the instrument and meter for the test of the performance of the C interface, thereby ensuring the consistency and the accuracy of the test; the controllable power supply is controlled by the upper computer of the industrial computer, so that automatic testing of two LEUs inside the outdoor LEU is automatically switched, and whether switching is realized or not is supervised by reading the state of the switching recovery relay.

3. The utility model discloses a self-made transponder reading and writing instrument, accessible industrial computer's host computer software realizes the control to message reading and writing instrument, and message reading and writing instrument can set up frequency, the number of times of reading the message as required, can carry out analysis and save to the message content that reads out.

Drawings

FIG. 1 is a block diagram of an outdoor LEU test system of the present invention;

fig. 2 is a block diagram of the structure of the reading and writing tool of the transponder of the present invention.

Detailed Description

The invention will be further explained with reference to the drawings attached to the specification.

As shown in fig. 1, the utility model provides an outdoor LEU test system, including industrial control computer 1, LEU communication interface unit 2, photoelectric conversion module 3, transponder read-write tool 4, active transponder 5, controllable power 6 and switching recovery relay 7, wherein the data port (USB port) of industrial control computer 1 connects to photoelectric conversion module 3 through LEU communication interface unit 2, and photoelectric conversion module 3 is connected with the S interface of the outdoor LEU 11 under test; meanwhile, the industrial control computer 1 is connected with a reading and writing tool 4 of the transponder, the reading and writing tool 4 of the transponder is in wireless communication connection with the active transponder 5, and the reading and writing tool of the transponder reads the message sent by the active transponder in a wireless mode; the active transponder 5 is connected with a C interface of the tested outdoor LEU 11, and the tested outdoor LEU 11 is connected with an analog load 10.

The analog load 10 is connected with a C interface of the tested outdoor LEU 11, the analog load 10 is respectively connected with the oscilloscope 8 and the spectrometer 9, and signals output by the oscilloscope 8 and the spectrometer 9 are respectively connected to a network communication port of the industrial control computer 1.

The utility model discloses still have and switch recovery relay 7, switch recovery relay 7's a set of contact and the switching state end of being surveyed outdoor type LEU 11 and be connected, switch recovery relay 7's another group contact simultaneously and connect back to the IO input port of industrial control computer.

As shown in fig. 2, the reading and writing tool of the transponder includes a core control module, an energy sending module, a message receiving module and a message demodulating and decoding module, wherein the core control module receives a command sent by the industrial control computer and outputs a control command to the energy sending module, the energy sending module sends energy to the transponder, the message receiving module receives a message sent by the transponder and transmits the message to the message demodulating and decoding module, and the message demodulating and decoding module sends the analyzed message back to the industrial control computer through the core control module.

The industrial control computer 1 is sequentially connected with an LEU communication interface unit 2 and a photoelectric conversion module 3; meanwhile, the industrial control computer 1 is also connected with a transponder reading and writing tool 4 and an active transponder 5. The oscilloscope 8 and the spectrometer 9 are both connected with an analog load 10, and the analog load 10 is connected with an outdoor LEU 11 to be tested. And the switching recovery relay 7 is connected with an outdoor LEU 11 to be tested.

The industrial control computer 1 is provided with upper computer software, and the upper computer software realizes simulation of S interface communication.

The utility model discloses transponder read write instrument in the system independently develops and is applicable to this system, and core control module, energy transmission module, message receiving module and message demodulation decoding module wherein all adopt current hardware circuit structure to realize. The responder read-write tool is provided with a wired USB port and can be connected with an industrial control computer through the USB port, and the responder read-write tool controls and reads the message information of the active responder according to the control command sent by the industrial control computer and sends the message information to the industrial control computer.

The industrial control computer sends a command to the core control module through the USB interface, the energy sending module sends 27MHz energy to activate the transponder, the message receiving module receives a message sent by the transponder, the message demodulating and decoding module analyzes the transponder message, and the core control module sends the analyzed message back to the industrial control computer through the USB interface.

The utility model discloses outdoor LEU test system realizes through following step:

1) the industrial control computer 1 is provided with upper computer software which simulates S interface communication, and the communication information is converted into an S interface communication protocol which accords with the LEU communication and an optical fiber communication physical channel which is suitable for remote transmission through the LEU communication interface unit 2 and the photoelectric conversion module 3, and a communication interface of an outdoor LEU 11 to be tested outside a test room is tested;

2) the industrial control computer 1 controls the transponder reading and writing tool 4 to read the message information of the active transponder 5, compares the read message data with the sent data, and realizes the detection of a communication data channel and a physical channel and the detection of the output signal of the tested outdoor LEU 11.

3) The simulation load is connected with the outdoor LEU 11 to be tested through the C interface, various open-short circuit working states of the outdoor LEU are tested through the simulation load, and meanwhile the performance of the C interface of the LEU equipment is tested through the simulation load in cooperation with the oscilloscope and the frequency spectrometer equipment.

The utility model also comprises a step 4) of controlling the controllable power supply 6 through the industrial control computer 1 to switch the final output of two or more outdoor LEU devices, so as to realize the automatic test of two or more outdoor LEU devices; the state of the switching recovery relay 7 is read by the industrial control computer 1, and whether switching is carried out or not is monitored.

The utility model can complete the main control work of the test through the industrial control computer, including the simulation of the outdoor LEU communication S interface, the reading analysis and the message comparison of the active responder message; the oscilloscope and the frequency spectrograph measure various performance indexes of the C interface of the outdoor LEU; and driving auxiliary peripherals such as a mining relay and a module load to complete other functional tests of the outdoor LEU.

The utility model discloses well transponder read-write tool independently develops and is applicable to this system, and this equipment includes core control module, energy transmission module, message receiving module, message demodulation decoding module. The industrial control computer sends a command to the core control module through the USB interface, the energy sending module sends 27MHz energy to activate the transponder, the message receiving module receives a message sent by the transponder, the message demodulating and decoding module analyzes the transponder message, and the core control module sends the analyzed message back to the industrial control computer through the USB interface.

The utility model discloses well industrial computer's host computer software independent development is applicable to this system, realizes core control through this software.

In this embodiment, the controllable power supply is controlled to realize alternate testing of two indoor LEUs inside the outdoor LEU, and the state of the switching recovery relay is read by the industrial control computer to detect whether the LEU under the expected control is working. When the identified control is LEU equipment expected to need testing, S interface communication is simulated through upper computer software, signals are sent to an LEU communication interface unit and a photoelectric conversion module, communication information is converted into an S interface communication protocol conforming to LEU communication and an optical fiber communication physical channel adapting to remote transmission, the communication interface of an outdoor LEU to be tested outside a room is tested, at the moment, the upper computer software of the industrial control computer controls a transponder reading and writing tool to read message information of an active transponder and compares the read message data with the sent data, detection of a communication data channel and the physical channel is achieved, and detection of output signals of the outdoor LEU to be tested is achieved.

The C interface of the outdoor LEU is connected with different analog loads to test various open-short circuit working states of the outdoor LEU. And simultaneously, the performance of the C interface of the LEU equipment is tested by using the analog load in cooperation with an oscilloscope and a spectrometer. And reading data information of the oscilloscope and the spectrometer equipment by the upper computer software of the industrial control computer, and analyzing test data so as to obtain the performance index of the C interface and display the performance index.

After the test is finished, the other LEU of the two LEUs inside the outdoor LEU is tested by controlling the controllable power supply, and the state of the switching recovery relay is read by the industrial control computer to detect whether the LEU is under the expected control. The test work was performed as above.

The utility model discloses the system has simulated outdoor LEU's true operating condition, has realized the test of outdoor LEU function and performance.

Claims (4)

1. An outdoor LEU test system which characterized in that: the system comprises an industrial control computer, an LEU communication interface unit, a photoelectric conversion module, a responder reading and writing tool, an active responder, a controllable power supply and a switching recovery relay, wherein a data port of the industrial control computer is connected to the photoelectric conversion module through the LEU communication interface unit, and the photoelectric conversion module is connected with an S interface of a tested outdoor LEU; meanwhile, the industrial control computer is connected with a reading and writing tool of the transponder, and the reading and writing tool of the transponder reads the message sent by the active transponder in a wireless mode; the active responder is connected with a C interface of the tested outdoor LEU, and the tested outdoor LEU is connected with an analog load.

2. The outdoor LEU testing system of claim 1, wherein: the analog load is connected with the C interface of the outdoor LEU to be tested, the analog load is respectively connected with the oscilloscope and the frequency spectrograph, and signals output by the oscilloscope and the frequency spectrograph are respectively connected to the network communication port of the industrial control computer.

3. The outdoor LEU testing system of claim 1, wherein: and the switching recovery relay is also arranged, one group of contact points of the switching recovery relay is connected with the switching state end of the tested outdoor LEU, and the other group of contact points of the switching recovery relay is connected back to the I/O input port of the industrial control computer.

4. The outdoor LEU testing system of claim 1, wherein: the transponder reading and writing tool comprises a core control module, an energy sending module, a message receiving module and a message demodulating and decoding module, wherein the core control module receives a command sent by an industrial control computer and outputs a control instruction to the energy sending module, the energy sending module sends energy to a transponder, the message receiving module receives a message sent by the transponder and transmits the message to the message demodulating and decoding module, and the message demodulating and decoding module sends the analyzed message back to the industrial control computer through the core control module.

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