CN111935631A - Network quality testing system and method for rail transit vehicle-mounted wireless system - Google Patents

Abstract

The invention provides a network quality testing system and method for a rail transit vehicle-mounted wireless system, the system comprising: a frequency sweep antenna (1), a frequency sweep module (2), a positioning module (3), a processor (4), a frequency sweep antenna (1), a frequency sweep module (2), a The antenna (1) is connected to the frequency sweeping module (2), the frequency sweeping module (2) is connected to the processor (4), and the positioning module (3) is connected to the processor (4); the frequency sweeping antenna (1) is used for collecting tracks For the wireless signal of the train, the frequency sweeping module (2) is used to obtain the wireless signal of the target frequency band; the positioning module (3) is used to determine the kilometer mark corresponding to the current position of the rail train; the processor (4) is loaded with test software (5) , the test software (5) is used to analyze the network performance parameters of the wireless signal of the target frequency band and the kilometer mark corresponding to the current position of the rail train, and display the network quality measurement results. The system operation in the present invention is more convenient, fast, simple and practical, and has the function of a kilometer marker.

Description

Network quality testing system and method for rail transit on-board wireless system

technical field

The invention relates to the technical field of wireless communication, and in particular, to a network quality testing system and method of a rail transit vehicle-mounted wireless system.

Background technique

With the vigorous development of urban rail transit in my country, the rapid growth of operating mileage, the distribution of signal cables and buildings is becoming more and more dense, and the network signal propagation environment is becoming more and more complex, resulting in more and more network coverage problems along the existing rail lines. .

At present, the network quality test along the track is mainly measured by the traditional spectrum analyzer. However, this method has the disadvantages of complicated operation, time-consuming and labor-intensive detection, high price, and lack of the function of kilometer marker.

SUMMARY OF THE INVENTION

Aiming at the defects in the prior art, the purpose of the present invention is to provide a network quality testing system and method for a rail transit vehicle-mounted wireless system.

In a first aspect, the present invention provides a network quality test system for a rail transit vehicle wireless system, including: a frequency sweep antenna, a frequency sweep module, a positioning module, and a processor, wherein the frequency sweep antenna is connected to the frequency sweep module, and the frequency sweep antenna is connected to the frequency sweep module. The frequency sweeping module is connected with the processor, and the positioning module is connected with the processor; wherein:

The frequency sweep antenna is used to collect the wireless signal of the rail train, and transmit the wireless signal to the frequency sweep module;

The frequency sweeping module is used to obtain the wireless signal of the target frequency band;

The positioning module is used to determine the kilometer mark corresponding to the current position of the rail train;

The processor is loaded with test software, and the test software is used to analyze the network performance parameters of the wireless signal in the target frequency band and the kilometer mark corresponding to the current position of the rail train, and display the network quality measurement result.

Optionally, the frequency sweep antenna is connected to the frequency sweep module through a radio frequency interface.

Optionally, the frequency sweeping module is connected to the processor through a USB interface.

Optionally, the positioning module is connected to the processor through a USB interface, and the positioning module determines the kilometer mark corresponding to the current position of the rail train according to the radiation signal strength of the leaky cable along the track and the length between the sources of the leaky cable.

Optionally, the processor is configured to set a target frequency band for wireless signal detection, and dynamically display network performance parameters of the wireless signal in the target frequency band and a kilometer marker corresponding to the current position of the rail train; wherein, the target frequency band is The network performance parameters of the wireless signal include: reference signal received power, received signal strength, reference signal received quality, and signal-to-noise ratio.

In a second aspect, the present invention provides a method for testing the network quality of a rail transit on-board wireless system, applying the network quality testing system for a rail transit on-board wireless system described in any one of the first aspects, and performing the following steps:

During the running process of the rail train, the wireless signal of the rail train is collected through the frequency sweep antenna 1;

Obtain the wireless signal of the target frequency band from the wireless signal through the frequency sweeping module;

Determine the kilometer mark corresponding to the current position of the rail train through the positioning module;

The network performance parameters of the wireless signal in the target frequency band and the kilometer mark corresponding to the current position of the rail train are analyzed by the test software loaded in the processor, and the network quality measurement result is displayed.

Optionally, the kilometer mark corresponding to the current position of the rail train is determined by the positioning module, including:

According to the radiation signal strength of the leaky cable along the track and the length between the sources of the leaky cable, the kilometer mark corresponding to the current position of the rail train is determined.

Optionally, the network performance parameters of the wireless signal of the target frequency band and the kilometer mark corresponding to the current position of the rail train are analyzed by the test software loaded in the processor, and the network quality measurement results are displayed, including:

Dynamically display the network performance parameters of the wireless signal in the target frequency band and the kilometer mark corresponding to the current position of the rail train; wherein, the network performance parameters of the wireless signal in the target frequency band include: reference signal received power, received signal strength, reference Signal reception quality, signal-to-noise ratio.

Compared with the prior art, the present invention has the following beneficial effects:

The present invention provides a system and method for testing the network quality of a rail transit vehicle-mounted wireless system. By using automated testing methods, the testing rate is faster, the efficiency is higher, and the function of kilometer marking is provided compared with the traditional spectrum analyzer testing. During the testing process In the test software, the collected data along the track will be automatically analyzed, and the real-time display of the measurement results will be realized.

Description of drawings

Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

Fig. 1 is the structural representation of the network quality test system of rail transit vehicle-mounted wireless system provided by the present invention;

In the picture:

1- Sweep antenna;

2- Frequency sweep module;

3-Positioning module;

4 - processor;

5- Test the software.

Detailed ways

The present invention will be described in detail below with reference to specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that, for those skilled in the art, several changes and improvements can be made without departing from the inventive concept. These all belong to the protection scope of the present invention.

The present invention provides a network quality testing system for a rail transit vehicle-mounted wireless system, comprising: a frequency sweep antenna 1, a frequency sweep module 2, a positioning module 3, and a processor 4. The frequency sweep antenna 1 is connected to the frequency sweep module 2, and the frequency sweep module 2 It is connected with the processor 4, and the positioning module 3 is connected with the processor 4; wherein: the frequency sweep antenna 1 is used to collect the wireless signal of the rail train, and transmit the wireless signal to the frequency sweep module 2; the frequency sweep module 2 is used to obtain the target frequency band The positioning module 3 is used to determine the kilometer mark corresponding to the current position of the rail train; the processor 4 is loaded with test software 5, and the test software 5 is used to correspond to the network performance parameters of the wireless signal of the target frequency band and the current position of the rail train Kilometers are analyzed and network quality measurements are displayed.

In this embodiment, a frequency sweep antenna, a frequency sweep module, a positioning module, a processor and test software are used to measure the wireless signals along the subway line. Specifically, in the testing process, the above system is placed on the rail train, the frequency sweep module and the positioning module continuously send the measured data to the processor, and the measurement data is analyzed and output through the built-in test software of the processor. Real-time measurement results. Compared with the traditional spectrum analyzer, the above system is more convenient, fast, simple and practical to operate, and has the function of kilometer mark.

Optionally, the frequency sweep antenna 1 is connected to the frequency sweep module 2 through a radio frequency interface.

Optionally, the frequency sweeping module 2 is connected to the processor 4 through a USB interface.

Optionally, the positioning module 3 is connected to the processor 4 through a USB interface, and the positioning module 3 determines the kilometer mark corresponding to the current position of the rail train according to the radiation signal strength of the leaky cable along the track and the length between the sources of the leaky cable.

Optionally, the processor 4 is used to set the target frequency band of the wireless signal detection, and dynamically display the network performance parameters of the wireless signal of the target frequency band and the kilometer mark corresponding to the current position of the rail train; wherein, the network of the wireless signal of the target frequency band is displayed dynamically. The performance parameters include: reference signal received power, received signal strength, reference signal received quality, and signal-to-noise ratio.

Specifically, during the actual measurement, the above system is placed on the running train, the processor 4 is started, and the target frequency band to be tested for the wireless signal is set through the test software 5 . The frequency sweeping module 2 continuously detects the wireless signal strength of a specific frequency band along the track, and transmits the detected data to the processor 4 in real time. During the test, the positioning module 3 transmits the measured position data to the processor 4 in real time. Finally, the test software 5 analyzes the kilometer mark measured by the positioning module 3 and the measurement data of the frequency sweeping module 2, and displays the network quality measurement results.

Further, the present invention also provides a method for testing the network quality of a rail transit on-board wireless system, using the network quality testing system for the rail transit on-board wireless system as shown in FIG. 1 , and performing the following steps:

Step 1: During the running process of the rail train, the wireless signal of the rail train is collected through the frequency sweep antenna 1 .

Step 2: Obtain the wireless signal of the target frequency band from the wireless signal through the frequency sweeping module 2 .

Step 3: Determine the kilometer mark corresponding to the current position of the rail train through the positioning module 3 .

Step 4: The network performance parameters of the wireless signal in the target frequency band and the kilometer mark corresponding to the current position of the rail train are analyzed by the test software 5 loaded in the processor 4, and the network quality measurement result is displayed. Exemplarily, the measurement result can be dynamically displayed through a graphical curve, wherein the abscissa shows the position information, and the ordinate represents the signal detection data.

Optionally, step 3 includes: determining a kilometer marker corresponding to the current position of the rail train according to the strength of the radiation signal of the leaky cable along the track and the length between the sources of the leaky cable.

Optionally, step 4 includes: dynamically displaying the network performance parameter of the wireless signal of the target frequency band and the kilometer marker corresponding to the current position of the rail train; wherein, the network performance parameter of the wireless signal of the target frequency band includes: Signal strength, reference signal reception quality, signal-to-noise ratio.

In this embodiment, by using the automated test method, the test speed is faster and the efficiency is higher than that of the traditional spectrum analyzer test. During the test process, the collected data along the track is automatically analyzed by the test software, and the measurement result is displayed in real time.

It should be noted that the steps in the method for testing the network quality of the rail transit on-board wireless system provided by the present invention can be implemented by using the corresponding modules, devices, units, etc. in the rail transit on-board wireless system network quality testing system. Those skilled in the art can refer to the technical solution of the system to realize the step flow of the method, that is, the embodiments in the system can be understood as preferred examples for realizing the method, which will not be repeated here.

Those skilled in the art know that, in addition to implementing the system provided by the present invention and its respective devices in the form of pure computer-readable program codes, the system provided by the present invention and its respective devices can be completely implemented by logically programming method steps to make the system provided by the present invention and its respective devices with logic gates, Switches, application-specific integrated circuits, programmable logic controllers, and embedded microcontrollers are used to achieve the same function. Therefore, the system and its various devices provided by the present invention can be regarded as a kind of hardware components, and the devices for realizing various functions included in the system can also be regarded as structures in the hardware components; The means for implementing various functions can be regarded as either a software module implementing a method or a structure within a hardware component.

Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the above-mentioned specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essential content of the present invention. The embodiments of the present application and features in the embodiments may be combined with each other arbitrarily, provided that there is no conflict.

Claims (8)

1. A network quality testing system of a rail transit vehicle-mounted wireless system is characterized by comprising: the device comprises a sweep frequency antenna (1), a sweep frequency module (2), a positioning module (3) and a processor (4), wherein the sweep frequency antenna (1) is connected with the sweep frequency module (2), the sweep frequency module (2) is connected with the processor (4), and the positioning module (3) is connected with the processor (4); wherein:

the sweep frequency antenna (1) is used for acquiring a wireless signal of a rail train and transmitting the wireless signal to the sweep frequency module (2);

the frequency sweeping module (2) is used for acquiring a wireless signal of a target frequency band;

the positioning module (3) is used for determining a kilometer post corresponding to the current position of the rail train;

the processor (4) is loaded with test software (5), and the test software (5) is used for analyzing the network performance parameters of the wireless signals of the target frequency range and the kilometer posts corresponding to the current position of the rail train and displaying the network quality measurement result.

2. The rail transit vehicle-mounted wireless system network quality testing system as claimed in claim 1, wherein the swept frequency antenna (1) is connected with the swept frequency module (2) through a radio frequency interface.

3. The rail transit vehicle-mounted wireless system network quality testing system according to claim 1, wherein the sweep frequency module (2) is connected with the processor (4) through a USB interface.

4. The network quality testing system of the rail transit vehicle-mounted wireless system according to claim 1, wherein the positioning module (3) is connected with the processor (4) through a USB interface, and the positioning module (3) determines a kilometer post corresponding to the current position of the rail train according to the strength of a leaky cable radiation signal along the rail and the length between leaky cable information sources.

5. The rail transit vehicle-mounted wireless system network quality testing system according to any one of claims 1-4, wherein the processor (4) is configured to set a target frequency band for wireless signal detection, and dynamically display network performance parameters of wireless signals of the target frequency band and kilometers posts corresponding to the current position of a rail train; wherein the network performance parameters of the wireless signals of the target frequency band include: reference signal received power, received signal strength, reference signal received quality, signal to noise ratio.

6. A rail transit vehicle-mounted wireless system network quality testing method is characterized in that the rail transit vehicle-mounted wireless system network quality testing system according to any one of claims 1-5 is applied, and the following steps are executed:

in the running process of the rail train, acquiring a wireless signal of the rail train through the sweep frequency antenna (1);

acquiring a wireless signal of a target frequency band from the wireless signal through the sweep frequency module (2);

determining a kilometer post corresponding to the current position of the rail train through a positioning module (3);

and analyzing the network performance parameters of the wireless signals of the target frequency range and the kilometer post corresponding to the current position of the rail train through test software (5) loaded in a processor (4), and displaying the network quality measurement result.

7. The network quality testing method of the rail transit vehicle-mounted wireless system according to claim 6, wherein the step of determining the kilometer post corresponding to the current position of the rail train through the positioning module (3) comprises the following steps:

and determining the kilometer post corresponding to the current position of the rail train according to the leaky cable radiation signal intensity along the rail and the length between leaky cable information sources.

8. The network quality testing method of the rail transit vehicle-mounted wireless system according to claim 6, wherein the network performance parameters of the wireless signals of the target frequency band and the kilometer posts corresponding to the current position of the rail train are analyzed by the testing software (5) loaded in the processor (4), and the network quality measurement results are displayed, and the method comprises the following steps:

dynamically displaying the network performance parameters of the wireless signals of the target frequency band and the kilometer post corresponding to the current position of the rail train; wherein the network performance parameters of the wireless signals of the target frequency band include: reference signal received power, received signal strength, reference signal received quality, signal to noise ratio.

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