Device and method for monitoring field intensity of railway platform during train running

Abstract

The invention relates to a railway platform field intensity monitoring device and method in train running, the field intensity monitoring device is arranged in a train CIR, and the field intensity monitoring device comprises a signal coupler which is arranged between a CIR antenna and a train radio station and is used for capturing a digital talkback wireless communication signal between a train and a base station; the output end of the signal coupler is in signal connection with a field intensity monitoring module, a micro-control unit and an upper computer in sequence; the field intensity monitoring module is used for scanning a plurality of channels and querying field intensity; the micro-control unit is used for controlling scanning frequency points of the field intensity monitoring module; and the upper computer is used for receiving frequency point settings needing to be scanned. Compared with the prior art, the method can monitor the field intensity of frequency points of a plurality of base stations in real time in the train communication process, and guarantees the reliability of train communication.

Description

Technical Field

[0001] The present invention relates to the technical field of train signal monitoring, and in particular to a device and method for monitoring field strength of a railway platform during a moving train. Background Art

[0002] The railway 400MHz digital wireless train dispatching communication system will be an important communication system for the next generation of railway train dispatching, and the communication system will also be transformed from analog communication system to digital communication system. When the train frequently passes through different sections during travel, it is necessary to measure the field strength of the railway platforms along the line, monitor the coverage field strength of the communication signal, and pay attention to the communication effect of the train dispatching system. However, since the radio station cannot collect and analyze the signal field strength of other frequencies while transmitting, it cannot guarantee that the train can monitor the communication signals along the line in real time during communication, which is not conducive to the reliable communication of the train. Summary of the invention

[0003] The purpose of the present invention is to overcome the defects of the above-mentioned prior art and provide a device and method for monitoring the field strength of a railway platform during a moving train.

[0004] The purpose of the present invention can be achieved by the following technical solutions:

[0005] As a first aspect of the present invention, a device for monitoring field strength of a railway platform during a moving train is provided, wherein the device is arranged inside a CIR of the train and comprises:

[0006] The signal coupler is arranged between the CIR antenna and the train radio station to capture the digital intercom wireless communication signal between the train and the base station;

[0007] The output end of the signal coupler is sequentially connected to the field intensity monitoring module, the micro control unit and the host computer;

[0008] The field strength monitoring module is used to scan multiple channels and query the field strength;

[0009] The micro control unit is used to control the scanning frequency of the field intensity monitoring module;

[0010] The host computer is used to receive the frequency setting that needs to be scanned.

[0011] As a preferred technical solution, the field intensity monitoring module detects frequency bands including: 400M frequency band, 450M frequency band or 800M frequency band.

[0012] As a preferred technical solution, one or more field strength monitoring modules are provided.

[0013] As a preferred technical solution, the plurality of field strength monitoring modules are respectively digital intercom wireless signal field strength monitoring modules of different frequency bands.

[0014] As a preferred technical solution, the signal coupler is used to monitor the received signal of the train CIR, or to monitor the sent signal of the train CIR.

[0015] As a preferred technical solution, signal couplers are provided in both the receiving and transmitting signal directions of the train CIR, and the two signal couplers are respectively connected to the field strength monitoring module to monitor the receiving and transmitting signals of the train CIR at the same time.

[0016] As a preferred technical solution, the monitoring data of the field intensity monitoring module also includes: control signaling block CSBK, packet data, and voice data.

[0017] As a second aspect of the present invention, a method for monitoring field strength on a railway platform during a moving train is provided, the method comprising the following steps:

[0018] Arrange the above-mentioned railway platform field strength monitoring device for a moving train, which includes a signal coupler, a field strength monitoring module and a micro control unit;

[0019] Set the frequency points to be scanned through the host computer;

[0020] The microcontroller controls the field strength monitoring module to switch channels and query the field strength in sequence based on the frequency points to be scanned;

[0021] When all channel field strength queries are completed, the scan results are output to the host computer and the channel field strength query is returned to the loop.

[0022] As a preferred technical solution, the method is provided with a plurality of field strength monitoring modules, and the plurality of field strength monitoring modules respectively and simultaneously monitor signals of different frequency bands.

[0023] As a preferred technical solution, the method monitors the train receiving signal, or monitors the train transmitting signal, or monitors the train transmitting and receiving signals at the same time.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The present invention installs a digital intercom wireless signal field strength monitoring module between the CIR antenna inside the train CIR and the communication radio station, uses a signal coupling module to receive the downlink signal transmitted by the base station of the 400M digital wireless train modulation system along the railway, and scans the frequency points of each base station through the field strength monitoring module, so as to realize real-time monitoring of the field strength of multiple base station frequencies during the train communication process. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the arrangement of a railway platform field strength monitoring device during a moving train according to the present invention;

[0027] Figure 2It is a structural schematic diagram of a device for monitoring field strength of a railway platform during a moving train according to the present invention;

[0028] Figure 3 This is a schematic diagram of the change in signal strength when the train is moving;

[0029] Figure 4 This is a flow chart of a method for monitoring field strength at a railway platform during a moving train according to the present invention;

[0030] The numbers in the figure are as follows: 1. Field strength monitoring device, 11. Signal coupler, 12. Field strength detection module, 13. Micro control unit, 14. Host computer, 2. Train CIR, 21. CIR antenna, 22. Radio station, 3. Base station. DETAILED DESCRIPTION

[0031] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0032] Example 1

[0033] As one of the specific implementation examples of the present invention, a device for monitoring field strength of a railway platform during a moving train is shown in FIG. Figure 1 As shown, the present invention installs a 400MHz digital intercom wireless signal field strength monitoring module inside the train's locomotive integrated wireless communication equipment CIR, and uses the CIR antenna to receive the downlink signal transmitted by the 400M digital wireless train modulation system base station along the railway. Figure 2 As shown, the field strength monitoring device 1 is arranged inside the train CIR 2, and is composed of a 400MHz digital intercom wireless signal field strength monitoring module, an MCU micro control unit 13 and a signal coupler 11; wherein the signal coupler is arranged between the CIR antenna and the 400M radio station, and is used to capture the digital intercom wireless communication signal between the train and the base station 3, and the output end of the signal coupler is sequentially connected to the field strength monitoring module, the micro control unit 13 and the host computer 14.

[0034] Generally, the locomotive antenna can receive three useful signals with different strengths and channel frequencies at a fixed point. As the train moves, the strength of the three signals will change with the distance between the train and the base station, such as Figure 3As shown in the figure, as the train moves, it passes through different station base stations in turn, and the distance from different base stations also changes, resulting in changes in signal strength. The left half indicates passing the first station, and the right half indicates passing the second station. The host computer sets the base station frequencies F1, F2, and F3 to be scanned; the MCU controls the monitoring module to switch channels F1, F2, and F3 in turn and query the field strength, and monitors the communication field strength of multiple frequencies in real time while the train is moving.

[0035] Example 2

[0036] As another implementation of the present invention, this embodiment also provides a method for using the railway platform field strength monitoring device during train travel as described in the above embodiment, such as Figure 4 As shown, the specific steps are as follows:

[0037] Step S1, using a 400MHz digital intercom wireless signal field strength monitoring module, an MCU micro control unit 13 and a signal coupler 11 to form a monitoring system;

[0038] Step S2, setting the frequency points F1, F2, F3 to be scanned through the host computer 14;

[0039] Step S3, the MCU controls the field strength monitoring module 12 to switch channels F1, F2, and F3 in sequence and query the field strength;

[0040] Step S4: After the three channels are queried, the scanning results are output to the host computer 14, and the process goes into step S3 again for loop execution.

[0041] Example 3

[0042] As other implementation modes of the present invention, the implementation scope of the present invention is not limited to querying field strength only, and can also be applied to receiving CSBK (control signaling block), packet data, voice data, etc.

[0043] The implementation scope of the present invention is not limited to scanning three channels, and can be freely set in different application scenarios.

[0044] The implementation scope of the present invention is not limited to the 400M frequency band, and can also be applied to the 450M frequency band and the 800M frequency band.

[0045] The implementation scope of the present invention is not limited to using only one monitoring module, and multiple monitoring modules may also be used to monitor different frequency bands simultaneously.

[0046] The implementation scope of the present invention is not limited to monitoring the reception of signals by a monitoring device, but may also monitor the transmission of signals by a monitoring device, or monitor the transmission and reception of signals by a monitoring device at the same time.

[0047] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. A railway platform field strength monitoring device during train movement, characterized in that: The field strength monitoring device (1) is arranged inside the train CIR (2) and comprises: A signal coupler (11) is arranged between the CIR antenna (21) and the train radio (22) and is used to capture a digital intercom wireless communication signal between the train and the base station; The output end of the signal coupler (11) is sequentially connected to a field intensity monitoring module (12), a micro control unit (13) and a host computer (14); The field strength monitoring module (12) is used to scan multiple channels and query the field strength; The micro control unit (13) is used to control the scanning frequency of the field intensity monitoring module (12); The host computer (14) is used to receive the frequency setting that needs to be scanned.

2. A device for monitoring field strength of a railway platform during a moving train according to claim 1, characterized in that: The field intensity monitoring module detects frequency bands including: 400M frequency band, 450M frequency band or 800M frequency band.

3. The device for monitoring field strength of a railway platform during a moving train according to claim 2, characterized in that: One or more field intensity monitoring modules (12) are provided.

4. The device for monitoring field strength of a railway platform during a moving train according to claim 3, characterized in that: The plurality of field strength monitoring modules (12) are respectively digital intercom wireless signal field strength monitoring modules of different frequency bands.

5. The device for monitoring field strength of a railway platform during a moving train according to claim 1, characterized in that: The signal coupler (11) is used to monitor the received signal of the train CIR (2), or to monitor the sent signal of the train CIR (2).

6. The device for monitoring field strength of a railway platform during a moving train according to claim 1, characterized in that: Signal couplers (11) are provided in both the receiving and transmitting signal directions of the train CIR (2), and both signal couplers (11) are respectively connected to a field strength monitoring module (12) to simultaneously monitor the receiving and transmitting signals of the train CIR (2).

7. The device for monitoring field strength of a railway platform during a moving train according to claim 1, characterized in that: The monitoring data of the field intensity monitoring module also includes: control signaling block CSBK, packet data, and voice data.

8. A method for monitoring the field strength of a railway platform during a train movement, characterized in that: The method steps include: A device for monitoring field strength of a railway platform during a moving train as claimed in any one of claims 1 to 7, comprising a signal coupler (11), a field strength monitoring module (12) and a micro control unit (13); The frequency points to be scanned are set via the host computer (14); The micro control unit (13) controls the field strength monitoring module (12) to switch channels in sequence and query the field strength based on the frequency points that need to be scanned; When all channel field strength inquiries are completed, the scanning results are output to the host computer (14), and the channel field strength inquiries are returned to the loop to be executed.

9. A method for monitoring field strength of a railway platform during a moving train according to claim 8, characterized in that: The method is provided with a plurality of field strength monitoring modules (12), and the plurality of field strength monitoring modules (12) respectively monitor signals of different frequency bands simultaneously.

10. A method for monitoring field strength of a railway platform during a moving train according to claim 8, characterized in that: The method monitors the train receiving signal, or monitors the train transmitting signal, or monitors the train transmitting and receiving signals at the same time.

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