CN113879364A - Data access system of railway vehicle axle temperature detection equipment based on 4G - Google Patents
Data access system of railway vehicle axle temperature detection equipment based on 4G Download PDFInfo
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- CN113879364A CN113879364A CN202111307968.5A CN202111307968A CN113879364A CN 113879364 A CN113879364 A CN 113879364A CN 202111307968 A CN202111307968 A CN 202111307968A CN 113879364 A CN113879364 A CN 113879364A
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- 238000001514 detection method Methods 0.000 title claims abstract description 69
- 230000005540 biological transmission Effects 0.000 claims abstract description 42
- 238000012544 monitoring process Methods 0.000 claims abstract description 33
- 238000012795 verification Methods 0.000 claims description 22
- 238000000034 method Methods 0.000 abstract description 8
- 230000002457 bidirectional effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013524 data verification Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L15/00—Indicators provided on the vehicle or train for signalling purposes
- B61L15/0018—Communication with or on the vehicle or train
- B61L15/0027—Radio-based, e.g. using GSM-R
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
- B61K9/00—Railway vehicle profile gauges; Detecting or indicating overheating of components; Apparatus on locomotives or cars to indicate bad track sections; General design of track recording vehicles
- B61K9/04—Detectors for indicating the overheating of axle bearings and the like, e.g. associated with the brake system for applying the brakes in case of a fault
- B61K9/06—Detectors for indicating the overheating of axle bearings and the like, e.g. associated with the brake system for applying the brakes in case of a fault by detecting or indicating heat radiation from overheated axles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L15/00—Indicators provided on the vehicle or train for signalling purposes
- B61L15/0072—On-board train data handling
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a data access system of a railway vehicle axle temperature detection device based on 4G, relates to a data network transmission technology of infrared devices, and aims to solve the problems that the existing detection station uploads data in a wired connection mode, so that wiring in some areas is difficult and data transmission is influenced. According to the data transmission method and device, the data collected by the THDS detection station host are transmitted to the local area network server through the external network server, wherein the internal and external networks based on the HTTP protocol are deployed on the external network server to pass through the safety platform, the THDS monitoring unit and the data forwarding unit, the safety of the transmitted data can be guaranteed, when the data are transmitted to the local area network server, the data are further verified through the local area network server, the integrity of the data is verified, wrong information in the transmission process is prevented, the data are guaranteed to be complete and effective, and the correct and complete data can be transmitted to the THDS monitoring center machine. The system is used for transmitting the railway vehicle axle temperature data to the THDS monitoring center machine.
Description
Technical Field
The invention relates to a data network transmission technology of infrared equipment, in particular to a 4G-based railway train infrared equipment data access mode.
Background
At present, a railway vehicle axle temperature intelligent detection system (THDS) is widely applied to all roads, along with the increase of new lines and the encryption of existing lines, how to realize the rapid deployment of THDS equipment breaks through the bottleneck limitation of special geographic environments, realizes the access of THDS detection data, and is a technical problem to be solved urgently. In the current THDS data transmission scheme, the probe station uploads data in a wired connection (optical fiber) manner, which is high in bandwidth and stable in performance, but is difficult to implement in mountains, canyons, bridges and other areas without routing conditions or with difficult routing.
In addition, the existing transmission of the axle temperature data of the railway vehicle is carried out by using a special network, belongs to private network transmission, and has poor universality and inconvenient data transmission.
Disclosure of Invention
The invention aims to solve the problems that the existing detection station uploads data in a wired connection mode, so that wiring in some areas is difficult and data transmission is affected, and provides a data access system of a 4G-based railway vehicle axle temperature detection device.
The data access system of the 4G-based railway vehicle axle temperature detection equipment comprises a THDS detection station host, a wireless transmission unit, an external network server and a local area network server;
the external network server comprises a THDS monitoring unit, a data forwarding unit and an internal and external network crossing safety platform;
the THDS detection station host is used for receiving binary railway vehicle axle temperature data acquired by the infrared axle temperature detection equipment and transmitting the data to the wireless transmission unit;
the wireless transmission unit is connected with the THDS detection station through a serial port and used for receiving binary railway vehicle axle temperature data from the THDS detection station host through the serial port and sending the data to the cloud server;
the THDS monitoring unit is connected with the cloud server and used for establishing a link channel of an external network environment with the cloud server, analyzing the binary railway vehicle axle temperature data received from the cloud server into a data structure in a standard protocol format and storing the data structure in the standard protocol format in a specified directory in a file form;
the data forwarding unit is connected with the THDS monitoring unit and used for searching files in an appointed directory stored by the THDS monitoring unit at regular time and sending an HTTP data request containing the unsent railway vehicle axle temperature data files to the internal and external network crossing safety platform after the unsent railway vehicle axle temperature data files are found;
the internal and external network crossing safety platform is connected with the data forwarding unit and used for verifying the safety of the HTTP data request after receiving the HTTP data request containing the unsent railway vehicle axle temperature data file, and forwarding the HTTP data request containing the unsent railway vehicle axle temperature data file to the local area network server after the HTTP data request passes the verification;
and the local area network server is connected with the internal and external network crossing safety platform and used for receiving the HTTP request containing the unsent railway vehicle axle temperature data file, verifying the correctness and integrity of the data file and transmitting the verified correct and complete railway vehicle axle temperature data file to the THDS monitoring center machine.
Preferably, the local area network server is further configured to send an invoking command to the THDS detection station host through the intranet and extranet pass-through security platform, the data forwarding unit, the THDS monitoring unit and the wireless transmission unit in sequence;
the THDS detection station host is also used for transmitting calling information to the wireless transmission unit after receiving the calling command, wherein the calling information comprises binary railway vehicle axle temperature data and a binary train storage directory, which are acquired from the infrared axle temperature detection equipment;
the wireless transmission unit is also used for receiving calling information from the THDS detection station host through a serial port and sending the calling information to the cloud server;
the THDS monitoring unit is also used for storing the calling information received from the cloud server in a specified directory in a file form;
the data forwarding unit is also used for searching files in the specified directory stored by the THDS monitoring unit at regular time, and sending an HTTP data request containing the unsent calling information file to the internal and external network traversing security platform after finding the unsent calling information file;
the internal and external network passes through the security platform and is also used for verifying the security of the HTTP data request after receiving the HTTP data request containing the unsent calling information file, and forwarding the HTTP data request containing the unsent calling information file to the local area network server after the HTTP data request passes the verification;
the local area network server is also used for receiving the HTTP request containing the unsent calling information file, verifying the correctness and the integrity of the data file, and transmitting the correct and complete calling information file after verification to the THDS monitoring center machine.
Preferably, the local area network server is configured to verify correctness and integrity of the data file, and specifically includes:
and the local area network server is used for comparing the data format of the received railway vehicle axle temperature data file with a built-in standard protocol format and verifying the correctness of the railway vehicle axle temperature data, transmitting the railway vehicle axle temperature data to the THDS monitoring center machine if the comparison result is consistent and the verification result is correct, and not transmitting the railway vehicle axle temperature data to the THDS monitoring center machine if the comparison result and the verification result are incorrect.
Preferably, the local area network server is implemented by a data receiving service unit.
Preferably, the wireless transmission unit is implemented by a 4G transmission unit.
The invention has the beneficial effects that:
this application belongs to with public network transmission data, and the commonality is good, and transmission data is convenient.
The method and the device are realized by additionally installing the 4G transmission unit (DTU) in the detection station, have high adaptability to the geographic environment, can solve the problem that the wired deployment cannot be adopted, and save the cost.
In addition, the data acquired by the THDS detection station host are transmitted to the local area network server by the external network server, wherein the external network server is provided with an internal and external network crossing safety platform based on an HTTP protocol, a THDS monitoring unit and a data forwarding unit, so that the safety of the transmitted data can be ensured, when the data are transmitted to the local area network server, the data are further verified by the local area network server, the integrity of the data is verified, wrong information in the transmission process is prevented, the data are ensured to be complete and effective, and the correct and complete data can be transmitted to the THDS monitoring center machine; the data received by the THDS monitoring center machine is correct, complete and valid data.
Therefore, the THDS equipment deployment method is simple in deployment, flexible in functional design, high in safety, completely compatible with the existing THDS system, and capable of solving the problem that the THDS equipment is difficult to deploy in a wired mode.
Drawings
FIG. 1 is a schematic structural diagram of a data access system of a 4G-based axle temperature detection device of a railway vehicle;
fig. 2 is a schematic diagram of a data access system of a 4G-based railway vehicle axle temperature detection device.
Detailed Description
The first embodiment is as follows: the data access system of the 4G-based railway vehicle axle temperature detection device according to the present embodiment is described with reference to fig. 1 and fig. 2, and the system includes a THDS detection station host 1, a wireless transmission unit 2, an extranet server and a local area network server 6;
the external network server comprises a THDS monitoring unit 3, a data forwarding unit 4 and an internal and external network crossing safety platform 5;
the THDS detection station host 1 is used for receiving binary railway vehicle axle temperature data acquired by the infrared axle temperature detection equipment and transmitting the data to the wireless transmission unit 2;
the wireless transmission unit 2 is connected with the THDS detection station 1 through a serial port and used for receiving binary railway vehicle axle temperature data from the THDS detection station host through the serial port and sending the data to the cloud server;
the THDS monitoring unit 3 is connected with the cloud server and used for establishing a link channel of an external network environment with the cloud server, analyzing the binary railway vehicle axle temperature data received from the cloud server into a data structure in a standard protocol format and storing the data structure in the standard protocol format in a specified directory in a file form;
the data forwarding unit 4 is connected with the THDS monitoring unit 3 and used for regularly searching files in an appointed directory stored by the THDS monitoring unit 3 and sending an HTTP data request containing the unsent railway vehicle axle temperature data files to the internal and external network crossing safety platform 5 after the unsent railway vehicle axle temperature data files are found;
the internal and external network crossing safety platform 5 is connected with the data forwarding unit 4 and used for verifying the safety of the HTTP data request after receiving the HTTP data request containing the unsent railway vehicle axle temperature data file, and forwarding the HTTP data request containing the unsent railway vehicle axle temperature data file to the local area network server 6 after the HTTP data request passes the verification;
and the local area network server 6 is connected with the internal and external network crossing safety platform 5 and used for receiving the HTTP request containing the unsent railway vehicle axle temperature data file, verifying the correctness and integrity of the data file and transmitting the verified railway vehicle axle temperature data file which is correct and complete to the THDS monitoring center machine.
In this embodiment, as shown in fig. 1, the THDS detection station transmits the detection data to a cloud server on the internet through a 4G transmission unit, and then the detection data is sent to an external network server by the cloud server, the THDS monitoring unit receives and verifies the validity of the data, the data forwarding unit sends an HTTP data request to the internal and external networks through a security platform, the security platform receives the request and performs bidirectional verification, the request is forwarded to a local area network server after the verification is passed, and the data reception service program completes the data reception, so that the transmission flow of the data in the external network and the local area network is completed. Wherein, the bidirectional authentication refers to mutual authentication between the client and the server. The intranet and extranet pass-through security platform comprises an existing security authentication platform and a request receiving program which is secondarily developed according to the platform. When the method is implemented, an electronic certificate is applied to a security authentication platform administrator, an external network request receiving program is developed according to corresponding standards and requirements, the program receives an HTTP request sent by a data forwarding unit and sends an encryption request to the security authentication platform, and the security authentication platform verify identity validity through mutual certificate and signature check. The method is different from a one-way verification method that a client only verifies whether a server is safe and effective, the two-way verification increases the validity verification of the server to the client, the verification is two-way, so the method is called two-way verification, wherein the server refers to a safety authentication platform, and the client refers to a request receiving program for secondary development.
As shown in fig. 2, the 4G transmission unit (DTU) is connected to the THDS detection station host through a serial port, and communicates through a serial port command, and the DTU is responsible for sending THDS detection data received by the serial port to the cloud server. The THDS monitoring unit is installed on the external network server, and the unit and the cloud server establish a link channel based on an external network environment to receive THDS detection station data. And after the THDS monitoring center software receives new data, the data forwarding unit establishes a request connection of a mapping address of the safety platform in an HTTP data request mode, calls a data receiving service program on the local area network server and sends THDS detection station data. And the data receiving service unit on the local area network server is used for receiving the THDS detection station data sent by the security platform and finishing the final verification of the data. And after the data verification is successful, the data can be used by any registered THDS monitoring center machine in the local area network.
The second embodiment is as follows: in this embodiment, the first embodiment is further defined, and in this embodiment,
the local area network server 6 is further used for sending a calling command to the THDS detection station host 1 sequentially through the internal and external network crossing safety platform 5, the data forwarding unit 4, the THDS monitoring unit 3 and the wireless transmission unit 2;
the THDS detection station host 1 is also used for transmitting the calling information to the wireless transmission unit 2 after receiving the calling command, wherein the calling information comprises binary railway vehicle axle temperature data and a binary train storage directory which are acquired from the infrared axle temperature detection equipment;
the wireless transmission unit 2 is also used for receiving calling information from the THDS detection station host through a serial port and sending the calling information to the cloud server;
the THDS monitoring unit 3 is also used for storing the calling information received from the cloud server in a specified directory in a file form;
the data forwarding unit 4 is further configured to periodically search for files in the specified directory stored by the THDS monitoring unit 3, and after finding the unsent retrieval information file, send an HTTP data request including the unsent retrieval information file to the intranet and extranet traversal security platform 5;
the intranet and extranet pass-through security platform 5 is further used for verifying the security of the HTTP data request after receiving the HTTP data request containing the unsent calling information file, and forwarding the HTTP data request containing the unsent calling information file to the LAN server 6 after the HTTP data request passes the verification;
the local area network server 6 is further configured to receive an HTTP request including the unsent retrieval information file, verify the correctness and integrity of the data file, and transmit the retrieved information file which is verified to be correct and complete to the THDS monitoring center machine.
In this embodiment, the binary train storage directory is used to determine the operating status of the THDS detection station, and the binary train storage directory includes the detection status and the uploading status of the train; the detection condition of the train comprises the passing time of the detection train, and the uploading condition refers to whether binary railway vehicle axle temperature data of the detection train is uploaded or not.
In the method, a data forwarding unit 4 searches for a file in an appointed directory stored by a THDS monitoring unit 3, if a non-transmitted calling information file is found, for example, a non-transmitted railway vehicle axle temperature data file is found, the file is transmitted, and if a non-transmitted train storage directory file is found, the file is transmitted; in any case, the unsent file is sent out.
In the first specific embodiment, the THDS monitoring unit 3 needs to analyze binary railway vehicle axle temperature data into a data structure in a standard protocol format, the reason that the railway vehicle axle temperature data needs to be converted into the format is that the THDS monitoring unit needs to display the data information, and in the second specific embodiment, the THDS monitoring unit directly stores the received calling information in a specified directory in a file form, and the calling information does not need to be displayed and only needs to be transmitted downwards.
In the application, the THDS probe station host 1 can transmit data in two ways:
1. after the THDS detection station passes through the train, detection data are sent to the DTU through the serial port, the DTU sends the detection data to the cloud server, the cloud server is communicated with the THDS monitoring unit in the external network server, and the THDS monitoring unit receives the detection data and stores the detection data to the local. And a data forwarding unit in the extranet server checks the local storage directory in real time, and when a new file exists, a data receiving service unit (uploading service) in the local area network service is called to send the data to the local area network server.
2. When the local area network server sends an invoking command to the THDS detection station, a data forwarding unit in the external network server regularly invokes a data receiving service unit (downloading service) in the local area network server to obtain the invoking command, then the invoking command is stored in a sending directory of a local THDS monitoring unit, the THDS monitoring unit sends the invoking command to a DTU (data transfer unit), the DTU sends the invoking command to the THDS detection station through a serial port, and a host of the THDS detection station sends related invoking information to a wireless transmission unit to complete sending of data from the local area network server to the external network detection station after receiving the invoking command.
The third concrete implementation mode: in this embodiment, the local area network server is configured to verify correctness and integrity of the data file, and specifically includes:
and the local area network server 6 is used for comparing the data format of the received railway vehicle axle temperature data file with a built-in standard protocol format and verifying the correctness of the railway vehicle axle temperature data, transmitting the railway vehicle axle temperature data to the THDS monitoring center machine if the comparison result is consistent and the verification result is correct, and not transmitting the railway vehicle axle temperature data to the THDS monitoring center machine if the comparison result and the verification result are incorrect.
The fourth concrete implementation mode: the present embodiment is further limited to the first embodiment, and in the present embodiment, the local area network server 6 is implemented by using a data reception service unit.
The fifth concrete implementation mode: in this embodiment, the wireless transmission unit 2 is implemented by using a 4G transmission unit.
Claims (5)
1. The data access system of the railway vehicle axle temperature detection equipment based on 4G is characterized by comprising a THDS detection station host (1), a wireless transmission unit (2), an external network server and a local area network server (6);
the external network server comprises a THDS monitoring unit (3), a data forwarding unit (4) and an internal and external network crossing safety platform (5);
the THDS detection station host (1) is used for receiving binary railway vehicle axle temperature data collected by the infrared axle temperature detection equipment and transmitting the data to the wireless transmission unit (2);
the wireless transmission unit (2) is connected with the THDS detection station (1) through a serial port and used for receiving binary railway vehicle axle temperature data from the THDS detection station host through the serial port and sending the data to the cloud server;
the THDS monitoring unit (3) is connected with the cloud server and used for establishing a link channel of an external network environment with the cloud server, analyzing the binary railway vehicle axle temperature data received from the cloud server into a data structure in a standard protocol format and storing the data structure in the standard protocol format in a specified directory in a file form;
the data forwarding unit (4) is connected with the THDS monitoring unit (3) and is used for searching files in an appointed directory stored by the THDS monitoring unit (3) at regular time and sending an HTTP data request containing the unsent railway vehicle axle temperature data files to the internal and external network crossing safety platform (5) after the unsent railway vehicle axle temperature data files are found;
the internal and external network crossing safety platform (5) is connected with the data forwarding unit (4) and is used for verifying the safety of the HTTP data request after receiving the HTTP data request containing the unsent railway vehicle axle temperature data file, and forwarding the HTTP data request containing the unsent railway vehicle axle temperature data file to the local area network server (6) after the HTTP data request passes the verification;
and the local area network server (6) is connected with the internal and external network crossing safety platform (5) and is used for receiving the HTTP request containing the unsent railway vehicle axle temperature data file, verifying the correctness and integrity of the data file and transmitting the verified railway vehicle axle temperature data file which is correct and complete to the THDS monitoring center machine.
2. The data access system of the 4G-based railway vehicle axle temperature detection equipment according to claim 1, wherein the local area network server (6) is further configured to send a retrieval command to the THDS detection station host (1) sequentially through the intranet and extranet traversal security platform (5), the data forwarding unit (4), the THDS monitoring unit (3) and the wireless transmission unit (2);
the THDS detection station host (1) is also used for transmitting calling information to the wireless transmission unit (2) after receiving a calling command, wherein the calling information comprises binary railway vehicle axle temperature data and a binary train storage directory, which are acquired from the infrared axle temperature detection equipment;
the wireless transmission unit (2) is also used for receiving calling information from the THDS detection station host through a serial port and sending the calling information to the cloud server;
the THDS monitoring unit (3) is also used for storing the calling information received from the cloud server in a specified directory in a file form;
the data forwarding unit (4) is further used for searching files in the specified directory stored by the THDS monitoring unit (3) at regular time, and sending an HTTP data request containing the unsent calling information files to the intranet and extranet traversal security platform (5) after the unsent calling information files are found;
the internal and external network passes through the security platform (5), and is also used for verifying the security of the HTTP data request after receiving the HTTP data request containing the unsent calling information file, and forwarding the HTTP data request containing the unsent calling information file to the local area network server (6) after the HTTP data request passes the verification;
and the local area network server (6) is also used for receiving the HTTP request containing the unsent calling information file, verifying the correctness and the integrity of the data file, and transmitting the correct and complete calling information file after verification to the THDS monitoring center machine.
3. The data access system of 4G-based railway vehicle axle temperature detection equipment according to claim 1, wherein the local area network server is used for verifying the correctness and integrity of the data file, and specifically comprises:
and the local area network server (6) is used for comparing the data format of the received railway vehicle axle temperature data file with a built-in standard protocol format and verifying the correctness of the railway vehicle axle temperature data, transmitting the railway vehicle axle temperature data to the THDS monitoring center machine if the comparison result is consistent and the verification result is correct, and not transmitting the railway vehicle axle temperature data to the THDS monitoring center machine if the comparison result and the verification result are incorrect.
4. The data access system of 4G-based railway vehicle axle temperature detection equipment according to claim 1, wherein the local area network server (6) is implemented by a data receiving service unit.
5. The data access system of 4G-based railway vehicle axle temperature detection equipment according to claim 1, wherein the wireless transmission unit (2) is realized by adopting a 4G transmission unit.
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