CN111093171B - BTM data isolation acquisition equipment and acquisition method thereof - Google Patents
BTM data isolation acquisition equipment and acquisition method thereof Download PDFInfo
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- CN111093171B CN111093171B CN202010205275.4A CN202010205275A CN111093171B CN 111093171 B CN111093171 B CN 111093171B CN 202010205275 A CN202010205275 A CN 202010205275A CN 111093171 B CN111093171 B CN 111093171B
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- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
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Abstract
The invention relates to a BTM data isolation acquisition device and an acquisition method thereof, wherein the acquisition device comprises an isolation system and an acquisition system, the isolation system comprises an isolation power module, a protection module and an isolation module, the acquisition system comprises a CP L D module and a WIFI module, the isolation power module is used for isolating power supply provided by the acquired device from the acquisition device, the protection module is used for protecting the acquisition device from overvoltage and overcurrent conditions caused by the fault of the isolation module, the isolation module is used for isolating transmission signals of the acquisition device from transmission signals of the acquired device, the CP L D is used for carrying out format conversion and data combination on the transmission signals and sending the transmission signals after the format conversion and the data combination to the WIFI module.
Description
Technical Field
The invention belongs to the field of track information, and particularly relates to BTM data isolation acquisition equipment and an acquisition method thereof.
Background
The btm (balise transmission module) is a key device of an ATP (automatic train protection) on board of the motor train unit, and is used for receiving ground transponder information, implementing transmission of vehicle and ground data, and calibrating the train position by the ATP on board system. Btra (balise TelegramReader and analyzer) is a tool used to collect and analyze the quality of the signal transmitted by a BTM receiving transponder. The data such as the message quality, the working state and the like of the BTM are output by connecting the BTM test port; the real-time collection analysis equipment analyzes the BTRA signals through collecting BTM interfaces to obtain the fault reason of the train, the interfaces are originally reserved as test interfaces, and the inside is not subjected to isolation protection processing.
Due to the complex electromagnetic environment of the motor train unit, obvious transient disturbance exists when a VCB (vacuum circuit breaker) is opened and closed, a pantograph is lifted and lowered, and a neutral section is split, disturbance is easily caused to BTM (branch bus) equipment or cables, messages are received by mistake, and the operation of a train is further influenced; the internal equipment space of the train signal cabinet is compact, the number is large, the electromagnetic environment is complex, and low-frequency sensitive signals are easily interfered to influence transmission; the fault of train BTM equipment can lead to the trouble of train ATP (automatic protection system), leads to the vehicle to stop operation, if unable quick location problem place will influence other trains normal operating on the circuit, causes the train night. In summary, real-time acquisition of analysis equipment and reliable acquisition safeguards are essential.
The real-time collection and analysis equipment analyzes the interface signals of the BTM equipment in the collection cabinet, monitors the state of the BTM equipment, and can quickly locate the problem after the train fault to provide a solution. Because the internal space is compact, most of the acquisition equipment is far away from the acquired equipment, even the acquisition equipment spans a cabinet to acquire signals, and a BTRA interface in the BTM equipment is not isolated and protected;
at present, BTM signal acquisition equipment does not exist, most of acquisition equipment used in other scenes adopts a wired connection acquisition mode, and the problems of data acquisition error caused by improper isolation, cable acquisition interference, inconvenience in installation due to overlong cables and the like exist.
Therefore, how to design an acquisition device and an acquisition method that have both isolation protection and data acquisition becomes an urgent technical problem to be solved.
Disclosure of Invention
In view of the above, the present invention relates to a BTM data isolation acquisition device,
the acquisition equipment comprises an isolation system and an acquisition system;
the isolation system comprises an isolation power supply module, a protection module and an isolation module;
the acquisition system comprises a CP L D module and a WIFI module;
the isolation power supply module is used for isolating the power supply electric energy provided by the acquisition equipment from the acquisition equipment;
the protection module is used for protecting the overvoltage and overcurrent conditions of the acquisition equipment caused by the fault of the isolation module;
the isolation module is used for isolating transmission signals between the acquisition equipment and the acquired equipment;
the CP L D is configured to perform format conversion and data combination on the transmission signal, and send the transmission signal after format conversion and data combination to the WIFI module;
and the WIFI module is used for sending the transmission signal after the CP L D format conversion and the data combination through a WIFI antenna.
Preferably, the input end of the isolation power supply module is connected with a connector, and a fuse is also connected in series between the connector and the isolation power supply module;
the output end of the isolation power supply module is respectively connected with the isolation module, the CP L D and the WIFI module.
Preferably, the input end of the protection module is connected with the connector, and the output end of the protection module is connected with the isolation module;
the protection module includes melts the fuse slowly, just melt the fuse slowly and be connected with TVS's one end, TVS's other end ground connection.
Preferably, the isolation module comprises a signal isolation unit;
and the signal isolation unit is used for isolating transmission signals between the acquisition equipment and the acquired equipment.
Preferably, the CP L D includes a conversion unit and a merging unit;
the merging unit is used for merging the received transmission signals in a mode of increasing frame headers and address bits;
and the conversion unit is used for converting the combined transmission signals into a data format corresponding to the input interface of the WIFI module.
Preferably, the CP L D input end is connected to the isolation module, and the output end is connected to the WIFI module;
the CP L D is also used for judging whether the connection with the WIFI module is normal or not before transmitting the transmission signal after format conversion and data combination;
if the connection is normal, the CP L D sends the transmission signal after the format conversion and the data combination to the WIFI module in real time, and the WIFI module forwards the transmission signal through a WIFI antenna;
if the connection is abnormal, the WIFI module does not process the transmission signal after the format conversion and the data combination sent by the CP L D.
The invention also relates to a collection method of the BTM data isolation collection equipment,
isolating power supply electric energy provided by the acquired equipment to the acquisition equipment and transmission signals between the acquired equipment and the acquisition equipment through an isolation system;
the acquisition system performs format conversion and data combination on the transmission signals output by the acquired equipment;
and the acquisition system transmits the transmission signal after format conversion and data combination to the ground equipment through the WIFI antenna.
Preferably, the format conversion and data merging includes:
the acquisition equipment combines the transmission signals output by the acquired equipment in a mode of increasing frame headers and address bits;
and the collection equipment converts the combined transmission signals into a data format corresponding to the WIFI module input interface.
Preferably, the transmitting the transmission signal after the format conversion and the data combination by the acquisition system through the WIFI antenna to the ground device includes:
judging whether the connection between the CP L D and the WIFI module is normal or not;
if the connection is normal, the CP L D sends the transmission signal after format conversion and data combination to the WIFI module in real time, and the WIFI module forwards the transmission signal to ground equipment through a WIFI antenna;
if the connection is abnormal, the WIFI module does not process the transmission signal after the format conversion and the data combination sent by the CP L D.
The invention has the technical effects that: each part of the collecting device is integrated in a metal forming frame, and the collecting device is fixedly connected with the collected device through a connector, so that each module part is small in size and high in integration level. Compared with the traditional data acquisition equipment, each module in the acquisition equipment is easy to install, so that the condition of excessive cables inside the frame is reduced. Furthermore, the signal isolation unit in the isolation module is powered by the isolation power supply module, and the signal isolation unit isolates the transmission signal of the acquisition equipment from the transmission signal of the acquired equipment, so that the dual isolation can effectively avoid the failure of the acquisition equipment, and further avoid the occurrence of the condition of the failure of the acquired equipment.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 shows a block diagram of a complete device architecture of an embodiment of the present invention;
fig. 2 shows a block diagram of a guard module according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention relates to BTM data isolation acquisition equipment, which comprises an isolation system and an acquisition system, wherein the isolation system comprises an isolation power module, a protection module and an isolation module, the acquisition system comprises a CP L D (complex programmable logic device) and a WIFI module, and the acquisition equipment mainly transmits data output by a BTRA interface at a BTM end to storage and recording equipment through a WIFI antenna after the data sequentially passes through the protection module, the isolation module, the CP L D and the WIFI transmission module.
Keep apart power module mainly keeps apart the supply energy that BTM (by collection equipment) provided with collection equipment, is supplied power for collection equipment through the connector by collection equipment, and isolation system's isolation power module is as the preliminary receiving device of power supply to keep apart power module and be the transit point, will supply energy transmits respectively and gives isolation module, CP L D and WIFI module, thereby provides working power supply for collection equipment internal work.
The acquisition equipment is protected by connecting the fuse in series between the isolation power supply module and the connector, so that the damage of the acquisition equipment caused by short circuit or overlarge current is avoided. The isolation power supply module is used as a transfer point, so that the acquisition equipment and the acquired equipment are effectively isolated, and the failure of the acquired equipment caused by the failure of the acquisition equipment is avoided.
For example, the isolation power module serves as a transfer point to supply power to the whole acquisition device, the acquisition device may adopt an integrated frame structure, and both the acquisition system and the isolation system are integrated in the frame structure, for example, a black cube with a length, a width and a height of about 2cm may be used. The whole frame structure is welded on the circuit board, and the input and output power supply energy and the transmission signal are separated in a magnetic coupling mode, so that the fault of the acquired equipment caused by the internal fault of the acquired equipment can be avoided.
As shown in figure 2, the protection module is connected in series on a circuit between the isolation module and the connector, namely the mode of connecting the fuse in series slowly, so that the CP L D and the WIFI module are ensured not to break down or the circuit is ensured to burn when large current passes through.
In addition, the slow fuse is connected to one end of a TVS (transient Voltage super), and the other end of the TVS is grounded. When the protection module is subjected to reverse impact of large current or large voltage of the isolation module, the TVS changes the high impedance into low impedance, and the reverse large current and the large voltage are led into the ground, so that faults caused by overvoltage are prevented.
When the protection module is connected with the connector, the protection module can be connected by adopting a D-sub (a kind of analog signal or digital signal interface) connector, so that the connection effect of the protection module and the connector can be ensured. The D-sub is only illustrated as one connection method, and is not limited to this connection interface, for example, vga (video graphics array), parallel port, com (serial communication port) serial port, and the like. The protection module is connected with the connector through the D-sub, so that the effect of repeatedly plugging and unplugging the protection module and the connector is ensured, and faults caused by repeated plugging and unplugging can be avoided.
The signal of the collected equipment is transmitted to the isolation module through the protection module, and the isolation module comprises a signal isolation unit. The signal isolation unit is powered by the isolation power module, the isolation power module provides short circuit or overcurrent protection for the signal isolation unit, and when the output end of the isolation power module is in short circuit with the signal isolation unit or the current of the output end of the isolation power module exceeds a certain threshold value, the isolation power module can automatically disconnect the input end of the isolation power module, so that the short circuit of the acquisition equipment caused by circuit faults is avoided. The signal isolation unit isolates the acquisition equipment from transmission signals at two ends of the acquired equipment, so that the influence on the acquired equipment caused by voltage abnormity in the acquisition equipment is prevented, namely, the fault of the acquisition equipment cannot cause the fault of the acquired equipment.
In fig. 1, a transmission signal is transmitted to the interior of a CP L D through a signal isolation unit, the CP L D mainly performs format conversion and data combination on data, and the CP L D includes a conversion unit and a combination unit, wherein the transmission signal includes multiple paths of data.
The merging unit mainly merges the acquired multi-channel data by increasing a frame header and an address bit. The merging unit packs the received multiple paths of data and adds a frame header before the data are packed, thereby realizing the distinguishing of the packets and the packet data. Illustratively, the multiple paths of data are packaged as if a plurality of new folders are created, then a plurality of files are respectively placed in the new folders, and then a header is added to each new folder, for example, "1 new folder", "2 new folder", "3 new folder", etc., so as to distinguish the named new folders. After a frame header is added to an acquired transmission signal, different address bits are added for distinguishing, for example, after a frame header "1" is added in front of a new folder, address bits can be added after the frame header "1" for distinguishing, for example, the address bits are added again to a plurality of "1 new folders" to become "1 (1) new folder", "1 (2) new folder", and the like, so as to distinguish packet data with the added address bits. That is, "1" is the header, "new folder" is the multi-way data, "1", "2" are the address bits.
And combining the multiple paths of data, wherein the data volume of each path of data needs to be detected, so that each path of packet data is arranged according to the data volume, and then the arranged packet data is sent to the WIFI module. Illustratively, the First path of data volume is larger than the second path of data volume, the First path of data volume is combined into a plurality of packet data, the second path of data volume is combined into one packet data, and then the plurality of First path of packet data and the second path of packet data are sent to the WIFI module, so as to prevent the overflow of an internal fifo (First input First output) (memory).
The conversion unit converts the multi-channel packet data into a data format corresponding to the input interface of the WIFI module, and the WIFI module transmits the packet data after format conversion to the storage and recording equipment through the WIFI antenna. The storage recording equipment is connected to a railway private network or a 4G network, so that the received data are stored and are forwarded to ground equipment in real time through the network, and the data are analyzed and processed in time. For example, the railway private network or the 4G network to which the storage and recording device is connected is only used as an example for illustration, and is not limited to network transmission modes such as the railway private network or the 4G network, for example, a 5G network, and the like.
After the multi-channel data are subjected to data merging and format conversion by the CP L D, the CP L D sends the multi-channel data subjected to data merging and format conversion to the WIFI module, the CP L D does not store the multi-channel data and only serves as a multi-channel data processing device, then the CP L D is connected with the WIFI module, and the use condition of the WIFI module is determined according to the connection condition of the CP L D and the WIFI module:
if the connection between the WIFI module and the CP L D is normal, the CP L D sends the multi-channel data after data merging and format conversion to the WIFI module, and therefore the WIFI module transmits the received multi-channel data to the storage recording device through a WIFI antenna;
if the connection between the WIFI module and the CP L D is abnormal, the WIFI module does not process the data forwarded by the CP L D.
The acquisition equipment is integrated in a metal-formed frame, and is fixedly connected with the acquired equipment through a connector, and each module part has small volume and high integration level.
The invention also relates to an acquisition method of the BTM data isolation acquisition equipment, which comprises the following steps of firstly, isolating the power supply electric energy provided by the acquired equipment to the acquisition equipment and the transmission signal between the acquired equipment and the acquisition equipment through an isolation system; then, the acquisition system performs data combination and format conversion on the transmission signals output by the acquired equipment; and finally, the acquisition system transmits the transmission signal after format conversion and data combination to the ground equipment through the WIFI antenna.
The isolation power supply module in the isolation system is used for isolating the power supply electric energy provided by the acquisition equipment from the acquisition equipment, so that the acquisition equipment cannot be affected when the acquisition equipment fails.
The signal isolation unit in the isolation module is powered by the isolation power supply module, and the signal isolation unit isolates the transmission signal of the acquisition equipment from the transmission signal of the acquired equipment, namely, the failure of the acquisition equipment cannot cause the failure of the acquired equipment.
The protection module is mainly used for protecting under the conditions of overvoltage and overcurrent caused by faults of the isolation part and during plugging and unplugging of the connector.
In the embodiment, the data merging and format conversion comprises the steps that firstly, the collecting device merges transmission signals output by the collecting device in a mode of adding a frame header and an address bit, then, the collecting device converts the merged transmission signals into a data format corresponding to an input interface of the WIFI module, the CP L D collects multi-path data of the collecting device, then, the multi-path data are merged, the multi-path data are conveniently sent, and the transmission effect of the multi-path data is improved through wireless transmission between equipment cabinets.
The acquisition system sends the transmission signal after format conversion and data combination to the ground equipment through the WIFI antenna, and the acquisition system comprises:
judging whether the connection between the CP L D and the WIFI module is normal or not;
and if the connection is normal, the CP L D sends the transmission signal after format conversion and data combination to the WIFI module in real time, the WIFI module forwards the transmission signal to ground equipment through a WIFI antenna, and if the connection is abnormal, the WIFI module does not process the transmission signal after format conversion and data combination sent by the CP L D.
The invention isolates the power supply electric energy provided by the acquired equipment from the acquisition equipment through the isolation system, merges and converts the multi-channel data provided by the acquired equipment through the acquisition system, and then sends the converted multi-channel data to the ground equipment in a wireless transmission mode, thereby realizing the automatic downloading of the BTM data and more comprehensively acquiring the data. Through the data of collection equipment collection, increased work efficiency, carry out real-time supervision to train running state, through comprehensive data analysis, it is more accurate, more quick to system fault diagnosis location.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. A BTM data isolation acquisition device is characterized in that,
the acquisition equipment comprises an isolation system and an acquisition system, the acquisition equipment is fixedly connected with the acquired equipment through a connector, and the acquired equipment supplies power to the acquisition equipment through the connector;
the isolation system comprises an isolation power supply module, a protection module and an isolation module;
the acquisition system comprises a CP L D module and a WIFI module;
the isolation power supply module is used for isolating the power supply energy provided by the acquisition equipment from the acquisition equipment, serving as a primary receiving device for power supply, serving as a transfer point for respectively transmitting the power supply energy to the isolation module, the CP L D and the WIFI module, and providing a working power supply for the interior of the acquisition equipment;
the protection module is used for protecting the overvoltage and overcurrent conditions of the acquisition equipment caused by the fault of the isolation module;
the isolation module is used for isolating transmission signals between the acquisition equipment and the acquired equipment and preventing the acquired equipment from being influenced by voltage abnormity in the acquisition equipment;
the isolation module comprises a signal isolation unit;
the signal isolation unit is used for isolating transmission signals between the acquisition equipment and the acquired equipment;
the CP L D is configured to perform format conversion and data combination on the transmission signal, and send the transmission signal after format conversion and data combination to the WIFI module;
the CP L D includes a merging unit,
the merging unit is used for merging the received transmission signals in a mode of increasing frame headers and address bits;
and the WIFI module is used for sending the transmission signal after the CP L D format conversion and the data combination through a WIFI antenna.
2. The BTM data isolation collection device of claim 1,
the input end of the isolation power supply module is connected with a connector, and a fuse is also connected in series between the connector and the isolation power supply module;
the output end of the isolation power supply module is respectively connected with the isolation module, the CP L D and the WIFI module.
3. The BTM data isolation collection device of claim 1,
the input end of the protection module is connected with the connector, and the output end of the protection module is connected with the isolation module;
the protection module includes melts the fuse slowly, just melt the fuse slowly and be connected with TVS's one end, TVS's other end ground connection.
4. The BTM data isolation collection device of claim 1,
the CP L D further includes a conversion unit;
and the conversion unit is used for converting the combined transmission signals into a data format corresponding to the input interface of the WIFI module.
5. The BTM data isolation collection device of claim 4,
the CP L D input end is connected with the isolation module, and the output end is connected with the WIFI module;
the CP L D is also used for judging whether the connection with the WIFI module is normal or not before transmitting the transmission signal after format conversion and data combination;
if the connection is normal, the CP L D sends the transmission signal after the format conversion and the data combination to the WIFI module in real time, and the WIFI module forwards the transmission signal through a WIFI antenna;
if the connection is abnormal, the WIFI module does not process the transmission signal after the format conversion and the data combination sent by the CP L D.
6. The method of claim 1, wherein the BTM data isolation acquisition device further comprises a data acquisition unit,
isolating power supply electric energy provided by the acquired equipment to the acquisition equipment and transmission signals between the acquired equipment and the acquisition equipment through an isolation system;
the acquisition system performs format conversion and data combination on the transmission signals output by the acquired equipment; the data combination comprises that the acquisition equipment combines transmission signals output by the acquisition equipment in a mode of adding frame headers and address bits;
and the acquisition system transmits the transmission signal after format conversion and data combination to the ground equipment through the WIFI antenna.
7. The acquisition method of a BTM data isolation acquisition device according to claim 6,
the format conversion comprises the following steps:
and the collection equipment converts the combined transmission signals into a data format corresponding to the WIFI module input interface.
8. The acquisition method of a BTM data isolation acquisition device according to claim 6,
the acquisition system sends the transmission signal after format conversion and data combination to the ground equipment through the WIFI antenna, and the acquisition system comprises:
judging whether the connection between the CP L D and the WIFI module is normal or not;
if the connection is normal, the CP L D sends the transmission signal after format conversion and data combination to the WIFI module in real time, and the WIFI module forwards the transmission signal to ground equipment through a WIFI antenna;
if the connection is abnormal, the WIFI module does not process the transmission signal after the format conversion and the data combination sent by the CP L D.
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