CN114401021B - Integrated BTM antenna device and communication method thereof - Google Patents
Integrated BTM antenna device and communication method thereof Download PDFInfo
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- CN114401021B CN114401021B CN202210299061.7A CN202210299061A CN114401021B CN 114401021 B CN114401021 B CN 114401021B CN 202210299061 A CN202210299061 A CN 202210299061A CN 114401021 B CN114401021 B CN 114401021B
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- 238000004891 communication Methods 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims abstract description 10
- 230000005540 biological transmission Effects 0.000 claims description 5
- 238000012423 maintenance Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 230000003993 interaction Effects 0.000 claims description 2
- 238000003780 insertion Methods 0.000 claims 1
- 230000037431 insertion Effects 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 6
- 230000005611 electricity Effects 0.000 abstract description 2
- 230000010354 integration Effects 0.000 description 3
- 238000013459 approach Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
- H04B1/12—Neutralising, balancing, or compensation arrangements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/32—Adaptation for use in or on road or rail vehicles
- H01Q1/3208—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/3822—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving specially adapted for use in vehicles
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/59—Responders; Transponders
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40208—Bus networks characterized by the use of a particular bus standard
- H04L2012/40215—Controller Area Network CAN
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40267—Bus for use in transportation systems
- H04L2012/40273—Bus for use in transportation systems the transportation system being a vehicle
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention belongs to the technical field of train operation control, and particularly relates to an integrated BTM antenna device and a communication method thereof; the device is provided with a first cavity and a second cavity which are integrally arranged in the same shell, and the first cavity and the second cavity are respectively used for installing a BTM host and a BTM antenna; the BTM antenna arranged in the second cavity comprises an antenna plate and a WiFi module; the BTM host arranged in the first cavity is of a double-layer structure and comprises a communication board, a recording board, a decoding board, a power board, a sending board and a receiving board, wherein the communication board, the recording board and the decoding board are arranged on a first layer, and the power board, the sending board and the receiving board are arranged on a second layer; the BTM host and the BTM antenna are integrated in the same shell, so that the installation space in the vehicle-mounted cabinet CAN be saved, and the integrated BTM antenna device is communicated with a vehicle-mounted signal system through a CAN communication cable, so that the problem of interference of train electricity on the BTM radio frequency antenna is thoroughly solved.
Description
Technical Field
The invention belongs to the technical field of train operation control, and particularly relates to an integrated BTM antenna device and a communication method thereof.
Background
The BTM (transponder Transmission Module) device is an important component of the transponder system, and is mainly used for receiving transponder information sent by a ground transponder, processing the transponder information to obtain a transponder user message, and reporting the transponder user message to the train operation control system, so that the train operation control system can control train operation conveniently. Referring to fig. 1, the BTM device is mainly composed of a host and an antenna unit. At present, a BTM host is arranged in a vehicle-mounted cabinet in a 19' plug box mode, a BTM antenna is arranged at the bottom of a vehicle through a metal support, the BTM host and the antenna are communicated through a coaxial communication cable, and the BTM host is communicated with a vehicle-mounted signal system through the coaxial communication cable.
The BTM host is installed in the vehicle-mounted cabinet in a 19' plug-in box mode, on one hand, the limited installation space of the vehicle-mounted cabinet is occupied, and the flexibility of the vehicle-mounted cabinet is influenced; on the other hand, the BTM host and the antenna are communicated through a coaxial communication cable at present, and the analog signal transmitted by adopting the coaxial communication cable is easy to be interfered by the train.
Disclosure of Invention
In order to solve the above problems, in one aspect, the present invention discloses an integrated BTM antenna device, which is provided with a first cavity and a second cavity integrally arranged in a same housing, wherein the first cavity and the second cavity are respectively used for installing a BTM host and a BTM antenna; the BTM antenna arranged in the second cavity comprises an antenna plate and a WiFi module; the BTM host arranged in the first cavity is of a double-layer structure and comprises a communication board, a recording board and a decoding board which are arranged on a first layer, and a power supply board, a sending board and a receiving board which are arranged on a second layer;
the BTM host is connected with the WiFi module through a radio frequency line;
the BTM host is also connected with the antenna board through another radio frequency line;
the BTM host is connected with a vehicle-mounted signal system through a CAN communication cable.
Furthermore, the double-layer structures of the BTM host are mutually stacked for clamping and fixing.
Further, the CAN communication cable comprises a power line and a CAN line, and the vehicle-mounted signal system comprises a vehicle-mounted power supply unit and a vehicle-mounted host unit;
the vehicle-mounted power supply unit is connected with the power panel through a power line, and the vehicle-mounted host unit is connected with the communication panel through a CAN line.
Furthermore, the output end of the power panel is respectively connected with the sending panel, the receiving panel, the decoding panel, the communication panel and the recording panel through an I2C bus, and is used for supplying power to the sending panel, the receiving panel, the decoding panel, the communication panel and the recording panel.
Furthermore, the output end of the sending board is connected with the input end of the receiving board through at least two groups of parallel first signal lines adopting a frequency shift keying FSK modulation mode for information transmission;
the output end of the receiving board is connected with the input end of the decoding board through at least two groups of parallel second signal wires;
the output end of the decoding board is connected with the communication board through at least two groups of parallel third signal lines.
Furthermore, the input end of the recording board is also connected to the output ends of the receiving board and the decoding board, respectively, and is used for recording the communication information of the receiving board and the decoding board.
Furthermore, the output end of the decoding board is also connected with the input end of the sending board and used for sending a first signal to the sending board;
the output end of the transmitting plate is also connected with the antenna plate and used for transmitting a second signal to the antenna plate;
the output end of the antenna board is connected with the input end of the transmitting board through a fourth signal line adopting a frequency shift keying FSK modulation mode.
Furthermore, the output end of the decoding board is connected with the input end of the sending board through a fifth signal wire and is used for controlling the input and the output of the power amplifier of the sending board;
the output end of the sending board is connected with the input end of the decoding board through a sixth signal wire and used for monitoring or reading power amplifier alarm information of the sending board.
Still further, the WiFi module is connected with the maintenance computer through WiFi signals and used for data acquisition and software writing of the BTM host.
In another aspect, the present invention further discloses a communication method of the integrated BTM antenna apparatus, which specifically includes the following steps:
the decoding board sends a first signal to the sending board through a fifth signal wire, and the sending board sends a second signal to the antenna board according to the first signal;
the antenna plate radiates a second signal to the ground transponder to activate the ground transponder;
the ground transponder sends two messages of a modulation signal to an uplink in parallel, wherein the uplink refers to a physical channel from the ground transponder to an antenna board;
after receiving the message fed back by the ground responder, the antenna board sends the message back to the sending board through a fourth signal wire;
the sending board filters the received message and outputs a primary signal, and sends the primary signal to the receiving board;
the receiving board filters, amplifies and demodulates the received primary signal, and sends a third signal and a fourth signal to the decoding board;
the decoding board decodes the input third signal and the input fourth signal according to the decoding requirements and outputs the decoded signals to two CPUs of the vehicle-mounted signal system;
the two CPUs carry out cross comparison on the input information, and if the input information is consistent with the input information, the combined information is output;
and the combined information is sent to the vehicle-mounted host unit through a dual-path redundant communication board.
The BTM host and the BTM antenna are integrated in the same shell, so that the installation space in a vehicle-mounted cabinet CAN be saved, and the integrated BTM antenna device is communicated with a vehicle-mounted signal system through a CAN communication cable, so that the problem of interference of train electricity on the BTM radio frequency antenna is thoroughly solved. 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 illustrates a BTM device communication approach according to the prior art;
FIG. 2 illustrates a communication scheme of an integrated BTM antenna apparatus according to an embodiment of the present invention;
fig. 3 is a schematic diagram illustrating a communication process of the integrated BTM antenna apparatus 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.
Referring to fig. 2, the present invention provides an integrated BTM antenna device, which has a first cavity and a second cavity integrally disposed in a same housing, wherein the first cavity and the second cavity are respectively used for mounting a BTM host and a BTM antenna; the BTM antenna arranged in the second cavity comprises an antenna plate and a WiFi module; the BTM host is connected with the WiFi module through a radio frequency line; the BTM host is also connected with the antenna board through another radio frequency line; the BTM host is connected with the vehicle-mounted signal system through a CAN communication cable.
The maintenance computer is used for maintaining the integrated BTM antenna device and is connected with the WiFi module through WiFi signals, so that data acquisition and software writing of the BTM host computer are performed.
The BTM host and the BTM antenna are integrated in the same shell, so that the installation space in the vehicle-mounted cabinet can be saved, the BTM host and the BTM antenna are prevented from being separately installed and occupying a larger installation space, and in addition, the separately installed BTM host and the separately installed BTM antenna also need to be connected by adopting a large number of communication cables, so that more fault points are easily generated. The invention can reduce the fault points of the BTM host and the BTM antenna by integrating the BTM host and the BTM antenna.
As shown in fig. 3, in an embodiment of the present invention, the BTM host disposed in the first cavity has a double-layer structure, and includes a communication board, a recording board, a decoding board disposed in the first layer, and a power board, a sending board, and a receiving board disposed in the second layer, the double-layer structure of the BTM host is stacked on each other for clamping and fixing, and the first layer and the second layer complete signal interaction by means of plug-in connection. Furthermore, the fixing mode of the double-layer structure CAN avoid the situation that a BTM host and an antenna which are separately installed need a large number of CAN communication cables to be connected, so that the number of fault points of installation of the BTM host and the BTM antenna CAN be reduced.
On the other hand, referring to fig. 2, in an embodiment of the present invention, the CAN communication cable includes a power line and a CAN line, where CAN is an abbreviation (hereinafter referred to as CAN) of Controller Area Network, and is a serial communication protocol defined by international organization for standardization iso; the vehicle-mounted signal system comprises a vehicle-mounted power supply unit and a vehicle-mounted host unit; the vehicle-mounted power supply unit is connected with the power panel through a power line, and the vehicle-mounted host unit is connected with the communication panel through a CAN line.
This kind of form of integration BTM antenna device, the coaxial signal transmission of original antenna to the BTM host computer has been cancelled, this coaxial signal has become the inside transmission channel of integration BTM antenna device, the coaxial communication cable that transmits on-vehicle signal system through integration BTM has also become the CAN communication cable that adopts CAN line communication, the digital signal interference killing feature of CAN line communication is far greater than coaxial communication cable (analog signal), thereby the cable of having strengthened BTM module is at the interference killing feature of automobile body, thereby thoroughly solve the electric interference problem to BTM antenna device of train.
The output end of the power panel is respectively connected with the sending panel, the receiving panel, the decoding panel, the communication panel and the recording panel through an I2C bus and used for supplying power to the sending panel, the receiving panel, the decoding panel, the communication panel and the recording panel. The I2C bus is a simple, bi-directional two-wire synchronous serial bus. It requires only two wires to transfer information between devices connected to the bus.
Referring to fig. 3, the output end of the sending board is connected to the input end of the receiving board through at least two sets of parallel first signal lines adopting a frequency shift keying FSK modulation method for information transmission. The output end of the receiving board is connected with the input end of the decoding board through at least two groups of parallel second signal wires. The output end of the decoding board is connected with the communication board through at least two groups of parallel third signal lines. The input end of the recording board is also respectively connected with the output ends of the receiving board and the decoding board and is used for recording the communication information of the receiving board and the decoding board. The output end of the decoding board is also connected with the input end of the sending board and used for sending a first signal to the sending board; the output end of the sending plate is also connected with the antenna plate and used for sending a second signal to the antenna plate; the output end of the antenna board is connected with the input end of the transmitting board through a fourth signal line adopting a frequency shift keying FSK modulation mode.
At least two groups of parallel second signal lines transmit a third signal and a fourth signal;
in an embodiment of the present invention, an output end of the decoding board is connected to an input end of the sending board through a fifth signal line, and is configured to control input and output of a power amplifier of the sending board; the output end of the sending board is connected with the input end of the decoding board through a sixth signal wire and used for monitoring or reading power amplifier alarm information of the sending board.
Specifically, the decoding board can control the on-off of the power amplifier output of the sending board through a fifth signal line, and in addition, the decoding board can read back alarm information output by the power amplifier of the sending board through a sixth signal line.
In an embodiment of the present invention, the present invention further provides a communication method of an integrated BTM antenna device, where the method specifically includes the following steps:
step 1: the decoding board sends a first signal to the sending board through a fifth signal wire, and the sending board sends a second signal to the antenna board according to the first signal;
step 2: the antenna plate radiates a second signal to the ground transponder to activate the ground transponder;
and step 3: the ground transponder sends two messages of a modulation signal to an uplink in parallel, wherein the uplink refers to a physical channel from the ground transponder to an antenna board;
and 4, step 4: after receiving the message sent by the ground transponder, the antenna board sends the message to the sending board through a fourth signal line;
and 5: the sending board filters the received message and outputs a primary signal, and the primary signal is sent to the receiving board through at least two groups of parallel first signal lines;
step 6: the receiving board filters, amplifies and demodulates the received primary signal, and sends a third signal and a fourth signal to the decoding board through at least two groups of parallel second signal lines;
and 7: the decoding board decodes the input third signal and the input fourth signal according to the decoding requirements and outputs the decoded signals to two CPUs of the vehicle-mounted signal system;
and 8: the two CPUs carry out cross comparison on the input information, and if the input information is consistent with the input information, the combined information is output;
and step 9: and the combined information is sent to the vehicle-mounted host unit through a dual-path redundant communication board.
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 (9)
1. An integrated BTM antenna device is characterized in that the device is provided with a first cavity and a second cavity which are integrally arranged in the same shell, and the first cavity and the second cavity are respectively used for installing a BTM host and a BTM antenna; the BTM antenna arranged in the second cavity comprises an antenna plate and a WiFi module; the BTM host arranged in the first cavity is of a double-layer structure and comprises a communication board, a recording board, a decoding board, a power board, a sending board and a receiving board, wherein the communication board, the recording board and the decoding board are arranged on a first layer, and the power board, the sending board and the receiving board are arranged on a second layer;
the double-layer structures of the BTM host are mutually stacked for clamping and fixing, and the first layer and the second layer complete signal interaction in a mode of opposite insertion connection;
the BTM host is connected with the WiFi module through a radio frequency line;
the BTM host is also connected with the antenna board through another radio frequency line;
the BTM host is connected with a vehicle-mounted signal system through a CAN communication cable.
2. The apparatus of claim 1, wherein the CAN communication cable comprises a power line and a CAN line, the onboard signal system comprises an onboard power supply unit and an onboard host unit;
the vehicle-mounted power supply unit is connected with the power panel through a power line, and the vehicle-mounted host unit is connected with the communication panel through a CAN line.
3. The device of claim 1, wherein the output end of the power supply board is connected with the sending board, the receiving board, the decoding board, the communication board and the recording board through an I2C bus respectively, and is used for supplying power to the sending board, the receiving board, the decoding board, the communication board and the recording board.
4. The device of claim 2, wherein the output end of the sending board is connected with the input end of the receiving board through at least two groups of parallel first signal lines adopting a frequency shift keying FSK modulation mode for information transmission;
the output end of the receiving board is connected with the input end of the decoding board through at least two groups of parallel second signal wires;
the output end of the decoding board is connected with the communication board through at least two groups of parallel third signal lines.
5. The apparatus of claim 1, wherein the input terminal of the recording board is further connected to the output terminals of the receiving board and the decoding board, respectively, for recording the communication information of the receiving board and the decoding board.
6. The apparatus of claim 4 wherein the output of the decoder board is further coupled to the input of the transmitter board for transmitting a first signal to the transmitter board;
the output end of the transmitting plate is also connected with the antenna plate and used for transmitting a second signal to the antenna plate;
the output end of the antenna board is connected with the input end of the transmitting board through a fourth signal line adopting a frequency shift keying FSK modulation mode.
7. The device of claim 1, wherein the output terminal of the decoding board is connected with the input terminal of the sending board through a fifth signal line for controlling the input and output of the power amplifier of the sending board;
the output end of the sending board is connected with the input end of the decoding board through a sixth signal wire and used for monitoring or reading power amplifier alarm information of the sending board.
8. The apparatus of any of claims 1-7, wherein the WiFi module is connected to the maintenance computer via a WiFi signal for data acquisition and software writing by the BTM host.
9. A communication method of an integrated BTM antenna device according to any of claims 1-8, wherein the method specifically comprises the steps of:
the decoding board sends a first signal to the sending board, and the sending board sends a second signal to the antenna board according to the first signal;
the antenna board radiates a second signal to a ground transponder, and the ground transponder is activated;
after receiving the message fed back by the ground responder, the antenna board sends the message back to the sending board;
the sending board filters the received message and outputs a primary signal, and sends the primary signal to the receiving board;
the receiving board filters, amplifies and demodulates the received primary signal, and sends a third signal and a fourth signal to the decoding board;
the decoding board decodes the input third signal and the input fourth signal according to the decoding requirements and outputs the decoded signals to two CPUs of the vehicle-mounted signal system;
the two CPUs carry out cross comparison on the input information, and if the input information is consistent with the input information, the combined information is output;
and the combined information is sent to the vehicle-mounted host unit through the communication board.
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| CN202210299061.7A CN114401021B (en) | 2022-03-25 | 2022-03-25 | Integrated BTM antenna device and communication method thereof |
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| CN202210299061.7A CN114401021B (en) | 2022-03-25 | 2022-03-25 | Integrated BTM antenna device and communication method thereof |
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| CN114401021A CN114401021A (en) | 2022-04-26 |
| CN114401021B true CN114401021B (en) | 2022-07-05 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107888470A (en) * | 2017-06-21 | 2018-04-06 | 比亚迪股份有限公司 | Vehicle control syetem |
| CN112671429A (en) * | 2021-01-12 | 2021-04-16 | 山西润泽丰科技股份有限公司 | Transponder transmission system |
| CN114124147A (en) * | 2021-11-30 | 2022-03-01 | 北京交大思诺科技股份有限公司 | Miniaturized transponder |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2011524050A (en) * | 2008-06-12 | 2011-08-25 | マゼラン テクノロジー ピーティーワイ．エルティーディー． | Antenna design and interrogator system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107888470A (en) * | 2017-06-21 | 2018-04-06 | 比亚迪股份有限公司 | Vehicle control syetem |
| CN112671429A (en) * | 2021-01-12 | 2021-04-16 | 山西润泽丰科技股份有限公司 | Transponder transmission system |
| CN114124147A (en) * | 2021-11-30 | 2022-03-01 | 北京交大思诺科技股份有限公司 | Miniaturized transponder |
Non-Patent Citations (1)
| Title |
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| 孙照辉.高速铁路列控车载设备安全技术探讨.《铁路通信信号工程技术》.2013,(第02期), * |
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