CN111665822A - Vehicle-mounted operation control system testing device - Google Patents
Vehicle-mounted operation control system testing device Download PDFInfo
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- CN111665822A CN111665822A CN202010518173.8A CN202010518173A CN111665822A CN 111665822 A CN111665822 A CN 111665822A CN 202010518173 A CN202010518173 A CN 202010518173A CN 111665822 A CN111665822 A CN 111665822A
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- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
- G05B23/0213—Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols
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Abstract
The invention discloses a vehicle-mounted operation control system testing device, which is used for testing and testing functions, performances and interfaces of vehicle-mounted operation control system equipment to be tested. The technical scheme is as follows: the control computer is used for driving and controlling the signal excitation source component, the power supply component and the communication component in real time, loading test software, setting test parameters, sending out control signals, receiving feedback signals and sending the control signals to the man-machine interaction component for display; the human-computer interaction component realizes the human-computer interaction control and monitoring of the testing device; the signal excitation source part receives a control instruction of a control computer, and realizes the safe output and detection of digital switch signals of each channel and the output of continuous waveform signals and pulse signals; the signal conditioning component is connected to the signal source end, and is connected to a direct-current power supply provided by the power supply component through the relay switch circuit and the isolation circuit, so that the output, acquisition and detection of the required voltage level signal are realized; power supply unit, communication unit and external connection unit.
Description
Technical Field
The invention relates to a vehicle-mounted system testing device, in particular to a vehicle-mounted running control system testing device which can be applied to a magnetic levitation traffic vehicle-mounted system.
Background
In the prior art, when the vehicle-mounted operation control system equipment of the magnetic levitation operation control system is tested and tested, more instruments and meters and computers are matched with a communication interface conversion module and the like to build a test environment, test equipment is distributed dispersedly, wiring is complex, complex configuration needs to be carried out manually in each test, different test instruments need to be operated manually frequently, the operation process is complex, and the application of the test tests is limited.
Disclosure of Invention
The following presents a simplified summary of one or more aspects in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects, and is intended to neither identify key or critical elements of all aspects nor delineate the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later.
The invention aims to provide a vehicle-mounted operation control system testing device which can generate various required test excitation signals and detect feedback signals according to different parameter configurations aiming at specific test requirements of train-mounted operation control system equipment with different speed grades, and simultaneously display a test result, thereby realizing the test and the test of the function, the performance and the interface of the vehicle-mounted operation control system equipment to be tested.
The technical scheme of the invention is as follows: the invention discloses a vehicle-mounted operation control system testing device, which comprises a control computer, a human-computer interaction component, a signal excitation source component, a signal conditioning component, a power supply component, a communication component and an external connecting component, wherein the control computer is respectively connected with the human-computer interaction component, the signal excitation source component and the communication component, the signal conditioning component is connected with the signal excitation source component, the power supply component is respectively connected with the control computer, the signal conditioning component and the external connecting component, and the external connecting component is respectively connected with the signal conditioning component and the communication component, wherein:
the control computer is used for realizing the driving and real-time control of the signal excitation source component, the power supply component and the communication component, loading test software, setting test parameters, sending out control signals, receiving feedback signals and sending the feedback signals to the man-machine interaction component for display;
the human-computer interaction component realizes the human-computer interaction control and monitoring of the testing device;
the signal excitation source component is used for receiving a control instruction of a control computer, realizing the safe output and detection of digital switch signals of each channel and the output of continuous waveform signals and pulse signals;
the signal conditioning component is connected to the signal source end, and is connected to a direct-current power supply provided by the power supply component through the relay switch circuit and the isolation circuit, so that the output, acquisition and detection of the required voltage level signal are realized;
the power supply part comprises an adjustable power supply for power supply, an adjustable power supply for signal power supply and a self-powered power supply, wherein the adjustable power supply for power supply and the adjustable power supply for signal power supply are used for providing a direct-current power supply and a signal power supply for a vehicle-mounted control system to be tested, and the self-powered power supply is used for providing a power supply for normal operation of internal parts of the testing device;
the communication component is used for realizing the establishment of a communication test environment under the control of a computer; and
and the external connecting part is used for realizing the mechanical interface connection of the testing device and the vehicle-mounted control system to be tested.
According to an embodiment of the vehicle-mounted operation control system testing device, the control computer is an industrial computer and is connected with other components based on a PCI or PXI bus.
According to an embodiment of the vehicle-mounted operation control system testing device of the present invention, the signal excitation source unit includes a multi-channel digital I/O board card and a multifunctional data acquisition board card, and is connected to the control computer through a PCI or PXI bus, wherein:
the multi-channel digital I/O board card realizes the generation of a source end digital output signal and the detection of a digital input signal, and the control computer performs signal direction configuration, parameter setting, digital output control triggering and digital input state reading on the multi-channel digital I/O board card;
the multifunctional data acquisition board generates a source end waveform output signal, and the control computer downloads onboard program files, parameter commands and control instructions to the multifunctional data acquisition board.
According to an embodiment of the testing device of the vehicle-mounted operation control system, the signal conditioning component comprises a digital output signal conditioning board card, a digital detection signal conditioning board card, a waveform signal conditioning board card, an external interface board card, a signal conditioning motherboard and a packaging case, the signal conditioning motherboard is respectively connected with the signal conditioning component through the digital output signal conditioning board card, the digital detection signal conditioning board card and the waveform signal conditioning board card, wherein:
the digital output signal conditioning board card is used for receiving a source end digital output level signal, controlling and driving a relay node of a corresponding channel to act, and switching on or off a conditioning signal voltage loop of the channel introduced by the external interface board card to realize the digital signal output of a required voltage grade;
the digital detection signal conditioning board is used for receiving external digital signal level transmitted by the external interface board, and conditioning the external digital signal level into a source end digital detection signal transmitting signal excitation source component for carrying out corresponding channel state detection through the isolation circuit and the relay switch circuit;
the waveform signal conditioning board receives a source end waveform output signal, is accessed to an onboard conditioning chip for signal conditioning, and forms an isolated differential level square wave signal and a pulse signal which have the same frequency, the same phase, the same duty ratio and the same pulse width as an input end signal through an onboard high-bandwidth optocoupler isolation circuit;
the external interface board card is used for connecting all external signal cables at the end of the tested equipment and connecting the external connecting parts;
and the signal conditioning motherboard is used for transmitting each path of source end signals, conditioning signals and power supplied by the drive of the conditioning board card.
According to one embodiment of the vehicle-mounted operation control system testing device, the communication part comprises an industrial Ethernet switch, a serial communication board card and a TTY signal converter, wherein the serial communication board card is used for transmitting differential serial communication data, the serial communication board card is used for realizing the transceiving of the differential serial communication data driven by a control computer, and the TTY converter is used for realizing the transceiving of communication data of TTY current loop signals; the industrial Ethernet switch is used for testing the Ethernet communication between the industrial Ethernet switch and the vehicle-mounted control system to be tested.
According to an embodiment of the testing apparatus for vehicle-mounted operation control system of the present invention, the human-computer interaction component employs a KVM switch or a combination of a general-purpose lcd, a keyboard, and a mouse.
According to an embodiment of the in-vehicle operation control system test device of the present invention, the external-connection component includes an external-connection connector and an external connection cable.
Compared with the prior art, the invention has the following beneficial effects: the device of the invention aims at the external signal characteristics and the test requirements of train vehicle-mounted operation control system equipment (especially vehicle-mounted operation control system equipment in a magnetic suspension traffic operation control system), and realizes the detection of various types of excitation signals and output signals required by the test of the tested object. The device integrates the technologies of computer control, data acquisition, signal processing and the like based on a high-speed bus, is flexible in configuration, can flexibly realize excitation output of various required electrical signals by loading electrical signal generating programs with different characteristics, and can be widely applied to testing of magnetic levitation transport control vehicle-mounted operation control systems with low, medium and high speeds and different speed grades. In addition, the device has high integration degree, all test operations are finished in a unified human-computer interface, and the operation is convenient; the structure is in accordance with standardization and standardization, and is suitable for engineering manufacturing production.
Drawings
The above features and advantages of the present disclosure will be better understood upon reading the detailed description of embodiments of the disclosure in conjunction with the following drawings. In the drawings, components are not necessarily drawn to scale, and components having similar relative characteristics or features may have the same or similar reference numerals.
FIG. 1 shows a schematic diagram of an embodiment of the on-board run control system test setup of the present invention.
Fig. 2 shows a detailed schematic diagram of the signal excitation source components in the embodiment shown in fig. 1.
Fig. 3 shows a detailed schematic diagram of the signal conditioning components in the embodiment shown in fig. 1.
Fig. 4 shows a detailed schematic diagram of the power supply components in the embodiment shown in fig. 1.
Fig. 5 shows a detailed schematic diagram of the communication components in the embodiment shown in fig. 1.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. It is noted that the aspects described below in connection with the figures and the specific embodiments are only exemplary and should not be construed as imposing any limitation on the scope of the present invention.
Fig. 1 shows the principle of an embodiment of the on-board operation control system test device of the present invention. Referring to fig. 1, the apparatus of the present embodiment includes: the device comprises a control computer, a human-computer interaction component, a signal excitation source component, a signal conditioning component, a power supply component, a communication component and an external connecting component.
The connection relationship between the components is as follows: the control computer is respectively connected with the human-computer interaction component, the signal excitation source component and the communication component, the signal conditioning component is connected with the signal excitation source component, the power supply component is respectively connected with the control computer, the signal conditioning component and the external connecting component, and the external connecting component is respectively connected with the signal conditioning component and the communication component. And the external connecting part is also connected with the tested vehicle-mounted control system.
All parts in the device adopt or are designed into the size of a standard cabinet upper frame, are installed on a standard size cabinet, and are internally wired according to the standard process of an electrical equipment cabinet.
The following is the principle of implementation of the various components within the device.
The control computer is an industrial computer, is based on PCI (peripheral component interconnect standard) or PXI (PCI expansion for instrument system) bus expansion technology, and is used for realizing the driving and real-time control of the signal excitation source component, the power supply component and the communication component, loading related test software, setting test parameters, sending a control signal, receiving a feedback signal and sending the feedback signal to the man-machine interaction component for display. In addition, the control computer runs the test application software and unifies the human-computer interface, and operators can perform centralized control operation through the human-computer interaction part.
The signal excitation source components are a multi-channel digital I/O board card and a multifunctional data acquisition board card, are connected with a control computer through a PCI or PXI high-speed bus and are driven and controlled by the control computer to receive control instructions of the control computer, and realize the safe output and detection of digital switch signals of each channel and the output of continuous waveform signals and pulse signals.
Fig. 2 shows a further principle of operation of the signal stimulus means controlled by the computer. Referring to fig. 2, a multi-channel digital I/O board card based on a PXI or PCI bus is used to generate a source digital output signal and detect a digital input signal, and the multi-channel digital I/O board card is connected to a control computer through the PXI or PCI bus, and the control computer performs signal direction (input/output) configuration, parameter setting, digital output control triggering, and digital input state reading.
A multifunctional data acquisition board card based on a PXI or PCI bus is adopted to generate a source end waveform output signal, the multifunctional data acquisition board card is connected with a control computer through the PXI or PCI bus, and the control computer downloads onboard program files and issues parameter commands and control instructions.
And loading and operating an onboard program when the multifunctional data acquisition board card is powered on, performing characteristic modulation on pulse width, phase and duty ratio of the required characteristic waveform signal and pulse width modulation and generation of the pulse signal according to input parameters and instructions, and outputting different types of source end waveform signals from the set channel.
The signal source end is connected with the signal conditioning component, and is connected with a direct current power supply provided by the power supply component through the relay switch circuit and the isolation circuit, so that the output, the acquisition and the detection of the required voltage grade signal are realized.
Fig. 3 shows a further implementation principle of the signal conditioning component. Referring to fig. 3, the signal conditioning component is composed of a digital output signal conditioning board, a digital detection signal conditioning board, a waveform signal conditioning board, an external interface board, a signal conditioning motherboard, and a package chassis.
The signal conditioning motherboard is respectively connected with the signal conditioning component through a digital output signal conditioning board card, a digital detection signal conditioning board card and a waveform signal conditioning board card.
The digital output signal conditioning board receives the digital output level signal of the source end, controls and drives the relay node of the corresponding channel to act, and switches on or off a conditioning signal voltage loop led into the channel by the external interface board, so as to realize the digital signal output (generally DC24V or DC110V) with the required voltage level.
The digital detection signal conditioning board receives an external digital signal level (DC24V or DC110V grade) transmitted by the external interface board, and the external digital signal level is conditioned to be a source end digital detection signal transmitting signal excitation source component for carrying out corresponding channel state detection through an isolation circuit and a relay switch circuit on the digital detection signal conditioning board. The conditioning refers to signal conditioning, that is, converting a detected original signal into a recognizable signal, and the means includes level conversion, voltage-current conversion, waveform modulation, and the like, and here, the level conversion is performed.
The waveform signal conditioning board receives a waveform output signal of a source end, is accessed to an onboard conditioning chip on the waveform signal conditioning board for signal conditioning, and forms an isolated differential level square wave signal and a pulse signal which have the same frequency, the same phase, the same duty ratio and the same pulse width as an input end signal through an onboard high-bandwidth optical coupling isolation circuit on the waveform signal conditioning board.
The external interface board card is responsible for all connections with the external signal cable of the tested equipment end and is connected with the external connection part.
The signal conditioning motherboard is responsible for transmitting each path of source end signals, conditioning signals and power supply of the drive of the conditioning board card.
Fig. 4 shows a further implementation principle of the power supply component. Referring to fig. 4, the power supply components are divided into an adjustable power supply for power supply, an adjustable power supply for signal power supply and a self-powered power supply, wherein the adjustable power supply for power supply and the adjustable power supply for signal power supply are programmable dc power supplies for industry, are connected with a control computer through ethernet or serial communication, receive parameter design and control instructions of the control computer, and provide a dc power supply and a signal power supply for a control system carried by a vehicle to be tested; the self-powered power supply is a fixed power module that provides power for the normal operation of the internal components of the test apparatus, typically DC 24V.
Fig. 5 shows a further implementation principle of the communication means. Referring to fig. 5, the communication component mainly includes an industrial ethernet switch, a serial communication board, a TTY signal converter, and the like, and is used for establishing a communication test environment under control of a computer.
The transmission of differential serial communication data is realized by adopting an RS422 serial communication board card based on a PXI or PCI bus, the serial communication board card is connected with the control computer through the PXI or PCI bus, and the differential serial communication data is transmitted and received by the drive of the control computer.
The control computer is provided with an RS232 and is connected with the TTY converter, so that communication data receiving and sending of TTY (current loop for remote transmission communication) current loop standard signals are realized.
The testing device is provided with an industrial Ethernet switch and is used for realizing Ethernet communication testing between the testing device and a vehicle carrying and controlling system of a tested vehicle.
The external connecting part comprises an external connector and an external connecting cable and is used for realizing the mechanical interface connection of the testing device and the vehicle-mounted control system to be tested.
The man-machine interaction part can adopt a KVM switcher, and can also adopt a combination of a general liquid crystal display, a keyboard and a mouse, and the man-machine interaction control and monitoring of the testing device are mainly realized.
While, for purposes of simplicity of explanation, the methodologies are shown and described as a series of acts, it is to be understood and appreciated that the methodologies are not limited by the order of acts, as some acts may, in accordance with one or more embodiments, occur in different orders and/or concurrently with other acts from that shown and described herein or not shown and described herein, as would be understood by one skilled in the art.
Those of skill would further appreciate that the various illustrative logical blocks, modules, circuits, and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The various illustrative logical blocks, modules, and circuits described in connection with the embodiments disclosed herein may be implemented or performed with a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC. The ASIC may reside in a user terminal. In the alternative, the processor and the storage medium may reside as discrete components in a user terminal.
In one or more exemplary embodiments, the functions described may be implemented in hardware, software, firmware, or any combination thereof. If implemented in software as a computer program product, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a computer. By way of example, and not limitation, such computer-readable media can comprise RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. Any connection is properly termed a computer-readable medium. For example, if the software is transmitted from a web site, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), or wireless technologies such as infrared, radio, and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of medium. Disk (disk) and disc (disc), as used herein, includes Compact Disc (CD), laser disc, optical disc, Digital Versatile Disc (DVD), floppy disk and blu-ray disc where disks (disks) usually reproduce data magnetically, while discs (discs) reproduce data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media.
The previous description of the disclosure is provided to enable any person skilled in the art to make or use the disclosure. Various modifications to the disclosure will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other variations without departing from the spirit or scope of the disclosure. Thus, the disclosure is not intended to be limited to the examples and designs described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. The utility model provides a vehicle-mounted operation control system testing arrangement, a serial communication port, the device is including control computer, man-machine interaction part, signal excitation source part, signal conditioning part, power supply unit, communication part and external adapting unit, control computer respectively with man-machine interaction part, signal excitation source part, communication part connects, signal conditioning part and signal excitation source part connect, power supply unit respectively with control computer, signal conditioning part, external adapting unit connects, external adapting unit respectively with signal conditioning part, communication part connects, wherein:
the control computer is used for realizing the driving and real-time control of the signal excitation source component, the power supply component and the communication component, loading test software, setting test parameters, sending out control signals, receiving feedback signals and sending the feedback signals to the man-machine interaction component for display;
the human-computer interaction component realizes the human-computer interaction control and monitoring of the testing device;
the signal excitation source component is used for receiving a control instruction of a control computer, realizing the safe output and detection of digital switch signals of each channel and the output of continuous waveform signals and pulse signals;
the signal conditioning component is connected to the signal source end, and is connected to a direct-current power supply provided by the power supply component through the relay switch circuit and the isolation circuit, so that the output, acquisition and detection of the required voltage level signal are realized;
the power supply part comprises an adjustable power supply for power supply, an adjustable power supply for signal power supply and a self-powered power supply, wherein the adjustable power supply for power supply and the adjustable power supply for signal power supply are used for providing a direct-current power supply and a signal power supply for a vehicle-mounted control system to be tested, and the self-powered power supply is used for providing a power supply for normal operation of internal parts of the testing device;
the communication component is used for realizing the establishment of a communication test environment under the control of a computer; and
and the external connecting part is used for realizing the mechanical interface connection of the testing device and the vehicle-mounted control system to be tested.
2. The vehicle-mounted operation control system test device according to claim 1, wherein the control computer is an industrial computer and is connected to other components based on a PCI or PXI bus.
3. The vehicle-mounted operation control system test device according to claim 1, wherein the signal excitation source unit includes a multi-channel digital I/O board card and a multifunctional data acquisition board card, and is connected to the control computer through a PCI or PXI bus, wherein:
the multi-channel digital I/O board card realizes the generation of a source end digital output signal and the detection of a digital input signal, and the control computer performs signal direction configuration, parameter setting, digital output control triggering and digital input state reading on the multi-channel digital I/O board card;
the multifunctional data acquisition board generates a source end waveform output signal, and the control computer downloads onboard program files, parameter commands and control instructions to the multifunctional data acquisition board.
4. The vehicle-mounted operation control system testing device according to claim 1, wherein the signal conditioning component comprises a digital output signal conditioning board card, a digital detection signal conditioning board card, a waveform signal conditioning board card, an external interface board card, a signal conditioning motherboard and a packaging case, the signal conditioning motherboard is respectively connected with the signal conditioning component through the digital output signal conditioning board card, the digital detection signal conditioning board card and the waveform signal conditioning board card, wherein:
the digital output signal conditioning board card is used for receiving a source end digital output level signal, controlling and driving a relay node of a corresponding channel to act, and switching on or off a conditioning signal voltage loop of the channel introduced by the external interface board card to realize the digital signal output of a required voltage grade;
the digital detection signal conditioning board is used for receiving external digital signal level transmitted by the external interface board, and conditioning the external digital signal level into a source end digital detection signal transmitting signal excitation source component for carrying out corresponding channel state detection through the isolation circuit and the relay switch circuit;
the waveform signal conditioning board receives a source end waveform output signal, is accessed to an onboard conditioning chip for signal conditioning, and forms an isolated differential level square wave signal and a pulse signal which have the same frequency, the same phase, the same duty ratio and the same pulse width as an input end signal through an onboard high-bandwidth optocoupler isolation circuit;
the external interface board card is used for connecting all external signal cables at the end of the tested equipment and connecting the external connecting parts;
and the signal conditioning motherboard is used for transmitting each path of source end signals, conditioning signals and power supplied by the drive of the conditioning board card.
5. The vehicle-mounted operation control system testing device according to claim 1, wherein the communication component comprises an industrial Ethernet switch, a serial communication board card and a TTY signal converter, wherein the serial communication board card is used for transmitting differential serial communication data, the serial communication board card is used for realizing the transceiving of the differential serial communication data driven by the control computer, and the TTY converter is used for realizing the transceiving of communication data of TTY current loop signals; the industrial Ethernet switch is used for testing the Ethernet communication between the industrial Ethernet switch and the vehicle-mounted control system to be tested.
6. The vehicle-mounted operation control system testing device according to claim 1, wherein the human-computer interaction component is a KVM switch or a combination of a general-purpose liquid crystal display, a keyboard and a mouse.
7. The on-board running control system testing device according to claim 1, wherein the external connection component includes an external connector and an external connection cable.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112671936A (en) * | 2021-03-17 | 2021-04-16 | 湖南中车时代通信信号有限公司 | Special transmission module adapting method and device for different domestic systems |
| CN112671936B (en) * | 2021-03-17 | 2021-05-28 | 湖南中车时代通信信号有限公司 | Special transmission module adapting method and device for different domestic systems |
| WO2022193624A1 (en) * | 2021-03-17 | 2022-09-22 | 湖南中车时代通信信号有限公司 | Specific transmission module adaptation method and apparatus across different domestic systems |
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| CN111665822B (en) | 2023-01-20 |
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