Safety computer testing device
By designing a safety computer test device that includes a control host cage, a port adapter cage, a signal conditioning cage, and a programmable power supply, the problem of the limited functionality of existing devices is solved. This enables comprehensive verification of the safety computer platform and TACS system testing, improving the versatility and reliability of the test.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO LTD
- Filing Date
- 2025-04-28
- Publication Date
- 2026-05-12
AI Technical Summary
Existing security computer platform testing devices have limited functionality and cannot meet the development needs of TACS-based systems, nor can they fully verify the security, reliability, and usability of security computers.
Design a security computer test device that uses commercial off-the-shelf components, including a control host cage, a port adapter cage, a signal conditioning cage, and a programmable power supply. Through the combination of various boards and cages, it can realize single-board testing, system testing, and fault injection of security computers, and support the testing of TACS systems.
实现了对安全计算机平台的全面验证，发现设计缺陷，适应不同测试场景，具有高通用性和可维护性，降低研发成本。
Smart Images
Figure CN224232174U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of rail vehicle technology, and in particular relates to a safety computer testing device. Background Technology
[0002] The TACS system, based on vehicle-to-vehicle communication and employing resource management principles, is characterized by deep integration of signaling and vehicle systems, enabling the transformation of train operation from automated to autonomous operation. In the TACS system, trackside equipment is simplified into ground target controllers controlled by the onboard controller, which in turn undertakes interlocking control and safety protection functions. To meet the performance requirements of both the onboard and ground target controllers, a more powerful safety computer platform is needed.
[0003] The safety computer platform testing device is used in the development of safety computers to simulate the operating environment of the safety computer during train operation, thereby ensuring the development quality of the safety computer platform.
[0004] However, existing security computer platform testing devices typically suffer from limited functionality, only able to verify one aspect of the security, reliability, and availability of the security computer platform, and are unable to meet the simulation requirements of the operating environment of security computer platforms developed based on the TACS system. Utility Model Content
[0005] The purpose of this invention is to solve one of the above-mentioned technical problems by providing a security computer testing device. This device is designed with commercial off-the-shelf components and can be used not only for single-board testing, system testing, and fault injection of security computers, but also for testing TACS systems.
[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0007] A secure computer testing apparatus includes: a control host chassis, a port adapter chassis, a signal conditioning chassis, and a programmable power supply;
[0008] The control host chassis is connected to the port adapter module of the port adapter chassis and the safety computer under test, respectively.
[0009] The signal conditioning cage is connected to the port adapter module of the port adapter cage and the security computer under test, respectively.
[0010] The programmable power supply is connected to the control host chassis and the safety computer under test, respectively.
[0011] In some embodiments of this utility model, the control host chassis includes a control host and an expansion board; the expansion board is connected to the motherboard of the control host through a PCI / PCIe slot, and the expansion board is connected to the port adapter module of the port adapter chassis.
[0012] In some embodiments of this utility model, the expansion board includes a digital I / O board, an AD acquisition board, a DA conversion board, a serial communication board, and a CAN communication board;
[0013] The digital I / O board, AD acquisition board, and DA conversion board are all connected to the corresponding boards in the signal conditioning chassis via the port conversion chassis.
[0014] In some embodiments of this utility model, the digital I / O board, AD acquisition board, DA conversion board, serial communication board, and CAN communication board are all connected to the security computer under test.
[0015] In some embodiments of this utility model, the signal conditioning cage includes a level conversion board, a signal conversion board, and a signal conditioning board.
[0016] In some embodiments of this invention, the level conversion board includes a digital I / O input board and a digital I / O output board; the signal conditioning board includes at least one FPGA.
[0017] In some embodiments of this utility model, the expansion board includes a digital I / O board, an AD acquisition board, and a DA conversion board;
[0018] The signal conditioning chassis includes a level conversion board, a signal conversion board, and a signal conditioning board; the digital I / O board is connected to the level conversion board and the signal conditioning board through the port conversion chassis; the AD acquisition board and the DA conversion board are connected to the signal conversion board through the port conversion chassis.
[0019] In some embodiments of this invention, the control host chassis communicates with the safety computer under test via a serial communication interface and / or a CAN communication interface; the signal conditioning chassis communicates with the safety computer under test via I / O quantities.
[0020] In some embodiments of this utility model, a cabinet is further included, in which the control host cage, port adapter cage, and signal conditioning cage are all disposed.
[0021] In some embodiments of this utility model, the cabinet includes a 3U chassis, a 4U chassis, and a 6U chassis; the control host chassis is disposed in the 4U chassis, the signal conditioning chassis is disposed in the 6U chassis, and the port adapter chassis is disposed in the 3U chassis.
[0022] The beneficial effects of this utility model are as follows:
[0023] 1. The testing device provided by this utility model organically integrates the control host cage, port adapter cage, signal conditioning cage and programmable power supply. It can be used not only for single-board testing, system testing and fault injection of security computers, but also for testing TACS systems. It is beneficial to discover design defects in the development process of security computer platforms and can more comprehensively verify the security, reliability and usability of security computers developed based on TACS systems.
[0024] 2. The testing device provided by this utility model has a clear division of labor among its various components, which work together to facilitate flexible configuration and expansion according to different testing needs, so as to adapt to different testing scenarios. For example, it can be used for testing both vehicle-mounted controllers and ground object controllers, and has high versatility and maintainability.
[0025] 3. The testing device provided by this utility model is simple to implement, cost-controllable, and highly expandable. Attached Figure Description
[0026] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0027] Figure 1 This is a schematic diagram of a secure computer testing device;
[0028] Figure 2 A schematic diagram of the connection structure of the control unit's cage;
[0029] Figure 3 A schematic diagram of the connection structure of the port adapter cage;
[0030] Figure 4 This is a schematic diagram of the connection structure of the signal conditioning machine cage. Detailed Implementation
[0031] To make the objectives, technical solutions, and advantages of this application clearer, the application is described and illustrated below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application. All other embodiments obtained by those skilled in the art based on the embodiments provided in this application without inventive effort are within the scope of protection of this application.
[0032] Obviously, the accompanying drawings described below are merely some examples or embodiments of this application. For those skilled in the art, these drawings can be applied to other similar scenarios without any creative effort.
[0033] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
[0034] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms “a,” “an,” “an,” and similar words used in this application do not indicate quantity limitation and may indicate singular or plural. The terms “comprising,” “including,” “having,” and any variations thereof used in this application are intended to cover non-exclusive inclusion.
[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0036] The technical solution of this utility model will be described in detail below with reference to specific embodiments and the accompanying drawings.
[0037] As attached Figure 1 -Appendix Figure 4 As shown in an illustrative embodiment of a secure computer testing device according to this utility model, the testing device includes a control host chassis, a port adapter chassis, a signal conditioning chassis, and a programmable power supply.
[0038] The port adapter cage includes a port adapter module, which is used to connect the control host cage and the signal conditioning cage.
[0039] The control host chassis is connected to the port adapter module of the port adapter chassis and the security computer under test. Communication between the control host chassis and the security computer under test is achieved through a communication interface. This communication interface includes serial communication (RS232 / RS485 / RS422) and CAN communication; this type of communication does not require isolation and is directly connected to the security computer under test.
[0040] The signal conditioning chassis connects to the port adapter module of the port adapter chassis and the security computer under test via a backplane bus. The control host chassis communicates with the security computer under test via I / O signals through the signal conditioning chassis. These I / O signals include both digital and analog I / O signals. This type of communication requires isolation and conditioning before output, and must pass through the signal conditioning chassis before being connected to the security computer under test.
[0041] The programmable power supply is connected to the control host chassis and the safety computer under test, respectively, to provide power to the control host chassis and the safety computer under test.
[0042] The input and output of this testing device are divided into I / O quantities and communication interfaces.
[0043] The testing apparatus provided in the above illustrative embodiments can simulate a real secure computer operating environment, shorten the development cycle of secure computers, and reduce R&D costs. Compared with existing technologies, it has the advantages of simple implementation, controllable cost, and strong scalability.
[0044] In some embodiments of this utility model, such as Figure 2 As shown, the boards in the control unit cage are Commercial Off-the-Shelf (CTOS) devices, including the control unit and expansion boards.
[0045] In this embodiment, the industrial control host and PCI / PCIe boards used for the control host and expansion cards are shown in Table 1.
[0046] Table 1. Composition of Control Host Chassis Equipment
[0047]
[0048] The expansion cards are connected to the motherboard of the control host via PCI / PCIe slots, and the expansion cards are connected to the port adapter module of the port adapter cage.
[0049] In some embodiments of this utility model, the expansion board includes five different types of PCI / PCIe boards, namely, digital I / O board, AD acquisition board, DA conversion board, serial communication board and CAN communication board.
[0050] The digital I / O board, AD acquisition board, DA conversion board, serial communication board, and CAN communication board are all connected to the security computer under test.
[0051] The digital I / O board uses PCIE-1751 to provide switch inputs or outputs for the security computer.
[0052] The AD acquisition board uses PCI-1706 to convert analog voltage signals into digital signals and acquire analog current or voltage signals output by the safety computer platform.
[0053] The DA converter board uses PCI-1720 to generate analog voltage signals, providing the required analog voltage signals for the secure computer platform.
[0054] The serial communication board uses a PCIe-1622 interface to provide a serial (RS422 / RS485) communication interface for the security computer platform. It connects to a programmable power supply via an RS232 serial port to control the power input of the security computer under test.
[0055] The CAN communication board uses PCIE-1680 to provide a CAN communication interface for a secure computer platform.
[0056] The digital I / O board, AD acquisition board, and DA conversion board are all connected to the corresponding boards in the signal conditioning chassis via the port conversion chassis.
[0057] In some embodiments of this utility model, as shown in the appendix Figure 3 As shown, the port adapter module includes multiple terminal blocks, each of which provides a terminal block interface for connecting the signal conditioning chassis board to the expansion board in the control host chassis.
[0058] In some embodiments of this utility model, as shown in the appendix Figure 4 As shown, the signal conditioning cage includes three types of boards: a level conversion board, a signal conversion board, and a signal conditioning board. These boards are used to perform precision control and level matching of signals to solve problems such as poor accuracy or level mismatch in signals generated by the PCI / PCIe boards in the control host cage.
[0059] In some embodiments of this invention, the level conversion board includes a digital I / O input board and a digital I / O output board. The digital I / O input board is used to acquire the digital I / O output of the security computer, and the digital I / O output board is used to provide digital I / O input to the security computer.
[0060] In this embodiment, the level conversion board is used to isolate and convert the 5V digital I / O signals of the PCIe-1851 to the 24V digital I / O signals of the secure computer platform. The digital I / O signals of the PCIe-1851 are configured in groups of eight as GPIOs to drive eight inputs or outputs of the level conversion board, and one level conversion board provides up to 48 digital I / O signals.
[0061] The signal conditioning board includes at least one FPGA. The FPGA is controlled to generate the speed pulse signal required by the speed sensor, the pulse signal required by the radar, and the CD level signal required by the beacon reader. The 48 output I / O signals of the PCIe-1851 are configured as a GPIO bus. Read and write operations to the FPGA are performed through the GPIO bus, controlling the FPGA to divide the clock and generate pulse signals. Since the FPGA outputs a 3.3V pulse signal, the level needs to be boosted according to the device requirements. The analog speed sensor requires a 12V pulse signal with a frequency range of -10kHz to 10kHz, the analog Doppler radar requires a 24V pulse signal with a frequency range of 0 to 66.7kHz, and the beacon reader CD pulse requires a 24V pulse signal.
[0062] In this embodiment, a signal conditioning board generates 16 frequency pulses, 12 velocity pulses, 2 Doppler radar pulses, and 2 beacon reader CD signals, which can simulate 4 velocity sensors, 2 Doppler radars, and 2 beacon readers.
[0063] The signal conversion board filters the current through a standard resistor, converting it into a voltage signal for use by the AD conversion board. It also receives voltage signals from the DA conversion board, filters them, and outputs a voltage signal.
[0064] For the current loop signal output by the safety computer, the signal conversion board converts the current loop into voltage. The PCI-1706 then acquires and converts the voltage before sending it to the vehicle simulation software. For the PWM signal output by the safety computer, the signal conversion board receives the voltage, and the PCI-1706 acquires and converts the voltage before sending it to the vehicle simulation software.
[0065] It should be noted that the circuit boards in the signal conditioning cage can be configured with different types and quantities according to different testing requirements, and the test equipment can be adapted for testing vehicle controllers or ground object controllers.
[0066] In some embodiments of this invention, the expansion board includes a digital I / O board, an AD acquisition board, and a DA conversion board. The signal conditioning chassis includes a level conversion board, a signal conversion board, and a signal conditioning board.
[0067] The digital I / O board is connected to the level conversion board and signal conditioning board via a port conversion cage.
[0068] The AD acquisition board and DA conversion board are connected to the signal conversion board through a port conversion chassis.
[0069] The level conversion board, signal conversion board, and signal conditioning board are all connected to the security computer under test.
[0070] In some embodiments of this utility model, a 19-inch standard cabinet is further included, in which the control host cage, port adapter cage, and signal conditioning cage are all disposed.
[0071] Specifically, the 19-inch standard cabinet consists of 3U, 4U, and 6U chassis. The control host chassis is located in the 4U chassis, the signal conditioning chassis is located in the 6U chassis, and the port adapter chassis is located in the 3U chassis.
[0072] In some embodiments of this utility model, a computer monitor and a computer input device are further included, wherein the computer monitor is connected to the control host chassis via HDMI, and the computer input device is connected to the control host chassis via USB.
[0073] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.
[0074] The above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.
Claims
1. A secure computer testing device, characterized in that, include: Control main unit cage, port adapter cage, signal conditioning cage and programmable power supply; The control host chassis is connected to the port adapter module of the port adapter chassis and the safety computer under test, respectively. The signal conditioning cage is connected to the port adapter module of the port adapter cage and the security computer under test, respectively. The programmable power supply is connected to the control host chassis and the safety computer under test, respectively.
2. The secure computer testing device according to claim 1, characterized in that, The control host chassis includes a control host and expansion cards; the expansion cards are connected to the motherboard of the control host via PCI / PCIe slots, and the expansion cards are connected to the port adapter module of the port adapter chassis.
3. The secure computer testing device according to claim 2, characterized in that, The expansion board includes a digital I / O board, an AD acquisition board, a DA conversion board, a serial communication board, and a CAN communication board; The digital I / O board, the AD acquisition board, and the DA conversion board are all connected to the corresponding boards in the signal conditioning chassis via the port adapter chassis.
4. The secure computer testing device according to claim 3, characterized in that, The digital I / O board, the AD acquisition board, the DA conversion board, the serial communication board, and the CAN communication board are all connected to the security computer under test.
5. The secure computer testing device according to claim 1, characterized in that, The signal conditioning cage includes a level conversion board, a signal conversion board, and a signal conditioning board.
6. The secure computer testing apparatus according to claim 5, characterized in that, The level conversion board includes a digital I / O input board and a digital I / O output board; the signal conditioning board includes at least one FPGA.
7. The secure computer testing apparatus according to claim 2 or 3, characterized in that, The expansion board includes a digital I / O board, an AD acquisition board, and a DA conversion board; The signal conditioning chassis includes a level conversion board, a signal conversion board, and a signal conditioning board; the digital I / O board is connected to the level conversion board and the signal conditioning board through the port adapter chassis; the AD acquisition board and the DA conversion board are connected to the signal conversion board through the port adapter chassis.
8. The secure computer testing apparatus according to claim 1, characterized in that, The control host cage communicates with the safety computer under test via a serial communication interface and / or a CAN communication interface; the signal conditioning cage communicates with the safety computer under test via I / O signals.
9. The secure computer testing device according to claim 1, characterized in that, It further includes a cabinet, in which the control host cage, port adapter cage, and signal conditioning cage are all housed.
10. The secure computer testing apparatus according to claim 9, characterized in that, The cabinet includes a 3U chassis, a 4U chassis, and a 6U chassis; the control host chassis is located in the 4U chassis, the signal conditioning chassis is located in the 6U chassis, and the port adapter chassis is located in the 3U chassis.