Low-cost data management processor with cache recording function
By integrating the design of data storage recording card, power conversion and acquisition module and data acquisition management module, combined with embedded multi-core processor, the problem of high cost of data management processor is solved, and low-cost and high-integration data management and fast data acquisition are achieved.
Patent Information
- Application Number
- CN202422858366.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-22
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-11-22
AI Technical Summary
Existing data management processors have high costs in modular design, and it is difficult to reduce costs and improve integration while ensuring normal functioning.
It adopts an integrated design of data storage recording card, power conversion and acquisition module, and data acquisition management module, connected through SATA bus and CRM connector, combined with embedded multi-core processor and real-time operating system, to achieve comprehensive data scheduling and processing, reduce the modularization of power conversion and signal acquisition, and use a single SOC to complete module task scheduling and data management.
The integration of the data management processor is improved at a low cost, ensuring the rapid collection, storage and acquisition of flight data while reducing product costs.
Smart Images
Figure CN223486543U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of avionics technology, specifically relating to a low-cost data management processor with fast recording function. Background Technology
[0002] The data management and recording subsystem is a crucial component of the aircraft avionics system. Within this subsystem, the data management processor and cache recorder respectively collect, monitor, and store flight parameters during flight. Typically, to enhance modularity, the data management processor is designed with separate processing boards for different data acquisition tasks, connected using a master board, which significantly increases product cost. With the increasing emphasis on cost control, minimizing costs and improving product integration while ensuring the normal operation of user-required functions has become a pressing need. Utility Model Content
[0003] Purpose of the utility model: To provide a low-cost data management processor with a fast recording function.
[0004] Technical solution:
[0005] A low-cost data management processor with retrieval recording function includes: a data storage recording card, a power conversion and acquisition module, and a data acquisition and management module, wherein...
[0006] The data storage record card and the data acquisition management module are connected via a SATA bus. The data acquisition management module and the power conversion and acquisition module are connected via a CRM connector. The data storage record card is used to classify and store the flight data collected on board. The power conversion and acquisition module is used to receive an external 28V DC power supply, and after secondary power conversion, it provides different power supplies to the internal boards, while also collecting flight parameters on board. The data acquisition management module is used to realize comprehensive data scheduling and processing, Ethernet online maintenance, and support online loading and debugging of software configurations.
[0007] Furthermore, the power conversion and acquisition module includes an input preprocessing unit, an energy storage circuit unit, a DC / DC conversion unit, a CRM connector, a DC signal conditioning unit, an acquisition circuit unit, an analog interface unit, a frequency signal interface unit, a discrete signal interface unit, and a module physical interface; among which,
[0008] The external power supply is +28V. After passing through the input preprocessing unit and the energy storage circuit unit, the power supply is converted to ±15V and +5V through the DC / DC conversion unit. After the secondary conversion, it is connected to the CRM connector.
[0009] The DC signal converted from the module's physical interface is input to the CRM connector after passing through the DC signal conditioning unit;
[0010] Discrete, frequency, and analog quantities converted by the module's physical interface are processed by the acquisition circuit unit, and then input to the CRM connector after passing through the discrete quantity interface unit, frequency quantity interface unit, and analog quantity interface unit, respectively.
[0011] Furthermore, the data acquisition and management module includes a processing unit, which uses a single SOC to complete module task scheduling, time stamp management, data packaging, data acquisition, communication management, and self-testing.
[0012] Furthermore, the processing unit collects various types of flight data through the RS-422 bus acquisition unit.
[0013] Furthermore, the module's physical interface uses a circular panel connector directly soldered onto the printed circuit board, and the signals include: RS-422 and Ethernet.
[0014] Furthermore, the data storage record card adopts a SATA controller + NAND flash memory chip array architecture.
[0015] Beneficial effects:
[0016] The low-cost data management processor with caching recording function enables the normal operation of various data functions on the acquisition unit, such as photoelectric video, GJB289A, forward video, analog quantity, frequency quantity, discrete quantity, RS-422, etc., while improving the integration of the data management processor and reducing product costs. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall connection of this utility model.
[0018] Figure 2 This is a schematic diagram of the power conversion and acquisition module of this utility model.
[0019] Figure 3 This is a schematic diagram of the data acquisition and management module of this utility model.
[0020] Figure 4 This is a block diagram of the data transmission record card principle.
[0021] Figure 5 This is a block diagram for signal acquisition. Detailed Implementation
[0022] like Figure 1-5 A low-cost data management processor with fast recording function mainly consists of a data storage recording card, a power conversion and signal acquisition module, and a data acquisition and management module.
[0023] The data storage and recording card is used to classify and store the flight data collected on board; the power conversion and signal acquisition module is used to receive an external 28V DC power supply, and after secondary power conversion, provide different power supplies to the internal boards, while collecting flight parameters on board; the data acquisition and management module is used to realize comprehensive data scheduling and processing, Ethernet online maintenance, and support online loading and debugging of software configuration.
[0024] 1. Overall connection
[0025] A schematic diagram of the entire low-cost data management processor connection is shown below. Figure 1 As shown, the data acquisition and management module completes bus data acquisition and overall flight data management. It sends data to the data transmission record card via the SATA 3.0 bus for data storage. The data transmission record card is connected to the data acquisition and management module via a CRM connector. The power conversion and signal acquisition module completes +28V power conversion and non-bus data acquisition, including discrete, frequency, and analog signals.
[0026] 2. Power Conversion and Signal Acquisition Module
[0027] The module mainly includes a DC signal conditioning unit, an analog interface unit, a frequency signal interface unit, a discrete signal interface unit, an input preprocessing unit, a power management unit, an energy storage circuit unit, a DC / DC conversion unit, and a module physical interface. The schematic diagram is shown below. Figure 2 As shown.
[0028] Power conversion:
[0029] The external power supply is +28V, and the DC / DC power chip performs secondary conversion between ±15V and +5V power. At the same time, it enables the +5V power supply to power the various functional modules inside the data management processor. The selected power module has functions such as reverse connection protection, lightning protection, inrush current suppression, and filtering.
[0030] Signal acquisition:
[0031] The signal acquisition system consists of 15 channels of 422 signal acquisition circuits, 60 channels of discrete signal acquisition circuits, 2 channels of frequency signal acquisition circuits, 8 channels of DC analog signal acquisition circuits, and 4 channels of millivolt DC analog signal acquisition circuits. The block diagram is shown below. Figure 5 As shown.
[0032] The RS-422A bus interface requires 15 RS-422A bus inputs. The interface uses a single-chip full-duplex level conversion chip MAX3490EESA to implement level conversion for one receive and one transmit channel. A total of 15 chips are needed to realize the interface processing of 15 channels.
[0033] The switching quantity conditioning circuit is a general-purpose circuit, including a front-end interface circuit, a multiplexer, an AD conversion circuit, etc. The front-end interface circuit realizes the signal filtering and signal isolation functions, the multiplexer selects the acquisition channel, the AD conversion circuit converts the discrete signal into a digital signal, and the ARM processor determines the switching quantity status.
[0034] The frequency conditioning circuit is used to condition the rotation speed signal from the onboard sensor and convert it into a square wave signal that can be acquired by the processor or digital chip. This signal is then sent to the SoC, where the SoC's PL unit acquires the frequency.
[0035] The analog signal acquisition interface includes a signal conditioning circuit and an AD conversion circuit. The signal conditioning circuit performs functions such as analog signal attenuation, filtering, and signal amplification. The AD conversion circuit converts the analog signal into a digital signal, and the AD conversion control timing logic is output by the SoC programmable logic unit.
[0036] The DC signal conditioning unit completes the conditioning of 8 DC signals. It uses a resistor network attenuation circuit to attenuate the large DC input signal to the front end into a normal DC signal; it uses a high-precision operational amplifier circuit to amplify the small DC input signal at the millivolt level to the front end into a normal DC signal; and it uses a high-precision resistor conditioning circuit to convert the current signal into a voltage signal.
[0037] The input preprocessing unit mainly implements power supply filtering, input voting, surge suppression, and spike suppression.
[0038] 3. Data Acquisition and Management Module
[0039] The data acquisition and management module consists of a processing unit, an RS-422 bus interface unit, an RS-422 bus acquisition unit, a GJB289A bus acquisition module, an Ethernet communication interface unit, a GJB289A communication interface unit, a power conversion unit, a module physical interface, a CRM connector, and a STAT controller. See the schematic diagram below. Figure 3 As shown.
[0040] The processing unit uses a single SOC to complete tasks such as module task scheduling, time stamp management, data packaging, data acquisition, communication management, and self-testing.
[0041] The RS-422 bus interface unit is mainly used for level conversion of RS-422 signals to achieve electrical matching with the processing unit.
[0042] The GJB289A bus interface unit enables communication with the mission machine. As a terminal of the mission system bus network (GJB289A), it responds to system scheduling commands and records relevant bus data. As a bus (GJB289A) monitor, it monitors and records the data on the bus, and the recorded data items can be parsed on the ground.
[0043] The RS-422 bus acquisition unit is used to acquire various types of flight data.
[0044] The Ethernet bus interface unit enables communication with video cameras to acquire forward-looking video information; communication with the task unit to transmit commands and data; communication with optoelectronic devices to receive optoelectronic images; communication with the field detection processor / 5G terminal (switching unit) for product maintenance or communication; and communication with 5G millimeter-wave equipment for use in the research phase.
[0045] The power conversion unit converts the externally input power to power each unit.
[0046] The module's physical interface uses a circular connector on the panel that is directly soldered onto the printed circuit board. The signals include RS-422 and 5-channel Ethernet bus.
[0047] The CRM connector is used for connection with the power module.
[0048] The SATA controller sends various types of flight data that need to be stored to the data storage card via the SATA 3.0 bus.
[0049] 4. Data storage record card
[0050] like Figure 4 As shown, the data storage recording card adopts a SATA controller + NAND flash memory chip array architecture, featuring small size and high read / write speed. The data storage recording card consists of a power conversion unit, a hot-swap identification control unit, a SATA controller, and a NAND flash memory chip array. The NAND flash chip's bit error rate meets the requirement of not exceeding 10. -7 The power conversion unit filters and converts the supplied 3.3V power into the power required by the chip. The hot-swap identification and control unit mainly implements hot-swap management, determines and outputs the presence of the data transmission card, and performs card management operations by judging the card's presence signal.
[0051] This invention relates to a low-cost data management processor with fast recording functionality. It employs a top-down design based on a highly integrated concept, combining a fast recorder with a data management processor through the cooperation of an embedded multi-core processor and a real-time operating system. This enables low-cost acquisition, storage management, and rapid retrieval of flight data. Ultimately, while ensuring the normal operation of the functions required by the user, it minimizes costs and improves product integration to achieve rapid data acquisition, storage, and retrieval.
[0052] This invention utilizes limited space to combine power conversion and signal acquisition, achieving high integration and reducing product costs. A single System-on-Chip (SoC) controls communication between two modules, and an operating system enables parallel operation of both modules. Under low cost, it provides both data management and data logging functions, supporting low-cost management and rapid downloading of flight data.
Claims
1. A low-cost data management processor with cache recording function, characterized in that, include: Data storage and recording card, power conversion and acquisition module, and data acquisition and management module, among which, The data storage record card is connected to the data acquisition management module via a SATA bus, and the data acquisition management module is connected to the power conversion and acquisition module via a CRM connector. The data storage record card is used to classify and store the flight data collected on board. The power conversion and acquisition module receives an external 28V DC power supply, which, after secondary power conversion, provides different power supplies to various internal boards, while also acquiring flight parameters from the aircraft. The data acquisition and management module is used to realize comprehensive data scheduling and processing, Ethernet online maintenance, and support online loading and debugging of software configurations.
2. The low-cost data management processor with cache recording function according to claim 1, characterized in that, The power conversion and acquisition module includes an input preprocessing unit, an energy storage circuit unit, a DC / DC conversion unit, a CRM connector, a DC signal conditioning unit, an acquisition circuit unit, an analog interface unit, a frequency signal interface unit, a discrete signal interface unit, and a module physical interface; among which... The external power supply is +28V. After passing through the input preprocessing unit and the energy storage circuit unit, the power supply is converted to ±15V and +5V through the DC / DC conversion unit. After the secondary conversion, it is connected to the CRM connector. The DC signal converted from the module's physical interface is input to the CRM connector after passing through the DC signal conditioning unit; Discrete, frequency, and analog quantities converted by the module's physical interface are processed by the acquisition circuit unit, and then input to the CRM connector after passing through the discrete quantity interface unit, frequency quantity interface unit, and analog quantity interface unit, respectively.
3. The low-cost data management processor with cache recording function according to claim 1, characterized in that, The data acquisition and management module includes a processing unit, which uses a single SOC to complete module task scheduling, time stamp management, data packaging, data acquisition, communication management, and self-testing.
4. The low-cost data management processor with cache recording function according to claim 2, characterized in that, The processing unit collects various types of flight data through the RS-422 bus acquisition unit.
5. The low-cost data management processor with cache recording function according to claim 2, characterized in that, The module's physical interface uses a circular connector on the panel that is directly soldered onto the printed circuit board. The signals include RS-422 and Ethernet.
6. The low-cost data management processor with cache recording function according to claim 1, characterized in that, The data storage record card adopts a SATA controller + NAND flash memory chip array architecture.