Embedded engine state data acquisition device

Abstract

The utility model discloses an embedded engine state data acquisition device, which comprises a case, a backboard, a power supply module, a conditioning module, an acquisition module and a control module, the power supply module and the control module are respectively fixed on two opposite side walls in the case, the backboard is fixed on one side, close to a rear panel, in the case, and the conditioning module is fixed on the other side of the case. The conditioning module and the acquisition module are arranged in the case and are positioned between the power supply module and the control module; a power supply aviation plug, a signal input aviation plug, a communication aviation plug and an antenna aviation plug are arranged on a rear panel of the case; the power supply module and the control module are respectively connected with the back plate through flexible connectors, and the conditioning module and the acquisition module are respectively inserted into slots on the back plate through 96-core connectors; the power supply aviation plug, the communication aviation plug, the signal input aviation plug and the antenna aviation plug are connected with the backboard through flexible connectors. According to the utility model, the working state data of the engine can be acquired and sent to the upper computer, so that the automatic and intelligent diagnosis capability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of data acquisition devices, in particular to an embedded engine state data acquisition device. Background Art

[0002] With the advancement of science and technology, engine performance is improving. However, as a complex mechanical system, engine failures can occur and develop rapidly and be extremely destructive. The reliability of engine performance directly impacts the safety of the entire system. Therefore, monitoring engine operating status and quickly locating fault locations are currently of great concern. In light of this, we propose an embedded engine status data acquisition device that collects engine operating status data and transmits this monitoring data to a host computer. Utility Model Content

[0003] The purpose of this utility model is to provide an embedded engine status data acquisition device to solve the problems existing in the above-mentioned prior art, which can realize the collection of engine working status data and send the monitoring data to the host computer, thereby improving the automation and intelligent diagnosis capabilities.

[0004] To achieve the above purpose, the present invention provides the following solutions:

[0005] The utility model provides an embedded engine status data acquisition device, comprising a chassis, a backplane, a power module, a conditioning module, an acquisition module and a control module, wherein the power module and the control module are respectively fixed to two opposite side walls inside the chassis, the backplane is fixed to a side of the chassis close to the rear panel, the conditioning module and the acquisition module are arranged inside the chassis and located between the power module and the control module, and the rear panel of the chassis is provided with a power supply aerial plug, a signal input aerial plug, a communication aerial plug and an antenna aerial plug;

[0006] The power module is connected to the backplane via a first flexible connector, the control module is connected to the backplane via a second flexible connector, and the conditioning module and the acquisition module are respectively inserted into slots on the backplane via 96-core connectors;

[0007] The power supply aviation plug is connected to the backplane via a third flexible connector, the communication aviation plug is connected to the backplane via a fourth flexible connector, the signal input aviation plug is connected to the backplane via a fifth flexible connector, and the antenna aviation plug is connected to the backplane via a sixth flexible connector;

[0008] The power supply module supplies power to the conditioning module, the acquisition module and the control module through the lines on the backplane, and the backplane provides a signal interconnection channel between the conditioning module, the acquisition module and the control module.

[0009] In one embodiment, a conditioning module plug-in rail and a collection module plug-in rail are provided in the chassis, the conditioning module is plugged and installed on the conditioning module plug-in rail, and the collection module is plugged and installed on the collection module plug-in rail.

[0010] In one embodiment, the conditioning module is provided with at least one.

[0011] In one embodiment, a wireless communication module is reserved in the control module.

[0012] In one embodiment, a data light, a power light, and a fault light are provided on the rear panel of the chassis, and the data light, the power light, and the fault light are electrically connected to the control module respectively.

[0013] In one embodiment, the four side panels of the chassis except the front panel and the rear panel are all provided with threaded holes for mounting corner pieces by means of bolts.

[0014] In one embodiment, two side panels of the chassis for mounting the power module and the control module are fixed to the chassis frame by bolts.

[0015] In one embodiment, the front panel and the rear panel of the chassis are both connected and fixed to the chassis frame by bolts.

[0016] Compared with the prior art, the utility model has achieved the following technical effects:

[0017] The embedded engine status data acquisition device provided by the present invention is characterized in that the external signal to be acquired (sensor input signal) is introduced into the backplane through the signal input aviation plug, and is respectively connected to different conditioning modules through the backplane wiring. The conditioning module converts the signal to be acquired into an analog voltage signal, which is then connected to the analog signal channel of the backplane through an analog switch. The FPGA (Field Programmable Gate Array) on the acquisition module controls the ADC (Analog-to-Digital Converter) to quantize and encode the analog signal, and temporarily stores the quantized data. The data is then uploaded to the control module through a digital bus. The control module analyzes and calculates the collected data information and uploads the analysis results to the terminal, thereby realizing the collection, analysis, calculation, storage, and forwarding functions of the engine working status data, and improving the automation and intelligent diagnosis capabilities. In addition, the power module and the control module are respectively fixed on the opposite side walls inside the chassis, and the heat can be conducted and dissipated through the chassis shell to ensure the heat dissipation performance of the device and ensure stable operation of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 Schematic diagram of the structure of the embedded engine status data acquisition device in an embodiment of the present utility model;

[0020] Figure 2 This is a rear view of the embedded engine status data acquisition device in an embodiment of the present utility model;

[0021] Figure 3 It is a side view of the embedded engine status data acquisition device in an embodiment of the present utility model;

[0022] Figure 4 It is a top view of the embedded engine status data acquisition device in an embodiment of the present utility model;

[0023] Figure 5 This is a schematic diagram of the connection between the power module, control module and backplane inside the chassis in an embodiment of the present utility model;

[0024] Figure 6 This is a schematic diagram of the exploded structure of the embedded engine status data acquisition device in an embodiment of the present utility model;

[0025] Figure 7This is a schematic diagram of the interconnection of various modules in the embodiment of the present utility model;

[0026] Figure 8 This is a power-on initialization flow chart in an embodiment of the present utility model.

[0027] In the figure: 1-chassis, 2-backplane, 3-power module, 4-conditioning module, 5-acquisition module, 6-control module, 7-rear panel, 8-power aerial plug, 9-signal input aerial plug, 10-communication aerial plug, 11-antenna aerial plug, 12-conditioning module plug-in guide, 13-acquisition module plug-in guide, 14-data light, 15-power light, 16-fault light, 17-front panel, 18-side panel, 19-corner fitting, 20-chassis frame. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] The purpose of the utility model is to provide an embedded engine status data acquisition device to solve the problems existing in the prior art, which can realize the collection of engine working status data and send the monitoring data to the host computer, thereby improving the automation and intelligent diagnosis capabilities.

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0031] like Figures 1-8 As shown, the utility model provides an embedded engine status data acquisition device, including a chassis 1, a backplane 2, a power module 3, a conditioning module 4, an acquisition module 5 and a control module 6. The power module 3 and the control module 6 are respectively fixed on the opposite side walls inside the chassis 1, the backplane 2 is fixed on the side of the chassis 1 close to the rear panel 7, the conditioning module 4 and the acquisition module 5 are arranged in the chassis 1 and located between the power module 3 and the control module 6, and the rear panel 7 of the chassis 1 is provided with a power supply aerial socket 8, a signal input aerial socket 9, a communication aerial socket 10 and an antenna aerial socket 11;

[0032] The power module 3 is connected to the backplane 2 via a first flexible connector, the control module 6 is connected to the backplane 2 via a second flexible connector, and the conditioning module 4 and the acquisition module 5 are respectively inserted into the slots on the backplane 2 via 96-core connectors;

[0033] The power aerial plug 8 is connected to the backplane 2 through a third flexible connector, the communication aerial plug 10 is connected to the backplane 2 through a fourth flexible connector, the signal input aerial plug 9 is connected to the backplane 2 through a fifth flexible connector, and the antenna aerial plug 11 is connected to the backplane 2 through a sixth flexible connector;

[0034] The power module 3 supplies power to the conditioning module 4 , the acquisition module 5 and the control module 6 through the lines on the backplane 2 , and the backplane 2 provides a signal interconnection channel between the conditioning module 4 , the acquisition module 5 and the control module 6 .

[0035] The functions of each module in this device are described as follows:

[0036] (1) Backplane: Provides power to each module and realizes the signal interconnection requirements between modules; the interconnection between modules is as follows: Figure 7 shown.

[0037] (2) Power module: converts the external power supply into the main power supply of the system and provides overvoltage and overcurrent protection functions.

[0038] (3) Conditioning module: converts various external sensor signals into electrical signals, performs necessary filtering, amplification and other conditioning processes on the signals, and supports the self-test function of each conditioning channel.

[0039] (4) Acquisition module: realizes analog-to-digital conversion of analog signals. The single board supports 20-channel analog signal acquisition.

[0040] (5) Control module: realizes system initialization, self-test, parameter configuration, data analysis and processing, data dump and upload functions. This module reserves a wireless communication module to realize GPS, WIFI and 4G LTE expansion functions.

[0041] Among them, the backplane 2 is a passive backplane, and the power supply air plug 8 is an external 24V power input channel to power the entire machine. The signal input air plug 9 is a signal input channel for various sensors and instruments. The communication air plug 10 includes a debugging serial port, a gigabit Ethernet and a CAN interface. Among them, gigabit Ethernet is an interface for debugging the control module 6, and data can also be transmitted through this network port under normal use. This device is deployed at the engine terminal and is used to collect various physical quantities and electrical signals at the engine site, analyze and calculate the collected data information, and send the analysis results to the PHM computer through wired or wireless transmission, so as to realize the collection, analysis, calculation, storage and forwarding functions of the engine working status data, and improve the automation and intelligent diagnosis capabilities. In addition, the power module 3 and the control module 6 are respectively fixed on the opposite side walls inside the chassis 1, and their heat can be conducted and dissipated through the chassis shell to ensure the heat dissipation performance of the device and ensure the stable operation of the device.

[0042] The working process of this device is as follows:

[0043] (1) The external signal to be collected is introduced into the backplane 2 through the signal input aviation plug 9, and is connected to different conditioning modules 4 through the backplane 2;

[0044] (2) The conditioning module 4 converts the signal to be collected into an analog voltage signal that meets certain amplitude requirements, and then connects it to the 20 analog signal channels of the backplane 2 through the analog switch;

[0045] (3) The FPGA on the acquisition module 5 controls the ADC to quantize and encode the 20-channel analog signals, temporarily stores the quantized data, and then uploads the data to the control module 6 via the digital bus;

[0046] (4) The control module 6 analyzes and calculates the collected data information and uploads the analysis results to the PHM computer.

[0047] In this embodiment, a conditioning module plug-in rail 12 and a collection module plug-in rail 13 are provided in the chassis 1. The conditioning module 4 is plugged and installed on the conditioning module plug-in rail 12, and the collection module 5 is plugged and installed on the collection module plug-in rail 13, which facilitates the installation and positioning of the conditioning module 4 and the collection module 5.

[0048] There is at least one type of conditioning module 4, and different types of conditioning modules 4 can be reduced or increased according to on-site needs. In this embodiment, there are two types of conditioning modules 4.

[0049] In this embodiment, a data light 14 , a power light 15 and a fault light 16 are provided on the rear panel of the chassis 1 , and the data light 14 , the power light 15 and the fault light 16 are electrically connected to the control module 6 respectively.

[0050] In this embodiment, the four side panels 18 of the chassis 1, except the front panel 17 and the rear panel 7, are provided with threaded holes for mounting angle pieces 19 via bolts, so that the device can be mounted and fixed in different orientations via the angle pieces 19.

[0051] In this embodiment, the two side panels 18 of the chassis 1 for mounting the power module 3 and the control module 6 are fixed to the chassis frame 20 by bolts, and the front panel 17 and the rear panel 7 of the chassis 1 are also fixed to the chassis frame 20 by bolts. This facilitates assembly and disassembly and facilitates maintenance and repair.

[0052] The working principle of this device is mainly divided into the following parts: power-on initialization, working mode and self-test mode. The following describes the system operation process in each state.

[0053] Power-on initialization process, such as Figure 8 As shown:

[0054] After power-on, the power module outputs +3.3V, +5V, and ±12V power to power the entire device.

[0055] The control module sets the system working mode and initializes the acquisition module according to the default configuration or external instructions.

[0056] After the system is initialized, the control module can switch channels by controlling the analog switch, and further complete the self-test operation of each conditioning channel and the analog channel calibration operation.

[0057] After completing the above work, the system enters normal working state.

[0058] Working mode:

[0059] In working mode, the device realizes all functions such as conditioning, collecting, analyzing, calculating, storing and forwarding external input signals. The system working process is as follows:

[0060] The signal to be conditioned (sensor input signal) is conditioned by the conditioning module and then output to the acquisition module via the backplane analog signal channel. The conditioning circuits for different sensor signals vary. For example, the signal conditioning circuit for a PT100 temperature sensor includes a constant current source, instrumentation amplifier, filter, and amplifier, while the conditioning circuit for a charge-type vibration sensor includes a charge amplifier, filter, and amplifier.

[0061] The acquisition module uses the onboard FPGA as its core processing unit. Under the FPGA's control, the ADC samples, holds, quantizes, and converts the input analog signals into digital signals. All signals are buffered within the FPGA and then uploaded to the control module via a digital bus. Furthermore, the FPGA outputs several GPIO signals to the various conditioning modules. These GPIO signals directly control the analog switches within each conditioning module, enabling time-sharing acquisition between them.

[0062] The control module performs necessary analysis operations (digital filtering, normalization, time domain analysis, frequency domain analysis, feature extraction, etc.) on the received data and sends the operation results to the PHM computer via wired or wireless transmission.

[0063] Self-test mode:

[0064] This device supports system self-test and can enter self-test mode by command when the system is idle. After entering self-test mode, the device will complete the self-test operation of related functions according to the input command. After the self-test is completed, the self-test results are printed out through the debug serial port and the device exits self-test mode at the same time.

[0065] The self-test contents include: digital bus test between the control module and the acquisition module, interrupt test, ADC test, channel self-test, analog switch test and FPGA function test according to the function.

[0066] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. An embedded engine status data acquisition device, characterized by: The computer comprises a chassis, a backplane, a power module, a conditioning module, an acquisition module, and a control module. The power module and the control module are respectively fixed to two opposite side walls inside the chassis. The backplane is fixed to a side of the chassis near the rear panel. The conditioning module and the acquisition module are arranged inside the chassis and located between the power module and the control module. The rear panel of the chassis is provided with a power supply connector, a signal input connector, a communication connector, and an antenna connector. The power module is connected to the backplane via a first flexible connector, the control module is connected to the backplane via a second flexible connector, and the conditioning module and the acquisition module are respectively inserted into slots on the backplane via 96-core connectors; The power supply aviation plug is connected to the backplane via a third flexible connector, the communication aviation plug is connected to the backplane via a fourth flexible connector, the signal input aviation plug is connected to the backplane via a fifth flexible connector, and the antenna aviation plug is connected to the backplane via a sixth flexible connector; The power supply module supplies power to the conditioning module, the acquisition module and the control module through the lines on the backplane, and the backplane provides a signal interconnection channel between the conditioning module, the acquisition module and the control module.

2. The embedded engine status data acquisition device according to claim 1, characterized in that: A conditioning module plug-in guide rail and a collection module plug-in guide rail are provided in the chassis. The conditioning module is plug-in installed on the conditioning module plug-in guide rail, and the collection module is plug-in installed on the collection module plug-in guide rail.

3. The embedded engine status data acquisition device according to claim 1, characterized in that: The conditioning module is provided with at least one.

4. The embedded engine status data acquisition device according to claim 1, characterized in that: A wireless communication module is reserved in the control module.

5. The embedded engine status data acquisition device according to claim 1, characterized in that: A data light, a power light and a fault light are provided on the rear panel of the chassis, and the data light, the power light and the fault light are electrically connected to the control module respectively.

6. The embedded engine status data acquisition device according to claim 1, characterized in that: The four side panels of the chassis except the front panel and the rear panel are all provided with threaded holes for mounting angle pieces by means of bolts.

7. The embedded engine status data acquisition device according to claim 1, characterized in that: The two side panels of the chassis are used to install the power module and the control module and are fixed to the chassis frame by bolts.

8. The embedded engine status data acquisition device according to claim 1, characterized in that: The front panel and the rear panel of the chassis are both connected and fixed to the chassis frame by bolts.

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