Slow variable parameter and rapid variable parameter integrated acquisition system and acquisition method

Abstract

The invention discloses an integrated acquisition system and an integrated acquisition method for a slowly-varying parameter and a rapidly-varying parameter, and solves the problems that when an existing Dewei acquisition system is used for acquiring the slowly-varying parameter and the rapidly-varying parameter in a rocket engine test scene, the acquisition efficiency is high; the technical problems of insufficient time synchronization precision of a slowly varying parameter and a rapidly varying parameter, low manual data fusion efficiency, easy introduction of human errors, tedious operation process and weak ability to adapt to a complex aerospace scene exist in the prior art. A parameter classification configuration module, a synchronous trigger control module, a time-sharing processing algorithm module and a fusion storage module are arranged in an upper computer carrying OXYGEN software, synchronous control of a DEWE3-RM16 master control unit and a DEWE3-RM16 slave control unit by adopting a clock can be realized, and the time deviation of a slowly varying parameter and a rapidly varying parameter is controlled within 1ms; and multi-parameter correlation analysis requirements of scenes such as airspace engine test run and spacecraft attitude control are completely met.

Description

Technical Field

[0001] This invention relates to a data acquisition system and method, specifically to an integrated acquisition system and method for slowly varying parameters and rapidly varying parameters. Background Technology

[0002] The DeWeichuang acquisition system, used for acquiring slowly varying and rapidly varying parameters in rocket engine testing scenarios, requires at least two sets of acquisition hardware and a corresponding number of host computers for real-time previewing, acquisition, and data processing. However, the existing DeWeichuang acquisition system has several technical shortcomings when acquiring slowly varying and rapidly varying parameters in high-precision scenarios of aerospace engine testing, as detailed below: 1. Insufficient time synchronization accuracy fails to meet the requirements of correlation analysis. The two sets of acquisition hardware each have independent clock modules. Without a hardware-level synchronization mechanism, the acquisition time deviation between slowly changing parameters (such as pipeline pressure and engine outer wall temperature) and rapidly changing parameters (such as vibration signals) is generally ≥10ms. In aerospace engine test scenarios, this deviation will cause a misalignment between the timeline of vibration peak values ​​and pressure mutation points observed during post-test processing. If an anomaly occurs during engine testing and the problem needs to be identified, such as a 10ms delay during engine startup, it may lead to misjudging the causal relationship between vibration anomalies and pressure parameter fluctuations by post-test processing personnel, directly affecting the accuracy of fault location. Furthermore, aerospace engine test measurements typically require multi-parameter time alignment to be within 10ms, which the existing architecture cannot fully accommodate.

[0003] 2. Manual data fusion is inefficient and prone to introducing human error. Data collected by the two sets of hardware is stored as separate files. It then needs to be manually imported using third-party software (such as LMS) or compatible software (such as Oxygen) and aligned based on the timestamp (ignition signal sent from the test control station). Taking a single test bench commissioning as an example, 10 hours of collected data, including temperature, strain (gradually changing), and impact and vibration (rapidly changing), requires 4-6 hours to manually fuse. Furthermore, operational errors are prone to occur in timestamp matching and outlier screening. In a previous ground test of a certain type of rocket engine, the excessively long test duration and numerous changes in operating conditions led to some distortion in the correlation analysis of temperature drift and structural vibration due to manual alignment errors, thus delaying subsequent testing.

[0004] 3. The operation process is cumbersome and has weak adaptability to complex aerospace scenarios. Each hardware unit requires individual parameter configuration (such as sampling frequency, filtering mode, trigger conditions, and excitation settings) and acquisition control. In engine tests with multiple operating conditions, if only one operator needs to frequently switch between the two systems, it not only increases the workload but also makes it more prone to start-up delays or parameter setting errors in emergency trigger scenarios (such as engine abnormal shutdown monitoring). Increasing the number of operators would also affect the need for job optimization. Furthermore, the separate deployment of power supply and wiring for independent hardware increases the complexity of system deployment and the difficulty of troubleshooting.

[0005] 4. High data storage and management costs, poor compatibility. Independently acquired data files occupy 1.3-1.5 times the storage space of integrated storage, and the data formats of different hardware have slight differences, requiring additional format conversion before importing into aerospace-specific analysis platforms (such as MATLAB modules and LabVIEW test suites). In long-term rocket engine testing, the transfer and backup of a large number of independent files will occupy the limited storage space of the data aggregation computer, while also increasing the risk of data loss. Summary of the Invention

[0006] The purpose of this invention is to solve the technical problems of existing Deweytron acquisition systems when acquiring slowly varying parameters and rapidly varying parameters in rocket engine test scenarios, such as insufficient time synchronization accuracy of slowly varying parameters and rapidly varying parameters, low efficiency of manual data fusion and easy introduction of human error, cumbersome operation process, and weak adaptability to complex aerospace scenarios. The invention provides an integrated acquisition system and method for slowly varying parameters and rapidly varying parameters.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A system for integrating slowly varying and rapidly varying parameters is characterized by comprising a DEWE3-RM16 master control unit and n DEWE3-RM16 slave control units, each with an internal clock, a power supply module, a network switch, and a host computer running OXYGEN software. The host computer is connected to the network interfaces of the DEWE3-RM16 master control unit and the n DEWE3-RM16 slave control units via the network switch. The output of the power supply module is connected to the power supply terminals of the DEWE3-RM16 master control unit and the n DEWE3-RM16 slave control units, respectively; n≥1. The DEWE3-RM16 master control unit serves as the synchronization signal host, and its signal acquisition interface is used to connect to the slowly varying parameter sensors in the rocket engine test scenario. The DEWE3-RM16 master control unit and n DEWE3-RM16 slave control units are connected sequentially through the SYNC / IO interface. The signal acquisition interfaces of the n DEWE3-RM16 slave control units are respectively used to connect to the rapidly varying parameter sensors in the rocket engine test scenario. The host computer is equipped with a parameter classification and configuration module, a synchronous trigger control module, a time-sharing processing algorithm module, and a fusion storage module, which are respectively used to set parameter attributes for the DEWE3-RM16 master control unit and n DEWE3-RM16 slave control units, synchronously trigger the acquisition of slowly changing parameters and rapidly changing parameters, perform parallel processing of slowly changing parameters and rapidly changing parameters, and align and save the timestamps of slowly changing parameters and rapidly changing parameters.

[0008] Furthermore, the DEWE3-RM16 master control unit and the n DEWE3-RM16 slave control units are each equipped with multiple Trion-1820 acquisition boards, and the first board is a TRION-BASE board used to receive timing signals.

[0009] Furthermore, the parameter classification configuration module supports setting parameter attributes through a visual interface. The parameter attributes include rapidly changing parameter attributes, gradually changing parameter attributes, and configuration file parameter export format. The rapidly changing parameter attributes include the rapidly changing parameter sampling frequency and anti-aliasing filter coefficient. The gradually changing parameter attributes include the gradually changing parameter sampling frequency and temperature compensation coefficient. The configuration file parameter export format is XML format. The synchronous triggering control module includes a hardware triggering synchronous control circuit and a phase-locked loop circuit. The hardware triggering synchronous control circuit triggers the DEWE3-RM16 master control unit to synchronously start n DEWE3-RM16 slave control units to collect slowly changing parameters and rapidly changing parameters based on the pulse signal generated by the DEWE3-RM16 master control unit. The phase-locked loop circuit is used to monitor the clock deviation between the DEWE3-RM16 master control unit and the n DEWE3-RM16 slave control units in real time, and dynamically compensates for the triggering delay of the n DEWE3-RM16 slave control units based on the real-time monitoring results. The time-division processing algorithm module incorporates a 5th-order Butterworth filter algorithm and a moving average algorithm. The 5th-order Butterworth filter algorithm is used for high-frequency sampling and filtering of slowly varying parameters, while the moving average algorithm is used for low-frequency stabilization of rapidly varying parameters. The fusion storage module has a built-in timestamp alignment algorithm. The timestamp alignment algorithm uses the main control unit clock as a reference to interpolate and match the slowly changing parameters to the time axis of the rapidly changing parameters, forming slowly changing parameters and rapidly changing parameters with a unified timestamp and saving them. The accuracy of the timestamp is 1ms.

[0010] Furthermore, the slowly varying parameter sensor includes a pressure sensor and a temperature sensor, used to collect pressure and temperature data in the rocket engine test scenario; The rapidly varying parameter sensor includes a vibration sensor and a pulsating pressure sensor, used to collect vibration acceleration and pulsating pressure in rocket engine test scenarios.

[0011] Furthermore, a 22Ω resistor is connected in series at the signal acquisition interface of the DEWE3-RM16 master control unit and the n DEWE3-RM16 slave control units to suppress signal reflection.

[0012] Furthermore, a power filter circuit is connected between the power supply terminal of the DEWE3-RM16 master control unit and the output terminal of the power module of the n DEWE3-RM16 slave control units.

[0013] Furthermore, the DEWE3-RM16 master control unit and the SYNC / IO interfaces of the n DEWE3-RM16 slave control units are all connected via PCIe cables.

[0014] This invention also provides an integrated acquisition method for slowly varying parameters and rapidly varying parameters, characterized in that: based on the aforementioned integrated acquisition system for slowly varying parameters and rapidly varying parameters, the method includes the following steps: Step 1: Connect the signal acquisition interface of the DEWE3-RM16 master control unit to the slowly changing parameter sensor in the rocket engine test scenario, and connect the signal acquisition interfaces of n DEWE3-RM16 slave control units to the rapidly changing parameter sensor in the rocket engine test scenario respectively. Step 2: Start the OXYGEN software via the host computer to automatically detect the hardware connection status and clock synchronization accuracy. If the deviation is >1ms, the internal calibration program of the OXYGEN software will be triggered. Step 3: Set parameter attributes for the DEWE3-RM16 master control unit and n DEWE3-RM16 slave control units through the host computer, and trigger the DEWE3-RM16 master control unit to synchronously start the n DEWE3-RM16 slave control units to collect slowly changing parameters and rapidly changing parameters according to the pulse signal generated by the DEWE3-RM16 master control unit. Step 4: Process the slowly changing parameters and the rapidly changing parameters in parallel through the host computer, and align and save the timestamps of the slowly changing parameters and the rapidly changing parameters.

[0015] Furthermore, in step 3, the specific steps of triggering the DEWE3-RM16 master control unit to synchronously start n DEWE3-RM16 slave control units to collect slowly changing parameters and rapidly changing parameters based on the pulse signal are as follows: Step a: The hardware trigger synchronization control circuit in the host computer collects pulse signals, generates trigger signals, and synchronously inputs them to the DEWE3-RM16 master control unit through the network switch. The DEWE3-RM16 master control unit outputs synchronous trigger signals to n DEWE3-RM16 slave control units to synchronously trigger the collection of slowly changing parameters and rapidly changing parameters. Step b: Simultaneously with step a, the phase-locked loop circuit acquires the clock signals of the DEWE3-RM16 master control unit and n DEWE3-RM16 slave control units, and calculates the clock deviation between the clock signals of the n DEWE3-RM16 slave control units and the clock signal of the DEWE3-RM16 master control unit. Step c: The phase-locked loop circuit dynamically compensates for the trigger delay of n DEWE3-RM16 slave control units according to the clock deviation.

[0016] Furthermore, in step c, dynamic compensation is performed on n DEWE3-RM16 slave control units every 10ms.

[0017] The beneficial effects of this invention are: 1. The present invention provides an integrated acquisition system and method for slowly varying parameters and rapidly varying parameters. A parameter classification and configuration module, a synchronous trigger control module, a time-division processing algorithm module, and a fusion storage module are set up in the host computer equipped with OXYGEN software. This enables the DEWE3-RM16 master control unit and the DEWE3-RM16 slave control unit to be synchronously controlled using a clock, keeping the time deviation between slowly varying parameters and rapidly varying parameters within 1ms. This fully meets the multi-parameter correlation analysis requirements of scenarios such as aerospace engine testing and spacecraft attitude control.

[0018] 2. The present invention provides an integrated acquisition system and method for slowly varying parameters and rapidly varying parameters, which uses a DEWE3-RM16 master control unit and multiple DEWE3-RM16 slave control units in cascade, enabling data time synchronization between multiple DEWE3-RM16 slave control units.

[0019] 3. The present invention provides an integrated acquisition system and method for slowly changing parameters and rapidly changing parameters. Operators complete the classification setting and acquisition control of all parameters through the parameter classification configuration module. The trigger signal is uniformly generated by the DEWE3-RM16 main control unit. Hardware cascading only requires a single PCIe cable for physical connection. With the integrated power supply design, the difficulty of system deployment and maintenance is reduced.

[0020] 4. The present invention provides an integrated acquisition system and method for slowly varying parameters and rapidly varying parameters, which provides a unified storage format for slowly varying parameters and rapidly varying parameters, and the process does not require manual intervention, thus eliminating human error. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the connection structure of an embodiment of the integrated acquisition system for slowly varying parameters and rapidly varying parameters according to the present invention; The attached figures are labeled as follows: 1-DEWE3-RM16 main control unit, 2-DEWE3-RM16 slave control unit, 3-power module, 4-network switch, 5-host computer. Detailed Implementation

[0022] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] This embodiment presents an integrated acquisition system for slowly varying and rapidly varying parameters, such as... Figure 1 As shown, it includes a DEWE3-RM16 master control unit 1, two DEWE3-RM16 slave control units 2, a power module 3, a network switch 4, and a host computer 5.

[0024] The output of power module 3 is connected to the power supply terminals of DEWE3-RM16 master control unit 1 and the two DEWE3-RM16 slave control units 2 to provide voltage. To avoid electromagnetic interference affecting the stability of data acquisition in the complex test environment, a power filter circuit is set between the output of power module 3 and each power supply terminal.

[0025] The DEWE3-RM16 master control unit 1 and the two DEWE3-RM16 slave control units 2 are all equipped with clocks and multiple Trion-1820 acquisition boards. The first board of each board is a TRION-BASE board used to receive timing signals.

[0026] The DEWE3-RM16 master control unit 1 acts as the synchronization signal host. Its signal acquisition interface connects to the slowly varying parameter sensors (including pressure and temperature sensors, used to collect pressure and temperature data in the rocket engine test scenario) in the rocket engine test scenario, enabling it to acquire slowly varying parameters (0.1Hz-100Hz). The SYNC / IO interface is connected sequentially to the SYNC / IO interfaces of the two DEWE3-RM16 slave control units 2 via PCIe cables. The signal acquisition interfaces of the two DEWE3-RM16 slave control units 2 are respectively used to connect to the rapidly varying parameter sensors (including vibration and pulsating pressure sensors, used to collect vibration acceleration and pulsating pressure data in the rocket engine test scenario), enabling them to acquire rapidly varying parameters (5000Hz-1MHz). The SYNC / IO interface in the DEWE3-RM16 can be used as a synchronization signal transmitting or receiving interface.

[0027] In this embodiment, a 22Ω resistor is connected in series between the DEWE3-RM16 master control unit 1 and the slowly varying parameter sensor, and between the two DEWE3-RM16 slave control units 2 and the signal acquisition interface, respectively, to suppress signal reflection.

[0028] Network switch 4 acts as a data relay station, transmitting the pulse signal of DEWE3-RM16 master control unit 1, as well as the collected slowly changing parameters and corresponding clock signals, and the rapidly changing parameters and corresponding clock signals collected by the two DEWE3-RM16 slave control units 2, to host computer 5. At the same time, it transmits the instructions (synchronous triggering, dynamic compensation) generated in host computer 5 to DEWE3-RM16 master control unit 1 and the two DEWE3-RM16 slave control units 2.

[0029] In this embodiment, the host computer 5 is equipped with OXYGEN software and also includes a parameter classification and configuration module, a synchronous trigger control module, a time-sharing processing algorithm module, and a fusion storage module. The output of the host computer 5 is connected to the control terminals of the DEWE3-RM16 master control unit 1 and two DEWE3-RM16 slave control units 2.

[0030] The parameter classification configuration module supports setting parameter attributes through a visual interface. Parameter attributes include rapid-change parameter attributes, gradual-change parameter attributes, and configuration file parameter export format. Rapid-change parameter attributes include rapid-change parameter sampling frequency (100Hz-1MHz) and anti-aliasing filter coefficient. Gradual-change parameter attributes include gradual-change parameter sampling frequency (0.1Hz-10Hz) and temperature compensation coefficient. The configuration file parameter export format is XML. The synchronous trigger control module includes a hardware trigger synchronous control circuit and a phase-locked loop (PLL) circuit. The input of the hardware trigger synchronous control circuit is connected to the DEWE3-RM16 master control unit 1 via a network switch 4, and the output is connected to the DEWE3-RM16 master control unit 1 and two DEWE3-RM16 slave control units 2 via a network switch 4. It is used to trigger the DEWE3-RM16 master control unit 1 to synchronously start the two DEWE3-RM16 slave control units 2 to collect slowly changing parameters and rapidly changing parameters based on the pulse signal generated by the DEWE3-RM16 master control unit 1. The input of the PLL circuit is connected to the DEWE3-RM16 master control unit 1 and two DEWE3-RM16 slave control units 2 via a network switch 4, and the output is connected to the two DEWE3-RM16 slave control units 2 via a network switch 4. It is used to monitor the clock deviation of the DEWE3-RM16 master control unit 1 and the two DEWE3-RM16 slave control units 2 in real time, and dynamically compensate for the trigger delay of the two DEWE3-RM16 slave control units 2 based on the real-time monitoring results.

[0031] In this embodiment, the DEWE3-RM16 master control unit 1 calibrates the two DEWE3-RM16 slave control units 2 through a phase-locked loop circuit, achieving clock synchronization between the DEWE3-RM16 master control unit 1 and the two DEWE3-RM16 slave control units 2. Combined with the nanosecond-level transmission delay characteristics of the PCIe bus, the time deviation of slowly changing parameters and rapidly changing parameters is controlled within 1ms, fully meeting the multi-parameter correlation analysis requirements of scenarios such as aerospace engine testing and spacecraft attitude control. For example, in turbopump testing, the instantaneous correspondence between sudden vibration frequency changes and fuel pressure fluctuations can be accurately captured, providing reliable data support for fault early warning.

[0032] The time-sharing processing algorithm module incorporates a 5th-order Butterworth filter algorithm and a moving average algorithm. The 5th-order Butterworth filter algorithm is used for high-frequency sampling and filtering of slowly varying parameters; the moving average algorithm is used for low-frequency stabilization of rapidly varying parameters; and the time-sharing processing algorithm module can avoid resource conflicts in the processing of different types of parameters.

[0033] The integrated storage module has a built-in timestamp alignment algorithm. The timestamp alignment algorithm uses the main control unit clock as a reference to interpolate and match the slowly changing parameters to the time axis of the rapidly changing parameters, forming and saving the slowly changing parameters and rapidly changing parameters with a unified timestamp. The timestamp accuracy is 1ms. Data storage supports DAT format, and the file has built-in parameter attribute tags (such as acquisition time, parameter name, sensor number, acquisition frequency) to facilitate subsequent retrieval and analysis.

[0034] The fusion storage module, with its built-in timestamp alignment algorithm, can synthesize collected data into a unified format file in real time without manual intervention. Compared to existing technologies, the processing time for 10 hours of experimental data is reduced from 4-6 hours to less than 1.5 hours, eliminating human error. Data files can be directly imported into commonly used analysis software like Origin, avoiding format conversion and significantly improving post-experiment processing efficiency.

[0035] This embodiment also provides an integrated acquisition method for slowly varying parameters and rapidly varying parameters, including the following steps: Step 1: Connect the signal acquisition interface of DEWE3-RM16 main control unit 1 to the slowly changing parameter sensor in the rocket engine test scenario, and connect the signal acquisition interfaces of the two DEWE3-RM16 slave control units 2 to the rapidly changing parameter sensor in the rocket engine test scenario respectively. Step 2: Start the OXYGEN software via the host computer 5 to automatically detect the hardware connection status and clock synchronization accuracy. If the deviation is >1ms, the internal calibration program of the OXYGEN software will be triggered. Step 3: Set parameter attributes for the DEWE3-RM16 master control unit 1 and the two DEWE3-RM16 slave control units 2 via the host computer 5. The parameter attributes include rapid change parameter attributes, gradual change parameter attributes, and configuration file parameter export format. The rapid change parameter attributes include the rapid change parameter sampling frequency (100Hz-1MHz) and anti-aliasing filter coefficient. The gradual change parameter attributes include the gradual change parameter sampling frequency (0.1Hz-10Hz) and temperature compensation coefficient. The configuration file parameter export format is XML format.

[0036] Based on the pulse signal generated by the DEWE3-RM16 main control unit 1, the host computer 5 receives the pulse signal through the network switch 4 and generates a trigger command based on the pulse signal. The network switch 4 then triggers the DEWE3-RM16 main control unit 1 to simultaneously start the two DEWE3-RM16 slave control units 2 to collect slowly changing and rapidly changing parameters. Specifically: Step a: The hardware trigger synchronization control circuit in the host computer 5 collects pulse signals, generates trigger signals, and synchronously inputs them to the DEWE3-RM16 master control unit 1 through the network switch 4. The DEWE3-RM16 master control unit 1 outputs synchronous trigger signals to n DEWE3-RM16 slave control units 2, synchronously triggering the collection of slowly changing parameters and rapidly changing parameters. Step b: Simultaneously with step a, the phase-locked loop circuit acquires the clock signals of the DEWE3-RM16 master control unit 1 and the two DEWE3-RM16 slave control units 2, and calculates the clock deviation between the clock signals of the two DEWE3-RM16 slave control units 2 and the clock signal of the DEWE3-RM16 master control unit 1. Step c: The phase-locked loop circuit triggers the two DEWE3-RM16 slave control units 2 dynamically compensated every 10ms according to the clock deviation.

[0037] Step 4: Parallel processing of slowly changing parameters and rapidly changing parameters, as well as aligning and saving the timestamps of slowly changing parameters and rapidly changing parameters in the host computer 5; generate an integrated file and back it up to local and cloud; the system automatically generates acquisition logs (including indicators such as synchronization accuracy and data integrity).

[0038] In this embodiment, the data file directly acquired by the OXYGEN software is DEWETRON MeasurementData. By opening this type of file and selecting the export settings, the data can be exported and fused to aerospace analysis software such as MATLAB and LabVIEW with one click after pre-selecting a time period. The file includes parameter descriptions and synchronous calibration reports, which are compatible with existing data analysis tools and adapted to the spacecraft ground telemetry and control system. The data integrity can reach 99.99%, meeting the high reliability requirements of aerospace experiments.

[0039] This embodiment of the integrated acquisition system for slowly varying parameters and rapidly varying parameters can also reduce the data file size by more than 30%, reduce bandwidth usage in space-to-ground communication, and extend the endurance of on-orbit monitoring equipment.

[0040] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present invention should be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An integrated acquisition system for slowly varying parameters and rapidly varying parameters, characterized in that, The system includes a DEWE3-RM16 master control unit (1) with an internal clock and n DEWE3-RM16 slave control units (2), a power module (3), a network switch (4), and a host computer (5) equipped with OXYGEN software. The host computer (5) is connected to the network interfaces of the DEWE3-RM16 master control unit (1) and the n DEWE3-RM16 slave control units (2) through the network switch (4). The output of the power module (3) is connected to the power supply terminals of the DEWE3-RM16 master control unit (1) and the n DEWE3-RM16 slave control units (2), respectively; n≥1. The DEWE3-RM16 master control unit (1) serves as the synchronization signal host, and its signal acquisition interface is used to connect to the slowly varying parameter sensor in the rocket engine test scenario. The DEWE3-RM16 master control unit (1) and n DEWE3-RM16 slave control units (2) are connected sequentially through the SYNC / IO interface. The signal acquisition interfaces of the n DEWE3-RM16 slave control units (2) are respectively used to connect to the rapidly varying parameter sensor in the rocket engine test scenario. The host computer (5) is equipped with a parameter classification configuration module, a synchronous trigger control module, a time-sharing processing algorithm module, and a fusion storage module, which are respectively used to set parameter attributes for the DEWE3-RM16 master control unit (1) and n DEWE3-RM16 slave control units (2), synchronously trigger the acquisition of slowly changing parameters and rapidly changing parameters, perform parallel processing of slowly changing parameters and rapidly changing parameters, and align and save the timestamps of slowly changing parameters and rapidly changing parameters.

2. The integrated acquisition system for slowly varying parameters and rapidly varying parameters according to claim 1, characterized in that: The DEWE3-RM16 master control unit (1) and n DEWE3-RM16 slave control units (2) are each equipped with multiple Trion-1820 acquisition boards, and the first board is a TRON-BASE board used to receive timing signals.

3. The integrated acquisition system for slowly varying parameters and rapidly varying parameters according to claim 1, characterized in that: The parameter classification configuration module supports setting parameter attributes through a visual interface. The parameter attributes include rapidly changing parameter attributes, gradually changing parameter attributes, and configuration file parameter export format. The rapidly changing parameter attributes include the rapidly changing parameter sampling frequency and anti-aliasing filter coefficient. The gradually changing parameter attributes include the gradually changing parameter sampling frequency and temperature compensation coefficient. The configuration file parameter export format is XML format. The synchronous trigger control module includes a hardware trigger synchronous control circuit and a phase-locked loop circuit. The hardware trigger synchronous control circuit triggers the DEWE3-RM16 master control unit (1) to synchronously start n DEWE3-RM16 slave control units (2) to collect slowly changing parameters and rapidly changing parameters according to the pulse signal generated by the DEWE3-RM16 master control unit (1). The phase-locked loop circuit is used to monitor the clock deviation of the DEWE3-RM16 master control unit (1) and the n DEWE3-RM16 slave control units (2) in real time, and dynamically compensates the trigger delay of the n DEWE3-RM16 slave control units (2) according to the real-time monitoring results. The time-division processing algorithm module incorporates a 5th-order Butterworth filter algorithm and a moving average algorithm. The 5th-order Butterworth filter algorithm is used for high-frequency sampling and filtering of slowly varying parameters, while the moving average algorithm is used for low-frequency stabilization of rapidly varying parameters. The fusion storage module has a built-in timestamp alignment algorithm. The timestamp alignment algorithm uses the main control unit clock as a reference to interpolate and match the slowly changing parameters to the time axis of the rapidly changing parameters, forming slowly changing parameters and rapidly changing parameters with a unified timestamp and saving them. The accuracy of the timestamp is 1ms.

4. The integrated acquisition system for slowly varying parameters and rapidly varying parameters according to claim 1, characterized in that: The slowly varying parameter sensor includes a pressure sensor and a temperature sensor, used to collect pressure and temperature in the rocket engine test scenario; The rapidly varying parameter sensor includes a vibration sensor and a pulsating pressure sensor, used to collect vibration acceleration and pulsating pressure in rocket engine test scenarios.

5. The integrated acquisition system for slowly varying parameters and rapidly varying parameters according to claim 1, characterized in that: A 22Ω resistor is connected in series at the signal acquisition interface of the DEWE3-RM16 master control unit (1) and the n DEWE3-RM16 slave control units (2) to suppress signal reflection.

6. The integrated acquisition system for slowly varying parameters and rapidly varying parameters according to claim 1, characterized in that: A power filter circuit is connected between the power supply terminal of the DEWE3-RM16 master control unit (1) and the output terminal of the power module of the n DEWE3-RM16 slave control units (2).

7. The integrated acquisition system for slowly varying parameters and rapidly varying parameters according to claim 1, characterized in that: The DEWE3-RM16 master control unit (1) and the n DEWE3-RM16 slave control units (2) are all connected via PCIe cables through their SYNC / IO interfaces.

8. A method for integrating the acquisition of slowly varying parameters and rapidly varying parameters, characterized in that: Using the integrated acquisition system for slowly varying parameters and rapidly varying parameters as described in any one of claims 1-7, the method includes the following steps: Step 1: Connect the signal acquisition interface of the DEWE3-RM16 master control unit (1) to the slowly changing parameter sensor in the rocket engine test scenario, and connect the signal acquisition interfaces of n DEWE3-RM16 slave control units (2) to the rapidly changing parameter sensor in the rocket engine test scenario respectively. Step 2: Start the OXYGEN software through the host computer (5) to automatically detect the hardware connection status and clock synchronization accuracy. If the deviation is >1ms, the internal calibration program of the OXYGEN software will be triggered. Step 3: Set parameter attributes for DEWE3-RM16 master control unit (1) and n DEWE3-RM16 slave control units (2) through the host computer (5), and trigger DEWE3-RM16 master control unit (1) to synchronously start n DEWE3-RM16 slave control units (2) to collect slowly changing parameters and rapidly changing parameters according to the pulse signal generated by DEWE3-RM16 master control unit (1); Step 4: The host computer (5) processes the slowly changing parameters and the rapidly changing parameters in parallel, and aligns and saves the timestamps of the slowly changing parameters and the rapidly changing parameters.

9. The integrated acquisition method for slowly varying parameters and rapidly varying parameters according to claim 8, characterized in that: In step 3, the DEWE3-RM16 master control unit (1) is triggered by the pulse signal to synchronously start n DEWE3-RM16 slave control units (2) to collect the slowly changing parameters and the rapidly changing parameters. Specifically: Step a: The hardware trigger synchronization control circuit in the host computer (5) collects pulse signals, generates trigger signals, and synchronously inputs them to the DEWE3-RM16 master control unit (1) through the network switch (4). The DEWE3-RM16 master control unit (1) outputs synchronous trigger signals to n DEWE3-RM16 slave control units (2) to synchronously trigger the collection of slowly changing parameters and rapidly changing parameters. Step b: Simultaneously with step a, the phase-locked loop circuit acquires the clock signals of the DEWE3-RM16 master control unit (1) and n DEWE3-RM16 slave control units (2), and calculates the clock deviation between the clock signals of the n DEWE3-RM16 slave control units (2) and the clock signal of the DEWE3-RM16 master control unit (1). Step c: The phase-locked loop circuit dynamically compensates the trigger delay of n DEWE3-RM16 slave control units (2) according to the clock deviation.

10. The integrated acquisition method for slowly varying parameters and rapidly varying parameters according to claim 9, characterized in that: In step c, dynamic compensation is performed on n DEWE3-RM16 slave control units (2) every 10ms.

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