Emergency shutdown system and method for rocket engine test bed

Abstract

The invention relates to the technical field of spaceflight, and discloses an emergency shutdown system and method for a rocket engine test bed, and the system comprises a sensor output module which is used for receiving the input and output of a pressure sensor signal and a frequency signal, and outputting a sensor signal; the simulation module is used for loading simulation signals and simulating various signal combinations in an emergency shutdown scene; the signal switching module is used for switching a sensor signal and a simulation signal by using a two-in and one-out interface assembly; the signal acquisition and processing module adopts an FPGA (Field Programmable Gate Array) and DMA (Direct Memory Access) hardware structure, performs interpretation according to an emergency shutdown condition when receiving the starting signal, and outputs an emergency shutdown signal when the emergency shutdown condition is met; the control module is used for completing the emergency shutdown action when receiving the emergency shutdown signal, and by switching the sensor signal and the simulation signal, the requirements of different test scenes are met, the emergency shutdown condition interpretation is executed, the automatic emergency shutdown function is achieved, and the safety and the emergency shutdown debugging efficiency are improved.

Description

Technical Field

[0001] This invention relates to the field of aerospace technology, specifically to an emergency shutdown system and method for a rocket engine test bench. Background Technology

[0002] As the core power unit of spacecraft, the reliability and safety of rocket engines are of paramount importance. Rocket engine testing is a crucial step in verifying engine performance, and the emergency shutdown function is a core component of the test rig's safety assurance system. Currently, test rigs typically use a host computer to interpret data when performing emergency shutdown operations on rocket engines. This method can achieve emergency shutdown under simple operating conditions, with a maximum interpretation period of 10ms. However, this method requires modifying the emergency shutdown program code and regenerating the interpretation program before each test, consuming significant manpower for code checking, resulting in low efficiency in emergency shutdown debugging. Summary of the Invention

[0003] In view of this, the present invention provides an emergency shutdown system and method for rocket engine test benches to solve the problem that the existing technology uses a host computer for interpretation, which is only applicable to simple working conditions and has low efficiency in emergency shutdown debugging.

[0004] In a first aspect, the present invention provides an emergency shutdown system for a rocket engine test bench, the system comprising: a sensor output module, a simulation module, a signal switching module, a signal acquisition and processing module, and a control module, wherein...

[0005] The sensor output module is connected to the engine sensor and is used to receive pressure sensor signals and frequency signals as input and output, and to output sensor signals.

[0006] The simulation module is used to load simulation signals and simulate various signal combinations under emergency shutdown scenarios.

[0007] The signal switching module is connected to the sensor output module and the simulation module, and uses a two-input-one-output interface component to switch the sensor signal and the simulation signal.

[0008] The signal acquisition and processing module adopts an FPGA hardware structure and a DMA hardware structure to acquire the sensor signal or the simulation signal. When a start signal is received, it performs a judgment according to the preset emergency shutdown conditions, and outputs an emergency shutdown signal when the emergency shutdown conditions are met.

[0009] The control module is connected to the signal acquisition and processing module and is used to complete the emergency shutdown action when the emergency shutdown signal is received.

[0010] This invention outputs sensor signals through a sensor output module, performs simulation through a simulation module, and uses a signal switching module to switch between sensor signals and simulation signals to meet the needs of different test scenarios. The signal acquisition and processing module performs emergency shutdown condition judgment to realize the automatic emergency shutdown function, thereby improving the safety of rocket engine ground tests and increasing the efficiency of emergency shutdown debugging.

[0011] In an optional implementation, the system further includes a signal isolation conversion module connected to the sensor output module. The signal isolation conversion module is equipped with an isolation conversion component, which is used to convert the sensor signal into a voltage signal that matches the signal acquisition and processing module.

[0012] This invention achieves signal isolation through a signal isolation conversion module, which converts the sensor signal so that the converted voltage signal matches the signal acquisition and processing module, enabling the signal acquisition and processing module to directly identify and process the signal, thus improving compatibility.

[0013] In one optional implementation, the system further includes a remote monitoring module connected to the signal acquisition and processing module, which is used to remotely output preset emergency shutdown conditions.

[0014] This invention incorporates a remote monitoring module to transmit emergency shutdown conditions to the signal acquisition and processing module, enabling rapid interpretation.

[0015] In one optional implementation, the remote monitoring module is an industrial control computer. The remote monitoring module sends remote commands to the signal acquisition and processing module, and is also used for online monitoring of engine sensor parameters, emergency shutdown judgment conditions, and data storage.

[0016] This invention uses a remote monitoring module to monitor the engine status in real time and leverages its industrial-grade reliability and real-time data processing capabilities to remotely issue commands.

[0017] In one optional implementation, the system further includes a network communication module comprising a fiber optic ring network for real-time transmission of remote commands, monitoring data, and emergency shutdown judgment results.

[0018] This invention utilizes the fiber optic ring network structure of the network communication module to ensure uninterrupted remote commands and monitoring data transmission, guaranteeing data transmission integrity and improving anti-interference capabilities.

[0019] In one optional implementation, before the formal test, the simulation module loads simulation signals through the remote monitoring module to simulate the signal combination of emergency shutdown and perform online simulation debugging of emergency shutdown.

[0020] This invention uses a simulation module to load simulation signals before formal testing, simulating various possible signal combinations for emergency shutdown, and performing online simulation debugging for emergency shutdown to improve system reliability and increase the efficiency of emergency shutdown testing.

[0021] In one optional implementation, the control module includes a start-up unit, an emergency shutdown signal receiving unit, and a control unit. The start-up unit is used to send a start-up signal, the emergency shutdown signal receiving unit is used to receive an emergency shutdown signal, and the control unit is used to perform an emergency shutdown action according to the emergency shutdown signal.

[0022] This invention achieves emergency shutdown and completes closed-loop control through a three-layer architecture consisting of a start-up unit, an emergency shutdown signal receiving unit, and a control unit in the control module.

[0023] Secondly, the present invention provides an emergency shutdown method for a rocket engine test bench, the method comprising:

[0024] Remotely edit and issue emergency shutdown conditions;

[0025] Acquire sensor signals and simulation signals;

[0026] Switching between the sensor signal and the simulation signal;

[0027] Upon receiving a start signal, the system performs a judgment according to the preset emergency shutdown conditions;

[0028] If the emergency shutdown conditions are met, an emergency shutdown signal will be output.

[0029] This invention acquires sensor signals and simulation signals, and switches between them to meet the needs of different testing scenarios. When a start signal is received, it performs an emergency shutdown condition judgment to realize an automatic emergency shutdown function, thereby improving the safety of rocket engine ground tests and increasing the efficiency of emergency shutdown debugging.

[0030] Thirdly, the present invention provides a computer device, comprising: a memory and a processor, the memory and the processor being communicatively connected to each other, the memory storing computer instructions, and the processor executing the computer instructions to perform the emergency shutdown method for a rocket engine test bench as described in the second aspect above or any corresponding embodiment thereof.

[0031] Fourthly, the present invention provides a computer-readable storage medium storing computer instructions for causing a computer to execute the emergency shutdown method for a rocket engine test bench according to the second aspect above or any corresponding embodiment thereof.

[0032] Fifthly, the present invention provides a computer program product, including computer instructions for causing a computer to execute the emergency shutdown method for a rocket engine test bench as described in the second aspect or any corresponding embodiment thereof. Attached Figure Description

[0033] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0034] Figure 1 This is a structural block diagram of an emergency shutdown system for a rocket engine test bench according to an embodiment of the present invention;

[0035] Figure 2 This is a flowchart illustrating an emergency shutdown method for a rocket engine test bench according to an embodiment of the present invention.

[0036] Figure 3 This is a schematic diagram of the hardware structure of a computer device according to an embodiment of the present invention. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, 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.

[0038] In related technologies, the use of a host computer for interpretation is employed. When the test conditions are complex, if dual-sided safety limit interpretation is required, the interpretation requirements can only be met by increasing the interpretation cycle, resulting in poorer real-time performance and lower debugging efficiency.

[0039] To address the aforementioned issues, this invention provides an emergency shutdown system for a rocket engine test bench. This system enables rapid acquisition of engine sensor signals. Emergency shutdown conditions are transmitted from the remote monitoring module to the signal acquisition and processing module, achieving 1ms (millisecond) cycle readings. Simultaneously, the simulation module remotely loads simulation signals to simulate various signal combinations under emergency shutdown scenarios, enabling online simulation debugging of emergency shutdown, thereby improving system reliability and efficiency.

[0040] This invention provides an emergency shutdown system for a rocket engine test bench, such as... Figure 1As shown, the system includes a sensor output module, a signal isolation and conversion module, a simulation module, a signal switching module, a signal acquisition and processing module, a control module, a network communication module, and a remote monitoring module.

[0041] Specifically, the sensor output module is electrically connected to the signal isolation and conversion module, the signal isolation and conversion module is electrically connected to the signal switching module, the simulation module is electrically connected to the signal switching module, the signal switching module is electrically connected to the signal acquisition and processing module, the control module is electrically connected to the signal acquisition and processing module, the signal acquisition and processing module is electrically connected to the network communication module, and the network communication module is electrically connected to the remote monitoring module.

[0042] The sensor output module is electrically connected to the engine sensor to receive signals collected by the pressure sensor to reflect the pressure value data of the rocket engine. It is also used to receive signal input and output from the frequency sensor and output sensor signals.

[0043] The simulation module includes input and output circuits, which are used to load simulation signals through the remote monitoring module before the formal test, simulate various signal combinations under emergency shutdown scenarios, simulate various signal combinations under emergency shutdown scenarios, perform online simulation debugging of emergency shutdown, and remotely output simulation data.

[0044] The aforementioned simulation signal is designed based on various actual situations that may occur during an emergency shutdown, such as the voltage and current signals output by different sensors in an emergency shutdown state, or specific combinations of control signals. By loading this simulation signal, various situations that may occur in a real emergency shutdown scenario can be simulated.

[0045] The signal switching module is electrically connected to the sensor output module and the simulation module. It uses a two-input, one-output interface component to switch between sensor signals and simulation signals. The signal switching module has two input plugs, one connected to the simulation signal end and the other connected to the sensor end. The output end is electrically connected to the signal acquisition and processing module.

[0046] The signal switching module is a switch that allows for manual or automatic control based on a selection function. One plug connects to the simulation signal terminal to receive the analog signal generated by the simulation module, while the other plug connects to the sensor terminal to receive the actual signal during the test. Both the real signal from the sensor terminal and the analog signal from the simulation signal terminal are output to the signal acquisition and processing module.

[0047] Sensor signals are used for testing, while simulation signals are used for debugging. In formal rocket engine tests and other scenarios, sensors monitor various parameters in real time to reflect the engine's actual operating status. During the test preparation or system debugging phase, simulation signals can simulate signal combinations under various normal and abnormal operating conditions, such as signal combinations under emergency shutdown scenarios, to test whether the emergency shutdown logic is correct.

[0048] The signal acquisition and processing module employs an FPGA (Field-Programmable Gate Array) hardware structure and a DMA (Direct Memory Access) hardware structure to achieve rapid acquisition of sensor signals or simulation signals and remote reception of start signals. Upon receiving a start signal, the acquired sensor data and simulation data are analyzed according to preset emergency shutdown conditions. If the emergency shutdown conditions are met consecutively, an emergency shutdown signal is output to the control module.

[0049] The FPGA hardware structure employs a parallel processing architecture, consisting of thousands of configurable logic units and hardware multipliers. It can simultaneously run multiple independent acquisition channels, achieving microsecond-level signal processing and interpretation through parallel logic. The DMA hardware structure can operate independently of the FPGA logic, directly transferring acquired data from the FPGA's internal cache to the industrial control computer's memory in the remote monitoring module. This hardware-level data transfer frees up FPGA resources for real-time interpretation.

[0050] The control module is electrically connected to the signal acquisition and processing module. It is used to perform emergency shutdown actions upon receiving an emergency shutdown signal, such as cutting off fuel supply, stopping oxidizer supply, starting the cooling system, and shutting down auxiliary systems. These are just examples and not limitations. While rapidly executing emergency shutdown actions, the control module also provides data support for subsequent fault analysis.

[0051] Specifically, since different types of interference signals exist in the rocket engine test and measurement system, a signal isolation and conversion module is set up. The signal isolation and conversion module is equipped with isolation and conversion components to isolate the system's acquired signals from the engine test and measurement system signals, preventing interference signals from mixing into the sensor signals and avoiding mutual influence and interference.

[0052] Meanwhile, the signal isolation and conversion module converts the sensor signal, using the isolation conversion component to convert the sensor signal into a voltage signal that matches the signal acquisition and processing module, so that the signal acquisition and processing module can directly identify and process it without having to adjust the signal format again, thereby improving compatibility and achieving electrical isolation and signal adaptation conversion.

[0053] Specifically, the remote monitoring module is connected to the signal acquisition and processing module. The remote monitoring module is used to remotely output preset emergency shutdown conditions. The remote monitoring module uses an industrial control computer (ICC). Through the ICC software interface, operators can remotely preset emergency shutdown conditions. The remote monitoring module sends remote commands to the signal acquisition and processing module via Ethernet, CAN bus, etc. It is also used for online monitoring of engine sensor parameters, emergency shutdown judgment conditions, and data storage, leveraging the industrial-grade reliability and real-time data processing capabilities of the ICC to achieve remote command issuance.

[0054] Specifically, the network communication module includes a fiber optic ring network, used for real-time remote command transmission, receiving and uploading data, and emergency shutdown judgment results. The fiber optic ring network is a ring topology network architecture based on fiber optic communication technology. All network nodes are connected end-to-end via fiber optic cables to form a closed loop. This ring topology network architecture has bidirectional transmission capabilities in both clockwise and counterclockwise directions, utilizing optical signals to transmit data. It boasts advantages such as high bandwidth, low latency, and interference resistance, enabling high-speed and reliable data transmission.

[0055] The remote monitoring module can remotely configure sensor parameters, emergency shutdown conditions, and commands via software interfaces such as industrial control computers, and send the data to the network communication module for long-distance transmission. This enables remote configuration without requiring operators to be physically present at the test site. The remote monitoring module receives data from the network communication module and displays and saves the collected data and interpretation results.

[0056] By utilizing the fiber optic ring network structure of the network communication module, the remote commands and monitoring data are ensured to be uninterrupted, guaranteeing the integrity of data transmission and improving anti-interference capabilities.

[0057] Emergency shutdown conditions (including dual-side safety limit interpretation documents) are converted online and then transmitted from the remote monitoring module to the signal acquisition and processing module via the network communication module, achieving a 1ms (millisecond) cycle for interpretation. The online conversion of emergency shutdown conditions, through precise parameter configuration and extremely rapid condition interpretation, enables real-time response to abnormal engine operating conditions. Acquired data and interpretation results can be uploaded to the remote monitoring module in real time for real-time monitoring of the engine status.

[0058] After receiving the network communication module's configuration information, emergency shutdown conditions, and instructions, the signal acquisition and processing module waits for the start signal.

[0059] Specifically, the control module includes a start-up unit, an emergency shutdown signal receiving unit, and a control unit. The start-up unit is used to send a start-up signal, the emergency shutdown signal receiving unit is used to receive an emergency shutdown signal, and the control unit is used to perform an emergency shutdown action based on the emergency shutdown signal and to control the engine.

[0060] The control module achieves closed-loop control from signal triggering to action execution through the coordinated work of the start-up unit, emergency shutdown signal receiving unit, and control unit.

[0061] The emergency shutdown system for rocket engine test bench provided in this embodiment outputs sensor signals through a sensor output module, performs simulation through a simulation module, and uses a signal switching module to switch between sensor signals and simulation signals to meet the needs of different test scenarios. The signal acquisition and processing module performs emergency shutdown condition judgment to realize the automatic emergency shutdown function, improve the safety of rocket engine ground tests, and improve the efficiency of emergency shutdown debugging.

[0062] The emergency shutdown monitoring procedure using the emergency shutdown system on the aforementioned rocket engine test rig is as follows:

[0063] S1: The sensor output module transmits voltage and frequency signals to the signal isolation and conversion module, which receives and isolates and converts the voltage and frequency signals.

[0064] S2: The signal switching module selects the signal output from the signal isolation conversion module or the signal output from the simulation module. At this time, the signal acquisition and processing module receives the sensor signal or the simulation signal.

[0065] S3: The remote monitoring module can remotely configure sensor parameters, emergency shutdown conditions and commands, and send them to the network communication module for long-distance transmission.

[0066] S4: After receiving the network communication module configuration information, emergency shutdown conditions and instructions, the signal acquisition and processing module waits for the control module to start. When the start signal is received, the acquisition and processing module will judge according to the acquisition time or data according to the set emergency shutdown conditions. When the emergency shutdown conditions are met, it will send an emergency shutdown signal to the control module. After receiving the emergency shutdown signal, the control module will execute the emergency shutdown action.

[0067] S5: The signal acquisition and processing module transmits real-time data to the network communication module, which then receives and transmits the data over long distances.

[0068] S6: The remote monitoring module receives data from the network communication module and displays and saves the collected and interpreted data.

[0069] The beneficial effects of the above technical solution include:

[0070] (1) By setting up a sensor output module, a signal isolation and conversion module, a signal acquisition and processing module, a control module, a network communication module and a remote monitoring module, the emergency shutdown judgment cycle can be reduced to 1 millisecond, thereby improving the performance of the emergency shutdown system.

[0071] (2) Emergency shutdown conditions are directly downloaded to the system as parameter files, without the need for program compilation and other operations, which improves the reliability of the emergency shutdown system;

[0072] (3) By setting up the signal switching module and simulation module, emergency shutdown tests can be performed remotely, which can effectively improve the work efficiency of test personnel;

[0073] (4) It can monitor the emergency shutdown parameters of rocket engine sensor signals according to the mission requirements, realize the automatic emergency shutdown function, improve the safety of rocket engine ground test, and at the same time, it can perform remote simulation debugging through simulation to improve the efficiency of emergency shutdown debugging.

[0074] The present invention also provides an embodiment of an emergency shutdown method for a rocket engine test bench. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases the steps shown or described may be executed in a different order than that shown here.

[0075] This embodiment provides an emergency shutdown method for a rocket engine test bench, which can be used on a mobile terminal. Figure 2 This is a flowchart of an emergency shutdown method for a rocket engine test bench according to an embodiment of the present invention, such as... Figure 2 As shown, the process includes the following steps:

[0076] Step S201: Remotely edit and issue emergency shutdown conditions.

[0077] In this embodiment of the invention, the emergency shutdown conditions are first edited remotely via the network, and then the remotely edited emergency shutdown conditions are sent out.

[0078] Step S202: Acquire sensor signals and simulation signals.

[0079] In this embodiment of the invention, the sensor output module transmits voltage and frequency signals to acquire sensor signals. Before the formal test, the simulation module remotely monitors and loads simulation signals to simulate various possible combinations of emergency shutdown signals, performs online simulation debugging of emergency shutdown, outputs simulation signals, and acquires simulation signals. The sensor signals and simulation signals are transmitted independently and do not interfere with each other.

[0080] Step S203: Switch between sensor signal and simulation signal.

[0081] In this embodiment of the invention, the two-input-one-output interface component of the signal switching module switches between the sensor signal and the simulation signal. The sensor signal is a real signal, and the simulation signal is a virtual signal output by the simulation module. The sensor signal is used for testing, and the simulation signal is used for debugging.

[0082] Step S204: Upon receiving the start signal, perform a judgment according to the preset emergency shutdown conditions.

[0083] In this embodiment of the invention, after receiving the configuration information, emergency shutdown conditions, and instructions from the network communication module, the signal acquisition and processing module waits for a start signal. The emergency shutdown conditions, after online conversion, are sent from the remote monitoring module to the signal acquisition and processing module via network communication. Upon receiving the start signal, the signal acquisition and processing module makes a judgment based on the acquisition time or data, according to the pre-set emergency shutdown conditions.

[0084] Step S205: If the emergency shutdown conditions are met, an emergency shutdown signal is output.

[0085] In this embodiment of the invention, it is determined whether the emergency shutdown conditions are met, and an emergency shutdown signal is sent to the control module. After receiving the emergency shutdown signal, the control system performs the emergency shutdown action.

[0086] The emergency shutdown method for rocket engine test benches provided in this embodiment acquires sensor signals and simulation signals, and switches between the sensor signals and simulation signals to meet the needs of different test scenarios. When a start signal is received, an emergency shutdown condition is determined to realize the automatic emergency shutdown function, thereby improving the safety of rocket engine ground tests and improving the efficiency of emergency shutdown debugging.

[0087] This invention also provides a computer device; please refer to [link / reference]. Figure 3 , Figure 3 This is a schematic diagram of the structure of a computer device provided in an optional embodiment of the present invention, such as... Figure 3As shown, the computer device includes one or more processors 10, memory 20, and interfaces for connecting the components, including high-speed interfaces and low-speed interfaces. The components communicate with each other via different buses and can be mounted on a common motherboard or otherwise installed as needed. The processors can process instructions executed within the computer device, including instructions stored in or on memory to display graphical information of a GUI on external input / output devices (such as display devices coupled to the interfaces). In some alternative implementations, multiple processors and / or multiple buses can be used with multiple memories and multiple memory modules, if desired. Similarly, multiple computer devices can be connected, each providing some of the necessary operations (e.g., as a server array, a group of blade servers, or a multiprocessor system). Figure 3 Take a processor 10 as an example.

[0088] Processor 10 may be a central processing unit, a network processor, or a combination thereof. Processor 10 may further include a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or a combination thereof. The programmable logic device may be a complex programmable logic device (CAMP), a field-programmable gate array (FPGA), a general-purpose array logic (GDA), or any combination thereof.

[0089] The memory 20 stores instructions executable by at least one processor 10 to cause at least one processor 10 to perform the method shown in the above embodiments.

[0090] The memory 20 may include a program storage area and a data storage area. The program storage area may store the operating system and applications required for at least one function; the data storage area may store data created based on the use of the computer device. Furthermore, the memory 20 may include high-speed random access memory and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid-state storage device. In some alternative embodiments, the memory 20 may optionally include memory remotely located relative to the processor 10, and these remote memories may be connected to the computer device via a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

[0091] The memory 20 may include volatile memory, such as random access memory; the memory may also include non-volatile memory, such as flash memory, hard disk or solid-state drive; the memory 20 may also include a combination of the above types of memory.

[0092] The computer device also includes an input device 30 and an output device 40. The processor 10, memory 20, input device 30, and output device 40 can be connected via a bus or other means. Figure 3 Taking the example of a connection between China and Israel via a bus.

[0093] Input device 30 can receive input numerical or character information, and generate key signal inputs related to user settings and function control of the computer device, such as a touch screen. Output device 40 may include a display device, etc.

[0094] This invention also provides a computer-readable storage medium. The methods described above according to embodiments of the invention can be implemented in hardware or firmware, or implemented as computer code that can be recorded on a storage medium, or implemented as computer code downloaded via a network and originally stored on a remote storage medium or a non-transitory machine-readable storage medium and then stored on a local storage medium. Thus, the methods described herein can be processed by software stored on a storage medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. The storage medium can be a magnetic disk, optical disk, read-only memory, random access memory, flash memory, hard disk, or solid-state drive, etc.; further, the storage medium can also include combinations of the above types of memory. It is understood that computers, processors, microprocessor controllers, or programmable hardware include storage components capable of storing or receiving software or computer code, which, when accessed and executed by the computer, processor, or hardware, implements the methods shown in the above embodiments.

[0095] A portion of this invention can be applied as a computer program product, such as computer program instructions, which, when executed by a computer, can invoke or provide the methods and / or technical solutions according to the invention through the operation of the computer. Those skilled in the art will understand that the forms in which computer program instructions exist in a computer-readable medium include, but are not limited to, source files, executable files, installation package files, etc. Correspondingly, the ways in which computer program instructions are executed by a computer include, but are not limited to: the computer directly executing the instructions, or the computer compiling the instructions and then executing the corresponding compiled program, or the computer reading and executing the instructions, or the computer reading and installing the instructions and then executing the corresponding installed program. Here, the computer-readable medium can be any available computer-readable storage medium or communication medium accessible to a computer.

[0096] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope of this application.

Claims

1. An emergency shutdown system for a rocket engine test rig, characterized in that, The system includes: a sensor output module, a simulation module, a signal switching module, a signal acquisition and processing module, and a control module, wherein... The sensor output module is connected to the engine sensor and is used to receive pressure sensor signals and frequency signals as input and output, and to output sensor signals. The simulation module is used to load simulation signals and simulate various signal combinations under emergency shutdown scenarios. The signal switching module is connected to the sensor output module and the simulation module, and uses a two-input-one-output interface component to switch the sensor signal and the simulation signal. The signal acquisition and processing module adopts an FPGA hardware structure and a DMA hardware structure to acquire the sensor signal or the simulation signal. When a start signal is received, it performs a judgment according to the preset emergency shutdown conditions, and outputs an emergency shutdown signal when the emergency shutdown conditions are met. The control module is connected to the signal acquisition and processing module and is used to complete the emergency shutdown action when the emergency shutdown signal is received.

2. The system according to claim 1, characterized in that, The system also includes a signal isolation and conversion module, which is connected to the sensor output module. The signal isolation and conversion module is equipped with an isolation and conversion component, which is used to convert the sensor signal into a voltage signal that matches the signal acquisition and processing module.

3. The system according to claim 1, characterized in that, The system also includes a remote monitoring module, which is connected to the signal acquisition and processing module and is used to remotely output preset emergency shutdown conditions.

4. The system according to claim 3, characterized in that, The remote monitoring module uses an industrial control computer. It sends remote commands to the signal acquisition and processing module, and is also used for online monitoring of engine sensor parameters, emergency shutdown judgment conditions, and data storage.

5. The system according to claim 4, characterized in that, The system also includes a network communication module, which comprises a fiber optic ring network for real-time transmission of remote commands, monitoring data, and emergency shutdown judgment results.

6. The system according to claim 3, characterized in that, Before the formal test, the simulation module loads simulation signals through the remote monitoring module to simulate the signal combination of emergency shutdown and perform online simulation debugging of emergency shutdown.

7. The system according to claim 3, characterized in that, The control module includes a start-up unit, an emergency shutdown signal receiving unit, and a control unit. The start-up unit is used to send a start-up signal, the emergency shutdown signal receiving unit is used to receive an emergency shutdown signal, and the control unit is used to perform an emergency shutdown action based on the emergency shutdown signal.

8. An emergency shutdown method for a rocket engine test bench, characterized in that, The method includes: Remotely edit and issue emergency shutdown conditions; Acquire sensor signals and simulation signals; Switching between the sensor signal and the simulation signal; Upon receiving a start signal, the system performs a judgment according to the preset emergency shutdown conditions; If the emergency shutdown conditions are met, an emergency shutdown signal will be output.

9. A computer device, characterized in that, include: The system includes a memory and a processor, which are interconnected. The memory stores computer instructions, and the processor executes these computer instructions to perform the emergency shutdown method for a rocket engine test bench as described in claim 8.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions for causing the computer to execute the emergency shutdown method for the rocket engine test bench as described in claim 8.

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