Hot backup measurement and control system

Abstract

The invention provides a hot backup measurement and control system. The hot backup measurement and control system comprises a test assembly, a signal switching circuit, a first PXI device and a second PXI device. The test assembly is used for performing a fluid combustion test; the signal switching circuit is electrically connected with the test assembly. The first PXI equipment is electrically connected with the signal switching circuit, and the first PXI equipment is used for controlling the test assembly to carry out a fluid combustion test through the signal switching circuit and obtaining test data from the test assembly; the second PXI equipment is electrically connected with the signal switching circuit and the first PXI equipment, and the second PXI equipment has a backup mode and a control mode; the first PXI equipment works and can send a first signal to the second PXI equipment, and the second PXI equipment runs in a backup mode under the condition that the second PXI equipment receives the first signal; and under the condition that the second PXI equipment does not receive the first signal within the preset duration, the second PXI equipment is switched to a control mode, and the test assembly is controlled by the signal switching circuit to carry out a fluid combustion test.

Description

Technical Field

[0001] The present invention belongs to the technical field of test equipment, and particularly relates to a hot standby measurement and control system. Background Art

[0002] For hot vehicle tests with high costs such as large-flow fluids and combustion, if a conventional technical route is used to construct a test system, once software and hardware abnormalities occur in the measurement and control system during the test process, it may lead to serious consequences such as missing test data, drifting of test control parameters, and inaccurate control timing. Therefore, there is an urgent need for a measurement and control technology that can not only meet the requirements of control and test functions but also have extremely high reliability. Summary of the Invention

[0003] An embodiment of the present invention provides a hot standby measurement and control system.

[0004] A hot standby measurement and control system includes a test component, a signal transfer circuit, a first PXI device, and a second PXI device. The test component is used to conduct a fluid combustion test; the signal transfer circuit is electrically connected to the test component; the first PXI device is electrically connected to the signal transfer circuit, and the first PXI device is used to control the test component to perform fluid combustion work through the signal transfer circuit and obtain test data from the test component; the second PXI device is respectively electrically connected to the signal transfer circuit and the first PXI device, and the second PXI device has a backup mode and a control mode; when the first PXI device is operating, it can send a first signal to the second PXI device. Among them, when the second PXI device receives the first signal, the second PXI device operates in the backup mode; when the second PXI device does not receive the first signal within a preset time period, the second PXI device switches to the control mode, controls the test component to conduct a fluid combustion test through the signal transfer circuit, and obtains test data from the test component.

[0005] The beneficial effects brought by the present invention are as follows:

[0006] As can be seen from the above solution, an embodiment of the present invention provides a hot standby measurement and control system, which can realize that when it is detected that the device playing the main control role is abnormal, the device playing the slave control role automatically takes over the system control right, and the device playing the slave control role completes the system measurement and control operation.

[0007] The hot standby measurement and control system includes a test component, which is specifically used for a fluid combustion test. The test component can be placed in a test room and is used to simulate and detect the combustion process.

[0008] As the communication part between the test component and the device realizing the measurement and control function, the signal transfer circuit is responsible for transmitting control signals and test data to ensure the integrity and accuracy of the signals during the transmission process.

[0009] The first PXI device is the main measurement and control device of the hot standby measurement and control system. It is responsible for controlling the test assembly to perform fluid combustion work through the signal transfer circuit and obtaining test data in real time. The second PXI device is used as a slave control device. As a backup of the first PXI device, it has the same hardware configuration and measurement and control software as the first PXI device. The second PXI device can automatically take over the control right when the master control device is abnormal, ensuring the continuity and safety of the test.

[0010] Specifically, when the first PXI device is working, it can send a first signal to the second PXI device. Among them, when the second PXI device receives the first signal, the second PXI device operates in the backup mode; when the second PXI device does not receive the first signal within a preset time period, the second PXI device switches to the control mode, controls the test assembly to perform a fluid combustion test through the signal transfer circuit, and obtains test data from the test assembly. It can be seen that during normal operation, the first PXI device sends control instructions to the test assembly through the signal transfer circuit and receives test data from the test assembly. At the same time, the first PXI device will regularly send a normal operation signal, that is, the first signal, to the second PXI device, indicating that it is working normally. When the second PXI device receives the normal operation signal from the first PXI device, the second PXI device will remain in the backup mode, not participate in the measurement and control operation, but continuously monitor the status of the first PXI device.

[0011] If the first PXI device fails and cannot continue to send the first signal, when the second PXI device does not receive this signal within the preset time period, it will automatically switch to the control mode. At this time, the second PXI device will take over the control right of the hot standby measurement and control system, directly control the test assembly to perform a fluid combustion test through the signal transfer circuit, and obtain test data. In fluid combustion tests, software and hardware failures may lead to serious consequences, such as equipment damage, test failure, and even safety accidents. Through the introduction of a hot standby mechanism and the cooperation of the signal transfer circuit, the hot standby measurement and control system of the present invention can quickly switch to the second PXI device, that is, the slave control device, when the first PXI device, that is, the master control device, fails, ensuring the continuity of the test and the integrity of the data. The hot standby measurement and control system effectively reduces the work risk by automatically taking over the control right. Since the master control device and the slave control device have the same hardware configuration and measurement and control software, the maintenance and upgrade work is more convenient.

[0012] In summary, the hot standby measurement and control system proposed by the present invention significantly improves the reliability and safety of fluid combustion measurement and control systems by introducing two devices with exactly the same hardware configuration as measurement and control devices and adopting an automatic switching mechanism. Description of the Drawings

[0013] Figure 1Schematic diagram of a hot standby measurement and control system according to an embodiment of the present invention;

[0014] Figure 2 Schematic diagram of the hot standby bus of a hot standby measurement and control system according to an embodiment of the present invention;

[0015] Figure 3 Schematic diagram of the implementation structure of the hot standby bus of a hot standby measurement and control system according to an embodiment of the present invention.

[0016] Figures 1 to 3 In the figure, 100 is a hot standby measurement and control system, 110 is a test component, 112 is a motor, 114 is a pump, 116 is a solenoid valve, 118 is a sensor, 120 is a changeover switch, 130 is a signal transfer circuit, 132 is a signal isolation module, 134 is an output changeover module, 140 is a first PXI device, 144 is a first power supply, 145 is a first console, 148 is a first switch, 150 is a first measurement and control station, 152 is a first display, 154 is a second display, 156 is a third power supply, 158 is a second PXI device, 162 is a second power supply, 163 is a second console, 164 is a second switch, 166 is a second measurement and control station, 168 is a third display, 170 is a fourth display, 172 is a fourth power supply, 180 is an operation panel, 182 is a third switch, 184 is a printer, 186 is a first chassis, 188 is a first acquisition card, 190 is a first signal transfer board, 192 is a second chassis, 194 is a second acquisition card, 196 is a second signal transfer board. Detailed implementation manners

[0017] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0018] Next, refer to Figures 1 to 3 Describe the hot standby measurement and control system 100 in some embodiments of the present invention.

[0019] As Figure 1 、 Figure 2 And Figure 3As shown, in an embodiment of the present invention, a hot standby measurement and control system 100 is proposed, which includes a test component 110, a signal transfer circuit 130, a first PXI device 140, and a second PXI device 158. The test component 110 is used to conduct a fluid combustion test; the signal transfer circuit 130 is electrically connected to the test component 110; the first PXI device 140 is electrically connected to the signal transfer circuit 130, and the first PXI device 140 is used to control the test component 110 to conduct a fluid combustion test through the signal transfer circuit 130 and obtain test data from the test component 110; the second PXI device 158 is electrically connected to the signal transfer circuit 130 and the first PXI device 140 respectively, and the second PXI device 158 has a backup mode and a control mode; when the first PXI device 140 is working, it can send a first signal to the second PXI device 158. Among them, when the second PXI device 158 receives the first signal, the second PXI device 158 operates in the backup mode; when the second PXI device 158 does not receive the first signal within a preset time period, the second PXI device 158 switches to the control mode, controls the test component 110 to conduct a fluid combustion test through the signal transfer circuit 130, and obtains test data from the test component 110.

[0020] In this embodiment, the hot standby measurement and control system 100 provided by the embodiment of the present invention can realize that when it is detected that the device with the main control function is abnormal, the device with the slave control function automatically takes over the system control right, and the device with the slave control function completes the system measurement and control operation.

[0021] The hot standby measurement and control system 100 includes a test component 110, and the test component 110 is specifically used for fluid combustion tests. The test component 110 can be placed in a test room and is used to simulate and detect the combustion process.

[0022] Specifically, the test component 110 includes a motor 112, a pump 114, a solenoid valve 116, and a sensor 118.

[0023] The motor 112 is used to drive the pump 114 to transport fuel from a storage container to a combustion chamber. The solenoid valve 116 is used to precisely control the flow of fluid, such as opening or closing the supply of fuel and oxidant. The sensor 118 is used to monitor and measure various parameters during the test process, such as temperature, pressure, flow rate, etc. The sensor is provided with a changeover switch 120.

[0024] The signal transfer circuit 130, as the communication part between the test component 110 and the device that realizes the measurement and control function, is responsible for transmitting control signals and test data to ensure the integrity and accuracy of the signals during transmission.

[0025] The first PXI device 140 is the main measurement and control device of the hot standby measurement and control system 100, responsible for controlling the test component 110 to perform fluid combustion work through the signal transfer circuit 130 and obtaining test data in real time. The second PXI device 158 is used as a slave control device. As a backup of the first PXI device 140, it has the same hardware configuration and measurement and control software as the first PXI device 140. The second PXI device 158 can automatically take over the control right when the main control device is abnormal, ensuring the continuity and safety of the test.

[0026] Specifically, when the first PXI device 140 is working, it can send a first signal to the second PXI device 158. Among them, when the second PXI device 158 receives the first signal, the second PXI device 158 operates in the backup mode; when the second PXI device 158 does not receive the first signal within a preset time period, the second PXI device 158 switches to the control mode, controls the test component 110 to perform a fluid combustion test through the signal transfer circuit 130, and obtains test data from the test component 110.

[0027] In a fluid combustion test, software and hardware failures may lead to serious consequences, such as equipment damage, test failure, and even safety accidents. By introducing a hot standby mechanism and cooperating with the signal transfer circuit 130, the hot standby measurement and control system 100 can quickly switch to the second PXI device 158, that is, the slave control device, when the first PXI device 140, that is, the main control device, fails, ensuring the continuity of the test and the integrity of the data. The hot standby measurement and control system 100 effectively reduces the working risk by automatically taking over the control right. Since the main control device and the slave control device have the same hardware configuration and measurement and control software, the maintenance and upgrade work are more convenient.

[0028] Specifically, the first signal is a heartbeat signal. A heartbeat signal refers to a communication signal sent between the master and slave devices at a certain time interval, and the heartbeat signal is used to indicate the current operating state of their respective systems. By sending and receiving the heartbeat signal, the second PXI device 158 can understand the operating state of the first PXI device 140 in real time. The heartbeat signal can monitor the operating state of the first PXI device 140 in real time. When the first PXI device 140 is operating normally, it will regularly send a heartbeat signal to the second PXI device 158, and the second PXI device 158 will determine whether the first PXI device 140 is in a healthy state by receiving these signals.

[0029] When the first PXI device 140 fails or malfunctions, it will no longer be able to send heartbeat signals. At this time, when the second PXI device 158 does not receive a heartbeat signal within a preset duration, it will automatically determine that the first PXI device 140 has failed and switch to the control mode to take over the system control right. Through the real-time monitoring of the heartbeat signal and the fault switching mechanism, it can be ensured that the system can quickly switch to the second PXI device 158 when the first PXI device 140 fails, thereby improving the overall reliability of the system.

[0030] Specifically, the first PXI device 140 is a PCI Extensions for Instrumentation device. The first PXI device 140 is responsible for processing various measurement and control tasks, including data acquisition, signal processing, control output, etc.

[0031] Specifically, the second PXI device 158 is a PCI Extensions for Instrumentation device. The second PXI device 158 is responsible for processing various measurement and control tasks, including data acquisition, signal processing, control output, etc.

[0032] Specifically, when the hot backup starts automatically, it is because the first PXI device 140 has problems, such as crashing, communication failures, etc., and it may already be in an out-of-control state. Therefore, the first PXI device 140 will not be processed. At this time, the control signal conversion circuit of the second PXI device 158 disconnects the control signal output by the first PXI device 140 from the field device, and the control signal of the second PXI device 158 is connected to the field device through the signal transfer circuit 130, thereby realizing the takeover of the field device.

[0033] Such as Figure 1 、 Figure 2 and Figure 3 As shown in, in some embodiments of the present invention, optionally, the first PXI device 140 includes: a first chassis 186, a first acquisition card 188, and a first signal transfer board 190. The first chassis 186 is electrically connected to the signal transfer circuit 130, and the first acquisition card 188 is electrically connected to the first signal transfer board 190; the second PXI device 158 includes: a second chassis 192, a second acquisition card 194, and a second signal transfer board 196. The second chassis 192 is electrically connected to the signal transfer circuit 130, and the second acquisition card 194 is electrically connected to the second signal transfer board 196; the second chassis 192 is electrically connected to the first chassis, and the second signal transfer board 196 is electrically connected to the first signal transfer board 190.

[0034] In this embodiment, the present invention realizes hot standby between the first PXI device and the second PXI device by building a hot standby bus. The first PXI device includes a first chassis 186, a first acquisition card 188, and a first signal transfer board 190. Among them, the first chassis 186 is electrically connected to the signal transfer circuit 130, thereby realizing control and information acquisition.

[0035] The first acquisition card 188 is electrically connected to the first signal transfer board 190. The first acquisition card 188 serves as a hot standby control card, and the first signal transfer board 190 realizes signal transmission.

[0036] The second PXI device 158 includes a second chassis 192, a second acquisition card 194, and a second signal transfer board 196. The second chassis 192 is electrically connected to the signal transfer circuit 130, and the second acquisition card 194 is electrically connected to the second signal transfer board 196. The second chassis 192 is electrically connected to the signal transfer circuit 130, thereby realizing control and information acquisition. The second acquisition card 194 serves as a hot standby control card, and the second signal transfer board 196 realizes signal transmission.

[0037] The second chassis 192 is electrically connected to the first chassis 186, and the second signal transfer board 196 is electrically connected to the first signal transfer board 190. The second chassis 192, the first chassis 186, the second signal transfer board 196, and the first signal transfer board 190 build a signal transmission route, and cooperate with the first acquisition card 188 and the second acquisition card 194 to realize the construction of the hot standby bus.

[0038] In the related art, the PXI system does not support the hot standby operation mechanism. The present invention realizes the automatic interaction of the master and slave control states based on the hot standby bus, thereby realizing the automatic hot standby switching between the first PXI device 140 and the second PXI device 158.

[0039] Specifically, both the first chassis 186 and the second chassis 192 are PXIe 8840 chassis.

[0040] Specifically, both the first acquisition card 1988 and the second acquisition card 194 are PXIe 6345 multifunctional acquisition cards.

[0041] Specifically, both the first signal transfer board 190 and the second signal transfer board 196 are 68-core signal transfer boards.

[0042] The present invention uses two PXI devices with exactly the same hardware configuration as measurement and control devices, one as the master PXI and the other as the slave PXI. When the system runs, the master PXI and the slave PXI run simultaneously, and by default, the master PXI performs measurement and control operations. When it is detected that the master PXI is abnormal, the slave PXI automatically takes over the system control right, and the system automatically bypasses the master PXI and the slave PXI completes the system measurement and control operations. The present invention uses a PXIe 8840 chassis and connects the clock output of the master chassis to the clock input of the slave chassis. The hot standby control card is implemented based on a PXIe 6345 multifunctional acquisition card, and the hot standby status interaction is carried out through its bidirectional I / O. Specifically, the physical layer communication design of the hot standby bus, the communication protocol design, and the internal program's parsing and judgment logic for the protocol are all self-designed and constructed based on the above chassis and multifunctional acquisition card.

[0043] As Figure 1 、 Figure 2 and Figure 3 shown, in some embodiments of the present invention, optionally, the first PXI device 140 sends a first signal to the second signal transfer board 196 through the first signal transfer board 190, so that the second PXI device 158 receives the first signal.

[0044] In this embodiment, the present invention builds a hot standby bus through the first signal transfer board 190 and the second signal transfer board 196 to realize signal transmission. The first PXI device 140 sends a first signal to the second signal transfer board 196 through the first signal transfer board 190, so that the second PXI device 158 receives the first signal. The second PXI device 158 can understand the operating status of the first PXI device 140 in real time.

[0045] As Figure 1 、 Figure 2 and Figure 3 shown, in some embodiments of the present invention, optionally, the first PXI device 140 can also send a clock signal to the second PXI device 158, and the second PXI device 158 receives the clock signal to be clock-synchronized with the first PXI device 140.

[0046] In this embodiment, the first PXI device 140 can not only send a heartbeat signal to the second PXI device 158, but also send a clock signal to ensure clock synchronization between the two. Through clock synchronization, the error caused by the time difference between devices can be eliminated, thereby improving the accuracy and reliability of the entire system.

[0047] Specifically, the clock of the first PXI device 140 is output to the second PXI device 158, and the clock of the second PXI device 158 realizes phase-locking to the clock of the first PXI device 140, synchronizing the clocks of the two sets of devices together.

[0048] Specifically, the first PXI device sends a clock signal to the second chassis 192 of the second PXI device 158 through the first chassis 186. The second PXI device 158 receives the clock signal to be clock-synchronized with the first PXI device 140.

[0049] As Figure 1 、 Figure 2 and Figure 3 shown, in some embodiments of the present invention, optionally, after the first PXI device 140 enters the ready state, the first PXI device 140 can also send a master ready signal to the second PXI device 158 to initialize the second PXI device 158 and switch it to the backup mode.

[0050] In this embodiment, after the first PXI device 140 enters the ready state, it sends a master ready signal to the second PXI device 158. The function of this signal is to let the second PXI device 158 know that the first PXI device 140 is ready and has successfully taken over the control of the system and become the current master device. At the same time, this signal also prompts the second PXI device 158 to be initialized and switched to the backup mode to prepare for possible failover.

[0051] Specifically, after the first PXI device 140 starts and enters the ready state, it sends a master ready signal to the second PXI device 158, and the two sides shake hands and are initialized.

[0052] As Figure 1 、 Figure 2 and Figure 3 shown, in some embodiments of the present invention, optionally, the first PXI device 140 can also send a timing start signal to the second PXI device 158 to trigger the second PXI device 158 to synchronously execute the start timing operation.

[0053] In this embodiment, the first PXI device 140 not only has the ability to send a heartbeat signal, a clock signal and a master ready signal to the second PXI device 158, but also can send a timing start signal. The timing start signal is used to ensure that the first PXI device 140 and the second PXI device 158 can be synchronized during the startup process. When the first PXI device 140 sends a timing start signal, the second PXI device 158 will receive the signal and immediately start to execute its start timing operation, so as to ensure that the two devices can complete the startup at the same time point or a similar time point. In addition to synchronous startup, the timing start signal also helps to ensure that the two devices remain coordinated during subsequent operation. By precisely controlling the startup timing, it is possible to avoid operation conflicts or errors caused by time differences between devices.

[0054] Specifically, when the first PXI device 140 receives an automatic timing instruction and is ready to start execution, it sends a signal to the second PXI device 158 to synchronously trigger the slave to start executing the timing.

[0055] As Figure 1 , Figure 2 and Figure 3 shown, in some embodiments of the present invention, optionally, the first PXI device 140 is further capable of sending a timing stop signal to the second PXI device 158 to trigger the second PXI device 158 to synchronously execute a stop timing operation.

[0056] In this embodiment, the first PXI device 140 is further capable of sending a timing stop signal. The timing stop signal is used to ensure that the first PXI device 140 and the second PXI device 158 can remain synchronized during the stop process. When the first PXI device 140 sends a timing stop signal, the second PXI device 158 will receive this signal and immediately start executing its stop timing operation, thereby ensuring that the two devices can complete the stop at the same time point or a nearby time point.

[0057] Specifically, after the timing is artificially aborted during operation, the first PXI device 140 sends a signal to the second PXI device 158 to synchronously trigger the second PXI device 158 to stop executing the timing.

[0058] As Figure 1 , Figure 2 and Figure 3 shown, in some embodiments of the present invention, optionally, after the second PXI device 158 switches to the slave mode and enters the ready state, it sends a slave ready signal to the first PXI device 140 to cause the first PXI device 140 to switch to the bypass mode and stop working.

[0059] In this embodiment, after the second PXI device 158 switches to the slave mode and enters the ready state, it will send a slave ready signal to the first PXI device 140. The function of this signal is to notify the first PXI device 140 that the second PXI device 158 is ready to be a slave device and has been in a state where it can take over the system control right. At the same time, it causes the first PXI device 140 to switch to the bypass mode and stop working, realizing seamless switching between devices.

[0060] Specifically, after the slave is ready and the slave starts, after entering the ready state, it sends a ready signal to the host, and the two sides shake hands and perform initialization.

[0061] Specifically, as Figure 2 shown, the main interaction information of the bus includes:

[0062] (1) Clock signal: The clock of the first PXI device 140 is output to the second PXI device 158. The clock of the second PXI device 158 locks the phase of the clock of the first PXI device 140, synchronizing the clocks of the first PXI device 140 and the second PXI device 158 together.

[0063] (2) Heartbeat signal: The first PXI device 140 periodically sends a heartbeat signal to the second PXI device 158. After the first PXI device 140 fails, it will actively or passively stop sending the heartbeat signal. If the second PXI device 158 finds that the heartbeat signal does not arrive at the agreed time, it will determine that the first PXI device 140 has failed and start the hot standby switching program.

[0064] (3) The first PXI device 140 is ready: After the first PXI device 140 starts and enters the ready state, it sends a ready signal to the second PXI device 158, and the two sides shake hands and perform initialization.

[0065] (4) Timing start: When the first PXI device 140 receives an automatic timing instruction and is ready to start execution, it sends a signal to the second PXI device 158 to synchronously trigger the second PXI device 158 to start executing the timing.

[0066] (5) Timing stop: After the timing is manually aborted during operation, the first PXI device 140 sends a signal to the second PXI device 158 to synchronously trigger the second PXI device 158 to stop executing the timing.

[0067] (6) The second PXI device 158 is ready: After the second PXI device 158 starts and enters the ready state, it sends a ready signal to the host, and the two sides shake hands and perform initialization.

[0068] The present invention can improve the reliability of the fluid combustion measurement and control system, and solve the serious consequences that may be caused by software and hardware failures of the measurement and control system during the test.

[0069] Specifically, as Figure 3 shown, the sending and receiving of the heartbeat signal, the master control ready signal, the timing start signal, the timing stop signal and the slave control ready signal are realized through the first signal transfer board 190 and the second signal transfer board 196. The sending and receiving of the clock signal are realized through the first chassis 186 and the second chassis 192.

[0070] As Figure 1 、 Figure 2 and Figure 3As shown, in some embodiments of the present invention, optionally, the hot standby measurement and control system 100 further includes: a first power supply 144, electrically connected to the first PXI device 140, for supplying power to the first PXI device 140. A second power supply 162, electrically connected to the second PXI device 158, for supplying power to the second PXI device 158.

[0071] In this embodiment, the first power supply 144 is the power supply part of the system, realizing providing stable power supply to the first PXI device 140. Specifically, the first power supply 144 is a first uninterruptible power supply, and the supply voltage is 220V.

[0072] The second power supply 162 is the power supply part of the system, realizing providing stable power supply to the second PXI device 158. Specifically, the second power supply 162 is a first uninterruptible power supply, and the supply voltage is 220V.

[0073] As Figure 1 、 Figure 2 and Figure 3 shown, in some embodiments of the present invention, optionally, the hot standby measurement and control system 100 further includes: a first switch 146, electrically connected to the first PXI device 140, for data transmission and exchange; a first measurement and control station 150, electrically connected to the first switch 146, for processing test data and control data; a first display 152, electrically connected to the first measurement and control station 150, for data display; a second display 154, electrically connected to the first measurement and control station 150, for data display; a third power supply 156, electrically connected to the first switch 146, the first measurement and control station 150, the first display 152 and the second display 154 respectively, for power supply.

[0074] In this embodiment, the hot standby measurement and control system 100 further includes a first switch 146, a first measurement and control station 150, a first display 152, a second display 154 and a third power supply 156. The first switch 146 is respectively connected to the first PXI device 140 and the first measurement and control station 150 to realize data transmission between devices. The first measurement and control station 150 is the data processing center in the system, for receiving, processing and analyzing data from the first PXI device 140. The first display 152 and the second display 154 are data display devices in the system, and they are responsible for displaying the data processed by the first measurement and control station 150 in the form of graphs, tables or other forms. Through the displays, users can intuitively understand the operating state of the system and the test results. The third power supply 156 is the power supply device in the system, and it is responsible for providing stable power supply to components such as the first switch 146, the first measurement and control station 150, the first display 152 and the second display 154.

[0075] Specifically, the third power supply 156 includes a second uninterruptible power supply with a supply voltage of 220V.

[0076] Specifically, the first switch 146, the first measurement and control station 150, the first display 152, the second display 154, and the third power supply 156 constitute the first console 145.

[0077] As Figure 1 、 Figure 2 and Figure 3 shown, in some embodiments of the present invention, optionally, the hot standby measurement and control system 100 further includes: a second switch 164, electrically connected to the second PXI device 158 for data transmission and exchange; a second measurement and control station 166, electrically connected to the second switch 164 for processing test data and control data; a third display 168, electrically connected to the second measurement and control station 166 for data display; a fourth display 170, electrically connected to the second measurement and control station 166 for data display; a fourth power supply 172, electrically connected to the second switch 164, the second measurement and control station 166, the third display 168, and the fourth display 170 respectively for power supply.

[0078] In this embodiment, the hot standby measurement and control system further includes a second switch 164, a second measurement and control station 166, a third display 168, a fourth display 170, and a fourth power supply 172. The second switch 164 is respectively connected to the second PXI device 158 and the second measurement and control station 166 to achieve data transmission between devices. The second measurement and control station 166 is the data processing center in the system, used to receive, process, and analyze data from the second PXI device 158. The third display 168 and the fourth display 170 are data display devices in the system. Through the displays, users can intuitively understand the operating status and test results of the system. The fourth power supply 172 is the power supply device in the system, which provides stable power supply for components such as the second switch 164, the second measurement and control station 166, the third display 168, and the fourth display 170.

[0079] Specifically, the fourth power supply 172 includes a fourth uninterruptible power supply with a supply voltage of 220V.

[0080] Specifically, the second switch 164, the second measurement and control station 166, the third display 168, the fourth display 170, and the fourth power supply 172 constitute the second console 163.

[0081] As Figure 1 、 Figure 2 and Figure 3As shown, in some embodiments of the present invention, optionally, the hot standby measurement and control system 100 further includes: an operation panel 180, electrically connected to the first PXI device 140 and the second PXI device 158 respectively, for manually switching the working modes of the first PXI device 140 and the second PXI device 158.

[0082] In this embodiment, the hot standby measurement and control system 100 further includes an operation panel 180. The operation panel 180 is electrically connected to the first PXI device 140 and the second PXI device 158 respectively, for manually switching the working modes of the first PXI device 140 and the second PXI device 158 to achieve manual switching under emergency conditions.

[0083] Specifically, the hot standby measurement and control system 100 further includes a printer 184 and a third switch 182. The third switch 182 is connected to the printer 184, the first PXI device 140, and the second PXI device 158 respectively to achieve data printing processing.

[0084] As Figure 1 、 Figure 2 and Figure 3 As shown, in some embodiments of the present invention, optionally, the signal transfer circuit 130 includes: a signal isolation module 132, the input end of the signal isolation module 132 is electrically connected to the test component 110, and the output end of the signal isolation module 132 is electrically connected to the first PXI device 140 and the second PXI device 158 respectively; an output switching module 134, the input end of the output switching module 134 is electrically connected to the first PXI device 140 and the second PXI device 158 respectively, and the output end of the output switching module 134 is electrically connected to the test component 110.

[0085] In this embodiment, the signal transfer circuit 130 includes a signal isolation module 132 and an output switching module 134. The input end of the signal isolation module 132 is electrically connected to the test component 110, and the output end of the signal isolation module 132 is electrically connected to the first PXI device 140 and the second PXI device 158 respectively. The signal isolation module 132 isolates and protects the circuit to prevent signal interference and electrical crosstalk between different circuits.

[0086] The input end of the output switching module 134 is electrically connected to the first PXI device 140 and the second PXI device 158 respectively, and the output end of the output switching module 134 is electrically connected to the test component 110.

[0087] Specifically, the signal isolation module 132 includes AI isolation, AO isolation, DI isolation, and DO isolation.

[0088] Specifically, the output switching module 134 includes AO output switching and DO output switching.

[0089] The above are the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A hot backup measurement and control system (100), characterized in that: include: A test assembly (110) for conducting a fluid combustion test; A signal switching circuit (130) electrically connected to the test assembly (110); A first PXI device (140) is electrically connected to the signal switching circuit (130), and the first PXI device (140) is used to control the test component (110) to perform the fluid combustion test through the signal switching circuit (130), and to obtain test data from the test component (110); A second PXI device (158) is electrically connected to the signal switching circuit (130) and the first PXI device (140) respectively, and the second PXI device (158) has a backup mode and a control mode; The first PXI device (140) is operable to send a first signal to the second PXI device (158), wherein upon receiving the first signal, the second PXI device (158) operates in a backup mode; When the second PXI device (158) does not receive the first signal within a preset time period, the second PXI device (158) switches to a control mode, controls the test component (110) through the signal switching circuit (130) to perform the fluid combustion test, and obtains test data from the test component (110).

2. The hot standby measurement and control system (100) according to claim 1, characterized in that: The first PXI device (140) comprises: a first chassis (186), a first acquisition card (188) and a first signal adapter board (190), wherein the first chassis (186) is electrically connected to the signal adapter circuit (130), and the first acquisition card (188) is electrically connected to the first signal adapter board (190); The second PXI device (158) comprises: a second chassis (192), a second acquisition card (194) and a second signal adapter board (196), the second chassis (192) is electrically connected to the signal adapter circuit (130), and the second acquisition card (194) is electrically connected to the second signal adapter board (196); The second chassis (192) is electrically connected to the first chassis (186), and the second signal adapter board (196) is electrically connected to the first signal adapter board (190).

3. The hot standby measurement and control system (100) according to claim 2, characterized in that: The first PXI device (140) sends the first signal to the second signal adapter board (196) through the first signal adapter board (190), so that the second PXI device (158) receives the first signal.

4. The hot backup measurement and control system (100) according to claim 2, characterized in that: The first PXI device (140) can also send a clock signal to the second PXI device (158), and the second PXI device (158) receives the clock signal to synchronize with the clock of the first PXI device (140).

5. The hot standby measurement and control system (100) according to claim 2, characterized in that: After the first PXI device (140) enters the ready state, the first PXI device (140) can also send a master ready signal to the second PXI device (158) so that the second PXI device (158) is initialized and switched to a backup mode; and / or The first PXI device (140) is also capable of sending a timing start signal to the second PXI device (158) to trigger the second PXI device (158) to synchronously execute a start timing operation; and / or The first PXI device (140) can also send a timing stop signal to the second PXI device (158) to trigger the second PXI device (158) to synchronously perform a stop timing operation.

6. The hot backup measurement and control system (100) according to claim 2, characterized in that: The second PXI device (158) switches to the slave control mode and enters the ready state, and then sends a slave control ready signal to the first PXI device (140), so that the first PXI device (140) switches to the bypass mode and stops working.

7. The hot standby measurement and control system (100) according to any one of claims 1 to 6, characterized in that: The hot backup measurement and control system (100) further comprises: a first power supply (144), electrically connected to the first PXI device (140), and configured to supply power to the first PXI device (140); A second power supply (162) is electrically connected to the second PXI device (158) and is used to supply power to the second PXI device (158).

8. The hot standby measurement and control system (100) according to any one of claims 1 to 6, characterized in that: The hot backup measurement and control system (100) further comprises: A first switch (146), electrically connected to the first PXI device (140), for data transmission and exchange; A first measurement and control station (150), electrically connected to the first switch (146), for processing test data and control data; A first display (152), electrically connected to the first measurement and control station (150), for displaying data; A second display (154), electrically connected to the first measurement and control station (150), for displaying data; A third power supply (156) is electrically connected to the first switch (146), the first measurement and control station (150), the first display (152) and the second display (154) respectively for supplying power.

9. The hot standby measurement and control system (100) according to any one of claims 1 to 6, characterized in that: The hot backup measurement and control system (100) further comprises: A second switch (164), electrically connected to the second PXI device (158), for data transmission and exchange; A second measurement and control station (166), electrically connected to the second switch (164), for processing test data and control data; A third display (168), electrically connected to the second measurement and control station (166), for displaying data; a fourth display (170), electrically connected to the second measurement and control station (166), and used for displaying data; A fourth power supply (172) is electrically connected to the second switch (164), the second measurement and control station (166), the third display (168) and the fourth display (170) respectively for supplying power.

10. The hot standby measurement and control system (100) according to any one of claims 1 to 6, characterized in that: The signal switching circuit (130) comprises: A signal isolation module (132), wherein an input end of the signal isolation module (132) is electrically connected to the test assembly (110), and an output end of the signal isolation module (132) is electrically connected to the first PXI device (140) and the second PXI device (158), respectively; An output switching module (134), wherein the input end of the output switching module (134) is electrically connected to the first PXI device (140) and the second PXI device (158) respectively, and the output end of the output switching module (134) is electrically connected to the test component (110).

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