Engine test run control system

Abstract

The utility model provides an engine test run control system, comprising a first control module and a second control module which are connected with each other through a synchronous optical fiber; the first interface module, the second interface module and the switch are sequentially connected in series, and the first control module, the first interface module, the second interface module, the switch and the second control module are sequentially connected in series in an MRP ring network bus redundancy mode; the first interface module and the second interface module are respectively provided with an output module and an input module which are used for sending and receiving data. The control system can ensure quick switching when the control module or the interface module breaks down, and shutdown accidents are not prone to being caused.

Description

Technical Field

[0001] The utility model relates to the field of engine test running, in particular to an engine test running control system. Background Art

[0002] The application of engine test control related technologies can effectively improve the engine test control accuracy, test efficiency and test capability. In the current engine test control system, if a functional module fails, the control system cannot automatically switch to the corresponding redundant module for uninterrupted operation, resulting in signal transmission failure or shutdown.

[0003] In view of this, it is urgent to design an accurate, efficient and redundant test control system. Utility Model Content

[0004] The utility model aims to overcome the deficiencies of the prior art and provide an engine test control system.

[0005] The utility model provides an engine test control system, comprising: a first control module and a second control module, which are connected to each other through a synchronous optical fiber; a first interface module, a second interface module and a switch which are connected in series in sequence, and the first control module, the first interface module, the second interface module, the switch and the second control module are connected in series in sequence in a redundant manner of an MRP ring network bus; the first interface module and the second interface module are both provided with an output module and an input module for sending and receiving data.

[0006] According to an embodiment of the present invention, the first control module and the second control module are PLCs.

[0007] According to an embodiment of the present invention, the first interface module and the second interface module are ET200SP.

[0008] According to an embodiment of the present invention, the first interface module includes a first communication module, a first input module and a first output module, and the second interface module includes a second communication module, a second input module and a second output module.

[0009] According to an embodiment of the present utility model, the engine test control system further includes: a third interface module connected to the switch outside the MRP ring network.

[0010] According to an embodiment of the utility model, the engine test control system further includes: a host computer connected to the switch outside the MRP ring network.

[0011] According to one embodiment of the utility model, the engine test control system also includes: a first input branch connected to the first input module, wherein the first input branch includes a first digital input branch and a first analog input branch, and a second input branch connected to the second input module, wherein the second input branch includes a second digital input branch and a second analog input branch.

[0012] According to one embodiment of the utility model, the engine test control system also includes: a switch and a resistor arranged in parallel, the first digital quantity input branch and the second digital quantity input branch are connected in parallel; the first digital quantity input branch and the second digital quantity input branch in parallel are electrically connected to the switch and the resistor in parallel, and pressure sensors are arranged on both the first analog quantity input branch and the second analog quantity input branch.

[0013] According to one embodiment of the utility model, the engine test control system also includes: a first output branch connected to the first output module, wherein the first output branch includes a first digital output branch and a first analog output branch, and a second output branch connected to the second output module, wherein the second output branch includes a second digital output branch and a second analog output branch.

[0014] According to an embodiment of the present utility model, a first diode is respectively provided on the first digital quantity output branch and the second digital quantity output branch, and a second diode is respectively provided on the first analog quantity output branch and the second analog quantity output branch.

[0015] The engine test control system in this embodiment can quickly switch when a control module or interface module fails through the control level redundancy setting mode of the first control module and the second control module on the MRP ring network bus structure, as well as the module level redundancy setting mode of the first interface module and the second interface module on the MRP ring network bus structure, thereby ensuring the rapid recovery of the engine test control system failure and improving the engine test efficiency.

[0016] It should be understood that the above general description and the following specific embodiments are only exemplary and illustrative and are not intended to limit the scope of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following drawings are a part of the specification of the present utility model, which illustrate exemplary embodiments of the present utility model. The attached drawings and the description of the specification are used to explain the principle of the utility model.

[0018] Figure 1 It is a schematic diagram of an engine test control system according to an embodiment of the utility model;

[0019] Figure 2 is a schematic diagram of an engine test control system according to another embodiment of the utility model;

[0020] Figure 3 It is a schematic diagram of an engine test control system according to another embodiment of the utility model.

[0021] Reference numerals:

[0022] 100 - first control module, 200 - second control module, 300 - first interface module, 400 - second interface module, 500 - switch, 600 - third interface module, 700 - host computer. DETAILED DESCRIPTION

[0023] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present invention and are used to illustrate the principles of the present invention, and are not configured to limit the present invention. In addition, the structural components in the drawings are not necessarily drawn to scale. For example, the sizes of some structural components or areas in the drawings may be enlarged for other structural components or areas to help understand the embodiments of the present invention.

[0024] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of the embodiments of the utility model. In the description of the utility model, it should be noted that, unless otherwise specified, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances.

[0025] In addition, the terms "include", "comprise", "have" or any other variations thereof are intended to cover non-exclusive inclusion, so that a structure or component including a series of elements includes not only those elements, but also other mechanical elements that are not explicitly listed or inherent in the structure or component. In the absence of more restrictions, the elements defined by the sentence "include..." do not exclude the existence of other identical elements in the article or device including the elements.

[0026] Spatially related terms such as "below", "beneath", "under", "low", "above", "on", "high", etc. are used to facilitate description to explain the positioning of one element relative to a second element, indicating that these terms are intended to cover different orientations of the device in addition to orientations different from those shown in the figures. In addition, for example, "one element is above / below another element" can mean that the two elements are in direct contact, or that there are other elements between the two elements. In addition, terms such as "first", "second", etc. are also used to describe various elements, regions, parts, etc., and should not be regarded as limiting. Similar terms represent similar elements throughout the description.

[0027] For those skilled in the art, the present invention can be implemented without some of these specific details. The following description of the embodiments is only intended to provide a better understanding of the present invention by showing examples of the present invention.

[0028] Figure 1 It is a schematic diagram of an engine test control system according to an embodiment of the utility model; Figure 2 is a schematic diagram of an engine test control system according to another embodiment of the utility model; Figure 3 It is a schematic diagram of an engine test control system according to another embodiment of the utility model.

[0029] like Figure 1 As shown, the utility model provides an engine test control system, including: a first control module 100 and a second control module 200, which are connected to each other through a synchronous optical fiber; a first interface module 300, a second interface module 400 and a switch 500 which are connected in series in sequence, and the first control module 100, the first interface module 300, the second interface module 400, the switch 500 and the second control module 200 are connected in series in sequence in a redundant manner of an MRP ring network bus; the first interface module 300 and the second interface module 400 are both provided with an output module and an input module for sending and receiving data.

[0030] According to an embodiment of the present invention, the first control module 100 and the second control module 200 are PLCs.

[0031] According to an embodiment of the present invention, the first interface module 300 and the second interface module 400 are ET200SP.

[0032] Specifically, the first control module 100 and the second control module 200 form control-level redundancy, wherein the PLC type of the first control module 100 and the second control module 200 can adopt S7-1517H, and the CPUs of both can process the same project data and the same user program in parallel. In the present application, the control system synchronizes the first control module 100 and the second control module 200 through two synchronous optical fibers. If the first control module 100 fails, the second control module 200 will take over the control of the first control module 100, and vice versa. The control system of the present application can use special optical fiber synchronization to achieve millisecond-level fast and smooth switching between modules to ensure the continuous operation of the engine test control system. The first control module 100 and the second control module 200 improve the reliability and availability of the system through redundant cooperation, and reduce the risk of test shutdown.

[0033] The X3 and X4 interfaces of the first control module 100 and the X3 and X4 interfaces of the second control module 200 are synchronized through a dedicated synchronous optical fiber, and the program is downloaded to the first control module 100. When the engine test control system is powered on, the first control module 100 transmits the program to the second control module 200 through the synchronous optical fiber.

[0034] Furthermore, the first interface module 300 and the second interface module 400 form module-level redundancy, for example, the module type can be selected as ET200SP. The hardware configuration of the first interface module 300 and the second interface module 400 is the same, and it is required to provide a reliable signal acquisition method. The field signal is connected in pairs to the branches corresponding to the first interface module 300 and the second interface module 400, and each branch can detect whether the input signal is normal.

[0035] The engine test control system in this embodiment can quickly switch when a control module or interface module fails by setting redundant control modules and interface modules on the MRP ring network bus structure, thereby ensuring rapid recovery of the engine test control system failure. The first interface module 300 and the second interface module 400 are connected to the engine test control system through the MRP ring network of the Profinet bus, which can provide reliable network communication.

[0036] According to an embodiment of the present invention, the first interface module 300 includes a first communication module, a first input module and a first output module, and the second interface module 400 includes a second communication module, a second input module and a second output module.

[0037] like Figure 2 As shown, according to one embodiment of the present utility model, the engine test control system further includes: a third interface module 600 connected to the switch 500 outside the MRP ring network.

[0038] According to an embodiment of the present invention, the engine test control system further includes: a host computer 700 connected to the switch 500 outside the MRP ring network.

[0039] According to one embodiment of the utility model, the engine test control system also includes: a first input branch connected to the first input module, wherein the first input branch includes a first digital input branch and a first analog input branch, and a second input branch connected to the second input module, wherein the second input branch includes a second digital input branch and a second analog input branch.

[0040] like Figure 3 As shown, according to one embodiment of the utility model, the engine test control system also includes: a switch and a resistor arranged in parallel, the first digital input branch and the second digital input branch are connected in parallel; the parallel first digital input branch and the second digital input branch are electrically connected to the parallel switch and the resistor, and pressure sensors are arranged on the first analog input branch and the second analog input branch.

[0041] According to one embodiment of the utility model, the engine test control system also includes: a first output branch connected to the first output module, wherein the first output branch includes a first digital output branch and a first analog output branch, and a second output branch connected to the second output module, wherein the second output branch includes a second digital output branch and a second analog output branch.

[0042] like Figure 3 As shown, according to an embodiment of the present utility model, a first diode is respectively provided on the first digital output branch and the second digital output branch, and a second diode is respectively provided on the first analog output branch and the second analog output branch.

[0043] Specifically, the first communication module of the first interface module 300 and the second communication module of the second interface module 400 can both select IM155-6PN. The MRP ring network bus is connected by a Profinet network cable, and the first control module 100, the first communication module, the second communication module, and the second control module 200 are respectively provided with P1 and P2 network ports. The P1 network port of the first control module 100 is connected to the P1 network port of the first communication module through a Profinet network cable, the P2 network port of the first communication module is connected to the P1 network port of the second communication module through a Profinet network cable, the P2 network port of the second communication module is connected to the network port of the switch 500 through a Profinet network cable, the switch 500 is connected to the P2 network port of the second control module 200 through a Profinet network cable, and the P1 network port of the second control module 200 is connected to the P2 network port of the first control module 100 through a Profinet network cable.

[0044] In one embodiment, a network port of the switch 500 is connected to the input and output modules of the third interface module 600. As a non-redundant module, the third interface module 600 is not connected to the MRP ring network. Generally, the third interface module 600 can be used to connect non-important field signal transmission. For example, signals that do not require redundant control can be connected to the control system through the switch 500, and can be arranged at the test site for easy wiring. The host computer 700 can display the signals uploaded by the first interface module 300, the second interface module 400 and the third interface module 600 on the screen for easy viewing and control by operators.

[0045] As one embodiment, the digital input signal is transmitted to the first input module and the second input module through the first digital input branch and the second digital input branch, respectively, and the digital output signal is output from the first output module and the second output module through the first digital output branch and the second digital output branch. The analog input signal is transmitted to the first input module and the second input module through the first analog input branch and the second analog input branch, respectively, and the analog output signal is output from the first output module and the second output module through the first analog output branch and the second analog output branch. That is, each signal has two branches to provide redundant communication. If the evaluation quality of the two redundant branch signals is normal, the dual-branch operation is performed. If only one branch signal has normal quality, it is switched to single-branch operation. If both branch signals are abnormal, it is operated according to a predefined state, which can be the last value or the replacement value as the application value.

[0046] The parallel switch and resistor are connected in series with the parallel first digital input branch and the second digital input branch to input the digital signal, wherein the switch and resistor are used to diagnose whether the wire is broken. For example, the value of the resistor can be set between 25kΩ and 45kΩ.

[0047] Optionally, the first digital quantity output branch and the second digital quantity output branch respectively output digital quantity signals through the first diode, and the first diode is set to protect the digital quantity output from the influence of the power supply current. If the status of both branches is normal, both branches will work. If one branch is disconnected and restored, the system can switch to dual-branch operation after maintaining single-branch operation for two seconds. If the positive state is not detected within two seconds, the system will switch back to single-branch operation.

[0048] In some optional embodiments, pressure sensors are connected to the first analog input branch and the second analog input branch respectively. If the analog values ​​input by the two pressure sensors are within the valid value range, the system can be configured to use three different options: average value, smaller value or larger value as the application value. If one of the two branches is outside the valid range for too long, after exceeding the set difference time, the state of the branch is calibrated as a fault. The branch calibrated as a fault will be passivated, the branch data will not work, and the normal branch value will be used as the application value. If both branches fail at the same time, both branches will be passivated, and the system will use the last valid value or preset value as the application value according to the settings. When the branch state returns to normal from the fault, in order to prevent signal vibration, a signal deviation range can be defined. When the two branch signals deviate to a certain range, the function block can reintegrate the two signals.

[0049] Furthermore, a second diode is connected to the first analog output branch and the second analog output branch respectively, and the control current range is 4-20mA to protect the analog signal output of the first control module 100 and the second control module 200 from being affected by the current. During the operation of the system, it is first detected whether the signal output is normal. If it is normal, the two branches output 50% of the required current respectively. If a branch is in a fault state, the branch will be passivated, and the other branch will output 100% of the required current. In order to prevent the fault branch from returning to normal and applying more than 100% of the current to the analog output actuator during reintegration, the normal branch current linearly reduces the output value, and the restored branch linearly increases the output value, so that the first analog output branch and the second analog output branch both provide 50% of the required current.

[0050] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An engine test control system, characterized in that: include: The first control module and the second control module are connected to each other via a synchronous optical fiber; The first interface module, the second interface module and the switch are connected in series in sequence, and the first control module, the first interface module, the second interface module, the switch and the second control module are connected in series in sequence in a MRP ring network bus redundancy manner; The first interface module and the second interface module are both provided with an output module and an input module for sending and receiving data.

2. The engine test control system according to claim 1, characterized in that: The first control module and the second control module are PLCs.

3. The engine test control system according to claim 1, characterized in that: The first interface module and the second interface module are ET200SP.

4. The engine test control system according to claim 3, characterized in that: The first interface module includes a first communication module, a first input module and a first output module, and the second interface module includes a second communication module, a second input module and a second output module.

5. The engine test control system according to claim 1, characterized in that: Also includes: The third interface module is connected to the switch outside the MRP ring network.

6. The engine test control system according to claim 1, characterized in that: Also includes: A host computer is connected to the switch outside the MRP ring network.

7. The engine test control system according to claim 4, characterized in that: Also includes: A first input branch connected to the first input module, wherein the first input branch includes a first digital input branch and a first analog input branch, And a second input branch connected to the second input module, wherein the second input branch includes a second digital input branch and a second analog input branch.

8. The engine test control system according to claim 7, characterized in that: It also includes a switch and a resistor arranged in parallel, the first digital quantity input branch and the second digital quantity input branch are connected in parallel; the first digital quantity input branch and the second digital quantity input branch connected in parallel are electrically connected to the switch and the resistor connected in parallel, and pressure sensors are arranged on both the first analog quantity input branch and the second analog quantity input branch.

9. The engine test control system according to claim 4, characterized in that: Also includes: A first output branch connected to the first output module, wherein the first output branch includes a first digital output branch and a first analog output branch, And a second output branch connected to the second output module, wherein the second output branch includes a second digital output branch and a second analog output branch.

10. The engine test control system according to claim 9, characterized in that: A first diode is provided on the first digital quantity output branch and the second digital quantity output branch, respectively; and a second diode is provided on the first analog quantity output branch and the second analog quantity output branch, respectively.

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