Portable intelligent engine actuator cylinder pressing system and method based on machine vision

Abstract

The invention discloses a portable intelligent engine actuator cylinder pressing system and method based on machine vision, and relates to the technical field of actuator cylinders. Comprising a hydraulic power module, an engine actuating cylinder, a motor control module, a machine vision intelligent feedback module and a master control upper computer module. According to the invention, precise pressing of the actuating cylinder can be realized while the pressing efficiency is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of actuators, and in particular to a portable intelligent engine actuator pressing system and method based on machine vision. Background Art

[0002] The actuator is an adjustment accessory on the aircraft engine, also known as a hydraulic cylinder, which consists of a cylinder, a liner, a piston, a rubber seal and other parts. It is a common type of actuator in the hydraulic transmission system and an energy conversion device that converts hydraulic energy into mechanical energy. When the actuator is fixed, liquid is input. When the liquid pressure rises to a level sufficient to overcome the external load, the piston begins to move in the opposite direction. Simply put, the actuator uses hydraulic pressure to overcome the load. Therefore, it is very important to accurately control the hydraulic strength in the actuator.

[0003] The traditional process of depressurizing the engine actuator mostly relies on manual self-checking, reading the pointer reading on the engine actuator dial and feeding back to the main control operator by calling out loudly. If the manual feedback speed is too slow, it will also cause the actuator pressure to overshoot, requiring oil to be drained and the refueling process to be repeated. Considering that the above situation often occurs, it makes the depressurization of the actuator difficult and inefficient.

[0004] In recent years, with the development of intelligent industries, machine vision technology has been favored by many industries due to its non-contact, high efficiency and high precision. The intelligent and automated engine actuator pressure control method combined with machine vision technology has also become a research and development direction.

[0005] Therefore, how to provide a portable intelligent engine actuator pressure relief system and method based on machine vision, accurately read the engine actuator dial reading in real time through vision, feed back to the industrial computer, combine the pressure relief speed regulation method, ensure the pressure relief efficiency while achieving accurate pressure relief of the actuator, is a problem that technical personnel in this field urgently need to solve. Summary of the invention

[0006] In view of this, the present invention provides a portable intelligent engine actuator pressure relief system and method based on machine vision, which can achieve accurate pressure relief of the actuator while ensuring the pressure relief efficiency.

[0007] In order to achieve the above object, the present invention adopts the following technical solution:

[0008] A portable intelligent engine actuator pressure system based on machine vision, comprising: a hydraulic power module, an engine actuator, a motor control module, a machine vision intelligent feedback module and a main control host computer module;

[0009] A hydraulic power module connected to an input end of the engine actuator and used to deliver power fluid or lubricating fluid to the engine actuator;

[0010] The motor control module is connected to the input end of the hydraulic power module and is used to control the delivery speed of the hydraulic power module to deliver power fluid or lubricating fluid;

[0011] The machine vision intelligent feedback module is connected to the first input / output terminal of the main control host computer module, and is used to read the pointer indication on the scale plate of the engine actuator, and to feed back the power fluid or lubricating fluid pressure in the engine actuator to the main control host computer module in real time;

[0012] The second input and output end of the main control host computer module is connected to the motor control module for processing and optimizing the communication information between the machine vision intelligent feedback module and the motor control module, so that the engine actuator compression process forms a closed-loop feedback control.

[0013] In the above system, optionally, the machine vision intelligent feedback module includes: a camera bracket, and an industrial camera and a light source arranged on the camera bracket.

[0014] In the above system, optionally, the motor control module and the hydraulic power module are arranged in the portable pressure tester, the main control host computer module is an industrial computer, and the motor control module includes a servo of an oil pump and a reversing valve.

[0015] In the above system, optionally, the industrial camera is connected to the industrial computer via a network cable and provides feedback, and the industrial computer communicates with the server of the oil pump and the reversing valve in the motor control module.

[0016] A portable intelligent engine actuator pressure test method based on machine vision, applied to any of the above-mentioned portable intelligent engine actuator pressure test systems based on machine vision, comprises the following steps:

[0017] S1. Turn on the industrial computer, open the upper computer software, connect the industrial camera and the portable pressure tester, and set the target value of the transmitter actuator pressure;

[0018] S2. Install and adjust the industrial camera and camera bracket so that the industrial camera is aligned with the pressure dial of the aircraft engine actuator;

[0019] S3, the industrial camera takes a picture to feed back the pressure dial image, the industrial computer processes the image to identify the current pressure, and calculates the ratio of the current pressure of the engine actuator to the target pressure;

[0020] S4, controlling the motor control servo of the portable pressure tester according to the visual feedback data, and adjusting the pressure test speed of the oil pump in sections;

[0021] S5. Repeat S3-S4 until the transmitter actuator pressure reaches the target value, then stop pressurizing and notify the operator.

[0022] The above method is optional. In S1, the operator opens the industrial computer and the host computer software outside the aircraft, connects the industrial computer to the industrial camera, connects the motor control server of the portable pressure tester to the industrial computer, and connects the oil pipe to the refueling port of the engine actuator; at the same time, the operator inputs the pressure target value of this pressure test on the host computer software.

[0023] It can be seen from the above technical solutions that, compared with the prior art, the present invention provides a portable intelligent engine actuator depressurization system and method based on machine vision, which has the following beneficial effects:

[0024] The pointer reading on the dial of the engine actuator is read in real time through machine vision technology, and is fed back to the main control host computer module in real time. At the same time, a method of step-by-step speed adjustment from fast to slow is designed to pressurize the power fluid. When the pressure is low, the power fluid is quickly delivered to quickly fill the engine actuator, and the speed is reduced to a low speed in the final stage to prevent overshoot of the power fluid pressure, thereby ensuring the success rate of the pressurization. The present invention improves the efficiency of the engine actuator pressurization process and the accuracy of the pressurization results, reduces the number of professional operators required for the traditional engine actuator pressurization process, reduces the professional skill requirements for operators, and can effectively improve the fighter's cyclic combat capability. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0026] Figure 1 This is a structural block diagram of a portable intelligent engine actuator suppression system based on machine vision disclosed by the present invention;

[0027] Figure 2 A schematic diagram of a portable intelligent engine actuator suppressing system based on machine vision disclosed in an embodiment of the present invention;

[0028] Figure 3 This is a flow chart of a portable intelligent engine actuator pressing method based on machine vision disclosed in the present invention;

[0029] Figure 4 This is a flow chart of intelligent suppression control disclosed in an embodiment of the present invention. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] In this application, relational terms such as first and second, etc. are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. The terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, the elements defined by the sentence "comprise one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0032] Reference Figure 1 As shown, the present invention discloses a portable intelligent engine actuator pressure system based on machine vision, including: a hydraulic power module, an engine actuator, a motor control module, a machine vision intelligent feedback module and a main control host computer module;

[0033] A hydraulic power module connected to an input end of the engine actuator and used to deliver power fluid or lubricating fluid to the engine actuator;

[0034] The motor control module is connected to the input end of the hydraulic power module and is used to control the delivery speed of the hydraulic power module to deliver power fluid or lubricating fluid;

[0035] The machine vision intelligent feedback module is connected to the first input / output terminal of the main control host computer module, and is used to read the pointer indication on the scale plate of the engine actuator, and to feed back the power fluid or lubricating fluid pressure in the engine actuator to the main control host computer module in real time;

[0036] The second input and output end of the main control host computer module is connected to the motor control module for processing and optimizing the communication information between the machine vision intelligent feedback module and the motor control module, so that the engine actuator compression process forms a closed-loop feedback control.

[0037] See also Figure 2 As shown, the machine vision intelligent feedback module includes: a camera bracket, and an industrial camera and a light source arranged on the camera bracket.

[0038] The motor control module and the hydraulic power module are arranged in the portable pressure tester. The main control host computer module is an industrial computer. The motor control module includes a servo of an oil pump and a reversing valve.

[0039] The industrial camera is connected to the industrial computer via a network cable and provides feedback. The industrial computer communicates with the server of the oil pump and the reversing valve in the motor control module.

[0040] and Figure 1 and 2 The portable intelligent engine cylinder pressure-pressing system based on machine vision is shown in the figure. The present invention also discloses a portable intelligent engine cylinder pressure-pressing method based on machine vision, which is applied to Figure 1 and Figure 2 In the system shown, the method flow is specifically referred to Figure 3 and 4 The method shown includes two processes: visual feedback and pressure speed regulation;

[0041] Visual feedback process:

[0042] S1. Turn on the industrial computer, open the upper computer software, connect the industrial camera and the portable pressure tester, and set the target value of the transmitter actuator pressure;

[0043] S2. Install and adjust the industrial camera and camera bracket so that the industrial camera is aligned with the pressure dial of the aircraft engine actuator;

[0044] S3, the industrial camera takes a picture to feed back the pressure dial image, the industrial computer processes the image to identify the current pressure, and calculates the ratio of the current pressure of the engine actuator to the target pressure;

[0045] Pressure speed regulation process:

[0046] S4, controlling the motor control servo of the portable pressure tester according to the visual feedback data, and adjusting the pressure test speed of the oil pump in sections;

[0047] S5. Repeat S3-S4 until the transmitter actuator pressure reaches the target value, then stop pressurizing and notify the operator.

[0048] Furthermore, in S1, the operator opens the industrial computer and the host computer software outside the aircraft, connects the industrial computer to the industrial camera, connects the motor control server of the portable pressure tester to the industrial computer, and connects the oil pipe to the refueling port of the engine actuator; at the same time, the operator inputs the pressure target value of this pressure test on the host computer software.

[0049] Furthermore, a simple camera bracket is installed in S2, and the camera bracket is moved in front of the pressure dial, and the angle of the industrial camera is adjusted to align it with the pressure dial; the light source (ring light source) is turned on, and the industrial computer interface image obtained by remote projection is used to adjust the focal length and aperture of the industrial camera so that the imaging clarity of the intensity dial meets the requirements of scale recognition.

[0050] Furthermore, in S3, the operator clicks the start button of the host computer software, and the system starts to pressurize; the industrial camera takes pictures in real time, the industrial computer processes the feedback image, and reads the intensity dial reading accurately in real time through template matching and OCR recognition algorithm, and calculates the pressure percentage p, where p is the ratio of the current pressure value to the target pressure value.

[0051] Furthermore, in S4, the oil pump pressure speed v is adjusted according to the visual feedback pressure percentage p. c To conduct segmented precise control:

[0052]

[0053] Among them, v max is the maximum pressure speed of the oil pump, v min1 With v min2 Set by the operator; the upper computer controls the servo to adjust the oil pump pressure speed according to the pressure speed.

[0054] In order to clearly illustrate the interchangeability of hardware and software, the above description has generally described the components and steps of each example according to function. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present invention.

[0055] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A portable intelligent engine cylinder depressurization system based on machine vision, characterized in that: include: Hydraulic power module, engine actuator, motor control module, machine vision intelligent feedback module and main control host computer module; A hydraulic power module connected to an input end of the engine actuator and used to deliver power fluid or lubricating fluid to the engine actuator; The motor control module is connected to the input end of the hydraulic power module and is used to control the delivery speed of the hydraulic power module to deliver power fluid or lubricating fluid; The machine vision intelligent feedback module is connected to the first input / output terminal of the main control host computer module, and is used to read the pointer indication on the scale plate of the engine actuator, and to feed back the power fluid or lubricating fluid pressure in the engine actuator to the main control host computer module in real time; The second input and output end of the main control host computer module is connected to the motor control module for processing and optimizing the communication information between the machine vision intelligent feedback module and the motor control module, so that the engine actuator compression process forms a closed-loop feedback control.

2. The portable intelligent engine cylinder depressurization system based on machine vision according to claim 1 is characterized in that: The machine vision intelligent feedback module includes: a camera bracket, and an industrial camera and a light source arranged on the camera bracket.

3. The portable intelligent engine cylinder depressurization system based on machine vision according to claim 2 is characterized in that: The motor control module and the hydraulic power module are arranged in the portable pressure tester. The main control host computer module is an industrial computer. The motor control module includes a servo of an oil pump and a reversing valve.

4. The portable intelligent engine cylinder depressurization system based on machine vision according to claim 3 is characterized in that: The industrial camera is connected to the industrial computer via a network cable and provides feedback. The industrial computer communicates with the server of the oil pump and the reversing valve in the motor control module.

5. A portable intelligent engine actuator pressure test method based on machine vision, applied to a portable intelligent engine actuator pressure test system based on machine vision as claimed in any one of claims 1 to 4, characterized in that: The following steps are involved: S1. Turn on the industrial computer, open the upper computer software, connect the industrial camera and the portable pressure tester, and set the target value of the transmitter actuator pressure; S2. Install and adjust the industrial camera and camera bracket so that the industrial camera is aligned with the pressure dial of the aircraft engine actuator; S3, the industrial camera takes a picture to feed back the pressure dial image, the industrial computer processes the image to identify the current pressure, and calculates the ratio of the current pressure of the engine actuator to the target pressure; S4, controlling the motor control servo of the portable pressure tester according to the visual feedback data, and adjusting the pressure test speed of the oil pump in sections; S5. Repeat S3-S4 until the transmitter actuator pressure reaches the target value, then stop pressurizing and notify the operator.

6. A portable intelligent engine cylinder pressing method based on machine vision according to claim 5, characterized in that: In S1, the operator opens the industrial computer and the host computer software outside the aircraft, connects the industrial computer to the industrial camera, connects the motor control server of the portable pressure tester to the industrial computer, and connects the oil pipe to the refueling port of the engine actuator; at the same time, the operator enters the pressure target value of this pressure test on the host computer software.

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