Oil abrasive particle imaging detection device

Abstract

An oil abrasive particle imaging detection device comprises an outer shell, a computer, a peristaltic pump, a flow channel, a camera, a light field control module, an oil bottle, a serial port control module, an AD analog quantity output module and a microscope lens. The computer and the oil bottle are installed in the outer shell from the upper portion of the outer shell, the light field control module and the serial port control module are installed in the middle of the interior of the outer shell, the peristaltic pump is installed in the middle of the interior of the outer shell below the computer, and the partition wall of the oil bottle and the AD analog quantity output module are installed on the lower portion of the interior of the outer shell. A flow channel is arranged on the outer shell, and a camera with a microscope lens is installed in the outer shell. Compared with similar products, the device has the advantages that the influence of bubbles and abrasive particle postures on a detection result is reduced, the information of abrasive particles can be visually seen, other characteristics such as color / surface texture and the like can be extracted, meanwhile, a visual imaging technology is adopted, the step of converting a sensor analog circuit into a digital signal in the prior art is reduced, and the cost advantage is more obvious.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil fluid detection equipment, and relates to an oil fluid abrasive particle imaging detection device. Background Art

[0002] In the on-site work of power equipment, oil fluid detection is an important way to monitor faults in the operation of power equipment. As the main means for real-time detection of the oil fluid of power equipment on-site, it can timely and accurately obtain the abrasive particle information in the oil fluid inside the equipment during mechanical movement. Through the wear assessment and analysis of key components of the equipment, it can timely diagnose and handle the faults that have occurred and will occur, and avoid some unnecessary losses.

[0003] In the prior art, electromagnetic abrasive particle detection sensors are mostly used in the oil fluid abrasive particle detection devices usually adopted. The abrasive particle sensing technology of these existing electromagnetic abrasive particle detection sensors adopts the principle of electromagnetic induction. Although this kind of abrasive particle detection sensor has a simple structure and convenient detection and has been widely used. However, during the operation of the working equipment, due to the influence of bubbles and the flow state of abrasive particles on the oil fluid, the accuracy of the detected data is affected to a certain extent.

[0004] The utility model patent "an oil fluid abrasive particle detection device" authorized by the State Intellectual Property Office on July 8, 2015, with the patent number: 2015201614161, the application date: March 20, 2015, and the publication number: CN 204461949U. This utility model discloses an oil fluid abrasive particle detection device. After the sensor skeleton of this device is determined, the relationship curve between the magnetic field strength B and the number of turns n of the coil is calculated according to the formula, and the n corresponding to the maximum value of B is taken as the number of turns of the induction coil and two excitation coils. The output end of the induction coil is connected to a modulation and analysis circuit including a preamplifier circuit, a low-pass filter, a high-pass filter, and an oscilloscope connected in sequence. This device provides a modulation and analysis circuit including a preamplifier circuit, a low-pass and a high-pass filter for the signal output components. The number of turns of the sensor coil of this device can make the signal output amplitude reach the maximum. Suitable for the sensor skeleton size of mass production, select the appropriate number of turns of the coil and install it on various engines lubricated with oil fluid. However, in actual work, the influence of bubbles generated by the oil fluid used in the engine and the flow state of abrasive particles cannot be ignored, and it will inevitably have a certain impact on the accuracy of the detected data, which we should pay attention to.

[0005] Therefore, it is completely necessary to provide an oil fluid abrasive particle imaging detection device with a compact structure, easy to carry, simple to operate, and accurate in measurement. Summary of the Utility Model

[0006] The purpose of the present utility model is to provide an oil fluid abrasive particle imaging detection device, which adopts the principle of microscopic imaging, dynamically captures the information state of abrasive particles contained in the oil fluid flowing through the flow channel, and statistically analyzes the concentration, size and color of the abrasive particles during the working process of the oil fluid, and can accurately detect the number of abrasive particles in unit volume of oil fluid, improving the accuracy of oil fluid data detection of working equipment.

[0007] The technical solution adopted by the present utility model is: an oil fluid abrasive particle imaging detection device, comprising: a device housing, a computer, a peristaltic pump, a flow channel, a high-speed camera, a light field control module, an oil bottle, a serial port control module, an AD analog quantity output module, a microscopic lens, and a high-speed camera USB interface; the computer and the oil bottle are installed into the device housing from above the device housing, the light field control module and the serial port control module are installed in the middle of the device housing, below the computer, the peristaltic pump is installed in the middle of the device housing, next to the oil bottle, and the AD analog quantity output module is installed in the lower part of the device housing.

[0008] The device housing is provided with a flow channel, and a high-speed camera is installed in the device housing, and a microscopic lens is installed on the high-speed camera.

[0009] The computer is respectively connected to the high-speed camera and the serial port control module, and the high-speed camera is connected to the microscopic lens.

[0010] The flow channel is respectively communicated with the oil bottle and the high-speed camera.

[0011] The high-speed camera internally includes a high-speed camera USB interface, the high-speed camera is connected to the microscopic lens, and photographs the abrasive particles in the flowing state in the flow channel, and the photographed video data is transmitted to the computer through the high-speed camera USB interface for analysis and processing.

[0012] The serial port control module is respectively connected to the peristaltic pump and the AD analog quantity output module; the serial port control module outputs analog voltage signals according to the wiring parts to respectively connect and control the AD analog quantity output module, the peristaltic pump, the light field control module and the high-speed camera, ensuring the operation of the detection instrument.

[0013] The AD analog quantity output module is connected to the light field control module.

[0014] After the present utility model adopts the above technical solution, the following beneficial effects can be achieved: compared with similar products, the abrasive particle imaging device developed by the present utility model reduces the influence of bubbles and abrasive particle postures on the detection results. Since this technology adopts the principle of microscopic imaging, not only can the information of the abrasive particles be intuitively seen, but also other characteristics such as the color / surface texture of the abrasive particles can be extracted. At the same time, by adopting an intuitive imaging technology, the steps of converting the analog circuit of the previous sensor into a digital signal are reduced, and the cost advantage is more obvious. Description of the Drawings

[0015] Figure 1 One of the structural schematic diagrams of an oil fluid abrasive particle imaging detection device of the present utility model;

[0016] Figure 2 Another structural schematic diagram of an oil fluid abrasive particle imaging detection device of the present utility model;

[0017] Figure 3 The working process schematic block diagram of an oil fluid abrasive particle imaging detection device of the present utility model;

[0018] Figure 4 The image acquisition schematic block diagram of an oil fluid abrasive particle imaging detection device of the present utility model;

[0019] Figure 5 The schematic block diagram of the connection and operation of a computer and a serial port control module of an oil fluid abrasive particle imaging detection device of the present utility model;

[0020] In the figure: 1. Device housing, 2. Computer, 3. Peristaltic pump, 4. Flow channel, 5. High-speed camera, 6. Light field control module, 7. Oil bottle, 8. Serial port control module, 9. AD analog output module, 10. Microscopic lens, 11. High-speed camera USB interface. Specific embodiments

[0021] The following further describes the present utility model in conjunction with the accompanying drawings and examples. As Figures 1 to 5 shown: An oil fluid abrasive particle imaging detection device mainly includes: a device housing 1, a computer 2, a peristaltic pump 3, a flow channel 4, a high-speed camera 5, a light field control module 6, an oil bottle 7, a serial port control module 8, an AD analog output module 9, and a microscopic lens 10; First, the computer 2 and the oil bottle 7 are installed into the device housing 1 from above the device housing 1, the light field control module 6 and the serial port control module 8 are installed in the middle of the device housing 1, below the computer 2, the peristaltic pump 3 is installed in the middle of the external housing 1, next to the oil bottle 7, and the AD analog output module 9 is installed in the lower part of the device housing 1.

[0022] The device housing 1 is provided with a flow channel 4, and a high-speed camera 5 is installed in the device housing 1, and a microscopic lens 10 is installed on the high-speed camera 5.

[0023] The computer 2 is connected to the high-speed camera 5 through USB, the computer 2 is connected to the serial port control module 8 through a data cable, and the high-speed camera 5 is connected to the microscopic lens 10.

[0024] The serial port of the computer 2 is connected to the serial port control module 8 through a serial cable, and the serial port control module 8 is respectively connected to the AD analog output module 9, the peristaltic pump 3, the light field control module 6, and the high-speed camera 5 through its four AD output ports.

[0025] The flow channel 4 is respectively communicated with the oil bottle 7 and the microscope lens 10.

[0026] The serial port control module 8 is respectively connected with the peristaltic pump 3 and the AD analog output module 9.

[0027] The AD analog output module 9 is connected with the light field control module 6.

[0028] In the present utility model, all components of the device are installed inside the device housing 1. During operation, the computer 2 controls the serial port control module 8. The serial port control module 8 has a communication line that is directly inserted into the serial port defined by the computer 2. The computer 2 sends the instructions to be executed in digital form to the serial port control module 8. After parsing by the serial port control module 8, voltage signals are directly output according to the wiring parts to control the AD analog output module 9, the peristaltic pump 3, the light field control module 6, and the high-speed camera 5 respectively. The collection and lubricating oil flow part starts to work, and all the collected abrasive particles are stored and displayed.

[0029] The peristaltic pump 3 extracts the oil sample to be tested, flows through the flow channel 4 and then returns to the sampling point; the flow channel 4 makes the oil sample flow through the acquisition field of view at a specific speed; the high-speed camera 5 and the microscope lens 10 capture the abrasive particles in the oil in the flow channel 4 and transmit the data to the computer 2; the light field control module 6 provides a dynamic light source for the view-finding field of view and the abrasive particle characteristics, and the oil bottle 7 is used to store the oil sample to be tested; the serial port control module 8 parses the control instructions of the computer 2 and outputs them to the AD analog output module 9 and the peristaltic pump 3 respectively; the AD analog output module 9 converts the received instructions into voltage signals to control the light field control module 6; the light field control module 6 executes the voltage instructions of the AD analog output module 9 to adjust the brightness of the light field; the microscope lens 10 is a 450-fold microscope lens, and its function is to magnify and collect the objects in the flow channel 4; the illustrated high-speed camera 5 and the microscope lens 10 are in a combined mode during operation (the microscope lens 10 is installed on the high-speed camera 5). Since the detection object is particles above 3 microns, the microscope lens 10 must be used to clearly see the morphological information of the particles, that is, the color and surface texture. Through the above series of operations, the entire working process is completed.

[0030] In short, when the oil abrasive particle imaging detection device works, it first drives the peristaltic pump 3 to make the sample to be measured flow, flows through the flow channel 4, and the light field control module 6 conducts light field layout, including actions such as brightness adjustment and lighting the position lamp, so that the abrasive particle characteristics can be clearly shown. At the same time, the high-speed camera 5 equipped with the microscope lens 10 starts to collect video information and transmits the data to the computer 2 for subsequent processing.

[0031] Finally, it should be noted that the parts not described in detail in this utility model are prior art. The above description is only the preferred embodiment of this utility model. However, those skilled in the art should understand that all changes made to this utility model in terms of form and details within the scope of the substantial content defined by the claims of this utility model are within the scope of the protection of the rights of this utility model.

Claims

1. An oil fluid abrasive particle imaging detection device, comprising: Device housing (1), computer (2), peristaltic pump (3), flow channel (4), high-speed camera (5), light field control module (6), oil bottle (7), serial port control module (8), AD analog output module (9), microscope lens (10), high-speed camera USB interface (11); characterized in that: the computer (2) and the oil bottle (7) are installed into the device housing (1) from above the device housing (1), the light field control module (6) and the serial port control module (8) are installed in the middle of the device housing (1) and below the computer (2), the peristaltic pump (3) is installed in the middle of the device housing (1) and next to the oil bottle (7), and the AD analog output module (9) is installed in the lower part of the device housing (1).

2. The oil abrasive imaging detection device according to claim 1, wherein: A flow channel (4) is provided on the device housing (1), a high-speed camera (5) is installed in the device housing (1), and a microscope lens (10) is installed on the high-speed camera (5).

3. The oil abrasive imaging detection device according to claim 1, wherein: The computer (2) is respectively connected to the high-speed camera (5) and the serial port control module (8), and the high-speed camera (5) is connected to the microscope lens (10).

4. An oil fluid abrasive particle imaging detection device according to claim 2, characterized in that: The flow channel (4) is respectively communicated with the oil bottle (7) and the high-speed camera (5).

5. The oil abrasive imaging detection device according to claim 2, wherein: The high-speed camera (5) internally includes a high-speed camera USB interface (11), the high-speed camera (5) is connected to the microscope lens (10), and the flowing state abrasive particles in the flow channel (4) are photographed. The photographed video data is transmitted to the computer (2) through the high-speed camera USB interface (11) for analysis and processing.

6. The oil abrasive particle imaging detection device according to claim 1, characterized in that: The serial port control module (8) is respectively connected to the peristaltic pump (3) and the AD analog output module (9); the serial port control module (8) outputs analog voltage signals according to the wiring parts to respectively communicate and control the AD analog output module (9), the peristaltic pump (3), the light field control module (6), and the high-speed camera (5) to ensure the operation of the detection instrument.

7. The oil abrasive particle imaging detection device according to claim 1, characterized in that: The AD analog output module (9) is connected to the light field control module (6).

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