Calibration support suitable for cloud particle imager CPI

Abstract

The utility model discloses a calibration support suitable for a cloud particle imager CPI. The support comprises the following components: a phi 3.2 copper pipe, a copper pipe fixing plug, an inlet end cover, a phi 8 protection pipe and a middle cover. Through reasonable design and precise assembly, the calibration bracket can stably support and accurately position small particles of standard particles, so that the small particles pass through a detection area of a cloud particle imager. In the assembling process, the protection tube and the middle cover are assembled together through threads, and a taper fit clamping and fixing structure is used, so that the stability of equipment and the measurement accuracy in the calibration process are ensured. The calibration support has the advantages of being stable in structure, easy and convenient to operate, accurate in calibration, convenient to maintain and the like, effectively improves the calibration efficiency of the cloud particle imager and the reliability of a measurement result, is suitable for various types of cloud particle imager equipment, and has wide application prospects.

Description

Technical Field

[0001] The utility model relates to the technical field of atmosphere calibration, and more specifically to a calibration bracket for a cloud particle imager CPI. Background Art

[0002] The Cloud Particle Imager (CPI) is an airborne atmospheric research instrument developed and produced by SPEC in the United States that captures high-resolution images of particles as they pass through the instrument. It can be broken down into three basic parts. The first part, the data acquisition system, is installed in a rack-mounted computer chassis. This is usually installed in the aircraft cabin. The second part is the sensor head, which is located on the fuselage or wing outside the aircraft. The third part, the power system, occupies the space between the rack-mounted computer chassis and the sensor head. In the CPI, the dual-beam particle detection system uses a high-power laser flash at the moment the particle enters the target plane of the imaging system. The CCD camera records the particle image and sends the frame containing the particle to the image processing system, which locates the particle in the image and cuts out these regions of interest (ROI) for display and recording. The electronics in the sensor monitor and control numerous parameters as directed by the software in the data acquisition system. The imaging system uses a 1024x 1024 pixel monochrome digital camera with an 8-bit resolution (256 levels) and an effective pixel size of 2.3 microns. The camera can download approximately 72 frames per second, enabling the instrument to quickly image small cloud particles.

[0003] As a precision detection device, the CPI probe needs to be maintained every three months. In order to ensure the accuracy of the CPI measurement results, it needs to be calibrated regularly. Simple calibration is performed every six months, and a comprehensive calibration is required once a year.

[0004] However, the existing CPI calibration process has the following problems: the lack of a specially designed calibration bracket makes it difficult to ensure that the calibration ball particles accurately pass through the CPI detection area during the calibration process. The measurement errors caused by the equipment or operators are large, affecting the accuracy and efficiency of the calibration. The existing calibration method is complicated to operate and has low calibration efficiency.

[0005] Therefore, it is particularly important to provide a calibration bracket suitable for CPI to provide a stable support structure and ensure that the standard particle beads accurately pass through the detection area of ​​CPI. This not only helps to reduce or eliminate measurement errors caused by equipment or operators, but also improves calibration efficiency and the reliability of measurement results, ensuring the reliability of measurement data of CPI in long-term use. Utility Model Content

[0006] In view of this, the utility model provides a calibration bracket for a cloud particle imager CPI.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions, including: an intermediate cover and a protective tube whose one end is assembled with the intermediate cover by threads, the copper tube passes through the protective tube and forms a clearance fit with the protective tube, the other end of the protective tube is locked with the end cover by threads, and the copper tube fixing plug is inserted into the protective tube and cooperates with the intermediate cover to fix the copper tube in the center position.

[0008] Preferably, in the calibration bracket of the cloud particle imager CPI, the copper tube has a diameter of 3.2 mm and is made of brass.

[0009] Preferably, in the calibration bracket of the cloud particle imager CPI, the protection tube has a diameter of 8 mm and is made of organic glass.

[0010] Preferably, in the calibration bracket of the cloud particle imager CPI, the middle cover and the end cover are both made of 1060 alloy.

[0011] Preferably, in the calibration bracket of the cloud particle imager CPI, the copper tube fixing plug is made of nylon.

[0012] It can be known from the above technical solutions that, compared with the prior art, the utility model discloses a calibration bracket for a cloud particle imager CPI. The utility model has a reasonable design and a stable supporting structure. It can keep the position of the instrument and the calibration ball particles fixed during the calibration process, avoiding measurement errors caused by equipment shaking or unstable operation of the operator. Through the calibration bracket of the utility model, the standard particle ball particles can accurately pass through the detection area of ​​the cloud particle imager, ensuring the accuracy of each calibration, thereby improving the accuracy and reliability of the measurement results. The design of the calibration bracket takes into account the simplicity of operation. It is easy to assemble and disassemble through threaded assembly and clamping fixation, reducing the workload of the operator and improving the calibration efficiency. The calibration bracket design of the utility model is conducive to the maintenance of the equipment. Through reasonable structural design, the calibration and disassembly process is simple, which is convenient for regular maintenance and inspection, and prolongs the service life of the instrument. Through a stable and reliable calibration bracket, the measurement errors caused by the equipment or the operator can be reduced or eliminated, ensuring the consistency and reliability of the measurement data of the cloud particle imager during long-term use. The calibration bracket of the utility model is applicable to various models of cloud particle imaging equipment, not only to CPI of SPEC company, but also to other similar imaging equipment through adjustment of design, and has broad application prospects.

[0013] In summary, the utility model provides a calibration bracket for cloud particle imaging instrument with stable structure, simple operation and accurate calibration, which significantly improves the efficiency of the calibration process and the reliability of the measurement results, and provides reliable data guarantee for atmospheric research. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model 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 in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0015] Figure 1 The accompanying drawing is a schematic diagram of the exploded structure of the utility model.

[0016] Figure 2 The accompanying drawing is a schematic diagram of the main structure of the utility model.

[0017] Figure 3 The accompanying drawing is a left view of the utility model.

[0018] Figure 4 The accompanying drawing is a right side view of the utility model.

[0019] Figure 5 The accompanying drawing is a front view of the utility model. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Please refer to the attached Figure 1-5 , is a calibration bracket of a cloud particle imager CPI disclosed in the utility model.

[0022] The research on the calibration bracket of cloud particle imager needs to provide a stable support structure. The standard particle beads need to pass through two PDS laser beams that are orthogonal to each other to form a volume of about 2.5mm x 2.5mm x 0.5mm. It can be effective only when it is located in the center of the instrument sample tube. By developing a calibration bracket suitable for cloud particle imager equipment, it can help reduce or eliminate measurement errors caused by the equipment or the operator itself, improve calibration efficiency and the reliability of measurement results, thereby ensuring the reliability of long-term measurement data of CPI during use.

[0023] The utility model designs a calibration bracket suitable for CPI to ensure that simulated particles of standard size pass through the detection area of ​​CPI correctly. The bracket is divided into five parts, including a φ3.2 copper tube 1, a copper tube fixing plug 2, an inlet cover 3, a φ8 protection tube 4, and an intermediate cover 5.

[0024] Assemble the middle cover and the protective tube together through threads, and assemble the 3.2 copper tube 1 through the middle hole; insert it into the equipment through the air outlet of the equipment, and when the inlet leaks out of the tube, lock the inlet cover 3 through the thread; clamp and fix it with the taper of the middle cover 5; then pass the copper tube fixing plug 2 through the 3.2 copper tube, insert the protective tube 4 and cooperate with the middle cover 5 to fix the center position of the copper tube 1.

[0025] When the bracket needs to be removed, remove the copper pipe fixing plug 2 at the air inlet, then loosen the end cover 3 and tap it gently in the direction of the air outlet. When the middle cover 5 feels loose, remove the end cover 3, then remove the end cover 3, protective tube 4 and copper tube 1. Then disassemble them one by one.

[0026] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0027] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those 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 will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A calibration bracket suitable for cloud particle imager CPI, characterized in that: include: The intermediate cover (5) and a protective tube (4) whose one end is assembled with the intermediate cover (5) by means of threads, the copper tube (1) passes through the protective tube (4) and forms a clearance fit with the protective tube (4), the other end of the protective tube (4) is locked with the inlet cover (3) by means of threads, the copper tube fixing plug (2) is inserted into the protective tube (4) and fits with the intermediate cover (5) so that the copper tube (1) is fixed at the center position.

2. The calibration bracket for cloud particle imager CPI according to claim 1, characterized in that: The copper tube (1) has a diameter of 3.2 mm and is made of brass.

3. The calibration bracket for cloud particle imager CPI according to claim 1, characterized in that: The protection tube (4) has a diameter of 8 mm and is made of organic glass.

4. The calibration bracket for cloud particle imager CPI according to claim 1, characterized in that: The middle cover (5) and the end cover (3) are both made of 1060 alloy.

5. The calibration bracket for cloud particle imager CPI according to claim 1, characterized in that: The copper tube fixing plug (2) is made of nylon.

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