CN219039394U

CN219039394U - Precipitation particle imager with good deicing and defogging effects

Info

Publication number: CN219039394U
Application number: CN202223426986.8U
Authority: CN
Inventors: 郭洪刚; 张王伟; 李大臻; 张涛; 王路
Original assignee: Sichuan Xihua General Aviation Co ltd
Current assignee: Sichuan Xihua General Aviation Co ltd
Priority date: 2022-12-20
Filing date: 2022-12-20
Publication date: 2023-05-16
Anticipated expiration: 2032-12-20

Abstract

The utility model discloses a precipitation particle imager with good deicing and defogging effects, which belongs to the technical field of meteorological detection equipment and comprises a shell, two detection arms and a detection system, wherein the detection arms are arranged at the front end of the shell in a V shape, the detection system is arranged in the shell and the detection arms, a first window and a second window are respectively arranged at the inner sides of the front ends of the two detection arms, a deicing device and a defogging device are respectively arranged at the first window and the second window, the defogging device comprises a cleaning brush and a driving motor, the cleaning brush is rotatably supported at the outer sides of the first window and the second window through a rotating shaft, the driving motor is arranged in the detection arms, and an output shaft of the driving motor is connected with the rotating shaft. Its simple structure, convenient to use, defroster can avoid the outside of first window and second window to fog, and defroster can avoid the outside of first window and second window to freeze to guaranteed the light transmissivity of window, better assurance measuring result's accuracy.

Description

Precipitation particle imager with good deicing and defogging effects

Technical Field

The utility model belongs to the technical field of meteorological detection equipment, and particularly relates to a precipitation particle imager with good deicing and defogging effects.

Background

Precipitation particle imager is one of the main devices for studying weather and artificially influencing the weather, and its principle is that when no particles pass through the detection area, the light source is uniformly irradiated on the detector array all the time. As the particles to be detected pass through the detection zone shadows are formed on the detector unit via the optical system imaging. The detector unit which is shielded at any moment records and stores one image slice of the particle, so that when the particle passes through the sampling area, each image slice is sequentially stored according to the time sequence, and the image slices are synchronously combined to obtain a complete two-dimensional image of the particle. Because the high air temperature is lower in the measuring process, water mist and icing are easy to generate at the outer side of a window of the detection arm, and light propagation is influenced, so that the accuracy of a measuring result is greatly influenced.

Disclosure of Invention

The utility model aims to provide a precipitation particle imager with good deicing and defogging effects, which has a simple structure, is convenient to use and can better solve the problems.

The embodiment of the utility model is realized in the following way:

the utility model provides a precipitation particle imager with good deicing and defogging effects, which comprises a shell, two detection arms and a detection system, wherein the detection arms are arranged at the front end of the shell in a V shape, the detection system is arranged in the shell and the detection arms, a first window and a second window are respectively arranged at the inner sides of the front ends of the two detection arms, a deicing device and a defogging device are respectively arranged at the first window and the second window, the defogging device comprises a cleaning brush and a driving motor, the cleaning brush is rotatably supported at the outer sides of the first window and the second window through a rotating shaft, the driving motor is arranged in the detection arms, and an output shaft of the driving motor is connected with the rotating shaft.

Optionally, the defroster includes air heater, air cock and tuber pipe, the air heater set up in the casing, the lateral wall of casing with the corresponding position of air heater is equipped with the ventilation hole, the air cock set up in the front end of detecting the arm just be located first window with the top of second window, the one end of tuber pipe with the air-out end of air heater is connected, the other end with the air cock is connected.

Optionally, the detection system includes laser instrument, optic fibre, collimating lens, plastic lens, first speculum, second speculum, third speculum, fourth speculum, achromatic objective, microimaging objective, array detector, signal amplifier and signal processor, the one end of optic fibre with the laser instrument is connected, the other end of optic fibre is the light-emitting end, collimating lens set up in on the light-emitting path of optic fibre, the plastic lens set up in on the light-transmitting path of collimating lens, first speculum set up in on the light-transmitting path of plastic lens, the second speculum set up in on the light-reflecting path of first speculum, the third speculum set up in on the light-reflecting path of second speculum, the fourth speculum set up in on the light-reflecting path of third speculum, achromatic set up in on the light-reflecting path of fourth speculum, microimaging set up in on the light-transmitting path of optic fibre, the setting up in the microimaging microscope set up in on the light-transmitting path of image sensor signal amplifier and signal amplifier.

Optionally, an angle between the second mirror and the third mirror is 90 °.

Optionally, the laser wavelength of the laser is 635nm.

Optionally, the fiber has a core diameter of 4 μm and a numerical aperture of 0.12.

Optionally, the laser, the optical fiber, the collimating lens, the shaping lens, the first reflecting mirror are disposed in the housing, the second reflecting mirror is disposed in one of the detecting arms, the third reflecting mirror is disposed in the other of the detecting arms, the second reflecting mirror is adjacent to the first window, the third reflecting mirror is adjacent to the second window, and the achromatic objective, the microscopic imaging objective, the array detector, the signal amplifier, and the signal processor are disposed in the housing.

The beneficial effects of the utility model are as follows:

the precipitation particle imager with good deicing and defogging effects is simple in structure and convenient to use, the defogging device can prevent the outsides of the first window and the second window from fogging, and the deicing device can prevent the outsides of the first window and the second window from icing, so that the light transmittance of the windows is ensured, and the accuracy of measurement results is better ensured.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a precipitation particle imager with good deicing and defogging effects according to an embodiment of the present utility model;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

fig. 3 is a schematic diagram of a detection system.

In the figure: 11-a housing; 12-a detection arm; 131-cleaning brushes; 132-driving a motor; 141-an air heater; 142-air tap; 143-wind pipes; 151-a laser; 152-optical fiber; 153-collimating lens; 154-a shaping lens; 155-a first mirror; 156-a second mirror; 157-a third mirror; 158-fourth mirror; 159-achromatic objective; 160-microscopic imaging objective; 161-array detector; 162-signal amplifier; 163-signal processor.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.

In addition, the embodiments of the present utility model and the features of the embodiments may be combined with each other without collision.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "upper", "lower", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or directions or positional relationships conventionally put in place when the inventive product is used, or directions or positional relationships conventionally understood by those skilled in the art are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; the two components can be mechanically connected, can be directly connected or can be indirectly connected through an intermediate medium, and can be communicated with each other. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1-3, the embodiment of the utility model provides a precipitation particle imager with good deicing and mist elimination effects, which comprises a shell 11, a detection arm 12 and a detection system.

The number of the detecting arms 12 is two, the detecting arms are arranged at the front end of the shell 11 in a V shape, a first window and a second window are respectively arranged on the inner sides of the front ends of the two detecting arms 12, and deicing devices and demisting devices are respectively arranged at the first window and the second window.

The defogging device includes cleaning brush 131 and driving motor 132, and cleaning brush 131 rotates through the pivot and supports in first window and second window outside, and driving motor 132 sets up in detecting arm 12, and driving motor 132's output shaft is connected with the pivot, and driving motor 132 is used for driving cleaning brush 131 rotatory to the realization is clean the surface of first window and second window, guarantees the luminousness of first window and second window, thereby guarantees that measuring result is more accurate.

The deicing device comprises an air heater 141, an air nozzle 142 and an air pipe 143. The rear end of casing 11 is equipped with the baffle, the baffle is cut apart the inside of casing 11 into first cavity and second cavity, air heater 141 sets up in first cavity, the lateral wall of casing 11 is equipped with the ventilation hole with the corresponding position of air heater 141, ventilation hole intercommunication external world and first cavity, ventilation hole department is equipped with filter pulp, air cock 142 sets up in the front end of surveying arm 12 and is located the top of first window and second window, the one end of tuber pipe 143 is connected with the air-out end of air heater 141, the other end is connected with air cock 142, the during operation of air heater 141 can be with hot-blast from air cock 142 blowout, air cock 142 spun hot-blast falls on the surface of first window and second window and around, thereby make first window and second window outside temperature rise, be difficult for the phenomenon of freezing.

Referring to fig. 3, the detection system includes a laser 151, an optical fiber 152, a collimator lens 153, a shaping lens 154, a first mirror 155, a second mirror 156, a third mirror 157, a fourth mirror 158, an achromatic objective 159, a microimaging objective 160, an array detector 161, a signal amplifier 162, and a signal processor 163.

The laser 151, the optical fiber 152, the collimator lens 153, the shaping lens 154, the first mirror 155 are disposed in the second cavity of the housing 11, the second mirror 156 is disposed in one of the detection arms 12, the third mirror 157 is disposed in the other detection arm 12, the second mirror 156 is adjacent to the first window, the third mirror 157 is adjacent to the second window, and the achromatic objective 159, the microimaging objective 160, the array detector 161, the signal amplifier 162, and the signal processor 163 are disposed in the second cavity of the housing 11.

One end of the optical fiber 152 is connected to the laser 151, the other end of the optical fiber 152 is an optical outlet, the collimator lens 153 is disposed on an optical outlet of the optical fiber 152, the shaping lens 154 is disposed on a transmission optical path of the collimator lens 153, the first mirror 155 is disposed on a transmission optical path of the shaping lens 154, the second mirror 156 is disposed on a reflection optical path of the first mirror 155, the third mirror 157 is disposed on a reflection optical path of the second mirror 156, the fourth mirror 158 is disposed on a reflection optical path of the third mirror 157, the achromatic objective lens 159 is disposed on a reflection optical path of the fourth mirror 158, the microimaging objective lens 160 is disposed on a transmission optical path of the achromatic objective lens 159, the array detector 161 is signal-connected to the signal amplifier 162, and the signal amplifier 162 is signal-connected to the signal processor 163.

In this embodiment, the laser 151 has a laser wavelength of 635nm and a maximum output power of 30mW. The core diameter of the fiber 152 is 4 μm and the numerical aperture is 0.12. The angle between the second mirror 156 and the third mirror 157 is 90 °. The array detector 161 is a 64×1 linear array photodetector.

The laser beam emitted by the laser 151 is transmitted forward through the optical fiber 152 and enters the collimating lens 153, the collimating lens 153 transmits the processed light beam out into the shaping lens 154, the shaping lens 154 shapes the light beam into a light beam with uniform intensity, the light beam is transmitted out and then enters the first reflecting mirror 155, the first reflecting mirror 155 reflects the light beam and enters the second reflecting mirror 156, the second reflecting mirror 156 reflects the light beam and transmits the light beam out of the first window to irradiate a sampling area, a part of the light beam is blocked by cloud particles in the sampling area, the light beam which is not blocked enters the third reflecting mirror 157 from the second window, the third reflecting mirror 157 reflects the light beam into the fourth reflecting mirror 158, the fourth reflecting mirror 158 reflects the light beam into the achromatic objective 159, the scattered light beam is converged by the achromatic objective 159, the converged light beam enters the microimaging objective 160, and the microimaging objective 160 is used for amplifying the cloud particles and imaging the array detector 161, and the image spots are clear. The 64-element one-dimensional linear array detector 161 adopts a parallel output mode, each unit detector synchronously outputs signals, the response time of the unit detector is less than 100ns, and the high-speed detection requirement of cloud particles can be met. In order to eliminate the influence of particles passing from the edge of the sampling area, the 1 st and 64 th detection units are not used to calculate the size of the particles, so that there are a total of 62 effective detection units, the resolution of which is 100 μm, and the maximum detectable diameter of which is 100-6200 μm. The array detector 161 has a certain scale for each detection unit, the size of the particle can be obtained by calculating the number of units shielded by shadow, the quantification standard for whether the detection unit is shielded or not is set to be 50% of the area of the detection unit which is shielded, and the detection unit is equal to or higher than the standard, namely the detection unit is considered to be shielded, so that the influence of the shadow generated by small particles with insufficient scale on measurement is filtered out to a certain extent. When no cloud particles pass through the sampling area, laser light always irradiates the array detector 161, and each unit outputs a direct current signal. When the cloud particles pass through the beam sampling area, as part of the beam is blocked, each unit of the array detector 161 outputs a pulse signal according to the blocking condition, and the pulse waveform obtained by combining each unit is related to the size of the particles. Each path of signals is amplified by a signal amplifier 162 and then sent to a signal processor 163 for digital processing, corresponding calculation is carried out by a signal processing circuit in the FPGA, the sizes of particles are calculated, the particles with different sizes are classified into different particle size channels, and 62 particle size channels are arranged according to the number of detection units. During signal processing, two-dimensional image information of particles is obtained by combining signals at all moments and is temporarily stored in a memory. After the prescribed acquisition time is reached, the signal processor 163 transmits the statistical distribution of particles and the two-dimensional image data to an onboard control computer via a serial port for display.

The utility model is not limited to the above-described alternative embodiments, and any person who may derive other various forms of products in the light of the present utility model, however, any changes in shape or structure thereof, all falling within the technical solutions defined in the scope of the claims of the present utility model, fall within the scope of protection of the present utility model.

Claims

1. Precipitation particle imager that deicing defogging is effectual, its characterized in that: the device comprises a shell, two detection arms and a detection system, wherein the two detection arms are arranged at the front end of the shell in a V shape, the detection system is arranged in the shell and the detection arms, a first window and a second window are respectively arranged at the inner sides of the front ends of the two detection arms, deicing devices and demisting devices are respectively arranged at the first window and the second window, the demisting devices comprise cleaning brushes and driving motors, the cleaning brushes are rotatably supported at the outer sides of the first window and the second window through rotating shafts, the driving motors are arranged in the detection arms, an output shaft of each driving motor is connected with the rotating shafts, the deicing devices comprise air heaters, air nozzles and air pipes, the air heaters are arranged in the shell, vent holes are formed in the positions, corresponding to the air heaters, of the side walls of the shell, the air nozzles are arranged at the front ends of the detection arms and are positioned above the first window and the second window, one ends of the air pipes are connected with the air outlet ends of the air heaters, and the other ends of the air nozzles are connected with the air nozzles; the detection system comprises a laser, an optical fiber, a collimating lens, a shaping lens, a first reflecting mirror, a second reflecting mirror, a third reflecting mirror, a fourth reflecting mirror, an achromatic objective, a microscopic imaging objective, an array detector, a signal amplifier and a signal processor, wherein one end of the optical fiber is connected with the laser, the other end of the optical fiber is an light-emitting end, the collimating lens is arranged on the light-emitting path of the optical fiber, the shaping lens is arranged on the transmission light path of the collimating lens, the first reflecting mirror is arranged on the transmission light path of the shaping lens, the second reflecting mirror is arranged on the reflection light path of the first reflecting mirror, the third reflecting mirror is arranged on the reflection light path of the second reflecting mirror, the fourth reflecting mirror is arranged on the reflection light path of the third reflecting mirror, the achromatic imaging lens is arranged on the reflection light path of the fourth reflecting mirror, the microscopic imaging lens is arranged on the transmission light path of the achromatic lens, the second reflecting mirror is arranged on the signal amplifier, and the signal amplifier is connected with the signal amplifier.

2. A precipitation particle imager with good deicing and mist elimination effects as claimed in claim 1, wherein: the included angle between the second reflecting mirror and the third reflecting mirror is 90 degrees.

3. A precipitation particle imager with good deicing and mist elimination effects as claimed in claim 1, wherein: the laser wavelength of the laser is 635nm.

4. A precipitation particle imager with good deicing and mist elimination effects as claimed in claim 1, wherein: the core diameter of the optical fiber is 4 μm, and the numerical aperture is 0.12.

5. A precipitation particle imager with good deicing and mist elimination effects as claimed in claim 1, wherein: the laser, the optical fiber, the collimating lens, the shaping lens and the first reflecting mirror are arranged in the shell, the second reflecting mirror is arranged in one detecting arm, the third reflecting mirror is arranged in the other detecting arm, the second reflecting mirror is adjacent to the first window, the third reflecting mirror is adjacent to the second window, and the achromatic objective, the microscopic imaging objective, the array detector, the signal amplifier and the signal processor are arranged in the shell.