A webbing prevention device for an optical monitoring instrument and method of use thereof

Abstract

The present application relates to a kind of anti-netting device for optical monitoring instrument and its use method applied to the field of optical instrument, first by high frequency and low frequency two kinds of mechanical waves, interfere with the outside biological perception, so that optical detection area is not easy to exist biological aggregation and netting phenomenon, improve the visibility monitoring accuracy of the present application, second, when the current monitoring result of visibility instrument body is obviously not in line with the expected situation or adjacent two monitoring data exist mutation condition, all accuracy detection operation is carried out to visibility instrument body, pure gas is effectively replaced with original atmosphere at optical detection area, then by the visibility detection of pure gas, when monitoring result is obviously lower than standard result, it can be further determined that optical detection area exists netting condition, visibility instrument body is in monitoring distortion state, monitoring management background sends distortion early warning, so that personnel timely carries out on-site cleaning processing, effectively restores the monitoring accuracy of the present application.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of optical instruments, in particular to a device for preventing webbing for optical monitoring instruments and a method of using the same. BACKGROUND

[0002] The visibility instrument is an instrument for obtaining the distance of visual observation in the atmosphere by measuring the atmospheric extinction coefficient according to the empirical formula, mainly including a receiver, a transmitter and a control processor, etc. The visibility instrument is divided into two types of perspective and scattering. The former determines the visibility distance through the atmospheric transmittance or extinction coefficient, and the latter determines the visibility distance by measuring the intensity of scattered light caused by gas molecules, aerosol particles, fog droplets, etc. in a certain volume of air.

[0003] As disclosed in the specification of Chinese patent CN209372691U, a forward scattering type visibility instrument device with insect prevention function is disclosed, which comprises a support column, a solar panel and a transmitter. The lower end of the support column is provided with a fixing foot, the lower part of the right end of the support column is provided with a collector case, the upper part of the right end of the support column is provided with a support frame, the upper end of the support frame is provided with a solar panel, the upper side of the support frame is provided with a fixing seat on the support column, the fixing seat is connected with the mounting seat through a support rod, and the mounting seat is slidingly connected with the support rod. When the device is used, the transmitter and the shroud type radiator are both provided with an insect prevention box. The inner box is taken out, an appropriate amount of camphor pills is put in, and then the inner box is put back. The inner box is fixed through the cooperation of the limiting block and the spring catch, which is beneficial to the fixation of the insect prevention box and the prevention of insects for the equipment, and is convenient for long-term use of the equipment.

[0004] When the existing visibility instrument is used outdoors, the monitoring data is often inaccurate due to the existence of sundries (such as spider webs) near the lenses of the receiver and the transmitter. SUMMARY

[0005] In view of the above prior art, the technical problem to be solved by the present application is that the existing visibility instrument often has inaccurate monitoring data due to the existence of sundries (such as spider webs) near the lenses of the receiver and the transmitter.

[0006] To solve the above problems, the present application provides a kind of for optical monitoring instrument anti-networking device, including hardware components and monitoring management background, hardware components include the visibility instrument body of installation on stand and optical emission end and optical receiving end of installation on visibility instrument body, the inside fixed mounting of visibility instrument body has ultrasonic transducer and micro vibration motor, the present application further includes flat plate and device box, device box is located the downside of visibility instrument body and its side end is fixedly connected with stand, flat plate is located the upside of device box, optical emission end and optical receiving end are fixedly penetrated the inside of flat plate and extend to its downside, the lower end of flat plate is fixedly connected with isolator, a pair of side ends of isolator are fixedly connected with side plate, the inside of device box is fixedly connected with a pair of electric push rods, the telescopic end of a pair of electric push rods is fixedly penetrated device box and is respectively fixedly connected with the lower end of side plate;

[0007] A plurality of groups of thin rods are fixedly connected between the device box and the flat plate, and each group of thin rods has a pair of thin rods.

[0008] An inner cavity is formed in the inside of the device box, one inner wall of the inner cavity is fixedly connected with a flexible sleeve, and an air cavity is formed between the flexible sleeve and the inner wall of the inner cavity, the air cavity is filled with pure gas, the inside of the device box is further fixedly connected with a first air pump and a second air pump, the air inlet end of the first air pump penetrates the inside of the device box and is in communication with the air cavity, the air outlet end of the first air pump penetrates the device box upwardly and is fixedly connected with a gas guide pipe, the air inlet end of the second air pump penetrates the device box upwardly and is in communication with the outside, and the air outlet end of the second air pump penetrates the side end of the device box laterally and is in communication with the outside.

[0009] As a further supplement to the present application, the isolator includes a back-shaped plate and an outer soft sleeve, the upper end of the outer soft sleeve is fixedly connected with the lower end of the flat plate, and the lower end of the outer soft sleeve is fixedly connected with the upper end of the back-shaped plate.

[0010] As a further supplement to the present application, a back-shaped groove is formed in the upper end of the device box, the ejector includes a thin plate, an inner soft sleeve and an air cylinder, the thin plate is located on the upside of the device box, the inner soft sleeve is located in the inside of the back-shaped groove, and the inner soft sleeve is fixedly connected between the lower end of the thin plate and the inner bottom surface of the back-shaped groove, the air cylinder is fixedly connected in the inside of the device box, and the telescopic end of the air cylinder penetrates the device box upwardly and is fixedly connected with the lower end of the thin plate.

[0011] As a further supplement to the present application, when the outer soft sleeve is attached to the upper end surface of the device box, the gas guide pipe, the thin plate and the air inlet port of the second air pump are all located on the inside of the back-shaped plate.

[0012] As a further supplement to the present application, a first air hole is formed in the inner wall of the inner cavity and is in communication with the outside, the inside of the first air hole is fixedly connected with an upper filter screen, and the first air hole is not in communication with the air cavity.

[0013] As a further improvement of the present application, the lower side of the device box is provided with a liquid storage tank, which comprises a tank body fixedly connected with the stand, and a piston plate slidably connected inside the tank body, one side of the piston plate being filled with exhaust liquid.

[0014] As a further improvement of the present application, the upper end of the liquid storage tank is fixedly connected with a liquid pump, one port of the liquid pump being fixedly connected with a first liquid pipe, the end of the first liquid pipe away from the liquid pump being fixedly penetrated through the device box from bottom to top and extending to the upper end face thereof, the other port of the liquid pump being fixedly connected with a second liquid pipe, the end of the second liquid pipe away from the liquid pump being fixedly penetrated through the tank body and extending to the inside of the exhaust liquid.

[0015] As a further improvement of the present application, the inner wall of the tank body not in contact with the exhaust liquid is provided with a second air hole communicating with the outside, and the inside of the second air hole is fixedly connected with a lower filter screen.

[0016] As a further improvement of the present application, the intake port of the second air pump is fixedly connected with an extension pipe, and the upper port of the extension pipe is close to the lower end face of the flat plate.

[0017] A method for preventing netting of an optical monitoring instrument, comprising the following steps:

[0018] S1, intermittent anti-netting: intermittently starting the ultrasonic transducer and the micro vibration motor, interfering with the perception of external organisms by mechanical waves of two different frequencies, high frequency and low frequency, so that external organisms are not easy to gather and net in the optical detection area;

[0019] S2, when any of the following conditions occurs, step S3 is performed: condition one, according to the current weather forecast information issued by the meteorological bureau, the monitoring management background compares and analyzes the current monitoring results of the visibility instrument body, and the visibility instrument body monitoring result is significantly lower than the expected data; condition two, the monitoring management background compares the continuous monitoring data of the visibility instrument body in the previous T time period, and the difference between the adjacent two monitoring data exceeds the normal range;

[0020] S3, accuracy detection:

[0021] S3-1, start the electric push rod to drive the isolation piece to move downward until it is attached to the upper end face of the device box, then start the air cylinder and the second air pump to drive the thin plate to move upward with the inner sleeve by a fixed distance, and the second air pump draws the original atmosphere inside the isolation piece;

[0022] S3-2, close the cylinder and start the liquid pump, inject the exhaust liquid between the ejection piece and the isolation piece, the second air pump extracts the original atmosphere inside the isolation piece, and then reversely starts the liquid pump and the cylinder, the liquid pump extracts the exhaust liquid inside the isolation piece, the cylinder drives the thin plate and the inner soft sleeve to reset downward, at the same time, the second air pump is closed, the first air pump is started, and the pure gas is filled into the inside of the isolation piece;

[0023] S3-3, the monitoring result of the visibility instrument body to the gas in the isolation piece is obtained, which is compared with the standard result, when the difference between the two is within the allowable range, it is determined that there is no netting in the optical detection area, otherwise, when the difference between the two exceeds the allowable range, it is determined that there is netting in the optical detection area, that is, the monitoring result of the visibility instrument body is distorted.

[0024] In summary, the present application firstly sets the ultrasonic transducer and the micro vibration motor to generate mechanical waves of two different frequencies of high frequency and low frequency, interfere with the perception of external organisms, so that the optical detection area of the visibility instrument body is not easy to have biological aggregation and netting phenomenon, and the visibility monitoring accuracy of the present application is improved, secondly, when the current monitoring result of the visibility instrument body is obviously inconsistent with the expected situation or there is a mutation in the adjacent two monitoring data, the accuracy of the visibility instrument body is detected, the original atmosphere in the optical detection area is effectively replaced by pure gas, and then the visibility of the pure gas is detected, when the monitoring result is obviously lower than the standard result, it can be further determined that the optical detection area exists netting, the visibility instrument body is in a monitoring distortion state, and the monitoring management background sends a distortion warning of the visibility instrument body, so that the staff can go to the site of the visibility instrument body in time for cleaning treatment, and effectively restore the monitoring accuracy of the visibility instrument body. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a perspective view of the first and second embodiments of the present application in normal optical monitoring Figure 1 ;

[0026] Figure 2 is a perspective view of the first and second embodiments of the present application in normal optical monitoring Figure 2 ;

[0027] Figure 3 is a perspective view of the first and second embodiments of the present application in normal optical monitoring Figure 3 ;

[0028] Figure 4 is a perspective view of the first and second embodiments of the present application in normal optical monitoring

[0029] Figure 5 is a perspective view of the first and second embodiments of the present application in normal optical monitoring

[0030] Figure 6 Front view of the first and second embodiments of the present application when normal optical monitoring is performed;

[0031] Figure 7 Front view of the first and second embodiments of the present application when the spacer and the ejector move;

[0032] Figure 8 Front view of the first and second embodiments of the present application when the ejector moves to the highest position;

[0033] Figure 9 Front view of the first and second embodiments of the present application when pure gas is injected;

[0034] Figure 10 Front view of the first and second embodiments of the present application when accuracy detection is performed;

[0035] Figure 11 Front view of the second embodiment of the present application when exhaust liquid is injected;

[0036] Figure 12 Front view of the second embodiment of the present application when the extension pipe is arranged.

[0037] Explanation of the reference numerals in the drawings:

[0038] 1 visibility meter body, 101 optical emission end, 102 optical receiving end, 2 flat plate, 3 device box, 301 inner cavity, 302 back-shaped groove, 4 ejector, 41 thin plate, 42 inner soft sleeve, 43 air cylinder, 5 spacer, 51 back-shaped plate, 52 outer soft sleeve, 6 thin rod, 7 side plate, 8 electric push rod, 9 air guide pipe, 10 first air pump, 11 second air pump, 12 flexible sleeve, 13 upper filter screen, 14 liquid storage tank, 1401 tank body, 1402 piston plate, 15 liquid pump, 1501 first liquid pipe, 1502 second liquid pipe, 16 lower filter screen, 17 extension pipe. DETAILED DESCRIPTION

[0039] The two embodiments of the present application will be described in detail below with reference to the drawings.

[0040] First embodiment:

[0041] The present application provides an anti-netting device for an optical monitoring instrument, please refer to Figure 1 , including hardware components and monitoring management background, hardware components including installed on the column visibility meter body 1 and installed on the visibility meter body 1 optical emission end 101 and optical receiving end 102, combined Figure 6As shown, the visibility instrument body 1, the optical emitting end 101 and the optical receiving end 102 are three components of the scattering visibility measuring instrument, and the scattering coefficient can be obtained by measuring the scattering light intensity in the sampling space, and then the atmospheric visibility can be obtained. Since the above structure and principle are prior art, no further description is given here.

[0042] The ultrasonic transducer can apply 20kHz-60kHz high-frequency ultrasonic waves to the periphery of the visibility instrument body 1, and the miniature vibration motor can apply 50Hz-200Hz low-frequency mechanical vibration waves. The two work intermittently, which can effectively interfere with the spider sensing system and effectively reduce the webbing and gathering of spiders in the optical detection area and in front of the lenses of the optical emitting end 101 and the optical receiving end 102.

[0043] Please refer to Figure 1 and Figure 2 , the present application also includes a flat plate 2 and a device box 3, the device box 3 is located on the lower side of the visibility instrument body 1 and its side end is fixedly connected with the stand, the flat plate 2 is located on the upper side of the device box 3, the optical emitting end 101 and the optical receiving end 102 are fixedly penetrated through the inside of the flat plate 2 and extend to its lower side, the lower end of the flat plate 2 is fixedly connected with a partition 5, a pair of side plates 7 are fixedly connected with a pair of side ends of the partition 5, the inside of the device box 3 is fixedly connected with a pair of electric push rods 8, the extension ends of the pair of electric push rods 8 are movably penetrated through the device box 3 and are respectively fixedly connected with the lower ends of the side plates 7, through the starting of the electric push rods 8, the side plates 7 and the partition 5 can be driven to move upward or downward (as shown in Figure 4 and Figure 7 ).

[0044] As shown in Figure 1 and Figure 5 , in the initial state, the partition 5 and the side plates 7 are located close to the flat plate 2 under the support of the electric push rods 8, the partition 5 is in the contracted state, and the ejector 4 is located close to the device box 3, so that the external atmosphere can freely enter the optical detection area (the optical detection area is located on the upper side of the ejector 4) on the lower side of the partition 5, so that the optical emitting end 101 and the optical receiving end 102 can normally emit and receive light sources to monitor the atmospheric visibility.

[0045] Combined with Figure 3 , Figure 4 and Figure 6As shown, the isolating piece 5 includes a backplate 51 and an outer sleeve 52, the upper end of the outer sleeve 52 is fixedly connected with the lower end of the flat plate 2, the lower end of the outer sleeve 52 is fixedly connected with the upper end of the backplate 51, a plurality of groups of thin rods 6 are fixedly connected between the device box 3 and the flat plate 2, and the number of thin rods 6 in each group is a pair, the isolating piece 5 is slidingly connected between the pair of thin rods 6, the upper end of the device box 3 is connected with the ejector 4, the ejector 4 is located between the areas formed by the plurality of groups of thin rods 6, and each group of thin rods 6 plays a limiting role on the isolating piece 5. Since the outer sleeve 52 has a flexible feature, when the electric push rod 8 pushes the isolating piece 5 and the side plate 7 to move upward, the outer sleeve 52 is in a stacked state, so that the outer sleeve 52 in the stacked state can be stably clamped between each group of thin rods 6 by the limiting action of the thin rods 6, and it is not easy to fall downward beyond the inner end edge or the outer side edge of the backplate 51.

[0046] In combination Figure 3 and Figure 6 As shown, the inside of the device box 3 is provided with an inner cavity 301, one inner wall of the inner cavity 301 is fixedly connected with a flexible sleeve 12, and an air cavity is formed between the flexible sleeve 12 and the inner wall of the inner cavity 301, the air cavity is filled with pure gas, and the inside of the device box 3 is further fixedly connected with a first air pump 10 and a second air pump 11, the air inlet end of the first air pump 10 penetrates the inside of the device box 3 and communicates with the air cavity, the air outlet end of the first air pump 10 penetrates the device box 3 upward and is fixedly connected with a gas guide pipe 9, and the air inlet end of the second air pump 11 penetrates the device box 3 upward and communicates with the outside, and the air outlet end of the second air pump 11 penetrates the side end of the device box 3 transversely and communicates with the outside.

[0047] In combination Figure 5 , Figure 7 and Figure 8 As shown, the upper end of the device box 3 is provided with a back-shaped groove 302, the ejector 4 includes a thin plate 41, an inner sleeve 42 and a gas cylinder 43, the thin plate 41 is located on the upper side of the device box 3, the inner sleeve 42 is located inside the back-shaped groove 302, and the inner sleeve 42 is fixedly connected between the lower end of the thin plate 41 and the inner bottom surface of the back-shaped groove 302, the gas cylinder 43 is fixedly connected inside the device box 3, and the telescopic end of the gas cylinder 43 penetrates the device box 3 upward and is fixedly connected with the lower end center position of the thin plate 41, in the initial state, the gas cylinder 43 is in the contracted state, the flexible inner sleeve 42 is accumulated inside the back-shaped groove 302, and the thin plate 41 is attached to the upper end surface of the device box 3, so that the thin plate 41 is located on the lower side of the optical detection area, and it is not easy to affect the use of the optical emitting end 101 and the optical receiving end 102.

[0048] When the outer sleeve 52 is attached to the upper end face of the device box 3, the air duct 9, the sheet 41 and the air inlet port of the second air pump 11 are all located on the inner side of the backplate 51, and the air duct 9 and the air inlet port of the second air pump 11 are both located on one side of the sheet 41, so that the air duct 9 is not easy to hinder the up-and-down movement of the sheet 41, and the sheet 41 is not easy to block the air inlet port of the second air pump 11. The inner sleeve 42 and the outer sleeve 52 are both made of flexible material that is waterproof and airproof, such as plastic film.

[0049] The inner wall of the inner cavity 301 is provided with a first air hole communicating with the outside, and the inside of the first air hole is fixedly connected with the upper filter screen 13. The first air hole is not communicated with the air cavity. When the flexible sleeve 12 loses gas and its volume becomes small, the outside gas can enter the inner cavity 301 through the first air hole, so as to maintain the balance of the inner cavity 301. The upper filter screen 13 can prevent the outside organisms from entering the inner cavity 301 and damaging the flexible sleeve 12, and prevent the pure gas from leaking.

[0050] A method for preventing netting of an optical monitoring instrument comprises the following steps:

[0051] S1, intermittent anti-netting: intermittently starting the ultrasonic transducer and the micro vibration motor, interfering with the perception of the outside organisms by mechanical waves of two different frequencies, so that the outside organisms are not easy to gather and net in the optical detection area;

[0052] S2, when any of the following conditions occurs, step S3 is performed: condition one, according to the current weather forecast information issued by the meteorological bureau, the monitoring management background compares and analyzes the current monitoring result of the visibility instrument body 1, and the monitoring result of the visibility instrument body 1 is significantly lower than the expected data; condition two, the monitoring management background compares the continuous monitoring data of the visibility instrument body 1 in the previous T time period (such as the previous 1 hour), and the difference between the adjacent two monitoring data exceeds the normal range;

[0053] The two conditions of step S2 are described in detail as follows:

[0054] Condition one, when the current weather forecast information issued by the meteorological bureau is sunny and windless, according to the pre-stored historical monitoring data, the expected monitoring data at this time should be visibility A, and the current monitoring result of the visibility instrument body 1 at this time is visibility B. When the difference between visibility A and visibility B is greater than the running threshold C, it is evaluated that the monitoring result of the visibility instrument body 1 is significantly lower than the expected data, which indicates that there may be dust, impurities, spider netting and other substances in the optical detection area, which affect the monitoring result.

[0055] Case two, generally speaking, the change of atmospheric visibility is relatively slow, therefore, when the difference between two adjacent monitoring data exceeds the normal range, it indicates that the monitoring results of the previous and the next time have changed suddenly, which to some extent also indicates the possibility that the detection results are affected by impurities;

[0056] Therefore, based on the above possible cases, further detection operation of step S3 can be selected to further verify the above possible cases;

[0057] S3, accuracy detection:

[0058] S3-1, please refer to Figure 7 , start the electric push rod 8, drive the isolation piece 5 to move downward until it is attached to the upper end surface of the device box 3, then start the air cylinder 43 and the second air pump 11, drive the thin plate 41 and the inner soft sleeve 42 to move upward, and the second air pump 11 draws the original atmosphere inside the isolation piece 5;

[0059] S3-2, please refer to Figure 9 , reverse start the air cylinder 43, the air cylinder 43 drives the thin plate 41 and the inner soft sleeve 42 to reset downward, at the same time, close the second air pump 11, start the first air pump 10, and fill pure gas into the inside of the isolation piece 5, the pure gas mixes with the residual atmosphere in the isolation piece 5 to form a mixed gas with high purity;

[0060] S3-3, please refer to Figure 10 , obtain the monitoring result of the visibility instrument body 1 on the mixed gas in the isolation piece 5, and compare it with the standard result, when the difference between the two is within the allowable range, it is determined that there is no netting in the optical detection area, otherwise, when the difference between the two exceeds the allowable range, it is determined that there is netting in the optical detection area, that is, the monitoring result of the visibility instrument body 1 is distorted.

[0061] The functions of steps S3-1 and S3-2 are to replace the original atmosphere in the optical detection area with pure gas to the greatest extent. Specifically, first, the rising of the ejector 4 occupies most of the space inside the isolation piece 5, and most of the original atmosphere is discharged. The extension length of the air cylinder 43 is pre-set by the person skilled in the art, so that the ejector 4 moves to the lower end close to the optical emission end 101 and the optical receiving end 102. At this time, only the area between the ejector 4 and the isolation piece 5 remains the original atmosphere. Then the ejector 4 is reset downward, and pure gas is filled into the isolation piece 5. The starting rate and time of the first air pump 10 are pre-set by the person skilled in the art, so that the injected pure gas occupies the space position of the ejector 4 and mixes with the residual original atmosphere. Since the content of the residual original atmosphere is small, the purity of the mixed gas in the isolation piece 5 is still high;

[0062] Normally, if the lenses of the optical transmitting end 101 and the optical receiving end 102 are not webbed, the monitoring result of the mixed gas should tend to be the standard result, that is, the difference between the two is within the allowable range. On the contrary, if the lenses of the optical transmitting end 101 and the optical receiving end 102 are webbed, the monitoring result will be significantly lower than the standard result, that is, the difference between the two exceeds the operating range. Therefore, according to the monitoring result of the mixed gas in the isolation piece 5, it can be further determined whether there is a webbing condition. If it is determined that there is a webbing condition, the distortion warning of the visibility instrument body 1 is sent by the monitoring management background, so that the staff can go to the site where the visibility instrument body 1 is located in time to clean and process, and effectively restore the monitoring accuracy of the visibility instrument body 1.

[0063] The second embodiment:

[0064] The embodiment adds the following structure on the basis of the first embodiment, which can further improve the purity of the mixed gas in the isolation piece 5 in S3-2. Specifically, please refer to Figure 3 and Figure 11 The lower side of the device box 3 is provided with a liquid storage tank 14, which includes a tank body 1401 fixedly connected with the stand column. The inside of the tank body 1401 is slidably connected with a piston plate 1402. One side of the piston plate 1402 is filled with exhaust liquid. The exhaust liquid can use perfluorohexone. Perfluorohexone is a colorless, odorless and transparent liquid at room temperature, and is safe, insulating and non-toxic.

[0065] The upper end of the liquid storage tank 14 is fixedly connected with a liquid pump 15. One port of the liquid pump 15 is fixedly connected with a first liquid pipe 1501. The end of the first liquid pipe 1501 away from the liquid pump 15 is fixedly penetrated through the device box 3 from bottom to top and extends to the upper end face thereof. The other port of the liquid pump 15 is fixedly connected with a second liquid pipe 1502. The end of the second liquid pipe 1502 away from the liquid pump 15 is fixedly penetrated through the tank body 1401 and extends to the inside of the exhaust liquid. The inner wall of the tank body 1401 not in contact with the exhaust liquid is provided with a second air hole in communication with the outside. The inside of the second air hole is fixedly connected with a lower filter screen 16. The second air hole is used to maintain the air pressure balance in the tank body 1401. The lower filter screen 16 makes it difficult for external organisms to enter the tank body 1401 through the second air hole.

[0066] Through the above structure, the following operation can be performed between step S3-1 and step S3-2: close the air cylinder 43 and start the liquid pump 15, so that the ejection piece 4 remains in the extended state as shown in Figure 8 , and then Figure 11As shown, the exhaust liquid in the box 1401 is extracted by the liquid pump 15, and is injected into the ejector 4 and the isolation member 5. The second air pump 11 extracts the original atmosphere inside the isolation member 5, so that the exhaust liquid occupies the space position of the residual atmosphere, and further reduces the content of the residual atmosphere. The starting rate and time of the liquid pump 15 are also pre-set by the person skilled in the art, so that the liquid level of the injected exhaust liquid approaches the lower end position of the optical transmitting end 101 and the optical receiving end 102. Then, the liquid pump 15 is started in reverse, and the exhaust liquid inside the isolation member 5 is extracted. At the same time, step S3-2 is performed.

[0067] Since the residual original atmosphere is further exhausted by the exhaust liquid, the purity of the mixed gas in the isolation member 5 is higher in the present embodiment, so that the monitoring result of the visibility instrument body 1 on the mixed gas in the isolation member 5 is closer to the standard result, thereby further improving the judgment accuracy of the step S3 accuracy detection.

[0068] Please refer to Figure 12 To adapt to the above structure and operation, the present embodiment is fixedly connected with an extension pipe 17 at the air inlet port of the second air pump 11. The upper end of the extension pipe 17 is close to the lower end surface of the flat plate 2. The liquid level of the exhaust liquid injected into the isolation member 5 should be lower than the upper end of the extension pipe 17. During the process of injecting the exhaust liquid into the isolation member 5, the exhaust liquid is not easy to enter the air inlet port of the second air pump 11, and is not easy to affect the process of extracting the residual atmosphere in the isolation member 5 by the second air pump 11. That is, when the second air pump 11 extracts the residual atmosphere in the isolation member 5, the exhaust liquid is not easy to be extracted into the second air pump 11.

[0069] In combination with the current actual demand, the above-mentioned embodiments adopted by the present application are not limited to this, and various changes made within the knowledge range of the person skilled in the art without departing from the concept of the present application still fall within the protection scope of the present application.

Claims

1. A device for preventing netting for optical monitoring instrument, comprising a hardware component and a monitoring management background, the hardware component comprises an optical visibility instrument body (1) installed on a stand column and an optical transmitting end (101) and an optical receiving end (102) installed on the optical visibility instrument body (1), an ultrasonic transducer and a micro vibration motor are fixedly installed in the interior of the optical visibility instrument body (1), characterized in that: It also includes a flat plate (2) and device box (3), the device box (3) is located on the lower side of the visibility instrument body (1) and its side end is fixedly connected with the stand, the flat plate (2) is located on the upper side of the device box (3), the optical transmitting end (101) and the optical receiving end (102) are fixedly penetrated through the inside of the flat plate (2) and extend to its lower side, the lower end of the flat plate (2) is fixedly connected with a spacer (5), a pair of side plates (7) are fixedly connected with a pair of side ends of the spacer (5), a pair of electric push rods (8) are fixedly connected in the inside of the device box (3), the telescopic ends of the pair of electric push rods (8) are movably penetrated through the device box (3) and are fixedly connected with the lower ends of the side plates (7) respectively; A plurality of groups of thin rods (6) are fixedly connected between the device box (3) and the flat plate (2), and the number of each group of thin rods (6) is a pair, the spacer (5) is slidably connected between the pair of thin rods (6), the upper end of the device box (3) is connected with an ejection member (4), and the ejection member (4) is located between the areas formed by the plurality of groups of thin rods (6). An inner cavity (301) is formed in the inside of the device box (3), one inner wall of the inner cavity (301) is fixedly connected with a flexible sleeve (12), an air cavity is formed between the flexible sleeve (12) and the inner wall of the inner cavity (301), the inside of the air cavity is filled with pure gas, and a first air pump (10) and a second air pump (11) are fixedly connected in the inside of the device box (3), the air inlet end of the first air pump (10) is penetrated through the inside of the device box (3) and is in communication with the air cavity, the air outlet end of the first air pump (10) is upwardly penetrated through the device box (3) and is fixedly connected with a gas guide pipe (9), the air inlet end of the second air pump (11) is upwardly penetrated through the device box (3) and is in communication with the outside, and the air outlet end of the second air pump (11) is transversely penetrated through the side end of the device box (3) and is in communication with the outside.

2. A net-preventing device for an optical monitoring instrument according to claim 1, characterized in that: The spacer (5) comprises a back-shaped plate (51) and an outer soft sleeve (52), the upper end of the outer soft sleeve (52) is fixedly connected with the lower end of the flat plate (2), and the lower end of the outer soft sleeve (52) is fixedly connected with the upper end of the back-shaped plate (51).

3. A net-preventing device for an optical monitoring instrument according to claim 2, characterized in that: The upper end of the device box (3) is provided with a back-shaped groove (302), the ejection member (4) comprises a thin plate (41), an inner soft sleeve (42) and an air cylinder (43), the thin plate (41) is located on the upper side of the device box (3), the inner soft sleeve (42) is located in the inside of the back-shaped groove (302), the inner soft sleeve (42) is fixedly connected between the lower end of the thin plate (41) and the inner bottom surface of the back-shaped groove (302), and the air cylinder (43) is fixedly connected in the inside of the device box (3), and the telescopic end of the air cylinder (43) is movably penetrated through the device box (3) and is fixedly connected with the lower end center position of the thin plate (41).

4. A webbing prevention device for an optical monitoring instrument according to claim 3, characterized in that: When the outer soft sleeve (52) is attached to the upper end surface of the device box (3), the gas guide pipe (9), the thin plate (41) and the air inlet port of the second air pump (11) are all located on the inside of the back-shaped plate (51).

5. A webbing prevention device for an optical monitoring instrument according to claim 1, characterized in that: The inner wall of the inner cavity (301) is provided with a first air hole in communication with the outside, and the inside of the first air hole is fixedly connected with an upper filter screen (13).

6. A webbing prevention device for an optical monitoring instrument according to claim 3, characterized in that: The lower side of the device box (3) is provided with a liquid storage tank (14), and the liquid storage tank (14) comprises a tank body (1401) fixedly connected with the stand column.

7. A webbing prevention device for an optical monitoring instrument according to claim 6, characterized in that: The upper end of the liquid storage tank (14) is fixedly connected with a liquid pump (15), one port of the liquid pump (15) is fixedly connected with a first liquid pipe (1501), the end of the first liquid pipe (1501) away from the liquid pump (15) is fixedly penetrated through the device box (3) from bottom to top and extends to the upper end face thereof, the other port of the liquid pump (15) is fixedly connected with a second liquid pipe (1502), and the end of the second liquid pipe (1502) away from the liquid pump (15) is fixedly penetrated through the tank body (1401) and extends to the inside of the exhaust liquid.

8. A webbing prevention device for an optical monitoring instrument according to claim 6, characterized in that: The inner wall of the tank body (1401) not in contact with the exhaust liquid is provided with a second air hole in communication with the outside, and the inside of the second air hole is fixedly connected with a lower filter screen (16).

9. A webbing prevention device for an optical monitoring instrument according to claim 1, characterized in that: The gas inlet port of the second air pump (11) is fixedly connected with an extension pipe (17), and the upper port of the extension pipe (17) is close to the lower end face of the flat plate (2).

10. A webbing prevention device for an optical monitoring instrument according to claim 7, characterized in that: The use method thereof comprises the following steps: S1, intermittent anti-netting: intermittently starting the ultrasonic transducer and the micro vibration motor, interfering with the perception of external organisms through mechanical waves of two different frequencies, so that external organisms are not easy to gather and net in the optical detection area; S2, when any of the following conditions occurs, step S3 is performed: condition one, according to the current weather forecast information issued by the meteorological bureau, the monitoring management background compares and analyzes the current monitoring results of the visibility instrument body (1), and the monitoring result of the visibility instrument body (1) is significantly lower than the expected data; condition two, the monitoring management background compares the continuous monitoring data of the visibility instrument body (1) in the previous T time period, and the difference between the adjacent two monitoring data exceeds the normal range; S3, accuracy detection: S3-1, start the electric push rod (8), drive the isolation piece (5) to move downward until it is attached to the upper end face of the device box (3), then start the air cylinder (43) and the second air pump (11), drive the thin plate (41) to move upward with the inner soft sleeve (42), and the second air pump (11) draws the original atmosphere inside the isolation piece (5); S3-2, close the air cylinder (43) and start the liquid pump (15), inject the exhaust liquid between the ejection piece (4) and the isolation piece (5), the second air pump (11) draws the original atmosphere inside the isolation piece (5), then reversely start the liquid pump (15) and the air cylinder (43), the liquid pump (15) draws the exhaust liquid inside the isolation piece (5), the air cylinder (43) drives the thin plate (41) and the inner soft sleeve (42) to reset downward, close the second air pump (11), and start the first air pump (10) to fill pure gas into the inside of the isolation piece (5); S3-3, the monitoring result of the gas in the isolation piece (5) by the visibility instrument body (1) is compared with the standard result, when the difference between the two is within the allowable range, it is determined that there is no netting in the optical detection area, otherwise, when the difference between the two exceeds the allowable range, it is determined that there is netting in the optical detection area, that is, the monitoring result of the visibility instrument body (1) is distorted.

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