Air pipe monitoring device based on image processing and control method thereof

Abstract

The invention discloses an air pipe monitoring device based on image processing and a control method thereof, which are used for monitoring the leakage condition of an air pipe in an interlayer, and comprise a smoke generator which is arranged in the interlayer, and the output end of the smoke generator is communicated with the air pipe; the monitoring unit is arranged in the interlayer and used for obtaining air pipe surface image information; and the control unit is in signal connection with the smoke generator and the monitoring unit and is used for controlling the smoke generator to operate and judging a leakage point according to image information fed back by the monitoring unit. According to the invention, the environmental risk of manual detection can be effectively reduced, the manual working difficulty is reduced, errors of manual detection are avoided, missing detection is avoided, and a complete report can be synchronously recorded in the monitoring process, so that subsequent lookup and calibration are facilitated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air duct monitoring, in particular to an air duct monitoring device based on image processing and a control method thereof. BACKGROUND

[0002] The interlayer space of air duct layout is usually dimly lit and poorly ventilated, and may have abnormal temperature and humidity (such as high temperature and high humidity) or harmful gas accumulation. Long-time operation can easily cause personnel to suffer from heatstroke, oxygen deficiency or respiratory discomfort. In addition, there may be sharp metal edges, pipeline intersections and other obstacles in the interlayer, increasing the risk of collision and scratches. Secondly, the leak detection personnel need to move or climb in a small space, which is easy to stumble and fall. When using tools (such as flashlights and detection instruments), improper operation may cause equipment damage or secondary damage to the air duct. The traditional visual and sound method relies on manual judgment, which is highly subjective and easy to miss small gaps. Finally, manual data recording is prone to errors, and the location of air leakage points only relies on the sense of smell, making it difficult to find hidden parts (such as ceiling and structural interlayer). In view of the above problems, an air duct monitoring device based on image processing and a control method thereof are proposed to solve the above problems. SUMMARY

[0003] The purpose of the present application is to provide an air duct monitoring device based on image processing and a control method thereof to solve the above problems.

[0004] To solve the above technical problems, the present application adopts the following technical scheme: an air duct monitoring device based on image processing is used to monitor the leakage of air ducts in the interlayer, comprising: A smoke generator is arranged in the interlayer, and the output end thereof is communicated with the air duct; A monitoring unit is arranged in the interlayer to obtain image information of the surface of the air duct; A control unit is signal connected with the smoke generator and the monitoring unit to control the operation of the smoke generator and determine the leakage point according to the feedback image information of the monitoring unit.

[0005] Further, the output end of the smoke generator is provided with a communication pipe corresponding to the number of air ducts, and each communication pipe is in one-to-one communication with the air duct.

[0006] Further, a control valve is arranged on the communication pipe, and the control valve is electrically connected with the control unit.

[0007] Further, the monitoring unit comprises a plurality of groups of first identification cameras, and the plurality of groups of first identification cameras are uniformly distributed in the interlayer.

[0008] Further, the monitoring unit comprises a second identification camera and a driving unit. The driving unit drives the second identification camera to move along the air pipe layout direction.

[0009] Further, the first identification camera comprises a first adjusting seat, a second adjusting seat and a first camera. The first adjusting seat is fixedly arranged in the interlayer. The second adjusting seat is rotationally arranged in the first adjusting seat and is deflected with the first adjusting seat. The first camera is rotationally arranged in the second adjusting seat and is deflected with the second adjusting seat.

[0010] Further, the second identification camera comprises a third adjusting seat and a second camera rotationally arranged in the third adjusting seat, and the second camera is deflected with the third adjusting seat. The driving unit comprises a driving screw and a driving motor fixedly arranged in the interlayer, and further comprises a limiting rib fixedly arranged in the interlayer. The third adjusting seat is engaged with the driving screw, and a missing part adapted to the limiting rib is formed on the third adjusting seat. The driving motor is operated to drive the driving screw to rotate and drive the third adjusting seat to move along the length direction of the driving screw.

[0011] Another technical solution of the present application is a control method of an air pipe monitoring device based on image processing, comprising the following steps: S1, original image acquisition, the control unit remotely controls the monitoring unit to operate to acquire original image information of each monitoring point on the surface of the air pipe to be measured; S2, test smoke, the control unit remotely controls the smoke generator and makes the control valve at the output end conductive to generate test smoke into the air pipe to be measured; S3, live image acquisition, the control unit remotely controls the monitoring unit to operate to acquire live image information of each monitoring point on the surface of the air pipe to be measured after the smoke is introduced; S4, image comparison, the control unit compares the original image information and the live image information acquired in steps S1 and S3, and judges whether there is a smoke leakage phenomenon at each monitoring point according to the comparison result; S5, information feedback, the judgment result in step S4 is fed back to the remote control end with corresponding image information and position information, and the defect type, position, quantity and severity evaluation according to the judgment result are recorded to trigger the stop, adjustment instruction or remind the user.

[0012] Further, the monitoring unit records the current position information when acquiring image information in steps S1 and S2.

[0013] Further, the step S4 uses Gaussian filtering, image sharpening and other technologies to improve the defect contrast before image contrast.

[0014] The beneficial effects of the present application are embodied in: The present application can effectively reduce the environmental risk of human detection, reduce the difficulty of human work, avoid the error of artificial detection and avoid missed detection, and can record complete reports in the monitoring process to facilitate subsequent review and calibration. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 The first embodiment structure schematic diagram of the present application is shown in the figure. Figure 2 The second embodiment structure schematic diagram of the present application is shown in the figure. Figure 3 The first embodiment structure front view of the present application is shown in the figure. Figure 4 The second embodiment structure front view of the present application is shown in the figure. Figure 5 The first embodiment structure side view of the present application is shown in the figure. Figure 6 The first recognition camera structure schematic diagram of the present application is shown in the figure. Figure 7 The second recognition camera structure schematic diagram of the present application is shown in the figure. Figure 8 The first recognition camera structure schematic diagram of the present application is shown in the figure. Figure 2 The structure enlarged schematic diagram of A in the figure. Figure 9 The flowchart of the present application is shown in the figure.

[0016] In the figure: 01, interlayer; 02, air pipe; 1, smoking device; 2, monitoring unit; 21, first recognition camera; 211, first adjusting seat; 212, second adjusting seat; 213, first camera; 22, second recognition camera; 221, third adjusting seat; 222, driving screw rod; 223, second camera; 224, limiting rib. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. The embodiments in the present application and the features in the embodiments can be combined with each other without conflict. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0018] Please refer to Figures 1-9 The application discloses a kind of based on image processing's air pipe monitoring device, to monitor the air pipe 02 leakage situation in interlayer 01, comprising: Smoke generator 1 is arranged in interlayer 01, and its output end is communicated with air pipe 02; Monitoring unit 2 is arranged in interlayer 01, to obtain the image information of air pipe 02 surface; Control unit, the control unit is signal connected with smoke generator 1 and monitoring unit 2, to control the operation of the smoke generator 1, and according to the image information of monitoring unit 2 feedback point of leakage is judged.

[0019] It should be noted that the output end of the smoke generator 1 is provided with a plurality of communication pipes corresponding to the number of air pipes 02, and each of the communication pipes is communicated with the air pipe 02 one by one.

[0020] It is further necessary to supplement that the communication pipe is provided with a control valve, and the control valve is electrically connected with the control unit. The control valve in the above structure belongs to a conventional technical means in the prior art, and therefore is not described and expressed in detail in the present application. The control valve is provided to avoid the internal airflow of the air pipe 02 from entering the smoke generator 1 during normal use.

[0021] In a preferred embodiment, as shown in Figure 1 , 3 The monitoring unit 2 comprises a plurality of groups of first identification cameras 21, and the plurality of groups of first identification cameras 21 are uniformly distributed in the interlayer 01.

[0022] Specifically, as shown in Figure 6 The first identification camera 21 comprises a first adjusting seat 211, a second adjusting seat 212 and a first camera 213. The first adjusting seat 211 is fixedly arranged in the interlayer 01. The second adjusting seat 212 is rotatably arranged in the first adjusting seat 211, and is deflected with the first adjusting seat 211. The first camera 213 is rotatably arranged in the second adjusting seat 212, and is deflected with the second adjusting seat 212.

[0023] In this embodiment, the first camera 213 can swing its direction under the cooperation of the first adjusting seat 211 and the second adjusting seat 212, to obtain image information in a wider range, and the image information obtained between adjacent first cameras 213 should have the same reference boundary, to facilitate image integration and merging into complete image information of the air pipe 02 as a whole, to avoid omission.

[0024] In another preferred embodiment, as shown in Figure 2 , 4As shown, the monitoring unit 2 comprises a second identification camera 22 and a driving unit; The driving unit drives the second identification camera 22 to move along the arrangement direction of the air pipe 02.

[0025] Specifically, the second identification camera 22 comprises a third adjusting seat 221 and a second camera 223 rotatably arranged in the third adjusting seat 221, and the second camera 223 is used to deflect with the driving of the third adjusting seat 221; The driving unit comprises a driving screw 222 fixedly arranged in the interlayer 01 and a driving motor, and further comprises a limiting rib 224 fixedly arranged in the interlayer 01; The third adjusting seat 221 is engaged with the driving screw 222, and a missing part adapted to the limiting rib 224 is formed in the third adjusting seat 221; The driving motor is used to drive the driving screw 222 to rotate and drive the third adjusting seat 221 to move along the length direction of the driving screw 222.

[0026] In this embodiment, the driving unit is arranged along the arrangement direction of the air pipe 02, and a plurality of driving units are combined to adapt to the corner of the air pipe 02 for the corner.

[0027] Through the above structure, when monitoring is needed, the driving motor is operated to drive the driving screw 222 to rotate, and since the driving screw 222 is engaged with the third adjusting seat 221, the third adjusting seat 221 can be relatively reciprocated according to the rotating direction during the rotation of the driving screw 222. Further, through the structure that the limiting rib 224 and the third adjusting seat 221 are provided with the missing part adapted to the limiting rib 224, the third adjusting seat 221 can be prevented from rotating during the driving of the driving screw 222 to move the third adjusting seat 221.

[0028] Another technical solution of the present application is a control method of an air pipe monitoring device based on image processing, comprising the following steps: S1, original image acquisition, the control unit remotely controls the monitoring unit 2 to operate to acquire the original image information of each monitoring point on the surface of the air pipe 02 to be tested; S2, test smoke, the control unit remotely controls the smoke generator 1 and makes the control valve at the output end conductive to generate test smoke into the air pipe 02 to be tested; S3, live image acquisition, the control unit remotely controls the monitoring unit 2 to operate to acquire the live image information of each monitoring point on the surface of the air pipe 02 to be tested after the smoke is introduced; S4, image comparison, the control unit compares the original image information and the live image information obtained in steps S1 and S3, and judges whether there is a smoke leakage phenomenon at each monitoring point according to the comparison result; S5, information feedback, the corresponding image information and position information in step S4 are fed back to the remote control terminal, and the defect type, position, quantity, and severity evaluation according to the judgment result are recorded to trigger the shutdown, adjustment instruction or remind the user.

[0029] It should be noted that in steps S1 and S3, when the monitoring unit 2 obtains the image information fed back by each monitoring point, the control unit should also record the position information of the current monitoring point and the time when the current image information is obtained, so as to facilitate comparison and judgment in subsequent image comparison; In step S2, the smoke generator 1 generates smoke for 10-30 minutes to ensure that the smoke is fully diffused into the whole air pipe 02, and to ensure the smoke concentration in each part of the air pipe 02, so as to avoid insufficient concentration in some leakage parts and difficult to find in the subsequent comparison process; In the above control method, the environmental risk of human detection can be effectively reduced, the difficulty of human work is reduced, the error of manual detection is avoided, and the complete report can be recorded synchronously in the monitoring process, so as to facilitate subsequent review and calibration.

[0030] It should be noted that in step S4, the image contrast is improved by using Gaussian filtering, image sharpening and other technologies before image contrast, or other ways easily thought of by those skilled in the art are used instead.

[0031] It should be noted that if the embodiment of the present application involves directional indication (such as up, down, left, right, front, back, etc.), the directional indication is only used to explain the relative position relationship, motion condition, etc. between the components in a certain posture (as shown in the drawings), if the certain posture changes, the directional indication also changes accordingly.

[0032] In addition, if the embodiment of the present application involves the description of "first", "second" and the like, the description of "first", "second" and the like is only for description purpose, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the present application.

[0033] In addition, "a plurality of" means two or more.

[0034] The above description is only the preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An air duct monitoring device based on image processing, used to monitor the leakage of an air duct (02) located in a mezzanine (01), characterized in that: include: A smoke generator (1) is arranged in the interlayer (01), and its output end is connected to the air duct (02); A monitoring unit (2) is provided in the interlayer (01) and is used to obtain surface image information of the air duct (02); A control unit is connected to the smoke generator (1) and the monitoring unit (2) by signal, and is used to control the operation of the smoke generator (1) and determine the leakage point based on the image information fed back by the monitoring unit (2).

2. The air duct monitoring device based on image processing according to claim 1, characterized in that: The output end of the smoke generator (1) is provided with connecting pipes corresponding to the number of the air ducts (02), and each of the connecting pipes is connected to the air ducts (02) one by one.

3. The air duct monitoring device based on image processing according to claim 2, characterized in that: The connecting pipe is provided with a control valve, and the control valve is electrically connected to the control unit.

4. The air duct monitoring device based on image processing according to claim 1, characterized in that: The monitoring unit (2) comprises a plurality of groups of first recognition cameras (21), and the plurality of groups of the first recognition cameras (21) are evenly distributed in the interlayer (01).

5. The air duct monitoring device based on image processing according to claim 1, characterized in that: The monitoring unit (2) includes a second recognition camera (22) and a driving unit; The driving unit drives the second recognition camera (22) to move along the arrangement direction of the air duct (02).

6. The air duct monitoring device based on image processing according to claim 4, characterized in that: The first recognition camera (21) comprises a first adjustment seat (211), a second adjustment seat (212) and a first camera (213); The first adjustment seat (211) is fixedly arranged in the interlayer (01); The second adjustment seat (212) is rotatably disposed in the first adjustment seat (211) and is configured to deflect when driven by the first adjustment seat (211); The first camera (213) is rotatably disposed in the second adjustment seat (212) and is configured to deflect as the second adjustment seat (212) is driven.

7. The air duct monitoring device based on image processing according to claim 5, characterized in that: The second recognition camera (22) includes a third adjustment seat (221) and a second camera (223) rotatably arranged in the third adjustment seat (221), and the second camera (223) is used to deflect when the third adjustment seat (221) is driven; The driving unit includes a driving screw (222) and a driving motor fixedly arranged in the interlayer (01), and also includes a limiting rib (224) fixedly arranged in the interlayer (01); The third adjustment seat (221) is engaged with the driving screw rod (222), and a missing portion adapted to the limiting rib (224) is provided on the third adjustment seat (221); The driving motor is operated to drive the driving screw (222) to rotate and drive the third adjustment seat (221) to move along the length direction of the driving screw (222).

8. The control method of an air duct monitoring device based on image processing according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1, original image acquisition, the control unit remotely controls the monitoring unit (2) to operate to obtain original image information of each monitoring point on the surface of the air duct (02) to be measured; S2, test smoke, the control unit remotely controls the smoke generator (1) and turns on the control valve at its output end to generate test smoke that enters the air duct (02) to be tested; S3, real-time image acquisition, the control unit remotely controls the monitoring unit (2) to operate to obtain real-time image information of each monitoring point on the surface of the air duct (02) to be tested after smoke is introduced; S4, image comparison: the control unit compares the original image information obtained in step S1 and step S3 with the live image information, and determines whether there is smoke leakage at each monitoring point based on the comparison results; S5, information feedback, feeding back the judgment result in step S4 and the corresponding image information and position information to the remote control terminal and recording the defect type, location, and quantity, and performing a severity assessment based on the judgment result to trigger a shutdown, adjustment instruction or remind the user.

9. The control method of the air duct monitoring device based on image processing according to claim 8, characterized in that: In the steps S1 and S2, the monitoring unit (2) records the current position information when acquiring the image information.

10. The control method of the air duct monitoring device based on image processing according to claim 8, characterized in that: In step S4, before image comparison, Gaussian filtering, image sharpening and other techniques are used to enhance defect contrast.

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