Detection device
By using a split housing and annular shielding component, combined with a drive mechanism to automatically clean foreign objects, the problems of high maintenance costs and low detection accuracy of the detection device are solved, achieving self-cleaning function and improved accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-07
- Publication Date
- 2026-03-17
AI Technical Summary
Conventional detection devices are costly, difficult to maintain, and have low detection accuracy, mainly because dust, leaves, spider webs, and other foreign objects accumulate inside the annular shield and need to be cleaned regularly.
The device uses a separate housing and annular shield, and the first drive mechanism drives the annular shield to rotate, automatically clearing foreign objects and avoiding manual maintenance.
This eliminates the need for regular manual cleaning, reducing maintenance difficulty and costs, and improving detection accuracy and device lifespan.
Smart Images
Figure CN224004945U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of detection device design technology, and specifically relates to a detection device. Background Technology
[0002] In conventional detection devices, taking visibility detectors as an example, such devices can detect the visibility of the surrounding environment. These devices typically include a transmitter and a receiver. The special light emitted by the transmitter can undergo diffuse reflection when it encounters fog, smoke, haze, dust, or sand, and is thus reflected to the receiver. When the receiver receives more light, it means the visibility of the surrounding environment is low; conversely, when the receiver receives less light, it means the visibility of the surrounding environment is high.
[0003] To prevent the special light emitted by the transmitter from directly entering the receiver, both the transmitter and receiver are typically tilted downwards, and their front ends are usually formed with annular shields. These shields further prevent the special light emitted by the transmitter from directly entering the receiver. The annular shields have light-transmitting channels. However, these channels often accumulate dust, leaves, cobwebs, and withered grass, which can easily block the light emitted by the transmitter and the light reflected back to the receiver. This necessitates regular cleaning by maintenance personnel. Since most detection devices are installed beside highways or in mountainous areas, this presents significant maintenance challenges and high costs. Furthermore, failure to promptly remove these foreign objects can negatively impact the detection accuracy of the device.
[0004] In summary, the detection devices involved in the relevant technologies suffer from high maintenance costs, high difficulty, and low detection accuracy. Utility Model Content
[0005] This application discloses a detection device to solve the problems of high maintenance costs, high difficulty, and low detection accuracy of the detection devices involved in the related technologies.
[0006] To solve the above-mentioned technical problems, this application adopts the following technical solution:
[0007] A detection device includes a transmitter and a receiver.
[0008] At least one of the transmitter and the receiver includes a first drive mechanism and a separately configured housing and an annular shield. The housing has an inner cavity and a detection window communicating with the inner cavity. The annular shield is rotatably disposed on the housing and surrounds the detection window.
[0009] At least a portion of the first driving mechanism is disposed in the inner cavity and connected to the annular shield to drive the annular shield to rotate relative to the housing.
[0010] The technical solution adopted in this application can achieve the following beneficial effects:
[0011] In this application, because the housing and the annular shield are separately configured, and the first driving mechanism can drive the annular shield to rotate relative to the housing, foreign objects such as dust, leaves, spider webs, and withered grass accumulated inside the annular shield can rotate along with it during rotation. Subsequently, these foreign objects will smoothly slide out of the annular shield under the action of gravity. Therefore, this configuration does not require regular cleaning by maintenance personnel, thus avoiding the problems of high maintenance difficulty and cost. Furthermore, this application can periodically drive the annular shield to rotate, promptly clearing accumulated foreign objects from within it, thereby improving the detection accuracy of the detection device. Therefore, the detection device disclosed in this application can solve the problems of high maintenance costs, high difficulty, and low detection accuracy of related technology detection devices. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the detection device disclosed in the embodiments of this application;
[0013] Figure 2 This is a cross-sectional structural diagram of the launching device disclosed in the embodiments of this application;
[0014] Figure 3 and Figure 4 This is an exploded view of the detection device disclosed in the embodiments of this application;
[0015] Figure 5 This is a schematic diagram of the external structure of the transmitter or receiver disclosed in the embodiments of this application;
[0016] Figure 6 This is a partial cross-sectional structural schematic diagram of the transmitter or receiver disclosed in the embodiments of this application;
[0017] Figure 7 This is a cross-sectional view of the annular shielding member disclosed in an embodiment of this application;
[0018] Figure 8 This is a side view of the annular shielding member disclosed in an embodiment of this application;
[0019] Figure 9 and Figure 10 These are schematic diagrams of the second pressing component from different perspectives disclosed in the embodiments of this application;
[0020] Figure 11 This is a schematic diagram of the structure of the rotating component disclosed in the embodiments of this application;
[0021] Figure 12 and Figure 13These are cross-sectional structural diagrams of the rotating component from different perspectives as disclosed in the embodiments of this application.
[0022] Explanation of reference numerals in the attached figures:
[0023] 110 - Transmitter, 111 - First detection field of view, 120 - Receiver, 121 - Second detection field of view, 130 - Detection area, 140 - Processor;
[0024] 200-First drive mechanism, 210-First drive source, 220-First transmission rod, 230-Gear, 231-First side, 232-Second side;
[0025] 300-Housing shell, 301-Housing body, 302-Rear cover, 303-Allowing groove, 304-First protrusion, 310-Inner cavity, 320-Detection window, 321-Window glass, 330-Limiting boss, 331-Mounting hole, 332-Positioning groove, 333-Through hole, 340-Light-emitting element, 350-First fixing seat, 360-Second fixing seat;
[0026] 400-ring-shaped shield, 401-light transmission channel, 410-internal teeth, 420-guide rib, 430-sloping opening;
[0027] 510-First pressing component, 520-Second pressing component, 521-First limiting groove, 522-Limiting rib, 523-Second protrusion, 530-Cleaning brush;
[0028] 600 - Second drive mechanism, 610 - Second drive source, 620 - Second transmission rod, 630 - Coupling;
[0029] 700-Rotating component, 710-First rotating rod, 711-Second limiting groove, 720-Second rotating rod, 730-Third rotating rod;
[0030] 800 - Control components;
[0031] 910-First seal, 920-Second seal, 930-Third seal, 940-Fourth seal, 950-Fifth seal, 960-Snap ring pressure plate, 970-Shaft sleeve, 980-Nut. Detailed Implementation
[0032] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0033] The detection device disclosed in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.
[0034] Please refer to Figures 1-13 This application discloses a detection device, which includes a transmitter 110 and a receiver 120.
[0035] The detection device disclosed in this application can detect the visibility of the surrounding environment. Specifically, the transmitter 110 emits light into the surrounding environment, the receiver 120 receives the light, and the processor 140 of the detection device acquires the data emitted by the receiver 120 and analyzes and processes it, thereby achieving the purpose of detecting the visibility of the surrounding environment. The transmitter 110 and the receiver 120 can be connected to the processor 140 via different cantilever arms. Both the transmitter 110 and the receiver 120 are inclined relative to the processor 140 and are symmetrically arranged. Please refer to... Figure 1 The transmitter 110 has a first detection field of view 111, and the receiver 120 has a second detection field of view 121. The first detection field of view 111 and the second detection field of view 121 intersect and have an overlapping area. This overlapping area is the detection area 130 that the detection device actually performs detection on.
[0036] At least one of the transmitter 110 and receiver 120 includes a first drive mechanism 200 and a separately configured housing 300 and an annular shield 400. The housing 300 has an inner cavity 310 and a detection window 320 communicating with the inner cavity 310, i.e., the detection window 320 is a detection hole. Specifically, the housing 300 may include a detachably connected housing body 301 and a rear cover 302, which are connected to form the inner cavity 310. The housing body 301 has a detection window 320, and a viewing glass 321 is provided at the detection window 320. Other components of the transmitter 110 or receiver 120 may be disposed in the inner cavity 310.
[0037] Taking transmitter 110 as an example, please refer to... Figure 2 The emitting element 110 may further include a light-emitting element 340 and a first fixing seat 350. The light-emitting element 340 is used to emit light to the surrounding environment. The first fixing seat 350 is disposed on the inner wall of the inner cavity 310 through a first connector, and the first fixing seat 350 is pressed against the edge of the viewing window 321 to ensure the stability of the viewing window 321. The light-emitting element 340 is mounted on the first fixing seat 350 so that the light-emitting element 340 can always stably face the detection viewing window 320. Taking the receiving element 120 as an example, the receiving element 120 may further include a receiver for receiving light. The receiver is disposed in the inner cavity 310 and always faces the detection viewing window 320.
[0038] An annular shield 400 is rotatably mounted on the housing 300 and surrounds the detection window 320. The annular shield 400 has a light transmission channel 401 to allow the transmitter 110 to emit light to the detection area 130 and to allow the receiver 120 to receive the light reflected into the receiver 120. The end of the annular shield 400 away from the housing 300 has an inclined surface, that is, the opening of the annular shield 400 is an inclined opening 430, and this opening can always be set downwards. This allows foreign objects accumulated in the light transmission channel 401 to slide out smoothly under the action of gravity. At the same time, since the annular shield 400 is circular, the smooth outer wall of the annular shield 400 can prevent the accumulation of foreign objects and cobwebs.
[0039] At least a portion of the first driving mechanism 200 is located in the inner cavity 310 and connected to the annular shield 400 to drive the annular shield 400 to rotate relative to the housing 300. During the rotation of the annular shield 400, foreign objects such as dust, leaves, spider webs and withered grass accumulated in the light transmission channel 401 can rotate together with the annular shield 400 and quickly slide out of the light transmission channel 401 through the inclined opening 430 under the action of gravity.
[0040] Alternatively, please refer to Figure 2 and Figure 3 A first sealing element 910 may be provided between the viewing window 321 and the detection window 320, and the first sealing element 910 is sealed to both the viewing window 321 and the detection window 320. A second sealing element 920 may be provided between the shell body 301 and the rear cover 302, and the second sealing element 920 is sealed to both the shell body 301 and the rear cover 302. This can ensure the sealing of the inner cavity 310, thereby ensuring the working stability of the first driving mechanism 200, the light-emitting element 340 and other components in the inner cavity 310.
[0041] In this application, since the housing 300 and the annular shield 400 are separately configured, and the first driving mechanism 200 can drive the annular shield 400 to rotate relative to the housing 300, foreign objects such as dust, leaves, spider webs, and withered grass accumulated inside the annular shield 400 can rotate along with it during rotation. Subsequently, these foreign objects will smoothly slide out of the annular shield 400 under the action of gravity. Therefore, this configuration does not require regular cleaning by maintenance personnel, thus avoiding the problems of high maintenance difficulty and cost. Furthermore, this application can periodically drive the annular shield 400 to rotate, promptly clearing accumulated foreign objects from within it, thereby improving the detection accuracy of the detection device. Therefore, the detection device disclosed in this application can solve the problems of high maintenance costs, high difficulty, and low detection accuracy of detection devices involved in related technologies.
[0042] Furthermore, since the first drive mechanism 200 can drive the annular shield 400 to rotate relative to the housing 300, the detection device has a self-cleaning function, thereby extending the service life of the detection device. Moreover, the timed operation of the first drive mechanism 200 can achieve the effect of timed removal of foreign objects. Furthermore, since the transmitter 110 and receiver 120 use the same components to achieve the self-cleaning function, it is convenient for both to be repaired or relocated.
[0043] Alternatively, please refer to Figure 2 , Figure 4 and Figure 6 The housing 300 has a protruding limiting boss 330, and the annular blocking member 400 is sleeved on the annular sidewall of the limiting boss 330. The limiting boss 330 can support part of the annular blocking member 400 to ensure the rotational stability and setting stability of the annular blocking member 400. Of course, the housing 300 may not have a protruding limiting boss 330.
[0044] In normal conditions, since the inclined opening 430 of the annular shield 400 is always tilted downwards, meaning the top side of the annular shield 400 is relatively long, to further prevent the special light emitted by the transmitter 110 from directly entering the receiver 120, optionally, please refer to... Figure 2 , Figure 5 and Figure 6 The limiting boss 330 includes a top edge. The detection window 320 is located in the area near the top edge of the limiting boss 330, that is, the detection window 320 is located at the upper part of the limiting boss 330, and is also located close to the top side of the annular shield 400. This allows the longer top side of the annular shield 400 to better block the special light emitted by the transmitter 110 from directly entering the receiver 120, thereby further ensuring the measurement accuracy and sensitivity of the detection device. Of course, the detection window 320 can also be located in the middle area of the limiting boss 330.
[0045] Optionally, the first drive mechanism 200 may include a first drive source 210 and a first transmission assembly connected together. The first drive source 210 is located in the inner cavity 310, specifically at the second fixed seat 360 installed on the inner wall of the inner cavity 310. The first transmission assembly may only include a first transmission rod 220, which may be a curved transmission rod. The first drive source 210 is connected to the first transmission rod 220. The first drive source 210 drives the first transmission rod 220 to rotate in the inner cavity 310, thereby driving the annular blocking member 400 to rotate relative to the housing 300.
[0046] In another embodiment, the first transmission assembly may further include a gear 230 connected to the first transmission rod 220. In this case, the first transmission rod 220 may be a straight rod, and the gear 230 may mesh with the internal teeth 410 on the annular shield 400, so that the first drive source 210 drives the annular shield 400 to rotate relative to the housing 300 by sequentially driving the first transmission rod 220 and the gear 230. Therefore, in this embodiment, the first transmission rod 220 does not need to be designed with a complex structure, thus occupying relatively little space when rotating in the inner cavity 310. Furthermore, by transmitting driving force through the gear 230, the overall transmission accuracy and rotational stability of the annular shield 400 can be improved.
[0047] Optionally, the end of the first transmission rod 220 that is connected to the gear 230 can be a prismatic structure. Correspondingly, the shape of the hole in the gear 230 that mates with the first transmission rod 220 can be adapted to the shape of the end of the first transmission rod 220 to ensure that the first transmission rod 220 can drive the gear 230 to rotate.
[0048] Optionally, the end wall of the limiting boss 330 with the detection window 320 can be provided with a through-shaft hole. One end of the first transmission rod 220 passes through the through-shaft hole and cooperates with the gear 230. The gear 230 meshes with the internal teeth 410 on the annular shield 400. That is, the entire gear 230 can be located outside the housing 300 and inside the light transmission channel 401.
[0049] In another embodiment, please refer to Figure 2 and Figure 6 The annular sidewall of the limiting boss 330 is provided with a mounting hole 331 that communicates with the inner cavity 310. The end wall of the limiting boss 330 is provided with a positioning groove 332. One end of the first transmission rod 220 is connected to the first drive source 210, and the other end of the first transmission rod 220 is rotatably disposed in the positioning groove 332. A part of the gear 230 extends out of the inner cavity 310 through the mounting hole 331 and meshes with the internal teeth 410 on the annular shield 400. That is, the other part of the gear 230 is located in the inner cavity 310, so that the housing 300 can better protect the part of the gear 230. This arrangement can improve the compactness of the overall structure.
[0050] Optionally, to improve the engagement stability between the gear 230 and the internal teeth 410 on the annular retainer 400, the thickness of the gear 230 can be designed to be larger, while the axial dimension of the annular sidewall of the limiting boss 330 can usually be designed to be smaller to meet the requirements. Therefore, please refer to... Figure 5To facilitate the installation of gear 230, a clearance groove 303 may be provided on the housing 300. The clearance groove 303 is connected to the mounting hole 331. Part of gear 230 may be located in the clearance groove 303. The clearance groove 303 can limit gear 230 while protecting part of gear 230.
[0051] Alternatively, please refer to Figure 2 and Figure 3 At least one of the transmitter 110 and receiver 120 may further include a first pressing member 510. The first pressing member 510 and the gear 230 are sequentially sleeved on the first transmission rod 220, and the first pressing member 510 is connected to the inner wall of the housing 300. Specifically, the first pressing member 510 can be connected to the inner wall of the housing 300 through the second connecting member, and a fifth sealing member 950 can be sandwiched between the first pressing member 510 and the inner wall of the housing 300 to prevent water vapor and other impurities from entering the inner cavity 310 through the mounting hole 331 and the gap between the first pressing member 510 and the inner wall of the housing 300.
[0052] In the extending direction of the first transmission rod 220, the gear 230 has a first side 231 and a second side 232 arranged opposite to each other. The first side 231 is in a limiting engagement with the end wall of the limiting boss 330, and the second side 232 is in a limiting engagement with the first pressing member 510. That is, the end wall of the first pressing member 510 and the limiting boss 330 can limit the gear 230 in different directions, thereby ensuring the rotational stability of the gear 230, and thus ensuring the rotational stability of the annular shield 400. Of course, at least one of the transmitting member 110 and the receiving member 120 may not include the first pressing member 510.
[0053] Alternatively, please refer to Figure 2 and Figures 4 to 10 At least one of the transmitter 110 and receiver 120 may further include a second pressing member 520. The second pressing member 520 has an annular first limiting groove 521. A guide rib 420 extending circumferentially along the annular shield 400 protrudes from the annular shield 400. The second pressing member 520 is sleeved on the annular shield 400 and is connected to the outer wall of the housing 300. Optionally, a first protrusion 304 may protrude from the outer wall of the housing 300, and a second protrusion 523 may protrude from the second pressing member 520. The first protrusion 304 and the second protrusion 523 may be detachably connected to each other by a third connector, so that the second pressing member 520 is detachably connected to the outer wall of the housing 300.
[0054] When the second pressing member 520 is connected to the outer wall of the housing 300, the guide rib 420 is confined within the first limiting groove 521 in the axial direction of the annular shield 400. This means the second pressing member 520 can mount the annular shield 400 onto the housing 300, and the annular shield 400 can rotate relative to the second pressing member 520 and the housing 300 via the guide rib 420. Therefore, while ensuring the annular shield 400 is not easily detached from the housing 300, the first limiting groove 521 of the second pressing member 520 does not restrict the rotation of the annular shield 400. Of course, at least one of the transmitting member 110 and the receiving member 120 may not include the second pressing member 520. In this case, the axial dimension of the limiting boss 330 can be designed to be larger to better support the annular shield 400, thereby making it less likely for the annular shield 400 to detach.
[0055] Optionally, at least two limiting ribs 522 protrude from the sidewall of the first limiting groove 521. Each limiting rib 522 can be spaced apart circumferentially along the first limiting groove 521, and each limiting rib 522 slides in engagement with the guide rib 420, so that the contact between the annular blocking member 400 and the second pressing member 520 is a line contact. That is, this arrangement can reduce the frictional force between the two, thereby allowing the annular blocking member 400 to rotate more smoothly relative to the housing 300. Of course, the limiting ribs 522 may not protrude from the sidewall of the first limiting groove 521.
[0056] Alternatively, please refer to Figures 2 to 4 At least one of the transmitter 110 and receiver 120 may further include a second drive mechanism 600 and a rotating member 700. The rotating member 700 may be a bent member, and at least a portion of the rotating member 700 is located within the annular shield 400. The second drive mechanism 600 includes a connected second drive source 610 and a second transmission assembly. The second drive source 610 is located in the inner cavity 310, specifically by means of the second fixing seat 360 described above.
[0057] One end of the second transmission assembly is connected to the rotating member 700 to drive the rotating member 700 to rotate relative to the housing 300. Since the rotating member 700 is a bent member, and at least a portion of the rotating member 700 is located within the annular shield 400, this allows a portion of the rotating member 700 to make eccentric movements within the annular shield 400, thereby better removing foreign objects such as spider webs adhering to the annular shield 400. Of course, at least one of the transmitter 110 and the receiver 120 may not include the second drive mechanism 600 and the rotating member 700.
[0058] Alternatively, please refer to Figure 2 , Figure 4 , Figures 11 to 13The rotating component 700 may include a first rotating rod 710 and a second rotating rod 720 connected together. The first rotating rod 710 may extend radially along the annular shield 400, and the second rotating rod 720 may extend axially along the annular shield 400. The second rotating rod 720 is disposed close to the inner wall of the annular shield 400. That is, at this time, the rotating component 700 is generally L-shaped. One end of the second transmission component passes through the housing 300 and is connected to the first rotating rod 710. Specifically, the housing 300 may be a limiting boss 330 protruding from the housing 300 as described above, which has a through hole 333. One end of the second transmission component passes through the through hole 333 and is connected to the first rotating rod 710. The rotation axis of the rotating component 700 coincides with the rotation axis of the annular shield 400.
[0059] In this embodiment, since the rotation axis of the rotating component 700 coincides with the rotation axis of the annular shield 400, and the second rotating rod 720 is positioned close to the inner wall of the annular shield 400 (specifically, it can contact the inner wall of the annular shield 400), the second rotating rod 720 can better scrape off foreign objects such as spider webs or mud adhering to the inner wall of the annular shield 400 during the rotation of the rotating component 700. Therefore, this arrangement ensures a larger cleaning area for the annular shield 400 by the rotating component 700 and reduces cleaning dead zones, resulting in a better cleaning effect for the annular shield 400. Of course, the rotation axis of the rotating component 700 and the rotation axis of the annular shield 400 can also not coincide, and the second rotating rod 720 can be positioned further away from the inner wall of the annular shield 400.
[0060] Alternatively, please refer to Figure 2 and Figure 4 At least one of the transmitter 110 and receiver 120 may further include a cleaning brush 530. The cleaning brush 530 is disposed on the side of the first rotating rod 710 facing the detection window 320, specifically embedded in the second limiting groove 711 opened on the first rotating rod 710. When the first rotating rod 710 rotates, it can drive the cleaning brush 530 to scrape away water vapor, mud spots, and other debris on the window glass 321 at the detection window 320, thereby ensuring the measurement accuracy of the detection device. Of course, at least one of the transmitter 110 and receiver 120 may not include the cleaning brush 530.
[0061] Optionally, during the specific testing process, in order to avoid the rotating part 700 and the cleaning brush 530 obstructing the testing window 320, the rotating part 700 and the cleaning brush 530 can be set away from the testing window 320. For example, when the rotating part 700 stops rotating, the rotating part 700 can be stopped at a position with an angle of 45 degrees between it and the testing window 320, so that the first rotating rod 710 and the cleaning brush 530 do not obstruct the testing window 320.
[0062] Optionally, the rotating member 700 may further include a third rotating rod 730 connected to the second rotating rod 720. At least a portion of the annular blocking member 400 is sandwiched between the second rotating rod 720 and the third rotating rod 730, that is, at least a portion of the third rotating rod 730 is located outside the light transmission channel 401. During the rotation of the rotating member 700, the third rotating rod 730 can scrape off foreign objects such as spider webs or mud adhering to the edge or outer wall of the annular blocking member 400. At the same time, it can remove foreign objects such as spider webs adhering between the transmitting member 110 and the receiving member 120. Of course, the rotating member 700 may also not include the third rotating rod 730.
[0063] As described above, the first driving mechanism 200 includes a first driving source 210 and a first transmission assembly connected together. The first transmission assembly includes a first transmission rod 220 connected to the annular shield 400. The second transmission assembly specifically includes a second transmission rod 620 connected to the rotating member 700. That is, one end of the second transmission rod 620 is connected to the second driving source 610, and the other end of the second transmission rod 620 passes through the through hole 333 and is connected to the rotating member 700. Optionally, in this embodiment, the first transmission rod 220 can be directly connected to the first driving source 210, and the second transmission rod 620 can also be directly connected to the second driving source 610.
[0064] In another embodiment, at least one of the first transmission assembly and the second transmission assembly may include a coupling 630, which connects the first drive source 210 and the first transmission rod 220, and / or, the coupling 630 connects the second drive source 610 and the second transmission rod 620. Optionally, the number of couplings 630 may be at least two, with one coupling 630 connecting the first drive source 210 and the first transmission rod 220, and the other coupling 630 connecting the second drive source 610 and the second transmission rod 620.
[0065] In this embodiment, the coupling 630 can compensate for the offset between the output shaft of the first drive source 210 and the first transmission rod 220, and / or can compensate for the offset between the output shaft of the second drive source 610 and the second transmission rod 620, i.e., compensate for machining errors, so as to output driving force to the annular shield 400 and / or the rotating member 700 more stably.
[0066] Optionally, at least one of the transmitter 110 and receiver 120 may further include a control element 800. The control element 800 is disposed in the inner cavity 310 and electrically connected to the first drive source 210 and / or the second drive source 610. After the contacts on the coupling 630 contact the contacts on the control element 800 a preset number of times, the control element 800 controls the first drive source 210 and / or the second drive source 610 to stop working. The control element 800 can precisely control the rotation angle of the coupling 630, that is, precisely control the rotation angle of the first drive source 210 and / or the second drive source 610, thereby precisely controlling the rotation angle of the annular shield 400 and / or the rotating element 700, so as to reduce energy consumption while removing foreign objects. Of course, at least one of the transmitter 110 and receiver 120 may not include the control element 800.
[0067] Optionally, the above-mentioned preset number of times can be set according to the actual situation, and the embodiments of this application do not impose specific restrictions on this.
[0068] Alternatively, please refer to Figure 2 and Figure 3 At least one of the transmitter 110 and receiver 120 may further include a third seal 930. The third seal 930 may be disposed between the first transmission rod 220 and the first pressure member 510, and shall be in a sealing fit with both the first transmission rod 220 and the first pressure member 510 to prevent moisture and other impurities from entering the inner cavity 310 through the mounting hole 331 and the gap between the first transmission rod 220 and the first pressure member 510. Of course, at least one of the transmitter 110 and receiver 120 may not include the third seal 930.
[0069] Alternatively, please refer to Figure 2 and Figure 3 At least one of the transmitter 110 and receiver 120 may further include a fourth seal 940. The fourth seal 940 may be disposed between the second transmission rod 620 and the aforementioned through hole 333, and shall be in a sealing fit with both the second transmission rod 620 and the through hole 333 to prevent impurities such as moisture from entering the inner cavity 310 through the gap between the second transmission rod 620 and the through hole 333. Of course, at least one of the transmitter 110 and receiver 120 may not include the fourth seal 940.
[0070] Alternatively, please refer to Figure 2 and Figure 3At least one of the transmitting member 110 and the receiving member 120 may further include a retaining spring plate 960, which is engaged with the first transmission rod 220 and / or the second transmission rod 620. Taking the retaining spring plate 960 engaged with the first transmission rod 220 as an example, the retaining spring plate 960 is simultaneously confined within the aforementioned first pressing member 510. The retaining spring plate 960 can radially limit the first transmission rod 220 to ensure that the first transmission rod 220... The retaining spring plate 960 provides rotational stability and can limit the third sealing member 930. Taking the retaining spring plate 960 mounted on the second transmission rod 620 as an example, the retaining spring plate 960 is simultaneously confined within the through hole 333. The retaining spring plate 960 can radially limit the second transmission rod 620 to ensure its rotational stability, and can also limit the fourth sealing member 940. Of course, at least one of the transmitting member 110 and the receiving member 120 may not include the retaining spring plate 960.
[0071] Alternatively, please refer to Figure 2 and Figure 4 At least one of the transmitter 110 and receiver 120 may further include a bushing 970 filled with grease, and the bushing 970 is disposed between the through hole 333 and the second transmission rod 620 to ensure smoother rotation of the second transmission rod 620. Of course, at least one of the transmitter 110 and receiver 120 may not include the bushing 970.
[0072] Optionally, the end of the second transmission rod 620 connected to the rotating member 700 can be a prismatic structure. Correspondingly, the shape of the hole in the rotating member 700 that mates with the second transmission rod 620 can be adapted to the shape of the end of the second transmission rod 620 to ensure that the second transmission rod 220 can stably drive the rotating member 700 to rotate. Optionally, please refer to... Figure 2 and Figure 4 At least one of the transmitter 110 and receiver 120 may also include a nut 980. The end of the second transmission rod 620 connected to the rotating member 700 may be provided with an external thread. The nut 980 engages with the external thread to restrict the axial movement of the rotating member 700 along the second transmission rod 620. That is, this arrangement can prevent the rotating member 700 from falling off the second transmission rod 620.
[0073] Optionally, during the self-cleaning process of the detection device, the annular shield 400 and the rotating component 700 may not rotate simultaneously.
[0074] In another embodiment, to improve the self-cleaning efficiency of the detection device, the annular shield 400 and the rotating member 700 can work simultaneously. In this case, the rotation direction of the annular shield 400 can be opposite to that of the rotating member 700; or, the rotation direction of the annular shield 400 can be the same as that of the rotating member 700, and the rotation speed of the annular shield 400 can be different from that of the rotating member 700, so that while foreign objects inside the annular shield 400 are falling off as they rotate, the rotating member 700 can effectively remove the spider web inside the annular shield 400.
[0075] Optionally, when the detection device disclosed in this application is installed in the south where the temperature is higher, from March to October, the annular shield 400 can rotate clockwise twice and then counterclockwise twice every 20 minutes. Correspondingly, the rotating part 700 can rotate counterclockwise twice and then clockwise twice every 20 minutes. From November to February, the annular shield 400 can rotate clockwise twice and then counterclockwise twice per hour. Correspondingly, the rotating part 700 can rotate counterclockwise twice and then clockwise twice per hour.
[0076] When the detection device disclosed in this application is installed in northern regions with lower temperatures, from May to September, the annular shield 400 can rotate twice clockwise and then twice counterclockwise every 20 minutes. Correspondingly, the rotating component 700 can rotate twice counterclockwise and then twice clockwise every 20 minutes. From October to April, the annular shield 400 can rotate twice clockwise and then twice counterclockwise every hour. Correspondingly, the rotating component 700 can rotate twice counterclockwise and then twice clockwise every hour. Therefore, this application can adaptively adjust the self-cleaning frequency of the detection device for different geographical locations and temperatures to better remove foreign matter.
[0077] Optionally, when both the transmitter 110 and the receiver 120 include annular shielding members 400, during the specific self-cleaning process of the detection device, the annular shielding members 400 of the transmitter 110 and the annular shielding members 400 of the receiver 120 may not rotate simultaneously, so as to remove the spider web adhering between the transmitter 110 and the receiver 120, i.e., the spider web located in the detection area 130.
[0078] In another embodiment, to improve the self-cleaning efficiency of the detection device, the rotation direction of the annular shield 400 of the transmitter 110 is opposite to the rotation direction of the annular shield 400 of the receiver 120; or, the rotation direction of the annular shield 400 of the transmitter 110 is the same as the rotation direction of the annular shield 400 of the receiver 120, and the rotation speed of the annular shield 400 of the transmitter 110 is different from the rotation speed of the annular shield 400 of the receiver 120, so that while each achieves cleaning, the spider webs adhering between the two annular shields 400 can be removed.
[0079] The above embodiments of this application focus on describing the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. For the sake of brevity, they will not be described in detail here.
[0080] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.
Claims
1. A detection device, characterized in that, The transmitter (110) and the receiver (120) are provided, At least one of the transmitter (110) and the receiver (120) comprises a first driving mechanism (200), a housing (300) and a ring-shaped shielding member (400), the housing (300) has an inner cavity (310) and a detection window (320) which is in communication with the inner cavity (310), and the ring-shaped shielding member (400) is rotatably arranged in the housing (300) and surrounds the detection window (320). At least part of the first driving mechanism (200) is arranged in the inner cavity (310) and connected with the ring-shaped shielding member (400) to drive the ring-shaped shielding member (400) to rotate relative to the housing (300).
2. The detection device of claim 1, wherein, The housing (300) is provided with a limiting boss (330) which protrudes outward, the ring-shaped shielding member (400) is sleeved on the ring-shaped side wall of the limiting boss (330), and the edge of the limiting boss (330) comprises a top edge, and the detection window (320) is arranged in the area of the limiting boss (330) close to the top edge.
3. The detection device of claim 2, wherein, The first driving mechanism (200) comprises a first driving source (210) and a first transmission assembly which are connected with each other, the first driving source (210) is arranged in the inner cavity (310), the first transmission assembly comprises a first transmission rod (220) and a gear (230) which are connected with each other, the ring-shaped side wall of the limiting boss (330) is provided with a mounting hole (331) which is in communication with the inner cavity (310), an end wall of the limiting boss (330) is provided with a positioning groove (332), one end of the first transmission rod (220) is connected with the first driving source (210), the other end of the first transmission rod (220) is rotatably arranged in the positioning groove (332), and a part of the gear (230) extends out of the inner cavity (310) through the mounting hole (331) and is engaged with internal teeth (410) on the ring-shaped shielding member (400).
4. The detection device of claim 3, wherein, At least one of the transmitter (110) and the receiver (120) further comprises a first pressing member (510), the first pressing member (510) and the gear (230) are sequentially sleeved on the first transmission rod (220), the first pressing member (510) is connected with the inner wall of the housing (300), in the extension direction of the first transmission rod (220), the gear (230) has a first side surface (231) and a second side surface (232) which are oppositely arranged, the first side surface (231) is limitedly matched with the end wall of the limiting boss (330), and the second side surface (232) is limitedly matched with the first pressing member (510).
5. The detection device of claim 1, wherein, At least one of the emitting member (110) and the receiving member (120) further comprises a second pressing member (520) provided with a first limiting groove (521) in the shape of a ring, the annular shielding member (400) is provided with a guide rib (420) extending along the circumference of the annular shielding member (400), the second pressing member (520) is sleeved on the annular shielding member (400), and the second pressing member (520) is connected with the outer wall of the shell (300), and the guide rib (420) is limited in the first limiting groove (521) in the axial direction of the annular shielding member (400).
6. The detection device of claim 5, wherein, At least two limiting ribs (522) are protruded from the sidewall of the first limiting groove (521), each limiting rib (522) is arranged at intervals along the circumference of the first limiting groove (521), and each limiting rib (522) is in sliding fit with the guide rib (420).
7. The detection device of claim 1, wherein, At least one of the emitting member (110) and the receiving member (120) further comprises a second driving mechanism (600) and a rotating member (700), the rotating member (700) is a bent member, at least part of the rotating member (700) is located in the annular shielding member (400), the second driving mechanism (600) comprises a second driving source (610) and a second transmission assembly connected with each other, the second driving source (610) is arranged in the inner cavity (310), one end of the second transmission assembly is connected with the rotating member (700) to drive the rotating member (700) to rotate relative to the shell (300).
8. The detection device of claim 7, wherein, The rotating member (700) comprises a first rotating rod (710) and a second rotating rod (720) connected with each other, the first rotating rod (710) extends along the radial direction of the annular shielding member (400), the second rotating rod (720) extends along the axial direction of the annular shielding member (400), and the second rotating rod (720) is arranged close to the inner wall of the annular shielding member (400), one end of the second transmission assembly penetrates through the shell (300) and is connected with the first rotating rod (710), and the rotation axis of the rotating member (700) coincides with the rotation axis of the annular shielding member (400).
9. The detection device of claim 8, wherein, At least one of the emitting member (110) and the receiving member (120) further comprises a cleaning brush (530) arranged on the side of the first rotating rod (710) facing the detection window (320).
10. The detection device of claim 8, wherein, The rotating member (700) further comprises a third rotating rod (730) connected with the second rotating rod (720), and at least part of the annular shielding member (400) is clamped between the second rotating rod (720) and the third rotating rod (730).
11. The detection device of claim 7, wherein, The first driving mechanism (200) comprises a first driving source (210) and a first transmission assembly connected with each other, the first transmission assembly comprises a first transmission rod (220) connected with the annular shielding member (400), the second transmission assembly comprises a second transmission rod (620) connected with the rotating member (700), at least one of the first transmission assembly and the second transmission assembly comprises a shaft coupling (630), the shaft coupling (630) connects the first driving source (210) and the first transmission rod (220), and / or the shaft coupling (630) connects the second driving source (610) and the second transmission rod (620); At least one of the emitting member (110) and the receiving member (120) further comprises a control member (800), the control member (800) is arranged in the inner cavity (310) and is electrically connected with the first driving source (210) and / or the second driving source (610), when the contacts on the shaft coupling (630) and the contacts on the control member (800) are in contact for a preset number of times, the control member (800) controls the first driving source (210) and / or the second driving source (610) to stop working.
12. The detection device of claim 7, wherein, The rotating direction of the annular shielding member (400) is opposite to the rotating direction of the rotating member (700), or the rotating direction of the annular shielding member (400) is the same as the rotating direction of the rotating member (700), and the rotating speed of the annular shielding member (400) is different from the rotating speed of the rotating member (700).
13. The detection device of claim 1, wherein, When the emitting member (110) and the receiving member (120) both comprise the annular shielding member (400), the rotating direction of the annular shielding member (400) of the emitting member (110) is opposite to the rotating direction of the annular shielding member (400) of the receiving member (120), or the rotating direction of the annular shielding member (400) of the emitting member (110) is the same as the rotating direction of the annular shielding member (400) of the receiving member (120), and the rotating speed of the annular shielding member (400) of the emitting member (110) is different from the rotating speed of the annular shielding member (400) of the receiving member (120).