Rainfall detection device and outdoor equipment

Abstract

The utility model relates to the technical field of rainfall detection, and discloses a rainfall detection device and outdoor equipment, and the rainfall detection device comprises a main body part, a detection electrode group, a control module and a protection part. The main body part is provided with a water collecting space with an opening and used for collecting rainwater; the detection electrode group is mounted in the water collection space and comprises at least two electrodes, the control module is electrically connected with the detection electrode group, and the rainfall state is detected through resistance change formed by conduction of the electrodes. The protection part is fixed to the main body part through a connecting structure, the size of the protection part is smaller than that of the opening of the water collecting space, and the protection part is located above a preset electrode to prevent rainwater from directly dripping on the electrode, so that misjudgment caused by instantaneous impact or water splashing is reduced. The device is reasonable in structure and accurate in detection, can be widely applied to outdoor equipment, and improves the intelligent level and operation stability of the equipment.

Description

TECHNICAL FIELD

[0001] The utility model relates to rain detection technical field further relates to a rain detection device and outdoor equipment. BACKGROUND

[0002] At present, the rain detection device commonly used by outdoor equipment is usually composed of a water storage platform and two exposed electrodes, and the electrodes determine whether precipitation occurs according to the change of liquid level. When rainwater accumulates to a certain liquid level, conduction will be formed between the electrodes, reflecting the existence of rainfall, and prompting whether the equipment needs to be shut down.

[0003] However, such detection device has significant defects: when raindrops directly impact the electrodes in free fall, the electrode conduction will be triggered without reaching the set water level, resulting in rainfall misjudgment. UTILITY MODEL CONTENT

[0004] In view of the above technical problems, the utility model aims at providing a rain detection device and outdoor equipment, which can effectively prevent rainwater from directly short-circuiting the electrodes and reduce misjudgment.

[0005] In order to achieve the above purpose, the utility model provides a rain detection device for outdoor equipment, comprising:

[0006] A main body part has an open water collecting space for containing rainwater;

[0007] A detection electrode group is arranged in the water collecting space, and the detection electrode group comprises at least two electrodes,

[0008] A control module is electrically connected with the detection electrode group to determine the rainfall state of the current working environment of the outdoor equipment through the resistance change formed by the conduction of the two electrodes;

[0009] A protection part is fixed to the main body part by a connecting structure, the size of the protection part is smaller than the opening of the water collecting space, and the protection part is arranged above at least one of the electrodes to block rainwater from directly falling on the corresponding electrode and reduce the misjudgment of rainfall state.

[0010] In some embodiments, the edge of the protection part is provided with a flow guide part for guiding external liquid to flow into the water collecting space along the surface of the protection part.

[0011] In some embodiments, the bottom of the protection part is provided with a first docking part, and the main body part is provided with a second docking part in the water collecting space, the first docking part and the second docking part are fixed by the connecting structure, and the height of the protection part is greater than the height of the corresponding electrode.

[0012] In some embodiments, a mutual cooperation anti-rotation structure is arranged between the first and second connecting portions, and when the first and second connecting portions are connected relative to each other, the two are mutually embedded through the anti-rotation structure to prevent the protective portion from rotating circumferentially relative to the main portion.

[0013] In some embodiments, the anti-rotation structure includes at least two pins and at least two slots.

[0014] The pins are symmetrically distributed on the end of the first connecting portion away from the protective portion, and the slots are arranged on the second connecting portion, and when the first and second connecting portions are connected, the pins on the first connecting portion are inserted into the slots of the second connecting portion to prevent the protective portion from rotating circumferentially.

[0015] Alternatively, the slots are symmetrically distributed on the end of the first connecting portion away from the protective portion, and the pins are arranged on the second connecting portion, and when the first and second connecting portions are connected, the pins on the second connecting portion are inserted into the slots of the first connecting portion to prevent the protective portion from rotating circumferentially.

[0016] In some embodiments, the connecting structure includes at least one fixing bolt, the first connecting portion is a columnar body, the first connecting portion has an assembly hole penetrating through the axial direction, and the assembly hole penetrates the surface of the protective portion to provide a connection point for the fixing bolt.

[0017] The second connecting portion is located at the bottom of the water collecting space and has a threaded hole arranged in the vertical direction, and the fixing bolt passes through the protective portion and the first connecting portion to form a threaded connection with the threaded hole.

[0018] In some embodiments, the detection electrode group includes a first electrode, a second electrode, and at least one high electrode, the first electrode is the lowest in height among the electrodes, and the height of the second electrode is greater than or equal to the height of the first electrode.

[0019] The height of the high electrode is greater than the height of the second electrode, and the outer periphery of the high electrode is provided with an insulating material, and the height of the insulating material is at least equal to the height of the second electrode, to prevent false judgment caused by accidental conduction of the high electrode by accumulated water.

[0020] In some embodiments, the protective portion is located at least above the high electrode, and the shape of the protective portion is circular or square or oval or irregular.

[0021] In some embodiments, the side wall of the main body part is provided with a drainage groove arranged along the height direction of the water collecting space, the drainage groove and the water collecting space being in communication for draining the accumulated water in the water collecting space, so that the control module can determine the external rainfall condition according to the drainage speed of the accumulated water and the accumulated water speed.

[0022] In another aspect, the utility model also provides an outdoor equipment, which comprises the rain amount detection device.

[0023] Compared with the prior art, the rain amount detection device and the outdoor equipment have the following beneficial effects:

[0024] The space shielding design of the protection part effectively prevents the vertical impact of raindrops on the electrode surface, avoids the instantaneous conduction when the water level does not reach the detection level, and eliminates the misjudgment caused by the free fall interference of raindrops from the physical level. At the same time, the size of the protection part is smaller than the opening of the water collecting space, which allows the rainwater to naturally flow into the detection area and realizes selective protection through local shielding, thereby ensuring the detection function and enhancing the anti-interference ability. BRIEF DESCRIPTION OF DRAWINGS

[0025] The above characteristics, technical features, advantages and implementation modes of the utility model will be further described in a clear and understandable manner in combination with the preferred embodiments and the accompanying drawings.

[0026] Figure 1 is a structure schematic view of the rain amount detection device in an embodiment of the application;

[0027] Figure 2 is a local explosion structure schematic view of an embodiment of the application;

[0028] Figure 3 is a structure schematic view of the protection part in an embodiment of the application;

[0029] Figure 4 is a partial structure schematic view of the main body part in an embodiment of the application.

[0030] Explanation of reference numerals: main body part 10; water collecting space 100; second butt joint part 101; threaded hole 1010; drainage groove 102; detection electrode group 20; first electrode 201; second electrode 202; first high part electrode 203; second high part electrode 204; protection part 30; flow guide part 300; first butt joint part 301; assembly hole 3010; bolt 401; slot 402; fixing bolt 50; insulating material 60. DETAILED DESCRIPTION

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, specific embodiments of the present application will be described below with reference to the drawings. Obviously, the drawings described below are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained from these drawings without creative labor, and other embodiments can also be obtained.

[0032] In order to make the drawing simple, only the parts related to the present application are shown in each drawing, which does not represent the actual structure of the product. In addition, in order to make the drawing simple and easy to understand, in some drawings, only one of the components with the same structure or function is shown, or only one of them is marked. In this paper, "one" not only means "only one", but also means "more than one" situation.

[0033] It should be further understood that the term "and / or" used in the specification and claims of the present application means any combination of one or more of the associated listed items and all possible combinations, and includes these combinations.

[0034] In this paper, it should be noted that unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0035] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0036] In addition, in the description of the present application, the terms "first", "second" and the like are only used for differentiation and description, and cannot be understood as indicating or implying relative importance.

[0037] Currently, the rain detection device commonly used in outdoor equipment usually adopts the electrode conduction detection principle. The device is composed of an open water storage platform and an electrode group arranged in the platform, and the electrode group includes at least two exposed metal electrodes. Its working principle is: when the rainwater enters the water storage platform through the opening of the water collection space and accumulates to a certain liquid level, the liquid medium between the electrodes forms a conductive path, causing the resistance value between the electrodes to change, and the central control unit detects the resistance change to determine whether it rains, and accordingly controls the start and stop of the outdoor equipment. However, this type of detection device has a significant technical defect: during natural rainfall, when raindrops vertically impact the high electrode in free fall, it may cause a temporary short circuit between the electrodes, causing the outdoor equipment to trigger the protection mode before reaching the set water level threshold, affecting the normal use of the outdoor equipment.

[0038] In one embodiment, referring to the description attached Figure 1 The rain detection device provided by the utility model can solve the problems in the prior art. As shown in the figure, the rain detection device includes a main body part 10, a detection electrode group 20, a control module, and a protection part 30. The main body part 10 has an open water collection space 100, which is used to collect precipitation in the environment and accumulate it inside the device, thereby providing a stable detection medium for the detection electrode group 20. The detection electrode group 20 is arranged in the water collection space 100 and includes at least two electrodes. The control module and the detection electrode group 20 are electrically connected, can detect the conduction condition between different electrodes, and calculate the current rainfall state based on the formed resistance change, thereby providing accurate environmental monitoring information.

[0039] Most importantly, the design of the protection part 30 in this application, the protection part 30 is fixed in the water collection space 100, and the size of the protection part is smaller than the opening of the water collection space 100, and is located above the preset one or more electrodes, aiming to prevent rainwater from directly falling on the electrodes and reduce the misjudgment caused by short-term rainfall impact or false triggering.

[0040] It can be understood that in the existing rain detection technology, due to the possibility of raindrops directly falling on the electrode surface, it is easy to cause temporary electrode conduction, thereby affecting the judgment of the rainfall state. This scheme sets the protection part 30, so that the rainwater does not directly fall on the electrode, but first accumulates naturally in the water collection space 100 of the main body part 10, thereby triggering the conduction of the detection electrode only when the water level accumulates to a sufficient height, ensuring that the judgment result is more accurate.

[0041] The height of the protection part 30 is greater than the height of the corresponding electrode, and the size of the protection part 30 is smaller than the opening of the water collecting space 100, so that the protection part 30 does not completely cover the opening of the water collecting space 100, and still ensures that the precipitation can smoothly enter the detection area, and the dual requirements of rainwater collection and false judgment protection are considered. The protection part 30 is fixed to the main body part 10 through the connecting structure, so that the protection part 30 can be reliably installed above the detection electrode, and the stability of the protection part 30 can be maintained even in outdoor conditions such as strong wind and vibration, and the protection part 30 is not easy to deviate or loosen.

[0042] The rain amount detection device of the present application can realize dynamic identification of different precipitation amounts based on the signal difference between the plurality of electrodes. For example, when there is slight precipitation, the water level may only reach part of the electrodes, and the control module can determine that it is a light rain environment according to a certain specific resistance value; when there is heavy precipitation, the water level rises rapidly, and at this time, another specific two electrodes are conductive, forming another specific resistance value, and the control module can identify it as moderate rain or heavy rain, so as to timely adjust the running state of the outdoor equipment.

[0043] Optionally, the surface of the protection part 30 is made of a hydrophobic material, so that the rainwater can be prevented from remaining on the surface of the protection part 30, and the rainwater collection efficiency is improved. In addition, the control module can combine the time parameter, such as the resistance change in a certain period of time, to avoid false judgment caused by transient conduction in a short period of time, and improve the detection stability.

[0044] Further, as shown in Figure 3 The edge of the protection part 30 is provided with a flow guide part 300, and the flow guide part 300 guides the external liquid to flow into the water collecting space 100 along the surface of the protection part 30, so that the rainwater is more uniform and controllable when entering the detection area. Moreover, since the rainwater is guided by the flow guide part 300 to flow into the water collecting space 100, the flow state is more stable, and high-speed dripping water droplets are not formed, so that the short-time false judgment caused by the direct impact of the water droplets on the electrode is effectively avoided.

[0045] In the embodiment, the flow guide part 300 adopts an inclined plane structure, but in different application environments, other forms such as arc surface flow guide or curved surface flow guide can also be adopted. The arc surface is used to guide the rainwater to flow more smoothly into the water collecting space 100, and the flow resistance is reduced.

[0046] In some cases, the flow guide part 300 and the protection part 30 can adopt an integrated forming structure to improve the weather resistance of the assembly and adapt to long-term outdoor use environment.

[0047] In one embodiment, as shown in Figure 2As shown, the bottom of the protection part 30 is provided with a first docking part 301, and the main body part 10 is provided with a second docking part 101 in the water collecting space 100, and the two are fixed by a connecting structure, so that the protection part 30 can be firmly installed on the main body part 10 and maintain a stable spacing to achieve its protection function. It should be noted that in this embodiment, the second docking part 101 is located at the bottom of the water collecting space 100, but in other embodiments, it can also be located at the side or a special mounting seat can be added at the upper part to realize the relative connection of the protection part 30 and the main body part 10.

[0048] Specifically, the connecting structure can adopt buckle type, magnetic type or threaded locking type, etc. to adapt to different installation needs and enhance the adaptability of the device. For example, buckle structures are designed on the first docking part 301 and the second docking part 101, so that the protection part 30 can be directly pressed and installed and firmly fixed, and can be replaced at the same time; or a magnetic material such as a magnet or a magnetic alloy is arranged on the first docking part 301 of the protection part 30, and a material that can be magnetically attracted such as a ferrous insert, stainless steel or other magnetically compatible materials is arranged at the corresponding position of the second docking part 101 of the main body part 10. When the protection part 30 approaches the main body part 10, the magnetic attraction can automatically complete the installation, while providing a certain adsorption force to ensure that the protection part 30 will not easily fall off during normal use.

[0049] In addition, in some embodiments, the cooperation of the first docking part 301 and the second docking part 101 can be designed as an adjustable height structure, so that the height of the protection part 30 can be adjusted according to different use needs to adapt to the rainfall detection accuracy requirements of different environments.

[0050] Based on the above embodiments, in one embodiment, an anti-rotation structure is arranged between the first docking part 301 and the second docking part 101, which can be embedded and matched when the two are connected to each other, effectively preventing the protection part 30 from rotating circumferentially relative to the main body part 10, and improving the reliability and long-term stability of the device.

[0051] Generally, a groove, a protrusion, a limiting block, a clamping groove or other structures can be selected on the first docking part 301 (the bottom of the protection part 30), and a protrusion, a groove or an embedded part matched therewith can be arranged on the second docking part 101 (the connecting area of the main body part 10), and through the geometric cooperation of the two, when the protection part 30 is installed to the main body part 10, the anti-rotation structure will be automatically embedded, ensuring that the protection part 30 will not rotate circumferentially when subjected to wind, vibration or external impact.

[0052] Meanwhile, in some embodiments, rubber pads, elastic materials or non-slip textures can also be added to the contact surfaces of the first docking part 301 and the second docking part 101 to further enhance the anti-rotation effect through friction. Moreover, sealing structures can be added between the first docking part 301 and the second docking part 101.

[0053] It can be understood that, due to the long-term outdoor environment of the rain detection device, it may be affected by wind, rain impact and material expansion and contraction caused by temperature changes, causing the protective part 30 to rotate slightly, thereby affecting its shielding effect and further affecting the accuracy of rain detection. Through the fitting of the anti-rotation structure, it is ensured that the protective part 30 is always in the predetermined position, avoiding changes in the shielding position and ensuring the stability of rain detection.

[0054] In addition, in a strong wind or vibration environment, the anti-rotation structure can provide additional mechanical limiting effect, ensuring that it will not loosen or deviate during long-term use, improving the durability of the equipment. In this embodiment, this anti-rotation structure can be combined with different fixing methods such as magnetic attraction connection, threaded connection, buckle connection, etc., to enhance the adaptability of the overall device and be suitable for different environmental and equipment installation requirements.

[0055] Based on the above embodiments, further as shown in Figure 3 and Figure 4 The anti-rotation structure includes at least two pins 401 and at least two slots 402 to ensure that the protective part 30 will not rotate circumferentially after being installed to the main part 10, while achieving stable connection.

[0056] This setting form can include the following schemes. The first scheme is that the first docking part 301 (i.e. the bottom of the protective part 30) is symmetrically provided with at least two pins 401 at the end away from the protective part 30, and the second docking part 101 (i.e. the connection area of the main part 10) is provided with corresponding slots 402 that can be precisely fitted with the pins 401 of the first docking part 301. When the protective part 30 is installed to the main part 10, the pins 401 are inserted into the slots 402, thereby effectively preventing the protective part 30 from rotating circumferentially; the second scheme is the opposite of the first scheme, that is, the first docking part 301 is symmetrically provided with at least two slots 402, and the second docking part 101 is provided with corresponding pins 401 that are inserted into the slots 402, which can also prevent the protective part 30 from rotating and displacing when affected by external wind, vibration, etc.

[0057] Of course, there is also a third scheme, that is, the first docking part 301 is provided with both pins 401 and slots 402, and the second docking part 101 is provided with corresponding slots 402 and pins 401, which are fitted in an alternating manner to achieve bidirectional limiting and further enhance stability.

[0058] In the embodiment, the mechanical fitting is formed by the slot 402 and the latch 401, effectively limiting the circumferential selection of the protection part 30, while the symmetrical distribution can ensure uniform stress and guide the correct installation of the protection part 30, avoiding loose connection or misalignment due to assembly error.

[0059] In one embodiment, the connecting structure adopts a fixed bolt 50 to threadedly connect with the butt joint part, ensuring that the protection part 30 can maintain a reliable fixed state after being installed to the main body part 10, and can be easily disassembled when maintenance or replacement is required.

[0060] Specifically, as shown in Figures 2 to 4 The connecting structure includes at least one fixed bolt 50, and the first butt joint part 301 is designed as a columnar body structure and has an assembly hole 3010 penetrating the axial direction thereof, which extends along the axial direction of the columnar body and penetrates the surface of the protection part 30, forming a complete through-hole structure to provide a penetration path for the fixed bolt 50 to achieve fastening connection.

[0061] Correspondingly, the second butt joint part 101 is provided with a threaded hole 1010 arranged in the vertical direction, and the fixed bolt 50 penetrates the surface of the protection part 30, the assembly hole 3010 of the first butt joint part 301, and is screwed into the threaded hole 1010 of the second butt joint part 101, to achieve stable connection between the protection part 30 and the main body part 10; through the threaded locking action, the protection part 30 can be firmly fixed to the main body part 10, and when disassembly is required, the connection can be quickly released by unscrewing the bolt.

[0062] As can be understood, in the present application, the threaded connection method is adopted, so that the user can quickly disassemble and reinstall when cleaning, replacing or repairing the protection part 30, improving the convenience of maintenance.

[0063] At the same time, in the implementation of the present application, since the size of the protection part 30 is relatively small, one fixed bolt 50 can be used for fixation, but if a larger protection part 30 is required to protect a large number of electrodes from misjudgment, the number of fixed bolts 50 can be increased, and multiple columnar structures can be used to cooperate with multiple threaded holes 1010, to provide more uniform stress and enhance the reliability of the connection.

[0064] In one embodiment, the detection electrode group 20 includes a first electrode 201, a second electrode 202, and at least one high electrode. Among them, the first electrode 201 is the lowest electrode, which is used to first contact the liquid in the water collecting space 100, and the height of the second electrode 202 is greater than or equal to that of the first electrode 201, which can first form conduction with the first electrode 201 when there is a certain amount of water, which can be used to judge the small rainfall condition.

[0065] The height of the high electrode is greater than the height of the second electrode 202, which is used to detect the state of higher water level (such as heavy rain or extreme rainfall conditions), and at the same time, in order to prevent the high electrode from being misdirected when the external precipitation is small, the reference specification Figure 4 In this application, an insulating material 60 is arranged on the outer periphery of the high electrode. Specifically, the height of the insulating material 60 arranged on the outer periphery of the high electrode is at least equal to the height of the second electrode 202.

[0066] It should be noted that in this embodiment, by combining multiple electrodes with different heights, the change of precipitation can be detected step by step, which is suitable for accurate identification of different rainfall intensities. Different electrode combinations can form different resistance values, and by changing the resistance, it can be identified that the outdoor equipment is in which working condition, such as light rain, moderate rain, heavy rain, etc.

[0067] Moreover, due to environmental factors (such as water flow impact, uneven distribution of water accumulation), the high electrode may be accidentally turned on, causing false rainfall state judgment, and adding insulating material 60 on the outer periphery of the high electrode can effectively reduce the incidence of such misjudgment. The height of the insulating material 60 is at least equal to the height of the second electrode 202, which ensures that the high electrode will not trigger a false signal by accidentally contacting water before the second electrode 202 is turned on.

[0068] It can be understood that by adjusting the number of high electrodes, the device can judge different changes in rain intensity through multiple resistance changes. Moreover, as the number of high electrodes increases, the system can support more rainfall level judgments, adapt to different use environments and needs. However, although the number of high electrodes can be increased to support multiple rain intensity judgments, in order to avoid excessive number of electrodes leading to complex internal circuit, rising cost and difficult maintenance, the number of electrodes is still kept within a proper range, ensuring the system is simple and reliable.

[0069] As shown in Figure 4 The number of high electrodes is two, which are the first high electrode 203 and the second high electrode 204, the height of the second high electrode 204 is greater than the height of the first high electrode 203, and the height of the first high electrode 203 is greater than the height of the second electrode 202, thereby forming at least three electrodes with different heights in the detection device.

[0070] When the water accumulation in the water collecting space 100 reaches a certain height and the first electrode 201 and the second high electrode 204 are turned on, the system forms a first specific resistance value, which is used to judge that the outdoor equipment is in a heavy rain environment. When the water accumulation in the water collecting space 100 turns on the first electrode 201 and the first high electrode 203, the system forms a second specific resistance value, which is used to judge that the outdoor equipment is in a moderate rain or heavy rain environment. Similarly, when the water accumulation turns on the first electrode 201 and the second electrode 202, a third specific resistance value is formed, indicating that it is in a light rain environment.

[0071] By setting only four electrodes, the system can achieve accurate rainfall determination, while avoiding the complexity of the line caused by too many electrodes, ensuring the stability and easy maintenance of the device. Each pair of conducting electrodes can produce a unique resistance, thereby achieving accurate precipitation intensity determination and ensuring that the device responds appropriately in different rainfall environments.

[0072] Although the current scheme uses four electrodes, by simply adjusting and increasing the number of electrodes, it can adapt to different liquid level detection requirements, increase more rain intensity judgment standards, and improve the flexibility of the device.

[0073] Based on the above, the protection part 30 is at least located above the high electrode, ensuring that rainwater does not directly fall on the surface of the high electrode, reducing the possibility of misjudgment; in some cases, the protection part 30 can cover the second electrode 202 or the first electrode 201 at the same time, providing more comprehensive protection.

[0074] Optionally, the shape of the protection part 30 is one of a circle, a square, an oval, and an irregular shape, for example, a circle, which is suitable for uniformly covering the electrode group and helps to guide rainwater from all around to the water collection space 100.

[0075] In some implementations, the detection electrode group 20 is electrically connected to the control module through wires, and the wires are made of weather-resistant materials to ensure reliable connection in various weather conditions. The change in the conducting state detected by the detection electrode group 20 is transmitted to the control module through the wires, and the control module determines the intensity of the rain according to different resistances. When detecting the conduction of electrodes with different liquid levels, the control module will determine that the current rainfall is in a light rain, moderate rain, or heavy rain environment, and take appropriate measures accordingly.

[0076] In one embodiment, as shown in Figure 1 The side wall of the main body part 10 is provided with a drainage groove 102, which is arranged along the height direction of the water collection space 100 and communicates with the water collection space 100, for draining the accumulated water in the water collection space 100, so that the control module can determine the external rainfall condition according to the drainage speed and accumulation speed of the accumulated water.

[0077] In the rain detection process, the accumulated water passes through two electrodes in the conduction detection electrode group 20 to form a specific resistance value, and the control module determines the rain condition according to the resistance value. In a light rain environment, the precipitation speed is slow, and the drainage groove 102 can quickly drain the accumulated water, so that the water level in the water collection space 100 is low. At this time, only the first electrode 201 and the second electrode 202 may be in conduction, and the system determines that it is light rain; in a heavy rain or rainstorm environment, the precipitation speed is greatly increased, which exceeds the drainage capacity of the drainage groove 102, causing the water level in the water collection space 100 to rise rapidly. When the water level rises to the height of the high electrode, the electrode is submerged and in a conduction state, and the system can determine whether it is in heavy rain or rainstorm by combining the duration of electrode conduction.

[0078] It should be noted that the size of the drainage groove 102 should be designed in consideration of the size of the water collection space 100 and the expected rain detection range, so as to ensure that in light rain, the drainage groove 102 can quickly drain the accumulated water, so that the electrode conduction state is stable, and the resistance value changes in accordance with the characteristics of light rain; in heavy rain, it can also withstand a certain drainage pressure, although the drainage speed is not as fast as the water accumulation speed, but it can assist the control module to determine the rainfall by the change of electrode conduction.

[0079] In addition, it can be understood that generally, the bottom of the drainage groove 102 is arranged at the lowest part of the water collection space 100, so as to maximize the drainage of the accumulated water, so that the electrode conduction state truly reflects the rainfall condition.

[0080] The drainage groove 102 in the embodiment can timely drain the accumulated water in the water collection space 100, avoid the electrode from being soaked for a long time due to excessive accumulated water, prevent electrode corrosion or conduction abnormality caused by short circuit, and effectively prolong the service life of the rainfall detection device. Moreover, it can also prevent the water in the water collection space 100 from being drained in a non-rain state or a light rain state, thereby preventing misjudgment of the rainfall condition.

[0081] On the other hand, by combining the drainage rate of the drainage groove 102 with the water accumulation rate, the system not only relies on the single electrode conduction condition, but also dynamically evaluates the rainfall trend, thereby improving the accuracy and reliability of rainfall measurement.

[0082] Optionally, a flow sensor can be installed in the drainage groove 102 to accurately measure the drainage speed in real time, so as to provide more accurate data for the control module, so that the control module can combine the electrode conduction resistance value to more accurately determine the rainfall grade. Alternatively, an adjustable valve can be arranged at the outlet of the drainage groove 102, and the control module can automatically adjust the opening degree of the valve according to the electrode conduction condition and the measured resistance value.

[0083] In one embodiment, according to another aspect of the utility model, the utility model further provides an outdoor equipment, including the rainfall detection device above. Through the protection part 30 in the rainfall detection device, rainwater can be blocked from directly dropping to the corresponding electrode, thereby reducing the rain state misjudgment caused by the direct impact of raindrops on the electrode.

[0084] In the complex and changeable environment outdoors, the falling situation of raindrops is affected by various factors, and the presence of the protection part 30 can greatly improve the accuracy of the rainfall detection device, provide reliable rainfall data for the outdoor equipment, and ensure that the outdoor equipment makes correct operation based on accurate rainfall information.

[0085] It should be noted that the above embodiments can be freely combined as needed. The above is only a preferred embodiment of the utility model, and it should be pointed out that for ordinary skilled persons in the art, without departing from the principles of the utility model, a number of improvements and refinements can be made, and these improvements and refinements should also be considered within the protection scope of the utility model.

Claims

1. A rain detection device, characterized by, The raindrop detection device comprises a main body having an open water collecting space for collecting rainwater, a detection electrode group arranged in the water collecting space, the detection electrode group comprising at least two electrodes, a control module electrically connected to the detection electrode group to determine the raindrop state of the current working environment of the outdoor device by the change of the resistance formed by the two electrodes, and a protection part fixed to the main body by a connecting structure, the size of the protection part being smaller than the opening of the water collecting space, and the protection part being arranged above at least one of the electrodes to prevent rainwater from directly falling on the corresponding electrode, thereby reducing the misjudgment of the raindrop state.

2. The raindrop detection device according to claim 1, wherein an edge of the protection part is provided with a flow guide part for guiding external liquid to flow along the surface of the protection part into the water collecting space.

3. The raindrop detection device according to claim 1, wherein a bottom of the protection part is provided with a first docking part, and the main body is provided with a second docking part in the water collecting space, the first docking part and the second docking part are fixed by the connecting structure, and the height of the protection part is greater than the height of the corresponding electrode.

4. The raindrop detection device according to claim 3, wherein a mutual cooperation anti-rotation structure is arranged between the first docking part and the second docking part, when the first docking part and the second docking part are connected, the two are embedded with each other through the anti-rotation structure to prevent the protection part from rotating circumferentially relative to the main body.

5. The raindrop detection device according to claim 4, wherein the anti-rotation structure comprises at least two latches and at least two slots; the latches are symmetrically distributed on the end of the first docking part away from the protection part, and the slots are arranged on the second docking part, when the first docking part and the second docking part are connected, the latches on the first docking part are inserted into the slots of the second docking part to prevent the protection part from rotating circumferentially; or, the slots are symmetrically distributed on the end of the first docking part away from the protection part, and the latches are arranged on the second docking part, when the first docking part and the second docking part are connected, the latches on the second docking part are inserted into the slots of the first docking part to prevent the protection part from rotating circumferentially.

6. The raindrop detection device according to any one of claims 3-5, wherein the connecting structure comprises at least one fixing bolt, the first docking part is a columnar body, the first docking part has an assembly hole penetrating through the axial direction, and the assembly hole penetrates the surface of the protection part to provide a connection point for the fixing bolt; the second docking part is located at the bottom of the water collecting space and has a threaded hole arranged in the vertical direction, and the fixing bolt passes through the protection part and the first docking part to form a threaded connection with the threaded hole.

7. The raindrop detection device according to any one of claims 1-5, wherein ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The detection electrode group comprises a first electrode, a second electrode and at least one high electrode, the first electrode is the lowest in height among the electrodes, and the height of the second electrode is greater than or equal to the height of the first electrode; The height of the high electrode is greater than the height of the second electrode, and the outer periphery of the high electrode is provided with an insulating material, the height of the insulating material is at least equal to the height of the second electrode, for preventing the accidental conduction of the high electrode caused by the accumulated water to cause misjudgment.

8. The rain detection device according to claim 7, characterized in that, The protection part is at least located above the high electrode, and the shape of the protection part is circular or square or oval or irregular.

9. The rain detection device according to any one of claims 1-5, 8, characterized in that, The side wall of the main part is provided with a drainage groove, the drainage groove is arranged along the height direction of the water collecting space, the drainage groove and the water collecting space are connected, for draining the accumulated water in the water collecting space, and then enabling the control module to judge the external rain condition according to the drainage speed and the accumulated water speed.

10. An outdoor device characterized by comprising: Including: The rain detection device according to any one of claims 1-9.

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