WO2019042227A1

WO2019042227A1 - Smart umbrella and method for automatically keeping out rain

Info

Publication number: WO2019042227A1
Application number: PCT/CN2018/102249
Authority: WO
Inventors: 卫创; 张晓�
Original assignee: 京东方科技集团股份有限公司
Priority date: 2017-08-28
Filing date: 2018-08-24
Publication date: 2019-03-07
Also published as: CN109419112B; CN109419112A

Abstract

A smart umbrella and a method for automatically keeping out rain. The smart umbrella can: detect a wind direction and an air speed Vw in the current wind direction; detect the pressure intensity of a raindrop on an umbrella cover (2); set a controller (3) to determine a pressure intensity value P detected by a second detection device (6) that is against a wind direction , determine the fall speed vr of the raindrop according to vw, P and a preset correspondence between pressure intensities and raindrop fall speeds, and determine a first angle θ according to vw and vr; and control the movement of the umbrella cover (2), so that an angel between a central axis of the umbrella cover (2) and an umbrella handle (1) is θ.

Description

Intelligent umbrella and automatic rain blocking method

Technical field

The present disclosure relates to the technical field of an umbrella device, and in particular to a smart umbrella and an automatic rain blocking method.

Background technique

Umbrellas are a must-have tool for people to rain. However, when using an umbrella, the parachute often needs to adjust the direction and position of the umbrella in accordance with the condition of the rain to avoid being wet by the rain. In the rainy and windy weather, the wind will change the direction of the rain, causing the originally falling rain to become inclined. In this case, the parachute can only manually adjust the direction and position of the umbrella according to the wind direction and wind speed, but the wind direction and wind speed are sometimes constantly changing, which makes it difficult for the parachute to make adjustments in time, especially in the wind direction. In the case of rapid changes and high wind speeds.

Therefore, there is a need for a smart umbrella and an automatic rain protection solution to solve the above technical problems.

Summary of the invention

The present disclosure provides a smart umbrella comprising: a handle, a canopy, a controller, a first detecting device, an adjusting device and at least two second detecting devices, wherein the first detecting device is located above the umbrella surface, And configured to detect a wind direction and a wind speed v _{w of} the wind downward, and send the wind direction and the wind speed v _w to the controller; the second detecting device is disposed on the umbrella surface and configured to detect raindrops Applying pressure to the canopy and transmitting the detected pressure value to the controller; the controller is configured to: determine a pressure value P detected by the second detecting device facing the wind direction; The downward wind speed v _w , the pressure value P detected by the second detecting device facing the wind direction, and the corresponding relationship between the preset pressure and the rain drop falling speed determine the raindrop falling speed v _r , and according to the a wind speed v _w , a raindrop falling speed v _r to determine a first angle θ; and controlling the adjusting device to tilt the umbrella face against the wind direction to between the central axis of the canopy and the handle Angle adjustment to first angle θ And the adjusting device is disposed at a junction of the handle and the canopy, and is configured to adjust an angle between a central axis of the canopy and the handle under the control of the controller.

In one embodiment, the second detecting device is uniformly distributed in a ring shape on the umbrella surface.

In one embodiment, the first angle θ is 0-90°.

In one embodiment, the first detecting device is provided with a wind vane, and the direction of the wind vane changes as the wind direction changes; the adjusting device is further configured to: adjust the umbrella surface around the umbrella surface and the The angle at which the connection point of the handle is horizontally rotated; the controller is further configured to: when the smart umbrella is opened, control the adjusting device to adjust the horizontal rotation of the canopy so that the initial direction and the wind direction of the wind vane The reference direction is the same.

In one embodiment, the first detecting device is further configured to: detect a second angle ω of the wind vane rotation, and send the second angle ω to the controller, the second angle ω is An angle between the wind direction and the wind direction reference direction; the controller is further configured to: adjust the angle between the central axis of the canopy and the handle to be first After the angle θ, or before determining the pressure value P detected by the second detecting device facing the wind direction, the adjusting device adjusts the canopy to horizontally rotate the second angle ω according to the second angle ω, So that the wind vane is the same as the wind direction reference direction.

In one embodiment, the first detecting device is disposed at a non-grip end of the handle and the controller is disposed inside the handle.

In one embodiment, the adjustment device includes: a first motor and a universal joint, wherein the universal joint is coupled to the canopy, the first motor is disposed inside the handle and is The universal joints are connected and arranged to drive the gimbal rotation to adjust the first angle θ.

In one embodiment, the adjustment device further includes a second motor and a connecting rod, wherein the connecting rod is disposed inside the handle and connected to the universal joint, and the second motor is disposed at the The inside of the handle is connected to the link and is arranged to drive the link to rotate to adjust the second angle ω.

In one embodiment, the smart umbrella further includes a display device and a voice recognition device, wherein the display device is disposed on the handle and is configured to display the first angle θ or display the first angle θ and the second angle ω, the voice recognition device is disposed on the handle and configured to receive a voice command of an umbrella holder, convert the voice command into a control command, and send the control command Giving the controller; the controller is further arranged to control the adjustment device in accordance with the control command.

The present disclosure also provides a method of automatically blocking rain by a smart umbrella, the method comprising the steps of: detecting, by the first detecting device, a wind direction and a wind speed v _w of the wind; the second detecting device detecting a pair of raindrops canopy pressure; the controller determines the direction facing the second detecting means detects the pressure value P; the wind speed v _w in the wind, the wind direction facing the detecting means detects the second Determining a relationship between the pressure value P and a preset pressure and a falling speed of the raindrop to determine a raindrop falling speed v _r , and determining a first angle θ according to the wind speed v _w and the raindrop falling speed v _r ; The adjusting device tilts the umbrella face against the wind direction, and the angle between the central axis of the canopy and the handle is adjusted to a first angle θ.

In one embodiment, the step of the controller determining the first angle θ comprises the steps of: calculating a wind pressure value Pw, P _w =0.5 ρv _w ² , where ρ is the air density; calculating the pressure difference ΔP, ΔP=P -Pw; determining a raindrop falling velocity v _r according to a correspondence relationship between the ΔP and a preset pressure and a raindrop falling speed; and calculating an adjustment angle reference value θ ₀ ,

And determining a first angle θ within a range of [θ ₀ - Δθ, θ ₀ + Δθ], where Δθ is a preset value.

In one embodiment, the step of determining the first angle θ within the range of [θ ₀ - Δθ, θ ₀ + Δθ] comprises the steps of: determining within the range of [θ ₀ - Δθ, θ ₀ + Δθ] m sampling values (θ ₁ , θ ₂ , ..., θ _m ), m ≥ 2; adjusting the angle between the central axis of the canopy and the handle to the m Sampling values (θ ₁ , θ ₂ , ..., θ _m ), and respectively recording the m sample values (θ ₁ , θ ₂ , ..., θ _m ) corresponding to each other a pressure value (P ₁ , P ₂ , ..., P _m ) detected by the second detecting device of the wind direction; and determining (P ₁ , P ₂ , ..., P _m ) The maximum value P _max in the middle, and the sample value corresponding to P _max is taken as the first angle θ.

In one embodiment, after the step of adjusting the angle between the central axis of the canopy and the handle is a first angle θ, the method further comprises the step of: the controller acquiring a pressure value P′ detected by the second detecting device of the wind direction, and calculating a difference between P′ and P _max ; the controller compares a difference between P′ and P _max with a preset threshold, if P′ and The difference between P _max is greater than a preset threshold, and the first angle θ is re-determined.

In one embodiment, the first detecting device is provided with a wind vane, and the direction of the wind vane changes with the wind direction. The method further includes the following steps: when the smart umbrella is turned on, the controller adjusts The canopy is horizontally rotated around an angle at which the canopy is connected to the handle, such that the initial direction of the wind vane is the same as the wind direction reference direction.

In one embodiment, the method further comprises the step of: the first detecting means detecting a second angle ω of the wind vane rotation, the second angle ω being between the wind direction and the wind direction reference direction An angle after the step of adjusting the angle between the central axis of the canopy and the handle is a first angle θ, or in the determining of the second detecting device facing the wind direction Before the step of the pressure value P, the method further comprises the step of: the controller controlling the canopy to horizontally rotate the second angle ω according to the second angle ω, so that the wind direction and the wind direction reference direction the same.

In one embodiment, the smart umbrella further includes a display device and a voice recognition device, the method further comprising the steps of: displaying the first angle θ or displaying the first angle θ and the first a second angle ω; the voice recognition device receives a voice command of the parasol, converts the voice command into a control command; and the controller connects the central axis of the canopy with the handle according to the control command The angle is adjusted to a first angle θ or the angle between the central axis of the canopy and the handle is adjusted to a first angle θ and the canopy is controlled to horizontally rotate the second angle ω.

DRAWINGS

FIG. 1a is a schematic structural diagram of a smart umbrella provided by the present disclosure.

FIG. 1b is a schematic diagram of a module of a smart umbrella provided by the present disclosure.

FIG. 2 is a schematic diagram of the use state of the smart umbrella provided by the present disclosure.

FIG. 3 is a schematic diagram of a rotating device of a smart umbrella provided by the present disclosure.

FIG. 4 is a schematic flow chart of automatically using the smart umbrella to prevent rain in the present disclosure.

Detailed ways

The technical solutions in the present disclosure will be clearly and completely described below in conjunction with the drawings in the present disclosure. It should be understood that the described embodiments are only a part of the embodiments of the disclosure, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present disclosure without departing from the inventive scope will fall within the scope of the present disclosure.

The present disclosure provides a smart umbrella, as shown in FIG. 1a, FIG. 1b and FIG. 2, the smart umbrella comprises: a handle 1, a canopy 2, a controller 3, a first detecting device 4, an adjusting device 5, and at least Two second detection devices 6. The adjustment device 5 is connected to the canopy 2 and is arranged to adjust the angle between the central axis of the canopy 2 and the handle 1. The angle is also the pitch angle of the canopy 2 relative to the handle 1 . The central axis of the canopy 2 is perpendicular to the top section of the canopy 2.

The first detecting device 4 is located above the umbrella surface 2, that is, at the umbrella tip portion of the smart umbrella, and is arranged to detect the wind direction and the wind downward wind speed _vw , and transmit the detected wind direction and wind speed _vw to the controller 3. .

The second detecting device 6 is disposed on the canopy surface 6 and is arranged to detect the pressure of the raindrop on the canopy surface and to transmit the detected pressure value to the controller 3. In the embodiment of the present disclosure, the second detecting device 6 is evenly distributed on the canopy 2 in a ring shape. The second detecting device 6 may be a pressure sensor.

Generally, the falling speed of the raindrop has a certain correspondence with the pressure exerted by the raindrop on the canopy 2, for example, the greater the falling speed of the raindrop, the greater the pressure exerted by the raindrop on the canopy 2. The corresponding relationship between the pressure and the falling speed of the raindrop is pre-set in the controller 3. Therefore, the falling speed of the raindrop can be obtained by detecting the pressure of the raindrop on the canopy surface and querying the corresponding relationship.

The controller 3 is arranged to determine a pressure value P detected by the second detecting device 6 facing the wind direction; a pressure detected by the second detecting device 6 facing the wind direction according to the wind speed v _{w of} the wind downward a value P, and a correspondence between a preset pressure and a raindrop falling speed to determine a raindrop falling speed v _r , and determining a first angle θ according to the wind speed v _w and the raindrop falling speed v _r ; and controlling the adjusting device The canopy is inclined toward the wind direction, and an angle between a central axis of the canopy and the handle is adjusted to a first angle θ.

The first angle θ ranges from 0 to 90°, that is, the canopy 2 can be rotated by a maximum of 90° with respect to the handle 1 in the vertical direction. In one embodiment, the first angle θ may range from 0 to 45 degrees.

The smart umbrella provided by the present disclosure may: use the first detecting device 4 to detect the wind direction and the wind speed v _{w of the} current wind; use the second detecting device 6 disposed on the canopy 2 to detect the pressure of the raindrop on the canopy; The device 3 determines the pressure value P detected by the second detecting device 6 facing the wind direction; determines the raindrop falling speed v _r according to the correspondence between v _w , P and the preset pressure and the falling speed of the raindrop, and The first angle θ is determined according to v _w and v _r ; and the canopy 2 is moved by controlling the adjustment device 5 such that the central axis of the canopy 2 and the handle 1 are at an angle θ. Therefore, the smart umbrella of the present disclosure can automatically adjust the state of the canopy 2 according to the current wind direction, wind speed, and rainfall size, so that the canopy 2 can be aligned with the direction in which the raindrop falls, thereby achieving a better rainproof effect; The umbrella holder can control the umbrella in time and accurately without having to adjust the state of the umbrella to effectively block the wind and rain. Especially in the case that the wind direction changes rapidly and the wind speed is large, the smart umbrella can effectively solve the problem that the umbrella person cannot adjust the rainwater caused by the rain umbrella in time.

The controller 3 may be arranged to determine the first angle θ by: calculating the wind pressure value Pw, P _w =0.5ρv _w ² , where ρ is the air density; calculating the pressure difference ΔP, ΔP=P-Pw; Determining the relationship between ΔP and the preset pressure and the falling speed of the raindrop to determine the raindrop falling velocity v _r ; calculating the adjusted angle reference value θ ₀ ,

In one embodiment, Δθ may be 5°-20°.

A pressure difference [Delta] P between the pressure value P 6 to the controller 3 may detect the current wind direction and facing the second detecting means by calculating a current wind speed v _w in the direction of pressure Pw umbrella, ΔP reflects whether rain the size of. By querying the correspondence between the pressure and the falling speed of the raindrop, the raindrop falling velocity v _r can be determined. The greater the rain, the greater the raindrop velocity v _{r and the} greater the pressure on the canopy, and vice versa. Since the raindrop falling speed v _r obtained by the correspondence between the query pressure and the raindrop falling speed is an estimated value in an ideal state, the adjustment angle reference obtained from the current wind downward wind speed v _w and the raindrop falling speed v _r The value θ ₀ is the initial predicted angle of rotation of the canopy, which is not accurate. It is necessary to further determine an accurate adjustment angle θ (i.e., the first angle) within the range of [θ ₀ - Δθ, θ ₀ + Δθ].

The controller 3 is arranged to determine the first angle θ within the range of [θ ₀ - Δθ, θ ₀ + Δθ] by the following steps: determining m sample values within the range of [θ ₀ - Δθ, θ ₀ + Δθ] (θ ₁ , θ ₂ , ..., θ _m ), m ≥ 2; the control adjusting device 5 adjusts the angle between the central axis of the canopy 2 and the handle 1 to the m sample values, respectively (θ ₁ , θ ₂ , ..., θ _m ), and respectively recording the m sample values (θ ₁ , θ ₂ , ..., θ _m ) corresponding to the said The pressure value (P ₁ , P ₂ , ..., P _m ) detected by the second detecting device 6 of the wind direction; and the determination (P ₁ , P ₂ , ..., P _m ) The maximum value P _max and the sample value corresponding to P _max are taken as the first angle θ.

In one embodiment, m sample values θ ₁ , θ ₂ , ..., θ _{m may} be obtained at the same interval in the range of [θ ₀ - Δθ, θ ₀ + Δθ].

Since the smart umbrella needs to adjust the angle between the central axis of the canopy 2 and the handle 1 to m sampling values (θ ₁ , θ ₂ , ..., θ _m ), and then sequentially detect the umbrella surface. The pressure value of the raindrop on the canopy when the central axis of 2 is at an angle different from the angle of the handle 1, so as to determine the most reasonable first angle θ, therefore, the adjustment time cannot be too long or too short, that is, sampling The quantity cannot be too much or too little. If the number of samples is too large, the adjustment time will be increased, resulting in the umbrella surface 2 not being in the optimal rain-proof state for a long time during the adjustment process, thus affecting the rain-proof effect; if the number of samples is too small, the first result is obtained. The angle θ may not be the optimal angle, which also affects the rain blocking effect. Therefore, in order to balance the rain prevention effect and the adjustment time, the number of samples m may be 8-10.

In one embodiment, the controller 3 is further configured to: after controlling the adjustment device 5 to adjust the angle between the central axis of the canopy 2 and the handle 1 to a first angle θ, obtain the first dimension facing the wind direction The pressure value P′ detected by the second detecting device 6; the difference between P′ and P _{max is} calculated; and when the difference between P′ and P _max is greater than a preset threshold, the first angle θ is re-determined.

Since the wind direction, the wind speed, and the rain force are constantly changing, after adjusting the angle between the central axis of the canopy 2 and the handle 1 to the first angle θ, it is necessary to continue to detect the pressure of the raindrop on the canopy 2. If the pressure value P _{max of the} current raindrop on the canopy 2 and the canopy 2 are at the first angle θ, the difference between the pressure values P _{max is} large, indicating that the state of the canopy 2 is not optimal at this time, and therefore needs to be re-determined. The first angle θ is adjusted again.

As shown in FIG. 1a, a wind vane 41 is disposed on the first detecting device 4. The direction of the wind vane 41 may vary with the direction of the wind. Specifically, the direction indicated by the arrow of the wind vane 41 is the current wind direction.

The adjusting device 5 is also arranged to adjust the angle at which the canopy 2 rotates horizontally around the connection point of the canopy 2 with the handle 1.

The controller 3 is further arranged to control the adjusting device 5 to horizontally rotate the canopy 2 when the smart umbrella is opened, so that the initial direction of the wind vane 41 is the same as the wind direction reference direction. The wind direction reference direction may be a direction defined by the manufacturer, which is preset in the controller 3. That is to say, when the smart umbrella is initialized, the wind direction indicator 41 is adjusted to be consistent with the wind direction reference direction, so as to ensure the accuracy of the subsequent wind direction and wind speed detection.

In one embodiment, as shown in FIG. 2, the first detecting device 4 is further arranged to detect a second angle ω at which the wind vane 41 rotates and to transmit a second angle ω to the controller 3. The second angle ω is an angle between the wind direction and the wind direction reference direction.

The controller 3 is further arranged to: after the control adjustment device 5 adjusts the angle between the central axis of the canopy 2 and the handle 1 to a first angle θ, or in the determination of the second detection device 6 against the wind direction Before the pressure value P is reached, the adjustment device 5 is controlled to rotate the canopy 2 horizontally by the second angle ω according to the second angle ω so that the wind direction indicator 41 is identical to the wind direction reference direction.

That is, once the wind direction changes, the wind can blow the wind direction indicator 41 horizontally to rotate the second angle ω. At this time, the direction of the wind direction indicator 41 is no longer coincident with the wind direction reference direction, and the first detecting device 4 detects the rotation of the wind direction indicator 41. Two angles ω. In order to adapt to the change of the wind direction, it is necessary to rotate the canopy 2 horizontally, that is, to adjust the canopy 2 to rotate the second angle ω in the horizontal direction. It should be noted that the first angle θ may be adjusted by adjusting the second angle ω, or the first angle θ may be adjusted first and then the second angle ω may be adjusted.

In one embodiment, the first detecting device 4 is disposed at the non-grip end of the handle 1, and the controller 3 is disposed inside the handle 1.

In one embodiment, the second angle ω is 0-360°.

The specific structure of the adjusting device 5 will be described in detail below with reference to FIG.

As shown in FIG. 3, the adjusting device 5 includes a first motor (not shown) and a universal joint 51, wherein the universal joint 51 is connected to the canopy 2, and the first motor is disposed inside the handle 1 and with the universal joint The segments 51 are connected and are arranged to drive the universal joint 51 to rotate to adjust the first angle θ.

In one embodiment, as shown in FIG. 3, the adjustment device 5 further includes a second motor (not shown) and a link 52, wherein the link 52 is disposed inside the handle 1 and connected to the universal joint 51, The second motor is disposed inside the handle 1 and connected to the link 52, and is arranged to drive the link to rotate to adjust the second angle ω.

In an embodiment, the second motor may be disposed at the grip end of the handle 1, and the first motor may be disposed at the non-grip end of the handle 1 and above the canopy 2. Thus, the first motor does not affect the rotation of the link 52 to avoid mutual interference.

In one embodiment, the universal joint 51 is a ball and socket joint, so that the universal joint 51 can be rotated in the vertical direction under the driving of the first motor, thereby adjusting the pitch angle of the canopy 2 relative to the handle 1 And rotating in the horizontal direction under the driving of the second motor, thereby adjusting the horizontal position of the canopy 2.

In another embodiment of the present disclosure, after calculating the first angle θ and the second angle ω, the controller 3 does not directly adjust the canopy state according to the first angle θ and the second angle ω, but instead The angle θ and the second angle ω are displayed for reference by the parachute, and the parachute determines whether the state of the canopy 2 is automatically adjusted according to the calculation result of the smart umbrella.

Specifically, as shown in FIG. 1a and FIG. 2, the smart umbrella may further include a display device 7 and a voice recognition device 8. The display device 7 may be a display screen which is disposed on the handle 1 and is arranged to display a first angle θ or to display a first angle θ and a second angle ω. The voice recognition device 8 is disposed on the handle 1, and is configured to receive a voice command of a user of the smart umbrella, convert the voice command into a control command, and send the control command to the controller 3. The controller 3 can also be arranged to control the adjustment device 5 in accordance with the control commands.

By displaying the first angle θ and the second angle ω, it can be determined by the parachute to adjust the umbrella surface 2 according to the calculation result of the smart umbrella, or to ignore the calculation result of the smart umbrella, and according to the judgment of the parachute Decide whether to adjust the umbrella surface 2 and how to adjust the umbrella surface 2. This is more user-friendly and enhances the user experience.

Embodiments of the present disclosure also provide a method of automatically blocking rain by a smart umbrella. 1a, 2 and 4, the smart umbrella comprises a handle 1, a canopy 2, a controller 3, a first detecting device 4, an adjusting device 5 and at least two second detecting devices 6, and The method includes the following steps S41-S46 and step S47'.

At step S41, the wind speed v _w in the first detection means 4 detects the wind direction and wind.

Specifically, the first detecting device 4 can detect the wind direction and the wind speed v _{w of} the wind downward, and transmit the detected wind direction and the wind speed v _{w of} the wind downward to the controller 3 .

At step S42, the second detecting means 6 detects the pressure of the raindrop on the canopy.

Specifically, each of the second detecting devices 6 disposed on the canopy 2 can respectively detect the pressure of the raindrops on the canopy surface, and respectively send the detected pressure values to the controller 3.

At step S43, the controller 3 determines the pressure value P detected by the second detecting means facing the wind direction.

Specifically, the controller 3 determines the second detecting device 6 corresponding to the wind direction based on the wind direction detected by the first detecting device 4, and determines the pressure value P detected by the second detecting device 6.

At step S44, the controller 3 is based on the wind speed v _{w of} the wind downward, the pressure value P detected by the second detecting means 6 facing the wind direction, and the correspondence between the preset pressure and the falling speed of the raindrop. To determine the raindrop descent speed v _r .

Specifically, the controller 3 can determine the raindrop falling speed according to the following steps S441-S443.

In step S441, the calculated pressure value _{_{^{Pw, P w = θ.5ρv w 2}}} , where ρ is the air density.

At step S442, the pressure difference value ΔP, ΔP = P - Pw is calculated.

In step S443, the correspondence between the preset pressure ΔP and the lowering speed determined with raindrops raindrop lowering speed v _r.

Specifically, the controller 3 queries the correspondence between the preset pressure and the raindrop falling speed according to ΔP to determine a corresponding raindrop falling speed v _r .

At step S45, the controller 3 determines the first angle θ based on the wind speed v _w and the raindrop descending speed v _r .

Specifically, the controller 3 may first calculate the adjustment angle reference value θ ₀ ,

The first angle θ is then determined within the range of [θ ₀ - Δθ, θ ₀ + Δθ], where Δθ is a preset value. In one embodiment, Δθ may be 5°-20°.

The step of determining the first angle θ according to the wind speed v _w and the raindrop falling speed v _r (step S45) may include the following steps S451-S453.

At step S451, m sample values (θ ₁ , θ ₂ , ..., θ _m ) are determined within the range of [θ ₀ - Δθ, θ ₀ + Δθ], and m ≥ 2.

At step 452, the angle between the central axis of the canopy and the handle is adjusted to the m sample values (θ ₁ , θ ₂ , ..., θ _m ), respectively, and the The pressure values (P ₁ , P ₂ , . . . , detected by the second detecting means corresponding to the wind direction corresponding to the m sample values (θ ₁ , θ ₂ , ..., θ _m ) ., P _m ).

Specifically, the controller 3 can control the adjusting device 5 to adjust the angle between the central axis of the canopy 2 and the handle 1 to θ ₁ , and then record the angle between the central axis of the canopy 2 and the handle 1 . the detected pressure value θ ₁ is in a state of facing the direction of the second detecting means 6 P _1. By analogy, P ₂ , ..., P _m are recorded separately.

In step S453, it is determined _{_{(P 1, P 2, ......}} , P m) of maximum value P _max and P _max corresponding to the sample value as the first angle θ.

At step S46, the adjusting device 5 adjusts the angle between the central axis of the canopy and the handle to a first angle θ.

Specifically, the controller 3 can control the adjustment device 5 to adjust the angle between the central axis of the canopy 2 and the handle 1 to a first angle θ.

Through steps S41-46, the first detecting device 4 can be used to detect the wind direction and the wind speed v _{w of the} current wind; the second detecting device 6 disposed on the canopy 2 is used to detect the pressure of the raindrop on the canopy; The device 3 determines the pressure value P detected by the second detecting device 6 facing the wind direction, and determines the raindrop falling speed v _r according to the correspondence between v _w , P and the preset pressure and the falling speed of the raindrop, and The first angle θ is determined according to v _w and v _r ; and the canopy 2 is moved by controlling the adjustment device 5 such that the central axis of the canopy 2 is at an angle θ with the handle 1 . Therefore, the smart umbrella of the present disclosure can automatically adjust the state of the canopy 2 according to the current wind direction, wind speed, and rainfall size, so that the canopy 2 can be aligned with the direction in which the raindrop falls, thereby achieving a better rainproof effect; The umbrella holder can control the umbrella in time and accurately without having to adjust the state of the umbrella to effectively block the wind and rain. Especially in the case that the wind direction changes rapidly and the wind speed is large, the smart umbrella can effectively solve the problem that the umbrella person cannot adjust the rainwater caused by the rain umbrella in time.

Since the wind direction, wind speed, and rain potential are constantly changing, after step 46, the method may further include the following steps S47-S48 (not shown).

At step S47, the controller 3 acquires the pressure value P' detected by the second detecting means facing the wind direction, and calculates the difference between P' and _Pmax .

At step S48, the controller 3 compares the difference between P' and _Pmax with a preset threshold, and if the difference between P' and _Pmax is greater than a preset threshold, the first angle θ is re-determined.

Specifically, if the pressure value P _{max of the} current raindrop to the pressure surface P' of the canopy 2 and the umbrella surface 2 is at a first angle θ, the difference between the pressure value P _{max of the} umbrella surface 2 is large, indicating that the state of the umbrella surface 2 is not the best for rain prevention. State, so the first angle θ needs to be re-determined and adjusted again.

It should be noted that, in the initialization stage of the smart umbrella, the method may further include the following steps: when the smart umbrella is opened, the controller 3 adjusts the horizontal rotation of the umbrella surface 2 around the connection point of the umbrella surface 2 and the handle 1 The angle is such that the initial direction of the wind vane 41 is the same as the wind direction reference direction.

In one embodiment, after adjusting the angle between the central axis of the canopy and the handle to a first angle θ (i.e., step 46), the method may further include the step S47'.

At step S47', the first detecting means 4 detects the second angle ω of the wind vane rotation, and the controller 3 controls the canopy horizontally to rotate the second angle ω according to the second angle ω so that the wind direction indicator 41 and the wind direction reference direction the same.

Specifically, the first detecting device 4 detects the second angle ω of the rotation of the wind direction indicator 41, and transmits the detected second angle ω to the controller 3. The controller 3 controls the adjusting device 5 such that the canopy 2 is horizontally rotated by the second angle ω such that the wind vane 41 is in the same direction as the wind direction reference, so that the canopy 2 coincides with the wind direction.

It should be noted that step S47' may also be performed after step S42 and before step S43, and the execution sequence between step S47' and step S47 and step S48 is not limited herein, that is, step S47' and step S47, step S48 can be executed at the same time.

In one embodiment, the smart umbrella further includes a display device 7 and a voice recognition device 8, and after step S45, step S46 may not be performed, but the following steps are performed: the display device 7 displays the first angle θ or displays a first angle θ and a second angle ω; the voice recognition device 8 receives the voice command of the parachute, and converts the voice command into a control command; the controller 3 uses the central axis of the canopy 2 and the umbrella according to the control command The angle between the shanks 1 is adjusted to a first angle θ, or the angle between the central axis of the canopy 2 and the stalk 1 is adjusted to a first angle θ and the second surface ω of the canopy 2 is controlled to rotate horizontally.

Specifically, as shown in FIG. 1, the display device 7 on the handle 1 can display the first angle θ and the second angle ω calculated by the controller 3. If the parachute is willing to adjust the canopy 2 according to the adjustment angle provided by the smart umbrella, the parachute can read the first angle θ and the second angle ω (ie, voice command) by voice, such that the voice recognition device 8 The voice command can be recognized and converted into a control command, and the controller 3 can control the adjustment device 5 to adjust the state of the canopy 2 according to the control command.

It is to be understood that the above embodiments are merely exemplary embodiments employed to explain the principles of the present disclosure, but the present disclosure is not limited thereto. Various modifications and improvements can be made by those skilled in the art without departing from the spirit and scope of the disclosure, and such modifications and improvements are also considered to be within the scope of the disclosure.

Claims

A smart umbrella comprising: a handle, a canopy, a controller, a first detecting device, an adjusting device and at least two second detecting devices, wherein

The first detecting device is located above the umbrella surface and is configured to detect a wind direction and a wind speed v w of the wind downward, and send the wind direction and the wind speed v w to the controller;

The second detecting device is disposed on the umbrella surface, and is configured to detect the pressure of the raindrop on the umbrella surface, and send the detected pressure value to the controller;

The controller is configured to determine a pressure value P detected by the second detecting device facing the wind direction; a pressure value detected according to the wind speed v w of the wind and the second detecting device facing the wind direction P, and a corresponding relationship between the preset pressure and the raindrop falling speed to determine the raindrop falling speed v r , and determining the first angle θ according to the wind speed v w , the raindrop falling speed v r ; and controlling the adjusting device Tilting the umbrella face against the wind direction, the angle between the central axis of the canopy and the handle is adjusted to a first angle θ;

The adjustment device is disposed at a junction of the handle and the canopy and is configured to adjust an angle between a central axis of the canopy and the handle under the control of the controller.
The smart umbrella according to claim 1, wherein said second detecting means is uniformly distributed in a ring shape on said umbrella surface.
The smart umbrella according to claim 1, wherein said first angle θ is 0-90°.
The smart umbrella according to claim 1, wherein the first detecting device is provided with a wind vane, and the direction of the wind vane changes as the wind direction changes;

The adjusting device is further configured to: adjust an angle at which the canopy is horizontally rotated around a connection point of the canopy and the handle;

The controller is further configured to: when the smart umbrella is turned on, control the adjusting device to adjust the horizontal rotation of the canopy so that the initial direction of the wind vane is the same as the wind direction reference direction.
The smart umbrella according to claim 4, wherein said first detecting means is further configured to: detect a second angle ω of said wind vane rotation, and transmit said second angle ω to said controller, said The second angle ω is an angle between the wind direction and the wind direction reference direction;

The controller is further configured to: after controlling the adjustment device to adjust an angle between a central axis of the canopy and the handle to a first angle θ, or to determine a second against the wind direction Before the pressure value P detected by the detecting device, the adjusting device adjusts the canopy to horizontally rotate the second angle ω according to the second angle ω, so that the wind direction is the same as the wind direction reference direction.
The smart umbrella according to claim 1, wherein said first detecting means is disposed at a non-grip end of said handle, and said controller is disposed inside said handle.
The smart umbrella according to claim 5, wherein said adjusting means comprises: a first motor and a universal joint, wherein said universal joint is coupled to said canopy, said first motor being disposed at said umbrella The inside of the handle is connected to the universal joint and is arranged to drive the universal joint to rotate to adjust the first angle θ.
The smart umbrella according to claim 7, wherein said adjusting device further comprises a second motor and a link, wherein said link is disposed inside said handle and connected to said universal joint, said A second motor is disposed inside the handle and connected to the link, and is configured to drive the link to rotate to adjust the second angle ω.
A smart umbrella according to claim 5, further comprising a display device and a voice recognition device, wherein said display device is disposed on said handle and is arranged to display said first angle θ or display said first angle θ and the second angle ω, the voice recognition device is disposed on the handle and configured to receive a voice command of an umbrella holder, convert the voice command into a control command, and send the control command Giving the controller

The controller is further configured to control the adjustment device in accordance with the control command.
A method for automatically preventing rain by a smart umbrella, the smart umbrella comprising a handle, a canopy, a controller, a first detecting device, an adjusting device and at least two second detecting devices, the method comprising the steps of:

The first detecting device detects a wind direction and a wind speed v w of the wind downward;

The second detecting device detects the pressure of the raindrop on the canopy surface;

The controller determines a pressure value P detected by the second detecting device facing the wind direction; a pressure value P detected according to the wind downward velocity v w , the second detecting device facing the wind direction, and Determining a relationship between a preset pressure and a raindrop falling speed to determine a raindrop falling speed v r , and determining a first angle θ according to the wind speed v w and the raindrop falling speed v r ;

The adjusting device tilts the umbrella face against the wind direction, and the angle between the central axis of the canopy and the handle is adjusted to a first angle θ.
The method of claim 10 wherein the step of the controller determining the first angle θ comprises the steps of:

Calculate the wind pressure value Pw, P w =0.5ρv w 2 , where ρ is the air density;

Calculate the pressure difference ΔP, ΔP = P-Pw;

Determining the raindrop falling velocity v r according to the correspondence between the ΔP and the preset pressure and the falling speed of the raindrop;

Calculate the adjustment angle reference value θ 0 ,
And determining a first angle θ within a range of [θ 0 - Δθ, θ 0 + Δθ], where Δθ is a preset value.
The method of claim 11, wherein the step of determining the first angle θ within the range of [θ 0 - Δθ, θ 0 + Δθ] comprises the following steps:

m sampling values (θ 1 , θ 2 , ..., θ m ) are determined within the range of [θ 0 - Δθ, θ 0 + Δθ], m ≥ 2;

Adjusting an angle between a central axis of the canopy and the handle to the m sampling values (θ 1 , θ 2 , ..., θ m ), respectively, and recording the m The pressure values (P 1 , P 2 , ... detected by the second detecting means corresponding to the wind direction corresponding to the sample values (θ 1 , θ 2 , ..., θ m ) , P m );

The maximum value P max in (P 1 , P 2 , ..., P m ) is determined, and the sample value corresponding to P max is taken as the first angle θ.
The method according to claim 12, wherein after said step of adjusting an angle between a central axis of said canopy and said handle is a first angle θ, said method further comprising the steps of:

The controller acquires a pressure value P′ detected by the second detecting device facing the wind direction, and calculates a difference between P′ and P max ;

The controller compares the difference between P′ and P max with a preset threshold, and if the difference between P′ and P max is greater than a preset threshold, the first angle θ is re-determined.
The method according to any one of claims 10 to 13, wherein the first detecting device is provided with a wind vane, and the direction of the wind vane changes as the wind direction changes, and the method further comprises the following steps:

When the smart umbrella is opened, the controller adjusts an angle at which the umbrella surface is horizontally rotated around a connection point of the canopy and the handle, such that an initial direction of the wind vane is the same as a wind direction reference direction.
The method according to claim 14, further comprising the step of: said first detecting means detecting a second angle ω of said wind vane rotation, said second angle ω being between said wind direction and said wind direction reference direction Angle

After the step of adjusting the angle between the central axis of the canopy and the handle is a first angle θ, or the pressure value P detected by the second detecting device that determines the wind direction Before the step, the method further comprises the following steps:

The controller controls the umbrella surface to horizontally rotate the second angle ω according to the second angle ω such that the wind vane is the same as the wind direction reference direction.
The method of claim 15 wherein said smart umbrella further comprises a display device and a voice recognition device, said method further comprising the steps of:

The display device displays the first angle θ or displays the first angle θ and the second angle ω;

The voice recognition device receives a voice command of an umbrella holder, and converts the voice command into a control command;

The controller adjusts an angle between the central axis of the canopy and the handle according to the control instruction to a first angle θ or adjusts an angle between the central axis of the canopy and the handle to the first An angle θ and controlling the canopy to horizontally rotate the second angle ω.