阅读说明：本技术 一种消音防碎裂光伏集成模块及应用其的自动伸缩挡雨棚 (Sound-attenuation anti-fragmentation photovoltaic integrated module and automatic telescopic rain shed applying same ) 是由 吴继锋 王永根 谢国栋 谢晓璐 楼枫 郭梁 杨青 周海明 陆雨洁 于 2021-06-08 设计创作，主要内容包括：本发明提出一种消音防碎裂光伏集成模块,包括防碎裂光伏板和消音板,所述防碎裂光伏板和消音板之间设有夹空层,所述防碎裂光伏板包括依次层压的透明聚碳酸酯半硬软片、光热吸收硅电极板和光伏板绝缘隔热基层。本发明将现有光伏面板的玻璃板换成透明聚碳酸酯半硬软片,使得本模块表面具有防碎的作用。(The invention provides a noise-reduction and fragmentation-prevention photovoltaic integrated module which comprises a fragmentation-prevention photovoltaic plate and a sound-absorption plate, wherein a sandwich layer is arranged between the fragmentation-prevention photovoltaic plate and the sound-absorption plate, and the fragmentation-prevention photovoltaic plate comprises a transparent polycarbonate semi-hard film, a photo-thermal absorption silicon electrode plate and a photovoltaic plate insulating and heat-insulating base layer which are sequentially laminated. The invention changes the glass plate of the prior photovoltaic panel into the transparent polycarbonate semi-hard soft sheet, so that the surface of the module has the function of breakage prevention.)

1. The utility model provides a amortization fragmentation prevention photovoltaic collection moulding piece, characterized by includes fragmentation prevention photovoltaic board and acoustical panel, be equipped with between fragmentation prevention photovoltaic board and the acoustical panel and press from both sides hollow layer (6), fragmentation prevention photovoltaic board is including transparent polycarbonate semi-hard film (1), light and heat absorption silicon electrode board (2) and the insulating thermal-insulated basic unit of photovoltaic board that laminate in proper order.

2. An acoustic abatement shatter-resistant photovoltaic integrated module according to claim 1, wherein the photovoltaic panel insulating and insulating substrate comprises a first UPVC panel (3), an aluminosilicate ceramic insulating paper (4) and a second UPVC panel (5) laminated in sequence.

3. An acoustic damping and shatter-resistant photovoltaic integrated module according to claim 1, wherein the acoustic damping panel comprises a first acoustic damping panel (7) and a second acoustic damping panel (9), and a layer of acoustic damping material (8) is filled between the first acoustic damping panel (7) and the second acoustic damping panel (9).

4. An automatic telescopic rain shed, which adopts the noise-reduction and anti-fragmentation photovoltaic integrated module as claimed in any one of claims 1 to 3, is characterized by comprising a base plate (12), wherein first brackets (13) are fixed on two sides of the base plate (12), a photovoltaic shed (11) is fixed above the first support (13), a clothes-horse (14) is sleeved below the first support (13) in a penetrating way, the photovoltaic shed (11) is a silencing and anti-fragmentation photovoltaic integrated module, the photothermal absorption silicon electrode plate (2) of the silencing and anti-fragmentation photovoltaic integrated module is connected with a storage battery, one end of the clothes-horse (14) is connected with a motor, the two ends of the clothes-horse (14) are fixed with a second bracket (15), a rain shelter (16) is fixed on the second support (15), the storage battery is connected with a controller, and the controller controls the motor to stop or rotate positively and negatively.

5. An automatic telescopic rain shed as claimed in claim 4, wherein a first terminal (10) is fixed to the end of the photovoltaic shed (11) away from the base plate (12), a first projection is arranged below the first terminal (10), a second terminal (18) is fixed to the end of the rain shed (16) close to the base plate (12), and a second projection is arranged above the second terminal (18).

6. An automatic telescopic rain shed as claimed in claim 4, wherein an LED lamp (17) is arranged at one end of the rain shed (16) far away from the base plate (12), the LED lamp (17) is electrically connected with a controller, and the controller is electrically connected with a photosensitive switch.

7. An automatic retractable rain shelter as claimed in claim 4 in which the controller is electrically connected to a signal receiver for receiving signals from a user device.

8. The automatic telescopic rain shelter of claim 4, wherein the controller is electrically connected with a rainfall judging device, the rainfall judging device comprises a water collecting tank (19) hinged to the upper surface of the photovoltaic shelter (11), one end of a spring (20) is connected to the bottom of the water collecting tank (19), a pressing plate (21) is connected to the other end of the spring (20), a first test substrate (23) is arranged on the upper surface of the photovoltaic shelter (11) corresponding to the pressing plate (21), a first test groove is arranged in the first test substrate (23), a first pressure strain gauge (22) is arranged at the bottom of the first test groove, the pressing plate (21) is slidably connected in the first test groove, the first pressure strain gauge (22) is electrically connected with the controller, and a reset bracket (24) is fixedly connected to one end, close to the substrate (12), of the rain shelter (16), the terminal crashproof wheel (25) that is equipped with of support (24) resets, crashproof wheel (25) are used for contacting with the terminal surface that water catch bowl (19) are close to base plate (12).

9. The automatic telescopic rain shed according to claim 4, wherein the controller is electrically connected with a rain stopping judgment device (26), the rain stopping judgment device (26) is arranged on the upper surface of the photovoltaic shed (11) and comprises an upper part and a second test substrate (31) fixed on the upper surface of the photovoltaic shed (11), the upper part comprises a temporary water storage tank (27), the bottom of the temporary water storage tank (27) is an inclined surface, a plurality of small holes (28) are communicated with the lowest part of the bottom of the temporary water storage tank (27), a pressing block (29) is arranged below the upper part, a second test slot is arranged in the second test substrate (31), a second pressure strain gauge (30) is arranged at the bottom of the second test slot, the second pressure strain gauge (30) is electrically connected with the controller, the pressing block (29) is slidably connected in the second test slot, and a limiting groove (33) is arranged at the upper part, the second test substrate (31) is provided with a limiting block (32), and the limiting block (32) is clamped in a limiting groove (33).

Technical Field

The invention relates to the technical field of photovoltaic panels, in particular to a noise-reducing and anti-fragmentation photovoltaic integrated module and an automatic telescopic rain shelter applying the same.

Background

Most of the silicon material photovoltaic panels on the market today are single-sided light-receiving and power-generating rigid photovoltaic panels with a tempered glass material as a panel, a TFT material as a back panel and EVA as an adhesive material. Referring to a photovoltaic panel assembly with the Chinese patent publication No. CN210985988U, the photovoltaic panel assembly comprises a toughened glass shell, a solar panel is obliquely arranged in the toughened glass shell, a frame body matched with the outer side face of the toughened glass shell is sleeved on the outer side of the toughened glass shell, and a toughened glass cover is arranged on the top face of the toughened glass shell; a storage battery is arranged on the bottom surface of the toughened glass shell below the solar cell panel; the bottom of the toughened glass shell is provided with a threading hole, and the toughened glass shell has the defects of heavy weight, high installation cost, easy fragmentation and poor safety. If the high-altitude object throwing condition occurs, the toughened glass is easily smashed, and meanwhile, the glass pieces can also fall off, so that great potential safety hazards exist. The existing rain shelters are generally fixed and cannot stretch out and draw back, and can block sunlight in bright sunshine, so that the airing effect is poor.

Disclosure of Invention

The invention solves the problem that the existing photovoltaic panel is easy to crack, and provides a noise-reduction and crack-prevention photovoltaic integrated module, which changes the glass plate of the existing photovoltaic panel into a transparent polycarbonate semi-hard soft sheet, so that the surface of the module has a crack-prevention effect.

The invention also solves the problem of poor airing effect of the existing rain shed, and provides the automatic telescopic rain shed which is controlled to be telescopic by utilizing solar energy, low in power consumption and good in airing effect.

In order to realize the purpose, the following technical scheme is provided:

the utility model provides a amortization fragmentation prevention photovoltaic integrated module, includes fragmentation prevention photovoltaic board and acoustical panel, be equipped with the die sinking layer between fragmentation prevention photovoltaic board and the acoustical panel, fragmentation prevention photovoltaic board is including the transparent polycarbonate semi-hard film, the light and heat absorption silicon electrode board and the photovoltaic board insulation heat-insulating base layer of laminating in proper order.

According to the photovoltaic module, the glass plate of the existing photovoltaic panel is replaced by the transparent polycarbonate semi-hard soft sheet, and the transparent polycarbonate semi-hard soft sheet has good breakage resistance and tensile resistance, so that the surface of the photovoltaic module has a breakage-proof effect, the photo-thermal absorption silicon electrode plate in the photovoltaic module is protected, potential safety hazards caused by breakage of the glass plate due to high-altitude parabolic motion are avoided, and the service life of the photovoltaic module is prolonged. In addition, the module is also provided with a sound-absorbing plate, so that the noise generated when rainwater drops on the module is effectively reduced.

Preferably, the photovoltaic panel insulation and heat insulation base layer comprises a first UPVC (unplasticized polyvinyl chloride) panel, aluminum silicate ceramic insulation paper and a second UPVC panel which are laminated in sequence.

The double-layer UPVC board sandwiched with heat insulating paper is designed as the base layer board, so that the structural strength of the module is improved, the heat insulating effect is achieved, the heat aging of other parts of the module is reduced, and the service life is prolonged.

Preferably, the sound-absorbing plate comprises a first sound-absorbing panel and a second sound-absorbing panel, and a sound-absorbing material layer is filled between the first sound-absorbing panel and the second sound-absorbing panel.

The first silencing panel and the second silencing panel are made of metal or PVC (polyvinyl chloride) other plastic materials, and the sound absorbing material layer is made of honeycomb sound absorbing cotton or other organic honeycomb sound absorbing materials.

The utility model provides an automatic flexible weather enclosure adopts foretell cracked photovoltaic integrated module of amortization, includes the base plate, the base plate both sides are fixed with first support, first support top is fixed with the photovoltaic canopy, first support below is run through the cover and is had the clothes-horse, the photovoltaic canopy is the amortization and prevents cracked photovoltaic integrated module, the light and heat absorption silicon electrode plate of the cracked photovoltaic integrated module of amortization is connected with the battery, the one end of clothes-horse is connected with the motor, the clothes-horse both ends are fixed with the second support, be fixed with the weather enclosure on the second support, the battery is connected with the controller, controller control motor is stopping or just reversing motion.

The motor rotates to drive the clothes airing rod to rotate, so that the second support is driven to rotate, the second support drives the rain shelter to extend out, and clothes aired on the clothes airing rod are prevented from being drenched by rainwater.

Preferably, a first terminal is fixed at one end, far away from the substrate, of the photovoltaic shed, a first convex block is arranged below the first terminal, a second terminal is fixed at one end, close to the substrate, of the rain shelter, and a second convex block is arranged above the second terminal.

When the rain shelter is rotated and extended, the second convex block rotates along with the rotation of the clothes airing rod, when the second convex block rotates to touch the first convex block, the rain shelter is extended in place, the controller controls the motor to stop rotating, and the rain shelter is prevented from being excessively extended.

Preferably, one end, far away from the base plate, of the rain shelter is provided with an LED lamp, the LED lamp is electrically connected with a controller, and the controller is electrically connected with a photosensitive switch.

Preferably, the controller is electrically connected with a signal receiver, and the signal receiver is used for receiving signals sent by user equipment.

The user equipment is intelligent equipment and comprises an intelligent watch, a mobile phone and a computer, the user sends a signal for opening or closing the rain shelter and a switch signal of the LED lamp by using the intelligent equipment, the signal receiver receives the signal and then sends the signal to the controller for processing, and the controller controls the opening or closing of the rain shelter and the switch of the LED lamp.

Preferably, the controller electricity is connected with rainfall judgment device, rainfall judgment device includes with photovoltaic canopy upper surface articulated water catch bowl, the water catch bowl bottom is connected with the one end of spring, and the other end of spring is connected with the clamp plate, the position that photovoltaic canopy upper surface corresponds the clamp plate is equipped with first test substrate, be equipped with first test groove in the first test substrate, the bottom of first test groove is equipped with first pressure strain gauge, clamp plate sliding connection is in first test groove, first pressure strain gauge is connected with the controller electricity, the one end fixedly connected with reset bracket that the canopy is close to the base plate, reset bracket end is equipped with the anticollision wheel, the anticollision wheel is used for being close to the end face contact of base plate with the water catch bowl.

Preferably, the controller electricity is connected with stops rain and judges the device, it judges the device setting at the upper surface of photovoltaic canopy to stop rain, including upper portion and the second test substrate who fixes the upper surface at the photovoltaic canopy, upper portion includes interim aqua storage tank, the bottom of interim aqua storage tank is the inclined plane, interim aqua storage tank bottom extreme lower position intercommunication has a plurality of apertures, the below on upper portion is equipped with the briquetting, be equipped with the second test groove in the second test substrate, second test tank bottom is equipped with second pressure strain gauge, second pressure strain gauge is connected with the controller electricity, briquetting sliding connection is in the second test groove, upper portion is equipped with the spacing groove, the second test substrate is equipped with the stopper, the stopper card is put in the spacing groove.

The invention has the beneficial effects that: according to the photovoltaic module, the glass plate of the existing photovoltaic panel is replaced by the transparent polycarbonate semi-hard soft sheet, and the transparent polycarbonate semi-hard soft sheet has good breakage resistance and tensile resistance, so that the surface of the photovoltaic module has a breakage-proof effect, the photo-thermal absorption silicon electrode plate in the photovoltaic module is protected, potential safety hazards caused by breakage of the glass plate due to high-altitude parabolic motion are avoided, and the service life of the photovoltaic module is prolonged. In addition, the module is also provided with a sound-absorbing plate, so that the noise generated when rainwater drops on the module is effectively reduced. The motor rotates to drive the clothes airing rod to rotate, so that the second support is driven to rotate, the second support drives the rain shelter to extend out, and clothes aired on the clothes airing rod are prevented from being drenched by rainwater.

Drawings

Fig. 1 is a partial cross-sectional view of a sound attenuating shatter-resistant photovoltaic integrated module of example 1;

FIG. 2 is a schematic view showing the structure of the automatically retractable rain shed according to embodiment 1;

FIG. 3 is a schematic view showing the structure of a rainfall judging device according to embodiment 3;

FIG. 4 is a schematic view showing a state of pouring water in the rainfall judging device according to the embodiment 3;

FIG. 5 is a sectional view showing the structure of a rain stop judging device according to embodiment 4;

wherein: 1. the device comprises a transparent polycarbonate semi-hard soft sheet 2, a photothermal absorption silicon electrode plate 3, a first UPVC plate 4, aluminum silicate ceramic thermal insulation paper 5, a second UPVC plate 6, a hollow layer 7, a first silencing panel 8, a sound absorption material layer 9, a second silencing panel 10, a first terminal 11, a photovoltaic shed 12, a substrate 13, a first support 14, a clothes airing rod 15, a second support 16, a rain shelter 17, an LED lamp 18, a second terminal 19, a water collecting tank 20, a water collecting tank 21, a pressing plate 22, a first pressure strain sheet 23, a first test substrate 24, a reset support 25, an anti-collision wheel 26, a rain stopping judgment device 27, a temporary water storage tank 28, a small hole 29, a pressing block 30, a second pressure strain sheet 31, a second test substrate 32, a limiting block 33 and a limiting groove.

Detailed Description

Example 1:

the embodiment provides a amortization fragmentation prevention photovoltaic integrated module, refer to fig. 1, including fragmentation prevention photovoltaic board and acoustical panel, be equipped with between fragmentation prevention photovoltaic board and the acoustical panel and press from both sides empty layer 6, fragmentation prevention photovoltaic board is including transparent polycarbonate semi-hard film 1, light and heat absorption silicon electrode board 2 and the photovoltaic panel insulation heat-insulating base layer of laminating in proper order. The photovoltaic panel insulation base layer comprises a first UPVC (unplasticized polyvinyl chloride) plate 3, aluminum silicate ceramic insulation paper 4 and a second UPVC plate 5 which are laminated in sequence. The sound-deadening plate comprises a first sound-deadening panel 7 and a second sound-deadening panel 9, and a sound-deadening material layer 8 is filled between the first sound-deadening panel 7 and the second sound-deadening panel 9.

According to the photovoltaic module, the glass plate of the existing photovoltaic panel is replaced by the transparent polycarbonate semi-hard soft sheet 1, and the transparent polycarbonate semi-hard soft sheet 1 has good breakage-proof flexibility, so that the surface of the photovoltaic module has a breakage-proof effect, the photo-thermal absorption silicon electrode plate 2 in the photovoltaic module is protected, potential safety hazards caused by breakage of the glass plate due to high-altitude parabolic motion are avoided, and the service life of the photovoltaic module is prolonged. In addition, the module is also provided with a sound-absorbing plate, so that the noise generated when rainwater drops on the module is effectively reduced.

In order to improve the surface abrasion resistance, the transparent polycarbonate semi-hard sheet 1 of the present example contains a plastic abrasion resistant additive in an amount of 0.015 to 0.05% based on the total composition, and the plastic abrasion resistant additive includes a single additive or a mixture of additives to improve the abrasion resistance of the material. The processing method refers to the abrasion-resistant composite plastic, and various abrasion-resistant additives such as graphene, molybdenum disulfide and fibers are added into the thermoplastic plastic for composite modification, so that the abrasion-resistant characteristic of the thermoplastic plastic is improved. The abrasion-resistant composite plastic has the advantages of improved abrasion resistance, acid and alkali resistance and the like, and can be processed by common injection molding or extrusion molding materials.

The plastic wear-resistant additive of the embodiment selects one or a mixture of glass fiber, graphene and molybdenum disulfide, and the glass fiber can provide a firm mechanical bonding function among macromolecules, so that the structural integrity of the thermoplastic plastic can be improved, and the wear resistance can be improved. The reinforcement of the glass fiber can increase the latent heat conductivity and the heat deformation resistance of the plastic, so that the load resistance and the friction resistance of the plastic can be obviously improved. The chemical structure of the graphene is a unique lattice-shaped structure, graphite molecules can easily slide mutually under small friction force, and the wear-resisting property is particularly important in the water environment and can improve the heat-conducting property. Molybdenum disulfide (Moly); molybdenum disulfide is an abrasion resistance additive used primarily in polycarbonate plastics and acts as a crystallizing agent to increase the crystallinity of the PC, resulting in a polycarbonate PC material with a harder and more abrasion resistant surface.

The double-layer UPVC board sandwiched with heat insulating paper is designed as the base layer board, so that the structural strength of the module is improved, the heat insulating effect is achieved, the heat aging of other parts of the module is reduced, and the service life is prolonged.

The first silencing panel 7 and the second silencing panel 9 are made of metal or PVC or other plastic materials, and the sound-absorbing material layer 8 is made of honeycomb sound-absorbing cotton or other organic honeycomb sound-absorbing materials.

This embodiment still provides an automatic flexible weather shield, refer to fig. 2, adopt foretell cracked photovoltaic integrated module of amortization, including base plate 12, base plate 12 both sides are fixed with first support 13, first support 13 top is fixed with photovoltaic canopy 11, first support 13 below is run through the cover and is had clothes-horse 14, photovoltaic canopy 11 is the cracked photovoltaic integrated module of amortization, the light and heat absorption silicon electrode plate 2 of the cracked photovoltaic integrated module of amortization is connected with the battery, the one end of clothes-horse 14 is connected with the motor, the clothes-horse 14 both ends are fixed with second support 15, be fixed with weather shield 16 on the second support 15, the battery is connected with the controller, controller control motor is stopping or just reversing motion. A first terminal 10 is fixed at one end of the photovoltaic shed 11 far away from the substrate 12, a first bump is arranged below the first terminal 10, a second terminal 18 is fixed at one end of the rain shelter 16 close to the substrate 12, and a second bump is arranged above the second terminal 18. The one end that keeps away from base plate 12 of canopy 16 is equipped with LED lamp 17, and LED lamp 17 is connected with the controller electricity, and the controller electricity is connected with photosensitive switch. Photosensitive switch detects the luminance of current environment, reduces to the certain degree when luminance, and photosensitive switch is closed, sends light turn-on signal to controller, and controller control LED lamp 17 lights, and convenience of customers carries out the sunning or collects the clothing at night.

The working process of the automatic telescopic rain shed is as follows:

the motor rotates to drive the clothes-horse 14 to rotate, so as to drive the second support 15 to rotate, and the second support 15 drives the rain shelter 16 to extend out, so that clothes hung on the clothes-horse 14 are prevented from being drenched by rainwater.

When the rain shelter 16 extends in a rotating mode, the second lug rotates along with the rotation of the clothes pole 14, when the second lug rotates to touch the first lug, the rain shelter 16 extends in place, the controller controls the motor to stop rotating, and the rain shelter 16 is prevented from extending excessively.

Example 2:

in this embodiment, a signal receiver is added on the basis of embodiment 1, the controller is electrically connected with the signal receiver, and the signal receiver receives a signal sent by user equipment.

The user equipment is intelligent equipment and comprises an intelligent watch, a mobile phone and a computer, the user sends a signal for opening or closing the rain shelter 16 and an on-off signal of the LED lamp by using the intelligent equipment, the signal receiver receives the signal and then sends the signal to the controller for processing, and the controller controls the opening or closing of the rain shelter 16 and the on-off of the LED lamp, so that remote intelligent operation is realized.

Example 3:

the embodiment has increased the rainfall and has judged the function on the basis of embodiment 1, realizes that automatic flexible canopy detects the rainfall by oneself, stretches out the canopy by oneself.

Referring to fig. 3, the controller is electrically connected with a rainfall judging device, the rainfall judging device includes a water collecting tank 19 hinged to the upper surface of the photovoltaic shed 11, the bottom of the water collecting tank 19 is connected with one end of a spring 20, the other end of the spring 20 is connected with a pressing plate 21, a first test substrate 23 is arranged at a position, corresponding to the pressing plate 21, of the upper surface of the photovoltaic shed 11, a first test slot is arranged in the first test substrate 23, a first pressure strain gauge 22 is arranged at the bottom of the first test slot, the pressing plate 21 is slidably connected in the first test slot, the first pressure strain gauge 22 is electrically connected with the controller, a reset bracket 24 is fixedly connected to one end, close to the substrate 12, of the rain shelter 16, an anti-collision wheel 25 is arranged at the tail end of the reset bracket 24, and the anti-collision wheel 25 is used for contacting with the end surface, close to the substrate 12, of the water collecting tank 19.

The cross section of the water collecting tank 19 is L-shaped, the volume of the water collecting tank is set according to the practical application scene, when raining, rainwater is collected in the water collecting tank 19, the water collecting tank 19 is under the action of the weight of the rainwater, the spring 20 is extruded, the spring 20 extrudes the pressing plate 21 to slide downwards in the first test groove, the first pressure strain gauge 22 is finally extruded, the controller receives the voltage of the first pressure strain gauge 22 in real time, if the voltage of the first pressure strain gauge 22 exceeds a set voltage threshold value and lasts for 3s, the current raining is judged, the controller controls the motor to rotate and drives the rain shelter 16 to extend out, when the rain shelter 16 extends in place, referring to the graph 4, the reset bracket 24 drives the anti-collision wheel 25 to move and extrude the end face of the water collecting tank 19, the water collecting tank 19 rotates around the upper surface of the photovoltaic cell 11, the water collected in the water collecting tank 19 is poured out, when the rain is stopped, the rain shelter 16 resets, the water collecting tank 19 resets under the action of the spring 20, and preparing for next rainwater detection.

Example 4:

this embodiment has increased on the basis of embodiment 1 and embodiment 3 and has stopped rain and judged the function, realizes automatic flexible canopy and detects by oneself and stop rain, withdraws the canopy by oneself.

Referring to fig. 5, the controller is electrically connected with a rain stopping judgment device 26, the rain stopping judgment device 26 is arranged on the upper surface of the photovoltaic shed 11, and includes an upper portion and a second test substrate 31 fixed on the upper surface of the photovoltaic shed 11, the upper portion includes a temporary water storage tank 27, the bottom of the temporary water storage tank 27 is an inclined surface, the lowest position of the bottom of the temporary water storage tank 27 is communicated with a plurality of small holes 28, a press block 29 is arranged below the upper portion, a second test slot is arranged in the second test substrate 31, a second pressure strain gauge 30 is arranged at the bottom of the second test slot, the second pressure strain gauge 30 is electrically connected with the controller, the press block 29 is slidably connected in the second test slot, a limit slot 33 is arranged on the upper portion, a limit block 32 is arranged on the second test substrate 31, and the limit block 32 is clamped in the limit slot 33.

The cross section area of the rainwater inlet of the temporary water storage tank 27 is larger than the sum of the cross section areas of the small holes 28, namely, the water inlet speed is higher than the water outlet speed, when rainwater enters the temporary water storage tank 27, the rainwater can flow out completely within a certain time, and the rainwater retention time can be controlled by adjusting the ratio of the cross section area of the rainwater inlet of the temporary water storage tank 27 to the cross section area of the small holes 28. When raining, the rainwater can get into interim aqua storage tank 27, the whole weight in upper portion can change this moment, the voltage that second compressive strain gage 30 detected also can change in real time, the controller receives the voltage change signal of second compressive strain gage 30, in a period of time, it does not exceed the voltage threshold to survey the voltage, then judge that the rainwater has flowed out from interim aqua storage tank 27, and no new rainwater flows in, judge promptly that it has stopped the rain, controller control motor rotates this moment, make weather enclosure 16 withdraw.