CN111441541A - Roof garden rainwater utilization system and method - Google Patents

Abstract

The invention belongs to the technical field of rainwater utilization, and discloses a roof garden rainwater utilization system and method. The roof garden rainwater utilization system includes: a rainwater image collection module, a germ collection module, a rainwater volume collection module, a main control module, and a rainwater image enhancement module. module, rainwater judgment module, filter module, sedimentation module, purification module, drip irrigation module, display module. In the present invention, a germ collection module is arranged to collect rainwater germ data, and the rainwater quantity collection module collects rainwater quantity data; the rainwater image enhancement module performs enhancement processing on the collected rainwater image, and the rainwater judgment module judges the clarity of the rainwater according to the rainwater image through a judgment program. The present invention detects the rainwater in real time, ensures the safety of garden water, and avoids rainwater from causing damage to garden plants and affecting the growth of plants. At the same time, the invention can precipitate rainwater, ensure the clarity of the water, and prevent the plants from being covered with dust.

Description

A roof garden rainwater utilization system and method

technical field

The invention belongs to the technical field of rainwater utilization, and in particular relates to a roof garden rainwater utilization system and method.

Background technique

Rainwater utilization is a comprehensive consideration of the requirements of rainwater runoff pollution control, urban flood control and ecological environment improvement. The establishment includes a roof rainwater collection and storage system, a rainwater interception and infiltration system, and an ecological community rainwater utilization system. Rainwater is used as a technical means for spraying road surfaces, irrigating green spaces, storing water for flushing toilets and other urban miscellaneous water; however, the existing roof garden rainwater utilization system cannot perform real-time detection of rainwater. Because rainwater contains sterilization, it is easy to harm human health or Garden plants make an impact. At the same time, the existing roof garden rainwater utilization system cannot deposit rainwater, which easily makes the plants covered with dust.

Through the above analysis, the existing problems and defects in the prior art are:

(1) The existing roof garden rainwater utilization system cannot perform real-time detection of rainwater. Since the rainwater contains sterilization, it is easy to affect human health or garden plants.

(2) The existing roof garden rainwater utilization system cannot deposit rainwater, which easily makes the plants covered with dust.

SUMMARY OF THE INVENTION

In view of the problems existing in the prior art, the present invention provides a roof garden rainwater utilization system and method.

The present invention is achieved in this way, a roof garden rainwater utilization method, the roof garden rainwater utilization method, comprising:

Step 1: Collect rainwater image data with a camera through the rainwater image collection module, collect rainwater germ data with a germ detector through the germ collection module, and collect rainwater quantity data with a rain gauge through the rainwater quantity collection module;

In step 2, according to the above-mentioned data collected, the main control module uses an image enhancement algorithm to enhance the collected rainwater image through the rainwater image enhancement module; the rainwater judging module uses a judgment program to judge the clarity of the rainwater according to the rainwater image;

Step 3, according to the judgment result, filter the rainwater impurities through the filter module using the filter screen, use the chemical agent to precipitate the rainwater turbidity through the precipitation module, and use the purifier to purify the rainwater through the purification module;

Step 4: After the processing is completed, drip irrigation is performed on the roof garden by using drip tubes through the drip irrigation module, and the collected rainwater images, germ data, rainwater volume data, and judgment results are displayed on the display module through the display;

The rain image enhancement module enhancement method is as follows:

(1) obtaining a plurality of original rainwater images collected by an image enhancement algorithm, and the plurality of original rainwater images respectively include target object regions;

(2) registering the plurality of original rain images according to the positions corresponding to the target object regions in the plurality of original rain images to obtain a plurality of registered rain images;

(3) obtaining an enhanced target object area according to the plurality of registered rain images;

(4) taking one rain image of the plurality of original rain images as the reference rain image, and determining the non-target object area of the reference rain image; The object area is synthesized to obtain an enhanced rain image.

Further, obtaining the enhanced target object area according to the plurality of registered rain images includes:

performing weighted average processing of pixel values on the plurality of registered rain images to obtain an initial composite rain image, where the initial composite rain image includes the enhanced target object area;

Synthesizing the enhanced target object area and the non-target object area of the reference rain image, and obtaining the enhanced rain image includes:

Synthesizing the initial synthesized rain image and the non-target object area of the reference rain image to obtain an enhanced image.

Further, synthesizing the initial synthesized rain image and the non-target object area of the reference rain image to obtain an enhanced rain image, including:

determining the target object area and the non-target object area of the initial synthetic rain image;

Obtain an enhanced rain image according to the target object area and the non-target object area of the initial synthetic rain image, and the non-target object area of the reference rain image;

Wherein, the target object area in the enhanced rain image is obtained according to the target object area of the initially synthesized rain image, and the non-target object area in the enhanced rain image includes the same as that in the enhanced rain image. The transition area between the target object areas, and the non-transition area except the transition area, the transition area is based on the non-target object area of the reference rain image and the non-target object area of the initial synthetic rain image Obtaining, the non-transition area is obtained according to the non-target object area of the reference rain image.

Further, the determining of the target object area and the non-target object area of the initial synthetic rain image includes:

A rain image segmentation map is generated according to the initial synthetic rain image; wherein, the pixel value corresponding to the target object region in the rain image separation map is the first pixel value, and the non-target object region in the rain image separation map corresponds to the first pixel value. The pixel value is the second pixel value;

According to the target object area and non-target object area of the initial synthetic rain image, and the non-target object area of the reference rain image, an enhanced rain image is obtained, including:

According to the rain image separation map, obtain the distance value of each pixel from the target object area in the rain image separation map;

According to the distance value of each pixel from the target object area in the rain image separation map and the preset maximum distance, a first weight value set and a second weight value set are obtained; the first weight value set includes the initial synthesis weight values corresponding to each pixel in the rain image, and the second set of weight values includes weight values corresponding to each pixel in the reference rain image;

The enhanced rain image is obtained according to the initial synthetic rain image, the reference rain image, the first weight value set and the second weight value set.

Further, obtaining the enhanced target object area according to the plurality of registered rain images includes:

respectively extracting target object regions in the multiple registered rain images;

The weighted average processing of pixel values is performed on the target object regions of the plurality of registered rain images to obtain the enhanced target object regions.

Further, in the first step, the germ collection module uses a germ detector to collect rainwater germ data, including:

Step A, insert a suitable TECRA "magnetic card" into the germ detector and input the rainwater-related information; put the detection plate on the support of the UNIQUEPLUS detector;

Step B, take 1 mL of enrichment culture-based tube 1; and put UNIQUE test strips in each detection plate, and put the bracket into the germ detector;

Step C, press Start to perform fully automatic operation, and then the detection data can be collected.

Further, in the second step, the main control module 4 for controlling the normal operation of each module by the main controller classifies the data as follows:

Collect rainwater image data according to the rainwater image collection module, the germ collection module collects rainwater germ data through a germ detector, and the rainwater volume collection module collects rainwater volume data and other data through a rain gauge, sets corresponding classification objects, and extracts corresponding features; and Establish the corresponding training data set;

According to the corresponding distance formula, calculate the distance between the classification object and the training data set; sort according to the distance, and classify the two objects with the smaller distance into one category;

Recalculate the distance between the classified object and other objects in the training dataset, and repeat the above steps until the classification is complete.

Further, in the step 3, the purification method of the purification module is as follows:

1) When receiving a sterilization instruction, control the purifier to operate the sterilization mode; when the time for the purifier to operate the sterilization mode reaches the first preset duration, control the purifier to switch to the ozone elimination mode and run the second preset duration;

2) Rainwater is filtered by primary filter screen and activated carbon filter; PP filter element is filtered to pretreat the incoming rainwater to filter out sediment, suspended solids, colloids and impurities in the water;

3) Activated carbon filter element is used to filter and absorb the different colors, odors, residual chlorine, halogenated hydrogen and organic substances in the water that are harmful to the human body;

4) The PP filter element is used to filter the pre-treated water, and then further filter the suspended solids, colloids and impurities in the water.

Another object of the present invention is to provide a roof garden rainwater utilization system for implementing the roof garden rainwater utilization method, and the roof garden rainwater utilization system includes:

Rainwater image collection module, germ collection module, rainwater volume collection module, main control module, rainwater image enhancement module, rainwater judgment module, filter module, sedimentation module, purification module, drip irrigation module, display module;

A rainwater image acquisition module, connected with the main control module, is used to collect rainwater image data through a camera;

The germ collection module is connected to the main control module and is used to collect rainwater germ data through the germ detector; insert the appropriate TECRA "magnetic card" into the germ detector and input the rainwater-related information; put the detection plate on the bracket of the UNIQUEPLUS detector; Take 1 mL of enrichment culture based on tube 1; and put UNIQUE test strips in each test plate, and put the bracket into the germ detector; press Start for automatic operation, and the test can be collected after a few hours data;

The rainwater collection module, which is connected with the main control module, is used to collect rainwater data through the rain gauge;

The main control module is connected with the rainwater image collection module, germ collection module, rainwater volume collection module, rainwater image enhancement module, rainwater judgment module, filter module, sedimentation module, purification module, drip irrigation module, and display module, and is used to pass the main controller. Control each module to work normally;

A rainwater image enhancement module, connected with the main control module, is used to enhance the collected rainwater images through an image enhancement algorithm; obtain a plurality of collected original rainwater images through the image enhancement algorithm, and the plurality of original rainwater images respectively include a target object area; according to the position corresponding to the target object area in the multiple original rain images, register the multiple original rain images to obtain multiple registered rain images; according to the multiple registered rain images, Obtain an enhanced target object area; take one rain image of the plurality of original rain images as a reference rain image, and determine a non-target object area of the reference rain image; compare the enhanced target object area and the benchmark The non-target object area of the rain image is synthesized to obtain an enhanced rain image;

The rainwater judgment module is connected with the main control module, and is used for judging the clarity of the rainwater according to the rainwater image through the judgment program.

Further, the main control module is respectively connected with the filter module, the precipitation module, the purification module and the drip irrigation module;

Filter module, used to filter rainwater impurities through the filter;

Sedimentation module for precipitation of rainwater turbidity by chemicals;

The purification module is used for purifying rainwater through the purifier; when receiving a sterilization instruction, it controls the purifier to operate the sterilization mode; when the time for the purifier to operate the sterilization mode reaches a first preset time period, it controls the purifier to switch to The ozone elimination mode runs for a second preset duration; rainwater is filtered through the primary filter screen and activated carbon; pp filter element is filtered to pretreat the incoming rainwater to filter out sediment, suspended solids, colloids and impurities in the water; activated carbon The filter element is used to filter the different colors, odors, residual chlorine, halogenated hydrogen and organic substances in the water that are harmful to the human body;

Drip irrigation module for drip irrigation of roof gardens through drip pipes;

The display module is used to display the collected rainwater images, germ data, rainwater quantity data, and judgment results through the display.

Combined with all the above-mentioned technical solutions, the advantages and positive effects possessed by the present invention are:

(1) The present invention collects rainwater image data through a camera by being provided with a rainwater image collection module, the germ collection module is used to collect rainwater germ data through a germ detector, and the rainwater quantity collection module collects rainwater quantity data through a rain gauge; the rainwater image enhancement module The collected rainwater images are enhanced through the image enhancement algorithm. The rainwater judgment module judges the clarity of the rainwater according to the rainwater images through the judgment program. The filter module filters the rainwater impurities through the filter screen. The drip irrigation module irrigates the roof garden through drip pipes. The present invention detects the rainwater in real time, ensures the safety of garden water, and avoids rainwater from causing damage to garden plants and affecting the growth of plants. At the same time, the invention can precipitate rainwater, ensure the clarity of the water, and prevent the plants from being covered with dust.

(2) The present invention not only obtains the enhanced target object area according to a plurality of registered rain images, but also determines the non-target object area of the reference rain image through the rain image enhancement module, so that according to the target object area and the non-target object area The enhanced rain image is obtained by synthesis, which greatly improves the clarity of the rain image.

(3) In the present invention, the germ collection module uses the germ detector to collect rainwater germ data, which can shorten the detection time and improve the work efficiency.

(4) In the present invention, the main control module classifies the data, which can reduce the space occupied by the data and increase the storage capacity of the storage module.

Description of drawings

1 is a schematic structural diagram of a roof garden rainwater utilization system provided by an embodiment of the present invention;

In the figure: 1. Rainwater image collection module; 2. Germs collection module; 3. Rainwater volume collection module; 4. Main control module; 5. Rainwater image enhancement module; 6. Rainwater judgment module; 7. Filtering module; 8. Precipitation module; 9. Purification module; 10. Drip irrigation module; 11. Display module.

FIG. 2 is a flowchart of a method for utilizing rainwater in a roof garden provided by an embodiment of the present invention.

FIG. 3 is a flowchart of a rain image enhancement module enhancement method provided by an embodiment of the present invention.

FIG. 4 is a flowchart of a method for collecting rainwater germ data by a germ collection module using a germ detector according to an embodiment of the present invention.

FIG. 5 is a flowchart of a purification method for a purification module provided by an embodiment of the present invention.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

In view of the problems existing in the prior art, the present invention provides a roof garden rainwater utilization system and method. The present invention will be described in detail below with reference to the accompanying drawings.

As shown in FIG. 1 , the roof garden rainwater utilization system provided by the embodiment of the present invention includes: a rainwater image collection module 1, a germ collection module 2, a rainwater volume collection module 3, a main control module 4, a rainwater image enhancement module 5, and a rainwater judgment module. 6. Filtration module 7, sedimentation module 8, purification module 9, drip irrigation module 10, display module 11.

The rainwater image acquisition module 1 is connected to the main control module 4, and is used for collecting rainwater image data through a camera.

The germ collection module 2 is connected with the main control module 4, and is used for collecting rainwater germ data through the germ detector.

The rainwater volume collection module 3 is connected to the main control module 4 and is used for collecting rainwater volume data through a rain gauge.

The main control module 4, together with the rainwater image collection module 1, the germ collection module 2, the rainwater volume collection module 3, the rainwater image enhancement module 5, the rainwater judgment module 6, the filter module 7, the sedimentation module 8, the purification module 9, the drip irrigation module 10, The display module 11 is connected to control the normal operation of each module through the main controller.

The rain image enhancement module 5 is connected with the main control module 4, and is used for enhancing the collected rain image through an image enhancement algorithm.

The rainwater judging module 6 is connected with the main control module 4, and is used for judging the clarity of rainwater according to the rainwater image through the judgment program.

The filter module 7 is connected with the main control module 4 and is used for filtering rainwater impurities through the filter screen.

The precipitation module 8 is connected with the main control module 4, and is used for precipitation of rainwater turbidity through chemical agents.

The purification module 9, connected with the main control module 4, is used for purifying rainwater through the purifier.

The drip irrigation module 10 is connected to the main control module 4 and is used for drip irrigation to the roof garden through drip pipes.

The display module 11, connected with the main control module 4, is used for displaying the collected rainwater image, germ data, rainwater quantity data and judgment result through the display.

As shown in FIG. 2 , a method for utilizing rainwater in a roof garden provided by an embodiment of the present invention includes:

S101: Collect rainwater image data with a camera through a rainwater image collection module, collect rainwater germ data with a germ detector through the germ collection module, and collect rainwater quantity data with a rain gauge through the rainwater quantity collection module.

S102: According to the above-mentioned data collected, the main control module uses an image enhancement algorithm to enhance the collected rain image through the rain image enhancement module; the rain judging module uses a judgment program to judge the clarity of the rain according to the rain image.

S103: According to the judgment result, use the filter screen to filter the rainwater impurities through the filter module, use the chemical agent to precipitate the rainwater turbidity through the precipitation module, and use the purifier to purify the rainwater through the purification module.

S104: After the processing is completed, drip irrigation is performed on the roof garden by using drip tubes through the drip irrigation module, and the collected rain images, germ data, rain water volume data, and judgment results are displayed through the display module through the display.

In S102 provided by the embodiment of the present invention, the enhancement method of the rain image enhancement module 5 is as follows:

S201: Obtain a plurality of collected original rain images through an image enhancement algorithm, where the multiple original rain images respectively include target object regions.

S202: Register the multiple original rain images according to the positions corresponding to the target object regions in the multiple original rain images to obtain multiple registered rain images.

S203: Obtain an enhanced target object region according to the multiple registered rain images.

S204: Use one rain image of the plurality of original rain images as a reference rain image, and determine a non-target object area of the reference rain image; The regions are synthesized to obtain an enhanced rain image.

According to the plurality of registered rain images provided by the present invention, the enhanced target object area is obtained, including:

performing weighted average processing of pixel values on the plurality of registered rain images to obtain an initial composite rain image, where the initial composite rain image includes the enhanced target object area;

Synthesizing the enhanced target object area and the non-target object area of the reference rain image, and obtaining the enhanced rain image includes:

Synthesizing the initial synthesized rain image and the non-target object area of the reference rain image to obtain an enhanced image.

The non-target object area of the initial synthetic rain image and the reference rain image provided by the present invention is synthesized to obtain an enhanced rain image, including:

determining the target object area and the non-target object area of the initial synthetic rain image;

Obtain an enhanced rain image according to the target object area and the non-target object area of the initial synthetic rain image, and the non-target object area of the reference rain image;

Wherein, the target object area in the enhanced rain image is obtained according to the target object area of the initially synthesized rain image, and the non-target object area in the enhanced rain image includes the same as that in the enhanced rain image. The transition area between the target object areas, and the non-transition area except the transition area, the transition area is based on the non-target object area of the reference rain image and the non-target object area of the initial synthetic rain image Obtaining, the non-transition area is obtained according to the non-target object area of the reference rain image.

Determining the target object area and the non-target object area of the initial synthetic rain image provided by the present invention includes:

A rain image segmentation map is generated according to the initial synthetic rain image; wherein, the pixel value corresponding to the target object region in the rain image separation map is the first pixel value, and the non-target object region in the rain image separation map corresponds to the first pixel value. The pixel value is the second pixel value;

According to the target object area and non-target object area of the initial synthetic rain image, and the non-target object area of the reference rain image, an enhanced rain image is obtained, including:

According to the rain image separation map, obtain the distance value of each pixel from the target object area in the rain image separation map;

According to the distance value of each pixel from the target object area in the rain image separation map and the preset maximum distance, a first weight value set and a second weight value set are obtained; the first weight value set includes the initial synthesis weight values corresponding to each pixel in the rain image, and the second set of weight values includes weight values corresponding to each pixel in the reference rain image;

The enhanced rain image is obtained according to the initial synthetic rain image, the reference rain image, the first weight value set and the second weight value set.

According to the plurality of registered rain images provided by the present invention, the enhanced target object area is obtained, including:

respectively extracting target object regions in the multiple registered rain images;

The weighted average processing of pixel values is performed on the target object regions of the plurality of registered rain images to obtain the enhanced target object region.

In S101 provided by the embodiment of the present invention, the process of collecting rainwater germ data by the germ collection module using a germ detector includes:

S301: Insert the appropriate TECRA "magnetic card" into the germ detector and enter the rainwater-related information; put the detection plate on the bracket of the UNIQUEPLUS detector.

S302: Take 1 mL of the enrichment culture base into tube 1; and put a UNIQUE test strip in each test plate, and put the bracket into the germ detector.

S303: Press Start for fully automatic operation, and the detection data can be collected after a few hours.

In S102 provided by the embodiment of the present invention, the process of classifying data by the main control module 4 for controlling the normal operation of each module through the main controller is as follows:

Collect rainwater image data according to the rainwater image collection module, the germ collection module collects rainwater germ data through a germ detector, and the rainwater volume collection module collects rainwater volume data and other data through a rain gauge, sets corresponding classification objects, and extracts corresponding features; and Set up the corresponding training data set.

According to the corresponding distance formula, the distance between the classification object and the training data set is calculated; according to the distance, it is sorted, and the two objects with the smaller distance are grouped into one category.

Recalculate the distance between the classified object and other objects in the training dataset, and repeat the above steps until the classification is complete.

In S103 provided by the embodiment of the present invention, the purification method of the purification module 9 provided by the embodiment of the present invention is as follows:

S401: When a sterilization instruction is received, control the purifier to operate the sterilization mode; when the time for the purifier to operate the sterilization mode reaches a first preset duration, control the purifier to switch to the ozone elimination mode and run a second preset duration.

S402: Rainwater is filtered through primary filter screen and activated carbon filter; pp filter element is filtered to pretreat the incoming rainwater to filter out sediment, suspended solids, colloids and impurities in the water.

S403: Activated carbon filter element is used for filtration to absorb the different colors, odors, residual chlorine, halogenated hydrogen and organic substances in the water that are harmful to the human body.

S404: PP filter element filtration, the pre-treated water quality is further filtered to remove suspended solids, colloids, impurities, etc. in the water to ensure that the filtration water quality meets the water quality requirements of the nanofiltration membrane.

When the present invention works, firstly, the rainwater image data is collected by the camera through the rainwater image collection module 1; the rainwater germ data is collected by the germ collection module 2 with the germ detector; the rainwater quantity data is collected with the rain gauge through the rainwater quantity collection module 3; secondly , the main control module 4 uses an image enhancement algorithm to enhance the collected rainwater image through the rainwater image enhancement module 5; the rainwater judgment module 6 uses a judgment program to judge the clarity of the rainwater according to the rainwater image; the filter module 7 uses a filter screen to filter the rainwater impurities Utilize chemical agent to precipitate rainwater turbidity through precipitation module 8; Utilize purifier to purify rainwater through purification module 9; Then, through drip irrigation module 10 utilize drip tube to carry out drip irrigation to the roof garden; Finally, utilize display module 11 to display collected rainwater Images, germ data, rainfall data, judgment results.

The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited to this. Any person skilled in the art is within the technical scope disclosed by the present invention, and all within the spirit and principle of the present invention Any modifications, equivalent replacements and improvements made within the scope of the present invention should be included within the protection scope of the present invention.

Claims (10)

1. a roof garden rainwater utilization method, is characterized in that, described roof garden rainwater utilization method, comprises: Step 1: Collect rainwater image data with a camera through the rainwater image collection module, collect rainwater germ data with a germ detector through the germ collection module, and collect rainwater quantity data with a rain gauge through the rainwater quantity collection module; In step 2, according to the above-mentioned data collected, the main control module uses an image enhancement algorithm to enhance the collected rainwater image through the rainwater image enhancement module; the rainwater judging module uses a judgment program to judge the clarity of the rainwater according to the rainwater image; Step 3, according to the judgment result, filter the rainwater impurities through the filter module using the filter screen, use the chemical agent to precipitate the rainwater turbidity through the precipitation module, and use the purifier to purify the rainwater through the purification module; Step 4: After the processing is completed, drip irrigation is performed on the roof garden by using drip tubes through the drip irrigation module, and the collected rainwater images, germ data, rainwater volume data, and judgment results are displayed on the display module through the display; The rain image enhancement module enhancement method is as follows: (1) obtaining a plurality of original rainwater images collected by an image enhancement algorithm, and the plurality of original rainwater images respectively include target object regions; (2) registering the plurality of original rain images according to the positions corresponding to the target object regions in the plurality of original rain images to obtain a plurality of registered rain images; (3) obtaining an enhanced target object area according to the plurality of registered rain images; (4) taking one rain image of the plurality of original rain images as the reference rain image, and determining the non-target object area of the reference rain image; The object area is synthesized to obtain an enhanced rain image. 2. The method for utilizing rainwater in a roof garden according to claim 1, wherein the obtaining an enhanced target object area according to the plurality of registered rainwater images comprises: performing weighted average processing of pixel values on the plurality of registered rain images to obtain an initial composite rain image, where the initial composite rain image includes the enhanced target object area; Synthesizing the enhanced target object area and the non-target object area of the reference rain image, and obtaining the enhanced rain image includes: Synthesizing the initial synthesized rain image and the non-target object area of the reference rain image to obtain an enhanced image. 3. The method for utilizing rainwater in a roof garden according to claim 2, wherein the synthesizing the initial synthetic rainwater image and the non-target object area of the reference rainwater image to obtain an enhanced rainwater image, comprising: determining the target object area and the non-target object area of the initial synthetic rain image; Obtain an enhanced rain image according to the target object area and the non-target object area of the initial synthetic rain image, and the non-target object area of the reference rain image; Wherein, the target object area in the enhanced rain image is obtained according to the target object area of the initially synthesized rain image, and the non-target object area in the enhanced rain image includes the same as that in the enhanced rain image. The transition area between the target object areas, and the non-transition area except the transition area, the transition area is based on the non-target object area of the reference rain image and the non-target object area of the initial synthetic rain image Obtaining, the non-transition area is obtained according to the non-target object area of the reference rain image. 4. The method for utilizing rainwater in a roof garden according to claim 3, wherein the determining the target object area and the non-target object area of the initial synthetic rainwater image comprises: A rain image segmentation map is generated according to the initial synthetic rain image; wherein, the pixel value corresponding to the target object region in the rain image separation map is the first pixel value, and the non-target object region in the rain image separation map corresponds to the first pixel value. The pixel value is the second pixel value; According to the target object area and non-target object area of the initial synthetic rain image, and the non-target object area of the reference rain image, an enhanced rain image is obtained, including: According to the rain image separation map, obtain the distance value of each pixel from the target object area in the rain image separation map; According to the distance value of each pixel from the target object area in the rain image separation map and the preset maximum distance, a first weight value set and a second weight value set are obtained; the first weight value set includes the initial synthesis weight values corresponding to each pixel in the rain image, and the second set of weight values includes weight values corresponding to each pixel in the reference rain image; The enhanced rain image is obtained according to the initial synthetic rain image, the reference rain image, the first weight value set and the second weight value set. 5 . The method for utilizing rainwater in a roof garden according to claim 1 , wherein, obtaining the enhanced target object area according to the plurality of registered rainwater images, comprising: 6 . respectively extracting target object regions in the multiple registered rain images; The weighted average processing of pixel values is performed on the target object regions of the plurality of registered rain images to obtain the enhanced target object regions. 6. The method for utilizing rainwater in a roof garden as claimed in claim 1, wherein in the step 1, the germ collection module uses a germ detector to collect rainwater germ data, comprising: Step A, insert a suitable TECRA "magnetic card" into the germ detector and input the rainwater-related information; put the detection plate on the support of the UNIQUEPLUS detector; Step B, take 1 mL of enrichment culture-based tube 1; and put UNIQUE test strips in each detection plate, and put the bracket into the germ detector; Step C, press Start to perform fully automatic operation, and then the detection data can be collected. 7. the roof garden rainwater utilization method as claimed in claim 1 is characterized in that, in described step 2, the main control module 4 that is used to control the normal operation of each module by the main controller classifies the data as follows: Collect rainwater image data according to the rainwater image collection module, the germ collection module collects rainwater germ data through a germ detector, and the rainwater volume collection module collects rainwater volume data and other data through a rain gauge, sets corresponding classification objects, and extracts corresponding features; and Establish the corresponding training data set; According to the corresponding distance formula, calculate the distance between the classification object and the training data set; sort according to the distance, and classify the two objects with the smaller distance into one category; Recalculate the distance between the classified object and other objects in the training dataset, and repeat the above steps until the classification is complete. 8. roof garden rainwater utilization method as claimed in claim 1 is characterized in that, in described step 3, purification module purification method is as follows: 1) When receiving a sterilization instruction, control the purifier to operate the sterilization mode; when the time for the purifier to operate the sterilization mode reaches the first preset duration, control the purifier to switch to the ozone elimination mode and run the second preset duration; 2) Rainwater is filtered by primary filter screen and activated carbon filter; PP filter element is filtered to pretreat the incoming rainwater to filter out sediment, suspended solids, colloids and impurities in the water; 3) Activated carbon filter element is used to filter and absorb the different colors, odors, residual chlorine, halogenated hydrogen and organic substances in the water that are harmful to the human body; 4) The PP filter element is used to filter the pre-treated water, and then further filter the suspended solids, colloids and impurities in the water. 9. A roof garden rainwater utilization system implementing the roof garden rainwater utilization method according to claims 1-8, wherein the roof garden rainwater utilization system comprises: Rainwater image collection module, germ collection module, rainwater volume collection module, main control module, rainwater image enhancement module, rainwater judgment module, filter module, sedimentation module, purification module, drip irrigation module, display module; A rainwater image acquisition module, connected with the main control module, is used to collect rainwater image data through a camera; The germ collection module is connected to the main control module and is used to collect rainwater germ data through the germ detector; insert the appropriate TECRA "magnetic card" into the germ detector and input the rainwater-related information; put the detection plate on the bracket of the UNIQUEPLUS detector; Take 1 mL of enrichment culture based on tube 1; and put UNIQUE test strips in each test plate, and put the bracket into the germ detector; press Start for automatic operation, and the test can be collected after a few hours data; The rainwater collection module, which is connected with the main control module, is used to collect rainwater data through the rain gauge; The main control module is connected with the rainwater image collection module, germ collection module, rainwater volume collection module, rainwater image enhancement module, rainwater judgment module, filter module, sedimentation module, purification module, drip irrigation module, and display module, and is used to pass the main controller. Control each module to work normally; A rainwater image enhancement module, connected with the main control module, is used to enhance the collected rainwater images through an image enhancement algorithm; obtain a plurality of collected original rainwater images through the image enhancement algorithm, and the plurality of original rainwater images respectively include a target object area; according to the position corresponding to the target object area in the multiple original rain images, register the multiple original rain images to obtain multiple registered rain images; according to the multiple registered rain images, Obtain an enhanced target object area; take one rain image of the plurality of original rain images as a reference rain image, and determine a non-target object area of the reference rain image; compare the enhanced target object area and the benchmark The non-target object area of the rain image is synthesized to obtain an enhanced rain image; The rainwater judgment module is connected with the main control module, and is used for judging the clarity of the rainwater according to the rainwater image through the judgment program. 10. The roof garden rainwater utilization system according to claim 1, wherein the main control module is respectively connected with a filter module, a sedimentation module, a purification module and a drip irrigation module; Filter module, used to filter rainwater impurities through the filter; Sedimentation module for precipitation of rainwater turbidity by chemicals; The purification module is used for purifying rainwater through the purifier; when receiving a sterilization instruction, it controls the purifier to operate the sterilization mode; when the time for the purifier to operate the sterilization mode reaches a first preset time period, it controls the purifier to switch to The ozone elimination mode runs for a second preset duration; rainwater is filtered through the primary filter screen and activated carbon; pp filter element is filtered to pretreat the incoming rainwater to filter out sediment, suspended solids, colloids and impurities in the water; activated carbon The filter element is used to filter the different colors, odors, residual chlorine, halogenated hydrogen and organic substances in the water that are harmful to the human body; Drip irrigation module for drip irrigation of roof gardens through drip pipes; The display module is used to display the collected rainwater images, germ data, rainwater quantity data, and judgment results through the display.

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