GB2627923A - Waste sorting device - Google Patents

Waste sorting device Download PDF

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Publication number
GB2627923A
GB2627923A GB2303225.3A GB202303225A GB2627923A GB 2627923 A GB2627923 A GB 2627923A GB 202303225 A GB202303225 A GB 202303225A GB 2627923 A GB2627923 A GB 2627923A
Authority
GB
United Kingdom
Prior art keywords
waste
item
sorted
sorting device
database
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
GB2303225.3A
Other versions
GB202303225D0 (en
Inventor
Unwin-Berrey Adam
Compton Steven
Andrew Durban John
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Primal Acad Innovations Ltd
Original Assignee
Primal Acad Innovations Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Primal Acad Innovations Ltd filed Critical Primal Acad Innovations Ltd
Priority to GB2303225.3A priority Critical patent/GB2627923A/en
Publication of GB202303225D0 publication Critical patent/GB202303225D0/en
Priority to PCT/EP2023/070369 priority patent/WO2024183929A1/en
Publication of GB2627923A publication Critical patent/GB2627923A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
    • B07C5/34—Sorting according to other particular properties
    • B07C5/342—Sorting according to other particular properties according to optical properties, e.g. colour
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65F—GATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE
    • B65F1/00—Refuse receptacles; Accessories therefor
    • B65F1/0033—Refuse receptacles; Accessories therefor specially adapted for segregated refuse collecting, e.g. receptacles with several compartments; Combination of receptacles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B13/00—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B13/00—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices
    • B07B13/14—Details or accessories
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
    • B07C5/34—Sorting according to other particular properties
    • B07C5/342—Sorting according to other particular properties according to optical properties, e.g. colour
    • B07C5/3422—Sorting according to other particular properties according to optical properties, e.g. colour using video scanning devices, e.g. TV-cameras
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65F—GATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE
    • B65F1/00—Refuse receptacles; Accessories therefor
    • B65F1/14—Other constructional features; Accessories
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C2501/00—Sorting according to a characteristic or feature of the articles or material to be sorted
    • B07C2501/0054—Sorting of waste or refuse
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65F—GATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE
    • B65F1/00—Refuse receptacles; Accessories therefor
    • B65F1/0033—Refuse receptacles; Accessories therefor specially adapted for segregated refuse collecting, e.g. receptacles with several compartments; Combination of receptacles
    • B65F2001/008—Means for automatically selecting the receptacle in which refuse should be placed

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Multimedia (AREA)
  • Processing Of Solid Wastes (AREA)
  • Refuse Collection And Transfer (AREA)

Abstract

A waste sorting device 300 comprising a plurality of containers 308, an image capture device 342 such as a camera, one or more actuators 350 for delivering waste into a container 308, and a controller 360 to operate the image capture device 342 to capture an image of a waste item, determine the material, and operate one or more actuators 350 to sort the waste into a container 308. The device may comprise a database of information relating to waste material, the controller 360 may determine the waste material by image processing, such as a symbol, identification code, using a likelihood threshold to determine whether the waste item corresponds to stored information in the database. There may be an external database, if information relating to the waste is not found in the database, the controller may prompt a user to provide identifying information relating to the waste.

Description

Waste Sorting Device
Technical Field
The present disclosure relates to a waste sorting device and is particularly, although not exclusively concerned with a waste sorting device for sorting items of household waste.
Background
Sorting items of household waste into different waste bins depending on the material composition of those waste items has become an important part of household waste management. The recycling processes of many waste collection organisations rely on sorting being performed by householders before their waste is collected, in order to improve the proportions of that waste that can be recycled. Additionally, many authorities have introduced measures to incentivise households to recycle more of their household waste, necessitating the sorting of waste in the home.
However, keeping multiple bins sufficient in size to store a convenient amount of sorted waste items can take up a large amount of space in the home. Further, ensuring that all items of waste are placed into the correct bin can be time consuming for householders and mistakes in waste sorting are undesirable.
Statements of Invention
According to an aspect of the present disclosure, there is provided a waste sorting device comprising: a plurality of containers for receiving items of waste that have been sorted; an image capture device for capturing an image of an item of waste to be sorted; one or more actuators for causing items of waste to be delivered into the containers; and a controller configured to: operate the image capture device to capture an image of an item of waste to be sorted by the device; determine a material of the item of waste to be sorted based on the image; and operate one or more of the actuators to cause the item of waste to be delivered into one of the containers based on the material of the item of waste.
The device may further comprise a memory storing a database comprising information identifying items of waste and materials of the waste items. The controller may be configured to determine the material of the item of waste to be sorted based on the information stored in the database.
The controller may be configured to determine the material of the item of waste to be sorted based on performing image processing on the image of the item of waste using information stored in the database. For example, the controller may be configured to determine the material of the item of waste to be sorted based on a comparison between the image of the item of waste and the information stored in the database. Additionally or alternatively, the controller may be configured to determine the material of the item of waste to be sorted using an artificial neural network, such as a convolutional neural network, stored in the database to process the image of the item of waste.
The controller may be configured to identify an identification code or symbol in the image of the item of waste to be sorted. The controller may be configured to determine information identifying the item of waste based on the identification code or symbol. The controller may be further configured to determine the material of the item of waste based on the information identifying the item of waste and the information stored in the database.
The controller may be configured to determine a size, shape and/or aspect ratio of the item of waste, e.g. based on the image of the item of waste or measurement from other sensors of the device. The controller may be configured to determine the material of the item of waste to be sorted, and/or a product to which the item of waste relates, based on the size, shape and/or aspect ratio of the item of waste, e.g. in combination with the image of the item of waste.
The controller may be configured to determine whether information relating to the item of waste to be sorted is stored within the database. Determining whether information relating to the item of waste to be sorted is stored within the database may comprise: determining a likelihood that the item of waste to be sorted corresponds to an item of waste information relating to which is stored within the database and comparing the likelihood to a threshold likelihood.
If information relating to the item of waste to be sorted is not stored within the database, the controller may be configured to prompt a user to provide an input to the device providing information identifying the item of waste material and/or indicating the material of the item of waste to be sorted. Prompting the user to provide the input may comprise determining which of the items of waste, information relating to which is stored within the database, are most likely to match the item of waste to be sorted.
Prompting the user to provide the input may further comprise prompting the user to confirm whether one or more items of waste determined most likely to match do match the item of waste to be sorted. If information relating to the item of waste to be sorted is not stored within the database, the controller may be configured to determine the material of the item of waste to be sorted based on information stored in an external (to the waste sorting device) database.
The controller may be configured to determine whether information relating to the item of waste to be sorted is stored within the external database. If information relating to the item of waste to be sorted is stored within the external database, the controller may be configured to store the information from the external database in the database. If information relating to the item of waste to be sorted is not stored within the external database, the controller may be configured to prompt the user to provide an input to the device providing information identifying the item of waste material and/or indicating the material of the item of waste to be sorted. If information relating to the item of waste to be sorted is not stored within the database or the external database, the controller may be configured to: prompt the user to provide an input to the device providing information identifying the item of waste material and/or indicating the material of the item of waste to be sorted.
Prompting the user to provide the input may comprise determining which of the items of waste, information relating to which is stored within the external database, are most likely to match the item of waste to be sorted. Prompting the user to provide the input may further comprise prompting the user to confirm whether one or more items of waste determined most likely to match do match the item of waste to be sorted.
The controller may be configured to receive an input via a user interface device of the waste sorting device, the input identifying an item of waste and/or a material of the item of waste to be sorted. The controller may be configured to store information identifying the item of waste to be sorted and/or the material identified in the input in the database.
The image capture device may be configured to capture an image of the item of waste to be sorted outside of the device. Operating the one or more of the actuators to cause the item of waste to be delivered into one of the containers may comprise operating one or more of the actuators to open an opening into the device to receive the item of waste to be sorted into the device. Additionally or alternatively, the image capture device may be configured to capture an image of the item of waste to be sorted inside an internal space of the device. Operating the one or more of the actuators to cause the item of waste to be delivered into one of the containers may comprise operating one or more of the actuators to guide the item of waste to be sorted from the internal space to the one of the containers.
The device may further comprise one or more waste processing modules operable to reduce a volume of an item of waste. Each of the waste processing modules may be configured to process items of waste of one or more different materials. Alternatively, a single waste processing module may be provided to reduce the volume of each of the items of waste sorted by the waste sorting device, e.g. regardless of material. The controller may be configured to operate one or more of the actuators to guide the item of waste to be sorted to one of the waste processing module based on the material of the item of waste.
A system for a waste sorting device may comprise the above-mentioned waste sorting; and one or more servers, e.g. provided remotely from the waste storing device, e.g. within one or more datacentres. The one or more servers may be communicatively coupled to the waste sorting device. The servers may comprise or be associated with one or more external memories storing an external database comprising information identifying items of waste and materials of the waste items.
The controller may be configured to access the external database stored in the external memory and determine the material of the item of waste to be sorted by the waste sorting device based on the information stored in the external database. Additionally or alternatively, the controller may be configured to send the image of the item of waste and/or sensor measurements of the item of waste to one or more of the servers and instruct the one or more servers to determine the material of the item of waste based on the image and/or measurements, and the information stored in the external database.
The one or more servers may be configured to determine a likelihood that the item of waste to be sorted by the waste sorting device corresponds to an item of waste information relating to which is stored in the external database. If the likelihood that the item of waste corresponds is equal to or above a threshold likelihood, the server may be configured to transmit the information identifying the item of waste and the material to the controller. If the likelihood of the item of waste corresponding is below the threshold likelihood, the sever may be configured to transmit a communication to the waste sorting device to inform the waste sorting device that the item of waste does not correspond to an item of waste in the external database. If the likelihood that the item of waste corresponds is below the threshold likelihood, the sever may be configured to transmit a communication to the waste sorting device informing the device of one or more items of waste which correspond most closely to the item of waste being sorted by the device.
According to another aspect of the present disclosure, there is provided a method for a waste sorting device comprising: capturing an image of an item of waste to be sorted using an image capture device of the waste sorting device; determining a material of the item of waste to be sorted based on the image; and operating one or more actuators of the waste sorting device to cause the item of waste to be delivered into one of a plurality of containers for receiving items of waste that have been sorted based on the material of the item of waste.
The method may comprise determining the material of the item of waste to be sorted based on the information stored in a database associated with the waste sorting device. The method may comprise determining the material of the item of waste to be sorted based on a comparison between the image of the item of waste and the information stored in the database.
The method may comprise identifying an identification code or symbol in the image of the item of waste to be sorted. The method may further comprise determining information identifying the item of waste based on the identification code or symbol.
The method may further comprise determining the material of the item of waste based on the information identifying the item of waste and the information stored in the database.
The method may comprise determining a size, shape and/or aspect ratio of the item of waste, e.g. based on the image of the item of waste or measurement from other sensors of the device. The method may further comprise determining the material of the item of waste to be sorted, and/or a product to which the item of waste relates, based on the size, shape and/or aspect ratio of the item of waste, e.g. in combination with the image of the item of waste.
The method may comprise determining whether information relating to the item of waste to be sorted is stored within the database. Determining whether information relating to the item of waste to be sorted is stored within the database may comprise: determining a likelihood that the item of waste to be sorted corresponds to an item of waste information relating to which is stored within the database and comparing the likelihood to a threshold likelihood. If information relating to the item of waste to be sorted is not stored within the database, the method may comprise prompting a user to provide an input to the device providing information identifying the item of waste material and/or indicating the material of the item of waste to be sorted. Prompting the user to provide the input may comprise determining which of the items of waste, information relating to which is stored within the database, are most likely to match the item of waste to be sorted. Prompting the user to provide the input may further comprise prompting the user to confirm whether one or more items of waste determined most likely to match do match the item of waste to be sorted. If information relating to the item of waste to be sorted is not stored within the database, the method may comprise determining the material of the item of waste to be sorted based on information stored in an external database.
The method may comprise determining whether information relating to the item of waste to be sorted is stored within the external database. If information relating to the item of waste to be sorted is stored within the external database, the method may comprise storing the information from the external database in the database. If information relating to the item of waste to be sorted is not stored within the external database, the method may comprise prompting the user, or another user, such as a super user, to provide an input to the waste sorting device providing information identifying the item of waste material and/or indicating the material of the item of waste to be sorted.
The method may comprise receiving an input via a user interface device of the waste sorting device, the input identifying an item of wate and/or a material of the item of waste to be sorted. Additionally, or alternatively, the method may comprise receiving the input via a communication module, such as a wireless communication module, provided on the waste sorting device. The method may further comprise storing information identifying the item of waste to be sorted and/or the material identified in the input in the database.
The image of the item of waste to be sorted may be captured outside of the device. Operating the one or more of the actuators to cause the item of waste to be delivered into one of the containers may comprise operating one or more of the actuators to open an opening into the device to receive the item of waste to be sorted into the device.
Additionally or alternatively, the image of the item of waste to be sorted may be captured inside an internal space of the device. Operating the one or more of the actuators to cause the item of waste to be delivered into one of the containers may comprise operating one or more of the actuators to guide the item of waste to be sorted from the internal space to the one of the containers.
The device may further comprise one or more waste processing modules operable to reduce a volume of an item of waste. Each of the waste processing modules may be configured to process items of waste of one or more different materials. The method may comprise operating one or more of the actuators to guide the item of waste to be sorted to one of the waste processing modules based on the material of the item of waste.
To avoid unnecessary duplication of effort and repetition of text in the specification, certain features are described in relation to only one or several aspects or embodiments of the invention. However, it is to be understood that, where it is technically possible, features described in relation to any aspect or embodiment of the invention may also be used with any other aspect or embodiment of the invention. For example, features described in relation to the first mentioned aspect may be combined with the features of the second mentioned aspect.
Brief Description of the Drawings
For a better understanding of the present invention, and to show more clearly how it may be carried into effect, reference will now be made, by way of example, to the accompanying drawings, in which: Figure 1 is a front perspective view of a waste sorting device according to arrangements of the present disclosure, with a waste container drawer in an open position; Figure 2 is a front perspective view of the waste sorting device with exterior panels of the device omitted for clarity; Figure 3 is a schematic side cross-sectional view of another waste sorting device according to arrangements of the present disclosure; Figure 4 is a flow chart depicting a method for a waste sorting device according to arrangements of the present disclosure; and Figure 5 is schematic view of a system for the waste sporting device according to
arrangements of the present disclosure.
Detailed Description
With reference to Figures 1 and 2, a waste sorting device 2, according to arrangements of the present disclosure, may comprise a frame 4, for supporting components of the waste sorting device 2 and one or more body panels 6 coupled to the frame for enclosing an interior of the device within which components and modules of the device are housed. The body panels 6 may be configured to provide an aesthetic exterior appearance of the waste sorting device 2.
The waste sorting device 2 comprises a plurality of containers 8 for receiving items of waste that have been sorted by the device 2. In the arrangement depicted, the waste sorting device comprises six containers 8. However, in other arrangements the waste sporting device 2 may comprise any other number of containers 8, such as 2, 3, 4, 5, 7, 8 or more than 8 containers. Each of the containers 8 may be for receiving items of waste of a particular material. For example, the plurality of containers 8 may comprise containers for receiving glass, paper, card, plastic, metal and/or any other materials respectively. Optionally, different ones of the containers may be for receiving different types of plastic, glass or metal. For example, the waste sorting device may comprise separate containers for receiving polyethylene terephthalate (PET), high density polyethylene (HDPE), low density polyethylene (LDPE), polyvinyl chloride (PVC), polypropylene (PP), poly styrene (PS), and/or other plastic materials; separate containers for receiving tin, steel, aluminium and other metals respectively; and/or separate containers for receiving colourless and coloured glass, such as green and/or brown glass respectively. Additionally or alternatively, one or more of the containers 8 may be for receiving a combination of the above-mentioned plastic, metal or glass materials. For example, one of the containers 8 maybe for receiving LDPE, HDPE and PET, or any other combination. In some arrangements, one or more of the containers may be for receiving items of waste of two or more materials. For example, one of the containers may be for receiving paper, cardboard and metal. Additionally or alternatively, one of the containers may be for receiving metal and plastic, e.g. one or more plastic materials. Additionally or alternatively again, one of the containers may be for receiving any other combination of materials. As described herein, the waste sorting device 2 may be configured to sort items of waste into the appropriate containers.
The containers 8 may be arranged within a drawer 10, which may be removable, e.g. may be slid out, from within the interior of the waste sorting device 2 for a user to access the containers 8. The containers 8 may be removable from the drawer 10 to facilitate emptying of the containers. In other arrangements, the containers may be removably mounted in the waste sorting device in any other way.
The waste sorting device 2 may comprise one or more sensors configured to measure a weight and/or height of waste within the respective containers. Maximum desirable values of weight and/or height of waste to be stored within the containers, e.g. the respective containers, may be predetermined, e.g. based on legislation, or selected by a user and may be stored by the waste sorting device 2. The waste sorting device 2 may be configured to prevent an item of waste from being sorted into a container if the weight and/or height of waste within the container is equal to or greater that the maximum desirable value, or if sorting the item of waste into the container will result in the weight and/or height of waste within the container exceeding the maximum desirable value of weight and/or height for the container. For example, the waste sorting device may prompt a user to empty the container before the item of waste is sorted or delivered to the container.
The waste sorting device 2 may further comprise one or more openings 12, which may be selectively closed by one or more doors 14 respectively. The waste sorting device 2 may be configured to receive the items of waste to be sorted within one of the openings 12 and may deliver the item of waste to the appropriate container 8. In Figures 1 and 2, the openings 12 are provided on a front side of the waste sorting device 2. However, in other arrangements, the openings 12 may be provided or any other side or on the top of the waste sorting device.
The waste sorting device 2 may further comprise one or more waste processing modules 20 operable to process the items of waste being sorted by the device to reduce a volume of the items of waste prior to the waste materials being delivered into the containers 8.
In some arrangements, one or more of the waste processing modules 20 may be specific to the material of the item of waste being sorted. For example, the waste processing modules 20 may comprise a glass crusher 22 for crushing glass waste items, a shredder module 24 for shredding paper, card and/or plastic waste items, and/or a crusher module 26 for crushing metal waste items. The one or more waste processing modules 20 may be arranged in one or more paths that the items of waste may be conducted through between one or more of the openings 12 and the containers 8. For example, each of the openings may be associated with one of the waste processing modules 20 and one or more of the containers 8.
In other arrangements, the wase sorting device 2 may comprise a single waste processing module 20 configured to process the items of waste being sorted by the device to reduce a volume of the items of waste, e.g. regardless of their material.
In some arrangements, such as that depicted in Figures 1 and 2, the waste sorting device 2 may be configured to receive items of waste of particular materials within a particular one or ones of the openings 12. For example, the waste sorting device 2 may be configured to receive glass waste items within a first opening, card, paper and/or plastic waste items within a second opening, and metal items within a third opening. In other arrangements, the waste sorting device 2 may comprise any other number of openings and may be configured to receive items of waste of any material or any combination of materials within particular ones of the openings. Each of the openings 12 may be associated with one of the waste processing modules 20. Hence, receiving wate items of particular materials within particular ones of the openings may enable the waste items to be delivered to the waste processing module 20 that is appropriate for processing the material of the waste item.
The waste sorting device 2 may further comprise a user interface 30, such as a touch screen, for receiving inputs from the user. For example, as described in greater detail below, the user may provide inputs to the waste sorting device 2 identifying an item of waste material to be sorted and/or a material of the item of waste. Additionally or alternatively, the waste sorting device 2 may further comprise a communication module, such as a wireless communication module, and may be configured to receive the inputs via the communication module. In such arrangements, the user may provide the inputs using a separate computing device, such as a computer, tablet computer, or smartphone, which may communicate the inputs to the waste sorting device 2 via the communication module.
With reference to Figure 3, a waste sorting device 300 according to another arrangement of the disclosure will now be described. The waste sorting device 300 may be similar to the waste sorting device 2 described above and the features described in relation to the waste sorting device 2 may also apply to the waste sorting device 300 and vice versa. The waste sorting device 300 differs from the waste sorting device 2 in that the waste sorting device 300 comprises a single opening 312 for receiving waste items to be sorted by the device 300. The single opening may be selectively closed by a door 314.
As depicted in Figure 3, the waste sorting device 300 further comprises one or more sensors 340, such as an image capture sensor 342, e.g. a camera or 3D camera, a proximity sensor, such as an ultrasound sensor 346, and/or a hall effect sensor 348.
The sensors 340 are for capturing an image of the item of waste to be sorted by the device 300 and optionally for measuring one or more parameters of an item of waste to be sorted. For example, the sensors 340 may be configured to measure a size, shape, aspect ratio and/or magnetic field strength of the item of waste.
The waste sorting device 300 further comprises one or more actuators 350. The actuators 350 may be configured to cause the items of waste material to be delivered into the containers 8, 308. The one or more actuators 350 may be configured to cause the items of waste to be delivered to a particular one of containers 308 that is appropriate for the material of the item of waste material. When the waste sorting device 300 comprises two or more waste processing modules 320, the actuators may be configured to cause the items of waste to be delivered to an appropriate waste processing module before being delivered to the containers 308. Alternatively, when the waste sorting device 300 comprises a single waste processing module, the one or more actuators 350 may be configured to direct the items of waste material towards the appropriate container after the item of waste has been processed by the waste processing module.
In some arrangements, one or more of the actuators 350 may be configured to directly displace the items of waste being sorted by the device 300 to deliver the items of waste to the waste processing modules 320 and/or containers 308, e.g. by pushing against the items of waste. Additionally or alternatively, the actuators 350 may be configured to cause the items of waste to be delivered to an appropriate waste processing module and/or container 308 by displacing, e.g. moving and/or tilting, one or more interior surfaces of the waste sorting device to allow or cause the items of waste material to move with and/or over the interior surface. Additionally or alternatively again, one or more of the actuators 350 may be configured to cause the items of waste to be sorted to be delivered to a particular one of the containers by opening one of the doors 14, 314 covering an opening 12, 312 that leads to the appropriate waste processing module and/or container 8, 308. In this way, when the item of waste is input to the waste sorting device 2, 300 via the opening 12, 312 that has been opened by the actuator 350, then the waste item is conducted through the device to reach the appropriate waste processing module 320 and/or container 308.
One or more of the sensors 340 may be configured to capture an image and/or sense one or more parameters of the item of waste prior to the item of waste being inserted into one of the openings 312 into the device 300. For example, the sensors 340 may comprise an image capture device 342 configured to capture an image of an item of waste being held by a user, e.g. proximate the sensor. Additionally or alternatively, one or more of the sensors 340 may be configured to capture an image and/or sense one or more parameters of the item of waste after the item of waste has been inserted into one of the openings 12, 312.
As depicted in Figure 3, the waste sorting device 300 may comprise an internal space 352 within which an item of waste is received after being inserted into the opening 312. When one or more of the sensors 340 are configured to capture an image and/or sense one or more parameters of the item of waste after the item of waste has been inserted into one of the openings 12, 312, this may be performed whilst the item of waste is within the interior space 352. Further, the one or more actuators 350 may be configured to displace the items of waste material out of the interior space, as described above, in order to cause the items of waste material to be delivered to the containers 308.
The waste sorting device 300 further comprises a controller 360. The controller 360 is configured to control the operation of the waste sorting device 2, 300. In particular, the controller 360 may be configured to control the operation of the sensors 340, e.g. the image capture device 342, the one or more actuators 350 and, optionally, the one or more waste processing modules 320. Additionally, the controller 360 may be configured to receive inputs from a user via the user interface 30, 330.
With reference to Figure 4, the controller 360 may be configured to control the operation of the waste sorting device according to a method 400. The method 400 comprises a first step 402, at which the controller operates one or more sensors 340 to capture an image of an item of waste to be sorted by the device 300 and/or measure a parameter of the item of waste.
In some arrangements, during the first step 402, the controller 360 may be configured to determine a certainty value of the, or each, parameter measured by the one or more sensors 340. For example, the controller may be configured to determine a certainty value based on an accuracy of the sensor within a measurement range within which the sensor is operating 340. The certainty value may correspond to a probability of the item of waste being a particular material based on the, or each, parameter measured by the one or more sensors 340 and/or the image of the item of waste.
The method 400 further comprises a second step 404, in which the controller 360 determines a material of the item of waste, e.g. a material from which a majority of the item of waste is formed, by weight or volume.
In the second step 404, the controller 360 is configured to determine the material of the item of waste based on the image captured of the item of waste. Additionally or alternatively, the controller 360 may determine the material of the item of waste based on the parameters of the item of waste measured by the sensors 340. For example, the controller may be configured to determine the material of the item of waste to be sorted, and/or a product to which the item of waste relates, based on the size, shape and/or aspect ratio of the item of waste, e.g. in combination with the image of the item of waste.
The controller 360 may be configured to determine the material of the item of waste based on the certainty value of the, or each, parameter measured by the one or more sensors 340 and/or a certainty value determined based on the image of the item of waste.
The waste sorting device 2 may further comprise a memory 362, e.g. provided as part of or associated with the controller 360, the memory 362 may store a database comprise information for identifying items of waste, and materials of the waste items. The information identifying the items of waste may include a product name to which the item of waste relates, one or more images of the item of waste and/or one or more parameters of the items of waste that correspond to those that may be measured by the sensors 340. The controller 360 may be configured to determine the material of the item of waste to be sorted based on the information stored in the database. For example, the controller 360 may be configured to perform a comparison between the image of the item of waste, e.g. captured by the sensors, and/or the parameters of the item of waste with the information stored in the database, e.g. the information for identifying items of waste.
In some arrangements, the memory may store parameters, e.g. weights and biases, defining an artificial neural network, such as a convolutional neural network, trained to recognise items of waste based on inputs comprising images of the item of waste and/or parameters relating to the item of waste measured by the sensors 340. The controller 360 may be configured to determine the material of the item of waste by providing the image captured by the sensors 340 and/or one of more of the parameters measured by the sensors as inputs to the artificial neural network. The artificial neural network may be trained to output a material of the item of waste material or information identifying the waste material, such as a product name, which can be used to determine the material from the database.
In some arrangements, the artificial neural network, may be trained to recognise a symbol, e.g. a recycling symbol, on the item of waste material that is visible in the captured image. The controller 360 may be configured to determine the material of the item of waste based on the recycling symbol on the item of waste.
In some arrangements, the sensors 340 may comprise a scanner configured to read a bar code, e.g. a 1-dimensional or 2-dimensional bar code, such as a QR code. On the item of waste material. The controller 360 may be configured to identify the item of waste and/or determine the material of the item of waste based on the information provided in the barcode. In other arrangements, the controller may be configured to read or recognise a barcode visible in the image of the item of waste captured by the camera.
In some arrangements, the controller 360 may be configured to determine a likelihood of the item of waste corresponding to an item of waste, information relating to which is stored in the database and/or which the artificial neural network is trained to recognise.
If the likelihood of the item of waste corresponding is equal to or above a threshold likelihood, the method 400 may proceed to a third step 406, described below. If the likelihood of the item of waste corresponding is below the threshold likelihood, then, in the second step 404, the controller 360 may determine the material of the item of waste to be sorted based on the information stored in an external database, as described below. Additionally or alternatively, the controller 360 may be configured to present the information identifying the item of waste from the database to the user via the user interface and prompt the user to provide an input confirming whether the information matches the item of waste to be sorted. If the device 300 receives an input confirming that the item of waste does match, then the method may proceed to the third step 406.
Otherwise, e.g. if the user provides an input confirming that the item of waste does not match, the controller 360 may determine the material of the item of waste to be sorted based on the information stored in the external database. In other arrangements, the controller 360 may proceed with determining the material of the item of waste to be sorted based on the information stored in the external database whilst awaiting the input from the user.
With reference to Figure 5, the waste sorting device 300 may operate within a system 500. The system comprises the waste sorting device 300 and one or more servers 502. The servers 502 may comprise or be associated with an external memory storing the external database comprising information for identifying items of waste, and materials of the items of waste. In the second step 406 of the method, the controller 360 may be configured to access the external database stored in the external memory and determine the material of the item of waste to be sorted by the device 300 based on the information stored in the external database. Alternatively, the controller 360 may send the image and/or measurements of the item of waste from the sensors 340 to the one or more servers 502 and instruct the one or more servers 502 to determine the material of the item of waste based on the image and/or measurements and the information stored in the external database.
In some arrangements, the external memory may store a plurality of parameters, e.g. weights and biases, defining an artificial neural network trained for recognising items of waste. The controller 360 may instruct the one or more servers 502 to input the image and/or parameters measured by the sensors to the artificial neural network to identify the item of waste and/or the material of the item of waste. The artificial neural network of the servers 502 may be configured to determine the material of the item of waste based on the recycling symbol or barcode on the item of waste, e.g. visible in the image. Additionally or alternatively, the one or more servers 502 may be configured to determine the material of the item of waste based on the barcode data read by the scanner or recognised by the controller 360 of the waste sorting device 300, which may be sent to the one or more servers 502 for this purpose. A barcode database may be stored in the external memory and the one or more servers may determine an identity of the item of waste and/or the material of the item of waste by searching the barcode database for the barcode data received from the controller 360 or determined by the server. Additionally or alternatively, the one or more servers may access a further barcode database, which is external to the servers 502, e.g. made available by a third party, to search for information identifying the item of waste based on the barcode data, and/or use an external, e.g. third party, service to search for information identifying the item of waste based on the barcode data, e.g. within the further barcode database.
The controller 360 or the one or more servers 502 may be configured to determine a likelihood that the item of waste to be sorted by the waste sorting device 300 corresponds to an item of waste information relating to which is stored in the external database and/or which the external artificial neural network is trained to recognise.
If it is determined that the likelihood of the item of waste corresponding is equal to or above a threshold likelihood, the server 502 may transmit the information identifying the item of waste and the material to the controller 360 to be stored in the database stored within the memory of the waste sorting device. The server 502 may transmit the information to the controller 360 in response to a request from the controller 360 to send the information, or may send the information automatically on determining the material of the item of waste or that the likelihood of the item of waste corresponding is equal to or above the threshold likelihood.
If it is determined that the likelihood of the item of waste corresponding is below the threshold likelihood, then, the sever 502 may be configured to perform one or more further actions in order to identify the material of the item of waste and, optionally, information identifying of the item of waste. Additionally or alternatively, the one or more servers 502 may transmit a communication to the waste sorting device 300, e.g. to the controller 360, to inform the waste sorting device that the item of waste does not correspond to an item of waste in the external database.
In some arrangements, when the item of waste does not correspond to an item of waste in the external database, the one or more servers 502 may transmit a communication to the waste sorting device 300 informing the device of one or more items of waste which correspond most closely to the item of waste being sorted by the device 300. The controller 360 may then present the information identifying the items of waste from the external database to the user via the user interface and prompt the user to provide an input confirming whether the information matches the item of waste to be sorted, in the same way as described above. If the device 300 receives an input confirming that the item of waste does match, then the method may proceed to the third step 406.
The system 500 may comprise one or more further waste sorting devices 504, which may be similar to the waste sorting device 300. The one or more further actions may comprise the server 502 transmitting the image of the item of waste and/or the measurements from the sensors of the waste sorting device 300 to one or more of the further waste sorting device 504 and requesting that the one or more further waste sorting device 504 attempt to determine the material of the item of waste and optionally information identifying of the item of waste based on information stored within their own respective databases. In this case, the one or more further waste sorting devices may attempt to determine the material of the item of waste and optionally information identifying of the item of waste in the same was as the waste processing device 300 as described above. If the material of the item of waste is determined by one or more of the further waste sorting devices, then the one or more further waste sorting device may transmit the material of the item of waste and optionally information identifying of the item of waste to one or more of the servers 502. The one or more servers may store the information from the one or more further waste sorting device in the external database. Additionally or alternatively, one or more of the servers 502 may transmit the material of the item of waste and optionally information identifying of the item of waste to the waste sorting device 300 to be stored in the database stored within the memory of the waste sorting device.
The one or more further actions may comprise one or more of the servers 502 transmitting the image of the item of waste to an external image recognition service, e.g. provided by a server outside of the system, e.g. third party, and requesting that the external image recognition service determine the identity of the item of waste. If the external image recognition service returns information identifying the item of waste, the one or more servers, may be configured to determine the material of the item of waste based on the information identifying the item of waste from the external image recognition service, e.g. by comparing the information from the external image recognition service with information within the external database.
If the controller 360 receives the communication from one or more of the servers 502 informing the waste sorting device that the item of waste does not correspond to an item of waste in the external database, or that the server 502 has been unable to match the item of waste to an entry in the external database, then the controller 360 may perform a user input step 408, depicted in Figure 4, in which a user is prompted to input a material of the item of waste via the user interface. In the user input step 408, the controller 360 may be configured to present the user, via the user interface, with information identifying the items of waste within the database and/or the external database that correspond most closely to the item of waste being sorted by the device 300. The user may be prompted to confirm that the item of waste is one of the items of waste presented to them, or to input a material of the item of waste via the user interface. Optionally, the user may input information identifying the item of waste, such as a product name to which the item of waste relates. Additionally, the user may input information relating to a type/variety, size, brand and/or barcode of the product to which the item of waste relates. The user input step 408 may be performed after the one or more further actions have been performed, e.g. if the identity and/or material of the item of waste has not been identified through the one or more further actions.
In response to receiving the input by the user, the controller 360 may update the database to store the material of the item of waste together with information identifying the item of waste, e.g. the image of the item of waste, measurement from the sensors 340 and/or information input by the user. In some arrangements, the controller may transmit the information input by the user to one or more of the servers 502 to be stored in the external database. The method 400 may then proceed to the third step 406.
Returning to Figure 4, the method 400 further comprises the third step 406, in which the controller 360 operates one or more of the actuators 350 to cause the item of waste material to be delivered to one of the containers 8 based on the material of the item of waste. In arrangements in which the waste sorting device comprises a plurality of openings 12, 312, one or more of the actuators 350 may be configured to open one of the doors 14, 314 covering the openings, so that the item of waste can be inserted into the waste processing device through one of the openings. Operating the one or more actuators to cause the item of waste material to be delivered to one of the containers may comprise opening the door 14, 314 of the appropriate opening 12, 312.
In arrangements in which the waste sorting device 300 comprises an internal space 352 within which an item of waste material is received after being inserted into the opening 312, and optionally a single opening 312, operating the one or more actuators 350 to cause the item of waste material to be delivered to one of the containers may comprise displacing the item of waste material out of the internal space 352 towards the containers.
As described above, the item may pass through one of the waste processing modules before reaching the containers 8, 308. In the third step, the controller 360 may operate one of the waste processing modules 320 through which the item of waste will pass to reach the container, e.g. in order to shred or crush the item of waste.
Before, after or during the third step, the controller 360 may store the information relating to the item of waste material in a list of items of waste that have been sorted by the device. The list of items of waste may comprise a list of products the items of waste relate to. The list of items of waste may be transmitted to one or more remote servers for storage and optionally further processing. The remote server may be a server of an online shopping service and/or waste recycling or collection organisation. In this way, the waste sorting device may automatically create a shopping list with the online shopping service for replacing the items the waste for which has been sorted. Further, the waste recycling or collection organisation may be informed of a quantity of waste to be collected.
It will be appreciated by those skilled in the art that although the invention has been described by way of example, with reference to one or more exemplary examples, it is not limited to the disclosed examples and that alternative examples could be constructed without departing from the scope of the invention as defined by the appended claims.

Claims (23)

  1. Claims 1. A waste sorting device comprising: a plurality of containers for receiving items of waste that have been sorted; an image capture device for capturing an image of an item of waste to be sorted; one or more actuators for causing items of waste to be delivered into the containers; and a controller configured to: operate the image capture device to capture an image of an item of waste to be sorted by the device; determine a material of the item of waste to be sorted based on the image; and operate one or more of the actuators to cause the item of waste to be delivered into one of the containers based on the material of the item of waste.
  2. 2. The waste sorting device of claim 1, wherein the device further comprises a memory storing a database comprising information identifying items of waste and materials of the waste items, wherein the controller is configured determine the material of the item of waste to be sorted based on the information stored in the database.
  3. 3. The waste sorting device of claim 2, wherein the controller is configured to determine the material of the item of waste to be sorted based on performing image processing on the image of the item of waste using information stored in the database.
  4. 4. The waste sorting device of claim 2 or 3, wherein the controller is configured to identify an identification code or symbol in the image of the item of waste to be sorted; determine information identifying the item of waste based on the identification code or symbol; and determine the material of the item of waste based on the information identifying the item of waste and the information stored in the database.
  5. 5. The waste sorting device of any of claims 2 to 4, wherein the controller is configured to determine whether information relating to the item of waste to be sorted is stored within the database.
  6. 6. The waste sorting device of claim 5, wherein determining whether information relating to the item of waste to be sorted is stored within the database comprises: determining a likelihood that the item of waste to be sorted corresponds to an item of waste information relating to which is stored within the database; and comparing the likelihood to a threshold likelihood.
  7. 7. The waste sorting device of any of claims 5 to 6, wherein if information relating to the item of waste to be sorted is not stored within the database, the controller is configured to prompt a user to provide an input to the device providing information identifying the item of waste material and/or indicating the material of the item of waste to be sorted.
  8. 8. The waste sorting device of any of claims 5 to 7, wherein if information relating to the item of waste to be sorted is not stored within the database, the controller is configured to determine the material of the item of waste to be sorted based on information stored in an external database.
  9. 9. The waste sorting device of claim 8, wherein the controller is configured to determine whether information relating to the item of waste to be sorted is stored within the external database.
  10. 10. The waste sorting device of claim 9, wherein if information relating to the item of waste to be sorted is stored within the external database, the controller is configured to store the information from the external database in the database.
  11. 11. The waste sorting device of claim 9 or 10, wherein if information relating to the item of waste to be sorted is not stored within the external database, the controller is configured to: prompt the user to provide an input to the device providing information identifying the item of waste material and/or indicating the material of the item of waste to be sorted.
  12. 12. The waste sorting device of any of claims 2 to 11, wherein the controller is configured to: receive an input via a user interface device of the waste sorting device, the input identifying an item of waste and/or a material of the item of waste to be sorted; and storing information identifying the item of waste to be sorted and/or the material identified in the input in the database.
  13. 13. The waste sorting device of any of the preceding claims, wherein the image capture device is configured to capture an image of the item of waste to be sorted outside of the device, and wherein operating the one or more of the actuators to cause the item of waste to be delivered into one of the containers comprises operating one or more of the actuators to open an opening into the device to receive the item of waste to be sorted into the device.
  14. 14. The waste sorting device of any of the preceding claims, wherein the image capture device is configured to capture an image of the item of waste to be sorted inside an internal space of the device, wherein operating the one or more of the actuators to cause the item of waste to be delivered into one of the containers comprises operating one or more of the actuators to guide the item of waste to be sorted from the internal space to the one of the containers.
  15. 15. The waste sorting device of any of the preceding claims, wherein the device further comprises one or more waste processing modules operable to reduce a volume of an item of waste, wherein each of the waste processing modules is configured to process items of waste of a different material, wherein the controller is configured to operate one or more of the actuators to guide the item of waste to be sorted to one of the waste processing module based on the material of the item of waste.
  16. 16. A system for a waste sorting device, wherein the system comprises: the waste sorting device of any of the preceding claims; and one or more servers communicatively coupled to the waste sorting device, wherein the servers are associated with one or more external memories storing an external database comprising information identifying items of waste and materials of the waste 30 items.
  17. 17. The system of claim 16, wherein the controller is configured to access the external database stored in the external memory and determine the material of the item of waste to be sorted by the waste sorting device based on the information stored in the external database.
  18. 18. The system of claim 16 or 17, wherein the controller is configured to send the image of the item of waste to one or more of the servers and instruct the one or more servers to determine the material of the item of waste based on the image and/or measurements and the information stored in the external database.
  19. 19. The system of any of claims 16 to 18, wherein the one or more servers are configured to determine a likelihood that the item of waste to be sorted by the waste sorting device corresponds to an item of waste information relating to which is stored in the external database.
  20. 20. The system of claim 19, wherein if the likelihood that the item of waste corresponds is equal to or above a threshold likelihood, the server is configured to transmit the information identifying the item of waste and the material to the controller.
  21. 21. The system of claim 19 or 20, wherein, if the likelihood of the item of waste corresponding is below the threshold likelihood, the sever is configured to transmit a communication to the waste sorting device to inform the waste sorting device that the item of waste does not correspond to an item of waste in the external database.
  22. 22. The system of claim 21, wherein, if the likelihood of the item of waste corresponding is below the threshold likelihood, the sever is configured to transmit a communication to the waste sorting device informing the device of one or more items of waste which correspond most closely to the item of waste being sorted by the device.
  23. 23. A method for a waste sorting device comprising: capturing an image of an item of waste to be sorted using an image capture device of the waste sorting device; determining a material of the item of waste to be sorted based on the image; and operating one or more actuators of the waste sorting device to cause the item of waste to be delivered into one of a plurality of containers for receiving items of waste that have been sorted, based on the material of the item of waste.10 15 20
GB2303225.3A 2023-03-06 2023-03-06 Waste sorting device Pending GB2627923A (en)

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