CN113102279A - Intelligent clothes sorting system - Google Patents

Intelligent clothes sorting system Download PDF

Info

Publication number
CN113102279A
CN113102279A CN202110244071.6A CN202110244071A CN113102279A CN 113102279 A CN113102279 A CN 113102279A CN 202110244071 A CN202110244071 A CN 202110244071A CN 113102279 A CN113102279 A CN 113102279A
Authority
CN
China
Prior art keywords
sorting
chain
clothes
pitch
clothing
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.)
Granted
Application number
CN202110244071.6A
Other languages
Chinese (zh)
Other versions
CN113102279B (en
Inventor
王志恒
荀一
鲍官军
高峰
都明宇
杨庆华
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.)
Zhejiang University of Technology ZJUT
Original Assignee
Zhejiang University of Technology ZJUT
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 Zhejiang University of Technology ZJUT filed Critical Zhejiang University of Technology ZJUT
Priority to CN202110244071.6A priority Critical patent/CN113102279B/en
Publication of CN113102279A publication Critical patent/CN113102279A/en
Application granted granted Critical
Publication of CN113102279B publication Critical patent/CN113102279B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07CPOSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00Sorting 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
    • B07C5/34Sorting according to other particular properties
    • B07C5/3412Sorting according to other particular properties according to a code applied to the object which indicates a property of the object, e.g. quality class, contents or incorrect indication
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07CPOSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00Sorting 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
    • B07C5/02Measures preceding sorting, e.g. arranging articles in a stream orientating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07CPOSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00Sorting 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
    • B07C5/36Sorting apparatus characterised by the means used for distribution
    • B07C5/361Processing or control devices therefor, e.g. escort memory
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07CPOSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00Sorting 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
    • B07C5/36Sorting apparatus characterised by the means used for distribution
    • B07C5/361Processing or control devices therefor, e.g. escort memory
    • B07C5/362Separating or distributor mechanisms

Landscapes

  • Control Of Conveyors (AREA)

Abstract

The intelligent clothes sorting system comprises a long-distance chain conveying line, a pitch subdivision and pitch counting positioning sensing system and a clothes sorting information acquisition system, wherein the long-distance chain conveying line comprises a chain device, a three-phase asynchronous motor and a cylinder, clothes hooks are arranged on the chain device at equal distances, the three-phase asynchronous motor for driving the chain to move and a sorting station adopting a cylinder sorting mode are arranged at the turning part of the chain device respectively, and a set of pitch subdivision and pitch counting positioning sensing system and a clothes sorting information acquisition system are arranged at the inlet of the chain conveying line. The clothes sorting system provided by the invention has the advantages that the sorting method is novel in conception, the hardware mechanism is simple, the defects in the prior art are overcome, and the system has certain universality for the long-distance chain conveying sorting system.

Description

Intelligent clothes sorting system
Technical Field
The invention relates to a long-distance (more than 500 meters) chain clothes conveying and sorting system. The system can accurately realize the correct sorting of the clothes by using less hardware support.
Background
With the development of society, more and more articles need to be washed and protected in hotels, residents, families, group work clothes, performance industries and the like, and meanwhile, some high-grade articles are not suitable for family washing and the pursuit of people on the quality of life, and the outward delivery of dry cleaning service becomes a trend. Traditional street dry cleaners, the scale is relatively less, and lacks effectual quality management and control, and the laundry quality is jaggy, can't satisfy current demand, therefore, the intelligent service of protecting of scale comes up to now.
The large-scale intelligent washing and caring service comprises 3 parts such as the Internet +, an intelligent washing and caring system and an own distribution system, and combines the traditional washing and caring service industry with modern information technology, intelligent washing and caring factories and intelligent logistics. The user carries out the price checking and ordering through terminal app, and website staff gets the clothing from the door, concentrates on sending into the clothing loading and protects the mill, builds the label system to the clothing in the mill, realizes tracking and tracing all the whole flow of washing article, and the user can know the progress of washing service in real time, and the mill washes and protects the back and concentrates the delivery to the user in hand to the clothing. The intelligent washing and protecting service in scale realizes that the client directly connects the factory, reduces intermediate links, quickly responds to the client demand, adopts advanced washing equipment, environment-friendly green detergent, sewage centralized treatment and washing quality centralized control, and ensures the washing and protecting quality.
At present, the Internet of things + technology and a distribution system in the large-scale intelligent washing and caring service are relatively perfect, but a production system of a large-scale intelligent washing and caring factory is not perfect, and particularly, a system with daily treatment capacity reaching 1 ten thousand pieces does not exist in China. The workflow of a typical order for clothes to be shipped to a care facility is as follows, except that a small portion of luxury goods are shipped to a special wash cycle: firstly, unpacking and sorting all orders, carrying out manual clothes initial inspection, and washing and classifying; then, the clothes are washed, and after the washing is finished, the clothes are aired, dried and disinfected; then, manually checking the washing effect, wherein qualified clothes enter an ironing link through a spiral conveying line, and unqualified clothes are subjected to secondary re-washing; after ironing is finished, the clothes are rechecked, qualified people can enter a packaging link, and unqualified clothes are rechecked; after the packaging is finished, entering an order sorting conveying line, and sorting to a user; and the staff collects the completed orders and transfers the orders to the shipment logistics system after confirmation. In a large-scale washing and caring factory, due to the fact that orders are large in quantity and various in types of clothes, even if the same order is divided into different types of clothes, the washing time of the factory is different, and the clothes can be delivered only after all the clothes of the same order are washed.
The clothing is washed in scale and is protected mill from unpacking, inspection, washing to letter sorting station, mainly adopts chain transport suspension system, and ordinary chain transfer chain is short then tens meters, and long then hundreds of meters, and the clothing not only accomplishes the transportation of position on chain transfer system, and more importantly is the completion letter sorting work. After various clothes, different styles and different types of clothes are washed and protected in a factory, the clothes are sorted according to orders (customers), and for tens of thousands of clothes, the clothes are sorted manually, so that the efficiency is low, and the clothes are easily sorted by mistake. The general large-scale washing and protecting factory sorts clothes, and mainly carries out on-line sorting in the moving process of a chain conveying line. At present, most of clothes sorting systems adopt photoelectric coding sensing, a plurality of three-phase asynchronous alternating-current motors (the number is more than 10) + a chain conveying system, each motor is provided with a photoelectric encoder to count the number of revolutions of the motor, the system has a plurality of counting results, meanwhile, the tightness degree of the chain conveying system is different, and further, the system is complicated in software and hardware, high in cost and relatively low in sorting accuracy. The invention provides a clothes sorting system based on subdivision chain pitches, which does not depend on a photoelectric coding system, and has the advantages of low hardware cost, simple algorithm, good anti-interference performance and very high sorting accuracy.
Disclosure of Invention
In order to overcome the defects of the prior art, the clothes sorting system provided by the invention has the advantages that the sorting method is novel in conception, the hardware mechanism is simple, the defects of the prior art are overcome, and the system has certain universality aiming at the long-distance chain conveying sorting system.
The invention adopts the following technical scheme:
the intelligent clothes sorting system comprises a long-distance chain conveying line, a pitch subdivision and pitch counting positioning sensing system and a clothes sorting information acquisition system, wherein the long-distance chain conveying line comprises a chain device, a three-phase asynchronous motor and a cylinder, clothes hooks are arranged on the chain device at equal distances, the three-phase asynchronous motor for driving the chain to move and a sorting station adopting a cylinder sorting mode are arranged at the turning part of the chain device respectively, and a set of pitch subdivision and pitch counting positioning sensing system and a clothes sorting information acquisition system are arranged at the inlet of the chain conveying line.
Furthermore, the pitch subdivision and pitch counting positioning sensing system comprises a plurality of optical fiber sensors and 1 photoelectric sensor which is opposite to each other, and the clothes sorting information acquisition system comprises a clothes sorting information identification device.
Preferably, the clothes sorting information identification device adopts a wireless identification device; such as a bar code reader, a two-dimensional code reader, or an RFID wireless reading device, etc.
Still further, 3 vertically arranged RFID wireless reading devices, 6 high-precision optical fiber correlation sensors and 1 correlation photoelectric sensor are arranged at the inlet of the chain conveying line, and the 3 vertically arranged RFID wireless reading devices are used for meeting the requirements of clothes with different lengths; 6 optical fiber correlation sensor equidistant evenly arranges, and the interval sets up to 50mm, and in the chain transmission motion process, "lug" of chain top has carried out 6 subdivisions through 6 optical fiber sensor in proper order, utilizes the feedback signal of sensor, to the chain original pitch, and the pitch after the subdivision is 50mm, and the pitch after the subdivision is less than letter sorting station interval, can regard as chain transmission distance's count foundation.
Furthermore, when the clothes to be sorted with the RFID chips pass through the 3 RFID antennas, the clothes sorting information is read by an upper computer, the upper computer sends the information to the embedded control system in a bus mode, the embedded control system lists the clothes in a sorting queue, the subdivided pitch counting is started by simultaneously triggering the photoelectric sensor and the 1 st optical fiber sensor, and the position is unique, so that the accurate initial zero position of each piece of clothes is guaranteed, and the sorting accuracy is further guaranteed; when the pitch count matches the distance of the target station, the controller controls the sorting cylinder to extend out, and the clothes are sorted to the corresponding station.
The invention has the following beneficial effects: 1. the chain conveying distance can be accurately calculated by subdividing the chain pitch and positioning and counting the subdivided pitch without a complex photoelectric coding counting system, and the chain conveying distance is simple in structure and convenient to calculate; 2. the whole system has strong anti-interference performance and accurate sorting; 3. the chain conveying and sorting system has very good universality.
Drawings
Fig. 1 is a top plan view of a long chain clothing conveyor line.
Fig. 2 is a front view of a chain segment.
Fig. 3 is a schematic view of the laundry information reading, chain pitch subdivision and positioning sensing device.
Wherein: the system comprises a conveying chain 1, a three-phase asynchronous motor 2, a sorting station 3, a pitch subdivision and pitch counting positioning sensing system 4, a clothes sorting information acquisition system 5, lugs on the chain 6, a clothes hook 7, an RFID wireless reading device 8, a high-precision optical fiber correlation sensor and a 9-correlation photoelectric sensor.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Referring to fig. 1 to 3, the intelligent clothes sorting system comprises a long-distance chain conveying line, a pitch subdivision and pitch counting positioning sensing system and a clothes sorting information acquisition system, wherein the long-distance chain conveying line comprises a chain device, a three-phase asynchronous motor and a cylinder, clothes hooks are arranged on the chain device at equal distances, the three-phase asynchronous motor for driving the chain to move and a sorting station adopting a cylinder sorting mode are respectively arranged at the turning positions of the chain device, and a set of pitch subdivision and pitch counting positioning sensing system and a clothes sorting information acquisition system are arranged at the inlet of the chain conveying line.
Furthermore, the pitch subdivision and pitch counting positioning sensing system comprises a plurality of optical fiber sensors and 1 photoelectric sensor which is opposite to each other, and the clothes sorting information acquisition system comprises a clothes sorting information identification device.
Preferably, the clothes sorting information identification device adopts a wireless identification device; such as a bar code reader, a two-dimensional code reader, or an RFID wireless reading device, etc.
Referring to fig. 1, in order to save floor space, a long-distance clothes conveying line is arranged in a snake shape, and the conveying line comprises a transmission chain 1, a three-phase asynchronous motor 2 for driving the chain to move is arranged at 6 turning positions respectively, a plurality of sorting stations 3 adopting a cylinder sorting mode and a conveying line inlet, and a set of clothes information reading, chain pitch subdivision and positioning sensing device 4 is arranged at the conveying line inlet.
Referring to fig. 2, a section of the chain conveyor line is taken, the chain has an original pitch of 300mm, there is a "lug" 5 every 300mm, and a clothes hook 6 is provided every 3 original pitches.
Referring to fig. 3, the chain original pitch is 300mm, in order to arrange sorting stations as many as possible in a limited space, considering the width of the clothes, the distance between two adjacent sorting stations is generally set to be 600mm, obviously, the original pitch is used as the distance counting basis, which cannot meet the accurate sorting requirement of the system, and therefore, the pitch needs to be subdivided. The clothes information reading, chain pitch subdividing and positioning sensing device is arranged at the entrance of the conveying chain and comprises 3 vertically arranged RFID wireless reading devices 7, 6 high-precision optical fiber correlation sensors 8 and 1 correlation photoelectric sensor 9. 3 RFID wireless reading devices are vertically arranged, the whole vertical direction can be covered, the RFID chips are hung on clothes mainly for meeting the requirements of clothes with different lengths, and the upper and lower positions of the clothes are possible. 6 optical fiber correlation sensors are evenly arranged at equal intervals, the interval is set to be 50mm, in the process of chain transmission movement, lugs above the chain sequentially pass through the 6 optical fiber sensors, the feedback signals of the sensors are utilized to subdivide the original pitch of the chain by 6, and the subdivided pitch is 50 mm. The subdivided pitch is far smaller than the sorting station pitch and can be used as the counting basis of the chain transmission distance.
The wireless information reading system belongs to inaccurate positioning sensing, and the RFID reading device can randomly identify and read the RFID information of the clothes in a specific range, so an accurate positioning mechanism needs to be established. The specific embodiment is as follows: when the clothes to be sorted with the RFID chips pass through the 3 RFID antennas, the clothes sorting information is read by an upper computer, the upper computer sends the information to the embedded control system in a bus mode, the embedded control system lists the clothes in a sorting queue, the subdivided pitch counting is started by simultaneously triggering the photoelectric sensor and the 1 st optical fiber sensor, and the position is unique, so that the starting zero position of each piece of clothes is guaranteed to be accurate, and the sorting accuracy is further guaranteed. When the pitch count matches the distance of the target station, the controller controls the sorting cylinder to extend out, and the clothes are sorted to the corresponding station.
The invention adopts the optical fiber sensor to subdivide the original pitch of the chain, and the subdivided pitch is far smaller than the spacing of sorting stations and can be used as the counting basis of the transmission distance of a transmission line. The intelligent clothes sorting system provided by the invention has the advantages of low hardware cost, simple algorithm and higher implementation value.

Claims (6)

1. The intelligent clothes sorting system is characterized by comprising a long-distance chain conveying line, a pitch subdivision and pitch counting positioning sensing system and a clothes sorting information acquisition system, wherein the long-distance chain conveying line comprises a chain device, a three-phase asynchronous motor and a cylinder, a clothes hook is arranged on the chain device at equal distance, a turning part of the chain device is respectively provided with the three-phase asynchronous motor for driving the chain to move and a sorting station adopting a cylinder sorting mode, and a set of pitch subdivision and pitch counting positioning sensing system and a clothes sorting information acquisition system are arranged at the inlet of the chain conveying line.
2. The intelligent clothing sorting system of claim 1, wherein the pitch subdivision and pitch count position sensing system comprises a plurality of fiber optic sensors and 1 opposed photoelectric sensor.
3. The intelligent clothing sorting system according to claim 1 or 2, wherein the clothing sorting information acquiring system comprises clothing sorting information identifying means.
4. The intelligent clothing sorting system according to claim 3, wherein the clothing sorting information recognition device is a wireless recognition device, including a bar code reader, a two-dimensional code reader or an RFID wireless reading device.
5. The intelligent clothes sorting system according to claim 4, wherein 3 vertically arranged RFID wireless reading devices, 6 high-precision optical fiber correlation sensors and 1 correlation photoelectric sensor are arranged at the entrance of the chain conveying line, and the 3 vertically arranged RFID wireless reading devices are used for accommodating clothes with different lengths; 6 optical fiber correlation sensor equidistant evenly arranges, and the interval sets up to 50mm, and in the chain transmission motion process, "lug" of chain top has carried out 6 subdivisions through 6 optical fiber sensor in proper order, utilizes the feedback signal of sensor, to the chain original pitch, and the pitch after the subdivision is 50mm, and the pitch after the subdivision is less than letter sorting station interval, can regard as chain transmission distance's count foundation.
6. The intelligent clothing sorting system according to claim 4, wherein the clothing to be sorted with the RFID chip hung thereon is read by the upper computer when passing through the 3 RFID antennas, the upper computer sends the information to the embedded control system in a bus manner, the embedded system arranges the clothing in a sorting queue, and the subdivided pitch counting is started from the simultaneous triggering of the photoelectric sensor and the 1 st optical fiber sensor, and the position is unique, so that the initial zero position of each piece of clothing sorting is ensured to be accurate, and further the sorting accuracy is ensured; when the pitch count matches the distance of the target station, the controller controls the sorting cylinder to extend out, and the clothes are sorted to the corresponding station.
CN202110244071.6A 2021-03-05 2021-03-05 Intelligent clothes sorting system Active CN113102279B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110244071.6A CN113102279B (en) 2021-03-05 2021-03-05 Intelligent clothes sorting system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110244071.6A CN113102279B (en) 2021-03-05 2021-03-05 Intelligent clothes sorting system

Publications (2)

Publication Number Publication Date
CN113102279A true CN113102279A (en) 2021-07-13
CN113102279B CN113102279B (en) 2022-06-17

Family

ID=76710457

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110244071.6A Active CN113102279B (en) 2021-03-05 2021-03-05 Intelligent clothes sorting system

Country Status (1)

Country Link
CN (1) CN113102279B (en)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040024730A1 (en) * 2002-08-02 2004-02-05 Brown Thomas M. Inventory management of products
CN201984514U (en) * 2010-12-28 2011-09-21 上海飞羽包装机械有限公司 Optical fiber counting device
CN202103119U (en) * 2010-12-27 2012-01-04 赵波 Plate collecting machine with automatic counting function used for battery plate coating line
CN103136579A (en) * 2011-11-28 2013-06-05 天津普林电路股份有限公司 Automatic counting plate collecting machine for production of high-density interconnection circuit board
CN206395009U (en) * 2017-01-11 2017-08-11 佛山森洋自动化包装设备有限公司 Count blanking device
CN109119597A (en) * 2018-09-04 2019-01-01 超威电源有限公司 Coated plate programming count and method for sorting based on power lead acid battery coated plate film-taking in means
CN109649931A (en) * 2019-02-14 2019-04-19 江苏贺鸿电子有限公司 A kind of automatic identification counting apparatus
CN208932429U (en) * 2018-09-04 2019-06-04 超威电源有限公司 Power lead acid battery coated plate film-taking in means
CA3127728A1 (en) * 2019-01-25 2020-07-30 Walmart Apollo, Llc Conveyor systems and methods for sorting merchandise using interchangeable and assignable sortation modules

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040024730A1 (en) * 2002-08-02 2004-02-05 Brown Thomas M. Inventory management of products
CN202103119U (en) * 2010-12-27 2012-01-04 赵波 Plate collecting machine with automatic counting function used for battery plate coating line
CN201984514U (en) * 2010-12-28 2011-09-21 上海飞羽包装机械有限公司 Optical fiber counting device
CN103136579A (en) * 2011-11-28 2013-06-05 天津普林电路股份有限公司 Automatic counting plate collecting machine for production of high-density interconnection circuit board
CN206395009U (en) * 2017-01-11 2017-08-11 佛山森洋自动化包装设备有限公司 Count blanking device
CN109119597A (en) * 2018-09-04 2019-01-01 超威电源有限公司 Coated plate programming count and method for sorting based on power lead acid battery coated plate film-taking in means
CN208932429U (en) * 2018-09-04 2019-06-04 超威电源有限公司 Power lead acid battery coated plate film-taking in means
CA3127728A1 (en) * 2019-01-25 2020-07-30 Walmart Apollo, Llc Conveyor systems and methods for sorting merchandise using interchangeable and assignable sortation modules
CN109649931A (en) * 2019-02-14 2019-04-19 江苏贺鸿电子有限公司 A kind of automatic identification counting apparatus

Also Published As

Publication number Publication date
CN113102279B (en) 2022-06-17

Similar Documents

Publication Publication Date Title
CN107185840B (en) Small automatic express parcel sorting machine and sorting method thereof
CN102176145B (en) Radio frequency identification (RFID) intelligent clothes hanger entrance and exit control method for intelligent clothing production hanging equipment control system
CN105388860B (en) A kind of intelligent manufacturing system of multiple-unit containing robot based on smart-RFID labels
CN205217388U (en) Automatic sorting device based on bar code and radio frequency identification electronic tags
CN102873033B (en) Tire classification warehouse-in Automated Sorting System
TWI663559B (en) Storage and transportation system for automatic storage and positioning control method thereof
CN112938292B (en) Intelligent warehousing device, system and decision-making assisting method
CN112249573B (en) System and method for classified and centralized warehousing and storing of products with multiple specifications
Akbari et al. Comparison of RFID system and barcode reader for manufacturing processes
CN112784938B (en) Intelligent counting method for industrial big data-oriented process batch output
CN113102279B (en) Intelligent clothes sorting system
KR20100041177A (en) The automatic physical distribution system and control method
CN107030015A (en) One kind scanning sorting system
CN208627860U (en) Materials-sorting system
CN204203980U (en) A kind of electrical measuring device bar code information comparison equipment
CN103714361A (en) Tunnel-type article identification system
CN108480220A (en) A kind of materials-sorting system
CN104076768A (en) Method for electric energy consumption acquisition and energy conservation control in order executing process
CN110068788A (en) The flexible intelligent calibrating installation and method of compatible a variety of electric energy meter calibrations
CN114690111A (en) Online quality check backflow self-checking method for three-phase electric energy meter
CN101598675A (en) The mutual information method of identification of cotton foreign fiber
US20230173544A1 (en) Data collection method, data collection system, and computer readable medium
CN203786133U (en) Automatic transmission system for sample inspection
CN210279881U (en) Guiding mechanism for clothing sorting system
CN208098629U (en) A kind of jacking weighing sorting system for material flows automation production line

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant