CN102810197A - Method and system for traceability and safety early warning of aquatic products based on Internet of Things - Google Patents

Abstract

The invention discloses an aquatic product source and security early warning method and an aquatic product source and security early warning system based on the internet of things, and belongs to the digital category of healthy aquaculture. According to the aquatic product source and security early warning method and the aquatic product source and security early warning system based on the internet of things, the information in the aquaculture process, the aquaculture environment and the transport and sales processes is recorded by employing a core technology of the internet of things, namely the radio frequency identification (RFID) technology, an identifier based on EAN/UCC is used in the electronic product code (EPC) design of an RFID electronic tag, and individual identification of each water body and captured aquatic product is realized, so that each water body and aquatic product have the unique identity authentication. By adoption of the technical scheme, an overall management tracing system of the aquatic products from the pond to the dining table is established, so that breeding and transporting process of the aquatic products is completely transparent, the management level of each related enterprise can be effectively improved, the government supervision is enhanced, the safety and quality of the aquatic products are improved, and the aquatic products are trustingly purchased and eaten by customers.

Description

Method and system for traceability and safety early warning of aquatic products based on Internet of Things

technical field

The present invention is an aquatic product traceability and safety early warning method and system based on the Internet of Things, and belongs to the digital category of aquatic healthy breeding. the

Background technique

my country is the world's largest aquaculture country, and its aquaculture production accounts for 64% of the total aquatic product output and 70% of the world's aquaculture production. However, at present, my country's aquaculture industry is facing many challenges: pollution of the water environment, drug abuse in the breeding process, and insufficient quality and safety of aquatic products. important factor. In the aquaculture industry, some unscrupulous aquatic producers use prohibited additives from time to time, and the residues of drugs abused in the breeding process often exceed the standard seriously, and their products enter the consumer market, seriously affecting the health of consumers. the

At the same time, with the improvement of people's living standards and the strengthening of nutrition and safety awareness, the demand for aquaculture products is increasing day by day, and the safety of aquatic products has been more and more concerned and valued by people. Therefore, it is a good solution to make the breeding and growth process of aquatic products traceable and fully transparent to consumers. Realize the whole information traceability of aquatic products from "pond to dining table", eliminate unsafe factors from the source, so as to ensure the quality and safety of aquatic products, and at the same time, consumers can rest assured to buy and eat, achieving a win-win situation. the

The Internet of things (The Internet of things) is defined as: through radio frequency identification (RFID), infrared sensors, global positioning systems, laser scanners and other information sensing equipment, according to the agreed agreement, any item is connected to the Internet, A network for information exchange and communication to realize intelligent identification, positioning, tracking, monitoring and management. Therefore, an Internet of Things can be subdivided into four links: identification, perception, processing, and information transmission. The key technologies of each link are RFID radio frequency devices, sensors, smart chips, and wireless transmission networks of telecom operators. At present, the Internet of Things has a wide range of uses, covering intelligent transportation, environmental protection, government work, intelligent fire protection, industrial monitoring, food traceability and other fields. the

The key to the establishment of the traceability system of aquaculture products is the design and realization of individual identification. How to select individual identification equipment and realize the unified numbering of aquatic products from seedling cultivation to stocking, from feed feeding to disease control, and from fishing to sales is the key. the

The present invention uses the RFID technology in the Internet of Things technology to build a traceability and safety system for aquatic products, and designs the RFID code in the RFID technology, so that each seedling has a unique individual identification just after birth, and then the EPC code is generated. The hexadecimal traceability barcode can trace the whole process of aquatic products. the

Contents of the invention

The invention is a method and system for traceability and safety early warning of aquatic products based on Internet of Things technology. The present invention uses RFID technology to collect and record the information of the breeding link and the transportation and sales link, adopts an RFID encoding method based on EAN/UCC to first encode the breeding water body, and then make a waterproof RFID electronic label after the encoding is completed Put it into the aquaculture water body to monitor the changes in its aquaculture environment at all times; then use the same coding method to code the fished aquatic products, and make the electronic tags after coding into an appropriate form according to the specific situation. Monitor the situation during its shipping sale. After reaching the hands of consumers, consumers can query the whole process of breeding corresponding aquatic products according to the code, that is, the traceability code, including breeding environment data, feed feeding, drug use, transportation and other information. the

In order to solve the problems of the technologies described above, the method of the present invention comprises the steps:

A. Use RFID technology to record all breeding information of aquatic products;

B. Upload relevant data of aquaculture products to the database server;

C. Use the aquatic product safety early warning system to control the breeding environment of aquatic products through the control device;

D, affix the RFID label that has used the coding method in the present invention for the aquatic product that fishes out according to the situation;

E. Consumers use the EPC code in the RFID tag to trace through the aquatic product traceability system, and check the breeding environment, the whole process of breeding and the process of transportation and sales of the purchased aquatic products;

Among them, the steps described in step A also include the following detailed steps:

A1. Arrange sensor nodes in the breeding environment, including temperature sensor nodes, dissolved oxygen sensor nodes, pH sensor nodes, ammonia nitrogen content sensor nodes and fluctuation force sensor nodes, and use these sensors to obtain the temperature, dissolved oxygen concentration, and pH of the aquatic product breeding environment Data information such as value, ammonia nitrogen content and fluctuation intensity;

A2. Through the design of RFID coding, design an RFID waterproof electronic tag with EPC code for each aquaculture water body, and record the common information of the same aquaculture water body, such as the temperature of the water body, dissolved oxygen concentration, PH value, Ammonia nitrogen content and fluctuation intensity, as well as feeding feed and drug use data in the breeding process, as well as other relevant data such as quarantine inspection data;

Among them, the RFID coding design process involved in step A2 is as follows:

A2-1, EAN/UCC-13 barcode standard design

The key lies in the determination of the commodity identification code. The commodity identification code adopts the internationally accepted EAN-13 barcode encoding method. The EAN-13 barcode is composed of country code, manufacturer code, product code and check digit, and the country code is composed of 3 digits. , is the code assigned to the country by EAN, which represents the country to which the product manufacturer belongs. The next four digits represent the code of the product manufacturer, which is approved and registered by the National Article Numbering Center. The next five digits are the product code, this part is compiled by the enterprise itself, and the check code is used to check whether the result of the bar reader is correct;

A2-2. Barcode coding design for aquaculture water body

According to the EAN/UCC-13 barcode structure, code the part of the product code that can be compiled by itself, and this part is coded according to the number of the farm;

A2-3. Standard design of SGTIN-96 code based on EAN/UCC

The SGTIN-96 code adopts binary code, which corresponds to the commonly used EAN13 barcode. It is composed of header, filter value, partition value, manufacturer identification code, product code and serial code. The 1 to 8 digits are the header, which uniquely determines SGTIN-96 The header of the . The distribution status of manufacturer identification code and product code, 15-58 digits are manufacturer identification code + product code, and the following 59-96 digits are serial codes, which are unique identifiers assigned to each product by the manufacturer. the

A2-4, RFID coding of electronic tags

According to the relationship between the barcode and the EPC code, the determined aquaculture water body barcode is converted into an EPC code, wherein the 38-bit sequence code part is the unique identifier assigned to the aquaculture water body in each area by the aquaculture enterprise. The category, variety and water body sequence of the product are coded. The category and variety each occupy 4 digits, and the remaining 30 digits are the sequence number of the water body, so that each aquaculture water body has its own unique identification code. the

Among them, the data uploaded to the database server involved in step B includes:

B1. The temperature, dissolved oxygen concentration, pH value, ammonia nitrogen content and fluctuation intensity information of the breeding environment obtained by sensor nodes;

B2. Data on artificial feed and use of medicines during the breeding process;

Wherein, the steps involved in step C include the following processes:

C1. Comparative analysis of the acquired environmental data information of the aquaculture water body and the standard aquaculture environment in the safety warning;

C2. Once the set dangerous critical value is reached, an early warning will be issued and corresponding countermeasures will be indicated;

C3. Use the on-site monitoring computer to automatically control the control device. For example, once the temperature is lower than a certain value or higher than a certain value, an early warning will be issued and the control device will be automatically called to release warm water to the water body;

Among them, the labeling according to the situation mentioned in step D includes two situations: one is aquatic products like shrimp, which are affixed with RFID tags in batches, and the other is aquatic products similar to crabs, which are then RFID tags can be attached to each one; the RFID coding design process involved is as follows:

D1. Aquatic product barcode design

According to the EAN/UCC-13 barcode structure, the product code part is coded from the category, type, variety and packaging type of aquatic products;

D2. RFID coding design for aquatic products

According to the relationship between the barcode and the EPC code, the determined barcode of the aquatic product is converted into an EPC code. The serial code part is the unique identifier assigned to each product by the manufacturer. Here, the serial number is set for the aquatic product in terms of fishing date and order , the fishing date occupies 6 digits, and the remaining 32 digits are numbered according to the order of aquatic products. If the compiled 96-digit EPC code is converted into hexadecimal, it becomes 24 digits, so that there is a unique RFID code, and this code is also That is, the code used for retrospectively;

The above method is the guiding ideology. The present invention realizes the traceability and security system of aquaculture based on the Internet of Things, specifically including the following contents:

1. Aquatic product safety early warning system

2. Aquatic product traceability system

3. SMS traceability system based on GSM/GPRS

This invention mainly provides an electronic management system for aquaculture products for aquaculture enterprises, and also provides a traceability system for consumers to inquire about aquatic products. The aquatic product EPC code (that is, the individual identification of aquatic products) stored in the RFID electronic tag and the basic breeding information data, as well as various breeding environment data sensed by the sensor nodes in time, such as temperature, PH value, dissolved oxygen content, etc., are transmitted through radio frequency The communication technology is sent to the RFID reader. At the same time, when the aquatic product is in the process of transportation and sales, the GPS chip can obtain the coordinate information of the aquatic product through the satellite positioning function, and transmit it to the RFID reader through the serial port. The single-chip microcomputer summarizes the information, and transmits it to the GSM receiving device through the GSM chip, and then sends the information to a computer terminal in the Internet through the device, and the terminal performs comprehensive analysis on the obtained data. Breeding standards provide safety warning prompts, and automatically control and adjust the breeding environment, so that aquatic products can be safely farmed throughout the process, increasing the benefits of farming enterprises. the

Description of drawings

Figure 1 Architecture diagram of aquatic product traceability and safety early warning system based on Internet of Things. the

Fig. 2 Schematic diagram of the interaction between wireless sensor network nodes and RFID identifiers. the

Figure 3 Flowchart of the aquatic product traceability system. the

Figure 4 Functional block diagram of the aquatic product safety early warning system. the

Figure 5. Structural diagram of the control mechanism. the

Detailed ways

The present invention is an application system combining hardware and software. The hardware is mainly used to collect the core data required by the system, including the basic information data stored in the RFID electronic tag memory, the material environment data sensed by various sensors, and It is the information in the transportation and sales process obtained by using satellites and GPS chips. The information is transmitted to the GSM chip through radio frequency technology and serial port, and then transmitted to the database server in the Internet through the GSM receiving device. The obtained data is processed by the server. Comprehensive analysis, according to the breeding standards of aquatic products, safety warning prompts are given. the

Put a waterproof RFID electronic tag and an antenna in the aquaculture water body to realize the information transmission between the reader and the electronic tag, so as to achieve the purpose of reading and writing the electronic tag. The reader itself has information anti-collision function, so there is no need to worry about the interference of information between multiple tags. During the breeding process of aquatic products, the monitoring computer controls the reader to write some important information to the electronic tag in real time, such as: the source of the crab seedlings, the feed they are fed, whether they have been sick, and what drugs they have used, etc. . This information plays a very important role in ensuring food safety and fulfills the traceability requirements of aquatic products in the future. After the aquatic products are caught, RFID technology is applied to them again, and each or each batch of aquatic products is equipped with RFID electronic tags according to the situation, which is used to monitor the situation during the transportation and sales process. Due to the large capacity of the electronic tag, it is very convenient to use. the

An example is given here for the scheme of storing RFID codes stored in RFID tags placed in water bodies. Assuming that the manufacturer identification code that a certain breeding enterprise has applied for is 69265562, and the serial number of a certain breeding product is 15, a 13-digit barcode (6926556200159) is generated according to the verification code rules. Assume that the category of aquaculture product in a certain water body is crab, which is recorded as 3, and the species is Portunus, which is recorded as 2. The numbering sequence of the water body is 12345, so the serial code part is 3212345. According to the conversion rules of barcode and EPC code, the final generated binary number is: 0011 0000 0001 0010 0001 0000 0111 0100 0100 1101 0000 0000 0000 0011 1100 0000 0000 0000 0011 0001 0000 001 is converted to hexadecimal 1 for convenience : 301210744D0003C000310439. The encoding scheme is similar for post-harvest RFID tags. the

As Fig. 2, the interactive principle diagram of wireless sensor network node and RFID identifier of the present invention, it is made up of wireless sensor network node and RFID reader, wherein wireless sensor node comprises various sensors, a data processing unit is single-chip microcomputer, memory , Antenna, radio frequency module namely CC1100 and power supply unit five parts, RFID reader is composed of single chip microcomputer, radio frequency module CC1100, antenna, serial port interface module and power supply unit. the

The operation interaction process between these two components is as follows: temperature, dissolved oxygen content, pH value, ammonia nitrogen content and fluctuation strength sensors collect environmental information data of aquatic product farming, and these data are transmitted to the single-chip microcomputer through the serial port. The control module of this design The MSP430F2012, a new MCU with lower cost and higher performance in the MSP430 series, is selected. After the data is encoded by the MCU, it is transmitted to the memory through the serial port. The memory is connected to the wireless radio frequency module through the serial port, and the data is transmitted to the module. The chip is the latest CC1100 radio frequency chip launched by Chipcon. It is a wireless transmission chip especially suitable for UHF. It is small in size, low in power consumption, and has a data transmission rate of 1.2kb/s-500kb/s. 315, 433, 868 and 915MHz. This design uses 915MHz as the center frequency. These sensing and attribute data are transmitted to the antenna of the RFID reader through the antenna. The antenna used in the RF card here is designed using a triangular microstrip antenna model. The maximum field strength direction is 0.125. The identifier antenna uses a 915MHz resonant frequency linearly polarized antenna. The radiation power of the antenna is about 1W. The RFID identifier CC1100 transmits the acquired data to the single-chip microcomputer MSP430F2012 through the serial port. Coding and processing are carried out, and two-way interaction with an external computer is realized through the RS232 serial port. The power supply unit of the wireless sensor network node and the RFID reader is a 7000mAH lithium battery. the

As shown in Figure 1, after the introduction of Figure 2, the control module of the sensor node and RFID reader uses MSP430F2012 single-chip microcomputer to process data, and the data transmission module uses CC1100 radio frequency chip and antenna for data wireless communication, through the connection between sensor node and RFID electronic tag Acquisition and processing, the basic information data of aquatic products and the sensing information of the breeding environment are stored in the RFID reader. In the process of transportation and sales of aquatic products after fishing, the GPS chip can obtain the coordinate information of aquatic products according to the positioning function of the satellite. , what the present invention adopts is the GPS module of Ublox, because the advantage of module is that it is convenient to obtain the information that it receives directly from serial port, also is convenient to carry out integration with wireless communication module GSM chip, and the coordinate information of these aquatic products is also delivered to RFID through serial port In the MSP430F2012 single-chip microcomputer of the reader, the single-chip microcomputer encodes and processes all information, and then transmits it to the GSM chip. The GSM chip of the present invention adopts Huawei's GTM900, and the GSM chip transmits these information to a SIM card equipped with a wireless network. The GSM receiving device of the card, which transmits information to the database server in the Internet through the GSM wireless network, and the terminal analyzes and evaluates the information in order to assist in the early warning of the entire breeding process and transportation and sales process of aquatic products. the

As shown in Fig. 3, the flow chart of the aquatic product traceability system of the present invention. The system analyzes the process from stocking, feeding, disease prevention, harvesting, and transportation of aquatic products in aquaculture enterprises, and designs functional modules such as aquaculture production environment, production activities, quality and safety management, and sales status to meet the needs of daily management of aquaculture enterprises. need. By combining the EPC code in the worn RFID electronic tag, the communication module is developed to realize the traceability of SMS based on the GSM/SMS/GPRS network. the

Figure 4 is a functional block diagram of the aquatic product safety early warning system of the present invention. The system consists of four modules, which are information collection module, information storage module, information display module and quality and safety early warning module. the

The information collection module includes the coordinated interaction of GPS chips and satellites to obtain the coordinate information during the transportation and sales of aquatic products, which is only used in the circulation process. Before fishing, that is, during the breeding process, various sensors perceive the breeding environment data of aquatic products, as well as the basic data entered during the breeding process stored in RFID electronic tags, and these data are transmitted to the managed host through the Internet. The information storage module mainly uses the Hibernate framework to store the basic information of aquatic products and the data of the breeding environment in the database, so as to provide data support for the subsequent safety warning. The information display module displays all the information in the monitoring process. The quality and safety early warning module mainly conducts a comprehensive analysis and evaluation of the transmitted data. Here, it mainly compares and analyzes all the obtained data with the standard breeding data. When a certain item does not match, it provides a safety warning and provides The corresponding solution is similar to an expert system. the

Fig. 5 is a structural diagram of the control mechanism of the present invention. According to the decision-making provided in the safety early warning system, use the control mechanism to adjust the breeding environment to make it within the range of safe breeding environment. The key in this mechanism is the executive mechanism, which includes: the heat pump solenoid valve at the bottom of the pool for regulating the water temperature of the breeding environment and the solenoid valve of the relevant water delivery pipe, the aerator, the motor, the submersible pump, etc. for regulating the dissolved oxygen content of the water. the

To sum up, the present invention collects and transmits all the information of aquatic products, including various sensor-perceived environmental data of aquaculture and RFID The information and data recorded at any time stored in the electronic tag are sent to the database server, and the whole process of breeding, transportation and sales information of aquatic products can be queried at any time through the aquatic product traceability system, and all collected data can be displayed and comprehensively analyzed in real time through the quality and safety early warning system. By comparing and matching with the standard breeding environment and feeding feed data, the breeding environment and feed feeding of aquatic products are monitored at all times and early warning decisions are made. At the same time, the control device is used to automatically control the breeding environment to ensure aquatic products. healthy growth and improve the efficiency of farming enterprises. At least include the following advantages:

1. Temperature, dissolved oxygen content, pH value, ammonia nitrogen content and fluctuation force sensors can sense the environmental factors of aquaculture in a timely, stable and low energy consumption;

2. The wireless radio frequency module CC1100 has stable performance and low energy consumption, and can efficiently sense information;

3. The single-chip microcomputer MSP430F2012 in RFID electronic tags and RFID readers has the functions of low cost, low power consumption, efficient encoding of various data, and stable performance;

4. The traceability system of aquatic products can allow consumers to query the whole process of purchasing aquatic products according to the traceability code, realizing the complete transparency of aquatic product cultivation and reassuring consumers;

5. The early warning system for aquatic product quality and safety can comprehensively and quickly process and analyze various information, and help aquaculture enterprises make decisions. At the same time, it can also issue early warning information without obstacles, and automatically call the control system for control. the

Claims (2)

1. A method for traceability and safety warning of aquatic products based on the Internet of Things, characterized in that it comprises the following steps: A. Use RFID technology to record all the breeding information of aquatic products; B. Upload relevant data of aquaculture products to the database server; C. Use the aquatic product safety early warning system to control the breeding environment of aquatic products through the control device; D. Paste RFID tags on the fished aquatic products according to the situation; E. Consumers use the EPC code in the RFID tag to trace through the aquatic product traceability system, and check the breeding environment, the whole process of breeding and the process of transportation and sales of the purchased aquatic products; Wherein, described in step A also includes the following detailed steps: A1. Arrange sensor nodes in the breeding environment, including temperature sensor nodes, dissolved oxygen sensor nodes, pH sensor nodes, ammonia nitrogen content sensor nodes and fluctuation force sensor nodes, and use these sensors to obtain the temperature, dissolved oxygen concentration, and pH of the aquatic product breeding environment Data information such as value, ammonia nitrogen content and fluctuation intensity; A2. Through the design of RFID coding, design an RFID waterproof electronic tag with EPC code for each aquaculture water body, and record the common information of the same aquaculture water body, such as the temperature of the water body, dissolved oxygen concentration, PH value, Ammonia nitrogen content and fluctuation intensity, as well as feeding feed and drug use data in the breeding process, as well as other relevant data information such as quarantine inspection data; Among them, the RFID coding design process involved in step A2 is as follows: A2-1, EAN/UCC-13 barcode standard design The key lies in the determination of the commodity identification code. The commodity identification code adopts the internationally accepted EAN-13 barcode encoding method. The EAN-13 barcode is composed of country code, manufacturer code, product code and check digit, and the country code is composed of 3 digits. , is the code assigned to the country by EAN, which represents the country to which the product manufacturer belongs. The next four digits represent the code of the product manufacturer, which is approved and registered by the National Article Numbering Center. The next five digits are the product The code, this part is prepared by the enterprise itself, and the check code is used to check whether the result of the bar reader is correct; A2-2. Barcode coding design for aquaculture water body According to the EAN/UCC-13 barcode structure, code the part of the product code that can be compiled by itself, and this part is coded according to the number of the farm; A2-3. Standard design of SGTIN-96 code based on EAN/UCC The SGTIN-96 code adopts binary code, which corresponds to the commonly used EAN13 barcode. It is composed of header, filter value, partition value, manufacturer identification code, product code and serial code. The 1 to 8 digits are the header, which uniquely determines SGTIN-96 The header of the . The distribution status of the manufacturer's identification code and product code, the 15th to 58th digits are the manufacturer's identification code + product code, and the subsequent 59th to 96th digits are the serial code, which is the unique identifier assigned to each product by the manufacturer; A2-4, RFID encoding of electronic tags According to the relationship between the barcode and the EPC code, the determined aquaculture water body barcode is converted into an EPC code, wherein the 38-bit sequence code part is the unique identifier assigned to the aquaculture water body in each area by the aquaculture enterprise. The category, variety and water body sequence of the product are coded. The category and variety each occupy 4 digits, and the remaining 30 digits are the sequence number of the water body, so that each aquaculture water body has its own unique identification code; Wherein, the data uploaded to the database server involved in step B includes: B1. The temperature, dissolved oxygen concentration, pH value, ammonia nitrogen content and fluctuation intensity information of the breeding environment obtained by sensor nodes; B2. Data on artificial feed and use of medicines during the breeding process; Wherein, the steps involved in step C include the following processes: C1. Comparative analysis of the acquired environmental data information of the aquaculture water body and the standard aquaculture environment in the safety warning; C2. Once the set dangerous critical value is reached, an early warning will be issued and corresponding countermeasures will be indicated; C3. Use the on-site monitoring computer to automatically control the control device. For example, once the temperature is lower than a certain value or higher than a certain value, an early warning will be issued and the control device will be automatically called to release warm water to the water body; Among them, the labeling according to the situation mentioned in step D includes two situations: one is aquatic products like shrimp, which are affixed with RFID tags in batches, and the other is aquatic products similar to crabs. Then you can attach an RFID tag to each one; the RFID coding design process involved is as follows: D1. Barcode coding design for aquatic products According to the EAN/UCC-13 barcode structure, the product code part is coded from the category, type, variety and packaging type of aquatic products; D2. RFID coding design for aquatic products According to the relationship between the barcode and the EPC code, the determined barcode of the aquatic product is converted into an EPC code. The serial code part is the unique identifier assigned to each product by the manufacturer. Here, the serial number is set for the aquatic product in terms of fishing date and order , the fishing date occupies 6 digits, and the remaining digits are numbered according to the order of aquatic products. If the compiled 96-digit EPC code is converted into hexadecimal, it becomes 24 digits, so that there is a unique RFID code, and this code is also That is, the code used for tracing later. 2. A system for realizing claim 1, characterized in that it comprises the following: The system is based on Eclipse and adopts Java language to realize a three-tier architecture system. The display layer is placed in the jsp page, and the database operation and logic layer are implemented by components. accomplish: (1)BusinessRules: rule layer, which mainly stores some common rule classes; (2) Common: data entity class, which corresponds to the database table one by one, and realizes the abstract data table structure through this class; (3) DataAccess: data access layer, one-to-one correspondence with data entities, a data access class corresponds to a data entity, through the control of data entity attributes to achieve data addition, update, deletion and retrieval; (4) Web: data representation layer, users can write data; (5) WinTest: used to test related methods when building the underlying structure; (6) SystcmFramwork: initialization of system parameters and processing of logs; The system also includes: The authority assignment module is used to assign authority to the user, so that the user can only log in with one role at the same time; The traceability module of the website allows users to directly log in to the query interface and enter the traceability code to display all the information of the corresponding aquatic products; The SMS traceability module includes a GSM/GPRS/SMS SMS platform based on the TC351 module to receive the traceability code sent by the user and complete the traceability of aquatic products.

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