CN101790250B - Socialized supervision and detection network system for food safety - Google Patents
Socialized supervision and detection network system for food safety Download PDFInfo
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- CN101790250B CN101790250B CN200910250113A CN200910250113A CN101790250B CN 101790250 B CN101790250 B CN 101790250B CN 200910250113 A CN200910250113 A CN 200910250113A CN 200910250113 A CN200910250113 A CN 200910250113A CN 101790250 B CN101790250 B CN 101790250B
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Abstract
The invention discloses a socialized supervision and detection network system for food safety, which comprises a first-level wireless sensor network, a second-level wireless sensor network, a third-level wireless sensor network, a three-level base station node, a monitoring network and a user terminal. The first-level wireless sensor network consists of sensor nodes distributed at the source of each food and RFID; the second-level wireless sensor network consists of sensor nodes distributed in a primary processing area for foods and on processing equipment, and RFID; the third-level wireless sensor network consists of sensor nodes distributed in a deep processing area for foods and on processing equipment, and RFID; the three-level base station node wirelessly communicates with the wireless sensor networks in each level respectively; the monitoring network facing the user terminal is formed by connecting the base station nodes in each level and a management control center server with a communication network; and the user terminal is composed of a communication terminal. Both the sensor nodes and a monitored object have uniqueness. The user terminal can monitor any part of the whole flow of the foods from the source to the market in real time in a mode of transmitting a query command.
Description
Technical field
The present invention relates to supervision, detect network system, particularly food safety supervision, detection network system.
Background technology
Food security be related to broad masses of the people healthy and life security, be related to agricultural product reputation and international image.Because poisonous and harmful substance residual quantity height, environment pollute the source of agricultural production and agricultural planting and aquaculture and increasingly sharpen in the food.Food-safety problem constantly takes place and the trend that grows in intensity is arranged in recent years, even has reached the vegetables expert and dare not eat vegetables, animal husbandman and dare not eat the state that meat, fisheries expert dare not be eaten fish.For example, " tonyred " incident, " clenbuterol hydrochloride " incident, " problem milk " incident and " how precious fish ", " Sanlu milk " incident or the like all valid certificates the importance of food-safety problem.Therefore, the safety problem of varieties of food items receives the great attention of society and government day by day, and food security has become the problem that the whole world can not be avoided.But food security relates to complexity, the global question in a plurality of fields such as agricultural, animal husbandry and commercial production, and it not only needs effective system and strict management, also needs effective, advanced modern technologies support.
Because it is too extensive that food-safety problem relates to the field, use the method for wireless sensor network to mainly contain following several types at present in food security and the directly related field:
(1) realizes type that certain the concrete link in aborning industry of food or the industry is monitored, detected based on RFID (electronic tag) or based on RFID and wireless sensor network technology.Like the article " Field Experiment of an E-xtendable Traceability System:Application to the Quality Control of Beef-Product Distribution " that Nobuo OKABE delivered on the International Conference on In-telligent Pervasive Computing in 2007, just utilize sensor network and RFID formerly to expect that the traceed back system of sale studies by raising to beef; The food of BeiJing, China's Olympic Games in 2008 has also all adopted the system's correlation technique of can tracing back, and the production process of food is reviewed; The article " the RFID sensor network is in the research in food production field " that the Du Yudong of 2008 Beijing University of Science and Technology delivered on the 21st the 5th phase of volume of industrial control computer magazine; Then RFID and sensor node are used in combination; The environment of food production and the sanitary condition of facility are controlled and production equipment is controlled.
(2) utilizing certain transducer such as Fibre Optical Sensor or temperature, humidity etc. to constitute sensor network monitors some index that food produces in certain concrete link.Showed " Comparison of k-NN and n-eural network methods in the cl-assification of spectral data from an optical fibre-based sensor syste-m used for quality control in the food industry " respectively at 2005 in the 111-112 of SE-NSOR ACTUATORS B magazine curly hair like Hibernian E. Lew-is; The 1st phase delivered " Optical fib-re sensors for assessing food quality in full scale production ovens-a principal component analysis and artificial neural network bas-ed approach " at the 2nd volume of Nonlin-ear Analysis:Hybrid Systems magazine in 2008, delivered " Monitoring food quality using an optic-al fibre based sensor system-A comparison of Kohonen and back-propagation neural network classification techniques " in the 17th the 2nd phase of volume of Measurement Science and Technology magazine and deliver " Design of a s-ystem that uses optical-fiber sensors and neural networks to control in 2006 with rolling up on the 6th phase at the 5th of I-EEE Sensors Journal magazine in 2005
A large-scale industrial oven by monitoring the food quality online " just mainly studied the method for utilizing optical pickocff that the food color is controlled, thus accomplish in the industry control to relevant issues such as the food colour and the duration and degree of heating.Also have some documents that a certain specific targets in some link in the food generation are studied.Having introduced a kind of sensor node by several measurements sampling products and ambient temperature information like article " Architecture of automatic monitoring system for fresh food quality using wireles-s sensor network " forms and carries out message transmission through the 2.4G frequency. logical system; Then introduced the sensor network of the physical parameter of monitoring different farming regions in the article " Energy efficient routing algorithms for application to agro-food wireless sensor networks ", but it has mainly studied the routing issue in the field irrigation sensor network system; International monopoly " WO2008140212-A1 " " Ubiquitous sensor network-based system for automatically managing food sanitation; has manag-ement server analyzing/storing received data based on data-base, andoutputting analyzed/stored data when data is warning message " then mainly utilizes sensor network that sanitary ware and kitchen food are carried out the monitoring of hygiene; High wise the volume in the article of delivering on the 4th phase " towards the wireless sensor network system design of food security " at Chinese journal of scientific instrument the 29th of Dalian University of Technology proposed in 2008; If let the consumer fully visit the information of food, just can eliminate their misgivings for food security in processes such as production, transportation, storages.Only a kind of temperature acquisition system based on wireless sensor network is furtherd investigate based on this this article.
(3) only be to study to certain local link of food production." rural area agricultural sensor network design of Interaction " article of in IEMSs international conference in 2008, delivering like the people such as K.Walker of London University; Just introduce the author and in little home farm of Kenya, designed a sensor network; Be used for collecting the information of farm, two villages information; The article " Sensor Networks and the Food Industry Martin Connolly " that Ireland researcher delivers in REALWSN international conference in 2005 has then been studied sensor network and in preventing the food supply chain, has been polluted repeatedly problem institute ability role.
Along with the malignant event serious day by day, the food security field of international and domestic food safety problem is more and more; Personnel to existing problems in the whole flow process from the farmland to the retail in the food generation are studied are also more and more; And formed a food sensor network research group; This group is made up of the different piece representative from representative, sensor technology industry and the food industry of academia, can provide the expert to instruct (see for details the 5th phase of rolling up in 2004 the 85th on Process Engineering magazine, deliver article " Sensors sensibility [food sensor network] ") in technology and others to this directionality problem.Therefore, the existing correlative study content of analysis-by-synthesis finds that mainly there is the following points problem in existing food security intelligent monitor system.
(1) great majority research all only is to study to certain link or certain concrete monitoring index that food produces, studies for user's whole process as an indivisible system and have to be planted as food selling by plant.Because a kind of food may relate to the food chain of a complicacy, any one link of whole link goes wrong and all can cause the research influence to following process production.Therefore, be far from being enough only to certain link or certain specific targets research.For example; The milk powder of selling in the market; Will experience by forage growth, milk cow health situation, cowboying personnel or enterprise provide original milk to the dairy products plant, undertaken by the dairy products plant in these processes such as production and processing and sale; If cowboying personnel or enterprise offer the original milk of dairy products plant very serious quality problems are arranged, all can there be quality problems in the dairy produce that is obtained by this milk processing so.Thereby it is not enough at this moment only monitoring the dairy products plant.
(2) in the monitoring application based on RFID and sensor network, much all be that RFID is used in combination with sensor network.Also can obtain sensor network and RFID although it is so in application advantage, but said system is not integrated into the electronic label read/write function in the sensor node, cost is higher, size is big, use inconvenience and the flexibility of deployment shortcoming.
(3) in the existing wireless sensor network application system; All load some fixed sensing on the sensing unit in most sensor nodes; Yet in actual application environment; A lot of situation need be used the transducer of some other types, load new transducer thereby at this moment also need carry out secondary development to sensor node.This method for designing is very dumb in practical application, is unfavorable for the extensive popularization that wireless sensor network is used.Therefore; But the mode that the sensing unit in the patent of the present invention in the sensor node adopts pedestal sensor and expansion slot to combine; Can let the user load the transducer of various needs easily, thereby greatly improve the availability of wireless sensor network in practical application.
(4) do not have whole process that which research produces food as a system, the quality that will monitor food from pure pollution-free food, half pollution-free food, high yield food and the several angles of dangerous food is classified and the information that will monitor and analyze acquisition directly sends to the user.Simultaneously, the wireless sensor network of existing correlative study does not find that also which kind of wireless sensor network food security intelligent monitor system is that a society is the main users crowd in using.Transformation on this customer group has the important meaning, and it is only exercised supervision food security and extends to social supervision by relevant government department, and this has turning significance in solving food-safety problem.
(5) do not have which research be with food from initial plantation, culture the whole process that the consumer eats and further investigate as an indivisible big system, effectively do not study to the uniqueness problem that sensor node, base-station node and monitored object in this system need have with regard to more having.
To the deficiency of above-mentioned discovery, thinking does not also have a kind of otherwise effective technique can assist administrative department or carries out complete monitoring according to existing food production system.Food production is carried out complete monitoring must could carry out check and analysis to indexs such as the material of product, quality by the multiple sensors technology; Must can low-cost information real-time, that effectively will detect or monitor continuously be sent to user terminal by wireless communication technology; Make society can see on the spot in personly, hear, smell, experience the whole process of food production; And then society can oneself judge that every kind of food is from the former production process of expecting the whole flow process and the quality, particularly some pollution-free foods of product; This food safety monitoring system must can seamless link with existing various wireless, wireline communication networks, thereby can effectively utilize prior art and equipment to reduce the cost of said supervisory control system to the full extent; Transducer described in this food safety monitoring system preferably can have certain storage and disposal ability, thereby can carry out buffer memory and forwarding after the primary treatment to the magnanimity information that transducer obtains.Wireless sensor network as a kind of new technology have fully the food security necessary for monitoring have the ability, and combine the RFID technology can further guarantee the authenticity of monitoring content.
In view of the popularity in the related field of food safety monitoring system and the complexity of require technology; And existing supervisory control system comparatively it is desirable to set up a kind of food safety monitoring system that uses wireless sensor network and RFID technology in the deficiency in food security field.
Summary of the invention
The objective of the invention is to solve the difficult problem that food production can't be carried out omnidistance socialization monitoring effective, feasiblely; And existing monitoring technique can't be used for the deficiency of food security monitoring, and a kind of food security socialization monitoring system based on the RFID wireless sensor network is provided.
In order to achieve the above object, the present invention adopts following technical scheme:
A kind of food security socialization monitoring system based on the RFID wireless sensor network comprises:
Sensor node and RFID by being distributed in the varieties of food items source form first order RFID wireless sensor network;
Sensor node and RFID by being distributed on food preliminary working zone and the process equipment form second level RFID wireless sensor network;
Sensor node and RFID by being distributed on food deep processing zone and the process equipment form third level RFID wireless sensor network;
By three grades of base-station nodes radio communication respectively and between above-mentioned first to the third level RFID wireless sensor network;
Being connected with communication network with the management control center server by above-mentioned three grades of base-station nodes forms the monitor network at user oriented terminal, and wherein communication network comprises one or more of INTERNET network, satellite communication network, 3G communication network;
Form user terminal by communication terminal, wherein communication terminal comprises one or more of mobile phone of the computer that connects the INTERNET network, satellite communication network terminal, 3G communication network; All integrated rfid interrogator and said electronic tag operating frequency are identical with radio frequency chip operating frequency in the said sensor node in sensor node in the said RFID wireless sensor network at different levels and the said base-station nodes at different levels; And; In said sensor node with the important information that can characterize the sensor node uniqueness as digital watermark information; Adopt digital watermarking algorithm to carry out encrypted transmission, the wherein said information that can characterize the sensor node uniqueness refers to the hardware ID information and the key of uniqueness identification information from label, clock information, each transducer.
In such scheme, said food source, food preliminary working and food deep processing are by planting or culture the relative division that the edible preceding whole process of consumer is carried out as an indivisible continuous integral body to food for three grades.Because any food has the food chain that a complicacy behind, each link in this link all can influence each other.Therefore; It is far from being enough only some index of this link (like the residues of pesticides on the vegetables etc.) or certain link (like some food processing enterprises etc.) being analyzed, and must proceed from the situation as a whole that whole process is carried out multiple sensible form and merge the overall situation monitoring that utilizes.This division purpose among the present invention is from whole angle the whole process of food " by the farmland to dining table " to be studied as the system of an interwoveness, thereby analyzes the weak spot of food safety monitoring on the whole and solve.All integrated rfid interrogator and said RFID operating frequency are identical with radio frequency chip operating frequency in the said sensor node in sensor node in the said RFID wireless sensor network at different levels and the said base-station nodes at different levels.Be the CPU of utilizing self in the sensor node in the said RFID wireless sensor network, wireless communication unit, power subsystem and antenna part realize rfid interrogator the literacy that will accomplish to label; Its with ultra broadband (UWB) as the radio communication interface, thereby can make it to be used for more neatly the complicated multi-path environment of food processing enterprises and the abundant monitoring field, farmland on a large scale of mobility environment.To adopt digital watermarking algorithm to carry out encrypted transmission from the important information that can characterize the sensor node uniqueness such as the hardware ID information of the uniqueness identification information of label, clock information, each transducer and key as digital watermark information in the said sensor node.Owing to can not only assist government regulator and food enterprise that the food production process is monitored based on the food security socialization monitoring system of RFID sensor network; Main is that this system will can directly monitor society through multiple sensible form towards numerous crowds to the whole process real-time that food produces.Therefore for the enterprise that has food-safety problem, hope on the one hand to utilize this system to improve the product reputation of oneself, become domestic consumer and international community relieved brand fully, to improve the market value of own product.According to user's query contents, the monitoring information that this system obtains can send to the user in real time on the other hand.The operation meeting that relates to food-safety problem is more so directly found by society, thereby enterprise is caused irremediable loss.Therefore require monitored food enterprise and individual; Can not be through distorting, replace or destroy the modes such as target of sensor node, base-station node and monitoring; Destroy the prerequisite real-time of this system, validity and authentication feature; Be in the system each node all by system management, maintenance department dispose, each node all is that unique, all monitoring objectives all have the uniqueness sign of oneself and with the correlation between each monitoring objective of embodied of polynary group in system in whole system; We are called the uniqueness problem of this system with this type problem, and it will determine directly that can this system be widely used in reality.Some enterprises and individuals can be under huge interests drive in the practical application; Seek this uniqueness that the whole bag of tricks destroys system; Thereby before the method that proposes uniqueness; Must to actual deployment environment, system works form and in time the tracking system problems such as uniqueness potential safety hazard that possibly exist analyse in depth, in practical application condition and RFID wireless sensor network under the constraint of node limited resources, this will be very difficulty but the continuous safety problem of solution.For this reason; Proposed among the present invention in said sensor node and will be embedded into as digital watermarking in the sensitive information of monitoring of sensor node and base-station node and transmission from important information that can characterize the sensor node uniqueness such as the hardware ID information of the uniqueness identification information of label, clock information, each transducer and keys; Structure is based on the RFID wireless sensor network information watermark frame model of uniqueness information; Form reliably, data message that can not distort, complete and monitoring information inquiry system, the digital watermark method that utilization simultaneously has uniqueness information can also improve the security performance of RFID wireless sensor network protocols effectively.As a kind of Information Hiding Techniques, can in information flow, embed secret informations such as meaningless random sequence or meaningful copyright sign, user's sequence number in the watermark of above-mentioned number formulary word, so as to realize information copyright protection, prevent illegal etc.In this project, with label information on time, node hardware ID, polynary array and the monitoring objective etc., the information with uniqueness characteristic embeds as digital watermarking.
In such scheme; Further; The control command of said system can only be by this management control center server issue; Sensor node in the said RFID wireless sensor network at different levels and said base-station node at different levels can be realized the controlled function of instruction; And said query statement can be sent by any terminal, and making the terminal use pass through this device can be at any time, the production process and the product quality of online truly each flow process of transducer supervision food through video, audio frequency and inspection usefulness everywhere, thus the continuous operation and can truly reflect the information of being monitored effectively of assurance system; RFID wireless sensor networks at different levels in the said system are in round-the-clock continuous duty all the time.
In the case, further, the perception of the sensor node in the said RFID wireless sensor networks at different levels part and the characteristics in place food processing stage adapt, but and said sense part branch be designed with expansion slot more than.Because system according to the invention relates to applied environment complicated, that difference is huge.For example; Multiple sensors when being used to monitor the animal and plant growing state in food source; For example detect the chemical sensor whether used synthetic chemical fertilizer, monitoring animal and plant growth cycle video sensor, detect the transducer of animal feed quality and monitor chemistry and video sensor of this work-in-process quality or the like; Multiple sensors when being used to monitor food processing process is for example monitored some physical sensors of production equipment ruuning situation, the video sensor of monitoring production process and transducer that product quality is detected or the like.Thereby; When designing and producing the sensor node of said system; It is infeasible fully that the transducer that uses under the different application environment is all disposed on each sensor node; On the other hand, need understand detection technique and some of each link to varying environment Application Design and the sensor node of producing configuration difference in functionality transducer in depth and for the enterprises and individuals, maintain secrecy, thereby this method also is infeasible.Take all factors into consideration, think that effective, easy and the most feasible method is the expansion slot that sensing unit (part) design at sensor node can the various dissimilar sensors of flexible configuration.This design philosophy is similar with the design philosophy of the large-scale charger for mobile phone that a lot of public places are placed; All be to extract the common interface characteristics of object (transducer or mobile phone); As the connecting interface of object and processing unit (part such as the central processing unit of sensor node and power supply or the power supply of supplying power), thereby can use different objects easily and flexibly to mobile phone.And, being used for wireless transceiver circuit that communicates with neighbor node and the data processor that is connected with transducer and transmission circuit, each said sensor node has solar energy or lithium battery.
In such scheme; Further; The object that sensor node in the said RFID wireless sensor network at different levels and RFID label are monitored is by perception and sign and generate not replaceable information; As digital watermark information, adopt digital watermarking algorithm to carry out encrypted transmission the sudden change threshold values of this perception information, be sent to place base-station node time processing after the sensor node preliminary treatment of said information by communication with it and send said management control center server at last to and handle, issue.Whether perception information suffers that artificial destruction can comprehensively judge according to the variable quantity and the time factor of perception information parameter; Confirm different sudden change threshold values according to different perception information parameters; When the variation of a certain monitoring target perception information surpassed the digital watermark information sudden change threshold values of reserving, the sensor node at this monitoring target place can generate the unusual report of this monitoring target automatically and report is sent to base-station node and management control center server.The main purpose of this design is in order to ensure the uniqueness of monitored target and authenticity, and the object of make finding, being examined is the object of user's (or management Control Server) appointment, and this point is significant in system according to the invention.
In such scheme, further, the sensor node in the said RFID wireless sensor network can be divided into mobile and static two kinds according to deployed environment.
In such scheme, further, between the sensor node in the said RFID wireless sensor network and between sensor node and the base-station nodes at different levels all through the wireless mode formation wireless self-networking of communicating by letter.
In such scheme; Further; The RFID that is widely used in the said system carries out the uniqueness sign; Specifically comprise: the sensor node in every grade of RFID wireless sensor network all is integrated with rfid interrogator, also all is integrated with rfid interrogator on the base-station node in every grade of RFID wireless sensor network, can also some rfid interrogators be set according to concrete work-yard at diverse location with environment simultaneously and also can carry out radio communication with base-station node.
In such scheme; Further; Said system is in such scheme, and further, said system user terminal (terminal) can be that the computer of networking, the cellphone subscriber who opens 3G, wired or digital cable customers and other use user terminal wireless, wireline communication network arbitrarily.
Compared with prior art, the invention has the advantages that:
The present invention can be from food production expects that from former the whole flow process of product carries out complete monitoring, and have that volume is little, low in energy consumption, networking easily, social utility be worth big, dispose implement convenient, with low cost, society can directly monitoring etc. remarkable advantage.
Description of drawings
Fig. 1-for the present invention is based on food security socialized supervision, the detection system operation principle sketch map of RFID wireless sensor network and RFID;
Fig. 2-be the sketch map of sensor node in the instance of the present invention;
Fig. 3-be the sketch map of basic point in the instance of the present invention.
Fig. 4-for the present invention is based on food security socialized supervision, the detection system holistic approach flow chart of RFID wireless sensor network and RFID
Fig. 5-be the user access information process chart in the instance of the present invention
Fig. 6-be the green milk meat products of the present invention socialization monitoring exemplary plot
Embodiment
Further specify below in conjunction with accompanying drawing:
Shown in Fig. 1, the formation of system of the present invention comprises 2 kinds of nodes and 1 control and management server, and the title and the function of various device are following:
(1) sensor node.Be distributed in the inside of different monitored areas according to certain rules; Be responsible for gathering interested perceptual parameters in each monitored area; Like temperature, humidity, plant pesticide remnants, used chemical fertilizer type, the use of industrial processes raw material and products in circulation process etc., and send the data route to the base-station node of this monitored area.
(2) base-station node.Be equipped with a base-station node in each monitored area, mainly be used for being responsible for collecting the data that all sensing nodes are gathered in this monitored area, and send data transmission network to.
(3) management control center server.Gather all monitored area data computing machine systems, generally be positioned at long-range management control center.Be responsible for to analyze, show and the supervision network data, generate the safe suggestion of food production process automatically; And issue real-time oversight information through forms such as Internet to the social common people, the safety instruction of whole industrial that the social common people also can utilize user terminal to watch in real time to have disposed RFID wireless sensor network food and raw material quality supervision.
Say that on the whole system of the present invention mainly is made up of control and management center, base-station node and RFID radio sensor network monitoring zone three parts.Shown in accompanying drawing 1, specifically comprise sensor node, base-station node and control and management central server, they constitute whole food security socialized supervision, detection system based on the RFID wireless sensor network jointly.Sensor node is to use at most, kind node the most widely; These nodes can be static or motion, can equip video sensor or chemistry, physical sensors realize to growing process, fertilizer in the raw material plantation apply that process, agricultural chemicals apply that process and industrial processes are raw materials used in producing, machining process and products in circulation process carry out whole process and supervise, and each sensor node all have can not distort, irreplaceable uniqueness electronic mark.Base-station node is information gathering, the transmission node that each monitored area is equipped with, and this node is fixed, and has represented the exclusive number of this monitored area, generally is placed on the geometric center position of monitored area.It had both converged the perception data of one's respective area, accomplished the controlled function that the management Control Server is given again.The management Control Server gathers all monitored area data computing machine systems, generally is positioned at management control center at a distance.The safe suggestion of being responsible for analyzing, show and supervise network data and generating the food production process automatically; And issue real-time oversight information through forms such as Internet to the social common people, the safety instruction of whole industrial that the social common people also can utilize user terminal to watch in real time to have disposed RFID wireless sensor network food and raw material quality supervision.
System of the present invention has real-time oversight, warning function, and the management control center server can be handled the food security hidden danger that exists in each monitored area and can produce great food-safety problem warning message, and stores and send to corresponding supervision department in real time.For extrahazardous food security hidden danger, terminal server can be reported to the police with the form of voice, so that relevant supervision department handles in time.Among the present invention functions peculiar be exactly can be at any time, any link of the whole flow process of locating query food production everywhere; This has made full use of the location and the RFID technology of wireless sensor network; The user only need be through terminal server issue specific instruction; Food security socialized supervision, detection system by based on the RFID wireless sensor network automatically navigate to the node in the indication zone, and report the monitoring parameter of present this point to the user.
Fig. 2 has embodied the overall structure of sensor node.
Because in the present invention, need be with sensor node deployment in different application environments.Thereby in sensor node, concrete monitoring index and the deployed environment that can accomplish are as required used different sensor and contour structures.But sensor node still can abstractly be divided into perception, information processing, RFID card reader, less radio-frequency and the power supply several sections shown in Fig. 2.The perception part mainly comprises the transducer and the interface circuit composition that is used for the extended loading new sensor that is used for index interested in the deployment region is carried out perception.The information treatment part branch comprises central processing unit, memory and node identify label and clock composition.Integrated rfid card reader part in sensor node; Mainly confirm in order the identity of monitoring target to be carried out uniqueness; And be combined in enciphered message and the uniqueness information that is provided with in the agreement that loads on the sensor node and the algorithm, make monitored target can't forge this sensor node, can't distort important information in this sensor node, can't in the whole big flow process of food production, replace monitored material.The less radio-frequency part mainly is that the data that information processing partly need transmit are carried out sending with certain frequency after conversion, spread spectrum and the modulation, and the CC2420 that general employing frequency is 2.4G among the present invention is as the less radio-frequency main chip.Wherein, central processing unit, memory, clock are connected in transducer and corresponding information processing and the wireless communication section of measuring special parameter.Sensor node provides the various power mode according to different deployed environment, and for example when the farmland was monitored, the form that can adopt solar energy and battery to replenish was each other supplied power; When in the industrial environment of food processing and production and animal feeding, monitoring, the mode that adopts the electric power system used in battery and industry and the raising factory to be used in combination is supplied power.
Fig. 3 has embodied the structure of base-station node of the present invention.
As shown in Figure 3; The monitored base stations node is made up of central processing unit, memory, power supply, RFID card reader, wireless communication section and wired network communication interface section, and CPU, memory are connected in RFID card reader, wired network communication interface section and wireless communication section.Monitored base stations must adopt the wireless mode that combines with wire communication; Information Monitoring aggregation node as the different monitored areas of chain type RFID wireless sensor network; Be sent to long-range management Control Server through cable network; After long-range management Control Server processing, process information is sent to the user through wired with Radio Network System in real time.Base-station node is to be supplied power by the mode that civil power and back-up source combine.
Fig. 4 has embodied the food security socialized supervision based on the RFID wireless sensor network, the overall process of detection system work.
As shown in Figure 4; The remote management and control server through the base-station node in wired or wireless network, the monitored area at different levels, move and the static sensors node to the real-time direct monitoring of interested index in each monitored area; Utilize this cover intelligent monitor system can realize the relevant each item index of food security in the monitored area is monitored; And, realize the most at last food is carried out real-time oversight and control from the overall process of planting processing along with the continuous expansion of monitored area and perfect.Its concrete steps are following:
Step s4-1: management control center starts whole system;
Step s4-2: wireless sensor node and base-station node in all guarded region deployed start at once;
Step s4-3: service centre confirms the physical location and the operating state of a wireless sensor node and base-station node in management control, repairs at the appointed time and the record trouble reason if go wrong;
Step s4-4: if if all wireless sensor nodes and base-station node all are presented at management control all wireless sensor nodes of clothes and base-station node all is presented on the management Control Server; Then confirm all node regions, distribute the uniqueness sign; And begin communication, each monitored area is monitored in real time;
Step s4-5:, then reorientate wireless sensor node and base-station node if also have node on the management Control Server, correctly to show;
Step s4-6: if static sensor node, then the route through other static sensors node communicates with the base-station node that belongs to the monitored area, and interested index in this zone is monitored in real time;
Step s4-7: if the wireless sensor node that moves, because the restriction of the communication distance of radio communication in the process of its motion, may be led to different static wireless sensor nodes;
Step s4-8: after the wireless sensor node that moves detects the static wireless sensor node that can communicate by letter with it, form RFID wireless sensor network from group with the static wireless sensor node and the base-station node of monitored area, place;
Step s4-9: long-range management Control Server connects each base-station node, sends instruction and receives the data that base-station node is beamed back to each base-station node;
Step s4-10: the management Control Server is analyzed all wireless sensor node monitoring informations that obtain, and utilizes the graphical interfaces that is easy to watch to be presented at the management Control Server.
Fig. 5 has embodied food security socialized supervision, the detection system information processing flow process of access based on the RFID wireless sensor network.Its concrete steps are following:
Step s5-1: user terminal sends the food information that will check to the management Control Server of this system, and the automatic location of system is with this food each concrete zone from planting processing; Step s5-2: system works is normal fully in all concrete guarded regions that this food relates to, and then with the video and the perception data of specified monitored area, utilizes graphical interfaces to show that directly also coupling system analysis conclusion sends to the user;
Step s5-3: if exist in the guarded region that this food relates to can't operate as normal sensor node or (with) base-station node; Then sensor node in the guarded region that goes wrong and base-station node are carried out examination; The management Control Server starts should all monitoring equipments of zone and synchronously this zone is monitored by satellite, and charge to credibility record.Simultaneously, to instruction manual will be at the appointed time repair system and apologize, return the fees thus collected and introduce failure cause;
Step s5-4: if in the guarded region that this food relates to all the sensors node or (with) base-station node is all in operate as normal, then record trouble reason, punishment responsible person concerned and to instruction manual repair system and apologize, return the fees thus collected and introduce failure cause at the appointed time;
Step s5-5: solve fault at the appointed time and make food security socialized supervision based on the RFID wireless sensor network, detection system fully after the operate as normal; With the video and the perception data of the related monitored area of user's assigned food, utilize graphical interfaces to show that directly also coupling system analysis conclusion sends to the user;
Step s5-6: video and perception data and network analysis conclusion that user receiving system sends, and transmission satisfaction etc. feeds back to the management Control Server.
As shown in Figure 6, each link that green beef, dairy produce food chain directly relate to is all according to zoned format of the present invention, and the RFID sensor network of disposing different stage is used to monitor the All Ranges in this food chain.Dispose a plurality of sensor nodes of the present invention (comprising the sensor node that has video sensor) according to actual environment in the monitored zone; All have one or more RFID labels on each monitoring objective (object); The local RFID wireless sensor network that the sensor node of each different monitored areas deployed and RFID label are formed all belongs to different stage RFID wireless sensor network in whole system part is presented on the management Control Server, and each local RFID wireless sensor network has a base-station node at least.The information that local RFID wireless sensor network in the RFID wireless sensor networks at different levels obtains this monitored area inner sensor through base-station node is artificially revised the ground real-time Transmission without the external world and is given the management Control Server; Base-station node and management communicating by letter and can adopt wired or wireless transmission according to actual conditions between Control Server are referred to as data transmission network among the present invention.The original video of the sensor acquisition that the management Control Server is concerned about the user according to the Query Information of user terminal with detect indication information and management Control Server system to the analysis result that detects index; Artificially transmit user terminal without any external world with revising; Simultaneously; Video that the management Control Server arrives according to sensor acquisition in the RFID wireless sensor networks at different levels and the analysis result that detects indication information are with having existed on beef, the dairy produce or potential food security, quality and operational issue directly sends to quality monitoring department of government concerned.
Specific to green beef, dairy produce field; Both need carry out the whole process monitoring in forage grass growing environment and the quality of ox; These are monitored forage grass environment, quality and obtain the RFID wireless sensor network that is attached to ox RFID label information on one's body and have constituted one-level RFID wireless sensor network, and this one-level RFID wireless sensor network mainly is that the most initial raw material growing environment of this food chain is monitored.The video that whether consistent growing environment of ox (like soil, atmosphere, water, peripheral integrated environment, forage grass and one-level RFID radio sensor network monitoring etc.) and slaughterhouse dispose and detecting is paid close attention to the said sensor node that index uses and is formed secondary RFID wireless sensor network, and this one-level RFID wireless sensor network mainly is that the environment and the product in this food chain preliminary working stage are monitored.The product in this stage mainly comprises the beef that the most original milk, the ox that will be sent to the slaughterhouse and slaughterhouse produce; System according to the invention is with it link as system; Loading the container of the milk of producing, transporting on the car of the ox that this system monitors and the beef of slaughterhouse's operational environment, flow process and final production, transport on the vehicles of required beef of next stage, requirement adds RFID label and one or more said sensor node (wherein on the car real-time video transducer will be arranged) to guarantee the uniqueness of this link system monitoring object according to the invention.Simultaneously in order to prevent this uniqueness of artificial destruction; Proposed among the present invention to be employed in the said sensor node and will be embedded in the sensitive information of sensor node and base-station node monitoring and transmission as digital watermarking from the important information that can characterize the sensor node uniqueness such as the hardware ID information of the uniqueness identification information of label, clock information, each transducer and key and the sudden change threshold values of monitoring target perception information; Structure is based on the sensor network information watermark frame model of uniqueness information; Form reliably, data message that can not distort, complete and monitoring information inquiry system; Utilize this digital watermark method can improve RFID wireless sensor network data transmission safety performance according to the invention effectively, thereby solved uniqueness problem of the present invention to a certain extent.Subsequently, form three grades of RFID wireless sensor networks at the RFID label and the wireless sensor network according to the invention of dairy produce enterprise and beef processing enterprise deployed.This one-level RFID wireless sensor network mainly is that the environment and the product in this food chain deep processing stage are monitored.The product in this stage mainly comprises the milk powder that will on the retail market, sell, dried beef, canned beef or the like; System according to the invention is same with it link as system; Need carry out omnidistance real time on-line monitoring to operational environment, production procedure and product that each step obtained in the enterprises of milk and beef deep processing; Particularly the deployment of video sensor will be selected the position that is fit to so that have good supervision visual angle, and at product that each step obtains or load and all will dispose one or more said sensor nodes and RFID label on this containers of products.Transport on the vehicles of this system product with in the market circulation field and deposit in the environment of this product, require on this product with storage environment in all add RFID label and one or more said sensor node (wherein on the car real-time video transducer will be arranged) to guarantee the uniqueness of this link system monitoring object according to the invention.
Except quality and the fail safe that can monitor green beef, dairy produce, system according to the invention can also be used to monitoring the production overall process quality and the fail safe of green vegetables, grain or the like a series of pollution-free foods.This has very significantly Practical significance for current pollution-free food market present situation hard to tell whether it is true or false.And; The mode of the socialization monitoring that utilizes system according to the invention to propose and realize also has obvious practical significance for effective solution food-safety problem; Enterprise had extremely significantly advertisement benefit; Can help enterprise in society and consumer, to set up extraordinary product image (brand); The difficult problem that can effectively solve the human resources deficiency, can't effectively supervise in real time government regulation part; Can let the consumer pass through oneself as far as consumer (food user) and monitor the food of disposing this system house at any time, everywhere, and then these food of relieved purchase, the relieved engineering of food that boosts consumption, proposes for country provides a kind of very effective solution technically.
The above method for designing and execution mode are merely the preferable main implementation process of the present invention, and be every according to equivalence variation and modification that the present invention did, all at protection range of the present invention.
Claims (2)
- A food security socialized supervision, detect network system, comprising:Sensor node and electronic tag by being distributed in the varieties of food items source are formed first order RFID wireless sensor network;Sensor node and electronic tag by being distributed on food preliminary working zone and the process equipment are formed second level RFID wireless sensor network;Sensor node and electronic tag by being distributed on food deep processing zone and the process equipment are formed third level RFID wireless sensor network;By three grades of base-station nodes radio communication respectively and between above-mentioned first to the third level RFID wireless sensor network;Being connected with communication network with the management control center server by above-mentioned three grades of base-station nodes forms the monitor network at user oriented terminal, and wherein communication network comprises one or more of INTERNET network, satellite communication network, 3G communication network;Form user terminal by communication terminal, wherein communication terminal comprises one or more of mobile phone of the computer that connects the INTERNET network, satellite communication network terminal, 3G communication network;All integrated rfid interrogator and said electronic tag operating frequency are identical with radio frequency chip operating frequency in the said sensor node in sensor node in the said RFID wireless sensor network at different levels and the said base-station nodes at different levels; And; In said sensor node with the important information that can characterize the sensor node uniqueness as digital watermark information; Adopt digital watermarking algorithm to carry out encrypted transmission, the wherein said information that can characterize the sensor node uniqueness refers to the hardware ID information and the key of uniqueness identification information from label, clock information, each transducer;Wherein, three grades of said food source, food preliminary working and food deep processings are by plantation or culture the relative division that the whole process of consumer before edible carried out as an indivisible continuous integral body to food.
- 2. food security socialized supervision according to claim 1, detection network system; It is characterized in that: the control command of said system can only be by this management control center server issue; Sensor node in the said RFID wireless sensor network at different levels and said base-station node at different levels can be realized the controlled function of instruction, and said user terminal can instruct, ask real-time online to consult the raw information on the sensor node in the wireless sensor networks said at different levels of appointment by round-the-clock releasing inquiry.3, food security socialized supervision according to claim 1 and 2, detection network system; It is characterized in that: the perception of the sensor node in the said RFID wireless sensor networks at different levels part and the characteristics in place food processing stage adapt, but and said sense part branch be designed with expansion slot more than.4, food security socialized supervision according to claim 1 and 2, detection network system; It is characterized in that: the object that sensor node in the said RFID wireless sensor networks at different levels and RFID label are monitored is by perception and sign and generate not replaceable information; With the sudden change threshold values of this perception information as digital watermark information; Adopt digital watermarking algorithm to carry out encrypted transmission, be sent to place base-station node time processing after the sensor node preliminary treatment of said perception information by communication with it and send said management control center server at last to and handle, issue.5, food security socialized supervision according to claim 3, detection network system; It is characterized in that: the object that sensor node in the said RFID wireless sensor networks at different levels and RFID label are monitored is by perception and sign and generate not replaceable information; With the sudden change threshold values of this perception information as digital watermark information; Adopt digital watermarking algorithm to carry out encrypted transmission, be sent to place base-station node time processing after the sensor node preliminary treatment of said perception information by communication with it and send said management control center server at last to and handle, issue.
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| CN102811440A (en) * | 2011-06-03 | 2012-12-05 | 苏州两江科技有限公司 | Wireless sensor network safety transmission method based on watermarking technology |
| WO2013071499A1 (en) * | 2011-11-16 | 2013-05-23 | Nokia Corporation | Method and apparatus for providing food safety identification and warning |
| CN102869045B (en) * | 2012-09-04 | 2015-08-19 | 大唐移动通信设备有限公司 | A kind of data transmission method and system |
| CN102917024B (en) * | 2012-09-20 | 2015-10-28 | 华东理工大学 | Based on milk quality monitoring system and the monitoring method thereof of cloud computing and RFID |
| CN103024881A (en) * | 2012-11-30 | 2013-04-03 | 中国舰船研究设计中心 | Node for wireless sensor network |
| CN103067447A (en) * | 2012-12-12 | 2013-04-24 | 陈子豪 | Food information interaction platform based on Web of Things |
| CN103593777A (en) * | 2013-11-26 | 2014-02-19 | 刘启强 | Product traceability authentication method |
| CN104237177A (en) * | 2014-09-19 | 2014-12-24 | 杜晨林 | Food safety testing system |
| CN104581432A (en) * | 2015-01-01 | 2015-04-29 | 北京金石威视科技发展有限公司 | Radio and television safe broadcasting detection method based on digital watermark technology |
| CN104639543A (en) * | 2015-01-29 | 2015-05-20 | 南京三宝科技股份有限公司 | Method for checking legality of collected data of sensor based on radio frequency identification tag ID (identity) |
| CN104702682B (en) * | 2015-02-27 | 2018-06-26 | 上海新储集成电路有限公司 | A kind of deterrence Internet of Things |
| CN113128858A (en) * | 2021-04-16 | 2021-07-16 | 北京金和网络股份有限公司 | Alarm method for catering units |
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