CN105608876A - Pig breeding environment monitoring method based on wireless sensor network - Google Patents
Pig breeding environment monitoring method based on wireless sensor network Download PDFInfo
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- CN105608876A CN105608876A CN201610036973.XA CN201610036973A CN105608876A CN 105608876 A CN105608876 A CN 105608876A CN 201610036973 A CN201610036973 A CN 201610036973A CN 105608876 A CN105608876 A CN 105608876A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/44—Star or tree networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/02—Topology update or discovery
Abstract
The invention relates to a pig breeding environment monitoring method based on a wireless sensor network. The pig breeding environment monitoring method includes that an STM32W108 chip is used as a main control chip for ZigBee wireless transmission, a wireless transmission module is designed and made, a temperature-humidity sensor and an ammonia concentration sensor are connected to monitor environment information in a pigsty, and data are uploaded to a data center through a mixed network topology structure of a star-like-mesh type network for realtime monitoring.
Description
Technical field
The present invention relates to Internet of Things, environmental monitoring, pig-breeding field, relate in particular to a kind of based on wireless biographyThe pig-breeding method of environmental monitoring of sensor network.
Background technology
In pig industry, restricting its factor of production has two main aspects: h and E. Genetic determinationThe Potential feasibility that pig is grown, environmental factor determines what this genetic potential of pig was achievedDegree. The basic demand of environmental safety type pig house construction is that pig house can be from air, feed, drinking-water and ight soil4 aspects realize the control of microorganism total amount, and can protect from several aspects such as air, temperature, humidityThe living condition of barrier live pig. The environmental factors such as temperature, humidity, pernicious gas and air pollution in pig house are straightConnect and affect the growth of pig and breed.
Traditional pig-breeding pattern of China is to obtain desired data by manual measurement, and this pattern not onlyConsuming time for a long time, efficiency is low and need a large amount of manpowers. Wireless sensor network be realize large-scale cultivation mustWant technology, can real-time high-efficiency and obtaining information accurately, large-scale cultivation also enters the demand of environmental monitoringOne step has promoted intelligence sensor to apply in network system.
Summary of the invention
The object of this invention is to provide a kind of pig-breeding method of environmental monitoring based on wireless sensor network,By designing and make ZigBee wireless module, gather the environmental informations such as multiple gases concentration and humiture,Planned network topological structure transmission sensor data, to data center, are entered the environmental data in pig breeding farmMonitoring and early warning that row is real-time, the growing environment of guarantee live pig, realizes the target that allows live pig grow up healthy and sound.
For solving the problems of the technologies described above, main technical content of the present invention is as follows:
A pig-breeding enviromental monitoring equipment based on wireless sensor network, comprise terminal acquisition node,Routing node and coordinator node. End sensor node has connected the sensor of several functions, is adding networkingAfter network, start clock and interrupt routine, start by set date data acquisition function, and by data upload. Routing nodeBe responsible for monitor channel, be ready at all times to receive the data that other nodes need to upload and forward. Telegon jointThe data that the main normal work of being responsible for configuration network parameter, start network maintaining network of point, reception gatherAnd processing is transferred to host computer. Wherein end sensor node can connect Temperature Humidity Sensor and ammonia concentrationSensor, monitors environmental information in pig house.
A pig-breeding method of environmental monitoring based on wireless sensor network, is characterized in that, systemTerminal node has respectively connected different sensor processing modules, can belong to different subsystems, and pending data is adoptedAfter collection, unification transfers to coordinator node via the router node in master network and is connected to host computer again again,So adopt hybrid network topological structure. Each pig house is a subsystem, comprises some in each subsystemIndividual end sensor node, gathers humiture data and ammonia concentration data. Each subsystem adopts Star NetworkTopological structure, the data unification of each end sensor node collection is collected to the Centroid of each Star network,A routing node, then by this routing node by data upload to the routing node place in master network. And leadNetwork using mesh network topology structure, each routing node stored can transmission range in the road of other nodesBy showing, in the time that a path is congested, select other paths to transmit, the data that gather are disperseed to transmissionTo coordinator node, avoid as far as possible causing the loss of network congestion and packet. Accompanying drawing 11 is opened up for networkFlutter structure chart.
Advantage of the present invention
1. highly sensitive. By optimal design sensor, improve instrument monitoring sensitivity, can expire betterThe demand of foot pig farm ambient parameter sensitivity.
2. cost is low, easy to maintenance. Hardware device, by independent research, only needs to buy the units such as Miniature SensorDevice, with low cost; Once can tie up according to the changes in demand of system after system successful installation simultaneouslyProtect.
3. reliability is high, and real-time is good. Comprise the reliability of the stability of a system, transfer of data; DataPropagation delay time is little, substantially requirement of real time.
Brief description of the drawings
Fig. 1 is wireless module main control chip figure of the present invention
Fig. 2 is radio node figure of the present invention
Fig. 3 is main control module circuit design drawing of the present invention
Fig. 4 is power module circuitry design drawing of the present invention
Fig. 5 is RS232 Modular circuit design figure of the present invention
Fig. 6 is Flash Modular circuit design figure of the present invention
Fig. 7 is clock module circuit design drawing of the present invention
Fig. 8 is Temperature Humidity Sensor Modular circuit design figure of the present invention
Fig. 9 is ammonia gas sensor pictorial diagram of the present invention
Figure 10 is ammonia gas sensor Modular circuit design figure of the present invention
Figure 11 is network topology structure figure of the present invention
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described further.
A pig-breeding enviromental monitoring equipment based on wireless sensor network, comprise terminal acquisition node,Routing node and coordinator node. The main control chip of the ZigBee radio node that accompanying drawing 1 is selected for the present invention,Three kinds of nodes are all the different separately tasks that completes under the control of main control chip. This chip is STMicw Electronics(ST) the STM32W series less radio-frequency WSN/ZigBee single-chip microcomputer that company will release the end of the year 2009STM32W108. It is keeping, on the basis of low-power consumption, having adopted 32 ARMCortex-M3 kernels, toolThere is more powerful disposal ability; Inner with power amplifier (PA), can reach+7dBm of transmitting power output,Just can obtain larger communication distance without outside power amplifier; The different editions of chip has solidified respectively802.15.4MAC, the protocol stack such as ZigBee, RF4CE, without understanding, developing network agreement, just can enterRow product development.
Accompanying drawing 2 is radio node figure of the present invention, the hardware module corresponding to node of above-mentioned three kinds of difference in functionalitysBe identical, only end sensor node need connect the sensor that various functions are different on the basis of Fig. 2,But three's essential distinction is to embody at software view. Radio node mainly comprises the mould of following each functionPiece:
1.ZigBee main control module. Main control module has connected other each functional modules, after node powers on, mainControl module starts, and calls the instruction of having stored, and operates each module and completes function separately. Accompanying drawing 3 is master controlModular circuit design figure.
2. power management module. In the network node based on ZigBee, each module required voltage is 3.3V.Because node device is all deployed in inside pig house, easily obtain the alternating voltage of 220V, in addition node deviceMust possess the stability of good moistureproof and waterproof and long-term operation, so adopt the Alternating Current Power Supply of 220VMode will be better than powered battery mode. Concrete power supply plan is by 220V alternating current by power supply adaptorPressure is converted to the DC voltage of 5V, then the DC voltage of 5V is converted to 3.3V. ZigBee modular designUsb power supply and two kinds of power supply modes of outside DC5-9V, and be provided with power switch. Accompanying drawing 4 is power supplyModular circuit design figure.
3.RS232 serial port module. ZigBee modular design Liao Yi road RS232 interface (DB9 connector), nothingThe USART of wire module is connected to J2 by SP3223 chip, and the signal of J2 port is standard RS232 level.Hardware device can be connected with the serial ports of computer and directly be transmitted data by RS232 serial port module, also canConnect other hardware device by serial ports. Accompanying drawing 5 is RS232 Modular circuit design figure.
4.Flash module. ZigBee modular design 1M serial FLASH chip, chip model is M25P10-A, for carrying out data record, storage. Accompanying drawing 6 is Flash Modular circuit design figure.
5. clock module. Adopt the clock chip of PCF8563 as system, PCF8563 is PHILIPS public affairsA technical grade that department releases includes the multifunction timepiece/day with extremely low power dissipation of I2C EBI functionGo through chip, multiple warning function, timer function, the clock output function of PCF8563 and interrupt defeatedGo out the timing services that function can complete various complexity.
The address of PCF8563 and data are by I2C EBI serial transfer, and processor module is as I2CMain frame have SDA and scl line, SDA is two-way data port, SCL is synchronizing clock signals delivery outlet;The slave of I2C also has corresponding SDA and scl line, and SDA is two-way data port, and SCL is synchronised clock letterNumber input port. Once processor enables I2C function, under default situations, use DIO14 as clock SCL,DIO15 is as the data port SDA of two-way communication. Accompanying drawing 7 is clock module circuit design drawing.
Except the above public module, also need to connect different sensors for end sensor nodeCarry out the collection of data. The design of sensor assembly is as follows:
1. Temperature Humidity Sensor module. It is the integrated humiture of a height that Temperature Humidity Sensor adopts SHT75Sensor chip, the numeral output that provides gamut to demarcate. Sensor comprises a capacitive character condensate humiditySensing element and a use can be washed the temperature-sensing element (device) that material is made, these two sensing elements and one 14A/D converter and a serial interface circuit of position design on a chip. The response of this sensor is ultrafast,Antijamming capability is strong. Accompanying drawing 8 is Temperature Humidity Sensor Modular circuit design figure.
The supply voltage of SHT75 is 2.4～5.5V. After sensor powers on, wait for that 11ms completes " notSleep " state. Between power pins (VDD, GND), can increase the filter capacitor of a 100nF. SCK usesIn and microprocessor between communication synchronize. Because interface has comprised complete static logic, thereby do not existLittle SCK frequency. DATA triple gate reads for data. DATA is change state after clock trailing edge,Only effective at rising edge. During transfer of data, in the time of SCK clock high level, it is stable that DATA need keep.
2. ammonia gas sensor module. Ammonia gas sensor adopts three-electrode electro Chemical formula alcohol gas sensorME4-NH3, as accompanying drawing 9, it is wide, anti-interference that it has low-power consumption, high accuracy, high sensitivity, the range of linearityThe repeatability that ability is strong and excellent and stability, be widely used the inspection that is applicable to NH3 under industry, ore deposit and in environmental protectionSurvey. Detection range 0-50ppm, maximum measurement is limited to 200ppm.
ME4-NH3 is according to electrochemical principle work, utilizes gas to be measured in electrolytic cell on working electrodeElectrochemical oxidation process, by electronic circuit by constant in one to the working electrode of electrolytic cell and reference electrode, under this current potential, can there is the electrochemical oxidation of gas to be measured in suitable current potential, due to oxygen in oxidation and alsoThe faradic currents that produce when former reaction are very little, negligible, so gas eletrochemistry to be measured reactionThe electric current producing is directly proportional and follows Faraday's law to its concentration. Like this, by measuring the size of electric currentJust can determine the concentration of body to be measured. Accompanying drawing 10 is ammonia gas sensor Modular circuit design figure.
A pig-breeding method of environmental monitoring based on wireless sensor network, is characterized in that, systemTerminal node has respectively connected different sensor processing modules, can belong to different subsystems, and pending data is adoptedAfter collection, unification transfers to coordinator node via the router node in master network and is connected to host computer again again,So adopt hybrid network topological structure. Each pig house is a subsystem, comprises some in each subsystemIndividual end sensor node, gathers humiture data and ammonia concentration data. Each subsystem adopts Star NetworkTopological structure, the data unification of each end sensor node collection is collected to the Centroid of each Star network,A routing node, then by this routing node by data upload to the routing node place in master network. And leadNetwork using mesh network topology structure, each routing node stored can transmission range in the road of other nodesBy showing, in the time that a path is congested, select other paths to transmit, the data that gather are disperseed to transmissionTo coordinator node, avoid as far as possible causing the loss of network congestion and packet. Accompanying drawing 11 is opened up for networkFlutter structure chart.
Claims (3)
1. the pig-breeding enviromental monitoring equipment based on wireless sensor network, comprises terminal collection jointPoint, routing node and coordinator node. Each node mainly comprises with lower module:
(1) ZigBee main control module. Main control module has connected other each functional modules, after node powers on,Main control module starts, and calls the instruction of having stored, and operates each module and completes function separately;
(2) power management module. In the network node based on ZigBee, each module required voltage is3.3V. Because node device is all deployed in inside pig house, easily obtain the alternating voltage of 220V, in addition jointPoint device must possess the stability of good moistureproof and waterproof and long-term operation, so adopt the friendship of 220VStream power supply mode will be better than powered battery mode. Concrete power supply plan is by 220V by power supply adaptorAlternating voltage is converted to the DC voltage of 5V, then the DC voltage of 5V is converted to 3.3V. ZigBee mouldPiece has designed usb power supply and two kinds of power supply modes of outside DC5-9V, and is provided with power switch;
(3) RS232 serial port module. ZigBee modular design Liao Yi road RS232 interface (DB9 connector),The USART of wireless module is connected to J2 by SP3223 chip, and the signal of J2 port is standard RS232 electricityFlat. Hardware device can be connected with the serial ports of computer and directly be transmitted data by RS232 serial port module, alsoCan connect by serial ports other hardware device;
(4) Flash module. ZigBee modular design 1M serial FLASH chip, chip model isM25P10-A, for carrying out data record, storage;
(5) clock module. Adopt the clock chip of PCF8563 as system, the address of PCF8563 and numberAccording to passing through I2C EBI serial transfer, processor module has SDA and scl line as the main frame of I2C,SDA is two-way data port, and SCL is synchronizing clock signals delivery outlet; The slave of I2C also has corresponding SDAAnd scl line, SDA is two-way data port, SCL is synchronizing clock signals input port. Once processor makesEnergy I2C function, is used DIO14 as clock SCL under default situations, DIO15 is as the number of two-way communicationAccording to mouth SDA.
2. the pig-breeding enviromental monitoring equipment based on wireless sensor network according to claim 1,Attachable sensor has:
(1) Temperature Humidity Sensor module. It is 2.4～5.5V that Temperature Humidity Sensor adopts the supply voltage of SHT75.After sensor powers on, wait for that 11ms completes " dormancy " state. Power pins (VDD, GND) itBetween increase the filter capacitor of a 100nF. The communication that SCK is used between microprocessor is synchronizeed. Owing to connecingMouth has comprised complete static logic, thereby does not have minimum SCK frequency. DATA triple gate is read for dataGet. DATA is change state after clock trailing edge, only effective at rising edge. During transfer of data,When SCK clock high level, it is stable that DATA need keep;
(2) ammonia gas sensor module. Ammonia gas sensor adopts three-electrode electro Chemical formula alcohol gas sensorME4-NH3, detection range 0-50ppm, maximum measurement is limited to 200ppm.
3. the pig-breeding method of environmental monitoring based on wireless sensor network, is characterized in that, isThe terminal node of system has respectively connected different sensor processing modules, can belong to different subsystems, waits to countAfter gathering, unify again to transfer to coordinator node via the router node in master network and be connected to againPosition machine, so adopt hybrid network topological structure. Each pig house is a subsystem, in each subsystem, wrapsContaining several end sensor nodes, gather humiture data and ammonia concentration data. Each subsystem adopts starType network topology structure, the data unification of each end sensor node collection is collected to the centromere of each Star networkPoint, i.e. a routing node, then by this routing node by data upload to the routing node place in master network.And master network employing mesh network topology structure, each routing node has been stored can interior other nodes of transmission rangeRouting table, in the time that a path is congested, select other paths to transmit, by gather data disperseTransfer to coordinator node, avoid as far as possible causing the loss of network congestion and packet.
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Cited By (2)
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| CN114208682A (en) * | 2021-12-14 | 2022-03-22 | 卧龙电气驱动集团股份有限公司 | Control equipment and system for adjusting livestock breeding environment |
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