CN104614294A - Hierarchical heterogeneous air quality real-time monitoring model based on Zigbee wireless communication technique - Google Patents
Hierarchical heterogeneous air quality real-time monitoring model based on Zigbee wireless communication technique Download PDFInfo
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Abstract
The invention relates to an air quality monitoring system based on a wireless sensor network. The air quality monitoring system comprises an air quality monitoring terminal module, a wireless sensor transmission module and a physical property data processing and transaction module. Monitoring terminals form a network in an ad-hoc network manner. A data processing center performs real-time process, storage and real-time display on air quality information collected by the terminal module. The air quality monitoring terminals comprise a PM2.5 sensor and an MQ135 sensor. The wireless sensor transmission module comprises a sink node and a relay node. A data processing module comprises a physical property data processing center, a physical property data pricing module and a physical property data display and transaction module. The air quality monitoring system based on the wireless sensor network is not limited by geographical environment and can simultaneously monitor indoor and outdoor air quality changing situations in a certain range in real time; furthermore, the air quality monitoring system has high real-time property, a wide coverage area and high communication capability, and also realizes the energy-saving environmental protection concept.
Description
Technical field
The invention belongs to radio communication and embedded system technology field, be specifically related to a kind of heterogeneous hierarchical air quality timely monitor model based on Zigbee wireless communication technology.
Background technology
Zigbee is the new technology of disposing wireless sensor network.It is a kind of short distance, low rate radio network technique, is a kind of technology motion between radio mark technology and BlutTooth (bluetooth).
Air is the necessary condition that the mankind depend on for existence, and clean air is conducive to the health of the mankind and biological evolution, but in recent years, along with industrial expansion, a large amount of objectionable impurities is discharged in air, changes the normal composition of air, air quality is degenerated.Therefore, air pollution has become a huge obstruction of restriction Beijing and even whole sustainable development of China, and how monitoring and controlling air pollution has become national economic development key subjects in the urgent need to address.For this problem, in conjunction with the technology of Internet of things of current advanced person, the architecture of the air quality monitoring network network based on technology of Internet of things, algorithm and Research on Design are carried out.
Summary of the invention
For solving the problem, the present invention adopts Zigbee radio network technique, can realize low cost, low-power consumption and remote radio communication.
For achieving the above object, the technical solution used in the present invention is: based on the heterogeneous hierarchical air quality timely monitor model of Zigbee wireless communication technology, and this model comprises air quality monitoring module, routing node, aggregation node, thing data processing centre (DPC), thing data pricing model, the display of thing data and transaction platform; Such network is applicable to the network that collection point needs multiple spot dense deployment.
Multiple air quality monitoring node MANET is by routing node and aggregation node wireless connections, by serial ports, air pollution parameter is uploaded to thing data processing centre (DPC), according to thing data pricing model to air pollution parameter price, and air pollution parameter is pushed to the display of thing data and fix a price conclude the business with transaction platform;
Described air quality monitoring module, for the monitoring of air pollution parameter information, obtains the content of the pollutant in zones of different;
Described routing node, completes the networking between terminal node, increases the coverage of zigbee module;
Described aggregation node, receives the air pollution parameter in radio sensing network, and is responsible for and thing data processing centre (DPC) module communication;
Described thing data processing centre (DPC), for the air pollution parameter that real-time processes sensor module collection arrives;
Described thing data pricing model, according to the effect of different affecting factors, determines pricing model and provides concrete price as thing data;
Described thing data display and transaction platform, conclude the business to the thing data that part has been fixed a price.
Described air quality monitoring module comprises MQ135, PM2.5 sensor and CC2530.MQ135 sensor, PM2.5 sensor are connected by common I/O mouth with CC2530.MQ135 sensor, PM2.5 sensor export pwm pulse according to air quality, and calculate current air pollution parameter by statistics pulse signal.
Described routing node by CC2530 and, PA power amplifier module RFX2401C and solar panel; PA module increases the transmission range of data by amplifying radiant power, solar panel provides continuation of the journey.
Described aggregation node turns serial port module CH341 by CC2530 and USB and forms; Air pollution parameter is reached thing data processing centre (DPC) by serial ports by aggregation node.
Described thing Data processing core module comprises process and the storage of air quality data, and process and the storage of air quality data adopt jsp+mysql technology.
Pricing model is by the timeliness of thing data acquisition, and the spatiality of thing data acquisition, the closeness of thing data acquisition, the implicit cost of thing data, the privacy of thing data, the velocity of propagation factor of thing data is determined.
The display of thing data comprises data monitoring, data acquisition, data analysis, data trade, each module of Optimized model with transaction platform.
This model has collection environmental parameter, calculates and process data, and has the feature of low cost low-power consumption.The present invention, relative to prior art, has following beneficial effect:
1. the present invention the multiple air quality parameters of Real-time Collection (can comprise sulfur dioxide concentration simultaneously, nitrous oxides concentration, dust concentration etc.), and indoor and outdoors air quality parameters can be gathered simultaneously, data acquisition wide coverage, does not retrain by geographical environment.
2. its communication ability is strong, and network coverage is wide.The Zigbee wireless communication module of node device adopt CC2430 CC2530 radio frequency chip, and add PA power amplifier module RFX2401C at routing node, effectively extend information transmission distance, reduce signal attenuation.
3. node device runs low in energy consumption, and the software and hardware system of node device all have employed energy-conservation low power design technique, and adds solar panels at the higher routing node of energy consumption and routing node place, effectively extends working time and the life-span of node.
4. process and issue regional air quality in real time, and long-term environmental parameter is stored to the database of monitoring center, facilitating user's supervision and analysis.
5. abstract data pricing model, quantizes data price, the carrying out of thing data can be concluded the business, thus produce great economic benefit.
Accompanying drawing explanation
figure1 structural representation of the present invention
figure.
figure2 format transmission messages of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 1, comprise based on the monitoring terminal module of Internet of Things, information transmission modular, thing data processing and transaction modules based on the heterogeneous hierarchical air quality timely monitor model of Zigbee wireless communication technology.
Air quality monitoring module based on Internet of Things mainly comprises MQ135 sensor and PM2.5 sensor.The model of sensor is as follows: (operating voltage is 5.0V+-0.1V to MQ135 gas sensor, loop voltage is less than 24V, heating power consumption is less than 900Mw, operating ambient temperature range is-10 degrees Celsius to 50 degrees Celsius, storage temperature is-20 degrees Celsius to 70 degrees Celsius, relative humidity is for being less than 95%RH, and the scope of application is 10-1000ppm) MQ135 use gas sensitive be the tin ash (SnO that conductance is lower in clean air
2).When the pollutant levels in air increase gradually, its conductance also increases, output low level, when air cleaning, exports high level.MQ135 sensor to ammonia, sulfide, benzene series steam highly sensitive, to smog and other harmful monitoring also very desirable.This sensor can detect multiple harmful gas, is a low cost sensor being applicable to multiple application.PM2.5 sensor (operating voltage 5.0+-0.5V, way of output PWM width modulation, it is that low level is less than 1.0V that output voltage has during pollutant, be that high level is higher than 4.0V during air cleaning, smallest particles detectability is 1um, sensing range is 15000/283ml, working current is 90mA, storage temperature range-20 degrees Celsius is to 80 degrees Celsius, operating ambient temperature range is-10 degrees Celsius to 60 degrees Celsius, stabilization time be after heater power source is connected about 1 minute) adopt Ion Counting principle, can Sensitive Detection diameter be the ion of more than 1 micron, internal heater can realize automatically sucking air, and size is little, lightweight, easily install and use.
The routing node of information transmission modular adopts wireless sense network to be core technology, use Zigbee protocol transmission information, its acp chip be CC2430 CC2530 radio frequency chip (adopt 8051 microcontroller cores of high-performance and low-power consumption, be integrated with the RF wireless set of 2.4GHz, there is excellent wireless reception sensitivity and powerful anti-interference, during park mode, only the stream of 0.9uA consumes, the stream consumption of 0.6uA is less than time standby, outside interruption energy waken system, operating voltage range is 2.0 ~ 3.6V, hardware supported CSMA/CA function, digitized RSSI/LQI supports powerful DMA function, there is the function of battery detection box temperature sensing, be integrated with AES security coprocessor, the analog-to-digital conversion ADC of integrated 14), RFX2401C is a kind of radio-frequency front-end integrated circuit of superelevation integrated level, incorporate IEEE 802.15.4/ZigBee, AMR/AMI, wireless senser is collected, ANTENN AUDIO/video and many other exempt from all primary radio-frequency front-end functions needed for 2.4GHz ISM band utilization of license.RFX2401C is furnished with a high efficiency power reducer (PA), low noise reducer (LNA), transmit-receive switch, duplexer, impedance marriage collection, harmonic filtration device and CMOS and grasps logic.
The aggregation node of information transmission modular comprise CC2430 CC2530 and CH341.CH341 is the connect chip of a usb bus, provides asynchronous serial port, LPT, parallel port and conventional 2 and 4 wire isosynchronous serial interface by usb bus.Under asynchronous serial port mode, CH341 provides interactively rate controlled signal and the conventional MODEM cues such as serial ports transmission is enable, serial ports ready for receiving, for common serial equipment is directly upgraded to usb bus.Under LPT mode, CH341 provides the standard USB LPT of compatible USB related specifications and Windows operating system, for common parallel port printer is directly upgraded to usb bus.Under the mode of parallel port, CH341 provides 8 bit parallel interfaces of EPP mode or MEM mode and BUS extended mode, under the border not needing single-chip microcomputer/DSP/MCU, and direct inputoutput data.
The present invention adopts the pattern of heterogeneous hierarchical as Fig. 2, in process of the invention process, disposes terminal node, and all arrange a routing node at each floor mouth at floor; Its routing nodes adopts the motherboard of high power band PA power amplifier (acp chip of PA power amplifier is RFX2401C), by enable PA power amplifier module amplifying emission power.Revise protocol stack emissive power simultaneously, strengthen emissive power, strengthen data transmission distance.The routing node of each layer is only responsible for the terminal sensing node information of collecting this layer, then sends to aggregation node; In outdoor, between building, dispose terminal node and aggregation node, to monitor Outdoor Air Quality with field.Air quality monitoring module 1 based on Internet of Things collects air quality information, then air quality parameters is sent to the routing node nearest apart from it, routing node periodically sends to aggregation node after packing to this information, finally sends thing Data Control Center to by aggregation node.
In the present invention, in order to the routing node making power consumption higher increases serviceable life, select solar panels to be routing node continuation of the journey, achieved the energy-conserving and environment-protective theory of model.
Thing data processing module 3 receiving information that aggregation node sends and carrying out analyzing and processing, according to result, the air quality parameters that real-time release is relevant.Prison
The present invention for ease of distinguishing the region of polluting and storing information, be provided with unified transformat (as
figure2), the header of a byte, the terminal number of three bytes, the air quality parameters of four bytes.
Heterogeneous hierarchical air quality monitoring model based on Zigbee wireless communication technology provided by the invention, achieves long distance, low-power consumption, large-scale air quality Real-Time Monitoring.
Claims (7)
1. based on a heterogeneous hierarchical air quality timely monitor model for Zigbee wireless communication technology, it is characterized in that: this model comprises air quality monitoring module, routing node, aggregation node, thing data processing centre (DPC), thing data pricing model, the display of thing data and transaction platform; Multiple air quality monitoring node MANET is by routing node and aggregation node wireless connections, by serial ports, air pollution parameter is uploaded to thing data processing centre (DPC), according to thing data pricing model to air pollution parameter price, and air pollution parameter is pushed to the display of thing data and fix a price conclude the business with transaction platform;
Described air quality monitoring module, for the monitoring of air pollution parameter information, obtains the content of the pollutant in zones of different;
Described routing node, completes the networking between communication module, increases the coverage of Zigbee module;
Described aggregation node, receives the air pollution parameter in radio sensing network, and is responsible for and thing data processing centre (DPC) module communication;
Described thing data processing centre (DPC), for the air pollution parameter that real-time processes sensor module collection arrives;
Described thing data pricing model, according to the effect of different affecting factors, determines pricing model and provides concrete price as thing data;
Described thing data display and transaction platform, conclude the business to the thing data that part has been fixed a price.
2. a kind of heterogeneous hierarchical air quality timely monitor model based on Zigbee wireless communication technology according to claim 1, is characterized in that: air quality monitoring module comprises MQ135 sensor, PM2.5 sensor and CC2530; MQ135 sensor, PM2.5 sensor are connected by common I/O mouth with CC2530.
3. a kind of heterogeneous hierarchical air quality timely monitor model based on Zigbee wireless communication technology according to claim 1, is characterized in that: routing node by CC2530 and, PA power amplifier module RFX2401C and solar panel form.
4. a kind of heterogeneous hierarchical air quality timely monitor model based on Zigbee wireless communication technology according to claim 1, is characterized in that: aggregation node turns serial port module CH341 by CC2530 and USB and forms.
5. a kind of heterogeneous hierarchical air quality timely monitor model based on Zigbee wireless communication technology according to claim 1, it is characterized in that: thing Data processing core module comprises process and the storage of air quality data, process and the storage of air quality data adopt jsp+mysql technology.
6. a kind of heterogeneous hierarchical air quality timely monitor model based on Zigbee wireless communication technology according to claim 1, it is characterized in that: thing data pricing model is by the timeliness of thing data acquisition, the spatiality of thing data acquisition, the closeness of thing data acquisition, the implicit cost of thing data, the privacy of thing data, the velocity of propagation factor of thing data is determined.
7. a kind of heterogeneous hierarchical air quality timely monitor model based on Zigbee wireless communication technology according to claim 1, is characterized in that: the display of thing data comprises data monitoring, data acquisition, data analysis, data trade, each module of Optimized model with transaction platform.
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| CN111756325A (en) * | 2019-03-27 | 2020-10-09 | 上海电机学院 | Photovoltaic module monitoring system and method based on DSP |
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