CN102435711A - Urban air quality monitoring system based on ZigBee - Google Patents

Abstract

The invention discloses a system designed for monitoring urban air environment quality, which comprises a GPRS (General Packet Radio Service) module, a monitor module, a ZigBee wireless communication module and a monitoring terminal. The GPRS module is used for receiving and transmitting wireless information; the monitor module is used for coordinating wireless terminal information and communicating with the monitoring terminal through the GPRS; the ZigBee wireless communication module is used for sending air quality information; and the monitoring terminal is used for processing the air quality information. The system is flexible, high-efficiency, safe and intelligentized, and can provide great convenience for mastering urban environment conditions.

Description

Urban air-quality monitoring system based on ZigBee

Technical field

The present invention relates to the environmental monitoring field, be specifically related to a kind of urban air-quality monitoring system based on ZigBee.

Technical background

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 technological motion between radio mark technology and BlueTooth (bluetooth).In the short-distance wireless communication field that standard is stood in great numbers; We can say; The fast development of Zigbee makes us quite unexpected; Can not rant out: " in the several years in future, from household electrical appliance to the toy, control to automobile control from factory, the ZigBee technology will enter into the every aspect of our life.”

Clean atmosphere is that the mankind rely in one of necessary condition of existence, and people does not have a meal in five weeks or do not drink water in 5 days, still can earn a bare living, but surpass 5 minutes no breathing air, just can be dead, and human body need suck 10 every day-12 cubic metres air.Atmosphere has certain self-detergent power, because of the pollutant of entering atmosphere such as natural process, is removed from atmosphere by atmosphere oneself purification process, thereby keeps clean atmosphere.

But along with the continuous development of industry and transportation, a large amount of objectionable impuritiess is discharged in the air, has changed the normal composition of air, and air quality is degenerated.Health will be affected live in the air that is polluted when us among.Therefore urban air-quality is monitored so that further management is just imperative.

Summary of the invention

For addressing the above problem, the present invention adopts the ZigBee radio network technique, can realize the radio communication of low cost, low-power consumption and low rate.

For achieving the above object; The technical scheme that the present invention adopts is: a kind of urban air-quality monitoring system based on ZigBee; It is characterized in that: comprise GPRS module, monitor module, a ZigBee wireless communication module, monitor terminal, described GPRS module is connected with monitor terminal;

Described monitor terminal is used for the air quality information processing;

Described GPRS module is connected with monitor terminal, is used for the reception and the transmission of wireless messages;

Described monitor module is used for integration and the coordination of wireless terminal information and sends to monitor terminal through GPRS.

First preferred version of the present invention is it is characterized in that: the GPRS module comprises Q2403.

Second preferred version of the present invention is it is characterized in that: monitor module comprises the MC9S08GB60 microprocessor, the 2nd ZigBee wireless communication module, GPRS module.

The 3rd preferred version of the present invention is it is characterized in that: a described ZigBee wireless communication module comprises chip and antenna, and chip is connected through balance/non-equilibrium impedance inverter circuit with antenna, and chip comprises MC13192;

Further, the ZigBee wireless communication module comprises air mass sensor QS-01 and MC9S08GB60 single-chip microcomputer, and QS-01, GPRS module are connected with MC9S08GB60.

The 4th preferred version of the present invention is it is characterized in that: described monitor terminal comprises

The graphical interfaces that VC++ writes.

Technical conceive of the present invention is: wireless terminal monitoring air quality, to Surveillance center's report air quality information, Surveillance center preserves and handles air quality information to wireless terminal through the ZigBee technology simultaneously.

Technical advantage of the present invention: realized low cost, low rate, the reliable urban air-quality monitoring of low-power consumption.

Below in conjunction with accompanying drawing and embodiment the present invention is further described.

Description of drawings

Fig. 1 present embodiment entire block diagram.

Fig. 2 is that the present embodiment monitor terminal is connected synoptic diagram with the GPRS module.

Fig. 3 is a present embodiment monitor module circuit diagram.

Fig. 4 is a present embodiment ZigBee wireless communication module synoptic diagram.

Fig. 5 is a present embodiment Surveillance center procedure chart.

Fig. 6 is a present embodiment wireless communication module procedure chart.

Embodiment

With reference to shown in Figure 1; The present invention has adopted ZigBee and GPRS network technology, and multiple spot is installed " radio transmitters " with ZigBee function in the city, and Surveillance center comprises the GPRS module; On the one hand; It receives the signal that each radio transmitters sends over, and on the other hand, it sends it back feedforward information to an end of request service.

Fig. 2 is that the present embodiment monitor terminal is connected synoptic diagram with the GPRS module.The choosing of GPRS module

Select the Q2403 of WAVECOM company, this module speed of download is 5316kb/s, and uploading speed is 2618kb/s.Module provides an asynchronous serial communication interface that meets the V24 agreement, supports AES, and integrated radio-frequency circuit and base band be in one, and stable performance can be fast, the reliable transmission, and Q2403 is connected through serial line interface with microprocessor.

Fig. 3 is a present embodiment monitor module circuit diagram.This part is made up of 89C51 processor, wireless GPRS module, wireless ZigBee communication module etc., and this processor has low-power consumption,

Advantages such as high performance-price ratio have reduced cost and have reduced the complexity of system; GPRS can support explosion type data transmission intermittently, can support mass data transmission once in a while again, and data rate is fast.

Fig. 4 is a present embodiment ZigBee wireless communication module synoptic diagram.MC13192 is the 2.4GHz low-power consumption transceiver of IEEE 802.15.4 operating such.The MC13192 transceiver comprises complete 802.15.4 Physical layer (PHY) modulator-demodular unit that is used for IEEE 802.15.4 standard; This standard is supported equity; Star and mesh network and low noise amplifier; The power amplifier of normal output power 1mW and the integrated PLL of voltage controlled oscillator (VCO), the coding and decoding function of power source conversion and all spread-spectrum.MC13192 supports the O-QPSK of 250 kbps and suitable MCU such as 89C51 to make up, and can provide short-range cheaply data to connect and network.Because the radiofrequency signal of MC13192 adopts differential mode, and inverted F shaped antenna is single-ended antenna, thus between chip and antenna, need to use balance/non-equilibrium impedance inverter circuit, to reach best transmitting-receiving effect; The 89C51 processor is accomplished the air information acquisition.

Fig. 5 is a present embodiment Surveillance center procedure chart.The back microprocessor that powers on carries out the initial work of GPRS module and ZigBee protocol stack at first respectively, carries out scan channel and free time then

Channel estimating is selected suitable working channel, selects the suitable network sign, starts the ZigBee network and sends superframe, waits for the connection request of ZigBee equipment.When it receives the connection request of certain equipment, and through after the authentication, affirmation is a legitimate device, just sends the permission bind command, connects to begin formal information processing after setting up.

Fig. 6 is a present embodiment wireless communication module procedure chart.Initialization ZigBee protocol stack at first after the ZigBee device power is gathered air quality information then, and after the finishing collecting, the beginning scan channel sends the request that connects, connect set up after, send the relevant information of oneself, break off connection request afterwards.

Claims (5)

1. urban air-quality monitoring system based on ZigBee, it is characterized in that: comprise GPRS module, monitor module, a ZigBee wireless communication module, monitor terminal, described GPRS module is connected with monitor terminal;

Described monitor terminal is used for the air quality information processing;

Described GPRS module is connected with monitor terminal, is used for the reception and the transmission of wireless messages;

Described monitor module is used for integration and the coordination of wireless terminal information and sends to monitor terminal through GPRS.

2. a kind of urban air-quality monitoring system based on ZigBee according to claim 1, it is characterized in that: the GPRS module comprises Q2403.

3. a kind of urban air-quality monitoring system based on ZigBee according to claim 1, it is characterized in that: monitor module comprises the MC9S08GB60 microprocessor, the 2nd ZigBee wireless communication module, GPRS module.

4. a kind of urban air-quality monitoring system according to claim 1 based on ZigBee; It is characterized in that: a described ZigBee wireless communication module comprises chip and antenna; Chip is connected through balance/non-equilibrium impedance inverter circuit with antenna, and chip comprises MC13192;

Further, the ZigBee wireless communication module comprises air mass sensor QS-01 and MC9S08GB60 single-chip microcomputer, and QS-01, GPRS module are connected with MC9S08GB60.

5. a kind of urban air-quality monitoring system based on ZigBee according to claim 1, it is characterized in that: described monitor terminal comprises the graphical interfaces that VC++ writes.

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