CN202331119U - Intelligent flow rate monitoring wireless sensor network terminal device - Google Patents

Abstract

The utility model relates to an intelligent flow rate monitoring wireless sensor network terminal device, which mainly consists of a flow rate converter, a data collecting module, a human-computer interaction module, a ZigBee wireless transceiving module and a power supply module, wherein the flow rate converter is connected with the data collecting module and collects data to be processed, the human-computer interaction module is connected with the flow rate converter in a bus mode, the ZigBee wireless transceiving module is connected with the flow rate converter for realizing the data information wireless transceiving function, the flow rate converter, the data collecting module, the human-computer interaction module and the ZigBee wireless transceiving module in the terminal device are respectively connected with the power supply module, and the power supply module provides the work voltage for the whole device. The intelligent flow rate monitoring wireless sensor network terminal device has the advantages of miniaturization, low cost, low power consumption, portability, high precision, intellectualization, and the like.

Description

A kind of intelligent flow monitoring wireless sensor network end device

One, technical field

A kind of intelligent flow monitoring wireless sensor network of the utility model end device; Relate to a kind of fluid flow data message that obtains automatically; And can be according to fluid media (medium), the isoparametric difference of caliber to showing that flow carries out real-time regulated, this locality shows the flow monitoring data or transfers to timely processing, the analysis that PC carries out Monitoring Data through the ZigBee radio receiving transmitting module.It is multi-functional in the intelligent flow monitoring system of one that a kind of intelligent flow monitoring wireless sensor network of the utility model end device is based on monitor set monitoring, demonstration, warning, communication of wireless sensor network etc.; Characteristics such as the integrated level that not only makes full use of single-chip microcomputer is high, function is strong, volume is little, low in energy consumption, dependable performance; And utilize wireless sensor network that Monitoring Data is transmitted, realized real-time detection and monitoring effectively to the flowmeter flow.

Two, background technology

At present, domestic flow measurement at industry and enterprises such as oil, chemical industry, iron and steel, water treatments is checked meter the work overwhelming majority by manual completion, and automaticity is less than 5%, takes a lot of work, time-consuming, hard.Along with the raising that automatic management requires, more and more urgent to the demand of functions such as the remote meter reading of flow measurement, real-time monitoring, statistical study, network inquiry, mobile phones enquiring.Along with the development of wireless sensor network technology,, new approaches are provided for realizing robotization, networking, the intellectuality of traffic monitoring.

Abroad; Along with development of Communication Technique such as sensing net, 3G, computer networks; The various products that utilize sensor network and mobile communications network to monitor have appearred; Comprise supervisory system, large scale structure health monitoring systems, ultra-high-tension power transmission line monitoring system, environmental monitoring system, family health care system etc. under water, but be not applied to the flow monitoring field as yet.In view of characteristics such as wireless sensor network low cost, low-power consumption, flexible arrangement, networking are convenient, be very suitable for the flow monitoring field.

A kind of intelligent flow monitoring wireless sensor network of the utility model end device helps all flow monitoring nodes of unified integration, management enterprise, realizes intensification, networking, the intellectuality of monitoring management.System need not use the great amount of manpower resource to make an inspection tour, check meter and overhaul, and has a significant effect for promoting automatic management level, saving manpower and fund.

Three, utility model content

(1) goal of the invention

The purpose of the utility model is the deficiency that overcomes prior art; Utilize a kind of intelligent flow monitoring terminal set of wireless sensor network advantage exploitation based on wireless sensor network; Have functions such as fluid flow data acquisition, demonstration, wireless transmission, real-time monitoring, realize low-power consumption, low cost, robotization, networking, the intellectuality of flow monitoring.

(2) technical scheme

A kind of intelligent flow monitoring wireless sensor network of the utility model end device mainly is made up of flow converter (1), data acquisition module (2), human-computer interaction module (3), ZigBee radio receiving transmitting module (4) and power module (5); Flow converter (1) links to each other with data acquisition module (2), collect the data that will handle; Man-machine Switching Module (3) links to each other with the mode of flow converter (1) through bus; ZigBee radio receiving transmitting module (4) links to each other with flow converter (1), realizes the radio transmission-receiving function of data message; Flow converter in the end device (1), data acquisition module (2), man-machine Switching Module (3), ZigBee radio receiving transmitting module (4) all links to each other with power module (5), and power module (5) provides WV for whole device.Flow converter (1) adopts the MSP420F4250 single-chip microcomputer, and data acquisition module (2) adopts magnetic potential sensor HMC1501 to gather data on flows, and the LCD LCDs in the human-computer interaction module (3) shows the flow monitoring data; ZigBee radio receiving transmitting module (4) adopts 2.4GHz radio frequency chip CC2430, uses the Z-Stack protocol stack to build the ZigBee network, follows the 802.15.4 agreement, adopts international free 2.4GHZ frequency range communication; LM385-1.2 provides the reference voltage of 1.2V, and reference voltage is exaggerated into the burning voltage of 4.8V through operational amplifier; 4.8V voltage is through voltage stabilizing diode, obtaining 2.8V voltage is that flow converter module (1) provides supply voltage.Use the serial ports asynchronous communication means to realize the data on flows of transducer reception and docking of wireless communication module.Itself does not have asynchronous serial port MSP430F4250, and the utility model adopts timer A to come the simulative serial port function.The specific practice of serial ports asynchronous communication: be provided with one and send buffer zone, the data that will send are placed on the inside, produce tranmitting data register with timer, in timer interrupt program, read the transmission buffer data, send by turn with displacement mode.The data that CC2430 utilizes serial ports reception data only need read in the send buffer just can realize.The I/O mouth P2.7 that utilizes MSP430 is sent to wireless communication module as data line with data on flows.Upload flow monitoring data to PC by wireless communication module through serial ports again and further handle and analyze, thereby the realization data on flows is monitored in real time.

(3) technique effect

A kind of intelligent flow monitoring wireless sensor network end device is a kind of flow monitoring equipment that merges field state-of-the-art technologies such as sensor technology, electronic technology, instrument and meter, wireless communication technology; The utility model adopts wired and wireless mixed communication mode; Have that portability, cost are low, easy to maintenance, robotization, intelligent degree advantages of higher; Be highly suitable for the piping flow monitoring management of enterprises such as oil, chemical industry, iron and steel, water treatment; Need not to use a large amount of human resources to make an inspection tour, check meter and overhaul; Have a significant effect for promoting automatic management level, saving manpower and fund, have higher practical applications and be worth and market popularization value, very wide application prospect is arranged.

Four, description of drawings:

Below in conjunction with accompanying drawing the utility model is further specified.

Fig. 1 is the utility model theory diagram

Fig. 2 is the utility model schematic diagram

Fig. 3 is the utility model ZigBee wireless communication module schematic diagram

Five, embodiment

An embodiment to the utility model is described further below in conjunction with accompanying drawing:

With reference to Fig. 1, Fig. 1 representes the utility model theory diagram.Main through data collecting module collected information, by flow converter the information of gathering is sent to wireless communication module, realize wireless messages data acquisition and transmission.

With reference to Fig. 2, Fig. 2 representes the utility model schematic diagram.The flow data collector module adopts magnetic position sensor (HMC1501) to realize.Through surveying the magnet relative motion of vicinity angular displacement status.When fixing HMC1501 directed, magnet can convert to ± and 45 °, so it can realize flow data collector through the angle of magnet movement.The core of flow converter is the MSP430 single-chip microcomputer, and it mainly changes into voltage signal through a magnetic position sensor with the anglec of rotation of magnet,, voltage signal is amplified input single-chip microcomputer MSP430 through operational amplifier.Single-chip microcomputer is through A/D conversion, and the simulating signal of voltage is changed into digital signal, at last through carrying out liquid crystal display, and wireless data transmission.Key circuit mainly utilizes the I/O port of MSP430 single-chip microcomputer to expand.Whether key circuit is realized catching button and is pressed through scanning.When button was pressed, the level of I/O mouth was 0 by 1 saltus step, confirmed that button presses; When button unclamped, pull-up resistor was drawn high the level of I/O mouth, and level is 1 by 0 saltus step.The LCD liquid crystal display is through the HT1621 drive controlling.Its display interface circuit mainly contains: data line (DATA), write signal line (WR), chip select line (CS), power lead (VDD) and ground wire (GND).Wherein, CS is used for initialization serial ports circuit and stops communicating by letter between the flow variator; The WR line is to write the clock input, promptly writes clock sync signal.

With reference to Fig. 3, Fig. 3 representes the utility model terminal ZigBee wireless communication module schematic diagram.The utility model wireless communication module is based on 2.4GHz radio frequency chip CC2430.This chip has been integrated ZigBee RF front end, internal memory, microcontroller.Its principal feature is following: the 8051 microcontrollers nuclear of high-performance and low-power consumption; The integrated RF XCVR that meets the 2.4GHz of IEEE 802.15.4 standard; Good wireless receiving sensitivity and powerful anti-interference; Only the stream of 0.9 μ A consumes when park mode, outside interruption or RTC (real-time clock) waken system, and the stream that when standby mode, is less than 0.6 μ A consumes, outside interruption ability waken system; Hardware supports CSMA/CA (have and detect the carrier sense multichannel access of impacting) function; The voltage range of broad (2.0V～3.6V); Digitized RSSI (receiving the signal intensity indication)/LQI (link-quality indication) supports and powerful DMA (direct memory access (DMA)) function; Have battery detection and temperature sensing function; Integrated 14 ADC (A/D converter); Integrated AES (Advanced Encryption Standard) security coprocessor; The USART (universal asynchronous synchronous transceiver) that has 2 powerful several groups of agreements of support, and 1 MAC (media interviews control) layer timer that meets IEEE 802.15.4 standard, 16 bit timers of 1 routine and 28 bit timers; 21 programmable I/O pins; P0, P1 mouth are complete 8 mouths; The P2 mouth has only 5 can use the position; Can these pins be used as common I/O mouth or as the peripherals mouth that connects parts such as ADC, timer, USART by position and the byte of one group of SFR of software set (special register).Radio receiving transmitting module receives the data on flows of the I/O mouth P2.7 of single-chip microcomputer MSP430 through asynchronous communication means.

Claims (3)

1. intelligent flow monitoring wireless sensor network end device; It is characterized in that: the terminal mainly is made up of flow converter (1), data acquisition module (2), human-computer interaction module (3), ZigBee radio receiving transmitting module (4) and power module (5); Flow converter (1) links to each other with data acquisition module (2), collect the data that will handle; Man-machine Switching Module (3) links to each other with the mode of flow converter (1) through bus; ZigBee radio receiving transmitting module (4) links to each other with flow converter (1), realizes the radio transmission-receiving function of data message; Flow converter in the end device (1), data acquisition module (2), man-machine Switching Module (3), ZigBee radio receiving transmitting module (4) all links to each other with power module (5), and power module (5) provides WV for whole device.

2. a kind of intelligent flow monitoring wireless sensor network end device according to claim 1; It is characterized in that: flow converter (1) adopts the MSP420F4250 single-chip microcomputer; Data acquisition module (2) adopts magnetic potential sensor HMC1501 to gather data on flows, and the LCD LCDs in the human-computer interaction module (3) shows the flow monitoring data; LM385-1.2 provides the reference voltage of 1.2V, and reference voltage is exaggerated into the burning voltage of 4.8V through operational amplifier; 4.8V voltage is through voltage stabilizing diode, obtaining 2.8V voltage is that flow converter module (1) provides supply voltage.

3. a kind of intelligent flow monitoring wireless sensor network end device according to claim 1; It is characterized in that: employed ZigBee radio receiving transmitting module (4) adopts radio frequency chip CC2430; Use the Z-Stack protocol stack to build the ZigBee network; Follow the 802.15.4 agreement, adopt international free 2.4GHZ frequency range communication.

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