CN201417502Y

CN201417502Y - wireless sensor network rainfall node module

Info

Publication number: CN201417502Y
Application number: CN2009200395250U
Authority: CN
Inventors: 严锡君; 李红娜; 龚行梁; 陈飞; 朱杰; 马文; 李亚东
Original assignee: Hohai University HHU
Current assignee: Hohai University HHU
Priority date: 2009-04-15
Filing date: 2009-04-15
Publication date: 2010-03-03
Anticipated expiration: 2019-04-15

Abstract

The utility model discloses a wireless sensor network rainfall node module in the electronic measurement and control filed. The wireless sensor network rainfall node module comprises a power circuit,an interface circuit, an SCM circuit and a radio frequency circuit, wherein the output end of the power circuit is respectively connected with the power input ends of the interface circuit, the SCM circuit and the radio frequency circuit, the signal output end of the interface circuit is connected with the signal input end of the SCM circuit, the signal input end and the signal output end of the SCM circuit are respectively connected with the signal input end and the signal output end of the radio frequency circuit, the interface circuit consists of a flip-latch and a phase inverter, the SCM circuit is a microcontroller, and the radio frequency circuit consists of a radio frequency chip. The wireless sensor network rainfall node module replaces the wire connection with the wireless transmission, is supplied with electric energy with dry batteries, solves the problem of traditional power supply, has excellent expansibility and simple installation, and saves the cost.

Description

Wireless sensor network rainfall node module

Technical field

The utility model relates to a kind of wireless sensor network rainfall node module, belongs to the electronic measurement and control field.

Background technology

In irrigated area automated system, automatic water regime measuring system, flood prevention or control decision support system (DSS) and gate supervisory system, need to measure in real time and report hydrologic regime data such as rainfall to information center, collect and handle for information center, for the flood control flood prevention or control, prevent and reduce natural disasters provide accurately, the data of science.

At present, the collection of rainfall data and the collection of waterlevel data are finished together by survey station equipment, generally use the mode of rainfall/gaging station, commonly used have rainfall/gaging station and rainfall/two kinds of survey stations of pair gaging station, adopt wired mode that survey station is connected with level sensor, in case the water level monitoring circuit breaks down, will influence observing and predicting of rainfall.Because the survey station great majority away from Administrative Area, are inconvenient to use AC-powered, therefore adopt the power supply of solar cell and chargeable storage usually.The enough ideals of enough big, the sunlit situation of capacity of this method of supplying power to requirement accumulator, if run into long-time rainy weather, accumulator just possibly can't provide enough electric energy to survey station, rain sensor also can't obtain the measurement that enough electric energy carry out hydrologic regime datas such as normal rainfall, thereby increased the workload of safeguarding, improved the cost of measuring.

Summary of the invention

The utility model proposes a kind of wireless sensor network rainfall node module for information transmission and the powerup issue that solves traditional rain sensor.

A kind of wireless sensor network rainfall node module, comprise power circuit, interface circuit, single chip circuit and radio circuit, wherein: the output terminal of power circuit is the connection interface circuit respectively, the power input of single chip circuit and radio circuit, the signal input of interface circuit, the signal output of output terminal order sheet machine circuit, input end, the signal input of single chip circuit, output terminal connects the signal input part of radio circuit respectively, described interface circuit comprises a latch and a phase inverter, single chip circuit is a microcontroller, and radio circuit comprises a radio frequency chip and a change-over switch.

The utility model designs with wireless sensor network technology, has replaced the wired connection mode with wireless transmission method, need not to lay circuit, and simple installation has good extendability simultaneously; Use dry cell power supply, replaced traditional solar cell and chargeable storage power supply mode, saved maintenance cost.

Description of drawings

Fig. 1 is a structured flowchart of the present utility model.

Fig. 2 is circuit theory diagrams of the present utility model, and 1 is power circuit among the figure; 2 is interface circuit; 3 is single chip circuit; 4 is radio circuit.

Embodiment

As shown in Figure 1, the output terminal of power circuit 1 is the power input of connection interface circuit 2, single chip circuit 3 and radio circuit 4 respectively, the signal input part of the signal output part order sheet machine circuit 3 of interface circuit 2, signal output, input end that the signal input of single chip circuit 3, output terminal connect radio circuit 4 respectively.

The input end of phase inverter U5A (74HC04) among rain sensor DY1090A and Fig. 2 in the interface circuit 2 is connected, the Y1 output terminal of phase inverter U5A is connected with the CLK input end of latch U4 (74HC74), the CD input end of latch U4 and/Q output terminal respectively with single chip circuit 3 in the P1.6 output terminal of microcontroller U3 (C8051F310) be connected with the P1.5 input end, the port P0.0 of microcontroller U3 in the single chip circuit 3, P0.1, P1.0, P1.1, P1.2 and P1.3 respectively with radio circuit 4 in the port DLCK of radio frequency chip U1 (CC1020), DIO, PDI, PDO, PCLK is connected with PSEL, inductance L 5, inductance L 6, capacitor C 14, C15, C16, C17, C18, C19, the LC filter circuit that C20 forms, by resistance R 4, capacitor C 11, C12, the RC filter circuit that C13 forms, by crystal oscillator X1, capacitor C 8, the clock circuit that C9 forms, by resistance R 1, R2, R3, capacitor C 5, C6, the PLL loop filter circuitry that C7 forms, by inductance L 1, the LC filter circuit of the RX path that capacitor C 1 is formed, by inductance L 2, resistance R 5, capacitor C 2, the LC filter circuit of the transmit path that C3 forms, change-over switch U2 (signal: SW-456) with antenna J2 (ATEN), wherein: radio frequency chip U1 is connected with change-over switch by the LC filter circuit of RX path and the LC filter circuit of transmit path, and change-over switch is connected with antenna.

Wireless sensor network rainfall node module of the present utility model uses dry cell power supply, adopts high performance singlechip technology, radio-frequency technique and wireless sensor network technology.Adopt No. 5 rechargeable batteries of 3 joints to produce working power, connect phase inverter U5A and latch U4 composition interface circuit with rain sensor DY1090A, with embedded microcontroller U3 monitoring, collection and processing rainfall signal, and the rainfall data after will handling is exported to radio frequency chip U1; Radio frequency chip U1 sends to regimen aggregation node with waterlevel data with wireless form by change-over switch U2 and antenna J2.

Claims

1, a kind of wireless sensor network rainfall node module, it is characterized in that: comprise power circuit (1), interface circuit (2), single chip circuit (3) and radio circuit (4), wherein: the output terminal of power circuit (1) is connection interface circuit (2) respectively, the power input of single chip circuit (3) and radio circuit (4), the signal input part of the signal output part order sheet machine circuit (3) of interface circuit (2), the signal input of single chip circuit (3), output terminal connects the signal output of radio circuit (4) respectively, input end, described interface circuit (2) comprises a latch (U4) and a phase inverter (U5A), single chip circuit (3) is a microcontroller (U3), and radio circuit (4) comprises a radio frequency chip (U1).

2, wireless sensor network rainfall node module according to claim 1 is characterized in that: described latch (U4) /Q end and CD end hold with P1.5 with the P1.6 end of microcontroller (U3) respectively and be connected.

3, wireless sensor network rainfall node module according to claim 1 is characterized in that: the P0.0 end of described microcontroller (U3), P0.1 end, P1.0 end, P1.1 end, P1.2 end and P1.3 end are connected with DLCK end, DIO end, PDI end, PDO end, PCLK end and the PSEL end of radio frequency chip (U1) respectively.