CN103454942A

CN103454942A - Raindrop sensor node module with positioning function

Info

Publication number: CN103454942A
Application number: CN 201210176710
Authority: CN
Inventors: 吴兴利; 田立国; 李猛; 陈志亮
Original assignee: Tianjin University of Technology
Current assignee: Tianjin University of Technology
Priority date: 2012-05-31
Filing date: 2012-05-31
Publication date: 2013-12-18

Abstract

A raindrop sensor node module with a positioning function is used for detecting whether liquids such as water and raindrops exists or not on object surfaces and applicable to automatic door and window control of unmanned machine rooms, hotels and high-rises, various goods yards and the like. The node module comprises an ATmega8L controller (1), a raindrop detecting and collecting circuit (2), a GPS (global positioning system) positioning module (3), a communication interface connector (4) and a power supply module (5). By the aid of raindrop sensors, the GPS positioning module and a single-chip microcomputer, automatic door and window control of various places can be achieved. The node module is simple in structure, low in cost, easy to popularize, and the like.

Description

Raindrop sensor node module with positioning function

Technical field

The present invention relates to a kind of node module of the Raindrop sensor with positioning function, whether the body surface that adopts specifically 8 8-digit microcontrollers, SSM-002 type Raindrop sensor and GPS locating module to detect under accurate locus has the liquid such as water, raindrop, with the automatic control in the door and window of the machine room of realizing unattended duty, hotel high building and various goods yards etc.

Background technology

Along with the widespread use with internet and mobile radio communication that develops rapidly of information acquisition and Intelligent Computation Technology, technology of Internet of things has obtained application in fields such as industry, agricultural, service sector, environmental protection, traffic.Sensor technology is the basis of Internet of Things, Internet of Things will rely on sensor as data input pin, by various sensor collections or obtain natural various physical quantity, chemical quantity, biomass etc., thereby improve intramundane perception, realize intelligentized decision-making and control.

When GPS (Global Positioning System) is the satellite survey, the english abbreviation of range-finding navigation/GPS (Navigation Satellite Timing And Ranging/Global Positioning System), be called for short " GPS ".This system is to take satellite as basic radio-navigation positioning system, there is navigation, location and the function regularly of totipotency (land, ocean, aerospace), global, round-the-clock, continuity and real-time, can provide accurate three-dimensional coordinate, speed and the time for all types of user.GPS equipment can provide spatial positional information accurately, and the GPS technology is combined with sensor technology, technology of Internet of things, synchronously obtains spatial positional information obtaining the information that sensor exports, thereby is conducive to the popularization of technology of Internet of things simultaneously.

Wireless sensor network technology is as a gordian technique in Internet of Things, the information of various environment or monitoring target in Real-Time Monitoring, perception and collection network overlay area synergistically, and it is processed, information exchange after processing is crossed wireless mode and is sent, and sends the observer to the network mode of certainly organizing multi-hop.A kind of as in wireless sensor network technology of ZigBee technology, have the characteristics such as cost is low, low in energy consumption, network capacity is large, data transmission is reliable, is of wide application.

Summary of the invention

Technical matters to be solved by this invention is, provide a kind of with low cost, simple in structure, be easy to the node module of the Raindrop sensor with positioning function of promoting.

The technical solution adopted in the present invention is: a kind of node module of the Raindrop sensor with positioning function, there is controller, and also comprise that the raindrop that are connected with controller detect Acquisition Circuit; With controller, be connected for the GPS locating module of accurate locus is provided; With controller, be connected for carrying out the communication interface connector of data transmission and Function Extension.

Whether described raindrop detect Acquisition Circuit and are connected with an ADC interface of controller, for measuring the change in voltage caused due to the Raindrop sensor resistance variations, thereby according to change in voltage judgment object surface, have the liquid such as water, raindrop to exist.

Described GPS locating module is connected with the I/O mouth of controller, adopts the simulative serial port sequential to receive the coordinate information of GPS locating module output.

Described communication interface connector is connected with the I/O mouth with the serial ports of controller, for the transmission of data or be connected and carry out the expansion of function with the ZigBee node plate, forms a node in wireless sensor network.

The accompanying drawing explanation

Fig. 1 is entire block diagram of the present invention;

Fig. 2 is that raindrop of the present invention detect Acquisition Circuit and controller connection layout;

Fig. 3 is GPS locating module circuit theory diagrams of the present invention;

Fig. 4 is the present invention's 50 pin communication interface connector schematic diagrams;

Fig. 5 is power circuit principle figure of the present invention.

Embodiment

Below in conjunction with accompanying drawing and example, the invention will be further described.

Raindrop sensor with positioning function node module of the present invention, whether the body surface that adopts SSM-002 type Raindrop sensor, GPS locating module and 8 8-digit microcontrollers to detect under accurate locus has the liquid such as water, raindrop, with the automatic control in the door and window of the machine room of realizing unattended duty, hotel high building and various goods yards etc.

As shown in Figure 1, the node module of the Raindrop sensor with positioning function of the present invention, have controller (1), also comprises that the raindrop that are connected with controller detect Acquisition Circuit (2); With controller, be connected for the GPS locating module (3) of accurate locus is provided; The connector of the communication interface for data transmission and Function Extension (4) be connected with controller; Detect with controller, raindrop the power circuit (5) for power supply is provided that Acquisition Circuit is connected.

As shown in Figure 2, raindrop detect Acquisition Circuit and are comprised of SSM-002 type Raindrop sensor, this Raindrop sensor is equivalent to a variable resistor, with an ADC interface of controller, be connected, thereby whether the judgment object surface has the liquid such as water, raindrop to exist by the change in voltage at survey sensor two ends.

As shown in Figure 3, the GPS locating module adopts global positioning satellite receiving chip Gstar series GS-89 to form, connected by the I/O mouth of controller, adopts the simulative serial port sequential to complete the reception of gps coordinate information.

As shown in Figure 4, Raindrop sensor with positioning function node module of the present invention has the communication interface connector of 50 pins, with the serial ports of controller, with the I/O mouth, be connected, transmission or the connected expansion of carrying out function of ZigBee node plate for data, form a node in wireless sensor network.

As shown in Figure 5, the node module of the Raindrop sensor with positioning function of the present invention is owing to adopting battery or two kinds of modes of externally fed that power supply is provided, therefore switched by switch, the BL8530-3.3V chip that boosts carries out power supply for to powered battery the time and boosts; AMS1117-3.3V lowering and stabilizing blood pressure chip carries out step-down and the voltage stabilizing of power supply while being used for externally fed.

Claims

1. the node module of the Raindrop sensor with positioning function, have controller (1), it is characterized in that, also comprises that the raindrop that are connected with controller (1) detect Acquisition Circuit (2); The GPS locating module (3) be connected with controller (1); The communication interface connector (4) be connected with controller (1).

2. the node module of the Raindrop sensor with positioning function according to claim 1, it is characterized in that: described raindrop detect Acquisition Circuit (2) and are connected with an ADC mouth of controller (1), for measuring the change in voltage caused due to the Raindrop sensor resistance variations.

3. the node module of the Raindrop sensor with positioning function according to claim 1, it is characterized in that: described GPS locating module (3) is connected with the I/O mouth of controller (1), adopts the simulative serial port sequential to receive the coordinate information of GPS locating module output.

4. the node module of the Raindrop sensor with positioning function according to claim 1, it is characterized in that: described communication interface connector (4) is connected with the I/O mouth with the serial ports of controller (1), for transmission and the Function Extension of data.