CN202486543U

CN202486543U - Raindrop sensor node module

Info

Publication number: CN202486543U
Application number: CN201120486880XU
Authority: CN
Inventors: 吴兴利; 田立国; 李猛; 刘玉超; 连刘雷
Original assignee: Tianjin University of Technology
Current assignee: Tianjin University of Technology
Priority date: 2011-11-30
Filing date: 2011-11-30
Publication date: 2012-10-10
Anticipated expiration: 2021-11-30

Abstract

The utility model relates to a raindrop sensor node module which can detect whether or not the surface of an object has water, raindrops, or other liquids. The raindrop sensor node module can be used for the automatic control of unmanned machine rooms, hotel doors and windows, and various goods yards. The node module includes an ATmega8L controller (1), an SSM-002 type raindrop sensor (2), a communication interface connector (3), and a power supply circuit (4). The raindrop sensor node module uses the raindrop sensor and a one-chip microcomputer to realize the door and window automatic control in various places, and the raindrop sensor node module has the characteristics of simple structure, low cost, and easy popularization.

Description

The Raindrop sensor node module

Technical field

The utility model relates to a kind of Raindrop sensor node module; Adopt 8 8-digit microcontrollers and SSM-002 type Raindrop sensor to come the inspected object surface whether liquid such as water, raindrop are arranged specifically, 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 of information acquisition and intelligence computation technology rapid development and internet and mobile radio communication, 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; Through various sensor acquisition or obtain natural various physical quantity, chemistry amount, biomass etc., thereby raising realizes intelligentized decision-making and control to intramundane perception.

Wireless sensor network technology is as a gordian technique in the Internet of Things; The information of various environment or monitoring target in monitoring in real time synergistically, perception and the collection network overlay area; And it is handled; Information after the processing is sent through wireless mode, and sends the observer to the network mode of organizing multi-hop certainly.A kind of as in the wireless sensor network technology of ZigBee technology has characteristics such as cost is low, low in energy consumption, network capacity is big, data transmission is reliable, is of wide application.

Summary of the invention

The utility model technical matters to be solved is, a kind of with low cost, simple in structure, Raindrop sensor node module of being easy to promote is provided.

The technical scheme that the utility model adopted is: a kind of Raindrop sensor node module, have controller, and also comprise the SSM-002 type Raindrop sensor that links to each other with controller; The communication interface connector that links to each other with controller.

Whether described SSM-002 type Raindrop sensor links to each other with an ADC mouth of controller, is used to measure the change in voltage that causes owing to the Raindrop sensor resistance variations, thereby have liquid such as water, raindrop to exist according to change in voltage judgment object surface.

Described communication interface connector links to each other with the I/O mouth with the serial ports of controller, and the transmission that is used for data perhaps links to each other with the ZigBee gusset plate and carries out function expansion, forms a node in the wireless sensor network.

Description of drawings

Fig. 1 is the entire block diagram of the utility model;

Fig. 2 is the utility model sensor detection circuit and controller connection layout;

Fig. 3 is the utility model 50 pin communication interface connector schematic diagrams;

Fig. 4 is the power circuit principle figure of the utility model.

Embodiment

Below in conjunction with accompanying drawing and instance the utility model is described further.

The Raindrop sensor node module of the utility model; Adopt SSM-002 type Raindrop sensor and 8 8-digit microcontrollers to come the inspected object surface whether liquid such as water, raindrop are arranged, with the automatic control in the door and window of the machine room of realization unattended duty, hotel high building and various goods yards etc.

As shown in Figure 1, the Raindrop sensor node module of the utility model has controller (1), also comprises the SSM-002 type Raindrop sensor (2) that links to each other with controller; The communication interface connector (3) that links to each other with controller; The power circuit that is used to provide power supply (4) that links to each other with controller, SSM-002 type Raindrop sensor.

As shown in Figure 2; The raindrop testing circuit is made up of SSM-002 type Raindrop sensor; This Raindrop sensor is equivalent to a variable resistor, link to each other with an ADC mouth of controller, thereby whether the judgment object surface has liquid such as water, raindrop to exist through the change in voltage at survey sensor two ends.

As shown in Figure 3; The Raindrop sensor node module of the utility model has the communication interface connector of 50 pins; Link to each other with the I/O mouth with the serial ports of controller, the transmission that is used for data perhaps links to each other with the ZigBee gusset plate and carries out function expansion, forms a node in the wireless sensor network.

As shown in Figure 4, the Raindrop sensor node module of the utility model is owing to adopt battery or the externally fed dual mode provides power supply, so switch through switch, BL8530-3.3V boosts and carries out power supply when chip is used for powered battery and boost; AMS1117-3.3V lowering and stabilizing blood pressure chip carries out the step-down and the voltage stabilizing of power supply when being used for externally fed.

Claims

1. a Raindrop sensor node module has controller (1), it is characterized in that, also comprises the SSM-002 type Raindrop sensor (2) that links to each other with controller (1); The communication interface connector (3) that links to each other with controller (1).

2. Raindrop sensor node module according to claim 1 is characterized in that: described SSM-002 type Raindrop sensor (2) links to each other with an ADC mouth of controller (1), is used to measure because the change in voltage that the Raindrop sensor resistance variations causes.

3. Raindrop sensor node module according to claim 1 is characterized in that: described communication interface connector (3) links to each other with the I/O mouth with the serial ports of controller (1), and the transmission that is used for data perhaps links to each other with the ZigBee gusset plate and carries out function expansion.