KR20120058280A - Wireless sensor network system using energy scavenging - Google Patents

Abstract

PURPOSE: A wireless sensor network system including energy scavenging technology is provided to reduce maintenance costs and to improve the utilization of a system by utilizing dual-energy scavenging technology. CONSTITUTION: A gateway(60) transmits data measured by a sensor node. A dual energy scavenging system uses solar power and wind power. A monitoring program(90) provides the measured data to a user. The data is measured and transmitted by utilizing a wireless sensor network. The dual energy scavenging system monitors and provides energy by using the solar and the wind power.

Description

Wireless sensor network system using energy scavenging technology

The present invention relates to a system for monitoring measurement data acquired from intelligent home enclosures and various sensors to which energy scavenging technology is applied, and energy scavenging to smoothly supply its own power using solar and wind power. The present invention relates to a system for solving a power supply problem by constructing a technology and sensor network and incorporating small and light sensor nodes and gateway technologies.

In recent years, various types of low power industrial sensors and controllers have been converted to alternative energy sources as the primary or auxiliary means for power supply. The secured energy does not require power wiring or a battery, and is gradually approaching a power device capable of permanently driving the devices by receiving electrical energy from a physical energy source generated from light or kinetic energy.

In addition, remote monitoring of the environment in the sensor network requires a large number of nodes, requiring reliability, scalability, and long lifespan. As such, it is important for nodes to achieve high power efficiency for independent, maintenance-free operation.

Such energy harvesting techniques have been studied for many years, but the application of the system in a real environment is very difficult, complex, and costly. Recently, due to the limitations of the existing battery technology in the wireless sensor network system, research is being actively conducted to provide power in an environment using energy acquisition technology.

The technology of supplying energy such as solar and kinetic energy directly to wireless sensor loads or rechargeable batteries or capacitors is becoming smaller and lighter.

 As such, the goal is to develop an integrated intelligent enclosure that has the capacity to supply or harvest energy in the environment and to withstand harsh environmental conditions. In addition, it is necessary to develop a sensor node that is active in changing environment due to processing power and mobility for node failure, and capable of collecting and transmitting data capable of a low power multihop network topology.

In addition, large scale unmanned operation is possible, and the cost required for maintenance can be greatly reduced.

The present invention is to design and develop an effective energy scavenging system in the absence of specialized technology for the design of analog switch mode power supply for energy scavenging and smart enclosure development. This system can extract energy from almost any natural energy source. In addition, comprehensive functionality and convenient design make it possible to design difficult power conversion of energy scavenging.

In addition, the present invention is compact, simple and easy to use anytime, anywhere installation and maintenance free to develop a high degree of integration of energy scavenging system including power management control and standard external enclosure We want to provide a system solution.

It is a green energy technology that can be supplied with permanent power by using renewable natural energy sources as a source of alternative energy sources, and there is no generation of waste batteries and carbon dioxide.

This not only reduces the cost incurred by replacing and maintaining the power supply medium, but also increases the reliability of the wireless sensor network. In particular, wireless sensor networks using ultra low power technology require very little power, so there is no difficulty in applying energy scavenging technology.

This invention, various sensor nodes; A gateway for transmitting measured data from the sensor node; Dual energy scavenging system using solar and wind power; And it provides a wireless sensor network system applying the energy scavenging technology, including a monitoring program for showing the measurement data to the user.

At this time, the wireless sensor network system is characterized by data measurement and transmission using the wireless sensor network.

In this case, the wireless sensor network system is characterized by energy supply and monitoring through a dual energy scavenging system using solar and wind power.

The wireless sensor network system applying the energy scavenging technology of the present invention as described above, the long-term operation of the system is possible by using the sensor network system using the dual energy scavenging technology using solar and wind as alternative energy sources of the surroundings. The cost savings are high due to the high utilization of the system and easy installation and maintenance.

1 is a block diagram showing the configuration of an entire system according to the present invention;
2 is a configuration diagram of the middleware software in FIG.
3 is a flowchart of an operation of the middleware block diagram shown in FIG. 2;
Figure 4 is an intelligent home enclosure configuration diagram applying the energy scavenging technology according to the present invention.

Hereinafter, a wireless sensor network system using energy scavenging technology according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing the configuration of an entire system according to the present invention. Referring to FIG. 1, the external environment information is measured through the sensor 10, processed through the first signal processing device 20, and then transmitted to the first gateway module 50 through the wireless transmission device 30. The first gateway module 50 receives the data through the wireless receiving device 70 and then transfers the second gateway module 50 through the second signal processing device 60 of the first gateway module 50. Sends data to the specified integrated server 80 through.

The sensor 10 includes a temperature sensor, a humidity sensor, and a wind speed sensor in order to sense external environmental information.

The first signal processing apparatus 20 performs a function of processing analog data sensed by the sensor 10 into digital data.

The radio receiver 70 performs a function of receiving the digital data processed by the first signal processor 20 from the radio transmitter 30 and transmitting the digital data to the second signal processor 20.

As the communication between the radio receiver 70 and the radio transmitter 30, RF, Bluetooth, and Infrared Data Association (IrDA) communication are used. Of course, the present invention shows only wireless communication, but wired communication is also possible. In this case, RS232, RS422, and RS485 communication methods may be used.

The second signal processing apparatus 20 processes the data received from the first signal processing apparatus 20 to generate measurement data relating to an external environment that is raw data. The binary measurement data uses an XML (eXtensible MarkUp Language) format, but is not limited thereto, and may also include formats such as HDML (Handheld Device Markup Language) and HTML (Hyper Text Markup Language). A schematic and procedure diagram of generating raw metrology data is shown in FIGS. 2 and 3. 2 and 3 will be described later.

The power supply device 40 generates power using wind power or solar cells using natural forces such as wind power and solar power, and supplies the generated electricity to each of the components 10, 20, 30, 50, 60, and 70. Therefore, operation is possible without using an external power supply.

The communication between the integrated server 80 and the second gate module 50 uses wireless communication. In this case, the wireless communication method is Zigbee, Bluetooth. Infrared Data Association (IrDA), Wireless LAN (IEEE802.11), Shared Wireless Access Protocol (SWAP), Wireless Broadband (Wibro), Wireless Fidelity (WiFi), High Speed Downlink Packet Access (HSDPA), Wireless Personal Area Networks (WPAN) ), Code Division Multiple Access (CDMA), WCDMA, GSM, and the like.

The integrated server 80 is configured with a monitoring program 90 for parsing and displaying raw measurement data in XML format received through wireless communication on the screen.

FIG. 2 is a diagram illustrating the middleware software of FIG. 1. 2 is a configuration module of the middleware software for the second signal processing device 20 to process data received from the first signal processing device 20 in FIG. 1 to generate raw measurement data about an external environment as raw data. Shows. In other words, the middle signal software is configured in the second signal processing apparatus 20, and for this purpose, the second signal processing apparatus 20 includes a microprocessor and a memory. Of course, the middleware software is installed in this memory or the like and functions to generate data received from the first signal processing apparatus 20 as raw measurement data.

Memory can include non-hard disk drives, flash memory, electrically erasable programmable read-only memory (EEPROM), static RAM (SRAM), ferro-electric RAM (FRAM), phase-change RAM (PRAM), and magnetic RAM (MRAM). Volatile memory and / or volatile memory such as dynamic RAM (DRAM), synchronous dynamic RAM (SDRAM), double data rate SDRAM (DDRSDRAM), or the like.

3 is a flowchart illustrating an operation of the middleware diagram shown in FIG. 2. Referring to Figure 3,

The middleware S / W structure and operation procedure are shown, and the operation procedure is as follows. Raw data delivery and analysis → Conversion procedure from XML translator → Procedure for conversion to bridge to middleware → Conversion to SOAP protocol for web service → Request web service → Web service response → SOAP protocol analysis → XML conversion → Raw data Analysis and transformation → raw data delivery.

Figure 4 is a block diagram of the intelligent home enclosure applying the energy scavenging technology according to the present invention. Referring to Figure 4, by applying the energy scavenging technology to implement an intelligent home enclosure it is possible to design the optimal space configuration for mounting each module efficiently used.

The present invention configured as described above can more effectively install and operate the system through data measurement through various sensors, wireless data transmission and reception through the sensor network, and permanent energy supply using solar and wind energy. It works.

In addition, power is supplied to sensor nodes and gateways to collect energy sources from the surrounding environment and can be operated independently, and in order to form a stable network, prolonging the lifespan and solving power problems simultaneously with higher energy savings. Can be.

10 sensor 20 first signal processing device
30: wireless transmission device 40: power supply device
50: gateway module 60: second signal processing device (gateway)
70: wireless receiver 80: server
90: monitoring program

Claims (3)

Various sensor nodes;
A gateway for transmitting measured data from the sensor node;
Dual energy scavenging system using solar and wind power; And
Monitoring program to show measurement data to user
Wireless sensor network system applying the energy scavenging technology comprising a.
The method of claim 1,
Wireless sensor network system applying energy scavenging technology that features data measurement and transmission using wireless sensor network.
The method of claim 1,
Wireless sensor network system with energy scavenging technology that enables energy supply and monitoring through dual energy scavenging system using solar and wind power.

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