KR100629682B1 - Method for enhancing energy consumption efficiency of wireless sensor network - Google Patents

Method for enhancing energy consumption efficiency of wireless sensor network Download PDF

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KR100629682B1
KR100629682B1 KR1020040001859A KR20040001859A KR100629682B1 KR 100629682 B1 KR100629682 B1 KR 100629682B1 KR 1020040001859 A KR1020040001859 A KR 1020040001859A KR 20040001859 A KR20040001859 A KR 20040001859A KR 100629682 B1 KR100629682 B1 KR 100629682B1
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South Korea
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event
energy consumption
sensor
data collection
consumption efficiency
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KR1020040001859A
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Korean (ko)
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KR20050073780A (en
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김대환
박우출
유준재
이상학
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전자부품연구원
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    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47GHOUSEHOLD OR TABLE EQUIPMENT
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Abstract

The present invention relates to a method for improving energy consumption efficiency of a wireless sensor network, and more particularly, to a method for improving energy consumption efficiency of a wireless sensor network using a situation recognition control method in a data collection pointer.
The method of improving energy consumption efficiency of the wireless sensor network of the present invention includes the steps of: (a) detecting occurrence of an event at a sensor node; (b) the sensor node transmitting event data on the generated event to a data collection device; (c) identifying an event in a sensor node area in the data collection device; (d) transmitting the event data transmission prohibition message to the sensor nodes by the data collection device, and (e) prohibiting the transmission of event data of the sensor nodes that have received the event data transmission prohibition message. have.
Accordingly, the present invention utilizes the computing resources of the data collection device to improve the energy consumption efficiency of the sensor nodes in the wireless sensor network, thereby reducing unnecessary data transmission with the sensor nodes in a manner of delivering a message to the sensor nodes. It has the effect of improving the energy consumption efficiency of the node.
Wireless Sensor Networks, Energy Efficiency, Ubiquitous Computing, Wireless Communications

Description

Method for enhancing energy consumption efficiency of wireless sensor network             

1 is an overall configuration diagram of a sensor network according to the present invention.

2 is a state diagram of energy consumption in transmission, reception, and standby states by the number of sensor nodes.

3 is a flowchart illustrating an energy state awareness message transmission according to the present invention.

4 is a configuration diagram in which a sensor node transmits data to a data collection device when a sensing event occurs according to the present invention.

5 is a configuration diagram for transmitting a data transmission prohibition message to the sensor nodes in the data collection device according to the present invention.

Figure 6 is a graph comparing the efficiency of the energy consumption of the proposed method and the conventional method.

7 is a graph comparing the efficiency of energy consumption between the method proposed by the present invention and the conventional method when the event occurrence interval is 0.3 seconds.

         <Description of the symbols for the main parts of the drawings>

100: sensor node 110: data acquisition device

120: sensing event 130: sensing event recognition area of the sensor node

The present invention relates to a method for improving energy consumption efficiency of a wireless sensor network, and more particularly, to a method for improving energy consumption efficiency of a wireless sensor network using a situation recognition control method in a data collection pointer.

Most of the recently produced electronic devices have a chip called a microcontroller. In other words, electronics become smarter and they communicate with each other on their own. This phenomenon makes it clear that human beings have been subordinated to computers in the meantime, and that the age of information processing without computer recognition is coming due to the development of technology. This trend requires more intelligent devices, making wireless more effective than wired.

Recent advances in wireless communications and microelectronics technology have enabled a network of low-cost, ultra-small sensors. The sensor network is a ubiquitous wireless network because of its wide range of applications such as environmental control in intelligent buildings, automatic control of production processes, warehouse logistics management, goods / information management in hospitals, remote sensing of patient status, intelligent transportation systems, and telematics. Active research is underway at the core.

The MIT Institute of Microsystems is also working on micro adaptive multi-domain power aware sensors (AMPS), an adaptive sensor network platform for minimizing power consumption. The research on the sensor network can be divided into physical layer, data link layer, network layer, transmission layer, application layer, etc. like the existing wireless communication, but high density characteristics, limited power source, and extreme propagation environment of sensor network, etc. Considering this, new technologies are being developed.

In the age of ubiquitous computing, sensor network technology is very important for situational awareness of physical spaces. The emergence of sensor network technology is due to the development of low power, ultra small and ultra low cost computing devices. Nodes in the sensor network are characterized by a lack of memory resources, low power wireless communication, and the presence of several types of sensors. The most important feature of the sensor network is that nodes are inexpensive, and it is more efficient to replace them with other nodes than to replace the battery, so the energy efficiency of the nodes is very important.

The sensor nodes are composed of a sensing part, a central processing unit (CPU) part, a radio frequency (RF) part, a memory part, and the like of the sensor. The most energy-consuming field is RF, which is related to transmitting and receiving data. That is, the core of the sensor network technology is an efficient wireless communication networking technology.

Miniaturization, intelligence, and wireless are the technology development trends that follow the demands of the sensor market. Intelligence is evolving into a smart sensor that greatly improves sensor functionality by combining with computer technology. Miniaturization is being improved with recent advances in nanotechnology, in particular, MEMS (Micro Electro Mechanical System) technology. MEMS here refers to integrated circuit components and systems that combine electrical components with mechanical components.

The sensor network consists of sensor nodes and a data collection device. The data collection device has better computing performance and sufficient energy resources than sensor nodes. The role of sensor nodes senses through sensors and communicates data with other nodes. In other words, sensor nodes act as routers and transmit data to other nodes.

In a typical sensor network service, 65% of all packets received by a node are sent to other nodes. The time ratio related to wireless communication of sensor nodes when a serious network traffic congestion occurs in the sensor network may be a ratio of 1: 3: 40 for standby: receive: transmit. In addition, the relative energy consumption of standby: receive: transmit in wireless communications is measured from 1: 1.05: 1.4 to 1: 2: 2.5.

In the state where duty cycle is assumed to be 1, energy consumption is greatest due to the standby condition during wireless communication, and energy consumption is most affected by the transmission situation when the duty cycle is 10%. In a typical sensor network situation, a smaller duty cycle results in greater delays and lower energy consumption.

The most important element of the sensor network-related technology is low power consumption technology, which requires not only the development of a long-lasting small power source but also an innovative system architecture of software / hardware. However, the prior art as described above has a problem that the energy consumption efficiency is not high.

Accordingly, the present invention provides a method of improving energy consumption efficiency of sensor nodes by prohibiting unnecessary data transmission between sensor nodes by using abundant computing resources of a data collection device to improve energy efficiency of sensor nodes in a wireless sensor network. There is an object of the invention.

The above object of the present invention comprises the steps of (a) detecting the occurrence of an event at the sensor node; (b) the sensor node transmitting event data on the generated event to a data collection device; (c) identifying an event in a sensor node area in the data collection device; (d) transmitting, by the data collection device, an event data transmission prohibition message to sensor nodes; and (e) prohibiting transmission of event data by sensor nodes receiving the event data transmission prohibition message. It is achieved by the method of improving the energy consumption efficiency of the network.

The present invention is a method for energy use efficiency of sensor nodes which is the most important technical element of a wireless sensor network. The research on the energy consumption efficiency of sensor nodes has been actively studied in various fields such as physical layer, medium access control (MAC), network layer (routing), and application layer. The present invention relates to an improvement in energy consumption efficiency using message transmission according to service characteristics in an application layer among the layers.

In order to improve the energy consumption efficiency of the sensor nodes, the present invention utilizes abundant computing resources of the data collection device, and uses a method of prohibiting data transmission between unnecessary nodes by transmitting a message to the sensor nodes.

Details of the above object and technical configuration of the present invention and the effects thereof according to the present invention will be more clearly understood by the following detailed description with reference to the drawings showing preferred embodiments of the present invention.

1 shows an overall configuration diagram of a sensor network. As shown in FIG. 1, the sensor node 100 is a small chip that can communicate with itself and can exchange information using a frequency. The sensing event 120 is a situation that occurs around the sensor node 100. The sensing signal sensing region 130 is an area of the surrounding sensor nodes where the sensing event 120 occurs, and when the sensor nodes 100 recognize the sensing event 120, the event data is transmitted to the data collection device 110. do.

2 is a graph showing the energy consumption of each of the transmission 150, reception 160, standby 170 according to the number of sensor nodes. As shown in FIG. 2, the energy consumption is greatest in the data transmission 150 mode, followed by the reception 160 mode. In addition, it can be seen that the energy consumption is the lowest in the standby mode 170.

3 is a flowchart illustrating an energy state awareness message transmission according to the present invention. For example, when a sound occurs in a sensor node (S200), the sound sensor detects the situation, that is, an event, and transmits data to the data collection device (S210). The data collection device receives an event occurring at a node (S220) and grasps an event of a sensor node region. If the event of the sensor node area is not detected, the data is retransmitted to the data collection device and repeated operations are performed (S210 to S230). If the event of the sensor node area is identified and continuously receives the data of the same event, the data collection device sends a transmission prohibition message to the sensor nodes (S240).

Each sensor node receiving the transmission prohibition message does not transmit the message any more when there is no other type of event (S250) (S260), and when another type of event occurs, retransmits the data to the data collection device. Perform repeat operation (S210 ~ S250).

4 is a configuration diagram in which a sensor node transmits data to a data collection device when a sensing event occurs. As shown in FIG. 4, the sensing event 120, 25 sensor nodes 100, and one data collection device 110 are configured, and the sensing event 120 is generated so that the sensor is in the sensing recognition radius region. Nodes 100 become aware of the event. The sensor nodes 100 generate a sensing event 120 to transmit data, and all the data enters the data collection device 110. The data collection device 110 may be connected to the Internet network to access the data collection device 110 from the outside to recognize events occurring in the sensor network.

FIG. 5 illustrates a data transmission prohibition message sent to sensor nodes in a data collection device. As shown in FIG. 5, when the event is recognized with respect to the sensing event 120 generated by the data collecting device 110 and it is determined that the same data is continuously transmitted, a message is transmitted to the sensor nodes 100. To indicate unnecessary events.

Figure 6 is a graph comparing the efficiency of the energy consumption of the proposed method and the conventional method. As shown in FIG. 6, the energy consumption efficiency 500 of the present invention and the conventional energy consumption efficiency 510 are compared. As the sensor node increases, the difference in energy consumption increases, so that the energy consumption efficiency 500 of the present invention is superior to the conventional energy consumption efficiency 510.

7 is a graph comparing the efficiency of the energy consumption of the scheme 600 and the conventional scheme 610 proposed by the present invention with respect to the case where the event occurrence interval is 0.3 seconds. As shown in FIG. 7, when an event occurrence interval is reduced to 0.3 second, an event frequently occurs in a sensor node. In this case, since energy transmission and reception of energy event data are increased compared to FIG. 6, energy consumption of sensor nodes is further increased. Even in this case, it can be seen that the energy consumption 600 according to the present invention is superior to the conventional method 610.

Although the present invention has been shown and described with reference to the preferred embodiments as described above, it is not limited to the above embodiments and those skilled in the art without departing from the spirit of the present invention. Various changes and modifications will be possible.

Accordingly, the present invention utilizes the computing resources of the data collection device to improve the energy consumption efficiency of the sensor nodes in the wireless sensor network, thereby reducing unnecessary data transmission with the sensor nodes in a manner of delivering a message to the sensor nodes. It has the effect of improving the energy consumption efficiency of the node.

Claims (4)

  1. (a) detecting the occurrence of an event at the sensor node;
    (b) the sensor node transmitting event data on the generated event to a data collection device;
    (c) identifying an event in a sensor node area in the data collection device;
    (d) the data collecting device transmitting an event data transmission prohibition message to sensor nodes; And
    (e) prohibiting event data transmission of the sensor nodes that have received the event data transmission prohibition message;
    Method for improving the energy consumption of the wireless sensor network, characterized in that comprises a.
  2. The method of claim 1,
    The data collection device transmits a data transmission prohibition message to sensor nodes to reduce unnecessary data transmission between the sensor nodes.
  3. The method of claim 1,
    The data collection device is a method for improving energy consumption of a wireless sensor network, characterized in that accessible from the outside through the Internet network.
  4. The method of claim 1,
    The event, event data and event data transmission prohibition message is generated according to the type of event, characterized in that the energy consumption efficiency of the wireless sensor network.
KR1020040001859A 2004-01-10 2004-01-10 Method for enhancing energy consumption efficiency of wireless sensor network KR100629682B1 (en)

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
KR100908731B1 (en) * 2007-10-22 2009-07-22 엘아이지넥스원 주식회사 Ubiquitous Sensor Network System and PIA Identification Method Using the Same

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KR100789910B1 (en) 2005-12-01 2008-01-02 한국전자통신연구원 Method for the management of dormant nodes in wireless sensor network
KR100881273B1 (en) 2006-12-08 2009-02-05 한국전자통신연구원 Sensor node and its operating method
KR100823644B1 (en) * 2007-03-23 2008-04-21 고려대학교 산학협력단 Method and system for in-network processing of skyline queries with filter
KR100861329B1 (en) * 2007-04-06 2008-10-01 한국과학기술원 Context monitoring device supporting context monitoring and method of context monitoring
KR101657092B1 (en) 2015-04-13 2016-09-13 (주)파란전자 Controller sharing supply voltage lines and communication lines

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100908731B1 (en) * 2007-10-22 2009-07-22 엘아이지넥스원 주식회사 Ubiquitous Sensor Network System and PIA Identification Method Using the Same

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