KR101224400B1 - System and method for the autonomic control by using the wireless sensor network - Google Patents

Abstract

The present invention relates to a system and method for autonomous control using a sensor network, the sensor network comprising a plurality of coordinator nodes, control nodes and sensor nodes around an anchor node, wherein the control node, at least among the plurality of nodes; A communication unit capable of wireless communication with one node; A node information unit for identifying the nodes and collecting spatial arrangement information of the nodes; A target input unit configured to receive or input at least one control target condition; A sensing information processing unit classifying similar sensor nodes by distance or direction from the control node and calculating difference values of sensing values received by the same sensor nodes; And a controller configured to perform a sub-operation of at least one adjacent control node by comparing the difference between the sensed values with a reference value of the control target.
According to the present invention, it is possible to autonomously determine by the means for processing the sensor node sensed values and to process the dependent operation control command, and only the selected area requiring environmental control is limited and efficient among the large total spatial areas in which the sensor network is installed. Can be controlled.

Description

Autonomous control system and method using wireless sensor network {SYSTEM AND METHOD FOR THE AUTONOMIC CONTROL BY USING THE WIRELESS SENSOR NETWORK}

The present invention relates to an autonomous control system and method using a sensor network, and more particularly, to an autonomous control system and method using a wireless sensor network that any selected control node can cascade at least one control node adjacent thereto. It is about.

Various technologies using wireless sensor networks have been introduced, and many researches and developments have been made in various forms in control systems using sensor networks.

In the sensor network location recognition technology, a technical means for finding the location of a node by triangulation is obtained by obtaining a distance from an anchor node that knows the location of the node in order to determine the location of the node in the wireless sensor network. have. The distance between nodes may be measured by a time of arrival (TOA), a time difference of arrival (TDoA), and a received signal strength (RSS) method. In addition, many advanced node location techniques are disclosed and may be used by other technicians for various purposes.

In another attempt, a control technology means having a sensor node and an integrated control server and identifying a user located in an adjustment area to perform indoor microclimate adjustment in an adjustment area corresponding to the user is disclosed. However, for the differentiated control means, it is inconvenient in that advance information on individual users must be registered in the database first.

Introducing another aspect of the sensor network control system, there is an increasing demand for configuring various sensors and various types of control devices together in a wireless network, and at the same time, it is possible to selectively There is a need for control means that can be used by the user more conveniently than the prior art to implement a control environment or to achieve more complex control objectives in the field.

It is an object of the present invention to provide an autonomous control system and method using a sensor network for autonomous determination by means for processing sensor node sensed values and for processing dependent operation control commands.

In addition, another object of the present invention is to provide an autonomous control system and method using a sensor network that allows limited and efficient control of only a selected area requiring environmental control from a large total spatial area in which a sensor network is installed.

A first aspect of the present invention for solving the above problems is a sensor network composed of a plurality of coordinator nodes, control nodes and sensor nodes around an anchor node, the control node, at least one of the plurality of nodes A communication unit capable of wireless communication with a node; A node information unit for identifying the nodes and collecting spatial arrangement information of the nodes; A target input unit configured to receive or input at least one control target condition; A sensing information processing unit classifying similar sensor nodes by distance or direction from the control node and calculating difference values of sensing values received by the same sensor nodes; And a controller configured to perform a sub-operation of at least one adjacent control node by comparing the difference between the sensed values with a reference value of the control target.

The node information unit may collect spatial arrangement information of the nodes by direction and distance based on the control node or the anchor node, and the target input unit selects the control node selected as the control target input. It is preferable to receive or input the limited control target target area including the identifiers of the sensor nodes adjacent to and.

Preferably, the control target condition may be at least one of a control target region condition, a control target material condition, and a control device driving condition, and the sensing information processing unit may include spatial arrangement information of the sensor nodes of the node information unit. It may be to calculate and record the spatial contour of the detection value in correspondence with the detection values received from the sensor nodes.

The control unit may set a control node which directly receives the control target as a master control node, and set at least one adjacent control node as a slave control node to generate an operation command signal and generate the slave node. It is preferable to transmit to a control node, and it is preferable that the control unit generates an operation state signal of the master control node or slave control node.

The apparatus may further include a status display unit configured to receive the generated operation state signal and display an operation state of at least one of the master control node and the slave control node. The master-slave control node connection structure is a continuous chain structure consisting of a two-stage connection structure of one master control node and multiple slave control nodes or a connection structure of one master control node and one control node. Preferably, the sensor unit further comprises a sensor unit for connecting at least one physical quantity measuring sensor.

According to a second aspect of the present invention, there is provided a method for autonomous control using a wireless sensor network, comprising: a sensor network including a plurality of coordinator nodes, control nodes, and sensor nodes centering on an anchor node, wherein (a) any control node is a target input unit; Receiving or inputting a control target through the control node and operating a control device connected to the control unit; (b) collecting spatial arrangement information of all the nodes in the node information unit of the control node; (c) detecting, by the sensing information processing unit of the control node, classifying sensor nodes of the same type, and calculating difference values between detection values of adjacent sensor nodes among the same type of sensor nodes; And (d) determining whether the control node of the control node can perform a subordinate operation of at least one adjacent control node by comparing the difference between the sensed values with the control target reference value, and transmitting an operation start or stop command. It includes.

In this case, the step (c) may include calculating physical quantity slope information corresponding to the spatial arrangement information by using the calculated difference between the detected values, and the step (d) may include: Calculating, by the controller, the total amount of energy that can be provided in the control process of the control device, and determining whether the control target can be achieved; If not achievable, searching for adjacent control nodes of the control node; And selecting at least one of the searched control nodes and transmitting an operation start or stop command signal.

Also, preferably, the control process may be a PID control process.

According to the present invention, in the autonomous control system using the wireless sensor network, two or more control nodes are combined with the sensor network, and any host control node is connected to another control node in a dependent control node manner by autonomous determination. By operating, there is an effect that a user can operate a plurality of control devices simply and conveniently as necessary.

There is an effect that it is possible to efficiently control only the limited control target region by the plurality of control node operating means or to save the total amount of energy to be used for the control.

In addition, by changing the total amount of energy of the control device organically to improve the speed and accuracy of the control there is an effect that can easily respond to the environmental control situation of the site.

1 is a hierarchical structure diagram of nodes of a wireless sensor network applied to an embodiment according to the present invention;
2 is a detailed block diagram of a control node according to another embodiment of the present invention;
3 is a spatial layout diagram of all wireless nodes in a wireless sensor network according to another embodiment of the present invention,
4 is a flowchart of a method for autonomous control using a wireless sensor network according to an embodiment of the present invention;
5 is a detailed flowchart for calculating detection values between sensor nodes in an autonomous control method using a wireless sensor network according to an embodiment of the present invention;
6 is a detailed flowchart for determining and processing dependent operations of an adjacent control node in an autonomous control method using a wireless sensor network according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and how to accomplish it, will be described with reference to the embodiments described in detail below with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein but may be embodied in other forms. The embodiments are provided so that those skilled in the art can easily carry out the technical idea of the present invention to those skilled in the art.

In the drawings, embodiments of the present invention are not limited to the specific forms shown and are exaggerated for clarity. In addition, parts denoted by the same reference numerals throughout the specification represent the same components.

The expression "and / or" is used herein to mean including at least one of the components listed before and after. In addition, the singular also includes the plural unless specifically stated otherwise in the text. Also, components, steps, operations and elements referred to in the specification as " comprises "or" comprising " refer to the presence or addition of one or more other components, steps, operations, elements, and / or devices.

Hereinafter, an autonomous control system and method using a wireless sensor network according to an embodiment of the present invention will be described in detail with reference to the drawings.

1 is a hierarchical structure diagram for each node of a wireless sensor network according to an embodiment of the present invention. Referring to FIG. 1, a wireless sensor network includes coordinator nodes 110 capable of wirelessly communicating with an anchor node 100 and sensor nodes as lower nodes. Fields 120 and control nodes 200.

An anchor node 100 that knows the position of the node, a coordinator node 110 capable of relaying a short range communication signal to a farther distance, and various sensor devices and wireless devices (or wireless communication devices) selected by a user's request are combined. Sensor node 120 and the control node 200 described in the present invention. In addition, it may be configured by additionally connecting the server system for the purpose of control by the request of the sensor network.

In addition to the above-described configuration of the wireless sensor network, various known methods such as star mesh clusters may be used in combination. In addition, the sensor node 120 includes at least one sensor capable of measuring a physical quantity such as temperature, humidity, illumination, infrared gas, ultrasonic, etc., and is manufactured by combining a sensor device and a wireless device including the sensor component.

In addition, as a general technology for wireless communication, a low power consumption and low installation cost may be used Zigbee (zigbee) technology, Bluetooth (Bluetooth) technology or equivalent communication technology means can be used. The hardware of the anchor node and the coordinator node may be configured to include a Zigbee communication device, and the Zigbee communication device may include a central control unit (CPU) and a storage device for supporting wireless communication.

2 is a detailed block diagram of a control node according to an embodiment of the present invention. Referring to FIG. 2, the control node 200 includes a communication unit 210, a wireless antenna 211, a node information unit 220, a target input unit 230, a sensing information processing unit 240, and a control unit 250. At least one control device 260 may be directly connected to the outside of the control node 200. If necessary, the sensor unit 270 and the status display unit 280 may be additionally connected to the outside of the control node 200.

The control node hardware configuration of FIG. 2 may be manufactured by combining a field-programmable gate array (FPGA) chip and a chip for wireless communication into main components. Specifically, computer technology means including a central processing unit (CPU) and a memory memory device may be embedded in the FPI semiconductor chip, and input / output devices for various user environments may be selectively configured. Although the configuration of the hardware devices is not separately indicated, the CPU and the storage devices are naturally used for the data processing of the present invention. In addition, separate operating systems and application software may be installed in the FFP hardware for user convenience.

The communication unit 210 may wirelessly communicate with at least one node of the plurality of nodes of the wireless sensor network through the wireless antenna 211. Hereinafter, a case in which the Zigbee communication technology is applied as a universal means will be described.

The node information unit 220 may classify the coordinator node 110, the sensor node 120, and the control node 200 using an identification code based on the anchor node, and the sensor node 120 and the control node 200 may be distinguished from each other. In this case, the type of sensor and the type of control device can be distinguished by the identification code method. The node information unit 220 may receive spatial arrangement information of all nodes connected to the wireless sensor network or at least all nodes normally operating from the server system, or may be directly written by the node information unit 220 using a conventional technology.

The spatial arrangement information may be prepared in the form of two-dimensional or three-dimensional rectangular coordinate information, or the relative arrangement information of all nodes based on the anchor node 100 may be prepared in a two-dimensional circular coordinate system or a three-dimensional spherical coordinate system. In order to effectively achieve the object of the present invention, the relative arrangement information of all the nodes may be prepared based on the control node 200 as in the anchor node 100.

In this case, the means for creating spatial arrangement information may be implemented by using the disclosed conventional techniques, and inaccuracies in the distance and direction information between nodes based on the spatial arrangement information may be treated as an error range of the present invention. Therefore, more precise control objectives of the present invention can be achieved by constructing more coordinator nodes 110 and sensor nodes 120 and combining various conventional techniques to improve the accuracy of spatial placement information of all nodes.

The means for creating the spatial arrangement information in the simplest and most accurate way is the anchor node 100, the coordinator node 110 and the sensor node 120 are all installed to have a regular spatial arrangement regularity and at the same time the server system After recording, the node information unit 220 transmits the information to the node information unit 220, and the node information unit 220 separately recognizes and creates only the arrangement information of the control node 200.

The target input unit 230 may receive at least one or more control target conditions directly through an input means of the control node 200 or may receive the target input unit 230 from an external device such as a server system through the communication unit 210.

In detail, the control target condition may include selecting a control target region condition, a control target material condition, and driving conditions for operating the control device 260. The control target region may set only an arbitrarily selected control node 200 itself, or may enlarge or limit the effective control target region by means of additionally selecting and inputting a sensor node identifier adjacent to the selected control node. Therefore, the target input unit 230 achieves the purpose of arbitrarily setting the limited control target region among the entire sensor network target regions.

In addition, the material to be controlled may be a gas such as air or a liquid such as water, and the physical amount to be controlled may be at least one of temperature humidity illuminance infrared gas ultrasonic waves and another physical amount that can be controlled by the prior art. The operating condition of the control device 260 may include, for example, how much temperature the temperature control targets, and whether the control time is a limited time, periodic or continuous operation. Most of the conditions among the above-mentioned selection means may be simply operated as the basic setting means for the convenience of the user.

In order to configure a hardware device for the target input unit 230, a wired / wireless input / output device may be configured to select among keyboard, mouse, and touch screen display screens, and a remote controller or a server system may be used for remote input.

The sensing information processing unit 240 classifies at least two sensor nodes having a control target from the target input unit 230 and at least two or more sensor nodes having a spatial distance into the same type of sensor group, and detects the sensing values transmitted from the sensor nodes. After receiving, the difference value between the sensing values of the same kind of two adjacent sensor nodes is calculated. In addition, the detection difference values between all adjacent sensor nodes can be calculated and the spatial contour of the detection value can be created and recorded using the spatial arrangement information of the node information unit.

The controller 250 sets the control node 200 that receives the control target directly from the target input unit 230 as a master control node, and spaces arrangement of other control nodes of the node information unit based on the control node 200. Collects information, compares the deviation of the sensed value of each direction by the sensing information processing unit with the control target reference value in the target input unit, determines whether to operate at least one adjacent control node in a dependent manner, and generates and transmits an operation command signal. can do.

Therefore, when the operation command signal is received from the adjacent control node through the communication unit, the slave control node may directly receive and process the data from the control unit. The operation command may be an operation start command or an operation stop command or a more detailed operation state command signal.

The controller 250 may directly connect at least one control device 260 in a 1: 1 correspondence, and may connect a plurality of control devices 260 to achieve a complicated control purpose. When a plurality of control devices are connected, the connection relationship may be stored and used in the internal memory in advance so that the controller may determine and operate the control device 260 corresponding to the type of sensor node.

In addition, the control unit may directly connect the sensor unit 270 in order to detect the control state of the control node 200 most quickly and accurately, and the state display unit 280 for displaying the operation state of the control node 200. It can also be connected to or built into an external device.

The control operation of the controller may simply be on / off control, for example, a complex control such as a temperature profile, and in the case of profile control, PID control (proportionalal derivative). It is possible to achieve the control objectives using control means or another conventional control means.

In particular, in the case of profile control, when the control node 200 does not have sufficient energy output to reach the final control target value, it is necessary to further include the energy output of the adjacent control node 200 and the control unit is autonomous. In response to the determination, the command for processing the adjacent control node may be processed.

In addition, even if the control node 200 has sufficient energy output to reach the final target value, if the time to reach the steady state condition target is not fast, adjacent control nodes may be used to achieve the control target quickly and accurately. Their control device 260 can be autonomously controlled using a sensor network for the purpose of using the operation as an additional energy source.

In addition, when the control unit 250 of FIG. 2 transmits / receives a command signal for a control operation with an adjacent control node through a sensor network, the control node 200 for transmitting the operation command signal is displayed as a master operation. In this case, each control unit may generate a signal capable of displaying a control node receiving the signal in a slave operation.

The controller of the slave control node may operate a control device connected to the slave control node according to an operation command of the master control node. In addition, the master-slave control node connection structure may be a two-stage structure of one master node and a plurality of slave nodes, and the 1: 1 master-slave connection may be a continuous structure like a chain. .

In particular, in the case of a loop structure, two means consisting of means for transmitting an operation command to a neighboring control node as a master control node and means for operating a control device connected to the node as a slave control node are processed in parallel. Or may be processed sequentially.

In addition, when the operation command from the target input unit 230 and the subordinate operation command signal from the adjacent master control node are generated and collide with each other, the processing state of the present invention is partially changed according to the priority rule. It can also be limited to

The controller 260 may be a heating device or a cooling device when the temperature control is described as an example, and may include the two devices together. Similarly, assuming humidity control, it can be a humidifier or a dryer. Alternatively, in order to achieve a control environment such as temperature and humidity indirectly by using a passage of the air conditioning system, the control device may be a device for controlling the entrance and exit of the air conditioning system passage.

The sensor unit 270 includes all sensors capable of measuring various physical quantities such as a temperature sensor and a humidity sensor. In the case of the temperature sensor, various methods such as a contactless type can be used.

The state display unit 280 is a state in which the control node 200 is a master operation to achieve the control target directly input through the target input unit 230, or whether the control node 200 is a subordinate operation according to an operation command of an adjacent control node. You can simply display the bay on the outside. In detail, the control node may indicate that the control node is dependent on the command of a control node. In addition, for the purpose of displaying the control target region, sensor node information belonging to the control target region may be represented by a separate display method. The display method may use an LED lamp or a display device.

Therefore, the control node 200 for autonomous control using the wireless sensor network of the present invention does not control all of the control target areas by means by which the master control node can autonomously select and operate the slave control node. It is possible to effectively control the partial area, and to operate the partial target area by simply operating the control node belonging to the controlled area, rather than the inconvenience of having to use various operating conditions in advance after the user registers various operating conditions in the server system. It is characterized by usage that can be completed conveniently.

In addition, the present invention provides a means for saving energy when it is sufficient to control only the local area according to the user's needs, rather than to control all the wide control target areas uniformly.

3 is a spatial layout diagram of all wireless nodes in a wireless sensor network according to another embodiment of the present invention.

Referring to FIG. 3, a door 301, one anchor node 100, a plurality of coordinator nodes 110, 111, 112, and 113, and a plurality of sensor nodes 120 to 132 are located in a wall 300 of the closed space 300. The control nodes 201, 202, 203, and 204 are shown in a fixed position. However, in order to build a more accurate control environment, a plurality of sensor nodes and coordinator nodes may be installed so that spatial positions are regularly arranged.

In FIG. 3, an area in which the coordinator node 110 is allowed to receive a radio signal is indicated by a dotted line area 110a, and the receivable areas of the other coordinator nodes 111, 112, and 113 are dotted lines 111a, 112a, and 113a, respectively. Indicated. Separate identification means can be applied so that information about all modes in the restricted closed space can be shared together.

Referring to the operation of the control node according to an embodiment of the present invention.

When the control target is input through the target input unit of the control node 203, the control device connected to the control node is operated and at the same time, the detection values from the adjacent sensor nodes are calculated and based on the control node 203, The control node 202 may autonomously determine whether to operate dependently, and if necessary, transmit an operation command signal to the control node 202, and process other control nodes 201 and 204 sequentially. Can be.

In detail, the adjacent control node located in the selectable direction and distance can be determined and dependently operated using the spatial contour of the detection value created using the sensor node detection values with respect to the master control node.

4 is a flowchart of a method for autonomous control using a wireless sensor network according to an embodiment of the present invention. Referring to FIG. 4, in step S500, the controller 250 operates the control device 260 to achieve a control target input through the target input unit 230 of an arbitrary control node 200.

In step S510, the node information unit 220 creates spatial arrangement information of the entire sensor network or all of the operable nodes. The detailed method for preparing node arrangement information is as described in the node information unit of FIG. 2. In particular, for efficient control of the present invention, the spatial arrangement information of the sensor nodes can be prepared for each direction based on the master control node and used to determine the operation of the slave control node.

In operation S520, the sensing information processor 240 classifies the sensor nodes of the same type to at least two or more sensor nodes, and detects the difference between the sensing values between adjacent sensor nodes by using the sensing values of the nodes classified as the same sensor node. You can calculate and record the physical quantity slope. In addition, the sensing information processing unit not only calculates a difference of sensed values between adjacent sensor nodes, but also a physical quantity in the spatial domain in the sensor network by matching the difference values of the calculated sensed values with sensor node space arrangement information of the node information unit. Contours (for example, temperature) can be created.

In operation S530, the controller 250 determines whether an additional control apparatus is needed by using information on the spatial change of the physical quantity measured from the sensor node in operation S520 based on the control target input in operation S500. It generates and transmits an operation start command or operation stop command signal for operating the control device connected to the control node.

The determination for cascading the adjacent control nodes may be made based on a change in the total amount of energy for controlling the target physical quantity, or a change in the amount of energy for quickly and accurately reaching the target physical quantity. In other words, if the amount of available energy source in PID control is sufficient, it is possible to achieve a precise and accurate control goal.However, if there is not enough energy for control, it is difficult to achieve the control goal. There may be inconveniences that must be added separately.

Therefore, according to the exemplary embodiment of the present invention of FIG. 4, a means for easily selecting and extending the total amount of the control energy source required by using the control devices connected to the plurality of control nodes is provided.

FIG. 5 is a detailed flowchart for calculating detection values between sensor nodes in an autonomous control method using a wireless sensor network according to an embodiment of the present invention. Referring to FIG. 5, the operation S520 of FIG. 4 will be described in detail again. In operation S521, the sensing information processing unit 240 classifies at least two or more various sensor nodes into the same types, and the node information unit 220 includes the same. The sensor nodes adjacent to the control node are searched and classified using the collected information of all collected sensor nodes, and the sensor nodes are searched and classified according to the concentric direction of the cylindrical coordinate system based on the control node center point.

In operation S522, the sensing information processor 240 receives all of the same time zone sensing values corresponding to the sensor nodes classified in operation S521, and calculates all of the difference between the sensing values between the proximity sensor nodes.

In operation S523, the sensing information processing unit 240 receives all of the same time zone detection values corresponding to the sensor nodes classified in operation S521, and calculates all differences between the detection values of the sensor nodes for each radiation direction of the control node. .

6 is a detailed flowchart for determining and processing dependent operations of an adjacent control node in an autonomous control method using a wireless sensor network according to an embodiment of the present invention. Referring to FIG. 6, the step S530 performed after sequentially performing steps S500, S510, and S520 of FIG. 4 will be described in detail. In step S531, the controller 250 may include a target input unit (S500). Calculate and judge the total amount of energy that can be provided based on the control target input through 230), or determine whether the control target can be achieved using the control result of the control device for a predetermined time, and if the expected result is "Yes" Perform the steps and exit.

In step S532, if the determination result of step S531 is "no", the neighboring control node is searched using the collection information of the node information unit. In step S533, a control node that most closely matches the control target among the neighbor nodes found in step S532 is selected based on proximity or direction information, and an operation start command or a stop command is transmitted to the selected control node.

In step S534, the control device connected to the slave control node starts or stops the operation. Then, the process returns to step S520 and the above steps can be repeated.

While the invention has been shown and described with respect to the specific embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. Anyone with it will know easily.

100: anchor node, 110: coordinator node, 120: sensor node, 200: control node
210: communication unit, 220: node information unit, 230: target input unit, 240: detection information processing unit
250: control unit, 260: control unit, 270: sensor unit, 280: status display unit

Claims (14)

In the sensor network composed of a plurality of coordinator node, control node and sensor node around the anchor node,
The control node may include a communication unit capable of wirelessly communicating with at least one node of the plurality of nodes;
A node information unit for identifying the nodes and collecting spatial arrangement information of the nodes;
A target input unit configured to receive or input at least one control target condition;
A sensing information processing unit classifying similar sensor nodes by distance or direction from the control node and calculating difference values of sensing values received by the same sensor nodes;
And a controller configured to perform a sub-operation of at least one neighboring control node by comparing the difference between the sensed values with a reference value of the control target.
The method of claim 1,
The node information unit collects spatial arrangement information of each of the nodes by direction and distance based on any one of the control node or the anchor node.
The method of claim 1,
And the target input unit receives or inputs a limited control target target area including identification symbols of sensor nodes adjacent to the control node selected as the control target input.
The method of claim 3,
The control target condition is at least one of a control target region condition, a control target material condition, and a control device driving condition.
The method of claim 1,
The sensing information processor calculates and records a spatial contour line of a sensing value by matching spatial arrangement information of the sensor nodes of the node information unit with the sensing values received from the sensor nodes. system.
The method of claim 1,
The control unit sets a control node that directly receives the control target as a master control node, and sets at least one adjacent control node as a slave control node to generate an operation command signal and generate the slave control node. Autonomous control system using a wireless sensor network, characterized in that for transmitting to.
The method according to claim 6,
And the control unit generates an operation state signal of the master control node or the slave control node.
The method of claim 7, wherein
Receiving the generated operation status signal using a wireless sensor network, characterized in that it further comprises a status display unit for displaying the operation state of at least one of the master control node and the slave (slave) control node. Autonomous control system.
The method according to claim 6,
The connection structure of the master control node and the slave control node may include a two-stage connection structure of one master control node and a plurality of subordinate control nodes or a connection structure of one master control node and one control node. Autonomous control system using a wireless sensor network, characterized in that the continuous chain (chain) structure.
The method of claim 1,
Autonomous control system using a wireless sensor network, characterized in that further comprising a sensor unit for connecting the control unit and at least one physical quantity measurement sensor.
In the sensor network composed of a plurality of coordinator node, control node and sensor node around the anchor node,
(a) any control node receives or receives a control target through a target input unit and operates a control device connected to the control unit by the control node;
(b) collecting spatial arrangement information of all the nodes in the node information unit of the control node;
(c) detecting, by the sensing information processing unit of the control node, classifying sensor nodes of the same type, and calculating difference values between detection values of adjacent sensor nodes among the same type of sensor nodes; And
(d) the control unit of the control node compares the difference between the detected values with the control target reference value to determine whether the at least one neighboring control node can be operated in a slave operation, and transmits an operation start or stop command. Autonomous control method using a wireless sensor network comprising a.
The method of claim 11,
The step (c)
And calculating physical quantity gradient information corresponding to the spatial arrangement information by using the calculated difference values of the sensed values.
The method of claim 11,
In the step (d), the control unit calculates the total amount of energy that can be provided in the control process of the control device, and determines whether the control target can be achieved;
If not achievable, searching for adjacent control nodes of the control node; And
Selecting at least one of the searched control nodes and transmitting an operation start or stop command signal.
The method of claim 13,
The control process is an autonomous control method using a wireless sensor network, characterized in that the PID control process.

Images