JP2012175334A - Device control apparatus and method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain sufficient control accuracy and responsiveness even when controlling a plurality of control devices arranged over all the target area.SOLUTION: A control value DB 13 is retrieved by a device control value retrieval unit 14D on the basis of a new node determination result obtained by a node determination unit 14C from new sensor results collected by a sensor result collection unit 14A, thereby acquiring a new device control value corresponding to the new node determination result. If the device control value corresponding to the new node determination result is not registered yet, a new device control value corresponding to a similar node determination result similar to the new node determination result is acquired, and a device control signal corresponding to this new device control value is generated by a device control unit 14E and transmitted to control devices 22.

Description

  The present invention relates to a device control technique for controlling each control device based on a sensor result acquired by a sensor network.

  In recent years, a system has been developed that acquires environmental information from a sensor network and accurately estimates a target state, and further controls environmental control devices such as lighting and air conditioning based on the information. For example, a human sensor is connected to the illumination, and the illumination is turned on or off according to the presence or absence of a person.

  As such device control technology, by executing optimization problem calculation processing for sensor results obtained from each sensor node and various conditions when controlling each control device corresponding to each sensor node, There is a technique for calculating a device control value corresponding to the sensor result with high accuracy (see, for example, Patent Document 1). According to this, there is a one-to-one correspondence between the lighting and the human sensor, and the lighting is turned on if the human sensor is ON, and the lighting is turned off if the human sensor is OFF. However, it is possible to perform optimal control over the entire target area in consideration of user comfort.

JP 2007-249647 A

However, such a conventional technique has a problem that it is difficult to obtain sufficient control accuracy and responsiveness when controlling a plurality of control devices arranged in the entire target region.
That is, according to the prior art, it is necessary to execute the optimization problem calculation process for the sensor results collected from each sensor node and the various conditions for controlling each control device corresponding to each sensor node. For this reason, since it is necessary to calculate the device control values for all the control devices arranged in the entire target area, it takes time to calculate them, and sufficient responsiveness cannot be obtained. Further, if the optimization problem calculation process is simplified, the calculation time of the device control value can be shortened, but sufficient control accuracy cannot be obtained.

  The present invention is for solving such a problem, and provides a device control technique capable of obtaining sufficient control accuracy and responsiveness even when controlling a plurality of control devices arranged in the entire target region. The purpose is to do.

  In order to achieve such an object, the device control apparatus according to the present invention collects sensor results indicating whether or not any event detected by these sensor nodes has occurred by performing data communication with a plurality of sensor nodes. A sensor result collecting unit, a device control value calculating unit for calculating a device control value for controlling the control device associated with each sensor node based on the sensor result, and a sensor result On the basis of the sensor node, the sensor node that detected the occurrence of the event is determined as the reaction node, the sensor node that did not detect the occurrence of the event is determined as the non-reaction node, and the non-reaction node is positioned near the reaction node. A node determination unit that determines a sensor node to be a neighboring node, and a device control value of each control device calculated by a device control value calculation unit from an arbitrary sensor result Obtained by the node determination unit from the control value database that stores the node determination result related to each sensor node obtained from the sensor result by the node determination unit in association with each other, and the new sensor result collected by the sensor result collection unit Based on the new node determination result, a new device control value corresponding to the new node determination result is obtained by searching the control value database. If the new device control value is not registered, a new device control value is obtained. A device control value search unit that acquires a similar device control value corresponding to a new similar node determination result similar to the node determination result as a new device control value, and generates a device control signal according to the new device control value A device control unit for transmitting to each control device.

  At this time, if a new device control value is not registered in the device control value calculation unit, a new device control value is calculated from the new sensor result, and added to the control value database in association with the new node determination result. You may make it do.

  In addition, when a new device control value is not registered in the device control value search unit, among the device control values corresponding to the similar node determination result, the device control value related to the reaction node corresponds to the sensor node that detected the event occurrence. It is possible to replace the control device with a regular device control value to be transmitted to the control device, and generate a device control signal corresponding to the device control value after replacement in the device control unit and transmit the device control signal to each control device. .

  In addition, the device control method according to the present invention is a sensor in which a sensor result collection unit collects sensor results indicating presence / absence of an arbitrary event detected by a sensor node by performing data communication with a plurality of sensor nodes. A result collection step and a device control value calculation unit for calculating, for each sensor node, a device control value for controlling a control device associated with each sensor node based on a sensor result. The node determination unit determines, based on the sensor result, a sensor node that has detected the occurrence of an event as a reaction node, determines a sensor node that has not detected the occurrence of an event as a non-reaction node, A node determination step for determining a sensor node located in the vicinity of the reaction node among the reaction nodes as a neighboring node and a control value database are provided. Storing the device control value of each control device calculated in the device control value calculation step from the sensor result and the node determination result regarding each sensor node obtained in the node determination step from the sensor result in association with each other; The device control value search unit searches the control value database based on the new node determination result obtained in the node determination step from the new sensor result collected in the sensor data collection step, thereby obtaining a new node determination result. If the new device control value is not registered, the new device control value corresponding to the new similar node determination result similar to the new node determination result is set to the new device control value. The device control value search step acquired as a control value, and the device control unit generates a device control signal corresponding to the new device control value, and And a device control step of transmitting to.

  At this time, if a new device control value is not registered in the device control value calculation step, a new device control value is calculated from the new sensor result, and added to the control value database in association with the new node determination result. The step of performing may be included.

  Also, if a new device control value is not registered in the device control value search step, among the device control values corresponding to the similar node determination result, the device control value related to the reaction node corresponds to the sensor node that detected the event occurrence. Including a step of replacing with a regular device control value to be transmitted to the control device, and a step of generating a device control signal corresponding to the device control value after replacement and transmitting the device control signal to each control device. It may be included.

  According to the present invention, a new device control value for controlling each control device according to a new sensor result collected from each sensor node is obtained by the search processing of the control value database. For this reason, each time a new sensor result is obtained, a new device control value for smoothly changing the output between neighboring control devices is compared with the case where the optimization problem calculation process is executed. Can be obtained at Therefore, even when a plurality of control devices arranged in the entire target region are controlled, high responsiveness can be obtained.

  In addition, when searching for device control values, the node determination result specifying a neighboring node located in the vicinity of the reaction node where the occurrence of the event is detected is used, so the device control value is searched using the collected sensor results themselves. Compared to the case, the similar device control value can be retrieved with extremely small error. Therefore, even when a plurality of control devices arranged in the entire target area are controlled, high control accuracy can be obtained.

It is a block diagram which shows the structure of the apparatus control apparatus concerning 1st Embodiment. It is a structural example of a control value database. It is explanatory drawing which shows a node determination example. It is a flowchart which shows an apparatus control value calculation process. It is a flowchart which shows an apparatus control process. It is an example of calculating a device control value (with registration). It is an example of calculation of a device control value (no registration). It is a flowchart which shows the apparatus control process concerning 2nd Embodiment. It is a flowchart which shows the apparatus control processing concerning 3rd Embodiment. It is an example of calculation of a device control value (after replacement).

Next, embodiments of the present invention will be described with reference to the drawings.
[First Embodiment]
First, with reference to FIG. 1, the apparatus control apparatus 10 concerning the 1st Embodiment of this invention is demonstrated. FIG. 1 is a block diagram illustrating a configuration of the device control apparatus according to the first embodiment.
The device control apparatus 10 includes an information processing apparatus such as a server device or a PC as a whole, and a control device 22 corresponding to the sensor nodes 21 based on sensor results collected from the sensor nodes 21 constituting the sensor network 20. It has the function to generate | occur | produce the apparatus control signal for controlling this, and to transmit to each sensor node 21. FIG.

  In the present embodiment, the device control value calculation unit that calculates, for each sensor node, a device control value for controlling the control device associated with each sensor node based on the sensor result. Based on the sensor result, among the sensor nodes, the sensor node that detected the occurrence of the event is determined as the reaction node, the sensor node that did not detect the occurrence of the event is determined as the non-reaction node, and the reaction among the non-reaction nodes A node determination unit that determines a sensor node located in the vicinity of the node as a neighboring node, a device control value of each control device calculated by the device control value calculation unit from an arbitrary sensor result, and a node determination unit based on the sensor result A control value database is provided for storing the obtained node determination results for each sensor node in association with each other.

  Then, by searching the control value database based on the new node determination result obtained by the node determination unit from the new sensor result collected by the sensor result collection unit, a new corresponding to the new node determination result is obtained. When a device control value is acquired and a new device control value is not registered, a similar device control value corresponding to a new similar node determination result similar to the new node determination result is acquired as a new device control value. A device control signal corresponding to the new device control value is generated and transmitted to each control device.

[Equipment control device]
Next, with reference to FIG. 1, the structure of the apparatus control apparatus 10 concerning this Embodiment is demonstrated in detail.
The device control apparatus 10 includes, as main functional units, a communication interface unit (hereinafter referred to as a communication I / F unit) 11, a storage unit 12, a control value database (hereinafter referred to as a control value DB) 13, and an arithmetic processing unit 14. Is provided.

  The communication I / F unit 11 is composed of a dedicated wireless communication circuit. Protocols such as a wireless LAN, a specific low power wireless, a weak wireless, ZIGBEE (registered trademark), and BLUETOOTH (registered trademark) are exchanged with the sensor node 21. By using the wireless data communication, a node ID for identifying each sensor node 21, a sensor result detected by each sensor node 21, or a node of another sensor node 21 located in the vicinity of each sensor node 21 It has a function of receiving various data such as an ID from each sensor node 21 and a function of transmitting a device control signal generated by the arithmetic processing unit 14 to each sensor node 21. Note that a wireless access point may be provided outside the device control apparatus 10 instead of the communication I / F unit 11. When these radios are used, the radio communication distance is several meters to several tens of meters.

  The storage unit 12 includes a storage device such as a hard disk or a semiconductor memory, and has a function of storing processing information and programs used for processing executed by the arithmetic processing unit 14. The main processing information stored in the storage unit 12 includes a node ID collected from each sensor node 21, a sensor result, a device control value, a node determination result, a device control signal, and the like.

  The control value DB 13 includes a storage device such as a hard disk or a semiconductor memory, and has a function of storing a set of device control values and node determination results used for processing executed by the arithmetic processing unit 14. The control value DB 13 may be configured as a part of the storage unit 12.

  FIG. 2 is a configuration example of the control value database. Here, for each sensor result collected from each sensor node 21, a device control value to be transmitted to each control device 22 when the sensor result is obtained, and each sensor node when the sensor result is obtained. Node determination results obtained by determining the operation type are registered in association with each other. The device control value and the node determination result are calculated by the arithmetic processing unit 14 and registered in the control value DB 13. Details of the device control value and the node determination result will be described in conjunction with the description of the arithmetic processing unit 14. explain.

The arithmetic processing unit 14 includes a microprocessor such as a CPU and its peripheral circuits, and has a function of realizing various processing units by reading a program from the storage unit 12 and executing it.
As main processing units realized by the arithmetic processing unit 14, there are a sensor result collection unit 14A, a device control value calculation unit 14B, a node determination unit 14C, a device control value search unit 14D, and a device control unit 14E.

  The sensor result collection unit 14A performs data communication with the sensor node 21 via the communication I / F unit 11 to thereby indicate whether or not any event detected by the sensor node 21 has occurred. A function of collecting various data such as a node ID for identifying the sensor ID and a node ID of another sensor node 21 located in the vicinity of each sensor node 21 from each sensor node 21 and storing it in the storage unit 12. ing.

  For example, in the case where the device control apparatus 10 is used as a lighting control system, each sensor node 21 is composed of a human sensor provided in each section, and the control device 22 corresponding to each sensor node 21 performs lighting in each section. In the case of the lighting control device to be controlled, it is notified as a sensor result whether or not there is a person in each section and whether or not an event has occurred.

The device control value calculation unit 14B acquires the sensor result obtained by the sensor result collection unit 14A from the storage unit 12, and controls the control device 22 associated with each sensor node 21 based on the sensor result. Therefore, it has a function of calculating a device control value for each sensor node 21.
In the case of the lighting control system, a device control value indicating the brightness required for the lighting device in each section is calculated according to a sensor result indicating the presence or absence of a person in each section.

  As described above, the device control value is data for controlling the control device 22, but actually, the amount transmitted by the control device 22 to the device to be controlled, for example, brightness for lighting, If it is air conditioning, it may be an amount such as temperature, or it may be electric power that the control device 22 actually controls. In the example of FIG. 2 described above, the device control value is normalized to a range of 0-1.

  The node determination unit 14C has a function of acquiring the sensor result obtained by the sensor result collection unit 14A from the storage unit 12, and determining the operation type of each sensor node 21 based on the sensor result. Specifically, among the sensor nodes 21, a function that determines a sensor node that has detected an event as a reaction node, a function that determines a sensor node that has not detected an event as a non-reaction node, Of these, the sensor node located in the vicinity of the reaction node has a function of determining it as a neighbor node.

FIG. 3 is an explanatory diagram illustrating an example of node determination. Here, it is assumed that ten sensor nodes 21 of N1 to N10 are arranged in a line at equal intervals, and that adjacent sensor nodes 21 are located in the vicinity of each other. It is assumed that an event occurrence is detected only at the sensor nodes N1, N5 and N10.
In this case, when the occurrence of an event is detected as “1” and the absence of an event is detected as “0”, the sensor results obtained by the sensor result collection unit 14A are “1, 0, 0, 0, 1, 0, 0, 0, 0, 1 ".

  Therefore, the node determination unit 14C determines N1, N5, and N10 among these sensor nodes 21 as reaction nodes, and determines the other N2 to N4 and N6 to N9 as non-reaction nodes. Further, the node determination unit 14C determines N2, N4, N6, and N9 located in the vicinity of the reaction nodes 1, N5, and N10 among the non-reaction nodes as neighboring nodes.

  As a result, when the response node is set to “1”, the non-reaction node is set to “0”, and the neighboring node is set to “0.5” as values indicating the node determination result of each sensor node 21, the nodes related to N1 to N10 The determination result is expressed as “1, 0.5, 0, 0.5, 1, 0.5, 0, 0, 0.5, 1”. If any sensor node N among N1 to N10 is a non-reaction node and both sides are reaction nodes, the sensor node N is determined as a neighboring node from the reaction nodes on both sides. The determination result value itself is not added, and a value of “0.5” is assigned to the final determination for the sensor node N.

  The value of the neighboring node is considered to correspond to the weight of how much the neighboring node is considered when searching the control value DB 13. For example, if the value of the neighboring node is set to a small value, it approaches the value of the non-reactive node, so that the degree of consideration of the neighboring node at the time of search is reduced. On the other hand, when the value of the neighboring node is set to a large value, the value of the neighboring node at the time of search increases because the value of the neighboring node is approached. For this reason, the values of neighboring nodes may be determined in advance according to the characteristics of the control target to be applied and the accuracy obtained.

  The device control value search unit 14D has a function of acquiring a new node determination result obtained from the new sensor result collected by the sensor result collection unit 14A from the node determination unit 14C and the new node determination result. A function for acquiring a new device control value corresponding to a new node determination result by searching the control value DB 13 and a new device control value corresponding to the new node determination result are newly registered. And a similar device control value corresponding to a similar node determination result and a function to retrieve and acquire from the control value DB 13 a new device control value as a new device control value.

  The device control unit 14E generates a device control signal corresponding to the new device control value obtained by the device control value search unit 14D, and sends these device control signals from the communication I / F unit 11 to each sensor node 21. And has a function of transmitting to each control device 22. The device control signal is obtained by converting a device control value based on a predetermined formula or format so that it can be easily handled by a sensor node or a control device, or according to a communication protocol.

[Sensor node]
Next, the configuration of the sensor node 21 according to the present embodiment will be described in detail with reference to FIG.
The sensor node 21 is composed of a small wireless device such as an RFID as a whole, and includes a communication interface unit (hereinafter referred to as a communication I / F unit) 21A, a sensor unit 21B, and a device interface unit (hereinafter referred to as a device I) as main functional units. 21C) is provided.

  The communication I / F unit 21A is composed of a dedicated wireless communication circuit, and is connected to another sensor node 21 or the device control apparatus 10 with a wireless LAN, a specific low power wireless, a weak wireless, ZIGBEE (registered trademark), BLUETOOTH ( The function of constructing the sensor network 20 by performing wireless data communication and wireless data transfer with other sensor nodes 21 using a short-range wireless protocol such as registered trademark), the node ID of the own node 21, and the own node 21 A function of transmitting various data such as sensor results detected by the sensor unit 21B or node IDs of other sensor nodes 21 in the vicinity of the own node 21 to the device control apparatus 10 via the sensor network 20, and a sensor network The device control signal from the device control apparatus 10 to the control device 22 of the own node 21 via the device 20 And a function of receiving.

  The sensor unit 21B transmits / receives a node ID to / from another sensor node 21 in the vicinity of the node 21 in addition to a state measurement sensor such as a temperature sensor, a humidity sensor, and a vibration sensor that detects an impact, A node detection sensor such as an infrared sensor or an electromagnetic field sensor for detecting another sensor node is provided. The vicinity position range of the node 21 is determined according to the sensitivity of the node detection sensor.

  That is, each sensor node 21 transmits its own node ID to other sensor nodes 21 and receives other node IDs from other sensor nodes 21. This process may be performed once when the sensor node 21 is placed in a certain environment, but such steps may be periodically performed to recognize nearby sensor nodes. Then, the sensor node 21 transmits its own node ID, the sensor result, and the received ID of the other sensor node to the device control apparatus 10.

  At this time, sensing by the sensor unit 21B may be performed periodically and communicated with the device control device 10 each time. Alternatively, when the sensor unit 21B of any sensor node 21 detects a change in the environment, the sensor result is transmitted to the device control apparatus 10, and the device control apparatus 10 requests sensing to the remaining sensor nodes 21 accordingly. Then, sensor results may be collected from each sensor node 21.

  In this way, the device control apparatus 10 can confirm the other sensor node 21 located in the vicinity of the sensor node 21 based on the other node ID notified from each sensor node 21. Thereby, even when the position of the sensor node 21 is dynamically changed, the latest neighborhood positional relationship between the sensor nodes 21 can be grasped. If the position of the sensor node 21 is fixed to some extent, what sensor node 21 is in the vicinity position may be set in the storage unit 13 in advance. In this case, the sensor node 21 uses another node ID. Need not be detected, and it is not necessary to notify the device control apparatus 10 of this.

  The device I / F unit 21C includes a dedicated interface circuit, and the operation of the control device 22 connected to the own node 21 based on the device control signal from the device control apparatus 10 received by the communication I / F unit 21A. It has a function to control.

[Operation of First Embodiment]
Next, operation | movement of the apparatus control apparatus 10 concerning this Embodiment is demonstrated.
In the control of environmental control devices such as air conditioners and lighting, it is desired to monitor the environment with sensors and control the environmental control device from the viewpoint of energy saving. However, if the environmental control device is controlled from the viewpoint of such energy saving only, it may not necessarily match human sensitivity and comfort.

  For example, when controlling the lighting by detecting the presence of a person, it is desirable from the viewpoint of energy saving to turn off the lighting when there is no person, but it is very unnatural if there is a place where the light suddenly becomes dark. It must be said that it is lighting. It seems to be better for those who are in the room where the brightness changes as naturally as possible.

  Assuming that lighting is used as the control device, the light is usually turned off when there is no person and turned on when there is a person. Here, when the illumination can be adjusted in brightness, that is, when a light control function is used, illumination control that can provide more natural and energy-saving effects can be realized, unlike simple on / off control. Therefore, in such a case, the brightness of a place where a person exists is determined, but how to illuminate a place where there is no person is a problem.

In the present embodiment, it is considered that the evaluation function represented by the following expression (1) is minimized under the conditions of expressions (2) and (3).

In these formulas (1) to (3), f _i is a device control value for a control device corresponding to the sensor node i, and f _j is a control device corresponding to m _i sensor nodes in the vicinity of the sensor node i. This is the device control value. Further, a is a lower limit value of device power consumption of the entire control device 22, and b is an upper limit value of device power consumption of the entire control device 22. In addition, here, for the sake of simplicity, it is assumed that the device control value such as lighting output and the device power consumption are the same, but in reality, a function indicating the relationship between the device control value and the device power consumption. g may be provided separately for conversion.

  Expression (1) is a so-called evaluation function that calculates the square sum of the difference between the device control values of the adjacent control devices 22 as the evaluation value E. Expression (2) is a conditional expression that defines the range of total device power consumption. Expression (3) is a conditional expression that the device control value or power consumption is 0 or more.

Here, equation (2) is the total of the total power consumption, but a place where a person is present usually has to be brightened, so the lower limit is inevitably determined. Therefore, the lower limit is the total power consumption of the devices in the place where the person is determined based on the sensor result, and the upper limit is the preset allowable overall power consumption.
Therefore, obtaining the brightness of the illumination in a place where no person is present means that the spatial smoothness of the brightness, that is, the evaluation value E of the expression (1) is obtained under the conditions of the expressions (2) and (3). That is, the brightness of each illumination to be minimized is calculated.

  That is, each device control value f is 0 or more, and the device of the adjacent sensor node 21 satisfies the condition that the sum is within a certain range, here the range from the lower limit value a to the upper limit value b. A device control value for each control device is obtained so that the sum E of the sums of squares of differences of the control values f is minimized. Such a mathematical problem is called an optimization problem, and since a solution can be obtained by using a calculation method composed of several known computer programs, details thereof will not be described here.

FIG. 4 is a flowchart showing device control value calculation processing.
First, the device control value calculation unit 14B acquires the sensor results collected by the sensor result collection unit 14A from the storage unit 12 (step 100), and acquires a preset upper limit value b from the storage unit 12 ( Step 101).

Subsequently, the device control value calculation unit 14B counts the number of sensor results indicating the occurrence of an event from the sensor results of each sensor node 21, and calculates the lower limit value a from the count result (step 102).
Thereafter, the device control value of each sensor node 21 that minimizes the evaluation value E of Equation (1) under the conditions of Equation (2) and Equation (3) defined by these lower limit value a and upper limit value b. fi is calculated using an optimization problem calculation method (step 103), and a series of device control value calculation processing ends.

Next, a device control operation in the device control apparatus 10 will be described with reference to FIG. FIG. 5 is a flowchart showing the device control process.
The arithmetic processing unit 14 of the device control apparatus 10 periodically executes the device control process of FIG. It is assumed that several sets of node determination results and device control values are registered in the control value DB 13.

First, the sensor result collection unit 14A collects new sensor results from each sensor node 21 (step 110), and the node determination unit 14C determines the operation type of each sensor node based on the sensor results (step 111). ).
Subsequently, the device control value search unit 14D searches the control value DB 13 based on the new node determination result obtained by the node determination unit 14C (step 112).

  If a new device control value corresponding to the new node determination result is found (step 112: YES), the device control unit 14E generates a device control signal corresponding to the new device control value ( In step 113), the communication I / F unit 11 transmits the information to each control device 22 via each sensor node 21 (step 114), and the series of device control processing ends.

  On the other hand, when the device control value corresponding to the new node determination result is not registered in step 112 (step 112: NO), the device control value search unit 14D determines similar node determination similar to the new node determination result. The result is specified, a similar device control value corresponding to the similar node determination result is retrieved and acquired from the control value DB 13 as a new device control value (step 115), and the process proceeds to step 113 described above.

At this time, the device control value search unit 14D calculates the similarity between each registered node determination result registered in the control value DB 13 and the new node determination result, and determines the node determination result with the highest similarity as the similar node. It is specified as a judgment result.
For the similarity, for example, a multidimensional vector whose element is a determination value for each sensor node included in the registered node determination result, and a multidimensional vector whose element is a determination value for each sensor node included in the new node determination result What is necessary is just to calculate using the Euclidean distance between.

[Operation Example of First Embodiment]
Next, an operation example of the device control apparatus 10 according to the present embodiment will be described.
Here, as shown in FIG. 3 described above, ten sensor nodes 21 of N1 to N10 are arranged in series, and adjacent sensor nodes 21 are located in the vicinity of each other. To do. Further, it is assumed that several sets of node determination results and device control values are registered in the control value DB 13.

First, it is assumed that an event occurrence is detected only in sensor nodes N1, N5, and N10 among the sensor nodes 21. In this case, when the occurrence of an event is detected as “1” and the absence of an event is detected as “0”, the sensor results obtained by the sensor result collection unit 14A are “1, 0, 0, 0, 1, 0, 0, 0, 0, 1 ".
As a result, when the reaction node is “1”, the non-reaction node is “0”, and the neighboring node is “0.5” as the determination value indicating the node determination result of each node, the node determination regarding N1 to N10 The result is expressed as “1, 0.5, 0, 0.5, 1, 0.5, 0, 0, 0.5, 1”.

  Here, “1, 0.6, 0.47, 0.6, 1, 0.47, 0.2, 0.2, 0,..., Are stored in the control value DB 13 as device control values corresponding to the node determination result. When “47,1” is registered, a device control signal is generated based on the device control value and transmitted to each control device 22.

On the other hand, it is assumed that the occurrence of an event is detected only in sensor nodes N1, N6, and N10 among the sensor nodes 21. In this case, the sensor result obtained by the sensor result collecting unit 14 </ b> A is expressed as “1,0,0,0,0,1,0,0,0,1”.
Thereby, the node determination result of each node is expressed as “1, 0.5, 0, 0, 0.5, 1, 0.5, 0, 0.5, 1”.

  Here, the device control value corresponding to the node determination result is not registered in the control value DB 13, and “1, 0.5, 0, 0.5, When “1, 0.5, 0, 0, 0.5, 1” is specified, the similar device control value “1, 0.6, 0.47, 0.6, 1” corresponding to the similar node determination result , 0.47, 0.2, 0.2, 0.47, 1 ”is generated and transmitted to each control device 22.

  FIG. 6 is a calculation example of the device control value (with registration). FIG. 7 is a calculation example of the device control value (no registration). In the case of FIG. 7, the device control value corresponding to the node determination result obtained from the sensor result is not registered and is the similar device control value obtained from the similar node determination result. By comparison, it can be seen that almost the same device control values are obtained.

[Effect of the first embodiment]
As described above, in the present embodiment, in the device control apparatus 10, the sensor result collection unit 14 </ b> A performs data communication with the plurality of sensor nodes 21, so that any event detected by the sensor nodes 21 is generated. The device control value calculation unit 14B collects the device control value for controlling the control device 22 associated with each sensor node 21 based on the sensor result, for each sensor node 21. Based on the sensor result, the node determination unit 14C determines that the sensor node that has detected the occurrence of the event is a reaction node, and the sensor node that has not detected the occurrence of the event is the non-reaction node. Among the non-reaction nodes, the sensor node located in the vicinity of the reaction node is determined as a neighborhood node, and an arbitrary sensor is determined in the control value DB 13. The device control value of each control device 22 calculated by the device control value calculation unit 14B from the result and the node determination result regarding each sensor node 21 obtained by the node determination unit 14C from the sensor result are stored in association with each other. It is a thing.

  Then, the device control value search unit 14D searches the control value DB 13 based on the new node determination result obtained by the node determination unit 14C from the new sensor result collected by the sensor result collection unit 14A. When a new device control value corresponding to a new node determination result is acquired and a new device control value corresponding to the new node determination result is not registered, a similar node determination result similar to the new node determination result Is obtained as a new device control value, and the device control unit 14E generates a device control signal corresponding to the new device control value and transmits it to each control device 22. It is.

  Thereby, a new device control value for controlling each control device 22 according to the new sensor result collected from each sensor node 21 is obtained by the search processing of the control value DB 13. For this reason, each time a new sensor result is obtained, the output between the neighboring control devices 22 is compared with the case where the optimization problem calculation process using the above-described equations (1) to (3) is executed. A new device control value for smoothly changing can be obtained in a very short time. Therefore, even when a plurality of control devices arranged in the entire target region are controlled, high responsiveness can be obtained.

  In addition, when searching for device control values, the node determination result specifying a neighboring node located in the vicinity of the reaction node where the occurrence of the event is detected is used, so the device control value is searched using the collected sensor results themselves. Compared to the case, the similar device control value can be retrieved with extremely small error. Therefore, even when a plurality of control devices arranged in the entire target area are controlled, high control accuracy can be obtained.

  In the present embodiment, the control device 22 is connected to each sensor node 21 and the device control signal is transmitted from the device control apparatus 10 to the control device 22 via the sensor node 21 as an example. It is not limited to this connection configuration. For example, the control device 22 is connected to the device control apparatus 10 separately from the sensor node 21 via a predetermined communication network, and the device control signal is directly transmitted from the device control apparatus 10 to the control device 22. Also good.

  Further, in the present embodiment, in order to facilitate understanding, the case where the sensor nodes 21 are arranged one-dimensionally as illustrated in FIG. 3 is described as an example, but the present invention is not limited thereto. It is not something. Even when the sensor nodes 21 are arranged two-dimensionally or three-dimensionally, the present embodiment can be similarly applied.

[Second Embodiment]
Next, with reference to FIG. 8, the apparatus control apparatus 10 concerning the 2nd Embodiment of this invention is demonstrated. FIG. 8 is a flowchart showing the device control processing according to the second embodiment, and the same or equivalent parts as those in FIG. 5 are given the same reference numerals.

In the present embodiment, an update operation of the control value DB 13 will be described.
When the device control value corresponding to the node determination result obtained from the sensor result is not registered, the device control value calculation unit 14B calculates the device control value corresponding to the node determination result and registers it in the control value DB 13. For example, when the same node determination result is collected thereafter, a device control value that matches the node determination result can be searched from the control value DB 13, and high control accuracy can be obtained.

At this time, it takes a processing time to calculate the device control value in the device control value calculation unit 14B. In the present embodiment, when the device control value corresponding to the node determination result obtained from the sensor result is not registered, the device control value is calculated separately from the search for the similar device control value. .
That is, when the device control value corresponding to the new node determination result is not registered, the device control value calculation unit 14B performs the new sensor separately from the similar device control value search in the device control value search unit 14D. A new device control value is calculated from the result and is additionally registered in the control value DB 13 in association with the new node determination result.

  Specifically, in FIG. 8, when the device control value corresponding to the new node determination result is unregistered in step 112 (step 112: NO), the device control value search unit 14D performs the new node determination. A similar node determination result similar to the result is specified, and a similar device control value corresponding to the similar node determination result is retrieved from the control value DB 13 as a new device control value and acquired (step 115).

Subsequently, the device control unit 14E generates a device control signal corresponding to the new device control value (step 200), and transmits the device control signal to each control device 22 from the communication I / F unit 11 via each sensor node 21. (Step 201).
Thereafter, the device control value calculation unit 14B executes the device control value calculation process of FIG. 4 using the above-described equations (1) to (3) based on the new sensor result collected in step 110. Then, a new device control value is calculated (step 202), and the obtained new device control value is additionally registered in the control value DB 13 in association with the new node determination result (step 203).

[Effect of the second embodiment]
Thus, in the present embodiment, when the device control value corresponding to the new node determination result is not registered, the device control value calculation unit 14B calculates a new device control value from the new sensor result, This is additionally registered in the control value DB 13 in association with the new node determination result.
Therefore, it is possible to update the control value DB 13 without delaying the search for the similar device control value using the similar node determination result and the transmission of the device control signal according to the similar device control value.

  Note that the device control value calculation unit 14B may start calculating a new device control value after transmitting a device control signal corresponding to the similar device control value. If the processing capability of the arithmetic processing unit 14 required for processing from the search for similar device control values to the transmission of device control signals can be sufficiently ensured, the device control value corresponding to the new node determination result is obtained in step 112. When it is determined as unregistered, calculation of a new device control value in the device control value calculation unit 14B may be started in parallel with the processing from the search for the similar device control value to the transmission of the device control signal.

[Third Embodiment]
Next, with reference to FIG. 9, the apparatus control apparatus 10 concerning the 3rd Embodiment of this invention is demonstrated. FIG. 9 is a flowchart showing a device control process according to the third embodiment, and the same or equivalent parts as those in FIG. 5 are given the same reference numerals.
In the present embodiment, a case will be described in which a similar device control value searched from the control value DB 13 is corrected when a device control value corresponding to a node determination result obtained from the sensor result is not registered.

As shown in FIG. 7 described above, with respect to the similar device control value, a device control value substantially similar to the new device control value corresponding to the new node determination result shown in FIG. 6 is obtained. However, in the similar device control value, although the sensor node N5 is the reaction node, the device control value does not indicate “1”, which clearly shows that an error is generated.
In the present embodiment, among the similar device control values, the device control value corresponding to the reaction node is replaced with a regular device control value to be transmitted to the control device 22 corresponding to the sensor node 21 that detected the event occurrence. It is what you do.

  That is, when the device control value corresponding to the new node determination result is not registered, the device control value search unit 14D determines the similar device control value corresponding to the reaction node among the device control values corresponding to the similar node determination result. The device control signal is replaced with a regular device control value to be transmitted to the control device 22 corresponding to the sensor node 21 that detected the occurrence of the event, and the device control signal corresponding to the similar device control value after the replacement is transmitted by the device control unit 14E. Is generated and transmitted to each control device 22.

  Specifically, when the device control value corresponding to the new node determination result is not registered in step 112 of FIG. 9 (step 112: NO), the device control value search unit 14D determines that the new node determination result is the new node determination result. A similar node determination result similar to is identified, and a similar device control value corresponding to the similar node determination result is retrieved from the control value DB 13 as a new device control value and acquired (step 115).

  Thereafter, in the device control value search unit 14D, among the device control values corresponding to the similar node determination result, the similar device control value corresponding to the reaction node is transferred to the control device 22 corresponding to the sensor node 21 that detected the occurrence of the event. On the other hand, it is replaced with a regular device control value to be transmitted (step 300), and the process proceeds to step 113.

  FIG. 10 is a calculation example of the device control value (after replacement). Here, compared with the similar device control value of FIG. 7, the device control value of the sensor node N5 is a regular device control value to be transmitted to the control device 22 corresponding to the sensor node 21 that has detected the occurrence of the event, That is, it is replaced with “1.0”. Accordingly, it can be seen that the same device control values as in FIG. 6 are obtained in all of the reaction nodes N1, N5, and N10 as compared with the device control values in FIG.

[Effect of the third embodiment]
As described above, in this embodiment, when the device control value corresponding to the new node determination result is not registered, the similarity corresponding to the reaction node among the device control values retrieved from the control value DB 13 based on the similar node determination result. Since the device control value is replaced with the regular device control value to be transmitted to the control device 22 corresponding to the sensor node 21 that detected the event occurrence, the device control value at each reaction node can be obtained accurately. As a result, errors in the overall control of the device control values can be reduced.

[Extended embodiment]
The present invention has been described above with reference to the embodiments, but the present invention is not limited to the above embodiments. Various changes that can be understood by those skilled in the art can be made to the configuration and details of the present invention within the scope of the present invention.

  DESCRIPTION OF SYMBOLS 10 ... Device control apparatus, 11 ... Communication I / F part, 12 ... Memory | storage part, 13 ... Control value DB, 14 ... Operation processing part, 14A ... Sensor result collection part, 14B ... Equipment control value calculation part, 14C ... Node determination , 14D ... device control value search unit, 14E ... device control unit, 20 ... sensor network, 21 ... sensor node, 21A ... communication I / F unit, 21B ... sensor unit, 21C ... device I / F unit, 22 ... control machine.

Claims (6)

A sensor result collection unit that collects sensor results indicating whether or not any event detected by these sensor nodes has occurred by performing data communication with a plurality of sensor nodes;
A device control value calculation unit for calculating a device control value for controlling the control device associated with each sensor node based on the sensor result;
Based on the sensor result, among the sensor nodes, a sensor node that detects the occurrence of the event is determined as a reaction node, a sensor node that does not detect the occurrence of the event is determined as a non-reaction node, A node determination unit that determines a sensor node located in the vicinity of the reaction node among the reaction nodes as a neighborhood node;
The device control value of each control device calculated by the device control value calculation unit from an arbitrary sensor result is associated with the node determination result related to each sensor node obtained by the node determination unit from the sensor result. A control value database to be stored;
Corresponding to the new node determination result by searching the control value database based on the new node determination result obtained by the node determination unit from the new sensor result collected by the sensor result collection unit When a new device control value is acquired and the new device control value is not registered, a new device control value corresponding to a new similar node determination result similar to the new node determination result is determined as a new device control. A device control value search unit to be acquired as a value;
A device control unit that generates a device control signal corresponding to the new device control value and transmits the device control signal to each control device. The device control apparatus according to claim 1,
The device control value calculation unit calculates a new device control value from the new sensor result when the new device control value is not registered, and associates the new device control value with the new node determination result to the control value database. A device control device that is additionally registered. In the equipment control device according to claim 1 or 2,
When the new device control value is unregistered, the device control value search unit has detected the event occurrence of the device control value related to the reaction node among the device control values corresponding to the similar node determination result. Replace with a regular device control value to be transmitted to the control device corresponding to the sensor node,
The device control unit generates a device control signal corresponding to the device control value after replacement and transmits the device control signal to each control device. A sensor result collection unit that collects sensor results indicating whether or not any event detected by these sensor nodes has occurred by performing data communication with a plurality of sensor nodes; and
A device control value calculating unit for calculating, for each sensor node, a device control value for controlling a control device associated with each sensor node based on the sensor result;
A node determination unit determines, based on the sensor result, a sensor node that detects the occurrence of the event among the sensor nodes as a reaction node, and a sensor node that does not detect the occurrence of the event as a non-reaction node A node determination step of determining and determining a sensor node located near the reaction node among the non-reaction nodes as a neighborhood node;
The control value database is a device control value of each control device calculated in the device control value calculation step from an arbitrary sensor result, and a node determination result related to each sensor node obtained in the node determination step from the sensor result And associating and storing,
The device control value search unit searches the control value database based on the new node determination result obtained in the node determination step from the new sensor result collected in the sensor data collection step. If a new device control value corresponding to a new node determination result is acquired and the new device control value is not registered, a similar device corresponding to a new similar node determination result similar to the new node determination result A device control value search step for acquiring a control value as a new device control value;
A device control method, comprising: a device control unit that generates a device control signal corresponding to the new device control value and transmits the device control signal to each control device. In the apparatus control method according to claim 4,
The device control value calculation step calculates a new device control value from the new sensor result when the new device control value is not registered, and associates the new device control value with the new node determination result to the control value database. A device control method comprising a step of additional registration. In the apparatus control method according to claim 4 or 5,
In the device control value search step, when the new device control value is not registered, among the device control values corresponding to the similar node determination result, the device control value related to the reaction node is detected as the occurrence of the event. Substituting a regular device control value to be transmitted to the control device corresponding to the sensor node,
The device control step includes a step of generating a device control signal corresponding to the device control value after replacement and transmitting the device control signal to each control device.

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