JP2007233619A - Sensor network system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To control a controlled device appropriately on the basis of sensor information outputted by many sensor radio tags installed indoors and to relate the respective sensor radio tags to their installation positions by simple processing without requiring technical knowledge. <P>SOLUTION: An image of a luminous body 13 in which the respective radio tags 6 are lighted is picked up by an image pickup device 7 fixed in a room 3. On the basis of analysis of the picked up image and registered self/non-self identification information, a management computer 5 registers the respective sensor radio tags 6 and their installation positions indoors in association with one another. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention is a sensor that installs a sensor wireless tag at each position in a room, measures temperature and humidity information at the installation position, and controls the operation of a controlled device such as an air conditioner by a management computer to perform environmental management and the like Related to network system.

  An environment management system that manages the environment of a room or the like controls the operation of a heating device, a cooling device, an air conditioner, or the like by a management computer based on temperature and humidity information measured by sensors installed in various places in the room. It shall be maintained at predetermined environmental conditions. In the environment management system, a system is also proposed in which each sensor and a management computer are connected wirelessly to exchange measurement information.

  Patent Document 1 includes a plurality of transmission terminals each including only a wireless transmission unit, and one reception terminal including a plurality of wireless reception units in which different reception frequencies are set. Between each transmission terminal and the reception terminal, There has been proposed an environment management system that transmits and receives information at a predetermined frequency assigned in (1). In such an environment management system, the receiving terminal identifies from which transmitting terminal the received information is transmitted based on the frequency information, and is automated.

In Patent Document 2, a light emitting device is attached to each machine in a factory and a camera is installed on the ceiling, and the operating state is detected by photographing the light emitting device that is turned on when the switch operation of each machine is performed. A management system is disclosed. In such a management system, the operating state of each machine due to blinking of light taken by the camera is transmitted as serial data to the management device for detection.
JP 2005-51557 A Japanese Patent Laid-Open No. 5-38657

  Since the environment management system disclosed in Patent Document 1 described above automatically identifies a large number of transmission terminals based on frequency information, the cost and size of the transmission terminals are increased compared to a communication system employing a polling method. Can be suppressed. However, in such an environmental management system, there is a problem that a dedicated person who is familiar with the system is required in order to initially register each transmission terminal and its installation position, and it takes time and effort. Moreover, in such an environmental management system, even when the installation position of the transmitting terminal is changed during the operation process, it is necessary to re-enter the changed position into the system software by a dedicated person, and the system operation is troublesome. .

  In addition, in the machine operating state management system disclosed in Patent Document 2, it is possible to automatically and easily grasp the operating state of a machine installed based on a captured image of a camera. However, such a management system is a simple system that monitors only the on / off state of the machine, and requires processing for registering the positions of many machines installed in the room in the management apparatus in advance. In the management system, for example, a camera can be provided with a swing mechanism to photograph many machines installed indoors. However, it is necessary to associate an image photographed by the camera with the machine.

The present invention accurately controls a controlled device based on sensor information output from a large number of sensor wireless tags installed in a room, and eliminates the need for expertise in associating each sensor wireless tag with its installation position. It has been proposed for the purpose of providing a sensor network system that can be performed by simple processing.

  A sensor network system according to the present invention that achieves the above-described object includes a management computer that has a wireless tag reader function and outputs a predetermined control signal to a controlled device, and a large number of sensors installed at predetermined positions in a room. The wireless tag is composed of one or a plurality of imaging devices that take an image of each wireless tag that is fixedly installed indoors and illuminate a light emitter, and output the image information to a management computer. In the sensor network system, each sensor wireless tag includes an antenna unit and a high-frequency signal processing unit that perform wireless connection with a management computer, a light emitter, a sensor unit, and a memory unit that stores self-other identification information. And a control unit that performs a control operation of each unit. In the sensor network system, each sensor wireless tag stores its own identification information in a memory unit. In the sensor network system, an arbitrary sensor wireless tag is selected, and each sensor network system is installed at a predetermined position to be managed in a room that can be imaged by the imaging device. After each sensor wireless tag is installed indoors, the sensor network system wirelessly outputs its own and other identification information sequentially from the arbitrarily selected sensor wireless tag to the management computer and turns on the light emitter. In the sensor network system, an imaging device images each sensor wireless tag that lights a light emitter, and outputs image information to a management computer. The sensor network system uses the sensor wireless tag in the room based on the indoor plane information obtained by performing image processing on the identification information transmitted from the sensor wireless tag and the image information output from the imaging device in the management computer. The initial registration is performed to identify the installation position of the device and associate it with the self-other identification information.

  In addition, a sensor network system according to the present invention that achieves the above-described object includes a management computer that has a wireless tag reader function and outputs a predetermined control signal to a controlled device, and a plurality of computers installed at predetermined positions in a room. Sensor wireless tags, and one or a plurality of imaging devices that capture images of each of the sensor wireless tags that are fixedly installed indoors and illuminate a light emitter, and output the image information to a management computer. The sensor network system registers in advance the self-other identification information of each sensor wireless tag installed indoors in the management computer. In the sensor network system, each sensor wireless tag is installed at a predetermined position to be managed in the room that can be imaged by the imaging device. In the sensor network system, a light-emitting body lighting instruction signal is output from a management computer to a predetermined sensor wireless tag corresponding to selected arbitrary self-other identification information, and an imaging operation instruction signal is output to the imaging apparatus. Is output. In the sensor network system, an imaging device captures an image of a sensor wireless tag whose light emitter is lit by a lighting instruction signal and outputs the image information to a management computer. The sensor network system uses the management computer to identify the installation position of the sensor wireless tag in the room based on the indoor plane information obtained by performing image processing on the image information, and register it in association with the self-other identification information Is done. In the sensor network system, the initial registration process described above is sequentially performed on each sensor wireless tag, and the installation state of each sensor wireless tag in the room is registered.

  In the sensor network system, sensor information detected by the sensor unit is wirelessly output from the sensor wireless tags registered in the management computer to the management computer together with the identification information of each sensor. In the sensor network system, the management computer compares the received self-other identification information with the registered information to grasp the situation at a predetermined position in the room, and outputs a predetermined control signal to the controlled device.

In the sensor network system, after initial setting, an arbitrary sensor wireless tag is moved to an appropriate position as necessary, and system operation for acquiring sensor information at the position is achieved. In the sensor network system, after moving the sensor wireless tag, the self-other identification information is output from the sensor wireless tag, the illuminator is turned on, and the image is captured by the imaging device and the captured image is output, as in the initial registration operation described above. The management computer performs update registration of the installation position of the sensor wireless tag.

  The sensor network system according to the present invention can install each sensor wireless tag at an arbitrary position in the room by using an active wireless tag that incorporates a power supply as a sensor wireless tag and does not require connection of the power supply. It is.

  In the sensor network system according to the present invention, the sensor unit of the sensor wireless tag is, for example, a temperature measurement sensor that measures at least the room temperature, and the controlled device controlled by the management computer is, for example, an air conditioning / air conditioning apparatus. In the sensor network system, the management computer precisely controls the operation of the air-conditioning and air-conditioning apparatus based on the temperature information measured by each sensor wireless tag installed at many locations in the room, and performs highly accurate environmental management.

  In the sensor network system according to the present invention, each sensor wireless tag includes a light emitting diode as a light emitter. In a sensor network system, by using a light emitting diode excellent in low power consumption characteristics and high luminance characteristics, it can be used for a relatively long period of time and imaging in a lighting state can be reliably performed by an imaging device. .

  In the sensor network system according to the present invention, the light-emitting diode is an infrared light-emitting diode, the imaging device is configured by an infrared camera, and imaging is performed by the imaging device with the room in a low illuminance state. In the sensor network system, each sensor wireless tag installed indoors is reliably imaged and registered in the management computer.

  In the sensor network system according to the present invention, the light-emitting diode is a visible light-emitting diode, the imaging device is configured by a high-sensitivity camera, and imaging is performed by the imaging device with the room in a low illuminance state. In the sensor network system, each sensor wireless tag installed indoors is reliably imaged and registered in the management computer.

  The sensor network system according to the present invention uses a solid-state image sensor camera having a fish-eye imaging lens that can collectively image the entire room as an imaging device. In the sensor network system, fisheye image information captured by an imaging device is converted into plane information by a management computer to identify the installation position of each sensor wireless tag.

  In the sensor network system according to the present invention, each sensor wireless tag is attached to and installed on a device or fixture installed indoors, and predetermined management information relating to the device or fixture is stored in a memory unit. In the sensor network system, the management information is output from each sensor wireless tag to the management computer together with the self-other identification information, so that the installation position of the device or equipment in the room is grasped by the management computer.

  According to the sensor network system according to the present invention configured as described above, an image of a sensor wireless tag whose light-emitting body is lit is captured by an imaging device fixedly installed indoors, and the management computer is configured to detect the sensor wireless tag. Registration is performed by associating with the installation position of the sensor wireless tag in the room based on the analysis of the identification information and the indoor plane information obtained from the captured image. Therefore, according to the sensor network system, a new registration or change registration operation between a large number of sensor wireless tags and their respective installation positions can be performed extremely simply and accurately without requiring a dedicated person who is familiar with the system. . According to the sensor network system, it is possible to efficiently operate the system, and it is possible to accurately control the controlled device based on sensor information output from a large number of sensor wireless tags installed indoors. To do.

  Hereinafter, a sensor network system 1 shown as an embodiment of the present invention will be described in detail with reference to the drawings. In the sensor network system 1, environmental conditions such as temperature and humidity in the room 3 of the building 2 are automatically measured at a predetermined timing at arbitrary many points. In the sensor network system 1, the operation of the controlled device 4 such as a heating device, a cooling device, an air conditioning device, or a humidifying device is automatically controlled based on the measurement result, so that the room 3 in the building 2 is always at the optimum temperature and humidity. To be set to the environmental state.

  As shown in FIG. 1, the sensor network system 1 includes a management computer 5 and a number of sensor wireless tags 6A to 6N installed at measurement points in the room 3 (hereinafter referred to as “sensor wireless tags” unless otherwise described). And a single or a plurality of infrared cameras 7 installed on the ceiling of the room 3. In the sensor network system 1, as will be described in detail later, temperature / humidity information at each position measured by each sensor wireless tag 6 is read by a management computer 5 having a wireless tag reader function, and is controlled from the management computer 5. A control signal is output to the device 4 and its operation is controlled to keep the room 3 in an optimum environmental state.

  In the sensor network system 1, when each sensor wireless tag 6 is installed in the room 3 as shown in FIG. 1, management objects 8 </ b> A to 6 </ b> N such as various devices and fixtures installed in the room 3. (Hereinafter collectively referred to as a management object 8 unless otherwise described), and functions not only as a temperature / humidity sensor function at each position but also as a management tag for these management objects 8 You may comprise. Of course, the sensor network system 1 may control a plurality of controlled devices 4 by a single management computer 5.

  In the sensor network system 1, the management computer 5 and the sensor wireless tag 6 are wirelessly connected using an appropriate 1 to N short-range wireless communication system. In the sensor network system 1, the management computer 5 and the sensor wireless tag 6 are not only directly connected to each other by radio, but also, for example, when managing the environment of a large room or multi-storey building 2 where radio waves do not reach, or carrier frequency characteristics For example, wireless connection may be performed via a relay function that is installed as appropriate. In this case, in the sensor network system 1, a relay antenna device is installed at an appropriate position in the room, and the relay antenna device and the management computer 5 are connected to each other by, for example, a wireless connection by a Bluetooth wireless communication method or a wired connection by a USB method or the like. In addition to the connection, the relay antenna device and each sensor wireless tag 6 are wirelessly connected.

  The management computer 5 registers each sensor wireless tag 6 and gives self-other identification information (hereinafter referred to as ID information) to each sensor wireless tag 6. The management computer 5 registers installation position information in the room 3 in association with each ID information corresponding to each registered sensor wireless tag 6 based on an initial setting operation described later. For example, the management computer 5 may register management information related to the management object 8 to which each sensor wireless tag 6 is attached in association with the ID information.

  The management computer 5 has a transmission / reception function based on the wireless communication method described above, and receives measurement information transmitted from each sensor wireless tag 6 by giving a measurement instruction to the sensor wireless tag 6 as described later. In addition, the management computer 5 is connected to the infrared camera 7 wirelessly or by wire as will be described later, captures image information obtained by imaging the room 3 output from the infrared camera 7, performs arithmetic processing on the image information, and performs plane processing. It has an image conversion function for converting to an image.

  As will be described later, the management computer 5 wirelessly outputs a control signal instructing each sensor wireless tag 6 to measure temperature and humidity. The management computer 5 identifies the ID information attached to the measurement information transmitted from each sensor wireless tag 6, and the room in which each sensor wireless tag 6 is installed based on this ID information and the corresponding installation position information. Measurement information of temperature / humidity at a predetermined position in 3 is obtained. The management computer 5 outputs a control signal for controlling the operation of the controlled device based on the measurement information. The management computer 5 also has a function of accumulating and counting the above-described measurement information and information related to the operation of the controlled device, for example, creating a management report.

  The sensor wireless tag 6 is a wireless tag used for RFID (Radio Frequency Identification) technology that wirelessly exchanges predetermined information from a tag in which ID information is embedded, for example, and is connected to the management computer 5 by the wireless communication method described above. It has a function to send and receive predetermined information wirelessly. Although not described in detail, the sensor wireless tag 6 is a tag having an external specification such as a card type or a label type in which an IC chip having a predetermined function is mounted on a base body. The sensor wireless tag 6 is installed on the surface of the management object 8 such as a desk or work table disposed at each position in the room 3 as shown in FIG. 1 by an adhesive tape or the like provided on the base body. Is done. In addition, as described above, the sensor wireless tag 6 may be attached to a device or the like whose management object 8 is an asset management target.

  Specifically, as shown in FIG. 2, the sensor wireless tag 6 includes a control unit 9 that controls the operation of each component, an antenna 10 that transmits and receives wireless signals between the management computer 5, and the antenna 10. A high-frequency signal processing unit 11 that processes radio signals to be transmitted and received, and a rewritable memory unit 12 that stores the above-described ID information, predetermined information, and the like are provided. The sensor wireless tag 6 includes a red LED (Light Emitting Diode) 13 that emits red light, and an LED drive circuit unit 14 that controls turning on and off of the red LED 13.

  The sensor wireless tag 6 includes a temperature / humidity sensor unit 15 that measures the temperature and humidity of the installation location as a sensor function. The temperature / humidity sensor unit 15 measures temperature and humidity based on the measurement instruction signal output from the control unit 9 and outputs measurement information to the control unit 9. The sensor wireless tag 6 outputs the measurement information from the control unit 9 to the high-frequency signal processing unit 11, converts the measurement information into a measurement signal, and transmits the measurement signal from the antenna 10 to the management computer 5.

  The sensor wireless tag 6 includes a power supply circuit unit 17 having a battery 16 serving as a self-power source. By supplying DC power of a predetermined voltage from the power supply circuit unit 17 to each component, the operation of each component is performed. It is a so-called active type tag. The sensor wireless tag 6 includes, for example, a start switch 18, and power is supplied to each unit by a switching operation of the start switch 18.

  Although not shown, the sensor wireless tag 6 has an external connection terminal portion, and predetermined information is input and stored in the memory portion 12 by an appropriate input device connected via the external connection terminal portion. You may be made to do. The sensor wireless tag 6 stores, for example, fixed asset information of the management target object 8 to be pasted and appropriate management information as the storage information.

  Although not described in detail, the infrared camera 7 is a color CCD (Charge-Coupled Device) or a color CMOS infrared wide-angle camera in which an infrared filter 20 and a fish-eye lens 21 are attached to the imaging unit of the camera body 19. The infrared camera 7 has, for example, a wireless transmission / reception function such as a Bluetooth wireless communication system including an antenna 22 or a wired connection function such as a USB system, and is connected to the management computer 5. While outputting, an imaging instruction | indication signal is received and the room 3 is imaged.

  As shown in FIG. 1, the infrared camera 7 is installed in a state of being fixed to the ceiling 3 </ b> A of the room 3. As described above, the infrared camera 7 uses the fisheye lens 21 as an imaging lens, and thus can image all the sensor wireless tags 6 attached to the management object 8 or the like from a fixed point. As described above, the infrared camera 7 is connected to the management computer 5 wirelessly or by wire, and exchanges control signals and image information with the management computer 5. The infrared camera 7 images the room 3 at a predetermined timing based on an imaging instruction signal output from the management computer 5 in a state in which all the lighting devices in the room 3 are turned off to reduce the illuminance as will be described later. The image information is output to the management computer 5.

  In the sensor network system 1 configured as described above, after installing the management computer 5 and the infrared camera 7 in the room 3 and connecting them, based on the image captured by the infrared camera 7 according to the procedure shown in FIG. The plane information generated by the management computer 5 is adjusted. In the sensor network system 1, the infrared camera 7 is installed on the ceiling 3A so that the entire room 3 can be seen, and the infrared camera 7 and the management computer 5 are connected by the above-described wireless or wired connection (s-1). .

  In the sensor network system 1, after confirming the connection state, a control signal that instructs the infrared camera 7 to perform test imaging of the room 3 is output from the management computer 5 (s-2). In the sensor network system 1, the infrared camera 7 images the room 3 based on this imaging instruction and outputs image information to the management computer 5 (s-3). In the sensor network system 1, predetermined image processing is performed in the management computer 5 based on the image information output from the infrared camera 7, and a position information table that associates the image information with the actual position of the room 3 is created and stored. (S-4).

  By the way, since the infrared camera 7 includes the fisheye lens 21 as described above, it is possible to image the room 3 in the entire 360 ° range around the installation point. obtain. In addition, the figure is the figure which imaged the state in which red LED13 of each sensor wireless tag 6 mentioned later was lighted, and the light spot was not image | photographed by the test image. Due to the characteristics of the fisheye lens 21, the infrared camera 7 becomes a photographed image in which the perspective interval gradually decreases from the center toward the periphery.

  In the management computer 5, the above-described image taken by the infrared camera 7 is divided into, for example, seven concentric areas A-0 to A-7 from the center toward the periphery by software processing as shown in FIG. The areas A-0 to A-7 are divided into eight fan-shaped areas B-0 to B-8 in the circumferential direction. Based on this division, the management computer 5 divides the room 3 into 56 areas of 7 × 8 as shown in FIG. 5 and creates plane information that associates the installation positions of the sensor wireless tags 6 with each other. In the sensor network system 1, when it is necessary to grasp the installation position of each sensor wireless tag 6 in more detail, the above-described area division may be further subdivided. The sensor network system 1 is not limited to such an image processing method, and the installation position of each sensor wireless tag 6 may be recognized from an image captured by the infrared camera 7 using an appropriate image processing technique.

  In the sensor network system 1, the process of registering each sensor wireless tag 6 used in the management computer 5 according to the procedure shown in FIG. 6, the operation of installing each sensor wireless tag 6 indoors, and each sensor wireless tag installed 6 and an initial setting operation including processing for associating the installation position in the room 3 is performed. In the sensor network system 1, ID information is assigned to each sensor wireless tag 6 to be used, and processing for storing this ID information in the memory unit 12 is performed (s-10).

  In the sensor network system 1, for example, the sensor wireless tag 6 is loaded in an appropriate input processing device, ID information in a predetermined format or specification information as necessary is input and stored in the memory unit 12. In the sensor network system 1, when the sensor wireless tag 6 is used to perform management using a predetermined management object 8, management information related to the management object 8 is input and stored in the memory unit 12. You may make it do. The sensor wireless tag 6 may be provided by storing ID information and specification information in the memory unit 12 at the manufacturing stage. It is preferable that the sensor wireless tag 6 can be directly confirmed by attaching a label for displaying the assigned ID information, for example.

  In the sensor network system 1, a large number of sensor wireless tags 6 are installed in an appropriate position where the temperature or the like is to be measured in the room 3 or a management object 8 in a state where the infrared camera 7 can capture an image. (S-11). Since each sensor wireless tag 6 is associated with ID information attached to each of the wireless tag 6 by a process described later and the installation position, the installation position is not particularly determined and is randomly selected and installed. Each sensor wireless tag 6 can be moved to an appropriate position in the room 3 and installed even after the system is operated after the installation.

  In the sensor network system 1, when the operation of installing each sensor wireless tag 6 in the room 3 is completed, the installation completion report is sent to the management computer 5. This installation completion report is made by, for example, clicking the “sensor wireless tag installation complete” icon displayed on the display screen of the management computer 5 after each sensor wireless tag 6 is installed. In the sensor network system 1, based on this installation completion report, the management computer 5 performs system setup processing such as setting the set temperature and humidity of the room 3 (s-12).

  In the sensor network system 1, a process for associating each sensor wireless tag 6 with the installation position is performed, but as a pre-operation, the illumination in the room 3 is turned off to bring it into a low illuminance state. In the sensor network system 1, as described above, the red LED 13 of the sensor wireless tag 6 is clearly imaged by the infrared camera 7, the red LED 13 of the sensor wireless tag 6, and the low illumination environment.

  In the sensor network system 1, an arbitrary sensor wireless tag 6 installed in the room 3 is selected, and a switching operation of the start switch 18 is performed. The sensor wireless tag 6 thereby reads out the ID information and management information stored from the memory unit 12 and wirelessly outputs them to the management computer 5, and the red LED 13 is lit (s-13).

  In the sensor network system 1, the management computer 5 confirms whether or not the received ID information or the like is registered, and performs processing for registering the ID information or the like when it is not registered. When the ID information registration process is completed, the management computer 5 outputs an instruction signal for instructing the infrared camera 7 to image the room 3 (s-14).

  In the sensor network system 1, the infrared camera 7 images the room 3 based on an instruction from the management computer 5 (s-15). The infrared camera 7 outputs image information generated by performing predetermined processing on the captured image to the management computer 5. Note that only the sensor wireless tag 6 whose red LED 13 is lit is captured in the captured image.

  In the sensor network system 1, the management computer 5 performs the above-described image processing based on the image information output from the infrared camera 7, reads the position information table, and installs the sensor wireless tag 6 in the room 3. A process of determining the position and registering the installation position information in association with the ID information is performed (s-16). When the management computer 5 completes the registration process of the ID information-installation position information, it designates the sensor wireless tag 6 based on the ID information and notifies the registration completion.

  In the sensor network system 1, based on the registration completion notification output from the management computer 5, the sensor wireless tag 6 performs a transition process to a standby state (s-17). In the sensor wireless tag 6, the red LED 13 is turned off by the control signal output from the control unit 9 to the LED drive circuit unit 14, and the measurement operation by the temperature / humidity sensor unit 15 is enabled.

  In the sensor network system 1, the association process between the ID information and the installation position is performed for each sensor wireless tag 6 by the same procedure. In the sensor network system 1, although illustrated for convenience of explanation, nine sensor wireless tags T <b> 1 to T <b> 9 installed in the room 3 are respectively imaged by the infrared camera 7 as shown in FIG. 4. In the sensor network system 1, image processing is performed in the management computer 5 based on this captured image, and the position information obtained by these sensor wireless tags T1 to T9 dividing the room 3 shown in FIG. Positioned on the table.

  In the sensor network system 1, as described above as the procedure of the initial setting operation, the ID information is sequentially output from the sensor wireless tag 6 side to the management computer 5 so that the registration and the association with the installation position are performed. However, it goes without saying that the present invention is not limited to such a procedure. The sensor network system 30 shown in FIG. 7 has the above-described configuration equivalent to the sensor network system 1, but each sensor wireless tag 6 is installed in the room 3 in the procedure of the initial setting operation from the management computer 5 side. The drive control is performed on the sensor wireless tag 6, and the procedure for associating the registration with the installation position is different.

  That is, in the sensor network system 30 as well, the ID information is assigned to each sensor wireless tag 6 to be used and the process of storing this ID information in the memory unit 12 is performed (s-30). . In the sensor network system 30, contents such as ID information and specifications are registered in the management computer 5 in advance (s-31). In the sensor network system 30, the ID information assignment and registration processing is performed between the management computer 5 and each sensor wireless tag 6 by an appropriate method that is generally performed.

  In the sensor network system 30, for example, the management computer 5 or an appropriate input device and the sensor wireless tag 6 may be connected, and ID information may be assigned, exchanged, and registered. In the sensor network system 30, for example, information such as a model number given in advance to the sensor wireless tag 6 at the manufacturing stage is input to the management computer 5, and the management computer 5 stores the information on the sensor wireless tag 6 based on the input information. ID information may be automatically given and fed back. In this case, the sensor network system 30 calls the sensor wireless tag 6 from the management computer 5 based on the input information, and outputs the ID information to be stored in the memory unit 12.

  In the sensor network system 30, each sensor wireless tag 6 is randomly selected and installed at an arbitrary position in the room 3 (s-32). When this installation operation is completed, the management computer 5 sets a system set upon completion of installation. An up process is performed (s-33). Each sensor wireless tag 6 is turned on with the activation switch 18 in the installed state. The sensor network system 30 is not particularly required. For example, based on the installation completion report, the management computer 5 calls each ID information and connects to the sensor wireless tag 6 to which the ID information is assigned. You may make it perform the process which confirms a state.

  In the sensor network system 30, the management computer 5 selects ID information registered according to the registration order of ID information, for example, and an instruction signal for performing registration processing on the sensor wireless tag 6 to which the ID information is attached. Is output wirelessly (s-34). In the case of the sensor wireless tag 6 in which the ID information is registered but is not actually installed in the room 3, the management computer 5 confirms the reception because there is no reception confirmation feedback described later. In this case, in the sensor network system 30, in this case, the illumination in the room 3 is turned off as a pre-operation so as to be in a low illuminance state.

  In the sensor network system 30, when the sensor wireless tag 6 receives the instruction signal output from the management computer 5, it is confirmed that the sensor wireless tag 6 is installed in the room 3 by outputting a reception confirmation signal. In the sensor wireless tag 6, a drive signal is output from the control unit 9 to the LED drive circuit unit 14 based on the instruction signal, and the red LED 13 is turned on (s-34).

  In the sensor network system 30, the process for associating the sensor wireless tag 6 with its installation position in the room 3 is performed and registered in the management computer 5 in the same manner as the procedure of the sensor network system 1 described above. That is, the sensor network system 30 also outputs an instruction signal for instructing the infrared camera 7 to take an image of the imaging room 3 together with the output of the instruction signal from the management computer 5 to the sensor wireless tag 6 described above. Also in the sensor network system 30, the infrared camera 7 images the room 3 based on an instruction from the management computer 5 (s-36). The infrared camera 7 outputs image information generated by performing predetermined processing on the captured image to the management computer 5.

  Also in the sensor network system 30, the management computer 5 performs the above-described image processing based on the image information output from the infrared camera 7, reads the position information table, and installs the sensor wireless tag 6 in the room 3. A process of determining the position and registering the installation position information in association with the ID information is performed (s-37). In the sensor network system 30, when this ID information-installation position information registration process is completed, the management computer 5 notifies the sensor wireless tag 6 of registration completion based on the ID information. Based on this, a transition process to the standby state is performed in the sensor wireless tag 6 (s-38). In the sensor network system 30, the next ID information is selected in the management computer 5 by the same procedure, and the above-described processing for associating the ID information with the installation position for the sensor wireless tag 6 is performed.

  In the sensor network systems 1 and 30, the initial setting operation is completed by the series of operations described above. In the sensor network systems 1 and 30, for example, each process may be performed according to the procedure displayed on the management computer 5, and since it is a simple work, it is possible to perform an initial setting operation even without a dedicated system administrator. And

  In the sensor network systems 1 and 30 configured as described above, as shown in FIG. 8, the management computer 5 wirelessly outputs an instruction signal instructing each sensor wireless tag 6 to measure temperature and humidity ( s-40). In the sensor network systems 1 and 30, when each sensor wireless tag 6 receives an instruction signal from the antenna 10, the high-frequency signal processing unit 11 performs predetermined signal processing and outputs the processed signal to the control unit 9. Recognize instructions. In the sensor network system 1, 30, each sensor wireless tag 6 outputs a control signal instructing the temperature / humidity sensor unit 14 to start a measurement operation from the control unit 9 to measure temperature / humidity. (S-41).

  In the sensor network systems 1 and 30, each sensor wireless tag 6 performs a predetermined measurement operation by the temperature / humidity sensor unit 15 and outputs a measurement result to the control unit 9. In the sensor network system 1, 30, each sensor wireless tag 6 creates measurement information based on the measurement result in the control unit 9 and reads out the registered ID information from the memory unit 12. Is output to the high-frequency signal processing unit 11. In the sensor network system 1, 30, each sensor wireless tag 6 performs high-frequency signal processing on the measurement information and ID information in the high-frequency signal processing unit 11 and wirelessly transmits to the management computer 5 via the antenna 10. Output (s-42).

  In the sensor network systems 1 and 30, when the management computer 5 receives the ID information and measurement information wirelessly output from each sensor wireless tag 6, the target wireless sensor tag 6 is identified based on the ID information. Individual determination of temperature and humidity at the installation position of the sensor wireless tag 6 is performed (s-43). In the sensor network systems 1 and 30, the management computer 5 determines the overall environmental state of the room 3 by individual determination based on the above-described ID information and measurement information output from each sensor wireless tag 6, and the controlled device Whether or not the operation No. 4 is necessary is determined (s-44).

  In the sensor network systems 1 and 30, the management computer 5 outputs a control signal for controlling the operation to the controlled device 4 based on the determination result. In the sensor network system 1, 30, the controlled device 4 is controlled to operate based on the control signal, so that the room 3 is always set to an environmental state of optimum temperature / humidity (s-45). ).

  In the sensor network systems 1 and 30 described above, a large number of sensor wireless tags 6 are installed in the room 3 to measure temperature and humidity at a large number of points. However, the present invention is limited to such application examples. Not. For example, the sensor network systems 1 and 30 may be systems in which the sensor wireless tags 6 are installed in each room on each floor, and the entire building 2 is managed based on measurement information output from the sensor wireless tags 6.

  In the sensor network systems 1 and 30, in this case, the infrared camera 7 is installed in each room on each floor, and the sensor wireless tag 6 installed in the room 3 described above is registered. In the sensor network system 1, 30, ID information is also set for each infrared camera 7, and each infrared camera 7 is individually driven based on this ID information and the sensor wireless tag 6 is identified.

  In the sensor network systems 1 and 30, the temperature and humidity are measured based on the measurement instruction signal output from the management computer 5 to the sensor wireless tag 6 as described above. It is not limited. Each sensor wireless tag 6 is provided with, for example, a clock unit having a timekeeping function, and is configured such that a measurement operation is automatically performed based on a time signal output from the clock unit to the control unit 9 every predetermined time. May be.

  In the sensor network systems 1 and 30, the initial setting is performed according to the above-described procedure and the system is operated. However, a part of the sensor wireless tag 6 may be moved or replaced for some reason. In the sensor network systems 1 and 30, the same operation as the initial setting operation described above is performed so that the sensor wireless tag 6 is changed or newly registered. In the sensor network systems 1 and 30, it is preferable to delete the information registered in the management computer 5 when the existing sensor wireless tag 6 is replaced or removed.

  In the sensor network systems 1 and 30, the infrared light emitting diode and the infrared camera have been described. The light emitting LED of the sensor wireless tag 6 is a visible light emitting diode that emits visible light. Instead, a system in which a high-sensitivity camera is installed may be used.

It is a block diagram of a sensor network system shown as an embodiment of the present invention. It is a block diagram of the sensor wireless tag used for the sensor network system. It is a flowchart explaining the installation and registration procedure of the infrared camera in the sensor network system. It is explanatory drawing of the captured image by an infrared camera. It is explanatory drawing of the positional infomation table which performed the image process to the captured image of the infrared camera, and showed the installation position of the sensor wireless tag in a room | chamber interior. It is a flowchart explaining the installation and registration procedure of each sensor wireless tag in a sensor network system. It is a flowchart explaining the installation and registration procedure of each sensor wireless tag in another sensor network system. It is a flowchart explaining the procedure of measurement and environmental control in a sensor network system.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sensor network system 2 Building 3 Room 4 Controlled apparatus 5 Management computer 6 Sensor wireless tag 7 Infrared camera 8 Management object 9 Control part 10 Antenna 11 High frequency signal processing part 12 Memory part 13 Red LED
DESCRIPTION OF SYMBOLS 14 LED drive circuit part 15 Temperature / humidity sensor part 16 Battery 17 Power supply circuit part 18 Start switch 19 Camera body 20 Infrared filter 21 Fisheye lens 22 Antenna 30 Sensor network system

Claims (9)

A management computer having a wireless tag reader function and outputting a predetermined control signal to the controlled device;
An antenna unit and a high-frequency signal processing unit that perform wireless connection with the management computer, a light emitter, a sensor unit, a memory unit that stores self-other identification information, and a control unit that performs control operations of each component. A number of sensor wireless tags installed at appropriate positions in the room,
One or a plurality of imaging devices that are fixedly installed indoors and that image each sensor wireless tag that lights the light emitter and output the image information to the management computer,
Each of the sensor wireless tags installed indoors sequentially turns on the light emitters and wirelessly outputs their own and other identification information to the management computer,
The imaging device images the sensor wireless tag that lights the light emitter and outputs image information to the management computer;
Based on the self-other identification information output from the sensor wireless tag and the indoor plane information obtained by performing image processing on the image information output from the imaging device, the management computer uses the sensor wireless in the room. Perform initial registration to identify and register the tag installation position,
When each sensor wireless tag wirelessly outputs to the management computer the sensor information detected by the sensor unit together with the self-other identification information, the management computer grasps the situation at each position in the room, and A sensor network system that outputs a control signal to a control device. A management computer having a wireless tag reader function and outputting a predetermined control signal to the controlled device;
An antenna unit and a high-frequency signal processing unit that perform wireless connection with the management computer, a light emitter, a sensor unit, a memory unit that stores self-other identification information, and a control unit that performs control operations of each component. A number of sensor wireless tags installed at appropriate positions in the room,
One or a plurality of imaging devices that are fixedly installed indoors and that image each sensor wireless tag that lights the light emitter and output the image information to the management computer,
In addition to pre-registering the self-other identification information of each sensor wireless tag in the management computer, each sensor wireless tag is installed at any position where imaging by the imaging device in the room is possible,
A lighting instruction signal for the light emitter is output to the predetermined sensor wireless tag corresponding to the self-other identification information selected from the management computer, and an instruction signal for an imaging operation is output to the imaging device,
The imaging device images the sensor wireless tag that has turned on the light emitter by the lighting instruction signal, and outputs the image information to the management computer,
In the management computer, initial registration for identifying and registering the installation position of the sensor wireless tag in the room based on indoor plane information obtained by image processing of the image information,
When each sensor wireless tag wirelessly outputs the sensor information detected by the sensor unit together with the identification information to the management computer, the management computer grasps the situation at each position in the room, and the controlled device A sensor network system characterized by outputting a control signal to.   3. The sensor network system according to claim 1, wherein the sensor wireless tag is an active wireless tag having a built-in power source.   The sensor network system according to any one of claims 1 to 3, wherein the sensor unit of the sensor wireless tag includes a temperature measurement sensor that measures at least an indoor temperature.   The sensor network system according to any one of claims 1 to 4, wherein the light emitter provided in the sensor wireless tag is a light emitting diode.   6. The imaging device according to claim 1, wherein the light emitting diode is an infrared light emitting diode, the imaging device is an infrared camera, and imaging is performed by the imaging device in a low illuminance state in a room. The sensor network system according to any one of the above.   6. The light-emitting diode is a visible light-emitting diode, and the imaging device is a high-sensitivity camera, and imaging by the imaging device is performed with the room in a low illuminance state. The sensor network system according to any one of the above.   The sensor network system according to any one of claims 1 to 7, wherein the imaging device is a solid-state imaging device camera having a fish-eye imaging lens capable of collectively imaging the entire indoor area. Each of the sensor wireless tags is installed by being attached to a device or a fixture installed indoors, and predetermined management information regarding the device or fixture is stored in the memory unit. The sensor network system according to claim 1, wherein the sensor network system is registered in a management computer.

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