JP2011155957A - Condition-measuring system and method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To measure a condition by simultaneously operating a plurality of sensors in the occurrence of an event. <P>SOLUTION: In an environmental sensor node 20, sensor data on an environmental condition change is transmitted to a data processor 30 along with transmitting a measurement instruction to each of user sensor nodes 10 according to the environmental condition change detected by the own environmental sensor. In each of the user sensor nodes 10, the condition of a relevant user is measured using the own user sensor according to the measurement instruction from the environmental sensor node 20, and the resultant sensor data obtained is transmitted to the data processor 30. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a sensor network technique, and more particularly to a state measurement technique for controlling a plurality of sensor nodes and measuring a state of a measurement target.

  In recent years, in order to develop a low-carbon society, energy-saving technology for lighting, air conditioners, TVs, etc. has been developed. It is performed to measure the usage environment of a device and automatically recognize the behavior of a user who uses the device.

  Conventionally, as such a state measurement system, in order to measure and estimate a user's state and behavior such as body temperature and movement, by attaching a sensor to the individual and measuring it, the user's state and behavior are measured in real time. A technique for estimating the state has been proposed (see, for example, Patent Document 1). In addition, a technique for simultaneously measuring not only the state of the user but also the state of an object operated by the user has been proposed (see, for example, Patent Document 2).

JP 2006-320290 A JP 2009-089633 A

However, such a conventional technique has a problem that a plurality of sensors cannot be operated and measured simultaneously when an event occurs.
In a state measurement system that measures the user, the user's actions are measured in many ways, so the user is often equipped with multiple sensors, such as an acceleration sensor. Some that need to be run are also included. Therefore, in order to measure the user's movements from multiple angles, it is necessary to operate a plurality of sensors attached to the user at high speed and in synchronization with changes in the user's position and the state of the object to be operated. .

  In the prior art, each sensor measures sensor data independently and transmits it to the server, or in response to an instruction from the server, transmits the sensor data measured so far to the server. For this reason, it is impossible to operate a plurality of user sensors at high speed in synchronization with the position of the user or the state of an object to be operated, and to acquire sensor data measured simultaneously by a plurality of user sensors when an event occurs. I can't.

  The present invention has been made to solve such problems, and an object of the present invention is to provide a state measurement technique that can measure by operating a plurality of sensors simultaneously when an event occurs.

  In order to achieve such an object, a state measurement system according to the present invention includes a plurality of user sensor nodes that are attached to a user, measure the state of the user with a sensor, and transmit the obtained sensor data. An environmental sensor node that is installed in an environment where a user exists, detects environmental state changes including the movement and presence / absence of the user, and transmits the obtained sensor data, and these user sensor node and environmental sensor A data processing device that receives and accumulates sensor data transmitted from the node, and transmits sensor data related to the state change to the data processing device at the environmental sensor node in response to the environmental state change detected by the sensor. At the same time, a measurement instruction is transmitted to each of the user sensor nodes. Depending on al measurement instruction, the state of the user measured by the sensor, transmits the sensor data obtained to the data processing device.

  At this time, the environmental sensor node transmits sensor data relating to the state change only to the data processing device without transmitting a measurement instruction to the user sensor node in accordance with the state change detected by the sensor, and performs data processing. The device transmits a measurement instruction to each of the user sensor nodes in response to the reception of the sensor data relating to the state change, and the user sensor node in response to the measurement instruction from the data processing device in the user sensor node May be measured, and the obtained sensor data may be transmitted to the data processing device.

  In addition, a state measurement method according to the present invention is installed in an environment where a user exists, and a plurality of user sensor nodes that are attached to a user, measure the state of the user with a sensor, and transmit the obtained sensor data. The environmental sensor node that detects the state change of the environment including the movement and presence / absence of the user by the sensor and transmits the obtained sensor data, and the sensor data transmitted from the user sensor node and the environmental sensor node A state measurement method used in a state measurement system including a data processing device that receives and accumulates data, wherein an environmental sensor node stores sensor data related to the state change in accordance with a state change of the environment detected by the sensor. Transmitting to the processing device and transmitting a measurement instruction to each of the user sensor nodes; Nsanodo, in response to the measurement instruction from the environment sensor node, the status of the user measured by the sensor, and a step of transmitting the sensor data obtained to the data processing device.

  At this time, the environmental sensor node transmits sensor data relating to the state change only to the data processing device without transmitting a measurement instruction to the user sensor node in accordance with the state change detected by the sensor; The data processing device transmits a measurement instruction to each of the user sensor nodes in response to reception of the sensor data related to the state change, and the user sensor node responds to the measurement instruction from the data processing device by the sensor. Measuring the user's condition and transmitting the obtained sensor data to the data processing device.

  According to the present invention, when an environmental state change is detected in the environmental sensor node, a plurality of sensors attached to the user can be operated at high speed and in synchronization with the occurrence of the event. Therefore, the user state is measured at each user sensor node at the same time, and the obtained sensor data is transmitted to the data processing device. As a result, the user state at the time of event occurrence can be measured in a multifaceted manner. It becomes possible.

It is a block diagram which shows the structure of the state measurement system concerning 1st Embodiment. It is a sequence diagram which shows operation | movement of the state measurement system concerning 1st Embodiment. It is a structural example of a state measurement system. It is a timing chart which shows the operation example of a state measurement system. It is a sequence diagram which shows operation | movement of the state measurement system concerning 2nd Embodiment.

Next, embodiments of the present invention will be described with reference to the drawings.
[First Embodiment]
First, a state measurement system according to a first embodiment of the present invention will be described with reference to FIG. FIG. 1 is a block diagram illustrating a configuration of a state measurement system according to the first embodiment.
The state measurement system 1 includes a plurality of user sensor nodes 10, one or more environmental sensor nodes 20, and one data processing device 30.

The user sensor node 10 is composed of a small electronic device, and is attached to a user, that is, a person to be measured, so that the user sensor node 10 measures the state of the user, and the obtained sensor data is transmitted by data communication. It has a function of transmitting to the data processing device 30.
The environmental sensor node 20 is composed of small electronic devices, and is installed in an environment where a user exists, such as a ceiling or a wall of a room. It has a function of detecting a state change and transmitting the obtained sensor data to the data processing device 30 by data communication.

  The data processing device 30 includes an information processing device such as a server device or a personal computer. The data processing device 30 receives and accumulates sensor data transmitted from the user sensor node 10 and the environmental sensor node 20 through data communication, and performs processing on the sensor data. It has a function to perform information processing.

  In the present embodiment, in the environmental sensor node 20, sensor data related to the state change is transmitted to the data processing device 30 according to the environmental state change detected by its own environmental sensor, and is transmitted to each of the user sensor nodes 10. In response to the measurement instruction from the environment sensor node 20, the user sensor node 10 measures the state of the user with its own user sensor, and transmits the obtained sensor data to the data processing device 30. It is what you do.

[User sensor node]
Next, the configuration of the user sensor node 10 according to the present embodiment will be described in detail with reference to FIG.
The user sensor node 10 includes a user sensor 11, a user sensor communication unit 12, an environment sensor communication unit 13, a storage unit 14, and a control unit 15 as main functional units.

  The user sensor 11 is a general sensor that measures a physical quantity indicating a user state, such as a myoelectric potential sensor or an acceleration sensor. Specifically, a sensor that can grasp in detail the muscular strength, delicate motion, and biological signals such as heartbeat and pulse is preferable.

  The user sensor communication unit 12 includes a dedicated communication circuit and has a function of performing wireless data communication with the data processing device 30. A specific example of the user sensor communication unit 12 is preferably a wireless module capable of performing high-speed wireless data communication and performing data communication based on a wireless system such as a wireless LAN or Bluetooth (registered trademark).

  The environment sensor communication unit 13 includes a dedicated communication circuit and has a function of performing wireless data communication with the data processing device 30 and the environment sensor node 20. The environment sensor communication unit 13 may be a wireless module for low-speed wireless data communication, such as a specific low power wireless, weak wireless, ZigBee (registered trademark), in addition to a wireless LAN and Bluetooth.

  The storage unit 14 includes a semiconductor memory and has a function of storing various processing information and programs such as an ID for identifying the user sensor node 10 and the user sensor 11 in addition to the physical quantity measured by the user sensor 11. Yes.

  The control unit 15 controls the user sensor 11 according to the measurement instruction from the environment sensor node 20 received by the environment sensor communication unit 13 to measure the physical quantity indicating the state of the user, and the obtained measurement result and the user A function of executing measurement processing for transmitting sensor data including the ID of the sensor node 10 or the user sensor 11 and time information at the time of measurement measured by the control unit 15 from the user sensor communication unit 12 to the data processing device 30. And a function to stop the measurement process in response to a measurement stop instruction from the data processing device 30 received by the user sensor communication unit 12.

  The control unit 15 includes a microprocessor such as a CPU and its peripheral circuits, and includes an arithmetic processing unit that implements various processing units by reading a program from the storage unit 14 and executing the program.

  The user sensor node 10 is composed of a small electronic device attached to the user. For this reason, it is desirable that the battery is driven and is shaped like a clothes type, a wristband type or a wristwatch type so as not to feel uncomfortable. A user usually wears two or more user sensor nodes 10 and measures biological signals of two or more different parts.

[Environmental sensor node]
Next, the configuration of the environmental sensor node 20 according to the present exemplary embodiment will be described in detail with reference to FIG.
The environmental sensor node 20 includes an environmental sensor 21, an environmental sensor communication unit 23, a storage unit 24, and a control unit 25 as main functional units.

  The environment sensor 21 is a general sensor that detects a change in the state of the environment where the user exists, such as a contact sensor, a vibration sensor, a human sensor, or the like that detects an action by the user such as an operation of a device or an object. Sensor.

  The environment sensor communication unit 23 includes a dedicated communication circuit and has a function of performing wireless data communication with the data processing device 30 and the environment sensor node 20. The environment sensor communication unit 23 may be a wireless module for low-speed wireless data communication, such as a specific low power wireless, weak wireless, ZigBee, etc., in addition to a wireless LAN and Bluetooth. Since the operating speed of the environmental sensor 21 is low, relatively low-speed wireless communication can be used for the environmental sensor communication unit 23.

  The storage unit 24 includes a semiconductor memory and has a function of storing various processing information and programs such as an ID for identifying the environmental sensor node 20 and the environmental sensor 21 in addition to the state change detected by the environmental sensor 21. ing.

In accordance with the environmental state change detected by the environmental sensor 21, the control unit 25 detects the detection result indicating the state change, the ID of the environmental sensor node 20 or the environmental sensor 21, and the detection time measured by the control unit 25. Is transmitted from the environmental sensor communication unit 23 to the data processing device 30 and a measurement instruction for instructing the state measurement of the user 50 is transmitted from the environmental sensor communication unit 23 to each user sensor node 10. It has the function to do.
The control unit 15 includes a microprocessor such as a CPU and its peripheral circuits, and includes an arithmetic processing unit that implements various processing units by reading a program from the storage unit 14 and executing the program.

  The environmental sensor node 20 is installed in an environment where a user to be measured exists. At this time, if the environmental sensor node 20 can be fixed at a specific location, a commercial power source can be used. On the other hand, when the environmental sensor node 20 is attached to a moving object, it is driven by a battery. In this case, the data collection cycle is long and the power consumption of the sensor is small, so long-term operation is possible. .

[Data processing device]
Next, the configuration of the environmental sensor node 20 according to the present exemplary embodiment will be described in detail with reference to FIG.
The data processing device 30 is provided with a user sensor communication unit 32, an environment sensor communication unit 33, a storage unit 34, and a control unit 35 as main functional units.

  The user sensor communication unit 32 includes a dedicated communication circuit and has a function of performing wireless data communication with the user sensor node 10. A specific example of the user sensor communication unit 32 is preferably a wireless module capable of performing high-speed wireless data communication and performing data communication based on a wireless system such as a wireless LAN or Bluetooth.

  The environment sensor communication unit 33 includes a dedicated communication circuit and has a function of performing wireless data communication with the environment sensor node 20 and the user sensor node 10. The environmental sensor communication unit 33 may be a wireless module for low-speed wireless data communication, such as a specific low power wireless, weak wireless, and ZigBee, in addition to a wireless LAN and Bluetooth.

  The storage unit 34 includes a hard disk and a semiconductor memory, and has a function of storing various processing information and programs such as sensor data transmitted from the user sensor node 10 and the environment sensor node 20.

  The control unit 35 controls the user sensor communication unit 32 and the environmental sensor communication unit 33, receives sensor data transmitted from the user sensor node 10 and the environmental sensor node 20, and accumulates them in the storage unit 34; After receiving sensor data from the user sensor node 10, the user sensor communication unit 32 has a function of transmitting a measurement stop instruction to the user sensor node 10.

  The control unit 35 includes a microprocessor such as a CPU and its peripheral circuits, and includes an arithmetic processing unit that implements various processing units by reading a program from the storage unit 34 and executing the program.

[Operation of First Embodiment]
Next, the operation of the state measurement system according to this exemplary embodiment will be described with reference to FIG. FIG. 2 is a sequence diagram illustrating the operation of the state measurement system according to the first embodiment.
Here, as shown in FIG. 1, a plurality of user sensor nodes 10 are attached to a user 50, and one environment sensor node 20 is installed in an environment where the user 50 exists. To do. In the initial state, the user sensor 11 of the user sensor node 10 is not operating and is in a measurement stopped state.

  First, when the environmental sensor node 20 detects a change in the state of the environment such as contact, grasp, operation, or presence of the user 50 (step 100), the control unit 25 of the environmental sensor node 20 relates to this state change. The sensor data is transmitted from the environmental sensor communication unit 23 to the data processing device 30 (step 101), and a measurement instruction for instructing the state measurement of the user 50 is transmitted from the environmental sensor communication unit 23 to each user sensor node 10 (step). 102). At this time, the sensor data transmitted to the data processing device 30 may be transmitted to each user sensor node 10 as a measurement instruction.

The control unit 35 of the data processing device 30 receives sensor data from the environmental sensor node 20 through the environmental sensor communication unit 33 and accumulates it in the storage unit 34 (step 103).
When the control unit 15 of each user sensor node 10 receives the measurement instruction from the environmental sensor node 20 by the environmental sensor communication unit 33, the user sensor 11 measures the state of the user 50 (step 104). The sensor data is transmitted from the user sensor communication unit 12 to the data processing device 30 (step 105).

The control unit 35 of the data processing device 30 receives the sensor data from each user sensor node 10 through the user sensor communication unit 32 and accumulates it in the storage unit 34 (step 106). Thereafter, the control unit 35 transmits a measurement stop instruction to each user sensor node 10 through the user sensor communication unit 32 (step 107).
When the user sensor communication unit 12 receives a measurement stop instruction from the data processing device 30 via the user sensor communication unit 12, the control unit 15 of each user sensor node 10 stops the measurement by the user sensor 11 (step 108).

FIG. 3 is a configuration example of the state measurement system. FIG. 4 is a timing chart illustrating an operation example of the state measurement system.
FIG. 3 shows an arrangement example of the environmental sensor nodes E1 to E6 in the living room and the user sensor nodes U1 and U2 attached to the user. In this state measurement system, the user sensor nodes U1 and U2 are intended to accurately sense how a user operates an object with a myoelectric potential sensor.

  As the user sensor nodes U1 and U2, for example, a myoelectric potential sensor or an acceleration sensor is used. If these sensors are attached to the arm, it is possible to sense the force and movement of the arm. Here, two user sensor nodes U1 and U2 are attached to both arms of one user. Myoelectric potential sensors and acceleration sensors require high-speed sampling and must be synchronized between user sensor nodes U1 and U2. That is, data must be acquired at exactly the same time.

As the sensors of the environmental sensor nodes E1 to E6, for example, a contact sensor that detects contact by the user, a human sensor that detects approach to the vicinity, or the like is used. What detects the opening and closing of a door and what detects the switch ON-OFF of illumination or an air conditioning are also included.
As shown in FIG. 4, when the environmental sensor nodes E1 to E6 detect a change in the state of the room with the sensors, the environmental sensor nodes E1 to E6 transmit sensor data to a data processing device (not shown) and also send measurement instructions to the user sensor nodes U1 and U2. Send to. Here, the sensor of the environment sensor node E5 includes a contact sensor attached to an object operated by the user.

  When the user operates an object, the environmental sensor node E5 detects this, and the user sensor nodes U1 and U2 simultaneously start measurement, and accurately sense the movement of both arms of the user. At this time, the user sensor nodes U1 and U2 transmit the sensor data including the time information at the time of measurement, the obtained physical quantity, and the ID to the data processing device simultaneously with the start of the measurement. U1 and U2 data can be synchronized even if a time lag occurs until the data arrives at the data processor 30.

[Effect of the first embodiment]
As described above, according to the present embodiment, in the environmental sensor node 20, in accordance with the environmental state change detected by its own environmental sensor, sensor data related to the state change is transmitted to the data processing device 30, and the user sensor node The user sensor node 10 measures the state of the user with its own user sensor in accordance with the measurement instruction from the environmental sensor node 20, and the obtained sensor data is subjected to data processing. The data is transmitted to the device 30.

  Thereby, when a change in the state of the environment is detected in the environment sensor node 20, a plurality of sensors attached to the user can be operated at high speed in synchronization with the occurrence of the event. Therefore, the user 50's state is simultaneously measured by each user sensor 11 and the obtained sensor data is transmitted to the data processing device 30. As a result, the user's state at the time of the event occurrence is measured in a multifaceted manner. It becomes possible.

  In the present embodiment, since a measurement instruction is directly transmitted from the environmental sensor node 20 to the user sensor node 10, detection of a state change in the environmental sensor node 20, that is, an event occurrence timing is not delayed. The user sensor node 10 can start measurement of the user, and extremely effective sensor data can be obtained.

[Second Embodiment]
Next, a state measurement system according to a second embodiment of the present invention will be described.
In the first embodiment, a case where a measurement instruction is transmitted from the environmental sensor node 20 to each user sensor node 10 has been described as an example. In the present embodiment, a case where a measurement instruction is transmitted from the data processing device 30 to each user sensor node 10 will be described.

In the present embodiment, the control unit 35 of the data processing device 30 responds to the sensor data from the environmental sensor node 20 received by the environmental sensor communication unit 33 from the user sensor communication unit 32 to each user sensor node 10. It has a function to transmit measurement instructions.
Further, the control unit 15 of the user sensor node 10 controls the user sensor 11 according to the measurement instruction from the data processing device 30 received by the user sensor communication unit 12 to measure the physical quantity indicating the user state. It has a function of executing a measurement process in which sensor data including the obtained measurement results and the IDs of the user sensor node 10 and the user sensor 11 are transmitted from the user sensor communication unit 12 to the data processing device 30.

Note that the function of transmitting a measurement instruction to each user sensor node 10 in the control unit 25 of the environmental sensor node 20 is not necessary.
In the present embodiment, the configurations of the user sensor node 10, the environmental sensor node 20, and the data processing device 30 other than those described above are the same as those of the first embodiment described above, and detailed description thereof will be given here. Is omitted.

[Operation of Second Embodiment]
Next, with reference to FIG. 5, operation | movement of the state measurement system concerning this Embodiment is demonstrated. FIG. 5 is a sequence diagram showing the operation of the state measurement system according to the second embodiment, and the same or equivalent parts as in FIG.
Here, as shown in FIG. 1, a plurality of user sensor nodes 10 are attached to a user 50, and one environment sensor node 20 is installed in an environment where the user 50 exists. To do. In the initial state, the user sensor 11 of the user sensor node 10 is not operating and is in a measurement stopped state.

  First, when the environmental sensor node 20 detects a change in the state of the environment such as contact, grasp, operation, or presence of the user 50 (step 100), the control unit 25 of the environmental sensor node 20 relates to this state change. The sensor data is transmitted from the environmental sensor communication unit 23 to the data processing device 30 (step 101). At this time, a measurement instruction is not transmitted from the environmental sensor node 20 to each user sensor node 10.

  The control unit 35 of the data processing device 30 receives the sensor data from the environmental sensor node 20 through the environmental sensor communication unit 33 and stores it in the storage unit 34 (step 103), and each user sensor from the user sensor communication unit 32. A measurement instruction is transmitted to the node 10 (step 110).

  When the user sensor communication unit 12 receives a measurement instruction from the environment sensor node 20 via the user sensor communication unit 12, the control unit 15 of each user sensor node 10 measures the state of the user 50 with the user sensor 11 (step 104). The sensor data is transmitted from the user sensor communication unit 12 to the data processing device 30 (step 105). Thereafter, the control unit 15 of each user sensor node 10 repeatedly executes the measurement process including Step 104 and Step 105.

The control unit 35 of the data processing device 30 sequentially receives sensor data from each user sensor node 10 through the user sensor communication unit 32 and accumulates it in the storage unit 34 (step 106). Thereafter, the control unit 35 transmits a measurement stop instruction to each user sensor node 10 through the user sensor communication unit 32 when desired user data is obtained (step 107).
When the user sensor communication unit 12 receives a measurement stop instruction from the data processing device 30 via the user sensor communication unit 12, the control unit 15 of each user sensor node 10 stops the measurement by the user sensor 11 (step 108).

[Effect of the second embodiment]
As described above, in the present embodiment, the environmental sensor node 20 does not transmit a measurement instruction to the user sensor node 10 in accordance with the state change detected by the environmental sensor 21, and only to the data processing device 30. Sensor data related to the state change is transmitted, and the data processing device transmits a measurement instruction to each of the user sensor nodes 10 in response to reception of the sensor data related to the state change. The user sensor node 10 performs data processing. In response to a measurement instruction from the device 30, the user sensor 11 measures the state of the user and transmits the obtained sensor data to the data processing device 30.

Therefore, it is not necessary for the user sensor node 10 to perform data communication with the environmental sensor node 20, so that the environmental sensor communication unit 13 can be omitted, which leads to downsizing and further cost reduction of the user sensor node 10.
In addition, it is not necessary to directly send a measurement instruction from the environmental sensor node 20 to each user sensor node 10, and the processing load on the environmental sensor node 20 can be reduced. For this reason, power consumption at the environmental sensor node 20 can be reduced. In particular, when the environmental sensor node 20 is battery-driven, it is possible to extend the operation time and downsize the battery.

[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.

  Moreover, although each embodiment demonstrated as an example the case where the environmental sensor communication part was provided separately from the user sensor communication part, it is not limited to this, It applies to the application to which the state measurement system 1 is applied. Accordingly, only one of the environment sensor communication unit and the user sensor communication unit may be commonly used by the user sensor node 10, the environment sensor node 20, and the data processing device 30.

  Further, in each embodiment, the user sensor node 10 sequentially measures the state of the user by the user sensor 11 according to the measurement instruction, and sequentially transmits the user data to the data processing device 30. The case of stopping in response to the measurement stop instruction has been described, but the processing related to the measurement stop is not limited to this.

  For example, the control unit 15 of the user sensor node 10 may monitor the elapsed time from the start of measurement and autonomously stop the measurement process when a certain period has elapsed. The control unit 15 of the user sensor node 10 may measure the user state once by the user sensor 11 and autonomously stop the measurement process when the user data is transmitted to the data processing device 30. .

Alternatively, the control unit 15 of the user sensor node 10 measures the state of the user with the user sensor 11 at regular intervals and transmits user data, and autonomously stops the measurement process when the measurement process is repeated a predetermined number of times. May be.
In the user sensor node 10, when the user sensor 11 repeatedly measures the user state several times, the plurality of measurement results are temporarily stored in the storage unit 14, and then the plurality of measurement results are collectively collected. One sensor data may be transmitted to the data processing device 30.

  DESCRIPTION OF SYMBOLS 1 ... State measurement system, 10 ... User sensor node, 11 ... User sensor, 12 ... User sensor communication part, 13 ... Environmental sensor communication part, 14 ... Memory | storage part, 15 ... Control part, 20 ... Environmental sensor node, 21 ... Environment Sensor, 23 ... Environmental sensor communication unit, 24 ... Storage unit, 25 ... Control unit, 30 ... Data processing device, 32 ... User sensor communication unit, 33 ... Environmental sensor communication unit, 34 ... Storage unit, 35 ... Control unit, 50 …User.

Claims (4)

A plurality of user sensor nodes that are attached to a user, measure the state of the user with a sensor, and transmit the obtained sensor data;
An environmental sensor node that is installed in an environment where the user exists, detects a change in the state of the environment including the movement and presence / absence of the user, and transmits the obtained sensor data;
A data processing device for receiving and storing sensor data transmitted from these user sensor nodes and environmental sensor nodes, and
In response to the state change of the environment detected by the sensor, the environment sensor node transmits sensor data related to the state change to the data processing device and transmits a measurement instruction to each of the user sensor nodes. And
The user sensor node measures the state of the user with the sensor in response to the measurement instruction from the environmental sensor node, and transmits the obtained sensor data to the data processing device. system. The state measurement system according to claim 1,
The environmental sensor node transmits sensor data related to the state change only to the data processing device without transmitting the measurement instruction to the user sensor node according to the state change detected by the sensor,
The data processing device transmits a measurement instruction to each of the user sensor nodes in response to reception of sensor data related to the state change,
The user sensor node measures the state of the user with the sensor in response to the measurement instruction from the data processing device, and transmits the obtained sensor data to the data processing device. system. A plurality of user sensor nodes that are attached to a user, measure the state of the user with a sensor, and transmit the obtained sensor data;
An environmental sensor node that is installed in an environment where the user exists, detects a change in the state of the environment including the movement and presence / absence of the user, and transmits the obtained sensor data;
A state measurement used in a state measurement system comprising a data processing device that receives and accumulates sensor data transmitted from these user sensor nodes and environmental sensor nodes,
The environmental sensor node transmits sensor data related to the state change to the data processing device according to the state change of the environment detected by the sensor, and transmits a measurement instruction to each of the user sensor nodes. And steps to
The user sensor node includes a step of measuring the state of the user by the sensor in response to the measurement instruction from the environment sensor node, and transmitting the obtained sensor data to the data processing device. A state measurement method. The state measuring method according to claim 3,
The environmental sensor node transmits sensor data related to the state change only to the data processing device without transmitting the measurement instruction to the user sensor node according to the state change detected by the sensor. When,
The data processing device transmitting a measurement instruction to each of the user sensor nodes in response to receiving sensor data relating to the state change;
The user sensor node further comprising: measuring the state of the user with the sensor in response to the measurement instruction from the data processing device; and transmitting the obtained sensor data to the data processing device. A characteristic state measurement method.

Images