摘要:
A sensor node (101-1) has no subsequent assignment-destination sensor node (101), when the execution of data processing is assigned to a sensor node (101-h) that can directly communicate with a parent device (102) (dashed-lined arrow), and the data processing is not completed by the assignment-destination sensor node (101-h). Thus, when unable to execute the data processing, the sensor node (101-1) requests a sensor node (101-m) that requires plural hops in communicating with the parent device (102) (solid lined arrow). Even when the data processing is not completed by the assignment-destination sensor node (101-m), the data processing can be completed by executing the data processing in stages by plural sensor nodes (101).
摘要:
A sensor node (101-i) is assumed to be able to execute any one among a first operation by which another sensor node (101) is requested to execute data process and if the request is not accepted the sensor node (101-i) starts executing the data processing after waiting for charging and a second operation by which the sensor node (101-i) starts executing the data processing after waiting for charging, without requesting the data processing to be executed. The sensor node (101-i) compares an expected value of a first time that elapses until execution is started by the sensor node (101-i) or the other sensor node (101) when the first operation is executed, and a second time that elapses until execution is started by the sensor node (101-i) when the second operation is executed. Based on the comparison result, the sensor node (101-i) executes among the first operation and the second operation, the operation for which the time that elapses until execution is started is shorter.
摘要:
A sensor node (101-k) detects an occurrence of sensing (ev) and judges whether data processing corresponding to the sensing (ev) will finish before an occurrence of sensing (ev) subsequent to the sensing (ev), based on a time interval when the occurrence of the sensing (ev) is detected. When determining that the data processing will finish, the sensor node (101-k) executes the data processing and transmits the execution result of the data processing to a first apparatus (101-1) directly communicable with the sensor node (101-k). When determining that the data processing will not finish, the sensor node (101-k) transmits, to the first apparatus (101-1), request information causing the first apparatus (101-1) to execute the data processing and to transmit the execution result of the data processing to a second apparatus directly communicable with the first apparatus (101-1).
摘要:
A sensor node (101-1) has no subsequent assignment-destination sensor node (101), when the execution of data processing is assigned to a sensor node (101-h) that can directly communicate with a parent device (102) (dashed-lined arrow), and the data processing is not completed by the assignment-destination sensor node (101-h). Thus, when unable to execute the data processing, the sensor node (101-1) requests a sensor node (101-m) that requires plural hops in communicating with the parent device (102) (solid lined arrow). Even when the data processing is not completed by the assignment-destination sensor node (101-m), the data processing can be completed by executing the data processing in stages by plural sensor nodes (101).
摘要:
A determining apparatus (110) obtains distance information that indicates distances between monitoring apparatuses (121 to 128) provided to encompass a given area in which wireless communications apparatuses (102) are scattered. The determining apparatus (110) causes a wireless signal to be transmitted and received between monitoring apparatus (121 to 128) by multi-hop communication among the wireless communications apparatuses (102). The determining apparatus (110) calculates an estimated distance between the monitoring apparatuses (121 to 128), based on the hop count of the wireless signal multi-hop communicated among the monitoring apparatuses (121 to 128). The determining apparatus (110) makes a determination concerning a vacant area (103) in which no wireless communications apparatus of a given area (101) is present, based on the distance indicated by the distance information and the calculated estimated distance.
摘要:
A sensor node (101-k) detects an occurrence of sensing (ev) and judges whether data processing corresponding to the sensing (ev) will finish before an occurrence of sensing (ev) subsequent to the sensing (ev), based on a time interval when the occurrence of the sensing (ev) is detected. When determining that the data processing will finish, the sensor node (101-k) executes the data processing and transmits the execution result of the data processing to a first apparatus (101-1) directly communicable with the sensor node (101-k). When determining that the data processing will not finish, the sensor node (101-k) transmits, to the first apparatus (101-1), request information causing the first apparatus (101-1) to execute the data processing and to transmit the execution result of the data processing to a second apparatus directly communicable with the first apparatus (101-1).
摘要:
Sensor nodes 101 are installed in the installation area A, detect displacement at each installation site, and process data. The sensor nodes 101 include a microprocessor 205 that generates self-identification information based on a combination of plural identification information included in calibration information transmitted by the calibration nodes 401, and self-identification generation information that is included in the calibration information and for identifying data processing apparatuses, respectively; nonvolatile memory 208 that retains the self-identification information; and a wireless communications unit 203 that receives the calibration information from the calibration nodes 401 and performs transmission and reception of data with an adjacent data processing apparatus 101 installed in the installation area.
摘要:
Sensor nodes 101 are installed in the installation area A, detect displacement at each installation site, and process data. The sensor nodes 101 include a microprocessor 205 that generates self-identification information based on a combination of plural identification information included in calibration information transmitted by the calibration nodes 401, and self-identification generation information that is included in the calibration information and for identifying data processing apparatuses, respectively; nonvolatile memory 208 that retains the self-identification information; and a wireless communications unit 203 that receives the calibration information from the calibration nodes 401 and performs transmission and reception of data with an adjacent data processing apparatus 101 installed in the installation area.
摘要:
A sensor node (101-i) is assumed to be able to execute any one among a first operation by which another sensor node (101) is requested to execute data process and if the request is not accepted the sensor node (101-i) starts executing the data processing after waiting for charging and a second operation by which the sensor node (101-i) starts executing the data processing after waiting for charging, without requesting the data processing to be executed. The sensor node (101-i) compares an expected value of a first time that elapses until execution is started by the sensor node (101-i) or the other sensor node (101) when the first operation is executed, and a second time that elapses until execution is started by the sensor node (101-i) when the second operation is executed. Based on the comparison result, the sensor node (101-i) executes among the first operation and the second operation, the operation for which the time that elapses until execution is started is shorter.