JP2015133676A5

JP2015133676A5 -

Info

Publication number: JP2015133676A5
Application number: JP2014005422A
Authority: JP
Filing date: 2014-01-15
Publication date: 2017-02-23
Anticipated expiration: 2034-01-15

Claims

A plurality of terminals that measure observation information independently of each other;
A server for collecting the measurement results,
The server includes a server-side transmission / reception circuit that simultaneously transmits an information transmission request signal to the plurality of terminals,
The information transmission request signal includes a code number that is different each time the information transmission request signal is transmitted from the server in a predetermined format that can be read by the plurality of terminals that receive the information transmission request signal.
Each of the plurality of terminals is
A measurement unit for performing the measurement;
A terminal-side transceiver circuit that receives the information transmission request signal;
A conversion unit that converts the measured observation information into a combination of a plurality of radio physical quantities, according to the received information transmission request signal and using a conversion formula according to the code number;
In each of the terminals, the terminal-side transmission / reception circuit generates a unit signal having a frequency included in the combination at a time included in the combination, and transmits the unit signal to the server.
The server-side transmitting / receiving circuit receives the aggregate of unit signals as a received signal,
The server
A database for storing the received signal received for each corresponding information transmission request signal;
Based on the plurality of received signals stored corresponding to the plurality of information transmission request signals, respectively, and using the inverse transformation formula corresponding to the code number, the arrangement of the plurality of terminals and the measured A wireless sensor network system further comprising a restoration circuit for estimating a combination with observation information.

The wireless sensor network system according to claim 1,
The observation information is
A first coordinate value and a second coordinate value indicating the position of each terminal;
Each of the terminals includes an observation value obtained by measuring a predetermined observation object at the position,
The combination of the radio physical quantities is
The first time,
Second time,
Including one frequency,
The converter is
A time-axis mapping circuit that converts the first coordinate value and the second coordinate value into the first time and the second time, respectively.
A wireless sensor network system comprising: a frequency axis mapping circuit that converts the observed value into the one frequency.

The wireless sensor network system according to claim 2,
The frequency axis mapping circuit includes:
A frequency axis shift circuit that varies the correspondence between the observed value before conversion and the one frequency after conversion according to the code number;
The restoration circuit is
The wireless sensor network system which calculates the measured value before the said conversion by performing the inverse conversion of the said fluctuation | variation according to the said code number to the frequency after the said conversion.

The wireless network system according to any one of claims 1 to 3,
The restoration circuit is
A wireless sensor network system for excluding, from the estimation target, the unit signals detected from coordinates whose probability that the unit signals are detected does not satisfy a predetermined detection probability threshold.

In the wireless network system according to any one of claims 1 to 4,
The restoration circuit is a wireless sensor network system that starts the estimation after the number of information transmission requests reaches a predetermined threshold.

The wireless sensor network system according to claim 5,
A wireless sensor network system that uses the information transmission request count as the code number.

In the wireless sensor network system according to any one of claims 1 to 6,
The receiving server is
Further comprising a memory that stores in advance location information of the plurality of terminals,
The restoration circuit is a wireless sensor network system that performs the estimation with reference to the position information stored in the memory.

In the wireless sensor network system according to any one of claims 1 to 7,
The terminal-side transmitting / receiving circuit generates and transmits the unit signal by an OFDM (Orthogonal Frequency-Division Multiplexing) scheme,
The server-side transceiver circuit receives the received signal by the OFDM method.

Multiple terminals independently measuring each other's observation information,
A server broadcasts an information transmission request signal to the plurality of terminals;
Each of the plurality of terminals receives the information transmission request signal;
Each of the plurality of terminals converts the measured observation information into a combination of a plurality of radio physical quantities in response to the information transmission request signal;
The plurality of terminals, at a time included in the combination, transmits a unit signal having a frequency included in the combination to the server;
The server receives the aggregate of unit signals as a received signal;
The server stores the received signal received for each corresponding information transmission request signal;
The server estimates a combination of the arrangement of the plurality of terminals and the measured observation information based on the plurality of received signals stored corresponding to the plurality of information transmission request signals, respectively. Equipped,
The simultaneous transmission of the information transmission request signal,
Including a different code number for each transmission in a predetermined format in the information request signal,
Receiving the information request signal comprises:
Reading the code number from the information request signal;
The converting is
Performing the conversion using a conversion formula corresponding to the code number,
The estimation is
An information batch collection method comprising performing the estimation using an inverse transformation formula corresponding to the code number.

The server side information batch collection program for making the said server perform each step which the said server performs among the information batch collection methods of Claim 9.

The terminal side information batch collection program for making each said terminal perform each step which said each terminal performs among the information batch collection methods of Claim 9.

  A transmission / reception circuit for simultaneously transmitting an information transmission request signal to a plurality of terminals, and receiving a set of a plurality of unit signals transmitted from the plurality of terminals as a response to the information transmission request signal;
  A database for storing the received signal in association with each information transmission request signal;
  A restoration circuit for estimating observation information by the plurality of terminals included in the received signal;
Comprising
  The information transmission request signal includes a code number that is different each time the information transmission request signal is transmitted from the server in a predetermined format that can be read by the plurality of terminals that receive the information transmission request signal.
  The restoration circuit is configured to transmit a combination of a plurality of reception times at which a plurality of unit signals included in the reception signal are received and a plurality of frequencies respectively included in the plurality of unit signals to the information transmission corresponding to the reception signals. Estimating the location information of the plurality of terminals and the distribution of the observation information using an inverse transformation formula corresponding to the code number included in the request signal
  server.

  A measurement unit for measuring observation information;
  A transmission / reception circuit for receiving an information transmission request signal including a code number;
  A conversion unit that converts the measured observation information into a combination of a plurality of radio physical quantities in accordance with the received information transmission request signal and using a conversion formula corresponding to the code number;
Comprising
  The observation information is
  First coordinate value and second coordinate value indicating the position where the measurement is performed
Including
  The transmission / reception circuit generates and transmits a first unit signal having a frequency included in the combination at a first time included in the combination,
  The transmission / reception circuit generates and transmits a second unit signal having the frequency at a second time included in the combination.
  Terminal.