JP5281492B2 - Structure monitoring system and measuring device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a structure monitoring system which can collect measurement data obtained by sensors, without using a radio wave. <P>SOLUTION: The structure monitoring system MS includes: sensors S, S, attached to a structure; a measuring instrument M attached to the structure; and a portable data collection device D. The measuring instrument M includes: a measuring side light receiving means 15 for receiving light to generate power; and a measuring side light emitting means 16 for converting the measurement data obtained by the sensors S into an optical signal. The data collection device D includes a collecting side light receiving means 22 for converting the optical signal transmitted from the measuring side light emitting means 16 to an electric signal. The measuring instrument M performs optical wireless communication with the data collection device D by use of the power generated by the measuring side light receiving means 15. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a structure monitoring system and a measuring apparatus applied to a building structure, a civil engineering structure, and the like.

  Patent Document 1 discloses a technique for collecting data acquired by a sensor by attaching a sensor connected to a passive wireless IC tag to a load-bearing frame and performing wireless communication between the reception diagnostic apparatus and the wireless IC tag. ing.

JP 2006-250585 A

  In Patent Document 1, data is read by transmitting a radio wave toward a wireless IC tag. However, when the wireless IC tag is attached to a steel structure, the radio wave is reflected on the surface of the steel structure, and the data May not be read.

  From such a viewpoint, it is an object of the present invention to provide a structure monitoring system and a measurement apparatus that can collect measurement data acquired by a sensor without using radio waves.

A structure monitoring system according to the present invention for solving the above-mentioned problems is a structure comprising a plurality of sensors attached to a structure, a measuring device attached to the structure, and a portable data collection device. In the monitoring system, the measurement device includes a storage unit that stores measurement data acquired by each sensor, a measurement-side light receiving unit that receives light to generate power, and the measurement data acquired by each sensor. Measuring side light emitting means for converting into a signal, and the data collection device has a collection side light receiving means for converting an optical signal transmitted from the measurement side light emitting means into an electrical signal, The optical wireless communication is performed with the data collection device using the electric power generated by the measurement side light receiving means.

The measuring apparatus according to the present invention to solve the problems described above, is attached to the structure, a measuring device you equipped with external power or internal power supply, the power to a plurality of sensors attached to the structure measurement control means for controlling the supply, the storage means for storing the measurement data acquired by each sensor, the measuring-side light-receiving means for generating by receiving light, before Symbol optical signal measurement data acquired by each sensor And a measurement-side light emitting means for converting the data to the data collection device, and performing optical wireless communication with the data collection device using the electric power generated by the measurement-side light-receiving means.

  In the present invention, measurement data acquired by a sensor is collected by operating a measurement device using power obtained by photovoltaic power generation and performing optical wireless communication between the measurement device and the data collection device. According to the present invention, it is possible to obtain power necessary for optical wireless communication by irradiating light on the measurement side light receiving means of the measurement apparatus. Even in the case of being cut off, measurement data can be collected.

  The type of the structure to which the present invention is applicable is not limited, and can be applied to various building structures and civil engineering structures such as houses, multi-storey buildings, factory buildings, bridges, and tunnels.

  In addition, although the electric power obtained from the external power source connected to the measuring device or the internal power source (dry battery, storage battery, etc.) provided in the measuring device may be supplied to the sensor, the electric power generated by the measuring side light receiving means It may be supplied to the sensor. If the sensor is configured to acquire measurement data using the power generated by the light receiving means on the measurement side, the power supply to the measurement device may be interrupted due to a disaster, battery exhaustion, etc. Even if no power source or internal power source is provided, monitoring (measurement by a sensor) can be performed.

  The data collection device may be provided with a collection side light emitting means. The collection side light emitting means emits light toward the measurement side light receiving means of the measuring apparatus. In this case, the measurement-side light receiving means of the measurement device generates light by receiving light emitted from the collection-side light emission means of the data collection device. In this case, the measurement data is transferred to the data collection device simply by irradiating light from the collection side light emitting means provided in the data collection device to the measurement side light receiving means of the measurement device. Therefore, a dedicated projector or the like for starting up the measuring device is not necessary.

  The measurement apparatus may be provided with display means for displaying the measurement data. In this case, the display means is preferably composed of electronic paper that does not require power when holding a display image. If it does in this way, even if it is a case where the electric power supply to a measuring device is cut off, it will become possible to confirm measurement data visually.

  In the measurement side light receiving means, identification information of the measurement data may be converted into an optical signal together with the measurement data. If it does in this way, it will become possible to collect the discernment information with measurement data. The measurement data identification information is information for identifying (distinguishing) the measurement data. For example, the measurement data acquisition time, the position information and ID number of the sensor S from which the measurement data is acquired, and the measurement apparatus M Position information, an ID number of the measuring apparatus M, and the like.

Another structure monitoring system according to the present invention that solves the above problems includes a plurality of sensors attached to a structure, a plurality of measuring devices attached to the structure, and a portable data collection device. A structure monitoring system comprising: each of the measuring devices is capable of transmitting measurement data acquired by at least one of the sensors to the other measuring device, and at least one of the measuring devices is configured of each of the sensors. The data collection device comprising: storage means for storing the measurement data acquired in step 1; measurement side light receiving means for receiving light to generate power; and measurement side light emission means for converting each measurement data into an optical signal. Has a collection-side light receiving means for converting an optical signal transmitted from the measurement-side light-emitting means into an electrical signal, and at least one of the measurement devices is It was by using electric power for optical wireless communication with the data acquisition device, characterized in that.

  In this way, measurement data accumulated in each measurement device can be aggregated in a certain measurement device, so even if the measurement devices are scattered in various places in the structure, Measurement data can be collected efficiently. One of a plurality of measuring devices may be set as a “parent device”, and the measurement data accumulated in each of the plurality of measuring devices may be configured to be aggregated in the “parent device”. Two or more measuring devices may be set as “parent devices”, and the measurement data stored in each of the plurality of measuring devices may be aggregated in each parent device. If two or more “base units” are provided, even if a failure occurs in one base unit, other “base units” are used to collect measurement data obtained by multiple measurement devices. It becomes possible.

  According to the present invention, it is possible to collect measurement data even when the power supply to the measurement device is cut off due to a disaster, battery exhaustion, or the like.

It is a mimetic diagram showing a schematic structure of a structure monitoring system concerning an embodiment of the present invention. It is a functional block diagram of the structure monitoring system which concerns on embodiment of this invention. It is a schematic diagram which shows the modification of the structure monitoring system which concerns on embodiment of this invention.

  As shown in FIG. 1, the structure monitoring system MS according to the embodiment of the present invention includes sensors S, S,... Attached to the structure T, a measuring device M attached to the structure T, and a portable type. The data collection device D is configured. In addition, in this embodiment, although the case where the structure T is a multilayered building is illustrated, it is not the meaning which limits the application range of this invention.

  The sensor S directly or indirectly measures the current state of the structural frame (eg, column, beam, slab, wall, etc.) of the structure T. Each sensor S may be directly connected to the measuring apparatus M, or a plurality of sensors S, S,. Electric power necessary for the measurement is supplied from the measuring device M. The type of cascade connection sensor S is not limited. For example, in addition to strain gauges, various measuring instruments such as strain gauge conversion type, piezoelectric type, servo type (accelerometer, displacement meter, load meter (pressure gauge), etc.) DC voltage output type displacement meter, thermometer (thermocouple), etc.

  The measuring device M is attached to the outer wall of the structure T. In addition, as shown in FIG. 3, you may attach the measuring apparatus M inside the structure T. As shown in FIG. As shown in FIG. 2, the measuring apparatus M includes a switch box 11, a storage unit 12, a display unit 13, a measurement control unit 14, a measurement side light receiving unit 15, a measurement side light emitting unit 16, and a communication control unit. 17.

  The switch box 11 includes a connection terminal of a conductive wire extending from the sensor S, an amplifier circuit that amplifies a minute voltage (current) output from the sensor S, an A / D conversion circuit, and the like.

  The storage unit 12 includes measurement data acquired by the sensor S (voltage value output from the sensor S or information relating to a physical quantity obtained by multiplying the voltage value by a calibration coefficient) and identification information of the measurement data (acquisition of measurement data). The time, the position information and ID number of the sensor S from which the measurement data is acquired, the position information of the measuring device M, the ID number of the measuring device M, etc.) are stored, and a writable nonvolatile semiconductor memory (flash memory) It is comprised by. Note that a hard disk, an optical disk, or the like may be used as the storage unit 12.

  The display means 13 displays the measurement data acquired by the sensor S, the identification information of the measurement data, and the like. In the embodiment, the display means 13 is an electronic paper that does not require power when holding a display image. Become.

  The measurement control means 14 is acquired by the sensor S, a power control function for controlling power supply to the sensors S, S,..., A calibration function for calculating a predetermined physical quantity by multiplying a voltage value output from the sensor S by a calibration coefficient. A function for writing the measured data (the voltage value or the physical quantity output from the sensor S) into the storage means 12 together with the identification information, a function for reading the measurement data from the storage means 12, and image data to be displayed on the display means 13. It has a drawing function to generate.

  The measurement-side light receiving means 15 has a function of generating light by receiving light (that is, a function of generating power by the photovoltaic effect), a function of converting an optical signal transmitted from the data collection device D into an electric signal, and an obtained electric signal. Is output to the communication control means 17. The measurement-side light receiving means 15 of the present embodiment includes a light receiving element (or light receiving element array) 15a for photovoltaic power generation and a power feeding circuit for supplying power generated by the light receiving element 15a for photovoltaic power generation to components in the measuring apparatus M. (Not shown), a light receiving element for signal conversion (or a light receiving element array) 15b, and a demodulation circuit (not shown) for demodulating an electric signal output from the light receiving element for signal conversion 15b.

  The light receiving element 15a for photovoltaic power generation includes, for example, a photodiode, a phototransistor, a photo IC, a solar battery cell, and the like. In the present embodiment, a light receiving element that reacts favorably to light in the infrared region is used as the light receiving element 15a for photovoltaic generation, but a light receiving element that reacts favorably to light in the visible light region may be used. .

  The signal converting light receiving element 15b is made of, for example, a photodiode, a phototransistor, a photo IC, or the like. In the present embodiment, a light receiving element that responds favorably to light in the infrared region is used as the light receiving element 15b for signal conversion. However, a light receiving element that reacts favorably to light in the visible light region may be used. .

  The measurement-side light emitting means 16 converts the measurement data acquired by the sensor S and its identification information (hereinafter referred to as “measurement data etc.”) into an optical signal. The measurement-side light emitting means 16 of the present embodiment includes a modulation circuit that modulates measurement data and a light-emitting element 16a that emits light corresponding to an electrical signal output from the modulation circuit. The light emitting element 16a is made of, for example, a light emitting diode or a laser diode, and emits light in the infrared region. Note that the light emitting element 16a that emits light in the visible light region may be used.

  The communication control unit 17 determines whether or not the electric signal output from the measurement-side light receiving unit 15 includes a signal requesting data transmission (transmission request signal), and determines that the transmission request signal is included. In this case, the measurement data and the like are read from the storage unit 12 and the read measurement data and the like are output to the measurement side light emitting unit 16. Further, the communication control unit 17 determines whether or not the electrical signal output from the measurement-side light receiving unit 15 includes a signal (measurement request signal) for requesting monitoring (measurement by a sensor). If it is determined that it is included, the result is output to the measurement control means 14. That is, the communication control unit 17 has a function of determining whether or not a transmission request signal or a measurement request signal is included in the electrical signal output from the measurement-side light receiving unit 15, and reads measurement data from the storage unit 12. A function for outputting the read measurement data to the measurement side light emitting means 16, a function for outputting a measurement request signal to the measurement control means 14, and the like.

  The measuring apparatus M of the present embodiment includes at least one of an external power source and an internal power source (such as a dry battery or a storage battery) (hereinafter, referred to as “always power source”). However, if power is not always available from the power source due to a disaster or power failure, the power is generated by the power generated by the measurement light receiving means 14. That is, when the power supply from the power source is always continued, the measuring device M starts at every preset time interval and performs measurements with the sensors S, S,. While storing in the storage means 12 and displaying on the display means 14, when the power supply from the constant power supply is stopped or insufficient, it operates with the power generated by the measurement-side light receiving means 14 and collects data. Various processes are executed based on instructions from the device D.

  As shown in FIG. 1, the data collection device D includes a reader unit D1, a control unit D2, and an internal power supply (not shown).

  As shown in FIG. 2, the reader unit D <b> 1 includes a collection-side light emitting unit 21 that can emit light toward the measurement-side light-receiving unit 15, and a collection side that converts an optical signal transmitted from the measurement-side light emitting unit 16 into an electrical signal. The light receiving means 22 is provided.

  The collection-side light emitting means 21 has a function of converting the electrical signal output from the control unit D2 into an optical signal. The collection-side light emitting means 21 of this embodiment includes a modulation circuit (not shown) that modulates a transmission request signal and a measurement request signal output from the control unit D2, and an electrical signal output from the modulation circuit or directly from the control unit D2. And a light emitting element (or light emitting element array) 21a that emits light corresponding to the output electric signal.

  The light emitting element 21a is made of, for example, a light emitting diode or a laser diode. In the present embodiment, a light emitting element that emits light in the infrared region in response to the use of a light receiving element that reacts favorably with light in the infrared region for the light receiving element 15a for power generation and the light receiving element 15b for signal conversion. 21a is used, but when a light receiving element that reacts favorably with light in the visible light region is used for the light receiving element 15a for power generation and the light receiving element 15b for signal conversion, the light emitting element 21a that emits light in the visible light region Is used.

  The collection-side light receiving means 22 has a function of converting an optical signal transmitted from the measuring device M into an electric signal (measurement data or the like), a function of outputting the obtained electric signal to the control unit D2, and the like. The collection-side light receiving means 22 of the present embodiment includes a light receiving element (or light receiving element array) 22a and a demodulation circuit (not shown) that demodulates the electrical signal output from the light receiving element 22a.

  The light receiving element 22a includes a photodiode, a phototransistor, a photo IC, and the like. In the present embodiment, the light receiving element 22a that reacts favorably with the light in the infrared region is used corresponding to the light emitting element 16a that emits the light in the infrared region, but the light emitting element 16a that emits the light in the visible light region is used. In this case, the light receiving element 22a that reacts favorably with light in the visible light region is used.

  The control unit D2 includes an input unit 23, a collection control unit 24, a storage unit 25, a display unit 26, and a communication unit 27.

  The input unit 23 is a unit for inputting an operator instruction such as “start collection” or “start measurement”, and includes, for example, a keyboard and operation buttons.

  The collection control unit 24 has a function of generating an electrical signal such as a trigger signal, a transmission request signal, and a measurement request signal in accordance with an operator instruction input via the input unit 23, and the generated electrical signal to the collection side light emitting unit 21. It has a function of outputting, a function of writing an electrical signal (measurement data, etc.) output from the collection-side light receiving means 22 into the storage means 25, a drawing function of generating image data to be displayed on the display means 26, and the like.

  The storage unit 25 stores the measurement data output from the collection-side light receiving unit 22 and is configured by a writable nonvolatile semiconductor memory (flash memory). Note that a hard disk, an optical disk, or the like may be used as the storage means 25.

  The display means 26 displays the measurement data stored in the storage means 25, the status of data collection, and the like, and is configured by a liquid crystal display, electronic paper, or the like.

  The communication unit 27 is connected to the communication line N, and transmits the measurement data stored in the storage unit 25 to the management computer C connected to the communication line N. The communication line N may be wired (such as an optical line or a telephone line) or wireless.

  Next, a method of using the structure monitoring system MS in a situation where the power supply to the measuring device M by the constant power supply is cut off will be described.

  First, the operator carrying the data collection device D is directed to the structure T (see FIG. 1). When it arrives at the installation location of the measuring device M, the reader unit D1 of the data collecting device D is brought into contact with the measuring device M, or the measuring side light receiving means 15 and the measuring side light emitting means 16 of the measuring device M collect data. It is made to face while facing the measuring device M until bidirectional communication with the reader unit D1 of the device D becomes possible.

  Next, an instruction “start collection” or “start measurement” is input via the input unit 23. For example, when the operator inputs an instruction of “start collection”, the collection control unit 24 generates a trigger signal and a transmission request signal and outputs them to the collection side light emitting unit 21. The trigger signal is generated prior to the transmission request signal.

  The trigger signal and the transmission request signal output to the collection-side light emitting means 21 are modulated by the modulation circuit, converted into an optical signal by the light-emitting element 21a, and irradiated to the measurement-side light receiving means 15 of the measuring apparatus M. .

  When light corresponding to the trigger signal (optical signal) reaches the measurement-side light receiving means 15, electric power necessary for the initial operation of optical wireless communication is generated by the photovoltaic effect of the light receiving element 15a for photovoltaic power generation, which is not shown. Power is supplied to the communication control means 17 and the like via the power supply circuit. Following the light corresponding to the trigger signal (optical signal), the optical signal corresponding to the transmission request signal reaches the measurement-side light receiving means 15, but by the time the optical signal reaches the measurement-side light receiving means 15, the optical wireless Since the electric power necessary for the initial operation of the communication is generated, when the optical signal corresponding to the transmission request signal reaches the measurement-side light receiving means 15, it is converted into an electric signal by the signal converting light receiving element 15b, and the demodulation circuit Is demodulated into a transmission request signal and output to the communication control means 17. The communication control means 17 is also operated by the power generated by the measurement side light receiving means 15. Incidentally, the light receiving element 15a for photovoltaic power generation also generates power by receiving light (optical signal) corresponding to the transmission request signal.

  When a transmission request signal is input to the communication control unit 17, measurement data and the like are read from the storage unit 12, and the read measurement data and the like are output to the measurement side light emitting unit 16. The measurement side light emitting means 16 is also operated by the electric power generated by the measurement side light receiving means 15.

  When measurement data or the like is input to the measurement side light emitting means 16, it is modulated by the modulation circuit, converted into an optical signal by the light emitting element 16a, and transmitted to the collection side light receiving means 22 of the data collection device D.

  When light (optical signal) corresponding to measurement data or the like reaches the collection-side light receiving means 22, it is converted into an electrical signal by the light receiving element 22a, demodulated into measurement data or the like by the demodulation circuit, and output to the collection control means 24. The

  Measurement data and the like input to the collection control unit 24 are written in the storage unit 25. The measurement data and the like stored in the storage means 25 are transmitted to the management computer C via the communication line N as necessary.

  Note that, in a situation where the power supply to the measuring device M by the constant power supply is cut off, when it is desired to monitor the latest state of the structure T, an instruction to “start measurement” is input via the input means 23.

  When the operator inputs a “measurement start” instruction, a trigger signal and a measurement request signal are generated by the collection control unit 24 and output to the collection-side light emitting unit 21. The trigger signal is generated prior to the measurement request signal.

  The trigger signal and the measurement request signal output to the collection-side light emitting means 21 are modulated by the modulation circuit, converted into an optical signal by the light-emitting element, and irradiated to the measurement-side light receiving means 15 of the measuring apparatus M.

  When the light corresponding to the trigger signal (optical signal) reaches the measurement-side light receiving means 15, the power required for the initial operation of optical wireless communication and the power required for the measurement (monitoring) by the sensor S are generated, and the communication control means 17. Etc. are fed. When the optical signal corresponding to the measurement request signal reaches the measurement-side light receiving means 15 following the light (optical signal) corresponding to the trigger signal, it is converted into an electrical signal by the signal conversion light receiving element 15b and transmitted by the demodulation circuit. Demodulated to a request signal and output to the communication control means 17.

  When a measurement request signal is input to the communication control means 17, it is output to the measurement control means 14, and a series of operations such as measurement by the sensor S and writing of the acquired measurement data to the storage means 12 are executed.

  When the latest measurement data and the like are stored in the storage unit 12, the measurement data and the like stored so far are read out, and the read measurement data and the like are output to the measurement side light emitting unit 16. The subsequent operation is the same as when “start collection” is instructed.

  As described above, in the structure monitoring system MS according to the present embodiment, optical wireless communication is performed with the data collection device D using the power generated by the measurement-side light receiving unit 15 and acquired by the sensor S. The measured data and the identification information of the measured data are transferred to the data collection device D by optical wireless communication.

  According to the structure monitoring system MS according to the present embodiment described above, power necessary for optical wireless communication can be obtained by irradiating the measurement-side light receiving means 15 with light. Even when the power supply by is cut off, measurement data and the like can be transferred to the data collection device D and collected.

  Further, since the sensor S acquires the measurement data using the power generated by the measurement-side light receiving means 15, even if the power supply to the measurement device by the constant power source is cut off, the sensor S Measurement (monitoring) can be performed.

  Further, since the data collection device D includes the collection-side light emitting means 21, measurement data and the like can be collected simply by carrying the data collection device D alone and bringing it close to the measurement device M. That is, according to the structure monitoring system MS according to the present embodiment, a dedicated projector or the like for operating the measuring device M becomes unnecessary.

  Furthermore, in this embodiment, since the display means 13 of the measuring apparatus M is an electronic paper, it is possible to visually confirm measurement data before power supply is cut off.

  Note that the configurations of the measurement apparatus M and the data collection apparatus D described above may be changed as appropriate.

  For example, in the above-described embodiment, the case where the light-receiving element 15a for photovoltaic power generation and the light-receiving element 15b for signal conversion are provided in the measurement-side light receiving means 15 of the measuring apparatus M is exemplified. The array may be configured to perform both photovoltaic and signal conversion.

  Further, in the above-described embodiment, the case where the collection-side light emitting means 21 of the data collection device D is provided with one light emitting element 21a is exemplified, but the photovoltaic light emitting element (or the light emitting element for emitting photovoltaic power) (or A light emitting element array) and a signal converting light emitting element for converting an electrical signal into an optical signal may be provided. In this case, it is desirable that the light emitting element that emits light in the infrared region is a signal converting light emitting element, and the light emitting element that emits light in the visible light region is a photovoltaic light emitting element. If it does in this way, the light emitted from the light emitting element for signal conversion will not be easily disturbed by the light emitted from the light emitting element for photovoltaic power generation.

  When the amount of light emitted from the collection-side light emitting means 21 of the data collection device D is insufficient, light emitted from a separately prepared projector is irradiated to the measurement-side light receiving means 15 of the measurement apparatus M to perform optical wireless communication. You may generate electric power required for communication.

  In the above-described embodiment, the case where optical wireless communication is performed using the transmission request signal and the measurement request signal transmitted from the data collection device D as an opportunity is illustrated. However, power necessary for optical wireless communication is generated. Sometimes, it may be configured to automatically perform optical wireless communication. In this case, since the transmission request signal and the measurement request signal can be omitted, the signal conversion light emitting element of the data collection device D can be omitted.

  In the present embodiment, the case where data obtained from a plurality of sensors S, S,... Is collected in one measuring device M is illustrated, but a plurality of measuring devices M, M,. The structure T may be provided. That is, the plurality of sensors S, S,... May be divided into a plurality of groups, and the measuring device M may be provided for each group. Each measuring device M is cascade-connected to a plurality of sensors S, S,... Belonging to the corresponding group, and accumulates measurement data acquired by each sensor S.

  When a plurality of measuring devices M are provided, a wired line (coaxial cable, LAN cable, optical fiber, power line, power line, so as to enable bidirectional communication between one measuring device M and another measuring device M. The measuring devices M may be connected to each other via a dedicated line (a line using a human body or the like) N1 or a wireless line (a line using radio waves or infrared rays) N2. If it does in this way, it will become possible to transmit the measurement data accumulated in each measuring device M to other measuring devices M. That is, measurement data accumulated in a plurality of measuring devices M, M,... Can be aggregated in each measuring device M, so that the measuring devices M, M,. Even in such a case, data collection (data collection by the data collection device D) can be performed collectively in any one measurement device M. Of course, data collection may be performed using the data collection device D for each measurement device M.

  Further, one of the plurality of measuring devices M, M,... Is set as a “parent device” so that the measurement data accumulated in each of the measuring devices M, M,. Alternatively, two or more measuring devices M may be set as “parent devices”, and the measurement data may be collected in each parent device. If two or more “base units” are provided, even if a failure occurs in one base unit, other “base units” are used to collect measurement data obtained by multiple measurement devices. It becomes possible. In the measuring apparatus M other than the “master unit”, the measurement side light receiving means 15 and the measurement side light emitting means 16 may be omitted.

MS structure monitoring system S sensor M measuring device 13 display means 15 measuring side light receiving means 16 measuring side light emitting means D data collecting device 21 collecting side light emitting means 22 collecting side light receiving means

Claims (7)

A plurality of sensors attached to the structure;
A measuring device attached to the structure;
A portable data collection device, and a structure monitoring system comprising:
The measurement apparatus includes a storage unit that stores measurement data acquired by each sensor, a measurement-side light receiving unit that receives light to generate power, and a measurement side that converts the measurement data acquired by each sensor into an optical signal. A light emitting means,
The data collection device has a collection-side light receiving means for converting an optical signal transmitted from the measurement-side light emission means into an electrical signal,
The structure monitoring system, wherein the measurement device performs optical wireless communication with the data collection device using electric power generated by the measurement-side light receiving means. The structure monitoring system according to claim 1, wherein each of the sensors acquires measurement data using electric power generated by the measurement-side light receiving unit. The data collection device has a collection side light emitting means capable of emitting light directed to the measurement side light receiving means,
The structure monitoring system according to claim 2, wherein the measurement-side light receiving unit receives the light emitted from the collection-side light-emitting unit and generates electric power. The measuring device has display means for displaying the measurement data,
4. The structure monitoring system according to claim 1, wherein the display unit is made of electronic paper that does not require power when holding a display image. 5.   The structure monitoring system according to claim 1, wherein the measurement-side light receiving unit converts identification information of the measurement data together with the measurement data into an optical signal. A plurality of sensors attached to the structure;
A plurality of measuring devices attached to the structure;
A portable data collection device, and a structure monitoring system comprising:
Each of the measurement devices can transmit measurement data acquired by at least one of the sensors to the other measurement device,
At least one of the measurement devices includes a storage unit that stores measurement data acquired by each sensor, a measurement-side light receiving unit that receives light to generate power, and a measurement-side light emission unit that converts each measurement data into an optical signal And,
The data collection device has a collection-side light receiving means for converting an optical signal transmitted from the measurement-side light emission means into an electrical signal,
The structure monitoring system, wherein at least one of the measurement devices performs optical wireless communication with the data collection device using the power generated by the measurement-side light receiving means. Is attached to the structure, a measuring device you equipped with external power or internal power supply,
Measurement control means for controlling power supply to a plurality of sensors attached to the structure;
Storage means for storing measurement data acquired by each sensor;
A light receiving means on the measurement side that generates light by receiving light;
A measurement side light emitting means for converting the pre-Symbol measurement data obtained by the sensor into an optical signal,
With
A measuring apparatus for performing optical wireless communication with a data collecting apparatus using the electric power generated by the measuring side light receiving means.

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