JP2020187023A - State detection device, state detection method, and building diagnosing device - Google Patents

Abstract

To provide suppress power consumption and contribute to the realization of appropriate diagnosing of the state of a building.SOLUTION: A state detection device 1 comprises: state detection sensors 4a, 4b, 4c for detecting the state of a building and attached to the building; a power supply unit 8 for generating electric power on the basis of the vibration of the building; and a control unit 3 for controlling the state detection sensors and the power supply unit. When the voltage of generated electric power exceeds a first threshold (threshold voltage), the control unit 3 supplies electric power to the state detection sensors 4a, 4b, 4c and drives the state detection sensors 4a, 4b, 4c, and acquires state information used for diagnosing the state of the building, on the basis of signals that indicate detection results and are received from the state detection sensors 4a, 4b, 4c.SELECTED DRAWING: Figure 2

Description

The present disclosure relates to a state detection device, a state detection method, and a building diagnostic device.

Conventionally, there is known a device that receives information indicating a sensing result from a state detection sensor that senses the state of a building (for example, a bridge, a building, etc.) and diagnoses the state of the building based on the information (for example). , Patent Document 1).

In order to reduce power consumption, the device of Patent Document 1 does not constantly supply power to the state detection sensor, and powers the state detection sensor when the amount of change in the temperature of the building or the ambient temperature exceeds the threshold value. Supply. Then, the state detection sensor senses the state of the building using the supplied power supply.

JP-A-2016-57102

However, the device of Patent Document 1 is not suitable for monitoring a building to which a large external force is temporarily applied. Examples of such a building include bridges on which vehicles and the like travel (for example, road bridges, railway bridges, etc.), but the effect of the amount of temperature change on the bridges is small. Therefore, even if the result of sensing performed based on the amount of change in temperature is used, the state of the bridge (for example, the state such as damage) cannot be appropriately diagnosed.

An object of one aspect of the present disclosure is to provide a state detection device, a state detection method, and a building diagnosis device capable of suppressing power consumption and contributing to the realization of appropriate diagnosis of the state of a building. Is.

The state detection device according to one aspect of the present disclosure includes a state detection sensor that is attached to a building and detects the state of the building, a power supply unit that generates electricity based on the vibration of the building, and the state detection sensor. And a control unit that controls the power supply unit, and the control unit supplies power to the state detection sensor to drive the state detection sensor when the voltage generated by the power generation exceeds the first threshold value. Then, based on the signal indicating the detection result received from the state detection sensor, the state information used for diagnosing the state of the building is acquired.

The building diagnostic device according to one aspect of the present disclosure includes a state detection device according to one aspect of the present disclosure, a diagnostic device that diagnoses the state of a building based on state information received from the state detection device, and the like. Has.

The building diagnosis method according to one aspect of the present disclosure is a device attached to a building and having a state detection sensor that detects the state of the building and a power supply unit that generates power based on the vibration of the building. Is a state detection method performed by, when the voltage generated by the power generation exceeds the first threshold value, power is supplied to the state detection sensor to drive the state detection sensor, and the detection result received from the state detection sensor. Based on the signal indicating, the state information used for diagnosing the state of the building is acquired.

According to the present disclosure, power consumption can be suppressed, and it is possible to contribute to the realization of an appropriate diagnosis of the state of a building.

Schematic diagram showing the configuration of the building diagnostic apparatus according to the embodiment of the present disclosure. A block diagram showing the main components of the state detection device according to the embodiment of the present disclosure. A block diagram showing the main components of the diagnostic apparatus according to the embodiment of the present disclosure. A graph showing the timing at which the state detection device according to the embodiment of the present disclosure detects the state of a road bridge. A flowchart showing an example of the overall operation of the state detection device according to the embodiment of the present disclosure. A graph showing a detection signal detected by the state detection sensor according to the embodiment of the present disclosure. A flowchart showing an example of an operation in which the state detection device according to the embodiment of the present disclosure transmits state information.

Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. The components common to each figure are designated by the same reference numerals, and their description will be omitted as appropriate.

<Building diagnostic device 100>
The overall configuration of the building diagnostic apparatus 100 according to the present embodiment will be described with reference to FIG. FIG. 1 is a schematic view showing the overall configuration of the building diagnostic apparatus 100 of the present embodiment.

In the present embodiment, the case where the building whose state is diagnosed by the building diagnosis device 100 is the road bridge B will be described as an example. The state of the road bridge B refers to, for example, the degree of erosion, corrosion, and damage caused by an external force such as an earthquake.

The building to be diagnosed is not limited to the road bridge B, and may be, for example, a railway bridge on which a train travels, a tunnel through which a vehicle passes, a water storage dam, or the like.

As shown in FIG. 1, the building diagnostic device 100 includes a plurality of state detection devices 1 and a diagnostic device 2. Each state detection device 1 and the diagnostic device 2 are connected via a wireless network WN.

The state detection device 1 is attached to, for example, the pier a and the bridge girder b of the road bridge B. The pier a is a portion that supports the superstructure of the road bridge B. The bridge girder b is a plate-shaped portion bridged between the piers a.

The state detection device 1 may be attached to a portion other than the pier a and the bridge girder b. Further, in the present embodiment, the case where a plurality of state detection devices 1 are attached to the road bridge B will be described as an example, but only one state detection device 1 is attached to the road bridge B. May be good. In that case, the state detection device 1 may be attached to the pier a of the road bridge B, for example.

The diagnostic device 2 is an information processing device such as a server or a personal computer. The diagnostic device 2 is installed in, for example, a management office or a management center.

Although the details will be described later, the diagnostic device 2 receives the state information from each state detection device 1 via the wireless network WN, and diagnoses the state of the road bridge B based on the state information and predetermined parameters. ..

<State detection device 1>
The configuration of the state detection device 1 will be described with reference to FIG. FIG. 2 is a block diagram showing the main components of the state detection device 1.

As shown in FIG. 2, the state detection device 1 includes a control unit 3, a state detection sensor group 4, a timer 5, a storage unit 6, a communication unit 7, a power supply unit 8, and a voltage sensor 9. The state detection sensor group 4 includes three state detection sensors 4a, 4b, and 4c.

These components may be configured in hardware or software.

<Control unit 3>
The control unit 3 is electrically connected to the state detection sensor group 4, the timer 5, the storage unit 6, the wireless communication unit 7, the power supply unit 8, and the voltage sensor 9, and controls their operations.

Although not shown, the control unit 3 has a power supply circuit and a processing circuit. The power supply circuit is a circuit that supplies power to the state detection sensors 4a, 4b, and 4c. Further, the processing circuit is a circuit that acquires state information (details will be described later) by processing the detection signals received from the state detection sensors 4a, 4b, and 4c.

In addition, the control unit 3 performs various determination processes. Details of various determination processes will be described later.

Generally, the electronic device has a sleep mode in which the power is saved while the power is kept on. The state detection device 1 of the present embodiment also includes a sleep mode. The control unit 3 controls the state detection device 1 to be in the sleep mode. In the sleep mode, power is not supplied to, for example, the state detection sensor group 4, the storage unit 6, and the wireless communication unit 7 by the control of the control unit 3. The state detection device 1 is usually in a sleep mode.

<State detection sensors 4a, 4b, 4c>
The state detection sensors 4a, 4b, and 4c are attached to, for example, a housing (not shown) of the state detection device 1.

The state detection sensors 4a, 4b, and 4c may be directly attached to the road bridge B (for example, the pier a, the bridge girder b, or a portion other than them). However, since the control unit 3 cannot read the detection signals from the state detection sensors 4a, 4b, and 4c when they are weak, the state detection sensors 4a, 4b, and 4c detect the state so that the detection signals are not attenuated as much as possible. It is preferably mounted near the device 1.

As the state detection sensors 4a, 4b, and 4c, for example, an acceleration sensor, a displacement sensor, or an inclination sensor can be used.

The acceleration sensor detects the acceleration of vibration at the mounting position. The displacement sensor detects the amount of displacement of the road bridge B at its mounting position (for example, the distance between the piers a and the distance between the bridge girder b and the piers a). The inclination sensor detects the inclination angle of the road bridge B at the mounting position.

The state detection sensors 4a, 4b, and 4c may all be the same type of sensor, or may be different types of sensors.

The state of buildings such as road bridge B changes depending on the season and weather. Therefore, one of the state detection sensors 4a, 4b, and 4c may be a sensor other than the above-mentioned three types of sensors (for example, a temperature / humidity sensor). For example, by using the temperature / humidity sensor and the acceleration sensor in combination, more accurate state detection can be realized.

The state detection sensors 4a, 4b, and 4c each transmit a detection signal indicating a detection result to the control unit 3.

<Timer 5>
The timer 5 measures the current date and time.

<Memory unit 6>
The storage unit 6 stores various setting parameters used during the operation of the state detection device 1.

Examples of the setting parameters include the timing of storing state information, the timing of transmitting state information, the threshold voltage, the number of times state detection is executed, and the like, which will be described later.

Further, the storage unit 6 temporarily stores the state information acquired by the control unit 3 based on the detection signals from the state detection sensors 4a, 4b, and 4c.

<Wireless communication unit 7>
The wireless communication unit 7 controls wireless communication between the state detection device 1 and the diagnostic device 2.

<Power supply unit 8>
The power supply unit 8 has a vibration power generation device 8a and a secondary battery device 8b. The vibration power generation device 8a and the secondary battery device 8b are drive power sources for the state detection device 1.

The power supply unit 8 supplies the electric power required for the operation of each part of the state detection device 1 from the secondary battery device 8b to each part of the state detection device 1 via the control unit 3. As a result, the state detection sensors 4a, 4b, 4c, the timer 5, the storage unit 6, the wireless communication unit 7, and the voltage sensor 9 operate.

<Vibration power generation device 8a>
The vibration power generation device 8a generates power by the vibration of the road bridge B (for example, the vibration generated when the vehicle travels on the road bridge B). The electric power generated by the vibration is supplied to the secondary battery device 8b. As a result, the secondary battery device 8b can be charged in response to the generation of vibration. Therefore, the life of the secondary battery device 8b and the state detection device 1 can be extended.

The electric power generated by the vibration and output from the vibration power generation device 8a is alternating current. In order to store the electric power in the secondary battery device 8b, it is necessary to convert it from alternating current to direct current. Therefore, although not shown, a conversion circuit for converting alternating current into direct current is provided between the vibration power generation device 8a and the secondary battery device 8b.

Further, the vibration power generation device 8a uses a magnetostrictive vibration power generation. Since the magnetostrictive vibration power generation has a relatively low voltage and low resistance, there is little loss when charging the secondary battery device 8b, and the power generation amount is excellent.

<Voltage sensor 9>
The voltage sensor 9 is connected to the vibration power generation device 8a. The voltage sensor 9 detects the voltage of the electric power generated by the vibration power generation device 8a (hereinafter, also referred to as a generated voltage).

The factor most influencing the damage of the road bridge B is, for example, the external force applied when the vehicle enters the road bridge B and when the vehicle passes through the road bridge B. When a large amount of this external force is applied to the road bridge B, the road bridge B vibrates further, and the amount of power generated by the vibration power generation device 8a increases.

The change in voltage detected by the voltage sensor 9 is correlated with the change over time in the amount of power generated by the vibration power generation device 8a. That is, as the amount of power generated by the vibration power generation device 8a increases, the voltage detected by the voltage sensor 9 also increases.

<Diagnostic device 2>
The configuration of the diagnostic apparatus 2 will be described with reference to FIG. FIG. 3 is a block diagram showing the main components of the diagnostic apparatus 2.

The diagnostic device 2 includes a control unit 10, an operation unit 11, a display unit 12, a storage unit 13, and a wireless communication unit 14.

The diagnostic device 2 is connected to, for example, a commercial power source. Further, as described above, the diagnostic device 2 is an information processing device such as a general personal computer or a server.

<Control unit 10>
The control unit 10 controls the operation of each unit of the diagnostic device 2. Further, the control unit 10 diagnoses the state of the road bridge B based on the state information received from the state detection device 1 and the predetermined parameters.

When the state information is acquired based on the detection signal of the acceleration sensor (acceleration detection signal), the diagnostic device 2 determines the state of the road bridge B based on the parameters corresponding to the state information of the acceleration sensor. Diagnose.

When the state information is acquired based on the detection signal of the displacement sensor (displacement amount detection signal), the diagnostic device 2 determines the state of the road bridge B based on the parameters corresponding to the state information of the displacement sensor. To diagnose.

When the state information is acquired based on the detection signal of the inclination sensor (detection signal of the inclination angle), the diagnostic device 2 determines the state of the road bridge B based on the parameters corresponding to the state information of the inclination sensor. To diagnose.

<Operation unit 11>
The operation unit 11 receives various input operations performed by the user of the diagnostic device 2. The operation unit 11 is, for example, an input device such as a keyboard and a mouse.

<Display unit 12>
The display unit 12 displays various information on the screen. Specifically, the display unit 12 displays a screen according to the input operation received by the operation unit 11, or responds to the result of processing executed by the control unit 10 (for example, the result of comparison processing with various parameters). Display the screen. The display unit 12 is, for example, a display device such as a display.

<Memory unit 13>
The storage unit 13 stores the parameters used during the operation of the diagnostic device 2 and the state information received from the state detection device 1.

<Wireless communication unit 14>
The wireless communication unit 14 controls wireless communication with each state detection device 1 attached to the road bridge B. For example, the wireless communication unit 14 receives the state information transmitted from the state detection device 1 via the wireless network NW.

<Timing of detection of the state of the road bridge B by the state detection device 1>
The timing at which the state detection device 1 detects the state of the road bridge B will be described.

The control unit 3 transmits an execution instruction (hereinafter, referred to as a detection instruction) for detecting the state of the road bridge B to the state detection sensors 4a, 4b, and 4c. Upon receiving the detection instruction, the state detection sensors 4a, 4b, and 4c detect the state of the road bridge B and transmit the detection signal to the control unit 3. The control unit 3 acquires the state information based on the detection signal, and stores the state information in the storage unit 6.

The frequency of detection instructions transmitted from the control unit 3 to the state detection sensors 4a, 4b, and 4c (hereinafter, simply referred to as "frequency of detection instructions") is determined by setting the threshold voltage, the number of detections, and the time described later. In order to reduce the power consumption of the state detection device 1, it is preferable to reduce the frequency of detection instructions as much as possible. Therefore, the frequency of detection instructions per day is preferably set to, for example, 4 times or less or 3 times or less.

On the other hand, if the control unit 3 does not receive the detection signal for a long period of time, the state information cannot be acquired. As a result, it is not preferable that the period during which the diagnostic device 2 cannot diagnose the road condition becomes long. Therefore, in order to properly diagnose the state of the road bridge B, the frequency of detection instructions is preferably set to, for example, once every two days or once every three days or more.

Here, a specific example of the timing at which the state detection device 1 detects the state of the road bridge B will be described with reference to FIG. FIG. 4 is a graph showing the timing at which the state detection device 1 detects the state of the road bridge B. The vertical axis of FIG. 4 shows the voltage detected by the voltage sensor 9 (that is, the generated voltage of the vibration power generation device 8a). The horizontal axis of FIG. 4 indicates the time of day.

Here, the case where the state detection sensors 4a, 4b, and 4c detect the state of the road bridge B three times a day will be described. In the present embodiment, as shown in FIG. 4, one day (24 hours) is divided into sections 1 to 3 which are three time zones. Section 1 is from 0:00 to 8:00, Section 2 is from 8:00 to 16:00, and Section 3 is from 16:00 to 24:00. Then, the state detection sensors 4a, 4b, and 4c are driven once in each of sections 1 to 3 to detect the state of the road bridge B.

<Threshold voltage>
The threshold voltage used by the control unit 3 will be described. The threshold voltage corresponds to an example of the first threshold.

The threshold voltage is a parameter used by the control unit 3 to determine whether or not it is the timing to drive the state detection sensors 4a, 4b, and 4c. The threshold voltage is stored in the storage unit 6. The threshold voltage is, for example, 1V.

The control unit 3 compares the generated voltage detected by the voltage sensor 9 with the threshold voltage, and if the generated voltage is larger than the threshold voltage, determines that it is the timing to drive the state detection sensors 4a, 4b, and 4c. In this case, the control unit 3 transmits the detection instruction to the state detection sensors 4a, 4b, and 4c.

<Transmission timing of status information>
The timing at which the state detection device 1 transmits the state information to the diagnostic device 2 will be described.

As shown in FIG. 1, a plurality of state detection devices 1 are attached to the road bridge B. Therefore, if a plurality of state detection devices 1 use the same channel and simultaneously transmit state information to the diagnostic device 2, each state information may collide and a communication error may occur.

Therefore, in the present embodiment, the transmission timing of the state information of each state detection device 1 is set to be different. As a result, it is possible to prevent a plurality of state detection devices 1 from transmitting state information at the same time.

<Overall operation of state detection device 1>
The overall operation of the state detection device 1 will be described with reference to FIG. FIG. 5 is a flowchart showing an example of the overall operation of the state detection device 1. The flow of FIG. 5 is started when the state detection device 1 is in the sleep mode.

First, the control unit 3 determines whether or not the generated voltage of the vibration power generation device 8a detected by the voltage sensor 9 exceeds the threshold voltage (step S11).

If the generated voltage does not exceed the threshold voltage (step S11: NO), the flow returns to step S11.

On the other hand, when the generated voltage exceeds the threshold voltage (step S11: YES), the flow proceeds to step S12.

Next, the control unit 3 determines whether or not the state detection sensors 4a, 4b, and 4c have executed the state detection a predetermined number of times in the current time section (step S12).

For example, assume that the current time measured by the timer 5 is 4 o'clock and the section of the current time is section 1 shown in FIG. Further, in section 1, it is assumed that the specified number of times of state detection is set to one. In this case, if the control unit 3 receives the detection signal once from the state detection sensors 4a, 4b, and 4c between 0:00 and 4:00, it determines that the state detection has been executed a predetermined number of times. On the other hand, if the control unit 3 has not received the detection signal from the state detection sensors 4a, 4b, and 4c even once between 0:00 and 4:00, the control unit 3 determines that the state detection has not been executed a predetermined number of times. ..

If the specified number of state detections have been executed in the current time section (step S12: YES), the flow ends.

On the other hand, if the state detection of the specified number of times has not been executed in the current time section (step S12: NO), the flow proceeds to step S13.

Next, the control unit 3 drives the state detection sensors 4a, 4b, and 4c (step S13).

Specifically, the control unit 3 controls the power supply unit 8 so that power is supplied from the secondary battery device 8b to the state detection sensors 4a, 4b, and 4c, and issues a detection instruction to the state detection sensors 4a, 4b, and 4c. Send to. As a result, the state detection sensors 4a, 4b, and 4c detect the state of the road bridge B and transmit the detection signal to the control unit 3. The control unit 3 processes the detection signal to acquire the state information, and stores the state information in the storage unit 6.

Next, the control unit 3 determines whether or not the transmission timing of the state information has arrived (step S14).

Specifically, the control unit 3 determines whether or not a predetermined transmission timing of the state information has arrived based on the current time measured by the timer 5. As described above, the transmission timing of the state information is set to be different for each state detection device 1.

If the transmission timing of the state information has not arrived (step S14: NO), the flow returns to step S14.

When the transmission timing of the state information has arrived (step S14: YES), the flow proceeds to step S15.

Next, the control unit 3 controls the power supply unit 8 so that power is supplied from the secondary battery device 8b to the storage unit 6 and the wireless communication unit 7. Then, the control unit 3 reads the state information from the storage unit 6, transmits the state information to the wireless communication unit 7, and instructs the wireless communication unit 7 to transmit the state information. As a result, the wireless communication unit 7 transmits the state information received from the control unit 3 to the diagnostic device 2 (step S15).

As described above, an acceleration sensor or a displacement sensor can be used to detect the state of the road bridge B, but if the road bridge B is not vibrating, the detection signal is not output and the state information is not acquired. As a result, the condition of the road bridge B cannot be diagnosed. That is, when the road bridge B is vibrating, the state detection sensors 4a, 4b, and 4c are driven to acquire the state information from the detection signal, while when the road bridge B is not vibrating, the state detection device. It is effective in terms of power consumption to set 1 to the sleep mode.

Here, the operation of the state detection device 1 described above will be supplemented with reference to FIG.

In FIG. 4, the state detection execution timings t1, t2, and t3 (see the black circles in FIG. 4) are timings when the voltage detected by the voltage sensor 9 exceeds the threshold voltage. The control unit 3 supplies electric power to the state detection sensors 4a, 4b, and 4c for a predetermined time (hereinafter referred to as a predetermined time) from the state detection execution timings t1, t2, and t3, and drives them. The specified time is the time for executing one state detection, for example, 60 seconds.

For example, in section 1, the state detection sensors 4a, 4b, and 4c detect the state of the road bridge B from the state detection timing t1 to the specified time. When the control unit 3 receives the detection signal from the detection sensors 4a, 4b, and 4c, the control unit 3 stores the executed number of state detections "1" and determines that the specified number of times "1" in section 1 is satisfied. Then, after the lapse of the specified time, the control unit 3 puts the state detection device 1 into the sleep mode. After that, even if the voltage detected by the voltage sensor 9 exceeds the threshold voltage between sections 1, the control unit 3 does not drive the state detection sensors 4a, 4b, and 4c.

After that, when the current time measured by the timer 5 reaches the reset time r1 (for example, 8 o'clock), the number of times the state detection has been executed in section 1 "1" is reset.

The above operation is the same in sections 2 and 3 shown in FIG.

<Example of detection signal>
An example of the detection signal detected by the state detection sensors 4a, 4b, and 4c will be described with reference to FIG. Here, as an example, a case where the state detection sensors 4a, 4b, and 4c are acceleration sensors will be described as an example.

FIG. 6 is a graph showing detection signals detected by the state detection sensors 4a, 4b, and 4c for a specified time after the voltage detected by the voltage sensor 9 exceeds the threshold voltage. In FIG. 6, the horizontal axis represents time and the vertical axis represents acceleration. Here, a case where the specified time is set to 60 seconds will be described as an example.

As shown in FIG. 6, during the specified time of 60 seconds, the time zone T1 (hereinafter referred to as the first time zone) in which the acceleration is largely detected and the time zone T2 (hereinafter referred to as the second time zone) in which the acceleration is hardly detected are detected. There is a time zone).

For example, the first time zone T1 is a time zone in which the voltage detected by the voltage sensor 9 is larger than a predetermined threshold value, and the second time zone T2 is a time zone in which the voltage detected by the voltage sensor 9 is equal to or less than a predetermined threshold value. It's a certain time zone. The predetermined threshold value is, for example, a value larger than the above-mentioned threshold voltage (first threshold value). Further, the predetermined threshold value corresponds to an example of the second threshold value.

When the road bridge B is diagnosed based on the state information acquired from the acceleration detection signal, the state information acquired from the detection signal in the second time zone T2 is not always necessary. However, since the state information has a predetermined amount of data, it takes a certain amount of communication time when being transmitted from the state detection device 1 to the diagnostic device 2, and the power consumption becomes large.

Therefore, the control unit 3 may not acquire the state information from the detection signal of the second time zone T2, but may acquire the state information only from the detection signal of the first time zone T1. As a result, only the state information acquired from the detection signal in the first time zone T1 is transmitted to the diagnostic device 2, so that the amount of data to be communicated can be reduced. As a result, the power consumption of the state detection device 1 can be reduced.

Alternatively, the control unit 3 may put the state detection sensors 4a, 4b, and 4c in a sleep state (a state in which the power supply amount is reduced) during the second time zone T2. As a result, the power consumption required for the operation of the state detection sensors 4a, 4b, and 4c can be reduced.

The control unit 3 determines whether or not to put the state detection sensors 4a, 4b, and 4c into the sleep state based on the voltage detected by the voltage sensor 9. For example, while the state detection sensors 4a, 4b, and 4c are being driven, the control unit 3 supplies power to the state detection sensors 4a, 4b, and 4c when the voltage detected by the voltage sensor 9 becomes equal to or less than a predetermined threshold value. The amount may be reduced and the state detection sensors 4a, 4b, and 4c may be put into a sleep state.

It is difficult to predict when a vehicle will travel on the overpass B and what type of vehicle will travel on the overpass B. Therefore, this embodiment is effective when the state is detected by wireless communication while reducing the power consumption.

The parameters such as the threshold voltage, section, and specified number of times described above may be set from the diagnostic device 2 to the state detection device 1 via, for example, the wireless communication unit 7. At that time, the control unit 3 of the state detection device 1 may control the power supply unit 8 so as to supply electric power to the wireless communication unit 7. As a result, various parameters can be easily changed by using the diagnostic device 2.

<Transmission of status information>
A specific example of the operation of the state detection device 1 transmitting the state information (step S15 in FIG. 5) will be described with reference to FIG. 7. FIG. 7 is a flowchart showing an example of an operation in which the state detection device 1 transmits state information.

First, the control unit 3 determines whether or not the state information is stored in the storage unit 6 (step S21).

If the state information is not stored in the storage unit 6 (step S21: NO), the flow ends.

On the other hand, when the state information is stored in the storage unit 6 (step S21: YES), the flow proceeds to step S22.

Next, the control unit 3 supplies power from the secondary battery device 8b to the wireless communication unit 7 (step S22). At this time, the control unit 3 supplies electric power from the secondary battery device 8b to the storage unit 6.

Next, the control unit 3 reads the state information from the storage unit 6, transmits the state information to the wireless communication unit 7, and instructs the wireless communication unit 7 to transmit the state information to the diagnostic device 2. As a result, the wireless communication unit 7 transmits the status information to the diagnostic device 2 via the wireless network NW (step S23).

Next, the control unit 3 determines whether or not the transmission of the state information is completed (step S24).

If the transmission of the status information is not completed (step S24: NO), the flow returns to step S24.

On the other hand, when the transmission of the state information is completed (step S24: YES), the flow proceeds to step S25.

Next, the control unit 3 determines whether or not there is a communication error in transmitting the state information (step S25).

If there is no communication error in the transmission of the status information (step S25: NO), that is, if the status information is normally transmitted to the diagnostic device 2, the flow proceeds to step S26.

Next, the control unit 3 stops the power supply to the wireless communication unit 7 (step S26).

Next, the control unit 3 erases the state information stored in the storage unit 6 transmitted to the diagnostic device 2 from the storage unit 6 (step S27).

On the other hand, if there is a communication error in transmitting the state information (step S25: YES), the flow proceeds to step S28.

Since the control unit 3 tries to transmit again, it determines whether or not the next transmission timing has arrived (step S28). This determination process is the same as step S14 of FIG. 5 described above.

If the transmission timing of the state information has not arrived (step S28: NO), the flow returns to step S28.

On the other hand, when the transmission timing of the state information has arrived (step S28: YES), the flow returns to step S23.

<Effect>
The state of a building such as a road bridge B does not change suddenly unless a large external force (for example, an external force due to an earthquake) is applied. Therefore, the state detection sensors 4a, 4b, and 4c do not need to constantly detect the state of the road bridge B. Therefore, the state detection device 1 of the present embodiment supplies power to the state detection sensors 4a, 4b, and 4c when the generated voltage of the vibration power generation device 8a exceeds the threshold voltage, and detects the state of the road bridge B. I do. Therefore, the state detection device 1 can suppress the power consumption.

Further, in the present embodiment, when the power generation voltage of the vibration power generation device 8a exceeds the threshold voltage, there are many vehicles traveling on the road bridge B. In that case, the state detection sensors 4a, 4b, and 4c can appropriately detect the state of the road bridge B. Therefore, the state detection device 1 can obtain a suitable detection signal by driving the state detection sensors 4a, 4b, and 4c when the generated voltage of the vibration power generation device 8a exceeds the threshold voltage, and can be used as the detection signal. Suitable state information can be obtained based on the above. Therefore, the state detection device 1 can contribute to the realization of an appropriate diagnosis of the state of the road bridge B.

Further, since the state detection device 1 supplies power to the storage unit 6 and the wireless communication unit 7 only when the state information is transmitted to the diagnostic device 2, the power consumption can be further suppressed.

From the above, according to the state detection device 1 and the building diagnosis device 100 of the present embodiment, it is possible to suppress power consumption and contribute to the realization of an appropriate diagnosis of the state of the building.

The present disclosure is not limited to the description of the above embodiment, and various modifications can be made without departing from the spirit of the present embodiment.

The state detection device, the state detection method, and the building diagnosis device of the present disclosure are useful in the technique for diagnosing the state of a building.

1 State detection device 2 Diagnostic device 3 Control unit 4 State detection sensor group 4a, 4b, 4c State detection sensor 5 Timer 6 Storage unit 7 Wireless communication unit 8 Power supply unit 8a Vibration power generation device 8b Secondary battery device 9 Voltage sensor 10 Control unit 11 Operation unit 12 Display unit 13 Storage unit 14 Wireless communication unit 100 Building diagnostic device

Claims (9)

A state detection sensor that is attached to a building and detects the state of the building,
A power supply unit that generates electricity based on the vibration of the building
It has the state detection sensor and the control unit that controls the power supply unit.
The control unit
When the voltage generated by the power generation exceeds the first threshold value, power is supplied to the state detection sensor to drive the state detection sensor.
Based on the signal indicating the detection result received from the state detection sensor, the state information used for diagnosing the state of the building is acquired.
State detector. It further has a wireless communication unit that performs wireless communication with a diagnostic device that diagnoses the state of the building based on the state information.
The control unit
Power is supplied to the wireless communication unit at a predetermined timing to transmit the state information to the diagnostic device.
The state detection device according to claim 1. The control unit
Power is supplied to the state detection sensor for a specified time from the timing when the voltage generated by the power generation exceeds the threshold voltage to drive the state detection sensor.
After the lapse of the specified time, the power supply to the state detection sensor is stopped.
The state detection device according to claim 1 or 2. The control unit
When the voltage generated by the power generation falls below the second threshold value during the specified time, the amount of power supplied to the state detection sensor is reduced.
The state detection device according to claim 3. The control unit
During the specified time, the state information is not acquired from the signal detected by the state detection sensor when the voltage generated by the power generation is equal to or less than the second threshold value.
The state detection device according to claim 3. The control unit
If there is no communication error in the transmission of the state information, the power supply to the wireless communication unit is stopped, and the state information held in the state detection device is erased.
When there is a communication error in the transmission of the state information, the wireless communication unit is made to execute the transmission of the state information at the timing next to the predetermined timing.
The state detection device according to any one of claims 2 to 5. Further having a voltage sensor for detecting the voltage generated by the power generation
The control unit
It is determined whether or not the voltage detected by the voltage sensor exceeds the threshold voltage.
The state detection device according to any one of claims 1 to 6. The state detection device according to any one of claims 1 to 7.
It has a diagnostic device that diagnoses the state of a building based on the state information received from the state detection device.
Building diagnostic equipment. It is a state detection method performed by a device having a state detection sensor attached to a building and detecting the state of the building and a power supply unit that generates power based on the vibration of the building.
When the voltage generated by the power generation exceeds the first threshold value, power is supplied to the state detection sensor to drive the state detection sensor.
Based on the signal indicating the detection result received from the state detection sensor, the state information used for diagnosing the state of the building is acquired.
State detection method.

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