JP2009192373A - Integrity determination system of structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an integrity determination system of a structure capable of switching automatically a regular state to an emergency state. <P>SOLUTION: This system is equipped with a displacement sensor for detecting displacement of the structure, a regular measuring means for measuring displacement of a structure belt at a regular time based on an output signal from the displacement sensor, an emergency measuring means for measuring displacement of the structure belt at an emergency time based on the output signal from the displacement sensor, and an output switching means for outputting the output signal from the displacement sensor to either of the regular measuring means and the emergency measuring means corresponding to a feeding state from the emergency measuring means. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a structure soundness judgment system.

  For the purpose of judging the soundness of structures after a major earthquake, as shown in Fig. 2 (a), it is common to acquire earthquake records by attaching sensors to the structure and performing measurements under constant monitoring conditions. Has been done. In particular, in the method by measuring the unfolding deformation (displacement between floors) of the structure, it is possible to directly determine damage or the like from the maximum recorded numerical value.

However, since a device used for regular measurement requires a commercial power supply, it is difficult to continue measurement when a power failure occurs due to an earthquake or the like. Moreover, there is a limit to the extension time that can be measured even when an uninterruptible power supply is connected. For this reason, a sensor system capable of recording and holding a maximum displacement value and the like with no power source has been developed and used (for example, see Patent Document 1). This sensor system can know the post-conditions as retained recorded values and cannot record them as data that can be post-processed like data obtained by regular measurement. This is an emergency measurement system that can be used for the purpose of measurement that is easy to handle even without it (FIG. 2B).
Japanese Patent Laid-Open No. 2005-207867

  As shown in FIG. 3, the above-mentioned two systems are systems in which the former can acquire data that can be highly judged and analyzed by an expert at all times (FIG. 3 (a)), and the latter is not an expert. Is a system that can be determined in an emergency (FIG. 3B). The difference between the two systems mentioned above is that the sensors used are shared and the measuring instruments are used separately for normal and emergency situations. Sometimes an operator switches to an emergency measuring instrument. For these two systems, it is necessary to make use of advanced systems that compensate for the advantages and disadvantages and improve the functions and convenience.

  However, assuming such a scene (for example, a scene where a manual changeover switch is used or a connection line of a measuring instrument is replaced), the measurement function to be performed at all times is forgotten to switch in the measurement after the earthquake. May be damaged. In other words, it is necessary to devise a function as a system that does not cause human error.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a soundness determination system for a structure that can automatically switch between normal and emergency.

  The present invention is based on a displacement sensor that detects a displacement amount of a structure, a constant measurement unit that always measures the displacement amount of the structural band based on an output signal of the displacement sensor, and an output signal of the displacement sensor. The emergency measurement means for measuring the displacement amount of the structural band in an emergency, and the output signal of the displacement sensor according to the power supply state from the emergency measurement means, the constant measurement means or the emergency measurement means Output switching means for outputting to any of the above.

  According to the present invention, when power is supplied from the emergency measurement means, the output switching means outputs an output signal of the displacement sensor to the emergency measurement means, and power is supplied from the emergency measurement means. If not, the output signal of the displacement sensor is output to the constant measuring means.

  According to the present invention, the power supply from the measuring instrument at the time of emergency is used for switching the switch, so that even when the supply of commercial power is stopped, the automatic switching is performed when the measurement should be performed. In this case, since it is possible to automatically return to the normal measurement operation, it is possible to prevent forgetting to switch.

  Hereinafter, a soundness determination system for a structure according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing the configuration of the embodiment. In this figure, reference numeral 1 denotes a displacement sensor (displacement memory type sensor) that is attached to a structure and can detect the amount of displacement in the structure. Reference numeral 2 denotes an output switching unit that automatically switches the output destination of the output signal of the displacement sensor 1. Reference numeral 3 denotes a constant measurement unit that measures the amount of displacement in a non-emergency state (a state where commercial power is supplied). Reference numeral 4 denotes an emergency measurement unit that measures the amount of displacement in an emergency (a state where commercial power is not supplied). When power is supplied (power feeding) from the emergency measurement unit 4, the output switching unit 2 switches the switch so that the output signal of the displacement sensor 1 is output to the emergency measurement unit 4 (B side). When the power supply (power feeding) from the hour measuring unit 4 is stopped, the switch is switched so that the output signal of the displacement sensor 1 is always output to the measuring unit 3 (A side).

  Reference numeral 31 denotes a commercial power supply unit that supplies commercial power. Reference numeral 32 denotes a measuring instrument that inputs an output signal of the displacement sensor 1 via the output switching unit 2 and measures a displacement amount for determining the soundness of the structure based on the output signal. Reference numeral 33 denotes a waveform recording unit that records a displacement amount waveform output from the measuring instrument 32, and is configured by, for example, a hard disk device.

  Reference numeral 41 denotes a measurement transmitter that inputs an output signal of the displacement sensor 1 via the output switching unit 2 and transmits the input signal using wireless communication. Reference numeral 42 denotes a secondary battery power supply unit that includes a secondary battery and supplies electric power of the secondary battery. Reference numeral 43 denotes a measurement receiver that operates using the power supplied from the secondary battery power supply unit 42 as a power supply. The measurement receiver 43 supplies power to the measurement transmitter, and the displacement sensor transmitted by the measurement transmitter 41 through this power supply. 1 is a measurement receiver that receives an output signal of 1. Reference numeral 44 denotes an information recording unit for recording the maximum value and the minimum value up to the present time, and the current value based on the output signal of the displacement sensor 1.

  Next, the operation of the structure soundness judgment system shown in FIG. 1 will be described with reference to FIG. First, the secondary battery power supply unit 42 determines whether or not the commercial power supply has a power failure, and does not supply power to the measurement receiver 43 if there is no power failure. As a result, power is not supplied from the emergency measurement unit 4 to the output switching unit 2. When power is supplied from the emergency measurement unit 4, the switch in the output switching unit 2 is switched so that the output signal of the displacement sensor 1 is output to the emergency measurement unit 4. Is stopped so that the output signal of the displacement sensor 1 is constantly output to the measurement unit 3, the output signal of the displacement sensor 1 is output to the constant measurement unit 3. The measuring device 32 reads the output signal and records it in the waveform recording unit 33 to measure the displacement amount at all times.

  On the other hand, when the secondary battery power supply unit 42 detects that the commercial power supply has failed due to an earthquake or the like, the secondary battery power supply unit 42 supplies power to the measurement receiver 43 by supplying the power of the secondary battery to the measurement receiver 43. I do. In response to this, the measurement receiver 43 supplies power to the measurement transmitter 41 using the power supplied from the secondary battery power supply unit 42. When power is supplied to the measurement transmitter 41, power is also supplied to the output switching unit 2. When power is supplied to the output switching unit 2, the switch in the output switching unit 2 switches so that the output signal of the displacement sensor 1 is output to the emergency measurement unit 4 (switch from the A side to the B side). ). Thereby, the output signal of the displacement sensor 1 is output to the emergency measurement unit 4. The measurement transmitter 41 reads the output signal of the displacement sensor 1 and transmits the read output signal to the measurement receiver 43. In response to this, the measurement receiver 43 updates the maximum value or the minimum value and updates the current value based on the received output signal value, and records them in the information recording unit 44. This operation continues while power is supplied from the secondary battery power supply unit 42.

  When detecting that the power failure of the commercial power supply has been restored, the secondary battery power supply unit 42 stops the power supply operation to the measurement receiver 43 and charges the secondary battery using the power of the commercial power supply. When power supply from the secondary battery power supply unit 42 to the measurement receiver 43 is stopped, power supply to the output switching unit 2 via the measurement transmitter 41 is also stopped. When the power supply to the output switching unit 2 stops, the switch in the output switching unit 2 switches so that the output signal of the displacement sensor 1 is always output to the measurement unit 3 (switch from the B side to the A side). Thereby, the output signal of the displacement sensor 1 is always output to the measurement unit 3. The measuring device 32 reads the output signal and records it in the waveform recording unit 33 so that the displacement amount is always measured.

  In this way, by using the power supply from the measuring instrument at the time of emergency for switching the switch, even if the supply of commercial power is stopped, automatic switching is performed when measurement should be performed. Since it is possible to automatically return to the normal measurement operation, forgetting to switch can be prevented. In particular, for the purpose of judging the soundness of the structure, the present invention shares a displacement memory type sensor that holds a maximum displacement value, etc. An output switching unit 2 that has a measurement function in case of an emergency when the power supply is interrupted, and can automatically switch the output destination of the displacement sensor 1 in order to effectively use both functions. It becomes possible to prevent occurrence of forgetting to switch.

  The output switching unit 2 shown in FIG. 1 is effective when connecting a sensor (which also has a normal displacement output) that can hold the maximum value, minimum value, accumulated value, etc., which is a feature of the displacement memory type sensor. It is a simple method.

  In the conventional measurement method, since the measurement method using the displacement memory type sensor is properly used at all times or in an emergency, there is a limitation in data acquisition due to a difference in measurement method such as detailed measurement or simple measurement. However, according to the present invention, it is possible to automatically switch the output of the displacement sensor, so that it can be constructed as a soundness determination system having both functions in measurement operation. The lifting surface using the soundness judgment system according to the present invention is used for the purpose of judging the soundness of a building due to the occurrence of a large earthquake, and can be automatically switched at all times in an emergency. Thus, the system is duplicated and the reliability can be improved.

  Note that a program for realizing the functions of the constant measurement unit 3 and the emergency measurement unit 4 in FIG. 1 is recorded on a computer-readable recording medium, and the program recorded on the recording medium is read into a computer system, You may perform displacement amount measurement processing by performing. Here, the “computer system” includes an OS and hardware such as peripheral devices. The “computer-readable recording medium” refers to a storage device such as a flexible medium, a magneto-optical disk, a portable medium such as a ROM and a CD-ROM, and a hard disk incorporated in a computer system. Further, the “computer-readable recording medium” refers to a volatile memory (RAM) in a computer system that becomes a server or a client when a program is transmitted via a network such as the Internet or a communication line such as a telephone line. In addition, those holding programs for a certain period of time are also included.

  The program may be transmitted from a computer system storing the program in a storage device or the like to another computer system via a transmission medium or by a transmission wave in the transmission medium. Here, the “transmission medium” for transmitting the program refers to a medium having a function of transmitting information, such as a network (communication network) such as the Internet or a communication line (communication line) such as a telephone line. The program may be for realizing a part of the functions described above. Furthermore, what can implement | achieve the function mentioned above in combination with the program already recorded on the computer system, what is called a difference file (difference program) may be sufficient.

It is a block diagram which shows the structure of one Embodiment of this invention. It is explanatory drawing which shows the outline | summary of the measuring system which judges the soundness of a structure. It is explanatory drawing which shows the structure of the conventional measurement system.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Displacement sensor, 2 ... Output switching part, 3 ... Constant measurement part, 31 ... Commercial power supply part, 32 ... Measuring machine, 33 ... Waveform recording part, 4 ...・ Emergency measurement unit, 41 ... measurement transmitter, 42 ... secondary battery power supply unit, 43 ... measurement receiver, 44 ... information recording unit

Claims (2)

A displacement sensor for detecting the displacement of the structure;
Constantly measuring means for measuring the displacement amount of the structural band at all times based on the output signal of the displacement sensor;
Emergency measurement means for measuring the amount of displacement of the structural band in an emergency based on an output signal of the displacement sensor;
Output switching means for outputting an output signal of the displacement sensor to either the constant measurement means or the emergency measurement means in accordance with the power supply state from the emergency measurement means. Soundness judgment system. The output switching unit outputs an output signal of the displacement sensor to the emergency measurement unit when power is supplied from the emergency measurement unit,
2. The structure soundness judgment system according to claim 1, wherein when no power is supplied from the emergency measurement means, an output signal of the displacement sensor is output to the constant measurement means.

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