WO2018164102A1 - 診断コスト出力装置、診断コスト出力方法及びコンピュータ読み取り可能記録媒体 - Google Patents
診断コスト出力装置、診断コスト出力方法及びコンピュータ読み取り可能記録媒体 Download PDFInfo
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- WO2018164102A1 WO2018164102A1 PCT/JP2018/008517 JP2018008517W WO2018164102A1 WO 2018164102 A1 WO2018164102 A1 WO 2018164102A1 JP 2018008517 W JP2018008517 W JP 2018008517W WO 2018164102 A1 WO2018164102 A1 WO 2018164102A1
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- cost
- diagnostic
- measuring instrument
- pipe
- detection
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q30/00—Commerce
- G06Q30/02—Marketing; Price estimation or determination; Fundraising
- G06Q30/0283—Price estimation or determination
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/24—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using infrasonic, sonic, or ultrasonic vibrations
- G01M3/243—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using infrasonic, sonic, or ultrasonic vibrations for pipes
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q10/00—Administration; Management
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q30/00—Commerce
- G06Q30/02—Marketing; Price estimation or determination; Fundraising
- G06Q30/0201—Market modelling; Market analysis; Collecting market data
- G06Q30/0206—Price or cost determination based on market factors
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B7/00—Water main or service pipe systems
- E03B7/003—Arrangement for testing of watertightness of water supply conduits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
- F17D5/06—Preventing, monitoring, or locating loss using electric or acoustic means
Definitions
- the present invention relates to a diagnostic cost output device, a diagnostic cost output method, and a computer-readable recording medium.
- ⁇ Pipe deterioration diagnosis may require a large amount of money and time.
- cost estimation necessary for pipe deterioration diagnosis is performed in advance.
- Patent Document 1 describes a water leakage survey planning device and the like. In the water leakage investigation plan described in Patent Document 1, it is described that the total cost consisting of the sum of the water leakage cost and the investigation cost is designed to minimize the total cost.
- the diagnosis may be performed using measuring devices such as sensors attached to the piping.
- measuring devices such as sensors attached to the piping.
- these points are not necessarily considered.
- the present invention has been made to solve the above-mentioned problems, and has as its main object to provide a diagnostic cost output device and the like that can determine the diagnostic cost.
- a diagnostic cost output device includes a detection performance specifying unit that specifies a measurement time required for leak detection with respect to a sensor installation interval based on information that affects vibration propagation characteristics of piping, and a sensor installation Output means for outputting a diagnostic cost for the installation interval based on the cost and the measurement cost generated by leakage detection at the measurement time.
- the diagnostic cost output method specifies the measurement time required for leakage detection for the sensor installation interval based on information affecting the vibration propagation characteristics of the pipe, and sets the sensor installation cost and measurement. Based on the measurement cost generated by leak detection in time, the diagnostic cost for the installation interval is output.
- the computer-readable recording medium is a computer-readable recording medium that specifies a measurement time required for leak detection with respect to a sensor installation interval based on information that affects vibration propagation characteristics of piping.
- a program for executing a process for outputting a diagnostic cost for an installation interval based on a sensor installation cost and a cost generated by leakage detection at a measurement time is stored temporarily.
- each component of each device represents a functional unit block. Part or all of each component of each device is realized by an arbitrary combination of an information processing device 500 and a program as shown in FIG. 15, for example.
- the information processing apparatus 500 includes the following configuration as an example.
- CPU Central Processing Unit
- ROM Read Only Memory
- RAM Random Access Memory
- a program 504 loaded into the RAM 503
- a storage device 505 for storing the program 504
- a drive device 507 for reading / writing the recording medium 506
- Communication interface 508 connected to the communication network 509
- An input / output interface 510 for inputting / outputting data -Bus 511 connecting each component
- Each component of each device in each embodiment is realized by the CPU 501 acquiring and executing a program 504 that realizes these functions.
- the program 504 that realizes the function of each component of each device is stored in advance in the storage device 505 or the RAM 503, for example, and is read by the CPU 501 as necessary.
- the program 504 may be supplied to the CPU 501 via the communication network 509 or may be stored in the recording medium 506 in advance, and the drive device 507 may read the program and supply it to the CPU 501.
- each device may be realized by an arbitrary combination of the information processing device 500 and a program that are separately provided for each component.
- a plurality of constituent elements included in each device may be realized by an arbitrary combination of one information processing device 500 and a program.
- each device is realized by general-purpose or dedicated circuits including a processor or a combination thereof. These may be configured by a single chip or may be configured by a plurality of chips connected via a bus. Part or all of each component of each device may be realized by a combination of the above-described circuit and the like and a program.
- each device When some or all of the constituent elements of each device are realized by a plurality of information processing devices and circuits, the plurality of information processing devices and circuits may be centrally arranged or distributedly arranged. Also good.
- the information processing apparatus, the circuit, and the like may be realized as a form in which each is connected via a communication network, such as a client and server system and a cloud computing system.
- FIG. 1 is a diagram showing a diagnostic cost calculation apparatus according to the first embodiment of the present invention.
- the diagnostic cost output device 100 includes at least a detection performance specifying unit 110 and an output unit 120.
- the detection performance specifying unit 110 specifies a measurement time required for leak detection with respect to the installation interval of the sensors based on information affecting the vibration propagation characteristics of the pipe.
- the output unit 120 outputs the diagnostic cost for the installation interval based on the installation cost of the sensor and the measurement cost generated by the leak detection at the measurement time.
- the diagnostic cost output device 100 may include a storage unit 150 shown in FIG.
- the storage unit 150 stores at least information related to the installation cost and the measurement cost. Details of the information related to the information related to the installation cost and the measurement cost will be described later.
- the diagnostic cost output apparatus 100 may include an acquisition unit (not shown) that acquires information related to information related to the installation cost and the measurement cost in combination with or in place of the storage unit 150.
- the diagnosis cost output apparatus 100 performs a diagnosis relating to pipe deterioration including the presence or absence of leakage from the pipe (hereinafter referred to as “deterioration diagnosis”) using a measuring device such as a sensor attached to the pipe. Find the diagnostic cost for the case. First, an example of a diagnostic device used for piping deterioration diagnosis will be described.
- FIG. 2 shows an example of the diagnostic device 10 that is the target of the diagnostic cost output by the diagnostic cost output device 100.
- the diagnostic device 10 performs piping deterioration diagnosis including determination of the presence or absence of leakage from the piping, using a measuring device such as a measuring instrument 11 attached to the piping. That is, the diagnostic device 10 diagnoses the state of the pipe including the presence or absence of leakage from the pipe based on the results of measurement by the plurality of measuring instruments 11.
- Each of the plurality of measuring instruments 11 detects vibration that propagates the pipe 1 and the fluid inside the pipe 1.
- the measuring instrument 11 may have any frequency characteristic and sensitivity that can detect vibration caused by leakage, and any type is acceptable.
- a vibration sensor, a water pressure sensor, a hydrophone, or the like is used as the measuring instrument 11, for example, a vibration sensor, a water pressure sensor, a hydrophone, or the like is used.
- FIG. 2 shows two measuring instruments 11 as an example.
- the distance L between the two measuring instruments 11 is referred to as “installation interval”.
- the number of measuring instruments 11 used by the diagnostic device 10 is not particularly limited. A necessary number of measuring instruments 11 are appropriately used according to the length of the pipe 1 to be diagnosed by the diagnostic apparatus 10.
- the measuring instrument 11 When the pipe 1 is buried, the measuring instrument 11 is attached to, for example, a valve plug 2 such as a fire hydrant or a stop cock that can be easily accessed from the outside.
- a valve plug 2 such as a fire hydrant or a stop cock that can be easily accessed from the outside.
- the measuring instrument 11 may be directly attached to the outer surface of the pipe 1 or the like.
- deterioration of piping includes fluid leakage from the piping.
- the leakage of fluid from the pipe is generally generated by the above-described leakage hole 3 in the pipe 1.
- the diagnosis apparatus 10 mainly uses the detection of fluid leakage from the pipe 1 as an object of deterioration diagnosis.
- the diagnostic device 10 has a problem such as leakage in the pipe 1 judge.
- FIG. 2 shows an example in which the leak hole 3 is formed in the pipe 1.
- the diagnostic apparatus 10 for example, magnitudes of vibration displacement, speed, acceleration, etc. are used as the magnitude of vibration. However, another index related to vibration may be used as the magnitude of vibration.
- the diagnosis device 10 may perform a type of deterioration diagnosis different from the leak detection based on the magnitude of vibration or the like.
- the diagnostic device 10 determines whether or not the leakage hole 3 has a vibration based on the time difference until the vibration (hereinafter referred to as “leakage vibration”) due to deterioration of the pipe 1 including fluid leakage or the like reaches the two measuring instruments 11. The position where such deterioration has occurred is specified. This time difference is obtained based on a correlation between waveforms representing vibrations measured by the two measuring instruments 11.
- the diagnostic cost output device 100 in the present embodiment obtains the cost required when the diagnostic diagnosis such as leakage detection of the pipe 1 by the diagnostic device 10 is performed as the diagnostic cost.
- the diagnostic cost output apparatus 100 in the present embodiment mainly obtains the sum of the cost required for installing the measuring instrument 11 and the cost required for performing the deterioration diagnosis by the diagnostic apparatus 10 as the diagnostic cost. That is, the diagnostic cost includes the cost required for installing the measuring instrument 11 and the cost required when performing the deterioration diagnosis by the diagnostic device 10. Note that the cost required for installing the measuring instrument 11 is also referred to as installation cost.
- the cost required for installing the measuring instrument 11 includes, for example, the labor cost of the person who installs the measuring instrument 11, the cost of the equipment used for installing the measuring instrument 11, and the like.
- the cost required when performing the deterioration diagnosis by the diagnostic device 10 includes, for example, the cost required for the operation of the diagnostic device 10 and the personnel cost of personnel required when performing the deterioration diagnosis by the diagnostic device 10. .
- a cost different from the cost described above may be included in each of the cost required for installing the measuring instrument 11 or the cost required for performing the deterioration diagnosis by the diagnostic device 10.
- the water supply network is the main target.
- the water supply network is generally constituted by a large number of pipes 1. Therefore, when the water supply network is a target of diagnosis by the diagnostic device 10, a large number of measuring instruments 11 need to be attached to the pipes 1 constituting the water supply network so that many ranges of the pipes 1 are covered. There is a case.
- the cost related to the diagnosis is suppressed. Therefore, when performing the deterioration diagnosis of piping using the diagnostic apparatus 10, it is conceivable to increase the installation interval between each of the plurality of measuring instruments 11. By increasing the installation interval of the plurality of measuring instruments 11, the number of measuring instruments 11 per unit length of piping is reduced. Therefore, the cost for installing the measuring instrument 11 may be reduced.
- the leak vibration that propagates the pipe and the fluid flowing in the pipe attenuates according to the distance from the point where the leak occurs. Therefore, when the position where the measuring instrument 11 is provided and the point where the leakage occurs are separated, the magnitude of the leakage vibration detected by the measuring instrument 11 satisfies the above-described predetermined condition due to attenuation. There is a possibility of disappearing. For example, there is a possibility that the magnitude of the leakage vibration does not exceed a predetermined magnitude.
- the diagnostic apparatus 10 analyzes the vibration detected by the measuring instrument 11, it is distinguished from the leakage vibration and the steady vibration or other noise caused by the fluid flowing through the pipe. May be difficult. That is, since the installation interval of the measuring instrument 11 is increased, there is a possibility that the presence or absence of leakage by the diagnostic device 10 is not correctly determined. In addition, even when the presence or absence of leakage is correctly determined, it may be difficult to diagnose the location where the leakage has occurred.
- the diagnosis device 10 can determine whether or not there is a leak and specify the position where the leak has occurred, the influence of noise and the like increases due to the increased installation interval of the measuring instrument 11. In this case, compared with the case where the installation interval of the measuring instrument 11 is relatively small, it may be necessary to take a long time for the measurement by the measuring instrument 11 or the like.
- the installation interval of the measuring instrument 11 generally has an upper limit that enables appropriate deterioration diagnosis such as appropriate detection of leakage vibration.
- the installation interval is increased, a long time may be required for measurement even if appropriate deterioration diagnosis is possible.
- the cost required for the deterioration diagnosis by the diagnostic device 10 may increase.
- reducing the installation interval of the measuring instrument 11 may reduce the cost required for the deterioration diagnosis by the diagnostic device 10.
- the upper limit distance of the installation interval of the measuring instrument 11 at which leakage vibration can be detected is referred to as “detectable distance”.
- the case where the above-described leakage vibration can be detected represents a case where the leakage vibration can be distinguished from noise or the like, for example.
- the leakage vibration it may be possible to identify the position where the leakage has occurred by performing the deterioration diagnosis by the diagnostic device 10.
- the characteristic of damping the vibration propagating through the pipe is called the damping characteristic.
- the attenuation characteristics vary according to the type of piping such as the material and diameter of the piping, the type of fluid flowing through the piping, the conditions of the location where the piping is embedded, and the like.
- the attenuation characteristic is obtained experimentally, for example.
- the attenuation characteristic may be theoretically obtained using a model related to piping.
- the attenuation characteristic ⁇ is obtained by using an attenuation model shown in the following equation (1).
- a represents the diameter of the pipe
- h represents the wall thickness of the pipe
- E represents the Young's modulus of the pipe
- ⁇ represents the damping ratio of the pipe.
- the piping damping ratio ⁇ indicates the degree of vibration attenuation.
- B represents the bulk modulus of the fluid
- C f represents the sound velocity of the fluid
- ⁇ represents the angular frequency of the vibration propagating through the fluid.
- the attenuation characteristic When the attenuation characteristic is theoretically obtained using a model, a model different from the above-described equation (1) may be used as the attenuation model.
- the attenuation characteristic may be obtained by combining an experimental method and a method using a model.
- the detectable distance l det can be obtained by using, for example, the following equation (2).
- ⁇ represents the damping characteristic represented by the expression (1)
- S src represents the magnitude of vibration caused by the leakage at the point where the leakage occurs.
- N tot represents a noise level.
- the noise level represents the magnitude of noise included in a signal indicating vibration detected by the measuring instrument 11.
- Noise includes, for example, vibration caused by causes other than leakage vibration, observation noise such as circuit noise of the measuring instrument, quantization noise when the signal measured by the measuring instrument 11 is converted from an analog signal to a digital signal, and the like. included.
- the noise level is obtained, for example, by actually measuring dark vibration, which is vibration other than leakage vibration in the environment where the measuring instrument 11 is installed, or measuring instrument noise of the measuring instrument 11.
- PSR th indicates a threshold value when it is determined that leakage has occurred. That is, the size of the vibration detected by the measuring instrument 11 is greater than the PSR th when (or magnitude in a PSR th or higher), the leakage is a deterioration of the pipe 1 is determined to have occurred.
- ⁇ represents a constant, and a value is appropriately determined as necessary.
- FIG. 3 is a conceptual diagram illustrating an example of a relationship between a pipe diameter that is a pipe diameter and a detectable distance.
- the horizontal axis indicates the tube diameter
- the vertical axis indicates the detectable distance obtained using the equation (2) or the like. As shown in FIG. 3, the detectable distance tends to decrease as the tube diameter increases.
- the relationship between the pipe diameter and detectable distance shown in Fig. 3 differs for each type of piping. That is, the relationship between the pipe diameter and the detectable distance changes for each of the pipes having different attenuation characteristics ⁇ , such as different materials and wall thicknesses. Therefore, the relationship between the pipe diameter and the detectable distance as shown in FIG. 3 is required for each of the pipes having different attenuation characteristics ⁇ . In the graph shown in FIG. 3, the relationship between the pipe diameter and the detectable distance for two pipes A and B of different types is required.
- the installation interval of the measuring instrument 11 depends on the type of the pipe 1 to be measured as shown in FIG. It is necessary to be smaller than the detectable distance determined by
- the time required for diagnosis is It changes according to the installation interval of the measuring instrument 11. That is, since the installation interval of the measuring instrument 11 is increased, a long time may be required for measurement related to leakage detection in order to reduce the influence of noise and the like.
- the time required for the diagnosis is related to the cost required when performing the deterioration diagnosis by the diagnosis device 10.
- FIG. 4 shows a time required for measuring the leakage vibration generated in the pipe 1 by the measuring instrument 11 (hereinafter referred to as “measurement time”), and a place where the leakage vibration that can be detected by the measuring instrument 11 by the measurement of the time has occurred.
- the relationship with the distance from the measuring instrument 11 is shown.
- the horizontal axis indicates the measurement time required for measuring the leakage vibration by the measuring instrument 11.
- the vertical axis indicates the distance from the measuring instrument 11 to the place where the leakage vibration that can be detected by the measuring instrument 11 has occurred.
- the graph shown in FIG. 4 is obtained, for example, by actually measuring leakage vibration or pseudo vibration similar to the leakage vibration. For example, by actually measuring leakage vibrations or pseudo vibrations similar to the leakage vibrations for several distances or measurement times, and obtaining the time required for the measurement, from the measuring instrument 11 to the place where the leakage occurred A relationship between a specific distance and measurement time can be obtained. By obtaining this relationship with respect to a plurality of distances from the measuring instrument 11 to the place where the leakage has occurred, the graph shown in FIG. 4 is obtained.
- the graph shown in FIG. 4 may be obtained by obtaining an approximate expression based on the relationship between several distances from the measuring instrument 11 to the place where the leakage has occurred and the measurement time.
- the graph shown in FIG. 4 may be theoretically obtained based on a model related to vibration damping or the like.
- leakage vibration generated at a point relatively far from the measuring instrument 11 that is, a point away from the measuring instrument 11
- leakage vibration generated at a point relatively far from the measuring instrument 11 that is, a point away from the measuring instrument 11
- the distance from the measuring instrument 11 to the place where the leakage vibration occurs that is, the distance from the measuring instrument 11 to the place where the leakage vibration that can be detected by the measuring instrument 11 is converged according to, for example, the detectable distance described above.
- the diagnosis cost output device 100 is not limited to the cost required for the installation of the measuring instrument 11, but pays attention to the cost required for the deterioration diagnosis by the diagnosis device 10. Find the diagnostic cost required for Considering both the cost required for installation of the measuring instrument 11 and the cost required for the deterioration diagnosis by the diagnostic device 10 as the diagnostic cost, the installation interval of the measuring instrument 11 and the like that can reduce the diagnostic cost can be easily determined. It becomes possible.
- the detection performance specifying unit 110 is necessary for leak detection, which is one of the deterioration diagnosis of the pipe 1 with respect to the installation interval of the measuring instrument 11, based on the information that affects the vibration propagation characteristics of the pipe 1.
- the measurement time required for leak detection with respect to the installation interval of the measuring instrument 11 is a measurement time required when the installation interval of the measuring instrument 11 is set to some interval.
- the measurement time required for leakage detection with respect to the installation interval of the measuring instrument 11 is an index related to the detection performance of the measuring instrument 11.
- the measurement time of the measuring instrument 11 required for leak detection changes. That is, the cost required for the deterioration diagnosis by the diagnostic device 10 changes as the measurement time of the measuring instrument 11 required for leak detection changes.
- the detection performance specifying unit 110 specifies the measurement time required for leak detection with respect to the installation interval of the measuring instrument 11 as information necessary for obtaining the cost required for the deterioration diagnosis of the pipe 1 such as leak detection.
- the detection performance specifying unit 110 may specify a measurement time required for leak detection with respect to a predetermined specific installation interval.
- specification part 110 may specify the measurement time required for leak detection regarding the range of a certain installation interval.
- the measurement time required for leak detection with respect to the sensor installation interval is represented as shown in FIG. 5 as an example.
- the horizontal axis represents the installation interval of the measuring instrument 11, and the vertical axis represents the measurement time required for leakage detection. That is, at least the measurement time shown in FIG. 5 is required for a plurality of measuring instruments 11 attached to the pipe 1 at a certain installation interval. In the example shown in FIG. 5, it is shown that the required measurement time increases when the installation interval of the measuring instrument 11 increases.
- the installation interval of the measuring instrument 11 in the graph shown in FIG. 5 corresponds to the distance from the measuring instrument 11 in the graph shown in FIG. That is, the graph shown in FIG. 5 corresponds to a graph in which the vertical axis and the horizontal axis of the graph shown in FIG. 4 are interchanged.
- the graph shown in FIG. 5 is obtained by actually measuring, for example, leakage vibration, pseudo vibration similar to the leakage vibration, and the like, similar to the graph shown in FIG. Further, the graph shown in FIG. 5 may be obtained based on an approximate expression determined based on an actually measured value or the like, a model related to vibration attenuation, or the like.
- the relationship between the installation interval of the measuring instrument 11 shown in FIG. 5 and the measurement time required for leak detection differs depending on the vibration propagation characteristics of the pipe 1 that is the target of leak detection. That is, the measurement time required for leak detection with respect to the installation interval of the measuring instrument 11 varies depending on, for example, the attenuation characteristic ⁇ of the pipe 1 described above. Therefore, the detection performance specifying unit 110 specifies the measurement time required for leak detection with respect to the installation interval of the measuring instrument 11 based on information that affects the vibration propagation characteristics of the pipe.
- Information that affects the vibration propagation characteristics of piping includes, for example, propagation including the type of piping 1, the length of piping 1, the environment around the location where piping 1 is embedded, and the like.
- the type of the pipe 1 is determined by the material, thickness, pipe diameter, etc. of the pipe 1.
- parameters used in the above-described equation (1) or (2) may be included.
- specification part 110 is measurement time required for the leak detection with respect to the installation space
- information that affects the vibration propagation characteristics for a specific pipe 1 may be referred to as a measurement condition.
- the information used by the detection performance specifying unit 110 that affects the vibration propagation characteristics of the pipe is not limited to the above-described conditions.
- the measurement time may change according to the time zone in which the measurement by the measuring instrument 11 is performed.
- environmental noise generally tends to increase during daytime hours. In the measurement by the measuring instrument 11, the environmental noise may affect as noise. Therefore, the measurement time tends to increase during the daytime.
- the information that affects the vibration propagation characteristics of the pipe 1 may include a time zone in which measurement by the measuring instrument 11 is performed.
- the detection performance specifying unit 110 may specify the measurement time required for leak detection according to the time zone in which the measurement by the measuring instrument 11 is performed. Further, information different from the information described above may be used as information that affects the vibration propagation characteristics of the pipe 1 as necessary.
- the detection performance specifying unit 110 acquires information that affects the vibration propagation characteristics of the pipe 1 and information that specifies measurement conditions regarding the pipe that is the target of leakage detection, for example, via an input unit (not shown) or a communication network. . Further, information that affects the vibration propagation characteristics of the piping 1 such as parameters used in the above-described equation (1) or (2) may be stored in advance in the storage unit 150 shown in FIG. The detection performance specifying unit 110 acquires these information from the storage unit 150 and refers to them as necessary.
- the storage unit 150 is realized by the storage device 505 of the information processing device 500, for example.
- the storage unit 150 may be realized by an external storage device or the like connected to the diagnostic cost output device 100 via a wired or wireless communication network.
- the detection performance specifying unit 110 specifies the measurement time required for leak detection with respect to the installation interval of the measuring instrument 11, such as the graph shown in FIG.
- the detection performance specifying unit 110 specifies a measurement time required for leak detection with respect to the installation interval of the measuring instrument 11 using a result measured in advance by the measuring instrument 11.
- Measured results are obtained as follows, for example. First, using a plurality of measuring instruments 11 installed at specific intervals, detection of vibration propagating through the pipe 1 in which leakage occurs (or pseudo vibration corresponding to leakage vibration is applied) is detected. For example, it is performed for each measurement condition described above. The vibration detection is performed a plurality of times, for example, by changing the measurement time.
- specification part 110 specifies the measurement time required for the leak detection with respect to the installation space
- the result measured in advance is stored in the storage unit 150, for example.
- the actually measured result is stored in the storage unit 150 in the form of a table indicating the relationship between the installation interval and the measurement time required for leakage detection for each measurement condition.
- the detection performance specifying unit 110 selects a related table according to the designated measurement condition.
- specification part 110 refers to the measurement time measured with respect to the installation space
- specification part 110 may need to specify the measurement time required for leak detection with respect to the other installation interval different from the measured installation interval.
- the detection performance specifying unit 110 specifies the measurement time required for leak detection for another installation interval different from the measured installation interval of the measuring instrument 11 based on the actually measured value. Also good.
- the detection performance specifying unit 110 may generate an approximate expression or the like indicating the relationship between the installation interval of the measuring instrument 11 and the measurement time necessary for leakage detection, based on the results actually measured in this way. Good.
- the detection performance specifying unit 110 may use the generated approximate expression or the like when specifying the measurement time necessary for leak detection for another installation interval different from the actually measured installation interval. Moreover, the detection performance specific
- the detection performance specifying unit 110 uses the model to set the installation interval of the measuring instrument 11. You may specify the measurement time required for the leak detection with respect to.
- the model representing the relationship between the installation interval of the measuring instrument 11 and the measurement time necessary for leakage detection may be stored in the storage unit 150 generated in advance, or the detection performance is specified as necessary.
- the unit 110 may generate appropriately.
- the detection performance specifying unit 110 may specify the measurement time required for leak detection with respect to the installation interval of the measuring instrument 11 using a combination of both the actually measured value and the model.
- the detection performance specifying unit 110 may specify the measurement time for the installation interval of the measuring instrument 11 related to other measurement conditions using the result specified for the measurement conditions.
- the output unit 120 outputs the diagnostic cost for the installation interval of the measuring instrument 11 based on the installation cost of the measuring instrument 11 and the measurement cost generated by leakage detection at the measurement time specified by the detection performance specifying unit 110.
- the diagnosis cost indicates a cost required when a deterioration diagnosis using the diagnosis device 10 is performed on the pipe 1 with a specific extension.
- the diagnostic cost for the installation interval of the measuring instrument 11 is a diagnostic cost that occurs when the installation interval of the measuring instrument 11 is set to some interval.
- the pipe 1 that is the target of output of the diagnostic cost may be configured by a plurality of pipes like a water supply network.
- the cost required when the deterioration diagnosis of the pipe 1 using the diagnostic device 10, which is the diagnostic cost is necessary for the above-described cost for installing the measuring instrument 11 and leakage detection using the measuring instrument 11. Mainly included.
- the output unit 120 outputs the diagnostic cost for the installation interval of the measuring instrument 11 using the measurement time specified by the detection performance specifying unit 110. Specifically, the output unit 120 assumes that the diagnosis cost includes the sum of the cost required for installation of the measuring instrument 11 and the cost required for execution of diagnosis such as leakage detection using the measuring instrument 11. Output.
- the diagnostic cost for various installation intervals of the measuring instrument 11 is output by the output unit 120, so that it is possible to grasp the diagnostic cost that is necessary when the piping deterioration diagnosis using the diagnostic device 10 is performed. As a result, it becomes easy to grasp the installation interval of the measuring instrument 11 so that the diagnostic cost is reduced.
- FIG. 6 is a conceptual diagram showing the relationship of the diagnostic cost required for the installation interval of the measuring instrument 11.
- the horizontal axis represents the installation interval of the measuring instrument 11, and the vertical axis represents the cost.
- the solid line represents an example of the diagnostic cost that is the output of the output unit 120.
- the dotted line represents the cost required for installing the measuring instrument 11.
- a broken line represents the cost required when performing the deterioration diagnosis of the piping 1 using the measuring instrument 11.
- the number of measuring instruments 11 per unit length of the piping is reduced by increasing the installation interval of the measuring instruments 11.
- the cost of the measuring instrument 11 itself and the cost required for installing the measuring instrument 11 are reduced. Therefore, the cost required for installing the measuring instrument 11 is reduced by increasing the installation interval of the plurality of measuring instruments 11.
- the dotted line graph shows that the cost decreases as the installation interval increases.
- the cost required for installing the measuring instrument 11 includes, for example, the labor cost of the person who installs the measuring instrument 11, the cost of the equipment used for installing the measuring instrument 11, and other work costs.
- the cost required for leak detection using the measuring instrument 11 includes personnel costs for personnel who perform diagnosis, operating costs for the diagnostic device 10 or the measuring instrument 11, and the like. And when a long time is required for leak detection, personnel expenses corresponding to the time are required. Therefore, the cost required for leak detection using the measuring instrument 11 generally increases as the installation interval between the measuring instruments 11 increases. Also in the example of FIG. 6, the broken line graph indicates that the cost increases as the installation interval increases.
- Equation (3) shows an example of an evaluation function related to the diagnostic cost.
- the case where the sum of the expense required for installation of the measuring instrument 11 and the expense required for leakage detection using the measuring instrument 11 is included in the diagnostic cost is assumed.
- Equation (3) represents the diagnostic cost required for the deterioration diagnosis for the pipe 1 having a predetermined length with respect to the installation interval l of the measuring instrument 11.
- the output unit 120 outputs the diagnostic cost, for example, according to equation (3).
- C t (l) represents the cost required to install the measuring instrument 11.
- C t (l) is obtained based on the cost per one measuring instrument 11 and the number of measuring instruments 11 installed in the pipe 1. As an example, C t (l) is obtained by multiplying the cost per one measuring instrument 11 by the number of measuring instruments 11 installed in the pipe 1.
- the cost per one includes the cost of the measuring instrument 11 itself, the cost required to install the measuring instrument 11, and the like.
- the number of measuring instruments 11 installed in the pipe 1 can be obtained, for example, by dividing the installation interval of the measuring instruments 11 from a predetermined length.
- C s (l) represents the cost required for leak detection using the measuring instrument 11.
- C s (l) is obtained by multiplying the cost per unit time necessary for leak detection and the measurement time required for leak detection.
- the cost per unit time necessary for leakage detection includes the labor cost of the person who performs the detection, the operation cost of the diagnostic device 10 or the measuring instrument 11, and the like.
- the measurement time required for leakage detection uses the result specified by the detection performance specifying unit 110 described above.
- ⁇ 1 and ⁇ 2 are correction coefficients.
- ⁇ 1 and ⁇ 2 are appropriately determined according to the degree of contribution to the diagnostic cost of the cost required for installation of the measuring instrument 11 and the cost required for leakage detection using the measuring instrument 11.
- ⁇ 1 and ⁇ 2 may be appropriately determined according to the situation of the pipe 1 to be subjected to the deterioration diagnosis.
- the output unit 120 outputs the diagnostic cost for the installation interval based on the installation cost of the measuring instrument 11 and the measurement cost generated by leak detection at the measurement time required for the installation interval of the measuring instrument 11. .
- the output unit 120 outputs a diagnosis cost for each pipe having different vibration propagation characteristics. That is, the diagnostic cost is output according to the type of the pipe 1 having different materials and diameters.
- the unit 120 outputs a diagnostic cost for each of a plurality of cases.
- the information used in the output unit 120 is stored in the storage unit 150, for example, similarly to the information used in the detection performance specifying unit 110.
- the information stored in the storage unit 150 includes information on the type of the pipe 1, information on the cost required for installing the measuring instrument 11, or deterioration diagnosis of the pipe 1 by the diagnostic device 10 using the result detected by the measuring instrument 11. Information on required expenses is included.
- the output unit 120 appropriately acquires information referred to the storage unit 150 and outputs a diagnosis cost.
- the information related to the cost required for installing the measuring instrument 11 includes, for example, the price per one measuring instrument 11 and the work cost required for installing the measuring instrument 11 on the pipe 1.
- the price per one for each is included in the information related to the cost required to install the measuring instrument 11.
- the work cost required for installing the measuring instrument 11 on the pipe 1 includes the work cost corresponding to the type of the measuring instrument 11 and the place where the measuring instrument 11 is installed.
- the information related to the cost required for deterioration diagnosis such as leakage detection by the diagnostic device 10 includes labor cost per unit time required for the deterioration diagnosis, operation cost of the diagnostic device 10, and the like.
- the labor cost per unit time required for the deterioration diagnosis differs according to various conditions, the labor cost according to these conditions may be included in the information related to the cost required for the deterioration diagnosis by the diagnostic device 10. .
- the output unit 120 may output diagnostic costs according to various conditions different from the above-described factors related to leakage detection. For example, the output unit 120 may output the diagnostic cost according to the time zone in which the measurement by the measuring instrument 11 is performed, as in the case of specifying the measurement time by the detection performance specifying unit 110.
- the labor cost of personnel required for measurement may vary depending on the time zone during which diagnosis is performed. Labor costs when diagnosis is performed at night tend to be higher than labor costs when diagnosis is performed during the day.
- the time required for leak detection may vary depending on the time zone during which measurement is performed. For example, the time required for measurement when measurement is performed during the day may be longer than the time required for measurement when measurement is performed at night because the environmental noise is large. Therefore, the output unit 120 may output a diagnosis cost for each time period during which diagnosis is performed.
- the storage unit 150 When the diagnosis cost is output according to the time zone in which the measurement by the measuring instrument 11 is performed, the storage unit 150 has information on the cost required for the deterioration diagnosis by the measuring instrument 11 per unit time according to the time slot. It may be stored.
- the output unit 120 refers to these pieces of information and outputs a diagnosis cost for each time period in which diagnosis is performed.
- information stored in the storage unit 150 is not particularly limited. Information related to other expenses necessary for outputting the diagnostic cost by the output unit 120 may be stored.
- the output unit 120 acquires information stored in the storage unit 150 as necessary, and outputs a diagnosis cost.
- the output unit 120 may output the diagnostic cost based on conditions different from the above-described conditions. That is, the output unit 120 considers these other factors by using information on other factors different from the cost required for installation of the measuring instrument 11 and the cost required for leak detection using the measuring instrument 11.
- the diagnostic cost may be output. In this case, other factors are appropriately determined according to the operation status of the water supply company that owns the pipe 1, other situations related to the pipe 1, and the like.
- the output unit 120 obtains a diagnostic cost regarding the installation interval of the measuring instrument 11 included in the above-described detectable distance range, for example.
- the output unit 120 outputs the diagnostic cost only for the installation interval included in the range of the detectable distance, so that the installation interval of the measuring instrument 11 determined based on the output diagnostic cost is the range of the detectable distance described above. include. That is, the output unit 120 outputs the diagnostic cost within a range in which the diagnosis device 10 can determine whether or not there is a leak.
- the detection performance specifying unit 110 specifies the measurement time for the installation interval of the measuring instrument 11 based on the information that affects the vibration propagation characteristics of the pipe 1 (step S101). Information that affects the vibration propagation characteristics related to the pipe 1 is appropriately acquired in advance when executing this step.
- the output unit 120 outputs the diagnostic cost for the measurement time based on the installation cost of the measuring instrument 11 and the measurement cost generated by the leakage detection at the measurement time specified in step S101 ( Step S102).
- the output unit 120 appropriately acquires the cost required for installation of the measuring instrument 11 from the storage unit 150, the cost per unit time necessary for the deterioration diagnosis by the diagnostic device 10 using the result of the measuring instrument 11, and the like from the storage unit 150. Output the diagnostic cost.
- steps S101 and S102 may be repeated as appropriate.
- the diagnostic cost output device 100 outputs the diagnostic cost required for the deterioration diagnosis by the diagnostic device 10.
- Diagnostic cost changes according to the installation interval of the measuring instrument 11 included in the diagnostic apparatus 10.
- the measurement time varies depending on the installation interval of the measuring instrument 11.
- the measuring time of the measuring instrument 11 affects the cost required for the deterioration diagnosis of the pipe 1 such as leakage detection by the diagnostic device 10 using the result of measurement by the measuring instrument 11. Therefore, in the diagnostic cost output device 100, the detection performance specifying unit 110 specifies the measurement time for the installation interval of the measuring instrument 11.
- the output part 120 outputs diagnostic cost based on the expense required for installation of the measuring instrument 11, and the expense required for execution of deterioration diagnosis of the piping 1, such as leak detection by the diagnostic apparatus 10.
- the diagnostic cost output device 100 can output a diagnostic cost in consideration of the cost required for installing the measuring instrument and the cost required for executing the deterioration diagnosis of the pipe using the measurement result by the measuring instrument.
- the diagnostic cost output device 100 By using the diagnostic cost output device 100, for example, it is possible to grasp the diagnostic cost before the installation of the measuring instrument 11 is installed. When the deterioration diagnosis of the pipe 1 using the diagnostic device 10 is performed, it is possible to install the measuring instrument 11 at an installation interval that reduces the diagnostic cost. That is, the diagnostic cost output device 100 can reduce the diagnostic cost when the deterioration diagnosis of the pipe 1 using the diagnostic device 10 is performed.
- the detectable distance is taken into consideration. Therefore, it is possible to output the diagnostic cost within a range in which leakage detection by the diagnostic device 10 is possible.
- FIG. 8 is a diagram showing a diagnostic cost calculation apparatus according to the second embodiment of the present invention.
- the diagnostic cost output apparatus 200 includes a detection performance specifying unit 110, an output unit 120, and an operation cost output unit 230.
- the detection performance specifying unit 110 and the output unit 120 are the same elements as those included in the diagnostic cost output device 100 in the first embodiment described above.
- the operation cost output unit 230 outputs the operation cost for the installation interval of the measuring instrument 11 based on the diagnosis cost and the cost reduced by the leakage detection in the pipe 1.
- the operation cost is a cost in which the cost reduced by the leakage detection is further considered with respect to the diagnosis cost described above.
- the diagnostic cost output device 200 may include a storage unit 250.
- the storage unit 250 stores the same information as the storage unit 150 in the first embodiment.
- the storage unit 250 also stores information necessary for outputting operation costs.
- the diagnostic cost output device 100 in the first embodiment outputs a diagnostic cost that is a cost required for deterioration diagnosis such as leakage detection by the diagnostic device 10. That is, the diagnostic cost output device 100 calculates the cost that is directly required for the degradation diagnosis. Then, by comparing various conditions, etc., it is possible to reduce the cost directly required for the deterioration diagnosis by the diagnostic device 10.
- the diagnosis device 10 makes a diagnosis that the pipe 1 is deteriorated due to leakage or the like, the repair is generally performed at a place where the pipe 1 is diagnosed as leaking.
- the repairing of the piping 1 such as the repair of the leakage hole is performed, thereby reducing the cost caused by the deterioration of the leakage or the like. there is a possibility.
- the pipe 1 is a water pipe of a water supply and the leak hole 3 is generated in the pipe 1 due to deterioration, the water loss due to the leak can be suppressed by repairing the pipe 1. For this reason, the cost required for the production and distribution of leaked water is reduced. Further, the deterioration diagnosis by the diagnosis device 10 may be performed, so that deterioration of the pipe 1 such as leakage may be detected at a slight stage. In this case, the cost required for repairing the pipe 1 can be reduced as compared with the case where the pipe 1 is detected at a stage where the deterioration has progressed or when the deterioration further progresses and the pipe 1 is ruptured. May be possible.
- the diagnosis device 10 performs deterioration diagnosis of the pipe 1 such as leakage detection, so that the cost required for repairing the pipe 1 in the above case can be reduced. There is a case.
- the diagnostic device 10 when examining the cost required for the deterioration diagnosis by the diagnostic device 10, it may be preferable to consider not only the above-described diagnostic cost but also the cost that can be reduced by the diagnosis. In other words, there is a possibility that not only the diagnostic cost required by the diagnostic cost output device 100 in the first embodiment is reduced, but also the cost related to the overall operation of the pipe 1 can be further reduced by increasing the reduced cost. is there.
- the diagnostic cost output device 200 in the present embodiment obtains the cost required for the diagnosis of the pipe 1 with the cost reduced by the deterioration diagnosis by the diagnostic device 10 as one factor.
- the operation cost is obtained, for example, by subtracting the cost reduced by the deterioration diagnosis such as leakage detection by the diagnosis device 10 from the diagnosis cost.
- the diagnosis apparatus 10 mainly uses the presence or absence of fluid leakage from the pipe 1 as an object of deterioration diagnosis.
- the cost that can be reduced by the diagnosis of the deterioration of the pipe 1 by the diagnostic device 10 is generally assumed to change according to the number of leaks detected by the diagnostic device 10.
- the number of leaks detected by the diagnostic device 10 is assumed to be related to the installation interval of the measuring instrument 11. First, the relationship between the installation interval of the measuring instrument 11 and the number of leaks detected will be described.
- the installation interval between the measuring instruments 11 is widened, so that the pipe 1 to be subjected to deterioration diagnosis by the diagnostic device 10
- the range increases. That is, as shown in the conceptual diagram of FIG. 9 (1), the installation interval of the measuring instrument 11 increases, so that the ratio of the pipe 1 that is the target of deterioration diagnosis by the diagnostic device 10 increases. That is, the coverage of deterioration diagnosis by the diagnostic device 10 is increased. Therefore, from the viewpoint of the degree of completeness of the deterioration diagnosis, for example, when the number of measuring instruments 11 is fixed in advance as described above, an increase in the installation interval of the measuring instruments 11 is detected by the diagnostic apparatus 10. It is assumed that this is due to an increase in the number of leaks.
- the degree of coverage is the piping 1 that is actually diagnosed by the diagnostic device 10 by the measuring instrument 11 attached to the piping 1 out of the total length of the piping 1 that can be diagnosed by the diagnostic device 10.
- the ratio of the extension is shown. For example, when the pipe 1 is a water supply water pipe, the total length of the pipe 1 corresponds to the entire length of the pipe 1 managed by a specific water company. And the value which remove
- the installation interval of the measuring instrument 11 is large, it may be necessary to detect leakage that occurs in a place away from the place where the measuring instrument 11 is attached.
- the leakage vibration that propagates the pipe and the fluid flowing in the pipe attenuates according to the distance from the point where the leakage occurs. For this reason, the magnitude of the leakage vibration generated at a location distant from the measuring instrument 11 may be reduced when reaching the measuring instrument 11.
- ⁇ Misdetection includes a case where leakage cannot be detected due to a small vibration detected by the measuring instrument 11 even though leakage or the like has occurred in the pipe 1.
- a case in which noise detected by the measuring instrument 11 is detected as leakage even though no leakage has occurred in the pipe 1 may be included as a false detection.
- a case where the error of the position specified as the position where the leakage has occurred exceeds a certain level may be included in the false detection.
- FIG. 9 (2) is a conceptual diagram showing the relationship between the installation interval of the measuring instrument 11 and the detection accuracy by the diagnostic apparatus 10. As the installation interval of the measuring instrument 11 increases, the detection accuracy by the diagnostic device tends to decrease. As a result, from the viewpoint of diagnostic detection accuracy, it is assumed that the increase in the installation interval of the measuring instrument 11 tends to reduce the number of leaks detected by the diagnostic device 10.
- the detection accuracy is the presence or absence of leakage by the diagnostic device 10 and the location where the leakage has occurred (that is, the location where the leakage hole 3 has occurred) out of the leakage of the pipe 1 that can be detected by the diagnostic device 10. Indicates the ratio of leaks that are properly diagnosed.
- the detection accuracy generally varies depending on the distance from the measuring instrument 11 to the position where leakage has occurred in the pipe 1.
- the number of leaks detected by the diagnostic device 10 among the leaks generated in the pipe 1 is determined according to the coverage and detection accuracy.
- the ratio of leaks detected by the diagnostic device 10 (hereinafter referred to as “detection rate”) among leaks occurring in the pipe 1 is assumed to be in line with the product of coverage and detection accuracy.
- the approximate number of leaks in the entire pipe 1 that is assumed to be detected by the diagnostic device 10 is determined based on the detection rate and the expected number of leaks that occur in the entire pipe 1. That is, the approximate number of leaks in the entire pipe 1 is assumed to roughly correspond to the product of the detection rate and the expected number of leaks occurring in the entire pipe 1.
- the relationship between the installation interval of the measuring instrument 11 and the approximate number of leaks detected by the diagnostic device 10 in the entire pipe 1 is expressed, for example, as shown in FIG.
- the measurement coverage tends to increase as described above.
- the detection accuracy tends to decrease, but it is assumed that sufficient detection accuracy is maintained up to a certain installation interval. That is, it is assumed that the approximate number of leaks detected tends to increase up to a certain installation interval due to the increase in the installation interval of the measuring instrument 11.
- the detection rate generally has a maximum at a specific installation interval of the measuring instrument 11 and tends to be low at the installation intervals before and after that.
- the relationship between the approximate number of leaks assumed to be detected by the diagnostic device 10 in the entire pipe 1 and the installation interval of the measuring instrument 11 is expressed, for example, as (3) in FIG.
- the cost reduced by the diagnosis by the diagnosis device 10 changes according to the installation interval.
- the relationship between the cost reduced by the diagnosis by the diagnostic device 10 and the installation interval of the measuring instrument 11 is similar to the relationship between the detection rate and the installation interval of the measuring instrument 11 described above.
- the cost reduced by the deterioration diagnosis by the diagnostic device 10 is obtained based on the product of the approximate number of leaks detected by the diagnostic device 10 and the cost reduced by repairing the leak hole 3 that caused the leak. It is done.
- the approximate number of leaks detected by the diagnostic device 10 is determined according to the installation interval of the measuring instrument 11 as described above.
- the expense reduced by repairing one of the leak holes 3 includes, for example, expenses required for fresh water generation or water distribution related to the amount of water whose loss is suppressed by repairing the leak.
- the cost reduced by repairing one of the leak holes 3 may include a cost that can be reduced by preventing the rupture of the pipe 1, which is also called a burst, in advance. These costs are calculated on the basis of, for example, actual results when leakage from the past piping 1 has occurred.
- the cost reduced by the diagnosis by the diagnostic device 10 is represented as a graph shown in FIG.
- the horizontal axis represents the installation interval of the measuring instruments
- the vertical axis represents the cost reduced by the diagnosis by the diagnostic device 10.
- the shape of the graph shown in FIG. 10 is substantially similar to that shown in FIG.
- the operation cost output unit 230 calculates the cost reduced by the diagnosis by the diagnosis device 10 when the operation cost is output.
- the above-described detection rate is used.
- the operation cost output unit 230 first obtains the coverage and detection accuracy.
- the degree of coverage is obtained based on the total length of the pipe 1 and the number of measuring instruments 11 attached to the pipe 1.
- the operation cost output unit 230 obtains, as the coverage, the ratio of the product of the number of measuring instruments 11 attached to the pipe 1 and the installation interval of the measuring instruments 11 with respect to the total extension of the pipe 1. That is, the degree of coverage represents an extension in which leakage vibration can be detected by the measuring instrument 11 out of the total extension of the pipe 1.
- the operation cost output unit 230 obtains the coverage by changing the installation interval of the measuring instrument 11.
- the operation cost output unit 230 may obtain the coverage in a range that can be detected by the measuring instrument 11.
- the operation cost output unit 230 obtains the degree of coverage such that the installation interval of the measuring instrument 11 is within a detectable distance.
- the operation cost output unit 230 may consider the type of the pipe 1 to which the measuring instrument 11 is attached, etc., when obtaining the degree of coverage.
- the operation cost output unit 230 obtains the detection accuracy based on, for example, information related to the characteristics of the pipe 1 including the attenuation characteristic ⁇ , a detectable distance or a parameter related to the detectable distance.
- the operation cost output unit 230 may obtain the detection accuracy based on the results of the same type of piping as the target piping 1.
- the operation cost output unit 230 obtains the detection accuracy based on the actual values related to the leakage and erroneous detection situations actually detected in the pipe 1 and the pipe of the same type as the pipe 1.
- the actual value is stored in, for example, the storage unit 250 described later.
- the operation cost output unit 230 may obtain the detection accuracy by appropriately combining these methods.
- information stored in advance in the storage unit 250 shown in FIG. 8 or the like is appropriately used as information such as the above-described attenuation characteristic ⁇ , detectable distance, parameters related to the detectable distance, actual values, and the like.
- information related to the detection accuracy is stored in the storage unit 250 in a table format according to the type of pipe 1, the detection distance, and the like.
- the operation cost output unit 230 obtains the detection accuracy by referring to a necessary part of the tabular information stored in the storage unit 250 according to the target pipe 1. Further, the operation cost output unit 230 may acquire these pieces of information as necessary via a communication network or the like.
- the storage unit 250 is configured in the same manner as the storage unit 150 in the first embodiment.
- the operation cost output unit 230 uses, for example, the product of the coverage level and the detection accuracy as the detection rate.
- the detection rate is obtained, the approximate number of leaks detected by the diagnostic device 10 is obtained based on the detection rate and the number of leaks that can actually occur in the pipe 1.
- the operation cost output unit 230 takes, for example, the product of the detection rate and the approximate number of leaks that can actually occur in the pipe 1 as the approximate number of leaks detected by the diagnostic device 10. Note that the approximate number of leaks that can actually occur in the pipe 1 is determined in advance based on, for example, the performance of the same type of pipe as the target pipe 1 or the aging of the target pipe 1.
- the operation cost output unit 230 obtains an approximate number of leaks that can actually occur in the pipe 1 using an arbitrary model or the like based on conditions such as the type and age of the pipe 1 and the location where the pipe 1 is embedded. May be.
- the operation cost output unit 230 may obtain the coverage level, the detection accuracy, and the detection rate using an arbitrary model that indicates the relationship between the elements related to these.
- the cost reduced by the deterioration diagnosis by the diagnostic device 10 is based on the approximate number of leaks and the cost reduced by repairing one of the leak holes 3 that caused the leak. Desired.
- the operation cost output unit 230 calculates the product of the approximate number of leaks that can actually occur in the pipe 1 and the cost that is reduced by repairing one of the leak holes 3 that caused the leak. The cost is reduced by the deterioration diagnosis by
- the operation cost output unit 230 When the cost to be reduced by performing the deterioration diagnosis by the diagnostic device 10 is obtained, the operation cost output unit 230 outputs the operation cost.
- the operation cost output unit 230 calculates the operation cost based on the diagnosis cost obtained by the output unit 120 and the cost reduced by the deterioration diagnosis performed by the diagnosis device 10. For example, the operation cost output unit 230 sets the difference between the diagnosis cost obtained by the output unit 120 and the cost reduced by performing the deterioration diagnosis by the above-described diagnosis device 10 as the operation cost.
- the degree of contribution of the diagnosis cost and the cost reduced by performing the deterioration diagnosis by the diagnosis device 10 may be different from the operation cost. Therefore, when the difference between the diagnosis cost and the cost reduced by performing the deterioration diagnosis by the diagnosis device 10 is set as the operation cost, the operation cost output unit 230 obtains the difference by assigning a coefficient to each. May be.
- the detection performance specifying unit 110 specifies the measurement time required for leak detection (step S201). Subsequently, the output unit 120 outputs a diagnostic cost based on the measurement time specified in step S201 (step S202). The operations in steps S201 and S202 are performed in the same manner as the operations in steps S101 and S102 of the diagnostic cost output apparatus 100 in the first embodiment.
- the operation cost output unit 230 calculates the cost reduced by the deterioration diagnosis of the pipe 1 such as leakage detection by the diagnostic device 10 (step S203).
- the operation cost output unit 230 outputs the operation cost based on the diagnosis cost obtained in step S202 and the cost reduced due to the deterioration diagnosis of the pipe 1 obtained in step S203 ( Step S204).
- the operation cost output unit 230 obtains the cost reduced by the deterioration diagnosis of the pipe 1 such as leakage detection by the diagnostic device 10. Then, the operation cost output unit 230 outputs the operation cost based on the cost reduced by the deterioration diagnosis of the pipe 1 by the diagnostic device 10 and the diagnosis cost obtained by the output unit 120. That is, the diagnosis cost output device 200 outputs the operation cost considering not only the diagnosis cost but also the cost required for the operation of the pipe 1 when the deterioration diagnosis of the pipe 1 such as leakage detection using the diagnosis device 10 is performed. To do.
- the operation cost output by the diagnostic cost output device 200 in the present embodiment is not limited to the diagnostic cost, but is a cost that takes into account the cost reduced by the diagnostic diagnosis of the pipe 1 by the diagnostic device 10. That is, by using the diagnostic cost output device 200 according to the present embodiment, it is possible to install the measuring instrument 11 at an installation interval in which the operation cost is reduced in consideration of the cost reduced by the deterioration diagnosis of the pipe 1. It becomes.
- FIG. 12 is a diagram showing a diagnostic cost calculation apparatus according to the third embodiment of the present invention.
- the diagnostic cost output device 300 according to the third embodiment of the present invention includes a detection performance specifying unit 110, an output unit 120, and a display control unit 340.
- the detection performance specifying unit 110 and the output unit 120 are the same elements as those included in the diagnostic cost output apparatus 100 in the first embodiment described above. That is, the diagnostic cost output device 300 shown in FIG. 13 is different from the diagnostic cost output device 100 in the first embodiment described above in that it further includes a display control unit 340.
- the display control unit 340 controls the display of diagnostic costs.
- the display control unit 340 may control display of information related to information acquisition necessary for outputting measurement conditions and other diagnostic costs.
- the diagnostic cost output device 300 may have the configuration shown in FIG. As illustrated in FIG. 13, the diagnostic cost output device 301 according to the third exemplary embodiment of the present invention includes a detection performance specifying unit 110, an output unit 120, an operation cost output unit 230, and a display control unit 340.
- the detection performance specifying unit 110 and the output unit 120 are the same elements as those included in the diagnostic cost output apparatus 100 in the first embodiment described above.
- the operation cost output unit 230 is the same element as the element included in the diagnostic cost output apparatus 200 in the second embodiment described above. That is, the diagnostic cost output device 301 shown in FIG. 13 is different from the diagnostic cost output device 200 in the second embodiment described above in that it further includes a display control unit 340.
- the display control unit 340 further controls the display of the operation cost in addition to the control described above.
- the display control unit 340 may control display of information related to acquisition of information necessary for outputting operation costs.
- the display control unit 340 controls at least the display of the diagnostic cost as described above. More specifically, the display control unit 340 controls to display the diagnosis cost, the operation cost, and the like output by each component of the diagnosis cost output device 300. In this case, the display control unit 340 controls, for example, generation of a screen indicating diagnosis cost, operation cost, and the like and display of the screen on the display device.
- the display control unit 340 controls to display the diagnosis cost, the operation cost, etc.
- the display control unit 340 displays the diagnosis cost, the operation cost, etc. for a specific installation interval of the measuring instrument 11.
- the display control unit 340 may perform control so as to display a diagnosis cost, an operation cost, and the like regarding each of a plurality of installation intervals of the measuring instrument 11.
- the display control unit 340 may perform control so that diagnosis costs, operation costs, and the like are displayed in a graph format. For example, the display control unit 340 may perform control so as to display a graph relating to the diagnostic cost shown in FIG. The display control unit 340 may perform control so as to display a graph relating to operation costs.
- the display control unit 340 may further control to display information used when outputting the diagnosis cost and the operation cost.
- the information used when outputting the diagnosis cost includes, for example, the cost required for installation of the measuring instrument 11 and the cost required for leakage detection using the measuring instrument 11. Moreover, the information used when calculating
- the information used when outputting the operation cost includes, for example, a cost reduced by performing a deterioration diagnosis such as leakage detection by the diagnostic device 10.
- the cost reduced by performing the deterioration diagnosis by the diagnostic device 10 may be expressed in the form of a graph as shown in FIG.
- information that is required when the cost to be reduced by performing the deterioration diagnosis by the diagnostic device 10 may be included in the information that is used when the operation cost is output.
- information on the measurement coverage or detection accuracy may be included in the information used when outputting the operation cost.
- Such information may be expressed in the form of a graph as shown in FIG.
- the display control unit 340 may perform control so as to display a screen for acquiring information necessary for outputting diagnosis costs and the like. More specifically, the display control unit 340 controls generation of a screen for acquiring information necessary for outputting, for example, diagnosis cost, and display of the screen on the display device.
- Information necessary for outputting diagnosis costs and the like includes, for example, information for designating measurement conditions and the like, but is not particularly limited. For example, information that specifies the installation interval of the measuring instrument 11 may be included in information that is necessary when outputting diagnosis costs or the like.
- Information acquired via a screen controlled to be displayed by the display control unit 340 is stored in the storage unit 150 or the like, for example.
- each component of the diagnostic cost output device 300 further refers to necessary information from the storage unit 150 or the like based on the acquired information, Output operational costs.
- a general display is assumed as the display device.
- the type of the display device is not particularly limited as long as the information included in the screen described above can be displayed.
- the display device may be a display device included in another computer, a smartphone, a tablet, or the like connected via a communication network or the like.
- FIG. 14 is an example of a screen controlled to be displayed on a display device or the like by the display control unit 340.
- information for acquiring the measurement conditions described above is included on the left side of the figure.
- “Pipe diameter” is the pipe diameter
- “Type” is the pipe type
- “Cost per unit time” is the cost per unit time required for pipe 1 degradation diagnosis such as leakage detection. Represents. These are represented in a pull-down format so as to be selected by the user of the diagnostic cost output apparatus 300. By outputting such a screen by the display control unit 340, the above-described information is acquired.
- the diagnostic cost corresponding to the installation interval of the measuring instrument 11 is represented in the form of a graph.
- the “Breakdown” column a breakdown of diagnostic costs for a specific installation interval of the measuring instrument 11 is shown.
- Measurement device installation cost represents the cost required for installation of the measurement device 11.
- the “measurement cost” represents a cost necessary for performing a deterioration diagnosis of the pipe 1 using the measuring instrument 11.
- the diagnostic cost output device 300 and the like in this embodiment operate according to the flowchart shown in FIG. For example, prior to the operation of step S101 or S201, the display control unit 340 controls to display a screen for acquiring information necessary for outputting diagnosis costs and the like. In addition, the display control unit 340 controls to display the output diagnostic cost and operation cost after the operation of step S102 or S204.
- the display control unit 340 controls to display the diagnostic cost, the operation cost, and the like on the display device.
- the display control unit 340 controls to display a screen for acquiring information necessary for outputting diagnosis costs and the like as necessary. By doing so, it becomes easy for a user such as the diagnostic cost output device 300 to grasp the diagnostic cost and the operation cost, specify the measurement conditions, and the like.
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Abstract
Description
・ROM(Read Only Memory)502
・RAM(Random Access Memory)503
・RAM503にロードされるプログラム504
・プログラム504を格納する記憶装置505
・記録媒体506の読み書きを行うドライブ装置507
・通信ネットワーク509と接続する通信インターフェース508
・データの入出力を行う入出力インターフェース510
・各構成要素を接続するバス511
各実施形態における各装置の各構成要素は、これらの機能を実現するプログラム504をCPU501が取得して実行することで実現される。各装置の各構成要素の機能を実現するプログラム504は、例えば、予め記憶装置505やRAM503に格納されており、必要に応じてCPU501が読み出す。なお、プログラム504は、通信ネットワーク509を介してCPU501に供給されてもよいし、予め記録媒体506に格納されており、ドライブ装置507が当該プログラムを読み出してCPU501に供給してもよい。
まず、本発明の第1の実施形態について説明する。図1は、本発明の第1の実施形態における診断コスト算出装置を示す図である。
次に、本発明の第2の実施形態について説明する。図8は、本発明の第2の実施形態における診断コスト算出装置を示す図である。図8に示すように、本発明の第2の実施形態における診断コスト出力装置200は、検知性能特定部110と、出力部120と、運用コスト出力部230とを備える。
次に、本発明の第3の実施形態について説明する。図12は、本発明の第3の実施形態における診断コスト算出装置を示す図である。図12に示すように、本発明の第3の実施形態における診断コスト出力装置300は、検知性能特定部110と、出力部120と、表示制御部340とを備える。検知性能特定部110及び出力部120は、上述した第1の実施形態における診断コスト出力装置100に含まれる要素と同様の要素である。すなわち、図13に示す診断コスト出力装置300は、表示制御部340を更に備える点が上述した第1の実施形態における診断コスト出力装置100と異なる。
2 弁栓
3 漏洩孔
10 診断装置
11 計測器
100、200、300、301 診断コスト出力装置
110 検知性能特定部
120 出力部
230 運用コスト出力部
340 表示制御部
150、250 記憶部
Claims (10)
- 配管の振動伝搬特性に影響を及ぼす情報に基づいて、センサの設置間隔に対する漏洩検知に必要な計測時間を特定する検知性能特定手段と、
前記センサの設置コストと前記計測時間での漏洩検知により発生する計測コストとに基づいて、前記設置間隔に対する診断コストを出力する出力手段と、
を備える診断コスト出力装置。 - 前記出力手段は、前記計測時間と、前記漏洩検知に必要な単位時間あたりの費用とに基づいて、前記計測コストを求める、請求項1に記載の診断コスト出力装置。
- 前記出力手段は、前記設置間隔に対する前記設置コストを求める、請求項1又は2に記載の診断コスト出力装置。
- 前記配管の振動伝搬特性に影響を及ぼす情報は、前記漏洩検知の対象となる配管の情報を含む、請求項1から3のいずれか一項に記載の診断コスト出力装置。
- 前記診断コストと、前記漏洩検知により削減されるコストとに基づいて、前記設置間隔に対する運用コストを出力する運用コスト出力手段を備える、請求項1から4のいずれか一項に記載の診断コスト出力装置。
- 前記運用コスト出力手段は、漏洩の概数と、前記漏洩の修繕によって削減される費用とに基づいて前記運用コストを特定する、請求項5に記載の診断コスト出力装置。
- 前記運用コスト出力手段は、前記漏洩検知の網羅度と、前記漏洩検知の検知精度とに基づいて、前記漏洩検知により検知される漏洩の概数を特定する、請求項6に記載の診断コスト出力装置。
- 前記診断コストを表示させる表示制御手段を備える、請求項1から7のいずれか一項に記載の診断コスト出力装置。
- 配管の振動伝搬特性に影響を及ぼす情報に基づいて、センサの設置間隔に対する漏洩検知に必要な計測時間を特定し、
前記センサの設置コストと前記計測時間での漏洩検知により発生する計測コストとに基づいて、前記設置間隔に対する診断コストを出力する
診断コスト出力方法。 - コンピュータに、
配管の振動伝搬特性に影響を及ぼす情報に基づいて、センサの設置間隔に対する漏洩検知に必要な計測時間を特定する処理と、
前記センサの設置コストと、前記計測時間での前記漏洩検知により発生するコストとに基づいて、前記設置間隔に対する診断コストを出力する処理と、を実行させるプログラムを格納したコンピュータ読み取り可能記録媒体。
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