TW201738435A - Display control device, method of displaying safety factor, and program recording medium - Google Patents

Abstract

The reliability of evacuation behavior is increased for users prepared for a landslide disaster. A display control device is provided with a first display control unit for displaying on a display unit the change in the safety factor for a given site using the actual status value and predicted value, and a second display control unit for displaying on the display unit the predicted time at which the safety factor at the site specified on the basis of the predicted value will fall below a designated threshold value.

Description

Display control device, display method of security rate, and computer program product

The present invention relates to the display of the safety rate of the bevel.

In the refuge of earth-rock disasters, it is envisaged to take refuge from a location where a landslide may occur to a safer place. However, earth-rock disasters such as the collapse of a slope have the possibility of occurring in a limited area. Thus, for example, in the case of evacuation from a certain location to another location. There is a possibility that a soil flow disaster occurs at a place on the way to the evacuation route. As a result of this earth-rock disaster, when the road becomes inaccessible, it is necessary to have an evacuation action beyond the envisaged time, or to isolate and evacuate itself is not feasible. Therefore, in the evacuation of earth-rock disasters, the prediction and evaluation of earth-rock disasters in the entire evacuation route are important to users.

As a technique related to the prediction of the earth-rock flow disaster, there are the techniques described in Patent Documents 1 to 3. For example, Patent Document 1 describes a system that supports prediction of earth-rock flow disasters. Patent Document 1 describes a technique for calculating the degree of danger of each region based on the measured soil rainfall index of the observation point.

One of the indicators used to analyze the stability of the slope (stability analysis of the slope) to indicate the stability of the slope is the safety of the slope. The safety ratio of the slope is simply the ratio of the sliding force of the slope (the force to be slid) to its resistance. The safety ratio of the slope is lower than 1, that is, the sliding force exceeds the resistance. The state of force indicates that the slope is unstable. Further, the safety factor of the slope can be calculated by various calculation methods (stability analysis mathematical formula) such as the Fellenius method and the Yanbu method.

[Prior patent documents] [Patent Literature]

[Patent Document 1] JP-A-2011-075386

[Patent Document 2] JP-A-2008-121185

[Patent Document 3] Patent No. 5731700

The technique described in Patent Document 1 displays the degree of danger in time series only for each region. Therefore, the prediction of the disaster itself requires the person to observe the information displayed on the risk level, and to rely on the individual's experience or subjective dependence. In other words, in the technique described in Patent Document 1, it is impossible to obtain a certain prediction result and evaluation for the earth-rock flow disaster.

One of the objects exemplified by the present invention is to provide a technique for solving the above-mentioned problem that the earthwork flow disaster cannot obtain a certain prediction result and evaluation, and to make the evacuation action of the user who is prepared for the earth-rock disaster become more certain.

An apparatus according to an aspect of the present invention includes: a first display control means for causing a display means to display a change in a safety rate of a slope of a certain point using a live value and a predicted value; and a second display control means for causing the display means Displayed at the root The safety rate at the location specified by the predicted value is the predicted time below the predetermined threshold.

A method according to another aspect of the present invention is to display a change in a safety rate of a slope at a certain point on a display means using a live value and a predicted value; and display a safety rate at the point specified by the predicted value as a predetermined The predicted time below the limit.

A computer program product according to another aspect of the present invention causes the computer to perform the following steps: a display step of using a live value and a predicted value to cause a display means to display a change in the security rate of a slope of a certain location; and a display step The display means displays the predicted time at which the security rate at the location specified by the predicted value is equal to or less than a predetermined threshold.

According to the present invention, the evacuation action of the user who is prepared to prevent the earth-rock disaster can be made more realistic.

110‧‧‧Display control device

111‧‧‧1st display control unit

112‧‧‧2nd display control unit

120‧‧‧ display device

210, 220‧‧‧Information processing device

211‧‧‧ Receiving Department

212‧‧‧ Calculation Department

213, 221‧‧ Department of Communications

222‧‧‧Display Control Department

223‧‧‧Display Department

224‧‧‧UI Department

400‧‧‧ computer equipment

Fig. 1 is a block diagram showing an example of a configuration of a display control device according to a first embodiment of the present invention.

Fig. 2 is a view showing an example of display of information on the display device according to the first embodiment of the present invention.

Fig. 3 is a view showing an example of display of the difference in information between the display devices according to the first embodiment of the present invention.

Fig. 4 is a block diagram showing an example of a configuration of a display system according to a second embodiment of the present invention.

Fig. 5 is a sequence diagram showing an example of the operation of the display system according to the second embodiment of the present invention.

Fig. 6 is a view showing an example of display of information by the information processing device according to the second embodiment of the present invention.

Fig. 7 is a view showing an example of display of information by the information processing device according to the second embodiment of the present invention.

Fig. 8 is a view showing an example of display of information by the information processing device according to the first modification of the present invention.

FIG. 9 is a view showing an example of display of information by the information processing device according to the second modification of the present invention.

Fig. 10 is a block diagram showing an example of a hardware configuration of a computer device according to an eighth modification of the present invention.

[First Embodiment]

Fig. 1 is a block diagram showing an example of a configuration of a display control device according to a first embodiment of the present invention. The display control device 110 is a computer device that controls display of information by the display device 120. The display device 120 is a dedicated or general-purpose display device that displays information (security rate, etc.) to be described later, and is, for example, a liquid crystal display. The display control device 110 may be connected to the display device 120 by either wired or wireless, or may be integrally formed with the display device 120.

The display control device 110 and the display device 120 are used, for example, in residents of areas where earth-rock disasters may occur. Alternatively, the display control device 110 and the display device 120 may be used in an organization (public agency, etc.) that issues warning information on earth-rock flow disasters.

The display control device 110 includes a first display control unit 111 and a second display control unit 112. Both the first display control unit 111 and the second display control unit 112 control the display of the information by the display device 120. However, the first display control unit 111 and the second display control unit 112 differ in the information to be controlled. Further, the control displayed here refers to, for example, supply of information necessary for display of information to the display device 120.

The first display control unit 111 controls the display of the change in the security rate at at least one or more locations. The first display control unit 111 uses the live value and the preset value to display the time change of the security rate at the predetermined location using the display device 120. The display form of the first display control unit 111 for the security rate is, for example, a tabular form or a graphic form. Further, the first display control unit 111 may display a map including the plurality of locations when a change in the security rate is displayed for a plurality of locations, and display a change in the security rate together with the map.

Here, the live value means a value actually calculated from the actually measured value of the parameter required for the calculation of the safety rate. That is, the live value referred to herein represents the past or present security rate. On the other hand, the predicted value means the value predicted at a certain point in time (at that point in time). In the present embodiment, the live value and the predicted value of the safety rate are supplied as external devices (not shown). The calculation formula of the safety rate (the mathematical formula of the stability analysis of the slope) is not limited to a specific mathematical expression.

The second display control unit 112 controls the display of the predicted time when the security rate is equal to or less than a predetermined threshold. The threshold value referred to here is typically "1.0", but is not necessarily limited to this. Further, the predicted time may be a time when the safety rate is equal to or less than a predetermined threshold, or may be a time until the safety rate is equal to or less than a predetermined threshold. The forecast time is, for example, a pre-safety rate The measurement is specific.

Fig. 2 is a view showing an example of display of information on the display device 120 according to the first embodiment of the present invention. In this example, the display device 120 graphically displays the change in the security rate of a particular location in time series. This graph uses the vertical axis as the safety factor and the horizontal axis as the time 昀 graphic. Further, in Fig. 2, the time t indicates the current time (i.e., the time at which the time point of the figure is displayed). The display control device 110 supplies image data indicating the illustrated graphic to the display device 120.

In Fig. 2, the safety rate before time t is the live value. On the other hand, the safety rate before time t is a predicted value. The display device 120 displays the live value and the predicted value as distinguishable by the user. In the example of Fig. 2, the display device 120 displays the live values in solid lines and displays the predicted values in broken lines, thereby making it possible to distinguish between each other. In addition, the live value and the predicted value may be distinguished according to the color, thickness, and the like of the line.

Further, the display device 120 displays the time t1 at which the predicted value of the security rate is a predetermined value (here, "1.0"). Alternatively, the display device 120 may display the difference between the time t and the time t1 instead of the time t1 itself, or together with the time t1, for example, "2 hours".

Fig. 3 is a view showing an example of display of the difference in information between the display device 120 according to the first embodiment of the present invention. In this example, display device 120 displays the change in the security rate at a plurality of locations A, B, and C. The display device 120 displays the numerical value of the safety rate every 30 minutes of each place in time series. Here, the current time is taken as 10:00 (1000). The display device 120 is not distinguished here, but the value may be displayed differently according to the live value or the predicted value. Appearance (color, font, size, etc.).

Moreover, the display device 120 displays the time at which the predicted value of the safety rate of each location becomes a predetermined value (here, "1.0"). Further, the display device 120 displays the character color and the background color in the column below the predetermined value as opposed to the other values.

As described above, according to the display control device 110 of the present embodiment, it is possible to display not only the change from the past to the future, but also the predicted time when the display safety rate is equal to or less than the predetermined threshold. That is, by using the safety rate of the slope, a certain prediction result and evaluation regarding the earth-rock flow disaster can be obtained. Therefore, the user is predicting the possibility of a soil-rock disaster, and can prepare an evacuation action.

In the case of a disaster, there is a tendency to be a victim of a person who is in a state of refuge (a person who is in need of care, a person with a disability, etc.). For example, the number of deaths of elderly people over 65 years old in the total number of deaths of the victims in the 2011 East Japan Earthquake, according to the "Guidelines for the Refuge Action Support for Refuge Actions" issued by the Executive Yuan. 60%. Moreover, the mortality rate of the disabled is about twice the mortality rate of the affected residents as a whole. In addition, there are cases where the supporters of the elderly and the disabled become victims.

It is important to ensure sufficient time for evacuation operations such as supporters (persons in need of support) and their supporters. Therefore, especially for those who need supporters and supporters, the information on when the disaster may occur is more important than the information that is just a disaster. According to the display control device 110 of the present embodiment, it is possible to intuitively display the amount of time in which the state of the earth-rock disaster is likely to become high when the safety rate is "1.0". Margin. Thereby, the user including the above-mentioned supporter or supporter can easily perform an appropriate evacuation action with a plan.

Further, according to the display control device 110, the live value and the predicted value of the safety rate can be displayed to be distinguishable from each other. Thereby, it is possible to easily distinguish the value indicating the actual condition of the observation point from the value which is more uncertain than the value, and it is possible to make the preparation for the evacuation action more compact.

[Second Embodiment]

Fig. 4 is a block diagram showing an example of a configuration of a display system according to a second embodiment of the present invention. The display system 200 is provided with information processing devices 210 and 220. The information processing device 210 is typically a server device that acts as an information processing device 220 that is a client device. On the other hand, the information processing device 220 is, for example, a personal computer or a smart phone. However, the information processing apparatuses 210 and 220 are not limited to have a specific configuration as long as they have a function to be described later.

The information processing device 210 is a computer device for calculating a live value and a predicted value of the safety rate. The information processing device 210 includes a receiving unit 211, a calculating unit 212, and a communication unit 213. On the other hand, the information processing device 220 is a computer device for displaying a security rate or the like calculated based on the calculation by the information processing device 210. The information processing device 220 includes a communication unit 221, a display control unit 222, a display unit 223, and a UI (User Interface) unit 224.

The receiving unit 211 receives the data necessary for the calculation of the safety rate, and the receiving unit 211 receives the measurement data indicating the parameter measured at the observation point and the predicted rainfall data indicating the predicted value of the rainfall at the observation point. Here, the observation point means a place to be a display target of the safety rate. The observation points are, for example, each of the locations of the target area by a polygon of a predetermined size (triangle, quadrangle, etc.) (or, accordingly) The representative location of the plurality of locations divided by the method).

At the observation point, a sensor for measuring parameters is set. The parameters referred to here are the variables used in the calculation of the safety rate. The parameter is, for example, a value associated with the state of moisture in the soil. In the following, the parameters of the present embodiment are two of the amount of water in the soil at the observation point and the amount of rain per unit time (30 minutes, one hour, etc.) at the observation point. Further, the water content referred to herein is any one of a volumetric water content (percentage of a mixture of moisture and soil) and a weight moisture content (a percentage of the weight of water to the weight of the soil). The receiving unit 211 receives measurement data indicating the measured value of the water content and the rainfall measured at the observation point. The sensor of the observation point can also transmit the measurement data periodically (for example, every 10 minutes), and can also transmit the measurement data in response to the request from the information processing device 210.

The predicted rainfall data represents the predicted value of rainfall per unit time at the observation point. It is also possible to predict that rainfall data is provided from an external agency or computer of the enterprise. For example, in Japan, the Bureau of Meteorology publishes a forecast of the amount of precipitation in the mesh unit around 1 km (short-time forecast of rainfall).

The calculation unit 212 calculates a live value and a predicted value of the safety factor. The calculation unit 212 calculates a live value of the safety rate of the observation point based on the measured value of the water component of the soil received by the receiving unit 211 and the predicted value of the rainfall amount at the observation point. Further, the calculation unit 212 calculates a predicted value of the safety rate at the observation point based on the predicted value of the rainfall amount at the observation point.

Here, the water content at a certain time point t is taken as m _t and the rain amount is taken as p _t , and m _t can be calculated, for example, from the following equation (1) based on the groove model. Here, c _i is a coefficient that is less than 1 depending on the type of soil. And f(p _t , p _t - ₁ , p _t - ₂ , ....p _t - _k ) is a given multivariate of p _t , p _t - ₁ , p _t - ₂ , ....p _t - _k function. Further, n and k are values that are appropriately determined.

Here, if the influence of the past data can be ignored, the m _t system can be expressed by the following formula (2). Here, the F system corresponds to the water permeability coefficient and varies depending on the type of soil. Further, c is a coefficient indicating the water retention property of the soil. F and c can also be obtained by testing in soil or by using a predetermined database.

[Math 2] m _t =cm _t - ₁ +Fp _t (2)

Equations (1) and (2) can be used as predictive mathematical formulas for water content. In other words, the calculation unit 212 is a case where the predetermined time point after the execution time point of the prediction is t, and the predicted value of the rainfall amount at the time point and the measured value of the water amount before the time point. The amount of water at this point in time can be calculated (ie predicted).

Further, as the water content m _t , a model other than the groove model can also be used. For example, the water component m _t can be applied to a model that contemplates a quadratic function or other function calculated experimentally or empirically, in addition to a linear function.

The calculation unit 212 calculates a predicted value of the safety factor at the time point using the prediction mathematical expression of the water content calculated in this manner and the predicted value of the rainfall amount at the observation point at a predetermined time point where the actual measurement value does not exist. Here, in particular, the point in time at which the measured value does not exist means more than a specific point in time (for example, the timing at which the prediction is performed), that is, the future observed from the point in time.

In addition, the definition of the safety rate mathematical formula (stability analysis mathematical formula) has A plurality of species are not limited to a specific species. In the following description, the calculation unit 212 calculates a predicted value according to the Fellenius method (also referred to as the simple division method, the Swedish method) or the modified Fellenius method.

The safety rate Fs according to the Fellenius method can be expressed, for example, by the following formula (3). Here, c, W, u, and ψ are variables indicating the adhesion, weight, interstitial water pressure, and internal friction angle of the clod. Further, α indicates the inclination angle of the slope. Further, 1 denotes the length of the sliding surface of the slice in which the slope is divided in the vertical direction. For convenience of explanation, the inclination angle α and the length of the sliding surface 1 are regarded as constants here.

Further, the safety factor Fs according to the modified Fellenius method can be expressed, for example, by the following formula (4). Here, b represents the width of the slice. The slice width b is here as a constant.

Here, the adhesion force c, the weight W, the interstitial water pressure u, and the internal friction angle system all vary depending on the amount of moisture in the soil. Therefore, these variables can be expressed as a function of the amount of water. For example, the formula (3) is a function c (m), W (m), u (m), and ψ (m) in which the adhesion force c, the weight W, the gap water pressure u, and the internal friction angle 置换 are respectively replaced by the water component m. When it is expressed by the following formula (5). This type of substitution is equally possible in the formula (4).

In addition, the functions c(m), W(m), u(m), and ψ(m) vary from soil to soil. The functions c(m), W(m), u(m), and ψ(m) may be obtained in advance based on the measured values of the variables and the moisture component, or may be estimated by simulation or the like.

Here, when m of the formula (5) is replaced with m _{t of the} formula (1) or the formula (2), the following formula (6) can be obtained. Therefore, the safety rate Fs can theoretically be calculated from the measured value of the past water content and the predicted value of the past rainfall amount. Moreover, if the water content m _t is predictable, it can be said that the safety rate Fs is also predictable.

As described above, the amount of water in the soil at a certain point in the future is predictable if the amount of water in front of the time point and the predicted amount of rainfall at that point in time are obtained. Therefore, the value that is newly required by the calculation unit 212 when predicting the safety rate is only the predicted value of the rainfall amount at the time point (ie, the future) at which the safety rate is calculated.

The calculation unit 212 calculates a live value and a predicted value of the safety rate for each observation point. The calculation unit 212 may perform calculations on specific observation points designated by the user, and may perform calculations on all of the observation points. The calculation unit 212 supplies the calculated live value and predicted value of the safety factor to the communication unit 213.

The communication units 213 and 221 exchange data with each other. The communication units 213 and 221 exchange data, for example, via the Internet. However, the communication methods of the communication units 213 and 221 are not limited to a specific mode.

The display control unit 222 controls the display of the information by the display unit 223. Show. The display control unit 222 generates video data using the live value and the predicted value of the security rate received by the communication unit 221. In the present embodiment, the display control unit 222 generates video data in response to any of "graphic mode" or "map mode". Graphic mode is a display mode that uses graphics to show the change in security rate. On the other hand, the map mode uses a map to display a display mode in which the security rate changes.

The display unit 223 is configured to display an image of the image data generated by the display control unit 222. This image contains at least information about the safety rate. The display unit 223 is, for example, a liquid crystal display, but the display element or the display method thereof is not particularly limited.

The UI unit 224 accepts the operation of the user. The UI unit 224 is, for example, an input device (or an interface thereof) such as a keyboard or a mouse. The UI unit 224 may include a touch screen provided in a manner corresponding to the display area of the display unit 223. The operation accepted by the UI unit 224 includes an indication of the display security rate or a selection of the display mode.

Fig. 5 is a sequence diagram showing an example of the operation of the display system 200 according to the second embodiment of the present invention. This action is initiated by an operation of the user of the information processing device 220. In this operation, the user can also select a display mode or a place where the security rate is displayed. However, the location where the mode or the security rate is displayed may be determined in advance.

The information processing device 220 receives the user's operation via the UI unit 224 (step S1). When receiving the user's operation, the information processing device 220 requests the information processing device 210 to transmit the security rate via the communication unit 221 (step S2). In this case, it is also possible to include the current (ie, when requested) time, the information identifying the location where the security rate is displayed, and the like.

When the information processing device 210 accepts the request, the borrowing unit 212 calculates the security rate of one or a plurality of places (step S3). The calculation unit 212 calculates a live value of the safety rate based on the measurement data received in advance. Further, the calculation unit 212 calculates a predicted value of the safety rate based on the measured data and the predicted rainfall amount data. The calculation unit 212 calculates a safety factor for a fixed period (for example, from 4 hours to 3 hours) based on the current time.

The information processing device 210 transmits the live value and the predicted value of the security rate to the information processing device 220 via the communication unit 213 (step S4). When the information processing device 220 receives the live value and the predicted value of the security rate, the display control unit 222 generates the data (step S5). The display control unit 222 generates video data indicating the live value and the predicted value of the security rate in accordance with the display form of the display mode. Then, the display control unit 222 supplies the generated image data to the display unit 223. The display unit 223 displays an image corresponding to the image data (step S6).

Fig. 6 and Fig. 7 are views showing examples of display of information by the information processing device 220 according to the second embodiment of the present invention. This display example is an example of a case where the display mode is the map mode. Further, the display system of the information processing device 220 in the case where the display mode is the graphic mode is the same as the display example (see FIG. 2) of the first embodiment described above.

In Fig. 6 and Fig. 7, the P1 to P5 systems show observation points, respectively. It is also possible to indicate that P1 to P5 are designated to use easily identifiable names (place names, etc.). The user may also specify the area or observation point that he or she wants to confirm, and cause the information processing device 220 to display the map. Further, the information processing device 220 may accept the display magnification of the map.

P1~P5 are shown by the color to indicate the safety rate. Figure P1~P5 For example, if the safety rate is 1.5 or more, it is "blue", if the safety rate is 1.3 or more, and if 1.5 is less than "green", if the safety rate is 1.0 or more and less than 1.3 is "yellow", if the safety rate is less than 1.0, In the case of "red", the color changes depending on the safety rate. The information processing device 220 may display a more detailed numerical value of the security rate corresponding to the selected icon when the user selects (touch, overlaps the cursor, etc.) in any of the figures P1 to P5. The observation point security rate corresponding to the selected icon is a prediction time of 1.0 or less.

Further, the time TM is a time corresponding to the security rate displayed by the information processing device 220. For example, the display example of Fig. 6 shows an example of the security rate at a time point of 9:00 on a certain day. Further, the slider SL is a GUI (Graphical User Interface) element for changing the time TM. When the user moves the slider SL to the right (sliding), the information processing device 220 displays a value of the security rate at a time later than the time displayed at that time, and when the user moves the slider SL to the left, the display is performed. The value of the security rate at a time earlier than the time shown at that time. For example, the display example of Fig. 7 is an example in which the user slides the slider SL to the right from the state displayed by the display example of Fig. 6, and displays the security rate at 10:00.

As described above, the display system 200 according to the present embodiment can have the same operational effects as those of the first embodiment. Further, according to the display system 200, the security rate of a plurality of observation points located within a fixed range can be graphically displayed. Thereby, the user not only considers a specific place, but also considers the change of the safety rate in the vicinity of the place, and prepares an evacuation action.

[Modification]

The first embodiment to the second embodiment described above are merely An example of an embodiment of the invention. The embodiment of the present invention is not limited to these embodiments, and for example, the following modifications can be included. Further, the embodiments of the present invention may be combined as appropriate in the embodiments and modifications described in the present specification. For example, the modifications described using the specific embodiments can be applied to other embodiments.

(First Modification)

The information processing device 210 may also calculate an error assumed for the predicted value of the safety rate. In this case, the information processing device 220 may display the calculated error together with the predicted value. The method of calculating this error is as follows, for example.

The calculation unit 212 calculates the error ΔFs of the safety factor based on the following formula (7). Here, Fs(m) is a value indicating a safety rate obtained by substituting the moisture content m at the latest time point into the prediction formula of the safety rate. Further, Fs (m + Δm) is a value indicating a safety factor obtained by substituting the value obtained by adding the water component m and the difference Δm at the latest time point into the prediction formula of the safety rate. Further, ðFs/ðm indicates the rate of change of the safety rate Fs(m) of the water component m at the time point.

Fig. 8 is a view showing an example of display of information (especially error) by the information processing device 220 according to the first modification of the present invention. Further, this display example is the same as the example shown in Fig. 2 except that the predicted value of the safety rate is displayed together with the error. The information processing device 220 not only displays a curve indicating the safety rate Fs, but also displays a subtraction (or addition) error ΔFs from the safety factor Fs (predicted value). The value, which is the curve of Fs-ΔFs (Fs + ΔFs). Further, the information processing device 220 may display a predicted time when the value of Fs-ΔFs becomes 1.0 or less as needed.

Thereby, the user can grasp how much accuracy is used to calculate the predicted value of the safety rate. Further, the user can improve the accuracy of the evacuation action by planning the evacuation action by considering the error calculated from the predicted value of the safety rate.

(Second modification)

The information processing device 210 may transmit information (the water content m in the second embodiment) that is the basis of the calculation of the safety rate to the information processing device 220. In this case, the information processing device 220 may also display the transmitted information together with the security rate.

FIG. 9 is a view showing an example of display of information (especially moisture content) by the information processing device 220 according to the second modification of the present invention. Further, this display example is the same as the example shown in Fig. 2 except that the measured value of the moisture content is displayed. Further, in general, the safety rate of the slope tends to decrease as the amount of moisture of the soil constituting the slope increases.

(Third Modification)

The information processing device 210 may also calculate an observation point, that is, a security rate at a location other than the location where the sensor is located. For example, the information processing device 210 may calculate the security rate of the location around the observation point from the security rate borrowing value of the observation point. In this case, the information processing device 220 may be displayed such that, for example, a line having the same point at which the predicted value of the connection safety rate is equal to or lower than the predetermined value is superimposed on the map.

(Fourth Modification)

The information processing device 220 can also output in a manner other than display. Information such as safety rate. For example, the information processing device 220 may also output a security rate or a predicted time by sound.

(Fifth Modification)

The stability analysis mathematical formula is not limited to the mathematical formula of a particular method. As a stable analysis mathematical expression, in addition to the Fellenius method or the modified Fellenius method, a Bishop method, a Yanbu method, or the like can be applied. These stable analytical mathematical formulas may also describe the required variables as a function of the water content.

(Sixth Modification)

The index indicating the safety of the slope is not limited to the safety rate. Further, the numerical value indicating the moisture state of the slope is not limited to the moisture content. For example, the moisture component is related to the decay rate of the vibration waveform in the soil. Therefore, if the correlation coefficient between the water component and the attenuation rate can be obtained, the stability analysis mathematical expression can also be described as a function of the attenuation rate.

(Seventh Modification)

In the second embodiment, the functions described as functions of the information processing device 220 can be realized by the information processing device 210. For example, the information processing device 210 may be configured to execute the generation of the image data (step S5), and transmit the image data to the information processing device 220. In this case, the information processing device 220 only needs to receive the image data and display an image corresponding to the received image data. Moreover, the information processing devices 210 and 220 can also be implemented by a single device.

(eighth modification)

The specific hardware configuration of the display control device 100 and the information processing devices 210 and 220 described above may have various changes, and is not limited to a specific one. Composition. For example, the control device 100, the information processing devices 210, and 220 may be displayed as constituent elements for realizing a part thereof using software.

Fig. 10 is a block diagram showing an example of a hardware configuration of a computer device 400 according to an eighth modification of the present invention. The computer device 400 is an example of a device for realizing the above-described display control device 100 and information processing devices 210 and 220. The computer device 400 includes a CPU (Central Processing Unit) 401, a ROM (Read Only Memory) 402, a RAM (Random Access Memory) 403, a memory device 404, a drive device 405, a communication interface 406, and an input/output interface 407. The display control device 100 and the information processing devices 210 and 220 can be realized by the configuration (or a part thereof) shown in FIG.

The CPU 401 executes the program 408 using the RAM 403. Program 408 is also stored in ROM 402. Further, the program 408 can also be recorded on a recording medium 409 such as a flash memory, and can be read by the drive device 405 or transmitted from the external device via the network 410. The communication interface 406 exchanges data with an external device via the network 410. The input/output interface 407 exchanges data with peripheral devices (input devices, output devices, etc.). The communication interface 406 and the input/output interface 407 can function as means for acquiring or outputting data.

Further, each of the first display control unit 111, the second display control unit 112, and the display control unit 222 may be constituted by a single circuit (processor or the like), or may be configured by a combination of a plurality of circuits. The circuitry referred to herein may be either dedicated or general purpose. Further, the first display control unit 111 and the second display control unit 112 may each be configured by a single circuit.

The present invention has been described above by taking the above-described embodiments as a model example. However, the present invention is not limited to the above embodiments. That is, the present invention It is within the scope of the invention to employ various forms that can be understood by those skilled in the art.

Japanese Patent Application No. 2016-007230, filed on Jan.

110‧‧‧Display control device

111‧‧‧1st display control unit

112‧‧‧2nd display control unit

120‧‧‧ display device

Claims (11)

A display control device includes: a first display control means for causing a display means to display a change in a security rate of a slope of a certain location using a live value and a predicted value; and a second display control means for causing the display means to display The safety rate at the location specified by the predicted value is a predicted time below the predetermined threshold. The display control device of claim 1, wherein the first display control means is displayed to distinguish the live value from the predicted value from each other. A display control device according to claim 1 or 2, wherein the first display control means displays an error assumed for the predicted value together with the predicted value. The display control device according to any one of claims 1 to 3, wherein the first display control means displays information which is a basis for calculation of a safety rate. The display control device according to any one of claims 1 to 4, wherein the first display control means is arranged to arrange the live value and the predicted value in time series. The display control device according to any one of claims 1 to 5, wherein the first display control means displays a change in the security rate at the plurality of locations. The display control device according to any one of claims 1 to 6, wherein the second display control means displays the predicted time of the plurality of places. The display control device according to any one of claims 1 to 7, wherein the first display control means makes the safety rate in response to a user's operation The display changes. The display control device according to any one of claims 1 to 8, wherein the first display control means displays a live value and a predicted value of a safety rate based on moisture in the soil at the place The state is calculated from the measured value of the relevant parameter, and the predicted value is calculated based on the measured value and the predicted value of the rainfall at the location. A method for displaying a safety rate is to display a change in a safety rate of a slope at a certain location on a display means using a live value and a predicted value; and display a safety rate at the location specified by the predicted value as a predetermined threshold The forecast time below. A computer program product for causing a computer to perform the following steps: a display step of using a live value and a predicted value to cause a display means to display a change in a security rate of a slope of a certain location; and a display step for causing the display means The predicted time at which the security rate at the location specified by the predicted value is below the predetermined threshold is displayed.