JP2010197154A - Slope monitoring system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a slope monitoring system having a low-cost, simple structure, and capable of acquiring data correlated with the stability of a slope in real time, and effectively monitoring as many slopes as possible in real time without the necessity of an on-site normal power source. <P>SOLUTION: The slope monitoring system 1 includes a sensor unit 2 disposed on a slope S. The sensor unit 2 includes: an inclinometer 12; a soil moisture meter 13; a wireless communication unit 14; and a battery 16 serving as a power source for these. Measurement data measured by the inclinometer 12 and the soil moisture meter 13 is transmitted from the wireless communication unit 14 to a repeater 4 through a relay repeater unit 3 by radio WL. After conversion of the format, the transmitted measurement data is transmitted to a center monitoring device 5 from the repeater 4 through a cellular phone network PN and internet IN and used to monitor the slope S. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a slope monitoring system that monitors, in real time, slopes that may collapse during heavy rain, for example.

  In Japan, it has been pointed out that there are many slope failures during heavy rains and that there are more than tens of thousands of places at risk. On the other hand, most slope failures occur as surface slips on small-scale slopes. Therefore, there is a demand for a slope monitoring system that can be installed on as many slopes as possible with a simple and inexpensive configuration, can effectively monitor the state of the slope in real time, and can easily obtain the information.

  As a conventional slope monitoring system, for example, one disclosed in Patent Document 1 is known. This monitoring device acquires measuring data sent from this measuring device, a measuring device group installed on the slope to be monitored, a data collecting device that collects measurement data measured by these measuring device group A central monitoring device to be analyzed and a client device that can communicate with the central monitoring device are provided.

  The measuring instrument group includes a plurality of displacement meters, inclinometers, groundwater level meters, and rain gauges. The data collection device is installed in a local measurement room near the slope. The data logger collects measurement data from the measuring instrument group, and acquires and manages measurement data from this data logger via a communication cable. It has a measuring computer. The measurement computer can communicate with the central monitoring device via the Internet via a communication line such as a telephone line, and measurement data from the measuring instrument group is transmitted to the central monitoring device via the measurement computer. .

  This central monitoring apparatus has a monitoring server and a monitoring database. The monitoring server uses the measurement data sent from the measurement computer and analyzes the safety factor of the slope in real time using a predetermined analysis program. The monitoring database stores information such as the measurement data and the safety factor obtained by the analysis. To do. The client device is composed of information terminals such as personal computers and mobile phones possessed by registered clients, and can communicate with the central monitoring device via the Internet. Information such as the safety factor obtained by analysis Is transmitted from the monitoring server to the client device as needed. In addition, the monitoring data can be accessed from the client device and the stored measurement data can be read out.

JP 2006-195650 A

  However, in the conventional monitoring system described above, in order to collect and transmit measurement data from the measuring instrument group, a data collection device including a data logger, a measurement computer, and the like must be installed in the field. For this reason, it is necessary to secure a regular power source for driving the data collection device and to set up a measurement room for housing the data collection device at the site, which increases the installation cost. In addition, it is necessary to install a communication cable for connecting the data logger and the measurement computer at the site. As a result, it is practically difficult to use this conventional monitoring system on mountain slopes and many small-scale slopes, and its application range is limited.

  The present invention has been made in order to solve the above-described problems, and in a real-time manner, data correlated with slope stability can be obtained in a simpler and less expensive configuration without requiring a local power source. It is an object of the present invention to provide a slope monitoring system that can be acquired and thereby can effectively monitor slopes in real time for more slopes.

  In order to achieve the above object, a slope monitoring system according to the invention according to claim 1 of the present application is installed on a slope, a sensor that measures data correlated with the stability of the slope, and wirelessly transmits the measured measurement data. A wireless communication device, a sensor unit having a battery that serves as a power source for the sensor and the wireless communication device, and measurement data transmitted from the sensor unit that is installed at a location away from the sensor unit can be transmitted by the first communication means And a monitoring device that collects measurement data transmitted from the relay device via the first communication means and monitors the slope based on the collected measurement data. To do.

  According to this slope monitoring system, the sensor unit installed on the slope has a sensor for measuring data correlated with the stability of the slope, a wireless communication device, and a battery for driving them. Measurement data measured by the sensor is wirelessly transmitted from the wireless communication device to the repeater. This repeater converts the transmitted measurement data into a format that can be transmitted by the first communication means, and then transmits the data to the monitoring device via the first communication means. The monitoring device collects the transmitted measurement data and monitors the slope based on the measurement data.

  As described above, in this monitoring system, the measurement data measured by the sensor is wirelessly transmitted from the site to the repeater by the wireless communication device driven by the battery, and the first communication is performed from the repeater to the monitoring device. Send via means. Therefore, unlike conventional systems, data that correlates with slope stability can be acquired in real time with a simpler and less expensive configuration without installing a regular power supply, measurement room, and communication cable. It is possible to effectively monitor the slope in real time.

  According to a second aspect of the present invention, there is provided the slope monitoring system according to the first aspect, wherein the wireless communication device is installed between the sensor unit and the repeater and wirelessly transfers measurement data transmitted from the sensor unit to the repeater. And a relay relay unit having a battery serving as a power source for the wireless communication device.

  According to this configuration, the relay relay unit installed between the sensor unit and the repeater wirelessly transfers measurement data from the sensor unit to the repeater. Therefore, even when the distance between the site and the repeater is large, measurement data can be obtained simply and inexpensively by relaying with the relay relay unit.

  According to a third aspect of the present invention, in the slope monitoring apparatus according to the second aspect, the sensor unit is composed of a plurality of sensor units, and the relay relay unit receives a plurality of measurement data respectively transmitted from the plurality of sensor units. It transfers to a repeater, It is characterized by the above-mentioned.

  According to this configuration, since the relay relay unit collectively transfers a plurality of measurement data from the plurality of sensor units to the relay, it is possible to further simplify and reduce the cost of the monitoring system.

  According to a fourth aspect of the present invention, in the slope monitoring system according to any one of the first to third aspects, the first communication means is a mobile phone net or the Internet.

  According to this configuration, communication of measurement data from the repeater to the monitoring device can be easily performed using an existing mobile phone network or the Internet.

  The invention according to claim 5 is the slope monitoring system according to any one of claims 1 to 4, wherein the monitoring device has a monitoring database for storing the collected measurement data, and the stored measurement data is the second. It is configured to be readable through communication means.

  According to this configuration, for example, local residents or transportation organizations can easily obtain information on slope stability by reading measurement data stored in the monitoring database of the monitoring device via the second communication means. , It can be used effectively for countermeasures.

  According to a sixth aspect of the present invention, in the slope monitoring system according to the fifth aspect, the second communication means is a mobile phone net or the Internet.

  According to this configuration, the measurement data from the monitoring device can be easily obtained using the existing mobile phone network or the Internet.

  According to a seventh aspect of the present invention, in the slope monitoring system according to any one of the first to sixth aspects, the monitoring device comprises: an evaluation means for evaluating the stability of the slope based on the collected measurement data; It is characterized by having a distribution means for distributing the evaluation result of slope stability by the means to a pre-registered mail address.

  According to this configuration, when the risk of the slope collapse increases, the information is promptly distributed and notified, so that it can be effectively used for countermeasures and damage prevention.

  The invention according to claim 8 is the slope monitoring system according to any one of claims 1 to 7, wherein the sensor unit performs measurement data measurement by the sensor and transmission of the measurement data by the wireless communication device at a predetermined timing. It further has a control device which controls to perform intermittently.

  According to this configuration, measurement data measurement by the sensor and measurement data transmission by the wireless communication device are intermittently performed at a predetermined timing under the control of the control device. When transmitting measurement data by a wireless communication device, particularly large power is consumed. Further, it is not necessary to acquire measurement data at such a short interval at any time when there is no fear of slope collapse. Therefore, the maintenance of the monitoring system is facilitated by effectively saving power and extending battery life while acquiring necessary measurement data by intermittently performing sensor measurement and wireless communication device transmission. be able to.

  The invention according to claim 9 is the slope monitoring system according to any one of claims 1 to 8, wherein the sensor measures an inclinometer for measuring the displacement of the slope and moisture in the soil on the slope. The soil moisture meter is included.

  In the case of surface slip, slope collapse appears as displacement and an increase in water saturation, especially at the heel. According to this configuration, the displacement of the slope by the inclinometer and the amount of moisture in the soil of the slope by the soil moisture meter are measured as measurement data and transmitted to the monitoring device, so monitoring of the slope and evaluation of stability, etc. Can be used effectively.

  According to a tenth aspect of the present invention, in the slope monitoring system according to any one of the first to ninth aspects, the sensor of the sensor unit, the wireless communication device, and the battery are built in the waterproof box.

  According to this configuration, the built-in sensor and the wireless communication device can be protected by the waterproof box. Further, by assembling the sensor unit in advance, installation on the site can be performed more easily.

  According to an eleventh aspect of the present invention, in the slope monitoring system according to any one of the first to tenth aspects, the sensor unit has a memory for storing measurement data measured by the sensor.

  According to this configuration, by collecting the memory periodically or during maintenance of the sensor unit, the measurement data stored therein can be effectively used as data supplementing the measurement data transmitted in real time. Can be useful.

1 is a diagram schematically illustrating a slope monitoring system according to an embodiment of the present invention. FIG. It is a figure which shows typically the installation condition of the several sensor unit to a slope. It is a figure which shows the structure of a sensor unit typically. It is a figure which shows the structure of a relay relay unit typically. It is a figure which shows the example of arrangement | positioning of a relay relay unit. It is a figure which shows the other example of arrangement | positioning of a relay relay unit. It is a figure which shows another example of arrangement | positioning of a relay relay unit.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows the overall configuration of a slope monitoring system 1 according to an embodiment of the present invention. As shown in the figure, the monitoring system 1 includes a plurality of sensor units 2 installed on a slope S to be monitored (see FIG. 2), and these sensor units 2 include a wireless WL and a cellular phone network PN. The relay relay unit 3, the repeater 4, the central monitoring device 5, and the user terminal 6 are sequentially connected via the Internet IN.

  As shown in FIG. 3, each sensor unit 2 includes an inclinometer 12 and a soil moisture meter 13 as sensors, a wireless communication unit 14, a memory 15, a battery 16, and a microcomputer 17. The components other than the soil moisture meter 13 are integrally incorporated in a waterproof box 11 having waterproof and dustproof properties, and the soil moisture meter 13 is embedded in the soil of the slope S near the waterproof box 11. . The sensor unit 2 is fixed and attached to each of a plurality of support columns (not shown) provided at predetermined positions on the slope S via a waterproof box 11.

  The inclinometer 12 is composed of, for example, an inclinometer using MEMS technology, and measures an inclination angle around two axes orthogonal to each other. The accuracy of the inclinometer 12 is 0.0025 degrees, the power consumption is 5 V, 4 mA, and the measurement can be completed within 50 ms after the power is turned on. The measurement data is A / D converted and then input to the microcomputer 17. The inclinometer 12 may be an inexpensive one with lower accuracy and power consumption, or a three-axis type that measures inclination angles about three axes orthogonal to each other.

  The soil moisture meter 13 is, for example, a TDR type that measures the moisture content of soil via a dielectric constant, and the accuracy thereof is ± 3%. The measurement data is A / D converted and then input to the microcomputer 17.

  The wireless communication unit 14 includes a power-saving type unit main body 14a and an antenna 14b, and transmits measurement data output from the microcomputer 17 and subjected to A / D conversion to the relay relay unit 3 by wireless WL. The transmittable distance is nominally about 300 m, and it has been confirmed that it extends up to about 1200 m in a place with a good view.

  The memory 15 is for backup, is configured with a detachable memory such as an SD memory, and stores measurement data output from the microcomputer 17. The battery 16 serves as a power source for the inclinometer 12, the soil moisture meter 13, the wireless communication unit 14, and the microcomputer 17, and is composed of four AA alkaline batteries.

  The microcomputer 17 controls the operation of the entire sensor unit 2 and is constituted by an arbitration consumption current type microcomputer chip. Further, the microcomputer 17 has a sleep (pause) function based on the stored program, and performs measurement by the inclinometer 12 or the like and transmission of measurement data by the wireless communication unit 16 every predetermined time (for example, 1 minute). In addition to the measurement and transmission time, the power consumption is controlled to be substantially zero by maintaining the microcomputer 17 itself, the inclinometer 12, the soil moisture meter 13 and the wireless communication unit 14 in the sleep state.

  As described above, transmission of measurement data by the wireless communication unit 14 with particularly large power consumption is intermittent due to the use of the power saving type as each component of the sensor unit 2 and the sleep function described above. Therefore, the power consumption of the entire sensor unit 2 is suppressed to a very small level. As a result, it has been confirmed that the sensor unit 2 can be driven by about four AA alkaline batteries for about three years, and that it can be driven for more than one year according to a field test.

  Each relay relay unit 3 is installed at a location distant from the sensor unit 2 and receives a plurality of measurement data transmitted from a plurality of sensor units 2 by wireless WL and transfers them to the relay 4 by wireless WL. Is. As shown in FIG. 4, each relay relay unit 3 is one in which a wireless communication unit 14, a memory 15, a battery 26, a microcomputer 17, and the like are integrated in a waterproof box 11, that is, an inclinometer 12 and soil. The configuration is basically the same as that of the sensor unit 2 except that the moisture meter 13 is not provided.

  Further, in the relay relay unit 3, since it is assumed that the power consumption is larger than that of the sensor unit 2, the battery 26 is constituted by a solar battery. The measurement data received by the wireless communication unit 14 is transferred to the repeater 4, D / A converted, input to the microcomputer 17, and stored in the memory 15.

  The repeater 4 is installed at a location away from the relay relay unit 3. The repeater 4 receives measurement data transmitted from a plurality of relay relay units 3 by wireless WL, converts the data format and protocol into data that can be transmitted via the cellular phone network PN or the Internet IN, and The data is transmitted to the mobile center 7 through the PN. The measurement data transmitted to the mobile center 7 is further transferred to the central monitoring device 5 via the Internet IN.

  The central monitoring device 5 includes a monitoring server 8 and a monitoring database 9. The monitoring server 8 evaluates the stability of the slope S in real time by performing stability analysis of the slope S according to a predetermined analysis program based on the transmitted measurement data. In this stability analysis, for example, the displacement at each measurement point of the slope S is calculated from the inclination angle of the slope S measured by the inclinometer 12, and the calculated displacement and the moisture content of the slope S measured by the soil moisture meter 13 are calculated. This is done by calculating a safety factor Fs against the collapse of the slope S based on the rate and their transition. When the slope collapses, the slope displacement and moisture saturation often increase as signs, so the stability of the slope S can be appropriately evaluated by the stability analysis as described above.

  In addition, as a result of the stability analysis, when it is recognized that the safety factor Fs has decreased and the slope S may collapse, the predicted time Tf until the slope S collapses is calculated from the transition of the safety factor Fs and the like. Then, alarm information is set based on that. In addition, the monitoring database 9 stores information such as measurement data transmitted to the central monitoring device 5 and the calculated safety factor Fs.

  The user terminal 6 is composed of a personal computer or a mobile phone, can communicate with the central monitoring device 5 via the Internet IN, and can access the central monitoring device 5 and read information in the monitoring database 9 at any time. . Further, the alarm information described above is distributed from the monitoring server 8 to the user terminal 6 in which the mail address is registered in advance.

  Next, operations of the monitoring system 1 having the above-described configuration will be described together. On the on-site slope S, in each sensor unit 2, the inclination angle of the slope S by the inclinometer 12 and the moisture content of the slope S by the soil moisture meter 13 are measured every predetermined time. The obtained measurement data is stored in the memory 15 and transmitted from the wireless communication unit 14 to the relay relay unit 3 by wireless WL every predetermined time. In the example of FIG. 1, measurement data from a plurality of sensor units 2 installed on one slope S is transmitted to one relay relay unit 3 and from a plurality of sensor units 2 installed on another slope S. The measurement data is transmitted to the other relay relay unit 3.

  The measurement data transmitted to each relay relay unit 3 is stored in the memory 15 and transferred to the relay device 3 by wireless WL. After the data format is converted by the repeater 3, the measurement data is transmitted to the mobile center 7 via the mobile phone network PN, and further transferred to the central monitoring device 5 via the Internet IN.

  The monitoring server 8 of the central monitoring device 5 calculates the safety factor Fs against the collapse of the slope S by performing the stability analysis described above for each slope S based on the transmitted measurement data, and monitors the slope S in real time. In addition, necessary alarm information is set according to the situation. The monitoring database 9 stores information related to the slope S such as measurement data and the calculated safety factor Fs.

  The user of the user terminal 6 can access the central monitoring device 5 via the Internet IN and read out and obtain information in the monitoring database 9 at any time. When alarm information is set in the monitoring server 8, the alarm information is promptly distributed to the user terminal 6 that registered the mail address.

  As described above, according to the slope monitoring system 1 of this embodiment, the measurement data measured by the inclinometer 12 and the soil moisture meter 13 of the sensor unit 2 installed on the slope S are incorporated in the sensor unit 2. It transmits by wireless WL by the wireless communication unit 14 driven by the battery 16, and transmits from the repeater 4 to the central monitoring device 5 using the existing mobile phone network PN and the Internet IN. Therefore, measurement data correlating with the stability of the slope S can be obtained in real time with a simpler and less expensive configuration without requiring a regular power supply or communication cable in the field, thereby targeting more slopes S As described above, the slope S can be effectively monitored in real time.

  Moreover, since the relay relay unit 3 installed between the sensor unit 2 and the repeater 4 transfers the measurement data from the sensor unit 2 to the repeater 4 by wireless WL, the distance between the site and the repeater 4 is large. Even in this case, measurement data can be obtained simply and inexpensively by relaying by the relay relay unit 3. Furthermore, since the relay relay unit 3 collectively transfers a plurality of measurement data from the plurality of sensor units 2 to the relay 4, the monitoring system 1 can be further simplified and reduced in cost.

  Further, since information such as measurement data stored in the monitoring database 8 of the central monitoring device 5 can be read from the user terminal 6 via the Internet IN, for example, local residents and transportation facilities can stabilize the slope S. Can be easily obtained and used effectively for countermeasures.

  Furthermore, since the central monitoring device 5 evaluates the stability of the slope S based on the collected measurement data, and distributes the obtained evaluation result to the user terminal 6 in which the e-mail address is registered in advance, the slope S When the risk of collapse of the plant becomes high, the information can be quickly distributed and notified, so that it can be effectively used for countermeasures and damage prevention.

  In addition, by the sleep function of the sensor unit 2, measurement by the inclinometer 12 and the soil moisture meter 13 and transmission of measurement data by the wireless communication unit 14 are intermittently performed at predetermined time intervals. At the time of transmission of measurement data by the wireless communication unit 14, particularly large power is consumed, but it is not always necessary to acquire measurement data at such a short interval when there is no risk of the slope S collapsing. Therefore, the monitoring system 1 can be realized by effectively saving power and extending the life of the battery 16 while acquiring necessary measurement data by intermittently performing measurement by the inclinometer 12 and transmission by the wireless communication unit 14. Maintenance can be facilitated.

  Furthermore, as the measurement data by the sensor unit S, the inclination angle of the slope S by the inclinometer 12 and the moisture content in the soil of the slope S by the soil moisture meter 13 are measured. It can be used effectively.

  Further, since the inclinometer 12, the wireless communication unit 14, and the battery 16 of the sensor unit 2 are built in the waterproof box 11, these components can be effectively protected by the waterproof box 11. Furthermore, by assembling the sensor unit 2 in advance, installation on the site can be performed more easily.

  Further, since the memory 15 for storing the measurement data is built in the sensor unit 2, the measurement data stored in the memory 15 can be collected by collecting the memory 15 periodically or during maintenance of the sensor unit 2. It can be effectively used as data supplementing measurement data transmitted in real time.

  In addition, this invention can be implemented in various aspects, without being limited to the described embodiment. For example, in the embodiment, the relay relay unit 3 is arranged in one stage between the sensor unit 2 and the repeater 4, but when the distance between the sensor unit 2 and the repeater 4 is large, FIG. As shown, the relay relay unit 3 is arranged in series at a plurality of stages according to the distance so that the measurement data is relayed sequentially between the relay relay units 3 and 3 and transmitted to the relay 4. Also good.

  In addition, as shown in FIG. 6, a plurality of relay relay units 3 are arranged in parallel with respect to the sensor unit 2, and the measurement data measured by the sensor unit 2 is relayed via these relay relay units 3. 4 may be transmitted. According to this configuration, even when a failure or abnormality occurs in one relay relay unit 3, the relay route is secured by another relay relay unit 3, so transmission of measurement data to the relay 4 can be performed more reliably. It can be carried out.

  Further, by combining the methods shown in FIG. 5 and FIG. 6, a plurality of relay relay units 3 arranged in series are further arranged in parallel as shown in FIG. 7, and the measurement data is relayed via the respective relay routes. It may be transmitted to the device 4. Thereby, even when the distance between the sensor unit 2 and the repeater 4 is large, the measurement data can be reliably transmitted to the repeater 4. Although not shown in the figure, the relay route by the plurality of relay relay units 3 may be networked, whereby the certainty of transmission of the measurement data to the relay device 4 can be further improved.

  In the embodiment, the measurement data is transferred from the repeater 4 to the central monitoring device 5 via the mobile phone center 7 via the mobile phone network PN and the Internet IN. Instead, it may be performed directly on the Internet IN.

  Furthermore, in the embodiment, the execution interval of measurement data transmission and transmission in the sensor unit 2 is set to a predetermined time (for example, 1 minute), but this execution interval is always set to a predetermined time by changing the control program. On the other hand, when a sign of collapse appears on the slope S, for example, when the measured slope angle or moisture content of the slope S or the amount of change thereof exceeds a predetermined value, the slope S may be set shorter. . Thereby, it is possible to more appropriately monitor the slope S based on measurement data sampled at a higher frequency in an emergency in which a sign of slope failure appears.

  In the embodiment, the inclination angle and moisture content of the slope S are measured by the inclinometer 12 and the soil moisture meter 13 as data correlated with the stability of the slope S, but in addition to or in place of these. In addition, other useful data, such as the groundwater level of the slope S, pore water pressure, local rainfall and humidity, may be measured. Thereby, the slope S can be appropriately monitored, for example, the accuracy of stability analysis can be increased. In addition, it is possible to appropriately change the detailed configuration within the scope of the gist of the present invention.

1 Monitoring System 2 Sensor Unit 3 Relay Relay Unit 4 Repeater 5 Central Monitoring Device (Monitoring Device)
6 User terminal 8 Monitoring server (evaluation means, distribution means)
9 Monitoring database 11 Waterproof box 12 Inclinometer (sensor)
13 Soil moisture meter (sensor)
14 Wireless communication unit (wireless communication device)
15 Memory 16 Battery 17 Microcomputer (Control Device)
26 Battery S Slope WL Wireless PN Mobile phone network (first communication means)
IN Internet (first communication means, second communication means)

Claims (11)

A sensor that is installed on a slope and measures data correlated with the stability of the slope, a wireless communication device that wirelessly transmits the measured measurement data, and a sensor that has a battery that serves as a power source for the sensor and the wireless communication device Unit,
A repeater that is installed at a location away from the sensor unit and converts the measurement data transmitted from the sensor unit into a format that can be transmitted by the first communication means;
A monitoring device that collects measurement data transmitted from the repeater via the first communication means, and monitors the slope based on the collected measurement data;
A slope monitoring system comprising:   A relay communication unit that is installed between the sensor unit and the repeater and wirelessly transfers measurement data transmitted from the sensor unit to the repeater, and a battery serving as a power source for the wireless communication device The slope monitoring system according to claim 1, further comprising:   3. The sensor unit according to claim 2, wherein the sensor unit includes a plurality of sensor units, and the relay relay unit transfers a plurality of measurement data respectively transmitted from the plurality of sensor units to the repeater. Slope monitoring system.   The slope monitoring system according to any one of claims 1 to 3, wherein the first communication means is a mobile phone network or the Internet.   The monitoring device includes a monitoring database that stores the collected measurement data, and the stored measurement data is configured to be readable through a second communication unit. The slope monitoring system according to any one of 4 above.   6. The slope monitoring system according to claim 5, wherein the second communication means is a mobile phone net or the Internet.   The monitoring device distributes an evaluation unit for evaluating the stability of the slope based on the collected measurement data, and the evaluation result of the stability of the slope by the evaluation unit to a pre-registered mail address. The slope monitoring system according to claim 1, further comprising a distribution unit.   The said sensor unit further has a control apparatus which controls so that measurement data measurement by the sensor and measurement data transmission by the wireless communication device may be intermittently performed at a predetermined timing. The slope monitoring system according to any one of 7 to 7.   The said sensor contains the inclinometer for measuring the displacement of the said slope, and the soil moisture meter for measuring the water | moisture content in the soil of the said slope. Slope monitoring system.   The slope monitoring system according to claim 1, wherein the sensor, the wireless communication device, and the battery of the sensor unit are built in a waterproof box.   The slope monitoring system according to claim 1, wherein the sensor unit includes a memory that stores measurement data measured by the sensor.

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