JP2020061980A - Water level detection system of paddy field and water level detection device - Google Patents

Abstract

To provide a water level detection system for a paddy field capable of correctly detecting a water level of a paddy field without being affected by precipitation of mud, spider or dust.SOLUTION: There is provided a water level detection system for a paddy field comprising a paddy field water level detection device 10 and an information management server 30. The paddy field water level detection device comprises: a column body erected on a paddy field; an ultrasonic sensor part which is provided on the column body and emits an ultrasonic pulse to a water level direction of the paddy field, receives an ultrasonic pulse reflected on the water level of the paddy field, and acquires various kinds of information; a tray reception part which is provided on a lower end of the column body, and is embedded so that an upper end edge thereof is positioned on a plow layer surface; a fixing pile for fixing the tray reception part to an installation site in the paddy field; and a water level information transmission part which transmits the various kinds of information acquired by the ultrasonic sensor part. The information management server calculates water level information of a paddy field on the basis of the various kinds of information received, and then transmitting the same to an information communication terminal 40 of a manager of a paddy field or a farming worker. The tray reception part of the paddy field water level detection device 10 is vertically moved according to a state of the plow layer.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a water level detection system for a paddy field and a water level detection device capable of accurately grasping the water level of a paddy field.

  In the rice cultivation in the paddy field, it is required to accurately control the water level in the paddy field, and as a device for measuring the water level in the paddy field, a device for measuring by a means such as a float, a pressure sensor, or electric conduction has been developed. For example, Patent Document 1 discloses a paddy field water level setting device that opens and closes a water tap by a ball tap valve that moves up and down according to the paddy field water level.

JP, 2000-166403, A

  However, since the installation location is in the paddy field, the sediment level of the device and the intrusion of spiders, garbage, etc. will affect the water level measurement of the paddy field and the actual water level can be measured accurately. Therefore, it was difficult to accurately detect the water level in the paddy field.

  In view of the above problems, the present invention provides a water level detection system and a water level detection device capable of accurately detecting the water level of a paddy field without being affected by sedimentation of mud, spiders, intrusion of dust, and the like. Especially.

The paddy field water level detection system of the present invention made to solve the above-mentioned problems is a paddy field water level detection system for detecting the water level of a paddy field, and a pillar body standing in the paddy field and a vertical direction from the water surface of the paddy field. At a position separated by a predetermined distance, provided on the pillar, emits ultrasonic pulses in the water surface direction of the paddy field, receives the ultrasonic pulse reflected on the water surface of the paddy field, and calculates the water level of the paddy field. An ultrasonic sensor unit for acquiring various kinds of information, a saucer unit provided at the lower end of the pillar body, and an upper end edge of which is buried so as to be located on the soil layer surface of the soil layer, and the saucer unit. A fixed pile fixed to the installation location in the paddy field, a water level information transmission unit that transmits various information for calculating the water level of the paddy field acquired by the ultrasonic sensor unit, and a paddy field water level detection device, Calculate the water level of the paddy field Various information for receiving, and based on the received various information for calculating the water level of the paddy field, calculates the water level information of the paddy field, and transmits it to the information communication terminal of the paddy field manager or the agricultural worker. An information management server is provided, and the saucer part of the paddy field water level detection device is vertically moved according to the state of the soil layer.
With this configuration, the paddy field manager or the agricultural worker can detect the water level information of the paddy field detected by the paddy field water level detection device installed in the paddy field without being affected by sedimentation of mud, intrusion of spiders, garbage, etc. Can be accurately grasped by the information communication terminal owned by the user.

Further, in the paddy water level detection system of the present invention, the information management server stores in advance the distance to the upper edge of the ultrasonic sensor section and the saucer section as a reference height, while being transmitted by the water level information transmission section. The water level information of the paddy field is calculated based on various information for calculating the water level of the paddy field and the reference height.
With this configuration, the water level in the paddy field can be calculated accurately.

Further, the paddy field water level detection system of the present invention, the information management server, when the calculated water level information of the paddy field is a negative value, the paddy field water level information indicating that there is no water in the paddy field. It is characterized by calculating.
With this configuration, it is possible to grasp the state where there is no water in the paddy field.

Further, the rice paddy water level detection system of the present invention, various information for calculating the water level of the paddy field, the ultrasonic sensor unit, until the ultrasonic wave is reflected from the water surface of the paddy field to the round trip. It is characterized in that it is a measured value calculated from the time and the propagation velocity of the ultrasonic pulse.
With this configuration, various information for calculating the water level of the paddy can be accurately detected.

Further, in the paddy water level detection system of the present invention, the saucer portion is formed with a fixed pile insertion hole having a hole diameter larger than the diameter of the fixed pile, so that the saucer portion is in a state of a soil layer of a paddy field It is characterized by moving up and down according to.
With this configuration, various information for calculating the water level of the paddy field can be accurately detected according to the state of the soil layer of the paddy field.

Further, in the paddy field water level detection system of the present invention, the reference height can be changed by setting a correction value for each of the paddy field water level detection devices when the paddy field water level detection device is installed in the paddy field. Is characterized by.
With this configuration, it is possible to accurately grasp the water level information of the paddy field according to the state of the paddy field water level detection device installed in the paddy field.

  In addition, the paddy field water level detection system of the present invention includes a relay unit that relays various information for calculating the water level of the paddy field transmitted from the paddy field water level detection device installed in a predetermined area to a wide area network. However, the relay means can relay to the information management server located on the wide area network.

Further, the paddy field water level detection device of the present invention is provided with a pillar body standing upright in the paddy field, at a position separated by a predetermined distance in the vertical direction from the water surface of the paddy field, and is provided on the pillar body, and is superposed in the water surface direction of the paddy field. An ultrasonic sensor unit that emits a sound wave pulse and can receive the ultrasonic wave pulse reflected on the water surface of the paddy field, and the time from when the ultrasonic wave pulse is emitted to when the ultrasonic wave pulse is reflected on the water surface of the paddy field and reciprocates. And a propagation speed of the ultrasonic pulse, a water level information processing unit for calculating water level information of the paddy field, and a saucer unit provided at the lower end of the support body and embedded in the soil layer of the paddy field And a fixed pile for fixing the saucer section to an installation place in the paddy field, and a water level information transmission section for transmitting the water level information of the paddy field calculated by the water level information processing section, and the saucer The upper edge of the part is of the soil layer By being embedded so as to be positioned in the soil layer surface, characterized in that it moves up and down according to the state of the plow layer.
With this configuration, it is possible to accurately detect the water level in the paddy field without being affected by sedimentation of mud, intrusion of spiders, dusts, and the like.

  The paddy water level detection system of the present invention is a paddy field manager, or an agricultural worker, is detected by a paddy field water level detection device installed in a paddy field without being affected by sedimentation of mud, spiders, invasion of garbage and the like. The water level information of the paddy field can be accurately grasped by the information communication terminal owned by oneself. Further, the paddy field water level detection device of the present invention can accurately detect the water level of a paddy field without being affected by sedimentation of mud, intrusion of spiders, dusts and the like.

It is a schematic diagram showing an example of composition of the whole paddy field water level detection system of an embodiment concerning the present invention. It is explanatory drawing which shows the paddy field water level detection apparatus of embodiment which concerns on this invention. It is a functional block diagram of a paddy field water level detection device of an embodiment concerning the present invention. It is a partial expanded explanatory view explaining the calculation procedure of the water level information of a paddy field by the paddy field water level detection apparatus of the embodiment which concerns on this invention. It is a schematic diagram showing an example of composition of a measurement value database memorized by information storage of an embodiment concerning the present invention. It is a functional block diagram of the information management server of the embodiment concerning the present invention. It is a partial expanded explanatory view explaining the calculation procedure of the water level information of a paddy field in the state where there is no water in a paddy field by the paddy field water level detection apparatus of embodiment concerning this invention. It is a schematic diagram showing an example of composition of a water level information database memorized by information management server of an embodiment concerning the present invention. It is a schematic diagram which shows an example of the display screen in which the water level information calculated by the paddy field water level detection apparatus of embodiment which concerns on this invention is displayed on an information communication terminal. It is a schematic diagram which shows another example of the display screen in which the water level information calculated with the paddy field water level detection apparatus of embodiment which concerns on this invention is displayed on an information communication terminal.

  Hereinafter, a paddy field water level detection system and a paddy field water level detection device of an embodiment concerning the present invention are explained based on Drawings 1-3. FIG. 1 is an overall explanatory diagram of a paddy field water level detection system according to an embodiment of the present invention. FIG. 2 is an explanatory diagram showing a paddy field water level detection device according to an embodiment of the present invention. Further, FIG. 3 is a functional block diagram of the paddy field water level detection device according to the embodiment of the present invention.

  The paddy field water level detection system according to the embodiment of the present invention is provided on the pillar body 11 standing on the paddy field 1 and on the pillar body 11 at a position separated from the water surface W of the paddy field 1 in the vertical direction by a predetermined distance. Of the ultrasonic sensor unit 12, the strut body 11, which emits ultrasonic pulses in the water surface direction X of the paddy field 1, receives the ultrasonic pulse reflected by the water surface W of the paddy field 1 and acquires various information for calculating the water level of the paddy field 1. The saucer part 14 that is embedded in the lower end part 11a of the soil and the upper end edge 14a of which is located on the soil layer surface 2a of the soil layer 2, and the fixing to fix the saucer part 14 to the installation location in the paddy field 1 Paddy field water level detection device 10 including a pile 15 and a water level information transmission unit 17 that transmits various information for calculating the water level of the paddy field 1 acquired by the ultrasonic sensor unit 12, and the water level of the paddy field 1 is calculated. Received and received various information for It has an information management server 30 which calculates the water level information d of the paddy field 1 based on various information for calculating the water level of the paddy field 1 and transmits it to the information communication terminal 40 of the manager of the paddy field 1 or the agricultural worker. . The various information for calculating the water level of the paddy field 1 includes the time Δt from the time when the ultrasonic wave pulse is emitted to the time when the ultrasonic wave is reflected back and forth on the water surface W of the paddy field 1 and the propagation velocity v of the emitted ultrasonic wave pulse. , A measurement value m indicating the distance from the ultrasonic sensor unit 12 to the water surface W of the paddy field 1 calculated based on the time Δt and the propagation velocity v.

  Further, the saucer portion 14 that constitutes the paddy water level detection device 10 moves up and down according to the state of the soil layer 2.

  The pillar 11 is formed in a cylindrical shape made of metal or resin such as vinyl chloride, and is erected at a predetermined place in the paddy field 1 as shown in FIG. Further, a tray portion 14 is provided at the lower end portion 11 a of the column body 11. Further, the device main body 16 is provided at the upper end 11b of the support body 11, and various information for calculating the water level of the paddy field 1 acquired by the ultrasonic sensor unit 12 is processed inside the device main body 16. It has a water level information processing unit 13 and an information transmission unit 17 that transmits various kinds of information for calculating the water level of the paddy field 1 acquired by the ultrasonic sensor unit 12.

  The ultrasonic sensor unit 12 is provided on the support body 11 at a position vertically separated from the water surface W of the paddy field 1 by a predetermined distance, and emits ultrasonic pulses in the water surface direction X of the paddy field 1 at the water surface W of the paddy field 1. Receive the reflected ultrasonic pulse. In the present embodiment, the ultrasonic sensor unit 12 is provided on the support column 11 at a height position that is 25 cm to 30 cm away from the water surface W of the paddy field 1.

  The ultrasonic sensor unit 12 according to the present embodiment includes an ultrasonic wave emitting unit 12a that emits an ultrasonic pulse in the water surface direction X of the paddy field 1 and an emitted ultrasonic pulse that is reflected on the water surface W of the paddy field 1 and reciprocates. An ultrasonic wave reception unit 12b that receives the returned ultrasonic wave pulse is provided (see FIG. 3). In addition, the ultrasonic sensor unit 12 includes a sensor control unit 12c that controls each process of the ultrasonic wave emission unit 12a or the ultrasonic wave reception unit 12b. The ultrasonic sensor unit 12 is a water level meter that can measure the water level in a non-contact manner with the water surface, and since it has the same configuration as an existing ultrasonic water level meter, an overview will be described, but a detailed description will be given. Omit it.

  As shown in FIGS. 2 to 4, the ultrasonic wave emitting unit 12a emits ultrasonic pulses in the water surface direction X of the paddy field 1. When an ultrasonic wave pulse is emitted by the ultrasonic wave emission unit 12a, the sensor control unit 12c acquires the emission time t1 at which the ultrasonic wave pulse is emitted and the propagation velocity v of the ultrasonic pulse, and the device main body unit 16 to be described later. To the information storage unit 18 provided in the.

  The ultrasonic wave reception unit 12b receives an ultrasonic wave pulse reflected by the water surface W of the paddy field 1 and reciprocated. When the ultrasonic wave receiving unit 12b receives the ultrasonic wave pulse, the sensor control unit 12c acquires the reception time t2 at which the ultrasonic wave pulse is received and outputs it to the information storage unit 18 provided in the apparatus main body unit 16.

  The sensor control unit 12c emits an ultrasonic pulse emitted from the ultrasonic emission unit 12a at a time t1, a reception time t2 of an ultrasonic pulse received by the ultrasonic receiving unit 12b, and an emission from the ultrasonic emission unit 12a. When acquiring the propagation velocity v of the ultrasonic pulse to be generated, they are linked to each other and output to the information storage unit 18 provided in the apparatus main body unit 16.

  Further, the sensor control unit 12c acquires each of the above-described emission time t1, reception time t2, and ultrasonic pulse propagation velocity v, and also performs each processing performed by the ultrasonic emission unit 12a and the ultrasonic reception unit 12b. To control. For example, the sensor control unit 12c may set an ultrasonic pulse emission interval at an arbitrary timing (every 1 hour to 1 day, etc.) and cause the ultrasonic emission unit 12a to emit an ultrasonic pulse at the set timing. it can.

  The water level information processing unit 13 calculates the time Δt until the ultrasonic pulse is reflected on the water surface W of the paddy field 1 and reciprocates, based on the above-described emission time t1 and reception time t2. Next, the water level information processing unit 13 calculates the measured value m based on the time Δt required for the ultrasonic pulse to be reflected on the water surface W of the paddy field 1 and reciprocate, and the propagation velocity v of the ultrasonic pulse. Here, the calculated measurement value m indicates the distance from the ultrasonic sensor unit 12 to the water surface W of the paddy field 1 as shown in FIG.

  In this way, the measurement value m calculated by the water level information processing unit 13 is relayed from the information transmitting unit 17 to the relay device 50 and then transmitted to the information management server 30, as shown in FIG. Here, when transmitted from the information transmission unit 17, the water level information processing unit 13 associates the emission time t1 of the ultrasonic pulse with the measurement value m as the measurement time T, and assigns it to each paddy water level detection device 10. It is linked to the device identification number (device ID) and relayed to the relay device 50, and then transmitted to the information management server 30.

  The saucer portion 14 has a deep dish shape as a whole, and is formed of a bottom surface portion and a side wall portion provided upright from an outer edge of the bottom surface portion. The center of the bottom surface of the saucer portion 14 is fixed to the lower end portion 11 a of the support column 11. Furthermore, the saucer part 14 can be fixed to the installation place in the paddy field 1 by the plurality of fixing piles 15. In the present embodiment, the saucer portion 14 is formed with a fixed pile insertion hole 14a having a hole diameter larger than the diameter of the fixed pile 15, and the plurality of fixed piles 15 are arranged so as to be inserted through the fixed pile insertion hole 14a. Since the tips of these fixed piles 15 reach beyond the soil layer 2 of the paddy field 1 to the plow floor layer 3 located below the soil layer 2, the saucer portion 14 is placed within the predetermined paddy field 1. Can be fixed at the installation site.

  In the present embodiment, a plurality of fixed piles are embedded in the soil layer 2 such that the upper edge 14a of the side wall forming the saucer portion 14 is located on the soil layer surface 2a of the soil layer 2 of the paddy field 1. The saucer unit 13 is installed at a predetermined installation location of the paddy field 1 by 15. Then, after the rice field 1 is planted in the paddy field 1 and the soil layer 2 is gradually tightened, the soil layer surface 2a of the soil layer 2 is vertically vertically lowered, and the saucer portion 14 is also vertically vertically lowered. Further, since the fixed pile insertion hole 14a formed in the tray portion 14 and through which the plurality of fixed piles 15 are inserted is formed larger than the diameter of the fixed pile 15, the water of the paddy field 1 is discharged from the fixed pile insertion hole 14a. By the infiltration, the saucer portion 14 does not float, and the saucer portion 14 descends vertically downward in accordance with the state of the soil layer 2.

  On the other hand, when the paddy field 1 runs out of water and the soil layer surface 2a of the soil layer 2 is exposed, the water contained in the soil layer 2 gradually evaporates, and the soil layer 2 is soiled. As the layer surface 2a vertically lowers, the saucer portion 14 also vertically vertically lowers.

  The fixed pile 15 is made of metal as long as it has a bending strength that can withstand the strong wind in the paddy field water level detection device 10 and does not deteriorate even when placed in water for a long period of time. However, it may be made of resin.

  The device main body 16 is provided on the upper end 11b of the pillar 11, and is formed in a rectangular parallelepiped shape made of metal or resin. The apparatus main body 16 has an internal space in which the water level information processing unit 13, the information transmission unit 17, and the information storage unit 18 can be stored.

  As shown in FIG. 1, the information transmission unit 17 receives the measurement value m calculated by the water level information processing unit 13 and transmits it to the relay device 50. Here, when the measurement value m is transmitted from the information transmitting unit 17, the measurement time m is associated with the emission time t1 of the ultrasonic pulse as the measurement time T, and is assigned to each paddy water level detection device 10. It is linked to the device identification number (device ID) and transmitted to the relay device 50. Further, the information transmission unit 17 may be configured to directly transmit the measurement value m and the like to the information management server 30 not via the relay device 50 but via the Internet.

  The information storage unit 18 stores the measurement value database shown in FIG. Here, the measurement value database indicates a field 18a indicating "apparatus ID", a field 18b indicating "emission time (t1)", a field 18c indicating "reception time (t2)", and "time Δt". It is composed of a plurality of records including a field 18d, a field 18e indicating "propagation velocity (v)", and a field 18f indicating "measured value (m)".

  Specifically, the "device ID" is a device identification number assigned to each paddy field water level detection device 10 installed in the paddy field 1.

  The "apparatus ID" is various information for calculating the water level of the paddy field 1 acquired by the ultrasonic sensor unit 12, that is, the emission time t1, the reception time t2 when the information is detected, and the ultrasonic pulse of the paddy field 1 Based on the time Δt until the ultrasonic wave is reflected back and forth on the water surface W, the propagation velocity v of the ultrasonic pulse, the time Δt until the ultrasonic pulse is reflected on the water surface W of the paddy 1 and reciprocates, and the propagation speed v of the ultrasonic pulse. It is stored in association with the calculated measurement value m.

  Further, a panel-shaped solar cell 19 may be provided on the upper surface of the device body 16. The surface of the solar cell 19 is protected by a transparent acrylic solar cell cover, and the solar cell 19 converts light energy emitted from the sun into electric power by a photovoltaic effect. Then, the electric power converted by the solar cell 19 is charged into a storage battery (not shown) stored inside the device body 16. The electric power charged in the storage battery (not shown) is supplied to the ultrasonic sensor unit 12, the water level information processing unit 13, the information transmission unit 17, and the information storage unit 18 electrically connected to the storage battery, and the ultrasonic sensor unit 12 is connected. The water level information processing unit 13, the information transmission unit 17, and the information storage unit 18 can perform each process.

  The information management server 30 receives various kinds of information for calculating the water level of the paddy field 1 transmitted by the information transmitting unit 17 via the relay device 50 described later, and calculates the water level information d of the paddy field 1.

  In the present embodiment, as shown in FIG. 6, the information management server 30 stores a water level calculation unit 31 that calculates the water level information d of the paddy field 1 and a water level that stores the water level information d of the paddy field 1 calculated by the water level calculation unit 31. The storage unit 32 and the water level transmission unit 33 that transmits the water level information d of the paddy field 1 to the manager of the paddy field 1 and the information communication terminal 40 owned by the agricultural worker.

  The water level calculation unit 31 of the information management server 30 measures various information transmitted by the information transmission unit 17 for calculating the water level of the paddy field 1, that is, a measurement value indicating the distance from the ultrasonic sensor unit 12 to the water surface W of the paddy field 1. m and the reference height n previously stored in the water level storage unit 32 are acquired, and the difference between the measured value m and the reference height n is set as the water level information d of the paddy field 1 based on the following mathematical formula. Output to the storage unit 32.

(Equation 1)
Water level information d of paddy field 1 = standard height n-measured value m

  Specifically, when the calculated measurement value m is “27 cm”, the prestored reference height n is “30 cm”, and the water level information d of the paddy field 1 is calculated by applying the above equation, The water level information d of is 3 cm. As shown in FIG. 4, the reference height n is the height from the ultrasonic sensor portion 12 to the upper end edge 14a of the saucer portion 14 provided on the lower end portion 11a of the support body 11, so that the paddy field Only the water level of 1 is a value larger than the measured value m indicating the distance from the ultrasonic sensor unit 12 to the water surface W of the paddy field 1.

  On the other hand, regarding the calculation procedure of the water level information d1 of the paddy field 1 when the paddy field 1 runs out of water and the soil layer surface 2a of the soil layer 2 of the paddy field 1 is exposed as shown in FIG. explain.

  As shown in FIG. 7, when the paddy field 1 runs out of water and the soil layer surface 2a of the paddy layer 2 of the paddy field 1 is exposed, the ultrasonic pulse emitted from the ultrasonic wave emitting unit 12a is Measurement value m1 calculated by the water level information processing unit 13 that is reflected by the mud, dust, insects, or the bottom surface of the saucer unit 14 that is received by the ultrasonic wave receiving unit 12b and is calculated by the water level information processing unit 13. Is transmitted by the information transmitting unit 17.

  In the present embodiment, the water level calculation unit 31 of the information management server 30 acquires the measurement value m1 transmitted by the information transmission unit 17 and the reference height n stored in advance in the water level storage unit 32, and the above formula Based on, the difference between the measured value m1 and the reference height n is output to the water level storage unit 32 as the water level information d1 of the paddy field 1.

  Specifically, when the reference height n is “30 cm”, the measured value m1 is “34 cm”, and the above equation is applied to calculate the water level information d1 of the paddy field 1, the water level information d1 of the paddy field is “ -4 cm ". Note that the reference height n is a height dimension from the ultrasonic sensor portion 12 to the upper end edge 14a of the saucer portion 14 provided on the lower end portion 11a of the column body 11, as shown in FIG. Then, the measured value m1 is not the distance to the water surface W of the paddy field 1 but the distance to the bottom portion of the saucer portion 14 and the mud, insects, dust, etc. accumulated on the bottom portion, beyond the upper edge 14a of the saucer portion 14. Therefore, the value is larger than the reference height n.

  Then, when the water level information d1 of the paddy field 1 is a negative value, the water level calculation unit 31 determines that there is no water in the paddy field 1 (for example, a drought state). Then, the water level calculation unit 31 outputs to the water level storage unit 32 a notification stating that there is no water in the paddy field 1 (for example, the water level information d1 of the paddy field 1 is “0 cm”).

  The water level storage unit 32 of the information management server 30 stores the water level information database shown in FIG. 8, and has a field 21 indicating “apparatus ID”, a field 22 indicating “user ID”, and a field 23 indicating “paddy field ID”. A field 24 indicating "reference height (n)", a field 25 indicating "measurement time (T)", a field 26 indicating "measured value (m)", and "water level information (d)". And a field 27 shown in the figure.

  The “device ID” is a device identification number given to each paddy water level detecting device 10 installed in the paddy 1, and is given as, for example, “C11”, “C12”, “C21” ....

  Specifically, the "user ID" is a personal identification number given to each manager of the paddy field 1 or each farmer, and for example, "A01" for each manager of the paddy field 1 or each farmer, “A02” ... Is added. Here, the “user ID” means that when the paddy field water level detection device 10 is installed in an arbitrary paddy field 1, the administrator of the paddy field 1 or the agricultural worker operates the information communication terminal 40 owned by himself or herself. The “device ID” is automatically given when the “device ID” is registered in the water level information database of the water level storage unit 32, and is stored in the water level storage unit 32. In addition, when the “user ID” is set in advance, the information communication terminal 40 may be operated to input the “user ID” set in advance together with the “device ID”. When one administrator or an agricultural worker manages a plurality of paddy water level detecting devices 10, one “user ID” can be associated with a plurality of “device IDs”.

  The "paddy field ID" is a paddy field identification number assigned to each paddy field 1 managed by the administrator of the paddy field 1 or an agricultural worker. For example, "B001", "B002", "B003" for each paddy field 1 ... is added. Here, the "paddy field ID" means that when the paddy field water level detection device 10 is installed in an arbitrary paddy field 1, the administrator of the paddy field 1 or the agricultural worker operates the information communication terminal 40 owned by himself or herself. It is automatically given when the “device ID” is registered and stored in the water level storage unit 32. Further, when the “paddy field ID” is set in advance, the information communication terminal 40 may be operated to input the “paddy field ID” set in advance together with the “device ID”. Furthermore, the “Paddy field ID” is associated with the position information of the paddy field 1 acquired by the GPS function of the information communication terminal 40, transmitted to the information management server 30, and stored in the water level storage unit 32. In addition, when one administrator or an agricultural worker manages a plurality of paddy fields 1, one "user ID" can be associated with a plurality of "paddy field IDs". On the other hand, when one paddy field 1 is managed by a plurality of managers or agricultural workers, the same “paddy field ID” can be associated with a plurality of “user IDs”.

  As shown in FIG. 4, the “reference height (n)” is referred to as a height dimension from the ultrasonic sensor portion 12 to the upper end edge 14a of the saucer portion 14 provided on the lower end portion 11a of the support body 11. The “reference height (n)” is associated with the “apparatus ID” and stored in advance in the water level storage unit 32.

  “Measurement time (T)” is the emission time t1 of the ultrasonic pulse by the ultrasonic sensor unit 12 of the paddy water level detection device 10, and is, for example, “AM 10:00”, “AM 11:00”, “AM 12:00”. ... "PM 2:00". The “measured value (m)” is the distance from the ultrasonic sensor unit 12 calculated by the water level information processing unit 13 of the paddy field water level detection device 10 to the water surface W of the paddy field 1. The “measurement time (T)” is associated with the “measurement value (m)” and is stored in the water level storage unit 32.

  The “water level information (d)” is the water level of the paddy field 1 calculated based on the “reference height (n)” and the “measured value (m)”. The "water level information (d)" is associated with the "apparatus ID" every time it is calculated by the water level calculation unit 31.

  It should be noted that the “user ID” may be associated with the “contact information” of the user name, the mail address, and the telephone number information that can be transmitted to and received from the information communication terminal 40 of the administrator of the paddy field 1 or the agricultural worker. In addition, the “user ID” is allowed to access the information management server 30 from the information communication terminal 40 owned by the administrator of the paddy field 1 or the agricultural worker to access the water level information d of the paddy field 1. It is good to associate a "password".

  Further, the map information and image information of the paddy field 1 to which the “paddy field ID” is assigned may be linked and stored in the information management database.

  In addition, the water level transmission unit 33 of the information management server 30 stores the information communication terminal 40 owned by the administrator of the paddy field 1 or the agricultural worker stored in the water level information database in association with the user identification number (user ID). Based on contact information such as an email address and a telephone number that can be received at, the measurement time T and the water level information d transmitted by the paddy water level detection device 10 are information communication that the administrator of the paddy field 1 or an agricultural worker owns. It is transmitted to the terminal 40.

  The administrator of the paddy field 1 or the agricultural worker confirms the water level information d of the paddy field 1 transmitted to the information communication terminal 40 owned by him, and when the water level of the paddy field 1 is insufficient, Can be supplied, or when the water level in the paddy field 1 is excessive, it is possible to take measures in accordance with the situation, such as draining water from the paddy field 1.

  On the other hand, the water level transmitter 33 of the information management server 30 stores the information communication terminal 40 owned by the manager of the paddy field 1 or the agricultural worker stored in the water level information database in association with the user identification number (user ID). Based on contact information such as an email address and a telephone number that can be received at, the measurement time T transmitted by the paddy water level detection device 10 and a notification stating that there is no water in the paddy 1 are displayed in the water level transmission unit. 33 The information is transmitted to the information communication terminal 40 of the administrator of the paddy field 1 or the agricultural worker.

  The administrator of the paddy field 1 or the farm worker sends a notice to the information communication terminal 40 owned by the paddy field 1 that there is no water in the paddy field 1 (for example, the water level information d1 of the paddy field 1 is " 0 cm "is displayed), and appropriate measures such as supplying water to the paddy 1 can be taken.

  In the above-described embodiment, the reference height n is described as a fixed value, but the reference height n may be changed according to the situation of the paddy field water level detection device 10 installed in the paddy field 1. .

  As Example 1, from the ultrasonic sensor section 12 to the upper end edge 14a of the saucer section 14 provided on the lower end section 11a of the column body 11 in a state where the installation work of the paddy field water level detection device 10 on the paddy field 1 is completed. The height dimension is measured, the difference between the measured height dimension and the preset reference height n is calculated, and the calculated difference is set as the correction value h. Then, the manager of the paddy field 1 or the agricultural worker operates the information communication terminal 40 to transmit the correction value h to the information management server 30. At that time, the correction value h is associated with the device identification number (device ID) given to each paddy water level detection device 10. Then, the information management server 30 stores the received correction value h in the water level storage unit 32 in association with the reference height n associated with the same device identification number (device ID).

  Here, when the water level information d of the paddy field 1 is calculated by adding the correction value h, the information management server 30 includes the information transmission unit 17 of the paddy field water level detection device 10 assigned with the same device identification number (device ID). From the above, the relay device 50 relays the transmitted measured value m, and calculates the water level information d of the paddy field 1 using the following mathematical formula.

(Equation 2)
Water level information d of paddy field 1 = standard height n + correction value h-measured value m

  Specifically, when the reference height n is “30 cm”, the correction value h is “1 cm”, and the measured value m is “27 cm”, the water level information d of the paddy field 1 is “4 cm” by the above formula. On the other hand, when the reference height n is “30 cm”, the correction value h is “−2 cm”, and the measured value m is “27 cm”, the water level information d of the paddy field 1 is “1 cm” according to the above formula.

  In addition, as Example 2, in a state where the installation work of the paddy field water level detection device 10 in the paddy field 1 is completed, the ultrasonic sensor section 12 causes the upper end edge 14a of the saucer section 14 provided on the lower end section 11a of the support body 11. It is also possible to measure the height dimension up to and measure the height dimension as the changed reference height n1. The information communication terminal 40 owned by the administrator of the paddy field 1 or the agricultural worker is operated, and the change reference height n1 associated with the device identification number (device ID) is transmitted to the information management server 30. Then, the information management server 30 replaces the received change reference height n1 with the reference height n associated with the same device identification number (device ID), and stores it in the water level storage unit 32. The mathematical formula for calculating the water level information d of the paddy field 1 in this case is as follows.

(Equation 3)
Water level information d of paddy field 1 = change reference height n1-measured value m

  Moreover, the information management server 30 receives an access request from the information communication terminal 40 owned by the administrator of the paddy field 1 or the farm worker, and presents a website that can browse the water level information d and the like of the paddy field 1. You may have the water level provision part 34.

  When the water level providing unit 34 receives an access request (for example, input of “user ID”) from the information communication terminal 40, the “paddy ID” and “water level information (d) associated with the input“ user ID ”. ) ”,“ Measurement time (T) ”, and the like are extracted from the water level information database of the water level storage unit 32. Furthermore, the water level providing unit 34 generates a website that allows the administrator of the paddy field 1 or the farmer to view the extracted "water level information (d)" and "measurement time (T)", and issues an access request. The generated website is presented to the received information communication terminal 40.

  In addition, the water level providing unit 34 can request the input of a preset “password” in addition to the “user ID” when the access request is made from the information communication terminal 40. Further, the water level providing unit 34 can also set access authority for each "user ID", and presents websites with different viewable ranges according to the access authority set for the "user ID". May be

  Although not shown, the information management server 30 has an arithmetic processing unit such as a CPU that executes arithmetic processing of various programs and a storage unit that stores programs and various data used for various processes. The arithmetic processing unit is read by a program, a module, or the like according to the processing, and realizes the function of each unit included in the payment system 10 described later. Further, other hardware such as an input device such as a keyboard and a display device such as a display may be provided. Further, the storage unit may be stored in various data storage formats such as a database and a data file, and is not limited to the data storage format of the database and the data file, and may be any data storage format.

  The information communication terminal 40 is a smartphone, a tablet-type terminal, or a PC owned by the administrator of the paddy field 1 or an agricultural worker, and has a GPS function capable of acquiring the position information of the paddy field 1. As shown in FIG. 9, the water level information d for each paddy field 1 can be displayed, and as shown in FIG. 10, the water level information d for each paddy field 1 can be displayed on the map. Further, by inputting the given “user ID” and “password” from the information communication terminal 40, the information management server 30 is accessed, the website generated by the water level providing unit 34 is browsed, and the water level information of the paddy field 1 is accessed. It is also possible to confirm d and the like.

  The repeater 50 has the measurement value m and the measurement time T transmitted from the paddy field water level detection devices 10 installed in the paddy fields 1A and 1B within a predetermined area (for example, within a radius of 4 km to 8 km) around the repeater 50. Etc. can be received. Further, the relay device 50 can transmit the received measured value m, measured time T, etc. to the information management server 30 via a wide area network, so-called Internet.

  Since the paddy field water level detection device 10 according to the present embodiment can accurately calculate the water level information d of the paddy field 1, the administrator of the paddy field 1 or the agricultural worker can easily and accurately calculate the water level of the paddy field 1. The information d can be grasped.

  In the paddy field water level detection device 10 according to the present embodiment, the saucer part 14 constituting the paddy field water level detection device 10 moves vertically up and down according to the state of the soil layer 2 of the paddy field 1, so that the paddy field 1 Since the reference height n to the soil layer surface 2a of the layer 2 is constant, the water level information d of the paddy field 1 can be calculated accurately, so that the administrator of the paddy field 1 or the farmer can easily Moreover, the water level information d of the paddy field 1 can be accurately grasped.

  Since the paddy field water level detection device 10 according to the present embodiment can grasp the state in which the paddy field 1 has run out of water, the administrator of the paddy field 1 or the farmer must deal with the situation of the paddy field 1. You can

  Since the paddy water level detecting device 10 according to the present embodiment can correct the reference height n according to the condition installed in the paddy field 1, it is affected by the condition in which the paddy water level detecting device 10 is placed. Without it, it is possible to grasp the accurate water level information d of the paddy field 1.

  In addition to the configurations of the inventions and the embodiments, the invention disclosed in the present specification specifies, within an applicable range, these partial configurations by changing to other configurations disclosed in the present specification, or these. To the configuration described above with addition of other configurations disclosed in the present specification, or a generalized configuration in which these partial configurations are deleted and identified to the extent that partial operational effects are obtained.

  In the paddy water level detecting device 10 according to the present embodiment, the information management server 30 calculates the water level information d of the paddy field 1. However, the water level information processing unit 13 of the paddy field water level detecting device 10 calculates the water level information d of the paddy field 1. It may be configured to calculate.

  The water level information processing unit 13 calculates the measured value m based on the time Δt taken by the ultrasonic sensor unit 12 until the water is reflected on the water surface W of the paddy field 1 and reciprocates, and the ultrasonic pulse propagation velocity v. The reference height n and the correction value h may be received from the information management server 30 and the water level information d of the paddy field 1 may be calculated.

1 ... Paddy field 2 ... Soil layer 2a ... Soil layer surface 3 ... Plow floor layer 10 ... Paddy water level detection device 11 ... Strut body 11a ... Lower end 11b ... Upper end 12 ... Ultrasonic sensor part 12a ... Ultrasonic emitting part 12b ... Ultrasonic wave receiver 12c ... Sensor controller 13 ... Water level information processor 14 ... Sauce tray 14a ... Upper edge 15 ... Fixed pile 16 ... Device body 17 ... Information transmitter 18 ... Information storage 19 ... Solar cell 30 ... Information Management server 31 ... Water level calculation unit 32 ... Water level storage unit 33 ... Water level transmission unit 34 ... Water level providing unit 40 ... Information communication terminal 50 ... Repeater T ... Measuring time W ... Water surface d ... Water level information h ... Correction value m ... Measured value n ... Standard height

The paddy field water level detection system of the present invention made to solve the above-mentioned problems is a paddy field water level detection system for detecting the water level of a paddy field, and is provided at a lower end portion of a pillar body standing on the paddy field and the pillar body. is a buried pan section as the upper edge is located in the plow layer surface of the paddy fields, provided in front Symbol strut at a position a predetermined distance spaced vertically from said upper edge, the water surface direction of the water field Ultrasonic sensor unit that emits ultrasonic pulse to, receives the ultrasonic pulse reflected on the water surface of the paddy field, and acquires acquisition information for calculating the water level of the paddy field, and the saucer section is installed in the paddy field. and fixing stakes for the previous SL acquired information acquired by the ultrasonic sensor unit or the water level information transmission unit which transmits the water level data of the calculated paddy based on the acquired information, paddy water level detection with a a device, feeding the water level information Water level information of paddy fields which is calculated by receiving the acquired information sent from the part, or the water level information transmitted from the level information transmission unit includes a information management server to be transmitted to the information communication terminal, the prior serial saucer section, by work soil layer tightens, or by evaporation of the water contained in the plow layer, as the plow layer surface is lowered, the lower downward and wherein Rukoto.
With this configuration, the paddy field manager or the agricultural worker can detect the water level information of the paddy field detected by the paddy field water level detection device installed in the paddy field without being affected by sedimentation of mud, intrusion of spiders, garbage, etc. Can be accurately grasped by the information communication terminal owned by the user.

Further, paddy water level detection system of the present invention, one prior SL that has been stored in advance as a distance reference height before SL on edge and the ultrasonic sensor unit, and the acquisition information, on the basis of said reference height, before Kisui position information is calculated, characterized in Rukoto.
With this configuration, the water level in the paddy field can be calculated accurately.

Further, paddy water level detection system of the present invention, when Kisui position information before issuing calculated is a negative value, and transmits the effect to the paddy field is the absence of water to the information communication terminal .
With this configuration, it is possible to grasp the state where there is no water in the paddy field.

Further, the paddy field water level detection system of the present invention, the acquisition information, the ultrasonic sensor unit, the time from the ultrasonic pulse is emitted until the reciprocating reflected on the water surface of the paddy, and the ultrasonic pulse. It is a measured value calculated from the propagation velocity of.
With this configuration, it is possible to accurately detect the acquired information for calculating the water level of the paddy field.

Further, paddy water level detection system of the present invention, the pan portion, the Rukoto which have a fixed stake insertion hole of larger pore diameter than the diameter of the fixed piles, under downward and wherein Rukoto.
With this configuration, it is possible to accurately detect the acquired information for calculating the water level of the paddy field according to the state of the soil layer of the paddy field.

Further, paddy water level detection system of the present invention, the reference height, when installing the paddy water level detection device to the paddy field, can be changed by setting a correction value for each prior Kisui field water level detection device It is characterized by
With this configuration, it is possible to accurately grasp the water level information of the paddy field according to the state of the paddy field water level detection device installed in the paddy field.

Further, paddy water level detection system of the present invention has a relay means for relaying previous SL acquired information sent from the paddy water level detection device installed in a predetermined area in, or the water level information to the wide area network, The relay means can relay to the information management server located on the wide area network.

Further, the paddy field water level detection device of the present invention, a pillar body that is erected in the paddy field, a saucer portion that is embedded so that the upper end edge is located on the soil layer surface of the paddy field, and a vertical direction from the upper end edge. provided in the pillar body at a predetermined distance spaced apart position, the water surface direction of the water field emits an ultrasonic pulse, an ultrasonic sensor unit capable of receiving the ultrasonic pulses reflected by the water surface of the paddy fields, the time from being ultrasonic pulse is emitted until reciprocally reflected on the water surface of the paddy fields, said by using the propagation speed of the ultrasonic pulses, and the water level information processing unit for calculating the level information of the rice paddies, the pan the parts, and fixed piles for placement within paddy fields, has a water level information transmission unit that transmits Kisui position information before calculated by the water level information processing unit, by the plow layer tightens, Or by evaporation of water contained in the soil layer As the plow layer surface is lowered, the lower downward and wherein Rukoto.
With this configuration, it is possible to accurately detect the water level in the paddy field without being affected by sedimentation of mud, intrusion of spiders, dusts, and the like.
Furthermore, the paddy field water level detection system of the present invention is a paddy field water level detection system for detecting the water level of a paddy field, in which a pillar body standing in the paddy field and a lower end portion of the pillar body are provided, and the upper edge is the paddy field. The saucer part buried so as to be located on the surface of the soil layer, and provided on the support pillar at a position vertically separated from the upper edge by a predetermined distance, and emits an ultrasonic pulse in the water surface direction of the paddy field, An ultrasonic sensor unit that receives the ultrasonic pulse reflected on the water surface of the paddy field and acquires acquisition information for calculating the water level of the paddy field, a fixed pile for installing the saucer section in the paddy field, and the The acquisition information acquired by the sound wave sensor unit, or a water level information transmission unit that transmits water level information of the paddy field calculated based on the acquisition information, and a paddy water level detection device, and transmitted from the water level information transmission unit The said taking The information management server for transmitting the water level information of the paddy field calculated by receiving the information or the water level information transmitted from the water level information transmission unit to the information communication terminal, wherein the saucer unit is the soil It is characterized in that it moves up and down according to the surface of the soil layer which moves up and down as the water content in the layer increases and decreases.

The paddy field water level detection system according to the embodiment of the present invention includes a pillar body 11 standing on the paddy field 1 and a pillar at a position vertically separated from the soil layer surface 2a of the soil layer 2 of the paddy field 1 by a predetermined distance. Various information which is provided on the body 11 and which emits ultrasonic pulses in the water surface direction X of the paddy field 1 and receives the ultrasonic pulse reflected by the water surface W of the paddy field 1 to calculate the water level of the paddy field 1. The ultrasonic sensor section 12 for obtaining the information, the saucer section 14 provided on the lower end section 11a of the pillar body 11, and the saucer section 14 embedded so that the upper end edge 14a thereof is located on the soil formation layer surface 2a of the soil formation layer 2; Paddy field provided with a fixed pile 15 for fixing 14 to the installation location in the paddy field 1 and a water level information transmission section 17 for transmitting various information for calculating the water level of the paddy field 1 acquired by the ultrasonic sensor section 12. Calculate the water level of the water level detector 10 and the paddy field 1 Information of the paddy field 1 is calculated based on the received various information for calculating the water level of the paddy field 1 and the information communication terminal 40 of the manager of the paddy field 1 or the agricultural worker is received. And an information management server 30 for transmitting to The various information for calculating the water level of the paddy field 1 includes the time Δt from the time when the ultrasonic wave pulse is emitted to the time when the ultrasonic wave is reflected back and forth on the water surface W of the paddy field 1 and the propagation velocity v of the emitted ultrasonic wave pulse. , A measured value m indicating the distance from the ultrasonic sensor unit 12 to the water surface W of the paddy field 1 calculated based on the time Δt and the propagation velocity v.

The ultrasonic sensor unit 12 is provided on the pillar 11 at a position vertically separated from the soil layer surface 2a of the soil layer 2 of the paddy field 1 by a predetermined distance, and emits ultrasonic pulses in the water surface direction X of the paddy field 1. Then, the ultrasonic pulse reflected by the water surface W of the paddy field 1 is received. In the present embodiment, the ultrasonic sensor unit 12 is provided on the pillar body 11 at a height position that is 25 cm to 30 cm apart from the soil layer surface 2a of the soil layer 2 of the paddy field 1.

Claims (8)

A paddy field water level detection system for detecting the water level of a paddy field,
A pillar body standing upright in the paddy field, at a position separated by a predetermined distance in the vertical direction from the water surface of the paddy field, provided on the pillar body, emitting an ultrasonic pulse in the water surface direction of the paddy field, at the water surface of the paddy field. An ultrasonic sensor unit that receives the reflected ultrasonic pulse and acquires various information for calculating the water level of a paddy field, and is provided at the lower end of the pillar body, and the upper edge thereof is the soil of the soil layer. A saucer part that is buried so as to be located on the layer surface, a fixed pile that fixes the saucer part to the installation location in the paddy field, and various information for calculating the water level of the paddy field acquired by the ultrasonic sensor part A water level information transmission unit for transmitting the
Receiving various information for calculating the water level of the paddy field, based on various information for calculating the received water level of the paddy field, calculating the water level information of the paddy field, the manager of the paddy field, or the agricultural worker An information management server for transmitting to the information communication terminal of
Have
The paddy water level detection system, wherein the pan portion of the paddy water level detection device moves up and down according to the state of the soil layer.   The information management server stores in advance the distance from the ultrasonic sensor unit to the upper edge of the saucer unit as a reference height, and various information for calculating the water level of the paddy field transmitted by the water level information transmission unit. 2. The paddy field water level detection system according to claim 1, wherein the water level information of the paddy field is calculated based on the reference height and the reference height.   The information management server, when the calculated water level information of the paddy field is a negative value, calculates the water level information of the paddy field indicating that there is no water in the paddy field. Paddy water level detection system described.   Various information for calculating the water level of the paddy field, the ultrasonic sensor unit, the time from the ultrasonic pulse is emitted until it is reflected back and forth on the water surface of the paddy field, and the propagation speed of the ultrasonic pulse. The paddy field water level detection system according to any one of claims 1 to 3, wherein the measurement value is calculated from the above.   The saucer portion is formed with a fixed pile insertion hole having a hole diameter larger than the diameter of the fixed pile, so that the saucer portion moves up and down according to the state of the soil layer of the paddy field. The paddy field water level detection device according to claim 1.   The reference height can be changed by setting a correction value for each of the paddy water level detection devices when the paddy water level detection device is installed in the paddy field. Paddy water level detector described in Crab. Relay means for relaying to the wide area network various information for calculating the water level of the paddy field transmitted from the paddy field water level detection device installed in a predetermined area,
Have
The paddy field water level detection system according to claim 1, wherein the relay unit can relay to the information management server located on the wide area network. A pillar body standing in the paddy field,
At a position separated from the water surface of the paddy field by a predetermined distance in the vertical direction, the support body is provided, emits an ultrasonic pulse in the water surface direction of the paddy field, and receives the ultrasonic pulse reflected by the water surface of the paddy field. Ultrasonic sensor unit that can
The time from the ultrasonic pulse is emitted until it reciprocates by reflecting on the water surface of the paddy field, and the propagation speed of the ultrasonic pulse, a water level information processing unit that calculates the water level information of the paddy field,
A saucer portion provided at the lower end of the pillar body and buried in the soil layer of the paddy field,
A fixing pile for fixing the saucer part to an installation place in the paddy field,
A water level information transmission unit that transmits the water level information of the paddy field calculated by the water level information processing unit;
Have
The paddy water level detecting device is characterized in that the saucer part is vertically embedded according to the state of the soil layer by being buried so that the upper edge thereof is located on the surface of the soil layer of the soil layer. .

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