Dynamic monitoring device for soil water content

Abstract

The utility model belongs to the field of soil hydrothermal salt parameter measurement, and particularly relates to a dynamic monitoring device for soil water content, which comprises an equipment bin, a water storage bin, a water storage bin, a water storage bin cover, a water storage bin cover and a water storage bin cover, the base is connected with the equipment cabin and the plurality of probes; the plurality of probes comprise a signal probe, a first grounding probe, a second grounding probe, a third grounding probe and a fourth grounding probe which are fixed in a third fixing hole, a first fixing hole, a second fixing hole, a fourth fixing hole and a fifth fixing hole of the base through welding nuts; the base is further provided with a first temperature sensor and a second temperature sensor, and the first temperature sensor fixing hole and the second temperature sensor fixing hole are fixed to the base through welding nuts. The in-situ dynamic monitoring device is simple and compact in structure, easy to carry and operate and capable of achieving in-situ dynamic monitoring of the soil water content or the frozen soil unfrozen water content.

Description

Technical Field

[0001] The utility model belongs to the field of soil water, heat and salt parameter measurement, and in particular relates to a dynamic monitoring device for soil water content. Background Art

[0002] As one of the most important resources for human life, soil resource protection, especially the dynamic monitoring of various soil parameters, is particularly important. Researchers can adjust and protect the soil in a targeted manner based on the monitored soil parameters. At the same time, in agricultural related fields, farmers can scientifically carry out irrigation, fertilization and other activities based on the monitored soil parameters. Through the research and development of soil monitoring devices, the changes in various soil parameters can be observed in real time and accurately more accurately, conveniently and reliably, and targeted adjustments can be made. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a soil moisture content dynamic monitoring device to achieve real-time monitoring of soil moisture content.

[0004] The utility model is implemented as follows: a dynamic monitoring device for soil moisture content, the device comprising:

[0005] The equipment compartment is used to store batteries and related equipment and is connected to the equipment compartment cover with bolts;

[0006] A base, connecting the equipment compartment and multiple probes;

[0007] The plurality of probes include: a signal probe, a first grounding probe, a second grounding probe, a third grounding probe and a fourth grounding probe are fixed to the third fixing hole, the first fixing hole, the second fixing hole, the fourth fixing hole and the fifth fixing hole of the base by welding nuts;

[0008] The base is also provided with a first temperature sensor and a second temperature sensor, which are fixed to the first temperature sensor fixing hole and the second temperature sensor fixing hole of the base by welding nuts.

[0009] Furthermore, the size of the base is smaller than that of the equipment compartment, the cross-section of the equipment compartment is rectangular, the cross-section of the base is circular, and four equipment slots are provided on two corresponding sides of the rectangle.

[0010] Furthermore, the two device slots on one side are used to place the signal output ports of the DSS signal generator, and the signal output ports of the DSS signal generator are connected to the signal input ports on the base.

[0011] Furthermore, the two device slots on the other side are used to place the signal output ports of the amplitude and phase measurement circuit, and the signal output ports of the amplitude and phase measurement circuit are connected to the signal output ports on the base.

[0012] Furthermore, a battery fixing plate is provided between the two slots on the same side for placing a battery for powering the device.

[0013] Furthermore, a LoRa fixing hole is opened on the side of the equipment compartment for fixing the LoRa module, and the antenna extends outward from the LoRa fixing hole.

[0014] Furthermore, the signal control ends of the multiple probes are connected to the STM32 controller through a DDS signal generator, and the acquisition ends of the multiple probes are connected to the STM32 controller through an amplitude and phase measurement circuit; the first temperature sensor and the second temperature sensor are connected to the STM32 controller; and the STM32 controller is connected to the meteorological base station through a LoRa wireless transmission module.

[0015] Compared with the prior art, the utility model has the following beneficial effects: the utility model has a simple and compact structure, is easy to carry and operate, and can realize in-situ dynamic monitoring of soil moisture content or unfrozen water content of frozen soil. First, compared with the traditional soil moisture content monitoring device, the probe part of the utility model can replace probes of different lengths according to the needs of monitoring soil moisture content at different depths. Second, the utility model has a simple and compact structure, is easy to carry, and is simple to operate. Third, the utility model adopts the LoRa module to transmit data, realizes the networking of detection devices in a larger area, and can perform in-situ dynamic monitoring of soil moisture content or unfrozen water content of frozen soil in the area. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is an axonometric diagram of a dynamic monitoring device for soil moisture content proposed by the utility model;

[0017] Figure 2 This is a structural diagram of the equipment compartment of a dynamic monitoring device for soil moisture content proposed by the utility model;

[0018] Figure 3 This is a circuit block diagram of a soil moisture dynamic monitoring device proposed by the utility model;

[0019] Description in the figure: 1. Signal probe; 2. First grounding probe; 3. Second grounding probe; 4. Third grounding probe; 5. Fourth grounding probe; 6. First temperature sensor; 7. Second temperature sensor; 8. Base; 9. Equipment compartment; 10. LoRa fixing hole; 11. Equipment compartment cover; 12. First fixing hole; 13. First temperature sensor fixing hole; 14. Second fixing hole; 15. Signal input port; 16. Third fixing hole; 17. Fourth fixing hole; 18. Second temperature sensor fixing hole; 19. Fifth fixing hole; 20. Signal output port; 21-24. Equipment slot; 25-26. Battery fixing plate. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail in combination with the embodiments below. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0021] In this embodiment, see Figure 1 and Figure 2 As shown, the device comprises:

[0022] The equipment compartment 9 is used to store batteries and related equipment and is connected to the equipment compartment cover 11 with bolts;

[0023] A base 8, connecting the equipment compartment 8 and the plurality of probes;

[0024] The plurality of probes include: a signal probe 1, a first grounding probe 2, a second grounding probe 3, a third grounding probe 4 and a fourth grounding probe 5 fixed to a third fixing hole 16, a first fixing hole 12, a second fixing hole 14, a fourth fixing hole 17 and a fifth fixing hole 19 of the base by welding nuts;

[0025] The base is also provided with a first temperature sensor 6 and a second temperature sensor 7, which are fixed to the first temperature sensor fixing hole 13 and the second temperature sensor fixing hole 18 of the base by welding nuts.

[0026] The size of the base is smaller than that of the equipment compartment, the cross section of the equipment compartment is rectangular, the cross section of the base is circular, and four equipment slots (21-24) are arranged on two corresponding sides of the rectangle.

[0027] The two device slots (21-22) located on one side are used to place the signal output ports of the DSS signal generator, and the signal output ports of the DSS signal generator are connected to the signal input port 15 located on the base.

[0028] The two device slots (23-24) on the other side are used to place the signal output ports of the amplitude and phase measurement circuit, and the signal output ports of the amplitude and phase measurement circuit are connected to the signal output port 20 on the base.

[0029] A battery fixing plate is provided between the two slots on the same side for placing the storage battery for powering the device.

[0030] The battery fixing plate (25-26) is used to place the storage battery for powering the device;

[0031] A LoRa fixing hole is provided on the side of the equipment compartment for fixing the LoRa module, and the antenna extends outward from the LoRa fixing hole.

[0032] See also Figure 3 As shown, the device includes: a sensor probe, a temperature sensor, an STM32 controller, a DDS signal generator, an amplitude and phase measurement circuit, and a LoRa wireless transmission module. First, the STM32 controller sends a control signal to the DDS signal generator through a wire to control it to generate a 0-100 MHz sweep frequency signal that increases over time. The signal enters the signal input port 15 through the signal transmission line and is transmitted to the signal probe 1. Since the soil moisture content and temperature are different, the electrical signal will change to varying degrees. The changed signal is input to the amplitude and phase measurement circuit through the signal output port 20 through the signal transmission line. The circuit compares the received changed signal with the unchanged signal to obtain the amplitude and phase ratio between the two signals, and transmits the data to the STM32 controller. At the same time, the first temperature sensor 6 and the second temperature sensor 7 transmit the collected soil temperature data to the STM32 controller. The STM32 controller transmits the received temperature, amplitude ratio and phase ratio to the meteorological base station through LoRa wireless. The meteorological base station converts the amplitude ratio, phase ratio and temperature into soil moisture content after calculation. After completing another acquisition cycle, the STM32 will enter low-power mode and wake up after a preset time to collect and send soil data again. This process is repeated to achieve dynamic monitoring of soil moisture content and reduce power consumption.

[0033] In actual use, the device involved in the utility model is simpler and easier to install. It only requires burying the probe in the soil to dynamically monitor the soil moisture content.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A dynamic monitoring device for soil moisture content, characterized in that: The device includes: The equipment compartment is used to store batteries and related equipment and is connected to the equipment compartment cover with bolts; A base, connecting the equipment compartment and multiple probes; The plurality of probes include: a signal probe, a first grounding probe, a second grounding probe, a third grounding probe and a fourth grounding probe are fixed to the third fixing hole, the first fixing hole, the second fixing hole, the fourth fixing hole and the fifth fixing hole of the base by welding nuts; The base is also provided with a first temperature sensor and a second temperature sensor, which are fixed to the first temperature sensor fixing hole and the second temperature sensor fixing hole of the base by welding nuts.

2. The dynamic monitoring device for soil moisture content according to claim 1, characterized in that: The size of the base is smaller than that of the equipment compartment. The cross section of the equipment compartment is rectangular, and the cross section of the base is circular. Four equipment slots are arranged on two corresponding sides of the rectangle.

3. The dynamic monitoring device for soil moisture content according to claim 2, characterized in that: The two device slots on one side are used to place the signal output ports of the DSS signal generator, and the signal output ports of the DSS signal generator are connected to the signal input ports on the base.

4. The dynamic monitoring device for soil moisture content according to claim 3, characterized in that: The two device slots on the other side are used to place the signal output ports of the amplitude and phase measurement circuit, and the signal output ports of the amplitude and phase measurement circuit are connected to the signal output ports on the base.

5. The dynamic monitoring device for soil moisture content according to claim 3, characterized in that: A battery fixing plate is provided between the two slots on the same side for placing the storage battery for powering the device.

6. The dynamic monitoring device for soil moisture content according to claim 1, characterized in that: A LoRa fixing hole is provided on the side of the equipment compartment for fixing the LoRa module, and the antenna extends outward from the LoRa fixing hole.

7. The dynamic monitoring device for soil moisture content according to claim 1, characterized in that: The signal control ends of the multiple probes are connected to the STM32 controller through a DDS signal generator, and the acquisition ends of the multiple probes are connected to the STM32 controller through an amplitude and phase measurement circuit; the first temperature sensor and the second temperature sensor are connected to the STM32 controller; and the STM32 controller is connected to a meteorological base station through a LoRa wireless transmission module.

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