Wireless sensor for dielectric detection of calcium content in paddy soil

Abstract

The present application belongs to the technical field of paddy field soil humidity and element content detection, and relates to a wireless paddy field soil calcium content dielectric detection sensor. The wireless paddy field soil calcium content dielectric detection sensor comprises a cylinder cover and a probe, the cylinder cover is connected to the upper end of the probe, the cylinder cover comprises a battery charging port and a switch button, and a core detection circuit board and a battery are fixed inside, the probe comprises a probe circuit board and three stainless steel probes, the three stainless steel probes pass through the probe circuit board and the inside of the probe and are fixed by nuts, the core detection circuit board comprises a main control module, a signal generation module and a wireless communication module, and a high-frequency connector is arranged at the bottom of the core detection circuit board, and the main control module takes an STM32F405RGT6 series high-performance 32-bit single-chip microcomputer as a core. The present application has the advantages of low cost, good timeliness, convenient installation, long-distance wireless transmission and the like, can realize long-term real-time online monitoring of paddy field soil humidity and calcium content, improves the planting efficiency of rice, and has a good application prospect.

Description

Technical Field

[0001] This invention belongs to the field of paddy field soil moisture and element content detection technology, and relates to a wireless paddy field soil calcium content dielectric detection sensor. Background Technology

[0002] Rice growth requires a suitable environment, and soil moisture is the most important environmental factor for normal crop growth, while calcium is an indispensable element for rice growth. Therefore, accurately and in real-time monitoring of soil moisture and calcium content is of great significance for rice production practices. Online real-time monitoring of soil moisture and calcium content helps save agricultural inputs, maintain appropriate soil moisture, prevent excessive application of calcium fertilizer, and create a favorable environment for rice growth.

[0003] Most existing soil moisture and calcium content sensors on the market suffer from low accuracy, high cost, poor portability, and difficulties in data transmission, making them unsuitable for long-term field operation and hindering their practical application in farmland monitoring. Therefore, this invention designs a wireless dielectric sensor for detecting calcium content in paddy soil. This sensor boasts advantages such as low power consumption, long lifespan, stable operation, and accurate real-time data transmission, enabling long-term online monitoring of paddy soil moisture and calcium content, meeting practical production needs, and demonstrating promising application prospects. Summary of the Invention

[0004] Based on the above, the purpose of this invention is to provide a low-cost, timely, easy-to-install, and long-distance multi-point wireless sensor for detecting the dielectric content of calcium in paddy soil that can be applied in agriculture.

[0005] The technical solution of this invention is:

[0006] A wireless dielectric sensor for detecting calcium content in paddy field soil is disclosed. It is used for wirelessly monitoring soil moisture and calcium content data in paddy fields. The sensor includes a cap and a probe. The cap is mounted on the upper end of the probe. The cap includes a battery charging port and a switch button, and a core detection circuit board and a battery are fixed inside. The probe includes a probe circuit board and three stainless steel probes, which pass through the probe circuit board and the probe interior and are secured with nuts. The switch button is connected to the core detection circuit board via a switch connection wire. The core detection circuit board includes a main control module, a signal generation module, and a wireless communication module, and has a high-frequency connector at the bottom. The battery is connected to the core detection circuit board via a battery connection wire.

[0007] The upper part of the cylinder cover has a recessed portion, in which the switch button is embedded.

[0008] The control probe has a built-in probe circuit board, and three stainless steel probes pass through the probe circuit board and the inside of the probe, and are fixed with nuts.

[0009] The core detection circuit board has a Type-C interface on the top, which is embedded in the battery charging port. The battery is fixed on the back, and a high-frequency connector is located at the bottom to connect to the probe circuit board via a signal connection cable.

[0010] The probe is equipped with stainless steel probes of the same length and in greater than one number.

[0011] The battery is connected to the core detection circuit board via a battery connection cable.

[0012] Preferably, the main control module is based on the STM32F405RGT6 series high-performance 32-bit microcontroller.

[0013] Preferably, the core testing circuit board can perform multi-point wireless communication through a wireless communication module to ultimately upload the data to the target server for storage.

[0014] Preferably, the probe is equipped with three 8cm stainless steel probes.

[0015] In summary, the beneficial effects of this invention are:

[0016] 1. The entire sensor structure is compact and small in size, not easily damaged, and causes minimal disturbance to the paddy field soil;

[0017] 2. This sensor is highly waterproof and can be used in rainy weather and paddy field environments;

[0018] 3. When multiple sensors work simultaneously, a wireless transmission network can be automatically established, increasing the data transmission distance;

[0019] 4. The use of high-performance microcontrollers and peripheral devices and the fixed data acquisition cycle ensure that the sensor operates in a low-power sleep state most of the time, extending battery life.

[0020] 5. This sensor can monitor soil moisture and calcium content in both dry and paddy fields, meeting the needs of most rice paddy fields. Attached Figure Description

[0021] Figure 1 This is a three-dimensional schematic diagram illustrating an embodiment of the present invention.

[0022] Figure 2 This is a three-dimensional schematic diagram of each structure of the present invention.

[0023] In the diagram: 1. Cylinder cap; 2. Probe; 3. Stainless steel probe; 4. Battery charging port; 5. Switch button; 6. Core detection circuit board; 7. Battery; 8. Battery connection cable; 9. Main control module; 10. High-frequency connector; 11. Switch connection cable; 12. Probe circuit board; 13. Nut. Detailed Implementation

[0024] Now combined with the appendix Figure 1 —2. The embodiments of the present invention are described in detail, and the present invention is further described in detail.

[0025] A wireless dielectric sensor for detecting calcium content in paddy field soil is used for wirelessly monitoring soil moisture and calcium content data. It includes: a cover 1 and a probe 2; the cover 1 is mounted on the upper end of the probe 2; the cover 1 includes a battery charging port 4 and a switch button 5, and has a core detection circuit board 6 and a battery 7 fixed inside; the probe 2 includes a probe circuit board 12 and three stainless steel probes 3, which pass through the probe circuit board 12 and the interior of the probe 2, and are fixed with nuts 13; the switch button 5 is connected to the core detection circuit board 6 via a switch connection cable 11; the core detection circuit board 6 includes a main control module 9, a signal generation module, and a wireless communication module, and has a high-frequency connector 10 at the bottom; the battery 7 is connected to the core detection circuit board 6 via a battery connection cable 8.

[0026] The upper part of the cylinder cover 1 has a recessed portion, into which the switch button 5 is embedded.

[0027] The control probe 2 has a built-in probe circuit board 12, and three stainless steel probes 3 pass through the probe circuit board 12 and the inside of the probe 2, and are fixed with nuts 13.

[0028] The core detection circuit board 6 has a Type-C interface on the top, which is embedded in the battery charging port 4. A battery 7 is fixed on the rear side, and a high-frequency connector 10 is provided at the bottom to connect to the probe circuit board 12 through a signal connection line.

[0029] The probe 2 is equipped with stainless steel probes 3 of the same length and in greater than one quantity.

[0030] The battery 7 is connected to the core detection circuit board 6 via a battery connection cable 8.

[0031] The steps for using the wireless paddy field soil calcium content dielectric detection sensor are as follows:

[0032] a. Insert the stainless steel probe 3 vertically into the position to be measured;

[0033] b. Continue to adjust the sensor position so that the exposed part of the stainless steel probe 3 is completely buried in the soil, ensuring that the bottom of the probe 2 is at the same level as the surrounding soil. After confirmation, reinforce it.

[0034] c. Turn on the top switch button 5, and the sensor will start working;

[0035] d. Start measuring humidity, then measure calcium content, and feed the detection value back to the main control module 9;

[0036] e. Repeat step d to perform multiple environmental tests to ensure data reliability;

[0037] f, the main control module 9 performs data verification, validity judgment and other algorithms, takes the average value, and sends the paddy field soil moisture and calcium content data to the remote service base station through the wireless communication module;

[0038] g, the sensor enters sleep mode;

[0039] h. Set the sampling interval as needed, and repeat steps d to g to achieve real-time data monitoring.

[0040] In this invention, the sensor operates on the following principle: the sensing circuit module is functionally divided into humidity acquisition and calcium content acquisition. Both humidity and calcium content acquisition utilize three stainless steel probes and a probe circuit board to collect signals from the paddy field soil. The signals are transmitted to the core detection circuit board via signal connection lines, and then undergo AD conversion through a signal detection and conversion circuit. The converted data is processed by the main control chip to output soil moisture and calcium content. Finally, all data is transmitted via a wireless communication module to a remote service base station for processing and display. The sensor supports a measurement temperature range of -20℃ to +70℃, meeting the needs of most application scenarios.

[0041] The embodiments described above with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. For those skilled in the art, modifications and parameter substitutions can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is determined by the appended claims and their equivalents.

Claims

1. A wireless dielectric sensor for detecting calcium content in paddy field soil, used for wirelessly monitoring paddy field soil moisture data and calcium content in paddy field soil, comprising: A cap (1) and a probe (2); the cap (1) is installed on the upper end of the probe (2); the cap (1) includes a battery charging port (4) and a switch button (5), and a core detection circuit board (6) and a battery (7) are fixed inside; the probe (2) includes a probe circuit board (10) and three stainless steel probes (3), the three stainless steel probes (3) pass through the probe circuit board (12) and the inside of the probe (2), and are fixed with nuts (13); the switch button (5) is connected to the core detection circuit board (6) through a switch connection line (11); the core detection circuit board (6) includes a main control module (9), a signal generation module and a wireless communication module, and a high-frequency connector (10) is provided at the bottom; the battery (7) is connected to the core detection circuit board (6) through a battery connection line (8).

2. The wireless paddy field soil calcium content dielectric detection sensor according to claim 1, characterized in that: The upper part of the cylinder cover (1) is provided with a recessed part, and the switch button (5) is embedded therein.

3. The wireless paddy field soil calcium content dielectric detection sensor according to claim 1, characterized in that: The control probe (2) has a built-in probe circuit board (11), and three stainless steel probes (3) pass through the probe circuit board (12) and the inside of the probe (2), and are fixed with nuts (13).

4. The wireless paddy field soil calcium content dielectric detection sensor according to claim 1, characterized in that: The core detection circuit board (6) has a Type-C interface on the top, which is embedded in the battery charging port (4), and a battery (7) is fixed on the rear side. A high-frequency connector (10) is provided at the bottom to connect to the probe circuit board (12) through a signal connection line.

5. The wireless paddy field soil calcium content dielectric detection sensor according to claim 1, characterized in that: The probe (2) is equipped with stainless steel probes (3) of the same length and more than one in number.

6. The wireless paddy field soil calcium content dielectric detection sensor according to claim 1, characterized in that: The battery (7) is connected to the core detection circuit board (6) via a battery connection cable (8).

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