Automatic fixed-point detection device for soil moisture content

Abstract

The utility model provides an automatic fixed-point detection device based on soil moisture content. The automatic fixed-point detection device comprises a humidity sensor, a reciprocating soil inserting mechanism, a stepping motor, a spring device, an aluminum profile, a linear guide rail, a linear guide rail sliding block and a linear guide rail fixing block. According to the utility model, a mode of simultaneously carrying out measurement and automatic adjustment is adopted, so that the time cost and the operation intensity can be effectively reduced, the moisture content detection device can detect the moisture content of soil at a fixed point according to a direct insertion type sensor on the device, and then the whole measurement device is brought back to the next measurement point by the automatic return device through the sliding rail, so that the measurement efficiency is improved. And multi-point adaptive measurement is realized.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery and equipment technology, specifically to an automatic fixed-point detection device for soil moisture content, which measures soil moisture content. Background Technology

[0002] Soil moisture content directly impacts crop emergence rate and yield. If the moisture content is too low, the soil is prone to water loss and drought, leading to weak seedlings. Conversely, if the moisture content is too high, the crop's oxygen requirements may not be met, affecting emergence rate and potentially causing seedling death due to waterlogging. Currently, soil moisture content is measured primarily through manual overall measurement and single-point measurement using large equipment. Manual overall measurement involves frequent operations, lacks accuracy, and is prone to errors, resulting in excessively high or low moisture content that affects crop emergence and yield. While single-point measurement using large equipment is accurate under my country's rotary tillage and sowing methods, it remains insufficiently precise for large-scale farmland and faces significant challenges in widespread adoption. Therefore, a key issue urgently needs to be addressed: developing a machine-controlled soil moisture measurement device that can perform multi-point soil measurement during operation with high accuracy and precise point control. Utility Model Content

[0003] In view of the problems in related technologies, this utility model proposes an automatic fixed-point detection device for soil moisture content to overcome the above-mentioned technical problems existing in the existing related technologies.

[0004] The purpose of this utility model can be achieved by adopting the following technical solution: an automatic fixed-point detection device for soil moisture content, including a humidity sensor, a reciprocating soil insertion mechanism, a stepper motor, a spring device, an aluminum profile, a linear guide rail, a linear guide rail slider, and a linear guide rail fixing block;

[0005] The reciprocating soil insertion mechanism includes a sensor fixing block, a disc cam, and an annular guide rod. The humidity sensor is installed in the sensor fixing block, and the reciprocating soil insertion mechanism is fixed to one end of the linear guide slider.

[0006] A stepper motor is fixed to one side of the reciprocating soil insertion mechanism and perpendicular to the linear guide rail. The reciprocating soil insertion mechanism moves the humidity sensor up and down by rotating the stepper motor. A spring device is fixed to the right side of the aluminum profile. The measuring tape end of the spring device is fixed to one side of the reciprocating soil insertion mechanism along the direction of the linear guide rail. The linear guide rail is in the opposite direction to the humidity sensor and is fixed to the aluminum profile. The linear guide rail slider is installed on the linear guide rail. The linear guide rail fixing block is fixed to one end of the linear guide rail and in the opposite direction to the spring device. The reciprocating soil insertion mechanism moves back and forth left and right by the spring device, the linear guide rail, and the linear guide rail slider.

[0007] Furthermore, the ring guide rod and humidity sensor move up and down back and forth as the stepper motor rotates; the stepper motor drives the disc cam to the lower stop point, and the humidity sensor is inserted into the soil; the stepper motor drives the disc cam to the upper stop point, and the humidity sensor is pulled out of the soil.

[0008] Furthermore, the reciprocating soil insertion mechanism moves left and right as the humidity sensor is inserted into the soil. As the entire device moves forward, the reciprocating soil insertion mechanism moves backward, and the humidity sensor is pulled out of the soil. The reciprocating soil insertion mechanism moves back and forth with the spring device.

[0009] Furthermore, the spring device includes a measuring tape spring.

[0010] Furthermore, the aluminum profile material is 2020 aluminum profile.

[0011] The beneficial effects of this utility model are: based on a soil moisture content measuring device that is automatically controlled by a machine, it can still perform multi-point fixed-point soil measurement during operation, with high measurement accuracy, accurate point control, and improved efficiency. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of the soil moisture content testing device.

[0013] Figure 2 This is a schematic diagram of the reciprocating soil insertion mechanism of this utility model.

[0014] Figure 3 This is a schematic diagram of the guide rail device of this utility model. Detailed Implementation

[0015] This utility model is mainly used for automatic fixed-point detection of soil moisture content. Based on the structure provided by this utility model, the following will be combined with... Figures 1-3 The working principle of the automatic fixed-point detection device for soil moisture content of this utility model will be further explained.

[0016] Reference numerals: spring device (1), measuring tape spring (2), reciprocating soil insertion mechanism (3), stepper motor (4), linear guide rail (5), aluminum profile (6), linear guide rail fixing block (7), humidity sensor (8), sensor fixing block (9), annular guide rod (10), disc cam (11), housing (12), and linear guide rail slider (13).

[0017] See Figure 1The humidity sensor (8) is installed in the reciprocating soil insertion mechanism (3). The reciprocating soil insertion mechanism (3) is fixed on the upper end of the linear guide slider. The stepper motor (4) is fixed on the rear end of the reciprocating soil insertion mechanism (3). The reciprocating soil insertion mechanism (3) realizes the rapid up and down movement of the humidity sensor through the rotation of the stepper motor (4). The spring device (1) is fixed on the right side of the aluminum profile (6). The measuring tape end of the spring device (1) is fixed on the right side of the reciprocating soil insertion mechanism (3) along the direction of the linear guide. The linear guide (5) is fixed on the upper end of the aluminum profile (6). The linear guide fixing block (7) is fixed on one end of the linear guide (5) and in the opposite direction to the spring device.

[0018] The humidity sensor (8) is a capacitive sensor. By inserting the sensor probe into the soil, waiting for 0.5 seconds, reading the humidity value, and then pulling the probe out, it is inserted into the soil again in the next instant, thereby achieving the effect of reading the real-time measurement of soil humidity value under motion.

[0019] See Figures 2-3 The reciprocating soil insertion mechanism (3) includes a disc cam (11), an annular guide rod (10), and a housing (12). The disc cam (13) has a hole at its rear end with a diameter equal to that of the stepper motor (4) shaft. The stepper motor (4) shaft is inserted into the circular hole of the disc cam (13). The disc cam (13) is engaged with the annular groove of the annular guide rod (10). The housing (12) has small circular holes at its upper and lower ends that are slightly larger than those of the annular guide rod (10). The annular guide rod (10) is installed in the small circular hole of the housing (12). The reciprocating soil insertion mechanism (3) converts the rotation of the disc cam (11) into the reciprocating up-and-down movement of the annular guide rod (10) through the cooperation of the disc cam (11) and the annular guide rod (10). The linear guide rail (5), the linear guide rail slider (13), and the spring device (1) ensure that the measuring point remains stationary during the machine's movement, so as to accurately process and realize the reciprocating linear motion.

[0020] The detection performance of the soil moisture content detection device was tested, and the moisture content measured during movement was correctly obtained, indicating that the soil moisture content detection device has good detection performance.

[0021] The above description is merely a preferred embodiment of this utility model. The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be covered within the protection scope of this utility model.

Claims

1. An automatic fixed-point detection device for soil moisture content, characterized in that: Includes a humidity sensor, a reciprocating soil insertion mechanism, a stepper motor, a spring device, aluminum profiles, linear guides, linear guide sliders, and linear guide fixing blocks; The reciprocating soil insertion mechanism includes a sensor fixing block, a disc cam, and an annular guide rod. The humidity sensor is installed in the sensor fixing block, and the reciprocating soil insertion mechanism is fixed to one end of the linear guide rail slider. The stepper motor is fixed to one side of the reciprocating soil insertion mechanism and is perpendicular to the linear guide rail. The reciprocating soil insertion mechanism moves the humidity sensor up and down by rotating the stepper motor. The spring device is fixed to the right side of the aluminum profile. The measuring tape end of the spring device is fixed to one side of the reciprocating soil insertion mechanism along the direction of the linear guide rail. The linear guide rail is in the opposite direction to the humidity sensor and is fixed to the aluminum profile. The linear guide rail slider is installed on the linear guide rail. The linear guide rail fixing block is fixed to one end of the linear guide rail and in the opposite direction to the spring device. The reciprocating soil insertion mechanism moves left and right back and forth through the spring device, the linear guide rail, and the linear guide rail slider.

2. The automatic fixed-point detection device for soil moisture content according to claim 1, characterized in that: The ring-shaped guide rod and humidity sensor move up and down back and forth as the stepper motor rotates; the stepper motor drives the disc cam to the lower stop point, and the humidity sensor is inserted into the soil; the stepper motor drives the disc cam to the upper stop point, and the humidity sensor is pulled out of the soil.

3. The automatic fixed-point detection device for soil moisture content according to claim 1, characterized in that: The reciprocating soil insertion mechanism moves left and right as the humidity sensor is inserted into the soil. As the entire device moves forward, the reciprocating soil insertion mechanism moves backward. When the humidity sensor is pulled out of the soil, the reciprocating soil insertion mechanism moves back and forth with the spring device.

4. The automatic fixed-point detection device for soil moisture content according to claim 1, characterized in that: The spring device includes a measuring tape spring.

5. The automatic fixed-point detection device for soil moisture content according to claim 1, characterized in that: The aluminum profile material is 2020 aluminum profile.

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