Seed germination and root length measuring instrument with scale positioning

Abstract

The utility model discloses a seed germination root length measuring instrument with scale positioning, including operation platform, still including measurement subassembly, limit switch subassembly, clamping subassembly, the upper end of operation platform is provided with measurement subassembly, the both sides of measurement subassembly's lower extreme all are provided with limit switch subassembly, one side of measurement subassembly is provided with clamping subassembly, measurement subassembly includes scale board, the utility model discloses through the clamp and hold germination root stem, and the other end of germination root stem passes through the positioning groove and places on the scale line of scale board, afterwards linear motor drives linear push rod to elongate, make scale board one end close to clamp and hold close to clamp, when scale board is close to the end of clamp and hold, when one of micro -switch body is because trigger gyro is pressed down by scale board and drives lever to touch switch, then control linear motor stops working to realize the positioning of scale board, and then realize the accurate positioning of the interval of scale board and clamp and hold, thereby improve the measurement precision of germination root stem.

Description

Technical Field

[0001] This utility model relates to the field of seed germination measurement technology, specifically a seed germination root length measuring instrument with graduated positioning. Background Technology

[0002] In the fields of agricultural breeding, plant physiology research, and crop cultivation management, seed germination root length is a core indicator for assessing seed vigor, growth potential, and environmental adaptability. Its accurate measurement is of great significance for screening superior varieties and optimizing planting conditions. As modern agriculture develops towards precision and digitalization, seed germination detection has shifted from traditional manual estimation to quantitative measurement, which has promoted the research and development of root length measurement technology. Currently, in addition to digital measurement technologies such as image recognition, seed germination root length measuring rulers remain a commonly used measurement tool in laboratories and grassroots agricultural scenarios due to their low cost and ease of operation.

[0003] The measuring ruler lacks a suitable clamping structure, which can easily damage the rootstock or cause it to slip when clamped, making it difficult to stably position the starting and ending points of the measurement. On the other hand, the rootstock is prone to natural bending due to environmental factors, and the measuring ruler uses a linear scale design, which cannot fit the curved trunk contour. The rootstock needs to be straightened manually during measurement, which not only easily damages its physiological structure, but also causes measurement errors due to different degrees of stretching. Utility Model Content

[0004] The purpose of this invention is to provide a seed germination root length measuring instrument with graduated positioning. It has the advantages of stable clamping of germinating seed roots and stems, accurate measurement, and convenient loading and unloading of materials. It solves the problem of existing seed germination root length measuring rulers, which are difficult to accurately measure the length of germinating roots and stems due to the difficulty in clamping and positioning the roots and stems of germinating seeds and their curved trunks.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A seed germination root length measuring instrument with graduated positioning includes an operating table, a measuring component, a limit switch component, and a clamping component. The measuring component is located at the upper end of the operating table; limit switch components are located on both sides of the lower end of the measuring component; a clamping component is located on one side of the measuring component; the measuring component includes a scale plate; the limit switch component includes a micro switch body; the clamping component includes a base; a slide rail is located at the lower end of the scale plate and is fixedly connected to the scale plate; a linear push rod and a base are respectively located on both sides of the scale plate; one end of the linear push rod is fixedly connected to the scale plate; a linear motor is located at the other end of the linear push rod; a clamping sleeve is located at the upper end of the base; a clamp is located inside the clamping sleeve; and micro switch bodies are located on both sides of the lower end of the scale plate.

[0007] Preferably, the upper surface of the scale plate is provided with a measuring scale, and the measuring scale is integrally formed with the scale plate; both sides of the upper end of the scale plate are provided with positioning grooves, and the positioning grooves are integrally formed with the scale plate.

[0008] It is worth noting that the positioning groove is used to allow the trunk of the sprouting rhizome to pass through and be limited, preventing the sprouting rhizome from bending and affecting the measurement results.

[0009] Preferably, the lower end of the slide rail is provided with a slide rail sleeve, and the slide rail sleeve is slidably connected along the slide rail.

[0010] It is worth noting that the output of the linear motor drives the linear push rod to move and adjust the scale plate and slide rail along the inner wall of the slide rail sleeve.

[0011] Preferably, a lever is provided at the upper end of the micro switch body; a trigger roller is provided above one end of the lever, and the trigger roller is rotatably connected to one end of the lever, and one end of the lever is connected to the switch of the micro switch body.

[0012] It is worth noting that when the trigger roller is subjected to downward pressure, it triggers the rotation of the lever. The rotation of the lever causes the other end of the lever to trigger the micro switch body. Then, the movement point of the scale plate is determined according to the opening and closing status of the micro switch body, and the linear motor is limited to drive the scale plate to achieve the positioning function of the scale plate. The delay is low and the accuracy is high.

[0013] Preferably, the output end of the linear motor is connected to the linear push rod drive.

[0014] It is worth noting that the output of the linear motor drives the linear push rod to move and adjust the scale plate and slide rail along the inner wall of the slide rail sleeve.

[0015] Preferably, the micro switch body is electrically connected to the operating table; the linear motor is electrically connected to the operating table.

[0016] It is worth noting that two microswitches are used to detect the movement of the scale plate, and the linear motor is stopped when the open and close signals of the two microswitches are triggered.

[0017] Preferably, the clamps are controlled to open and close via a bolt thread connection.

[0018] It is worth noting that the clamps achieve their function of holding the root end of the germinated seed by tightening the bolt threads.

[0019] Preferably, the base and the operating table are fixedly connected by bolts.

[0020] It is worth noting that the base is used to secure the clamp sleeve and the clamp.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0022] This invention uses clamps to hold sprouting rhizomes. The other end of the sprouting rhizome passes through a positioning groove and is placed on the scale line of a graduated plate. Then, a linear motor drives a linear push rod to extend, causing the end of the graduated plate near the clamp to move closer to the clamp. When the graduated plate is close to the end of the clamp, the limit switch assemblies on both sides below the graduated plate are in the open and closed states, respectively. When one of the microswitches is triggered by the roller being pressed down by the graduated plate and the lever being activated, the linear motor stops working, thereby achieving the positioning of the graduated plate and accurately positioning the distance between the graduated plate and the clamp. This improves the measurement accuracy of the sprouting rhizome and also improves the convenience of clamping and positioning one end of the sprouting rhizome. It prevents the graduated plate from being too close to the clamp and obstructing the material clamping operation, thus improving the convenience of the measurement operation.

[0023] The positioning groove is designed to allow the stem of the sprouting rhizome to pass through and be limited, preventing the sprouting rhizome from bending and affecting the measurement results. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the overall rear view structure of this utility model;

[0026] Figure 3 This is a rear view schematic diagram of the measuring component of this utility model;

[0027] Figure 4 This is a schematic diagram of the limit switch assembly structure of this utility model;

[0028] Figure 5 This is a schematic diagram of the clamping component structure of this utility model.

[0029] Figure label:

[0030] 1. Operating table; 2. Measuring component; 3. Limit switch component; 4. Clamping component; 201. Scale plate; 202. Slide rail; 203. Slide rail sleeve; 204. Positioning groove; 205. Linear push rod; 206. Linear motor; 301. Micro switch body; 302. Lever; 303. Trigger roller; 401. Base; 402. Clamp; 403. Clamp sleeve. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Precise measurement of root length during seed germination is a crucial foundational task in agricultural breeding, plant physiology research, and crop cultivation management. Root length, as an important indicator reflecting seed vigor, growth status, and environmental adaptability, directly impacts the reliability of variety selection, cultivation program optimization, and growth mechanism analysis. Currently, the mainstream tools for measuring root length during seed germination are still primarily traditional measuring rulers, including straightedges, vernier calipers, and specialized graduated measuring plates. However, in practice, due to the inherent biological characteristics of germinating seed roots and stems—such as their tenderness, fragility, irregular shape, and tendency to bend—traditional measuring rulers generally face two major problems: difficulty in clamping and positioning the root and stem, and measurement deviations caused by root bending. These issues severely restrict measurement accuracy and efficiency. The error rate is high when measuring bent roots and stems with traditional measuring rulers, and the damage rate to some delicate roots and stems due to improper clamping is also relatively high. This not only affects the scientific validity of experimental data but may also lead to sample waste and increased research costs. Therefore, a thorough analysis of the technical shortcomings of existing measuring rulers and the exploration of targeted improvement solutions are of great practical significance for improving the accuracy and practicality of seed germination root length measurement.

[0033] The germinating root diameter of some gramineous crops is extremely small, while that of some dicotyledonous crops is significantly larger. The clamping mechanism cannot achieve a tight fit between roots and stems of different diameters, and is prone to loosening. During measurement, even slight touches or airflow disturbances can cause the root position to shift, requiring repeated adjustments. This not only reduces measurement efficiency but may also cause physical damage to the tender roots and stems due to repeated adjustments.

[0034] Traditional measuring rulers are based on linear scales, requiring the object being measured to be in a straight line. However, during seed germination, the rootstock is easily curved due to factors such as growth space, gravity, and resistance from the growing medium, forming natural curves such as arcs, S-shapes, or spirals. During measurement, operators must either forcibly straighten the curved rootstock or measure it in segments along the curve and then accumulate the measurements. The former may cause the rootstock to stretch and deform, damaging cell structure and resulting in a measurement value greater than the actual length; the latter requires multiple determinations of the starting and ending points, leading to significant subjective errors, and the slight curvature can easily be overlooked during segmented accumulation, resulting in an underestimation of the measured value.

[0035] Existing measuring rulers typically have a narrow clamping area, and the graduation marks are too close to the clamping structure. During measurement, the operator's hand can easily obstruct their view, making it difficult to accurately determine whether the rootstock is completely aligned with the graduation lines, and also making it impossible to clearly observe whether there is any damage to the clamping area. In addition, some measuring rulers are designed to be compact in pursuit of portability, resulting in limited operating space and making it difficult to separate and individually locate multiple rootlets, further exacerbating the positioning difficulties.

[0036] To address the problem of inaccurate measurement of root length in seed germination measuring rulers due to difficulties in clamping and positioning the rootstock of germinating seeds and the bending of the rootstock, the following technical solution is proposed. Please refer to [link / reference]. Figure 1-5 ;

[0037] A seed germination root length measuring instrument with graduated positioning includes an operating table 1, a measuring component 2, a limit switch component 3, and a clamping component 4. The measuring component 2 is located at the upper end of the operating table 1; limit switch components 3 are located on both sides of the lower end of the measuring component 2; and a clamping component 4 is located on one side of the measuring component 2. The measuring component 2 includes a scale plate 201; the limit switch component 3 includes a micro switch body 301; and the clamping component 4 includes a base 401. The lower end of the scale plate 201... The scale plate 201 is fixedly connected to a slide rail 202 at one end; a linear push rod 205 and a base 401 are respectively provided on both sides of the scale plate 201; one end of the linear push rod 205 is fixedly connected to the scale plate 201; a linear motor 206 is provided at the other end of the linear push rod 205; a clamp sleeve 403 is provided at the upper end of the base 401; a clamp 402 is provided inside the clamp sleeve 403; and micro switch bodies 301 are provided on both sides of the lower end of the scale plate 201.

[0038] The upper surface of the scale plate 201 is provided with a measuring scale, and the measuring scale is integrally formed with the scale plate 201; both sides of the upper end of the scale plate 201 are provided with positioning grooves 204, and the positioning grooves 204 are integrally formed with the scale plate 201.

[0039] The lower end of the slide rail 202 is provided with a slide rail sleeve 203, and the slide rail sleeve 203 is slidably connected along the slide rail 202.

[0040] A lever 302 is provided at the upper end of the micro switch body 301; a trigger roller 303 is provided above one end of the lever 302, and the trigger roller 303 is rotatably connected to one end of the lever 302, and one end of the lever 302 is connected to the switch of the micro switch body 301.

[0041] The output end of the linear motor 206 is connected to the linear push rod 205 for transmission.

[0042] The micro switch body 301 is electrically connected to the control panel 1; the linear motor 206 is electrically connected to the control panel 1.

[0043] The clamp 402 controls the opening and closing of the clamping action through a bolt thread connection.

[0044] The base 401 is fixedly connected to the operating table 1 by bolts.

[0045] Working principle: The sprouting rhizome is clamped by clamp 402, and the other end of the sprouting rhizome passes through the positioning groove 204 and is placed on the scale line of the scale plate 201. Then, the linear motor 206 drives the linear push rod 205 to extend, so that the end of the scale plate 201 near the clamp 402 moves closer to the clamp 402. When the scale plate 201 is close to the end of the clamp 402, the limit switch assemblies 3 on both sides below the scale plate 201 are in the open and closed states respectively. When one of the micro switch bodies 301 is pressed down by the scale plate 201 due to the trigger roller 303, it drives the lever. When lever 302 triggers the switch, it controls the linear motor 206 to stop working, thereby positioning the scale plate 201 and accurately positioning the distance between the scale plate 201 and the clamp 402. This improves the measurement accuracy of the sprouting root and improves the convenience of clamping and positioning one end of the sprouting root with the clamp 402, preventing the scale plate 201 and the clamp 402 from being too close and obstructing the clamping operation of the material, thus improving the convenience of the measurement operation. The positioning groove 204 is used to allow the trunk of the sprouting root to pass through and limit it, preventing the sprouting root from bending and affecting the measurement results.

[0046] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0047] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A seed germination root length measuring instrument with graduated positioning, comprising an operating table (1), characterized in that, It also includes a measuring component (2), a limit switch component (3), and a clamping component (4). The measuring component (2) is provided at the upper end of the operating table (1); the limit switch components (3) are provided on both sides of the lower end of the measuring component (2); the clamping component (4) is provided on one side of the measuring component (2); the measuring component (2) includes a scale plate (201); the limit switch component (3) includes a micro switch body (301); the clamping component (4) includes a base (401); and a slide rail (202) is provided at the lower end of the scale plate (201). The slide rail (202) is fixedly connected to the scale plate (201); a linear push rod (205) and a base (401) are respectively provided on both sides of the scale plate (201); one end of the linear push rod (205) is fixedly connected to the scale plate (201); a linear motor (206) is provided at the other end of the linear push rod (205); a clamp sleeve (403) is provided at the upper end of the base (401); a clamp (402) is provided inside the clamp sleeve (403); and micro switch bodies (301) are provided on both sides of the lower end of the scale plate (201).

2. The seed germination root length measuring instrument with graduated positioning according to claim 1, characterized in that, The upper surface of the scale plate (201) is provided with a measuring scale, and the measuring scale is integrally formed with the scale plate (201); both sides of the upper end of the scale plate (201) are provided with positioning grooves (204), and the positioning grooves (204) are integrally formed with the scale plate (201).

3. The seed germination root length measuring instrument with graduated positioning according to claim 1, characterized in that, The lower end of the slide rail (202) is provided with a slide rail sleeve (203), and the slide rail sleeve (203) is slidably connected along the slide rail (202).

4. A seed germination root length measuring instrument with graduated positioning according to claim 1, characterized in that, A lever (302) is provided at the upper end of the micro switch body (301); a trigger roller (303) is provided above one end of the lever (302), and the trigger roller (303) is rotatably connected to one end of the lever (302), and one end of the lever (302) is connected to the switch of the micro switch body (301).

5. A seed germination root length measuring instrument with graduated positioning according to claim 1, characterized in that, The output end of the linear motor (206) is connected to the linear push rod (205) for transmission.

6. A seed germination root length measuring instrument with graduated positioning according to claim 1, characterized in that, The micro switch body (301) is electrically connected to the operating table (1); the linear motor (206) is electrically connected to the operating table (1).

7. A seed germination root length measuring instrument with graduated positioning according to claim 1, characterized in that, The clamp (402) controls the opening and closing of the clamping action via a bolt thread connection.

8. A seed germination root length measuring instrument with graduated positioning according to claim 1, characterized in that, The base (401) and the operating table (1) are fixedly connected by bolts.

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