A hygrothermograph

Abstract

The utility model provides a kind of temperature and humidity recorder, it is related to temperature and humidity recorder technical field, including bottom shell, the inner wall fixed mounting of bottom shell is used to place the mounting seat of circuit board, the mounting seat is fixedly installed with temperature and humidity sensor in the direction of bottom shell detection window one side and bottom shell is slidably installed with piston block in the side close to detection window one side, the inner chamber is opened in the piston block, piston block reciprocating sliding is driven by electric push rod, cooperate the opening and closing of the air hole of plug block, actively discharge the deposition air around sensor, inhale external fresh soil air, realize the forced rapid replacement of air, not rely on slow natural diffusion, solve the problem of air circulation slow from the root.

Description

Technical Field

[0001] This utility model relates to the field of temperature and humidity recorder technology, and in particular to a temperature and humidity recorder. Background Technology

[0002] Temperature and humidity loggers record the temperature and humidity of the environment or soil, facilitating the assessment of environmental or soil ecosystem health and monitoring of the environment or soil environment. Therefore, one existing temperature and humidity logger, publication number CN222850069U, involves removing the cover from the bottom shell during use, then installing a button battery in the button battery holder to power the circuit board, temperature and humidity sensor, processing unit, data storage unit, and data output unit; the cover and bottom shell are fixed relative to each other. Depending on the usage environment, communication with the device is achieved via an external data cable, allowing external host computer software to adjust relevant device information and sampling intervals. Next, waterproof tape is applied to the cover, covering the female connector. The bottom shell is then placed in the desired location in the environment or buried in the soil. The temperature and humidity sensor detects the temperature and humidity in the environment or soil through the monitoring window and sends the data to the processing unit. The processing unit analyzes and processes the environmental or soil temperature and humidity data to obtain processed data, which is then sent to the data storage unit. The data storage unit stores the processed data, thereby achieving the monitoring and recording of environmental or soil temperature and humidity.

[0003] However, in existing technologies, the temperature and humidity sensor and the detection window form a relatively enclosed space. Because there is only one vent in the monitoring window, the internal air circulation is slow. When the air circulation is slow, the temperature and humidity around the sensor cannot be exchanged and updated with the external environment in a timely manner. After the ambient temperature and humidity change, the sensor has to wait for the air in the enclosed space to be gradually replaced before it can detect the change, resulting in data updates lagging behind the actual environment. Utility Model Content

[0004] The purpose of this invention is to solve the problems existing in the prior art by proposing a temperature and humidity recorder.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a temperature and humidity recorder, comprising a bottom shell, a mounting base for placing a circuit board is fixedly installed on the inner wall of the bottom shell, a temperature and humidity sensor is fixedly installed on the side of the mounting base facing the detection window of the bottom shell, and a piston block is slidably installed on the side of the bottom shell near the detection window, an inner cavity is opened in the piston block, a blocking block is slidably installed in the inner cavity, and ventilation holes are opened on both sides of the inner cavity and the surface of the blocking block, a connecting strip parallel to the central axis of the bottom shell and penetrating the surface of the mounting base is fixedly installed on the surface of the piston block, a traction rope is fixedly installed at the center of the top edge of the blocking block, one end of the traction rope passes through the inner wall of the connecting strip and extends to the side of the mounting base away from the detection window, a lever is hinged to the connecting strip on the side of the mounting base away from the piston block by a torsion spring, one swing end of the lever is connected to the end of the traction rope that passes through the connecting strip, a fixing strip is fixedly installed on the mounting base at the sliding path of the other swing end of the lever, the upper surface of the fixing strip is tumbling connected to the other swing end of the lever, the upper surface of the fixing strip is stepped and the vertical edge of the step is set as an inclined edge.

[0006] Preferably, a plurality of electric push rods are fixedly mounted through the surface of the mounting base, and the plurality of electric push rods extend and retract along the central axis of the bottom shell, with the extension and retraction ends of the plurality of electric push rods fixedly connected to the side of the piston block facing the temperature and humidity sensor.

[0007] Preferably, a groove is provided on the upper surface of the fixing strip near the mounting base, an insert is inserted into the inner wall of the groove, and an electric telescopic rod is fixedly installed at the bottom edge of the fixing strip where the groove is located.

[0008] Preferably, a plug is embedded in the stepped inclined edge of the upper surface of the fixing bar, and there are two electric telescopic rods on the bottom edge of the fixing bar, with the other electric telescopic rod used to drive the plug to rise and fall. The upper surface of the plug is rolledly connected to the other end of the lever.

[0009] Preferably, the mounting base has a through hole on its surface and a piston tube communicating with the through hole is fixedly installed on the side of the mounting base facing away from the piston block. One of the electric push rods is located inside the piston tube and a spring is sleeved on its surface. One end of the spring is fixedly connected to the mounting base and the other end of the spring is fixedly installed with a piston plate.

[0010] Preferably, the piston plate is slidably connected to the inner wall of the piston tube, and the piston plate is sleeved on the surface of the electric push rod cylinder located inside the piston tube.

[0011] Preferably, a cover is installed on one end of the bottom shell facing away from the detection window for contacting the piston tube opening. The cover has a perforated surface and the perforation communicates with the inside of the piston tube.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows: 1. In this utility model, the piston block is driven to slide back and forth by an electric push rod. In conjunction with the opening and closing of the vent hole of the block, the deposited air around the sensor is actively discharged and fresh soil air is drawn in from outside, so as to achieve forced and rapid air replacement, rather than relying on slow natural diffusion, thus solving the problem of slow air circulation from the root.

[0013] 2. In this utility model, by setting an insert block, the insert block can be raised to forcibly block the vent hole, and cooperate with the piston block to fit the sensor, so that the sensor is completely isolated from the air, avoiding the sensor from being in contact with the air for a long time during non-detection periods and thus reducing the sensor's ineffective wear and tear and extending its service life. Attached Figure Description

[0014] Figure 1 A three-dimensional structural diagram of a temperature and humidity recorder is provided for this utility model; Figure 2 This utility model proposes a temperature and humidity recorder. Figure 1 A schematic diagram of the cross-sectional structure; Figure 3 This utility model provides a structural schematic diagram of a fixing strip for a temperature and humidity recorder; Figure 4 for Figure 2 Enlarged view of point A in the middle.

[0015] Legend: 1. Bottom shell; 2. Shell cover; 3. Mounting base; 4. Through hole; 5. Electric push rod; 6. Spring; 7. Piston tube; 8. Piston plate; 9. Connecting strip; 10. Fixing strip; 11. Traction rope; 12. Electric telescopic rod; 13. Insert strip; 14. Groove; 15. Lever; 16. Temperature and humidity sensor; 17. Piston block; 18. Block; 19. Inner cavity; 20. Vent hole; 21. Insert block. Detailed Implementation

[0016] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0017] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0018] like Figures 1-4As shown, a temperature and humidity recorder includes a base shell 1. A mounting base 3 for placing a circuit board is fixedly installed on the inner wall of the base shell 1. A temperature and humidity sensor 16 is fixedly installed on the side of the mounting base 3 facing the detection window of the base shell 1. A piston block 17 is slidably installed inside the base shell 1 near the detection window. Several electric push rods 5 are fixedly installed through the surface of the mounting base 3. The electric push rods 5 extend and retract along the central axis of the base shell 1, and their extension ends are fixedly connected to the side of the piston block 17 facing the temperature and humidity sensor 16. In actual use, the piston block 17 can slide inside the base shell 1 by extending and retracting the electric push rods 5. An inner cavity 19 is formed inside the piston block 17. A block 18 is slidably installed inside the inner cavity 19, and vent holes 20 are formed on both sides of the inner cavity 19 and on the surface of the block 18. When the plug 17 moves from the temperature and humidity sensor 16 toward the detection window, the plug 18 rises in the inner cavity 19 to misalign the vent holes 20 on both. The plug 18 blocks the vent on the surface of the inner cavity 19. During the movement of the piston block 17, the air deposited in the bottom shell 1 between the temperature and humidity sensor 16 and the detection window can be discharged. Then, during the reverse movement of the piston block 17, the air in the soil at the burial point of the bottom shell 1 can be directly drawn into the bottom shell 1. Alternatively, after the piston block 17 squeezes out the air in the bottom shell 1, the plug 18 can be lowered again to make the plug 18 coincide with the vent hole 20 on the inner cavity 19, which can also replace the air in the bottom shell 1, thus ensuring that the air detected by the temperature and humidity sensor 16 is the soil air near the burial point of the bottom shell 1. A connecting strip 9, parallel to the central axis of the bottom shell 1 and penetrating the surface of the mounting base 3, is fixedly installed on the surface of the piston block 17. A traction rope 11 is fixedly installed at the center of the top edge of the block 18. One end of the traction rope 11 passes through the inner wall of the connecting strip 9 and extends to the side of the mounting base 3 facing away from the detection window. A lever 15 is hinged to the connecting strip 9 on the side of the mounting base 3 facing away from the piston block 17 via a torsion spring. One swing end of the lever 15 is connected to the end of the traction rope 11 that passes through the connecting strip 9. A fixing strip 10 is fixedly installed on the mounting base 3 at the sliding path of the other swing end of the lever 15. The upper surface of the fixing strip 10 is in a rolling connection with the other swing end of the lever 15. The upper surface of the fixing strip 10 is stepped, and the vertical edge of the step is set as an angle. Figure 2As shown, when the piston block 17 moves to the right inside the bottom shell 1, the connecting strip 9 moves to the right synchronously. During the rightward movement, the left end of the lever 15 slides on the surface of the fixed strip 10. When the other end of the lever 15 passes the inclined side of the fixed strip 10, the lever 15 overcomes the torsion of the torsion spring and swings upward. Therefore, the right end of the lever 15 will swing downward, thereby pulling the traction rope 11 to drive the block 18 to rise. When the lever 15 contacts the top of the inclined side of the fixed strip 10, the lever 15 will not swing due to the plane. That is, the block 18 always remains suspended at this time. The block 18 is misaligned with the vent hole 20 on the inner cavity 19. When the piston block 17 drives the connecting strip 9 to move to the left and reset, when the left end of the lever 15 slides downward from the top of the inclined side of the fixed strip 10, under the action of gravity, the block 18 pulls the traction rope 11 to descend. The traction rope 11 pulls the right end of the lever 15 to swing upward, and under the dual action of the elastic reset of the torsion spring, the left end of the lever 15 swings downward.

[0019] A groove 14 is provided on the upper surface of the fixing strip 10 near the mounting base 3. An insert strip 13 is inserted into the inner wall of the groove 14, and an electric telescopic rod 12 is fixedly installed at the bottom edge of the fixing strip 10 where the groove 14 is located. When the piston block 17 drives the connecting strip 9 to move to the right until it reaches the upper surface of the insert strip 13 at the left end of the lever 15, the corresponding electric telescopic rod 12 can be retracted to lower the insert strip 13. At this time, because the insert strip 13 loses its pushing force on the left end of the lever 15, the blocking block 18 pulls the traction rope 11 under the action of gravity. As the lever 15 descends, the traction rope 11 pulls the right end of the lever 15 upwards, and under the dual action of the torsion spring's elastic return, the left end of the lever 15 descends. This allows the piston block 17 to contact the detection window, thus lowering the blocking block 18. A plug 21 is embedded in the stepped inclined edge of the upper surface of the fixing strip 10. The fixing strip 10 has two electric telescopic rods 12 at its bottom, with the other electric telescopic rod 12 used to drive the plug 21 to rise and fall. The upper surface of the plug 21 is in rolling connection with the other end of the lever 15. Figure 2 As shown, at this time, the block 18 and the vent 20 on the inner cavity 19 coincide. In order to prevent the temperature and humidity sensor 16 from being in contact with air for a long time and being in working condition, the electric telescopic rod 12 on the left side of the fixing bar 10 is extended to raise the insertion block 21. The rise of the insertion block 21 pushes the left end of the lever 15 to be forced to swing upward. Under the action of the lever 15, the traction rope 11 pulls the block 18 up, thus sealing the vent 20 of the inner cavity 19. At this time, the temperature and humidity sensor 16 does not come into contact with air because it is attached to the surface of the piston block 17, thus stopping the temperature and humidity sensor 16 for maintenance.

[0020] The mounting base 3 has a through hole 4 on its surface, and a piston tube 7 communicating with the through hole 4 is fixedly installed on the side of the mounting base 3 facing away from the piston block 17. One of the electric push rods 5 is located inside the piston tube 7 and a spring 6 is fitted on its surface. One end of the spring 6 is fixedly connected to the mounting base 3, and a piston plate 8 is fixedly installed on the other end of the spring 6. The piston plate 8 is slidably connected to the inner wall of the piston tube 7, and the piston plate 8 is fitted on the cylinder surface of the electric push rod 5 located inside the piston tube 7. A cover 2 for abutting against the opening of the piston tube 7 is installed on the side of the bottom shell 1 facing away from the detection window. The surface of the cover 2 is hollowed out, and the hollowed-out part communicates with the inside of the piston tube 7. When the piston block 17 moves to the right, the piston tube 7 is pushed out through the through hole 4. Air is drawn into the temperature and humidity sensor 16 from one side, and during the process, the piston plate 8 inside the piston tube 7 pushes the spring 6 to compress and move to the right inside the piston tube 7. Therefore, when the piston block 17 is in contact with the detection window and the block 18 descends to make the vent 20 of the two coincide, the spring 6 elastically extends to push the piston plate 8 to move to the left and reset inside the piston tube 7. The piston plate 8 can then draw air from outside the detection window into the bottom shell 1 and gather it around the temperature and humidity sensor 16. In addition, in this solution, a desiccant can be placed on the surface of the piston plate 8 or inside the piston tube 7 to dry the air inside the piston tube 7 during the shutdown and maintenance of the temperature and humidity sensor 16, and to prevent the spring 6 from rusting due to moisture.

[0021] The method of using this utility model is as follows: The bottom shell 1 is buried in the target soil location, and the detection window faces the soil environment; the left end of the lever 15 is located at the bottom of the inclined side of the step of the fixed strip 10, the block 18 descends under the action of gravity and torsion spring reset, the inner cavity 19 coincides with the vent 20 of the block 18, and the piston block 17 is close to the temperature and humidity sensor 16.

[0022] Several electric push rods 5 are activated to extend, pushing the piston block 17 to move along the central axis of the bottom shell 1 towards the detection window; the connecting strip 9 moves to the right synchronously with the piston block 17, the left end of the lever 15 slides upward along the inclined edge of the step of the fixed strip 10, and swings upward against the torsion spring torque, the right end of the lever 15 swings downward to pull the traction rope 11, causing the block 18 to rise in the inner cavity 19, so that the inner cavity 19 and the vent hole 20 of the block 18 are misaligned and blocked; in the blocked state, the piston block 17 continues to move to the right, squeezing out the stagnant air deposited between the temperature and humidity sensor 16 and the detection window from the detection window.

[0023] Fresh soil air is drawn in: the electric push rod 5 retracts, pulling the piston block 17 to move in the opposite direction; the left end of the lever 15 slides down along the inclined side of the fixed bar 10, and swings down under the action of gravity and torsion spring reset, while the right end of the lever 15 swings up, causing the traction rope 11 to loosen, and the block 18 descends to allow the vent 20 to re-align; the piston block 17 moves to the left to create negative pressure, directly drawing the soil air near the burial point of the bottom shell 1 into the bottom shell 1, where it comes into full contact with the temperature and humidity sensor 16, which detects the temperature and humidity data of the fresh air in real time.

[0024] Cyclic update: Repeat the action of piston block 17 moving right to expel old air and moving left to draw in new air, continuously replacing the air around the sensor to ensure that the detection data is synchronized with the external environment.

[0025] The wiring diagrams of the temperature and humidity sensor 16, electric push rod 5, and electric telescopic rod 12 in this utility model are common knowledge in the field. Their working principles are known technologies. The appropriate model is selected according to actual use. Therefore, the control method and wiring layout of the temperature and humidity sensor 16, electric push rod 5, and electric telescopic rod 12 will not be explained in detail.

[0026] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A temperature and humidity recorder, comprising a bottom shell (1), characterized in that: A mounting base (3) for placing a circuit board is fixedly installed on the inner wall of the bottom shell (1). A temperature and humidity sensor (16) is fixedly installed on the side of the mounting base (3) facing the detection window of the bottom shell (1), and a piston block (17) is slidably installed on the side of the bottom shell (1) near the detection window. An inner cavity (19) is opened in the piston block (17), and a block (18) is slidably installed in the inner cavity (19). Ventilation holes (20) are opened on both sides of the inner cavity (19) and on the surface of the block (18). A connecting strip (9) parallel to the central axis of the bottom shell (1) and penetrating the surface of the mounting base (3) is fixedly installed on the surface of the piston block (17). The center of the top edge of the block (18) is fixedly... A traction rope (11) is fixedly installed. One end of the traction rope (11) passes through the inner wall of the connecting strip (9) and extends to the side of the mounting base (3) facing away from the detection window. The connecting strip (9) is located on the side of the mounting base (3) facing away from the piston block (17) and is hinged to a lever (15) by a torsion spring. One swing end of the lever (15) is connected to the traction rope (11) through one end of the connecting strip (9). The mounting base (3) is fixedly installed with a fixing strip (10) at the sliding path of the other swing end of the lever (15). The upper surface of the fixing strip (10) is rolledly connected to the other swing end of the lever (15). The upper surface of the fixing strip (10) is stepped and the vertical side of the step is set as an inclined side.

2. The temperature and humidity recorder according to claim 1, characterized in that: A number of electric push rods (5) are fixedly installed through the surface of the mounting base (3). The electric push rods (5) extend and retract along the central axis of the bottom shell (1), and the extension and retraction ends of the electric push rods (5) are fixedly connected to the side of the piston block (17) facing the temperature and humidity sensor (16).

3. The temperature and humidity recorder according to claim 1, characterized in that: A groove (14) is provided on the upper surface of the fixing strip (10) near the mounting base (3). An insert (13) is inserted into the inner wall of the groove (14), and an electric telescopic rod (12) is fixedly installed at the bottom edge of the fixing strip (10) where the groove (14) is located.

4. The temperature and humidity recorder according to claim 3, characterized in that: The upper surface of the fixing bar (10) has a stepped inclined edge in which a plug (21) is embedded. The bottom edge of the fixing bar (10) has two electric telescopic rods (12), and the other electric telescopic rod (12) is used to drive the plug (21) to rise and fall. The upper surface of the plug (21) is rolledly connected to the other end of the lever (15).

5. The temperature and humidity recorder according to claim 1, characterized in that: The mounting base (3) has a through hole (4) on its surface and a piston tube (7) connected to the through hole (4) is fixedly installed on the side of the mounting base (3) facing away from the piston block (17). One of the electric push rods (5) is located inside the piston tube (7) and a spring (6) is sleeved on its surface. One end of the spring (6) is fixedly connected to the mounting base (3) and the other end of the spring (6) is fixedly installed with a piston plate (8).

6. The temperature and humidity recorder according to claim 5, characterized in that: The piston plate (8) is slidably connected to the inner wall of the piston tube (7), and the piston plate (8) is sleeved on the cylinder surface of the electric push rod (5) located inside the piston tube (7).

7. The temperature and humidity recorder according to claim 1, characterized in that: The bottom shell (1) is equipped with a cover (2) for contacting the opening of the piston tube (7) at one end facing away from the detection window. The cover (2) has a hollowed-out surface and the hollowed-out part is connected to the inside of the piston tube (7).

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