Handheld granary temperature and humidity detection device

Abstract

The handheld granary temperature and humidity detection device comprises a main rod, the two ends of the main rod are connected with an interactive control handle and an extension rod respectively, the other end of the extension rod is connected with a water dropper detector, and an advancing driver is arranged at the tail end in the water dropper detector; a sensor protection cavity is formed in the driving end of the advancing driver, a temperature sensor is arranged in the water dropper detector, a humidity sensor is arranged in the sensor protection cavity, and the interactive control handle is connected with a driving mechanism in the device and controls the water dropper detector to drill into a granary to reach the set depth. And measuring data of the temperature and humidity sensors are collected. The handheld granary temperature and humidity detection device can be driven by hand to stretch out and draw back, the measurement depth of the handheld granary temperature and humidity detection device can be increased when stretching out, the size can be reduced when retracting, and storage is convenient.

Description

Technical Field

[0001] The invention relates to the technical field of grain storage monitoring, and in particular to a handheld grain bin temperature and humidity detection device. Background Art

[0002] During grain storage, temperature and humidity are one of the key factors affecting grain storage. Once improperly managed, it is extremely easy to cause large-scale heating, mildew, pest breeding and other problems in grain. Therefore, accurate and real-time monitoring of temperature and humidity changes in granaries is crucial to ensuring grain quality. However, traditional methods of detecting temperature and humidity in granaries mostly rely on regular manual inspections, which is not only time-consuming and labor-intensive, but also difficult to achieve real-time monitoring of temperature and humidity changes. With the development of science and technology, some automated temperature and humidity monitoring equipment have also appeared on the market, but these devices are often large in size, complex to install, and expensive. They are not suitable for small granaries or home use, are not portable, and are insufficient in accuracy and stability, and cannot meet professional needs. Summary of the invention

[0003] Purpose of the invention: In order to overcome the shortcomings of the background technology, the present invention discloses a handheld grain silo temperature and humidity detection device.

[0004] Technical solution: The handheld granary temperature and humidity detection device disclosed in the present invention includes a main rod, wherein both ends of the main rod are respectively connected to an interactive control handle and an extension rod, the other end of the extension rod is connected to a water droplet detector, a forward drive is provided at the internal tail end of the water droplet detector, a sensor protection cavity is provided at the driving end of the forward drive, a temperature sensor is provided in the water droplet detector, a humidity sensor is provided in the sensor protection cavity, the interactive control handle is connected to the driving mechanism in the device, and controls the water droplet detector to drill into the granary to a set depth to collect measurement data of the temperature and humidity sensors.

[0005] Furthermore, the main rod is a tubular structure with a ball screw disposed inside. The other end of the main rod relative to the interactive control handle is provided with a threaded sealing plug, and the inner wall of the main rod is provided with a wire box for fixing the wires. The sealing plug is provided with a through hole for the extension rod to pass through, and a plurality of guide holes are provided on the periphery of the through hole. A plurality of first guide rods are arranged in parallel on the side of the extension rod, one end of the first guide rod passes through the guide hole, and the other end is connected to the water drop detector.

[0006] Furthermore, the extension rod is a square hollow tube structure that can be sleeved on the outside of the ball screw, one end of which is provided with a ball nut, and the other end is fixed to the water drop head detector. The extension rod passes through the through hole, and the ball nut is provided on the ball screw. As the ball screw rotates, the ball nut drives the extension rod to extend or retract. The first guide rod is parallel to the extension rod, and the end inserted into the main rod is a free end, and the other end is connected to the water drop head detector. The axial end face of the ball nut facing the sealing plug is provided with a buffer pad to prevent collision.

[0007] Furthermore, the sensor protection cavity is formed by a top plate, a bottom plate and two second guide rods therebetween; a connecting tube is provided at the center of the bottom plate; the connecting tube has a hollow structure inside, and a humidity sensor mounting box is installed at the extending end thereof; a humidity sensor is arranged in the humidity sensor mounting box, and the wires of the humidity sensor pass through the connecting tube; a plurality of ceramic desiccant rods are provided at circumferential intervals at the humidity sensor mounting box between the top plate and the bottom plate; annular sealing convex plates are provided on the inner surfaces of the top plate and the bottom plate, and an annular sealing ring is provided on the outer ring of the annular sealing convex plate.

[0008] Furthermore, the water droplet detector is a water droplet-shaped structure with the tip facing the telescopic outer end; A main partition wall is radially provided in the middle of the water drop detector to form a front chamber of the water drop detector and a middle chamber of the water drop detector; the ends of the main partition wall are respectively threadedly connected to the front chamber of the water drop detector and the middle chamber of the water drop detector, and an installation box through hole for the temperature sensor installation box to pass axially and a guide through hole for the second guide rod to pass through are provided on the main partition wall, and a bottom plate annular sealing positioning groove and a top plate annular sealing positioning groove corresponding to the annular sealing convex plate are respectively provided on both sides of the main partition wall, and the sensor protection cavity moves through the main partition wall, and when the annular sealing convex plate and the bottom plate annular sealing positioning groove or the top plate annular sealing positioning groove are closed correspondingly, the sealing of the front chamber of the water drop detector or the middle chamber of the water drop detector is realized; An auxiliary partition wall is radially provided in the inner chamber of the water drop detector to divide it into a rear chamber of the water drop detector. A stepper motor is installed in the rear chamber of the water drop detector through a motor fixing ring. An anti-collision gasket is provided at the position of the auxiliary partition wall corresponding to the bottom plate. An electric heating wire is provided on the inner wall of the water drop detector. After power-on heating, the air in the water drop detector can be quickly dried, ensuring that the humidity sensor quickly returns to a dry state and the accuracy of the measurement data is guaranteed.

[0009] The sensor protection chamber is located in the front room of the water drop detector, and the air humidity here is consistent with the outside. When the annular sealing convex plate on the top plate is closed with the annular sealing positioning groove of the top plate, the sensor protection chamber is located in the middle room of the water drop detector, and the environment here is completely sealed.

[0010] Furthermore, the front chamber of the water drop detector is a hollow conical structure with a plurality of trumpet-shaped air holes that gradually increase in size from the outer wall to the inner wall. A temperature sensor is also provided. The temperature sensor is differentially connected in a Wheatstone bridge manner to accurately detect the temperature inside the granary. The pointed end of the front chamber of the water drop detector is a garbage cavity connected by a connecting thread, and a one-way barrier net is provided at the connection.

[0011] Furthermore, a protective cavity traction fixture is provided at the bottom of the base plate, a screw is provided in the chamber of the water drop detector, the screw is connected to the stepper motor through a coupling, a screw nut is provided on the screw, the screw nut is arranged in the protective cavity traction fixture, sliding guide rails are provided in parallel on the sides of the screw, the base plate is installed on the sliding guide rails, and the protective cavity traction fixture is driven by the stepper motor to drive the base plate to move along the sliding guide rails.

[0012] Furthermore, the interactive control handle is provided with a main rod drive motor inside, which is connected to the ball screw through a coupling encoder, and is also provided with a controller, a wireless transceiver module and a battery. The controller is connected to the main rod drive motor, the stepper motor, the temperature sensor and the humidity sensor. The surface is provided with a touch screen, a panel button, a rotating handle and a handle button. The surface of the interactive control handle is provided with a touch screen, a panel button, a rotating handle and a handle button connected to the controller.

[0013] Beneficial effects: Compared with the prior art, the advantages of the present invention are: it can be hand-held and driven to extend and retract, and the measuring depth of the hand-held grain silo temperature and humidity detection device can be extended when extended, and the volume can be reduced when retracted, which is convenient for storage; the dry and wet air are isolated by the partition setting of the detection room, and the humidity sensor can detect the actual humidity to avoid the influence of the dry environment in other areas, and it can be quickly dried to restore the initial state after detection; the temperature sensor adopts the Wheatstone bridge method for differential connection and accurate measurement, and the trumpet-shaped air vents prevent external grain or debris from entering as much as possible while fully ensuring the consistency of internal and external temperatures. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the radial structure of the protection cavity of the humidity sensor of the present invention; Figure 3 This is a schematic diagram of the axial structure of the protection cavity of the humidity sensor of the present invention; Figure 4 It is a schematic diagram of the structure of the water drop detector device of the present invention; Figure 5 It is a schematic diagram of the structure and coordination of the main partition wall of the present invention; Figure 6 This is a schematic diagram of the front chamber structure of the water drop detector of the present invention; Figure 7 It is a schematic diagram of the structure and coordination of the forward drive of the present invention; Figure 8 It is a schematic diagram of the structure of the interactive control handle of the present invention. DETAILED DESCRIPTION

[0015] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0016] like Figure 1-8 The handheld granary temperature and humidity detection device shown includes a main rod 1, wherein both ends of the main rod 1 are respectively connected to an interactive control handle 9 and an extension rod 2, the other end of the extension rod 2 is connected to a water drop detector 3, a forward drive 8 is provided at the internal tail end of the water drop detector 3, a sensor protection cavity 4 is provided at the driving end of the forward drive 8, a temperature sensor is provided in the water drop detector 3, a humidity sensor is provided in the sensor protection cavity 4, the interactive control handle 9 is connected to the driving mechanism in the device, and controls the water drop detector 3 to drill into the granary to a set depth to collect measurement data of the temperature and humidity sensors.

[0017] The main rod 1 is a tubular structure with a ball screw 12 inside. The other end of the main rod 1 relative to the interactive control handle 9 is provided with a threaded sealing plug 13. The inner wall of the main rod 1 is provided with a wire box 14 for fixing the power lines and data lines for controlling the movement and monitoring of the entire device. The sealing plug 13 is provided with a through hole for the extension rod 2 to pass through, and a plurality of guide holes are provided around the through hole. A plurality of first guide rods 7 are arranged in parallel on the side of the extension rod 2. One end of the first guide rod 7 passes through the guide hole, and the other end is connected to the water drop detector 3.

[0018] The extension rod 2 is a square hollow tube structure that can be sleeved on the outside of the ball screw 12. One end of the extension rod 2 is provided with a ball nut 21, and the other end is fixed to the water drop detector 3. The extension rod 2 passes through the through hole, and the ball nut 21 is provided on the ball screw 12. As the ball screw 12 rotates, the ball nut 21 drives the extension rod 2 to extend or retract. The first guide rod 7 is parallel to the extension rod 2, and the end inserted into the main rod 1 is a free end, and the other end is connected to the water drop detector 3. The ball nut 21 is provided with a buffer pad 11 on the axial end face facing the sealing plug 13 to prevent collision.

[0019] The rotation of the ball screw 12 drives the ball nut 21 on one side of the extension rod 2 to drive the extension rod 2 to move axially along the first guide rod 7. When extended, the measuring depth of the handheld grain silo temperature and humidity detection device can be extended. When retracted, the volume can be reduced for easy storage. The first guide rod 7 can ensure that the movement does not deviate from the direction.

[0020] The sensor protection cavity 4 is formed by a top plate 48, a bottom plate 49 and two second guide rods 44 therebetween. A connecting tube 43 is provided at the center of the bottom plate 49. The connecting tube 43 has a hollow structure inside, and a humidity sensor mounting box 40 is installed at its extending end. A humidity sensor 41 is arranged in the humidity sensor mounting box 40, and the wires of the humidity sensor 41 pass through the connecting tube 43. A plurality of ceramic desiccant rods 42 are provided at circumferential intervals between the top plate 48 and the bottom plate 49 at the humidity sensor mounting box 40. An annular sealing convex plate 45 is provided on the inner surfaces of the top plate 48 and the bottom plate 49, and an annular sealing ring 46 is provided on the outer ring of the annular sealing convex plate 45.

[0021] The water drop detector 3 is a water drop-shaped structure with the tip facing the telescopic outer end; A main partition wall 6 is radially provided in the middle of the water drop detector 3 to form a water drop detector front chamber 5 and a water drop detector middle chamber 31; the ends of the main partition wall 6 are respectively threadedly connected to the water drop detector front chamber 5 and the water drop detector middle chamber 31, and the main partition wall 6 is provided with an installation box through hole for the temperature sensor installation box 40 to pass axially and a guide through hole 62 for the second guide rod 44 to pass through, and the two sides of the main partition wall 6 are respectively provided with a bottom plate annular sealing positioning groove 61 and a top plate annular sealing positioning groove 63 corresponding to the annular sealing convex plate 45, and the sensor protection cavity 4 moves through the main partition wall 6, and when the annular sealing convex plate 45 is closed correspondingly with the bottom plate annular sealing positioning groove 61 or the top plate annular sealing positioning groove 63, the sealing of the water drop detector front chamber 5 or the water drop detector middle chamber 31 is achieved; An auxiliary partition wall 33 is radially provided inside the middle chamber 31 of the water drop detector to divide it into a rear chamber 34 of the water drop detector. A stepper motor 81 is installed in the rear chamber 34 of the water drop detector through a motor fixing ring 36. An anti-collision gasket 35 is provided at a position of the auxiliary partition wall 33 corresponding to the bottom plate 49. An electric heating wire 32 is provided on the inner wall of the middle chamber 31 of the water drop detector.

[0022] The water drop detector front chamber 5 is a hollow conical structure with a plurality of trumpet-shaped air holes 51 which gradually increase in size from the outer wall to the inner wall. A temperature sensor 52 is also provided. The temperature sensor 52 is differentially connected in a Wheatstone bridge manner. The pointed end of the water drop detector front chamber 5 is a garbage chamber 53 connected by a connecting thread 55, and a one-way blocking net 54 is provided at the connection.

[0023] A protective cavity traction fixture 47 is provided at the bottom of the base plate 49, and a screw rod 83 is provided in the middle chamber 31 of the water drop detector. The screw rod 83 is connected to the stepper motor 81 through a coupling 82. A screw nut 85 is provided on the screw rod 83, and the screw nut 85 is arranged in the protective cavity traction fixture 47. Sliding guide rails 84 are arranged in parallel on the side of the screw rod 83. The base plate 49 is installed on the sliding guide rails 84, and the protective cavity traction fixture 47 is driven by the stepper motor 81 to drive the base plate 49 to move along the sliding guide rails 84.

[0024] The interactive control handle 9 is provided with a main rod drive motor 95 inside, connected to the ball screw 12 through a coupling encoder 96, and is also provided with a controller 97, a wireless transceiver module 99 and a battery 98. The controller 97 is connected to the main rod drive motor 95, the stepper motor 81, the temperature sensor 52 and the humidity sensor 41. The surface is provided with a touch screen 91, a panel button 92, a rotating handle 93 and a handle button 94. The surface of the interactive control handle 9 is provided with a touch screen 91, a panel button 92, a rotating handle 93 and a handle button 94 connected to the controller 97, and can set information such as measurement depth, temperature and humidity alarm thresholds, waiting time, and wireless network communication information. The controller 97 receives the measurement information from the temperature sensor 52 and the humidity sensor 41, and converts it into readable information and sends it to the touch screen 91. At the same time, the test data can be transmitted to the mobile phone APP or other cloud platform in real time through the wireless transceiver module 99, and judges whether to alarm according to the threshold limit. By reversing the handle button 94, the water drop head detector 8 can be quickly retracted, which is convenient for the user to use it again. The battery 98 is a plug-in external battery, which is convenient for the device to be charged conveniently.

[0025] As the controller 97 controls the stepper motor 81 to rotate forward, the screw 83 is driven to rotate clockwise, and the screw nut 85 is driven to move axially. Under the traction of the screw nut 85, the protection chamber traction fixture 47 drives the sensor protection chamber 4 to move axially, and then moves forward along the sliding guide rail 84 and enters the front chamber 5 of the water drop detector. The annular sealing convex plate 45 on the upper surface of the bottom plate 49 is completely closed with the bottom plate annular sealing positioning groove 61 on the main partition wall 6, which plays a role in isolating the air. Even if there is residual gas overflowing, the annular sealing ring 46 on the periphery of the annular sealing convex plate 45 can also play a role in sealing and buffering shock absorption. Thereby, it can be ensured that the humidity sensor 41 can detect the real humidity in the front chamber 5 of the water drop detector, avoiding the influence of the dry environment of the water drop detector middle chamber 31.

[0026] As the controller 97 controls the stepper motor 81 to rotate in the opposite direction, the sensor protection chamber 4 returns to the water drop detector middle chamber 31, and the annular sealing convex plate 45 on the lower surface of the top plate 48 is completely closed with the top plate annular sealing positioning groove 63 on the main partition wall 6, ensuring that the water drop detector middle chamber 31 forms a closed space. Under the control of the controller 97, the electric heating wire 32 in the water drop detector middle chamber 31 automatically starts the heating and drying function, quickly dries the humidity sensor 41, and returns it to its initial state, so as to facilitate secondary measurement and use, and also ensure the accuracy of the measurement data and avoid excessive humidity stagnation. In this process, the humid air in the front chamber 5 of the water drop detector cannot enter the water drop detector middle chamber 31 due to the obstruction of the main partition wall 6. The auxiliary partition wall 33 in the water drop detector middle chamber 31 divides the water drop detector middle chamber 31 into a water drop detector rear chamber 34. The stepper motor 81 is installed in a water drop detector rear chamber 34. The dry air in the water drop detector middle chamber 31 will not affect the operation of the stepper motor 81. This structure can ensure that the humidity sensor 41 can quickly return to normal state, ensure measurement accuracy, improve measurement speed, and will not affect other components.

[0027] Once the water drop detector 3 reaches the set position, the controller 97 will automatically collect the temperature information transmitted by the temperature sensor 52 in the water drop detector antechamber 5. In order to improve the measurement accuracy, the temperature sensor 52 shown is differentially connected through the Wheatstone bridge method. The multiple bell-shaped air holes 51 on the water drop detector antechamber 5 can be directly connected to the grain storage environment in the external granary, so the temperature detected by the temperature sensor 52 in the water drop detector antechamber 5 is equal to the grain storage environment temperature in the external granary. And because it is a bell-shaped structure, it can prevent grain from entering the water drop detector antechamber 5 from the bell-shaped structure to the greatest extent. Even if there are traces of small grain particles or dust and impurities entering the water drop detector antechamber 5, these granular impurities or dust will pass through the blocking net 54 and enter the garbage cavity 53. The impurities can also be poured out by manually unscrewing the garbage cavity 53, and the blocking net 54 is designed to be a structure that can enter but not exit, which can prevent these impurities from damaging the sensor.

Claims

1. A handheld granary temperature and humidity detection device, characterized in that: The device comprises a main rod (1), wherein two ends of the main rod (1) are respectively connected to an interactive control handle (9) and an extension rod (2), the other end of the extension rod (2) is connected to a water drop detector (3), a forward drive (8) is provided at the inner tail end of the water drop detector (3), a sensor protection cavity (4) is provided at the driving end of the forward drive (8), a temperature sensor is provided in the water drop detector (3), a humidity sensor is provided in the sensor protection cavity (4), and the interactive control handle (9) is connected to a driving mechanism in the device to control the water drop detector (3) to drill into the granary to a set depth and collect measurement data of the temperature and humidity sensors.

2. The handheld granary temperature and humidity detection device according to claim 1 is characterized in that: The main rod (1) is a tubular structure, and a ball screw (12) is arranged inside the main rod (1). The other end of the main rod (1) relative to the interactive control handle (9) is provided with a threaded sealing plug (13), and the inner wall of the main rod (1) is provided with a wire box (14) for fixing wires. The sealing plug (13) is provided with a through hole for the extension rod (2) to pass through, and a plurality of guide holes are provided on the periphery of the through hole. A plurality of first guide rods (7) are arranged in parallel on the side of the extension rod (2), one end of the first guide rod (7) passes through the guide hole, and the other end is connected to the water drop detector (3).

3. The handheld granary temperature and humidity detection device according to claim 2 is characterized in that: The extension rod (2) is a square hollow tube structure that can be sleeved outside the ball screw (12), one end of which is provided with a ball nut (21), and the other end is fixed to the water drop detector (3). The extension rod (2) passes through the through hole, and the ball nut (21) is provided on the ball screw (12). As the ball screw (12) rotates, the ball nut (21) drives the extension rod (2) to extend or retract. The first guide rod (7) is parallel to the extension rod (2), one end of which is inserted into the main rod (1) is a free end, and the other end is connected to the water drop detector (3). The axial end surface of the ball nut (21) facing the sealing plug (13) is provided with a buffer pad (11) to prevent collision.

4. The handheld granary temperature and humidity detection device according to claim 3 is characterized in that: The sensor protection cavity (4) is formed by a top plate (48), a bottom plate (49) and two second guide rods (44) therebetween. A connecting tube (43) is provided at the center of the bottom plate (49). The connecting tube (43) has a hollow structure inside and a humidity sensor mounting box (40) is installed at its extended end. A humidity sensor (41) is arranged inside the humidity sensor mounting box (40). A lead of the humidity sensor (41) passes through the connecting tube (43). A plurality of ceramic moisture absorbing rods (42) are provided at intervals in the circumferential direction of the humidity sensor mounting box (40) between the top plate (48) and the bottom plate (49). The inner surfaces of the top plate (48) and the bottom plate (49) are both provided with an annular sealing convex plate (45). An annular sealing ring (46) is provided on the outer ring of the annular sealing convex plate (45).

5. The handheld granary temperature and humidity detection device according to claim 4 is characterized in that: The water drop detector (3) is a water drop-shaped structure with the tip pointing toward the telescopic outer end; A main partition wall (6) is radially provided in the middle of the water drop detector (3) to form a water drop detector front chamber (5) and a water drop detector middle chamber (31); the ends of the main partition wall (6) are respectively threadedly connected to the water drop detector front chamber (5) and the water drop detector middle chamber (31); the main partition wall (6) is provided with an installation box through hole for the temperature sensor installation box (40) to pass axially and a guide through hole (62) for the second guide rod (44) to pass through; the two sides of the main partition wall (6) are respectively provided with a bottom plate annular sealing positioning groove (61) and a top plate annular sealing positioning groove (63) corresponding to the annular sealing convex plate (45); the sensor protection chamber (4) moves through the main partition wall (6); when the annular sealing convex plate (45) and the bottom plate annular sealing positioning groove (61) or the top plate annular sealing positioning groove (63) are closed correspondingly, the water drop detector front chamber (5) or the water drop detector middle chamber (31) is sealed; An auxiliary partition wall (33) is radially provided inside the water drop detector middle chamber (31) to divide the middle chamber (31) into a water drop detector rear chamber (34). A stepper motor (81) is installed in the water drop detector rear chamber (34) via a motor fixing ring (36). An anti-collision washer (35) is provided at a position of the auxiliary partition wall (33) corresponding to the bottom plate (49). An electric heating wire (32) is provided on the inner wall of the water drop detector middle chamber (31).

6. The handheld granary temperature and humidity detection device according to claim 5 is characterized in that: The water drop detector front chamber (5) is a hollow conical structure, with a plurality of trumpet-shaped air holes (51) gradually increasing in size from the outer wall to the inner wall, and is also provided with a temperature sensor (52). The temperature sensor (52) is differentially connected in a Wheatstone bridge manner. The tip of the water drop detector front chamber (5) is a garbage cavity (53) connected via a connecting thread (55), and a one-way blocking net (54) is provided at the connection.

7. The handheld granary temperature and humidity detection device according to claim 6 is characterized in that: A protective cavity traction fixture (47) is provided at the bottom of the bottom plate (49), a screw rod (83) is provided in the middle chamber (31) of the water drop detector, the screw rod (83) is connected to the stepper motor (81) via a coupling (82), a screw rod nut (85) is provided on the screw rod (83), the screw rod nut (85) is arranged in the protective cavity traction fixture (47), sliding guide rails (84) are arranged in parallel on the side of the screw rod (83), the bottom plate (49) is installed on the sliding guide rails (84), and the stepper motor (81) drives the protective cavity traction fixture (47) to drive the bottom plate (49) to move along the sliding guide rails (84).

8. The handheld granary temperature and humidity detection device according to claim 7 is characterized in that: The interactive control handle (9) is provided with a main rod drive motor (95) inside, connected to the ball screw (12) via a coupling encoder (96), and is also provided with a controller (97), a wireless transceiver module (99) and a battery (98). The controller (97) is connected to the main rod drive motor (95), the stepper motor (81), the temperature sensor (52) and the humidity sensor (41). The surface is provided with a touch screen (91), a panel button (92), a rotating handle (93) and a handle button (94). The surface of the interactive control handle (9) is provided with a touch screen (91), a panel button (92), a rotating handle (93) and a handle button (94) connected to the controller (97).

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