An IoT-based probe-embedded temperature sensor

Abstract

This invention discloses an IoT-based built-in temperature sensor, comprising a housing on which a sensor probe is mounted, and a probe sleeve fixedly connected to the outer side of the housing. The housing has an exhaust port, and a fan shroud is fixedly connected to the inner side of the housing. The exhaust port is located inside the fan shroud and communicates with the inner cavity of the probe sleeve. An exhaust tube is fixedly connected inside the housing, and an exhaust motor is installed inside the exhaust tube. Fan blades are fixedly connected to the shaft of the exhaust motor. An exhaust pipe is connected to the air inlet end of the exhaust tube, and an exhaust pipe is connected to the air outlet end of the exhaust tube. The end of the exhaust pipe furthest from the exhaust tube faces the processor circuit board. A vent is provided on the top of the housing, connecting the inner cavity of the housing to the outer side. This invention can maintain the temperature detected by the sensor probe consistent with the external ambient temperature, ensuring that the measured temperature accurately reflects the temperature of the ambient air.

Description

Technical Field

[0001] This invention relates to the field of Internet of Things (IoT) sensor technology, and more specifically to an IoT-based probe-embedded temperature sensor. Background Technology

[0002] With rapid societal development, the demands for building intelligence are increasing. Building intelligence requires various sensors to collect information on the building's operational status, which is then managed and controlled by a comprehensive control system. In building temperature control systems, temperature sensors are needed to collect temperature information within the building. With the development of the Internet of Things (IoT), IoT temperature sensors are commonly used. These sensors collect temperature data from the probe, and the digital signals collected are processed by the sensor's signal processing unit to obtain the corresponding temperature information network transmission signal. This network signal is then transmitted to the control system via an information transmission module, ensuring that the control system receives numerical information directly reflecting the temperature value.

[0003] Built-in temperature sensors are a type of IoT temperature sensor. Their sensor probe is mounted on a housing, forming an integrated structure. The probe detects the temperature around the housing. However, because the probe is mounted on the housing, the temperature on the housing is easily transferred to the sensor through heat conduction. This causes the temperature detected by the sensor to not match the ambient air temperature, resulting in an inaccurate reflection of the ambient air temperature. Summary of the Invention

[0004] The purpose of this invention is to solve the above-mentioned technical problems and provide a probe-embedded temperature sensor based on the Internet of Things.

[0005] To achieve the above objectives, the present invention employs the following technical solution:

[0006] An IoT-based probe-embedded temperature sensor includes a housing, on which a sensor probe is mounted. A probe sleeve is fixedly connected to the outer side of the housing. A ventilation slot is provided on the side wall of the probe sleeve. The sensor probe is located in the inner cavity of the probe sleeve.

[0007] The housing has an exhaust port located outside the sensor probe. A fan shroud is fixedly connected to the inside of the housing. The exhaust port is located inside the fan shroud and connects the inner cavity of the fan shroud to the inner cavity of the probe sleeve. An exhaust tube is fixedly connected inside the housing. An exhaust motor is installed inside the exhaust tube. Fan blades for exhaust are fixedly connected to the shaft of the exhaust motor. An exhaust pipe is connected to the air inlet end of the exhaust tube. The exhaust pipe is connected to the fan shroud and connects the inner cavity of the exhaust tube to the inner cavity of the fan shroud. An exhaust pipe is connected to the air outlet end of the exhaust tube. The end of the exhaust pipe away from the exhaust tube faces the processor circuit board. The housing has a vent that connects the inner cavity of the housing to the outer side of the housing.

[0008] Furthermore, a reciprocating lead screw is rotatably connected to the side wall of the housing. The upper end of the reciprocating lead screw extends into the fan shroud and is connected to the shaft of the exhaust motor via gear transmission. The lower end of the reciprocating lead screw extends into the probe sleeve. The reciprocating lead screw is arranged parallel to the axis of the sensor probe. A reciprocating sleeve that moves up and down along the reciprocating lead screw is fitted on the reciprocating lead screw. A cleaning ring is fixedly connected to the reciprocating sleeve. The cleaning ring is fitted on the outside of the sensor probe, and the inner side of the cleaning ring is provided with cleaning bristles. A guide rod is fixedly connected to the housing. The guide rod is located in the probe sleeve. The axis of the guide rod is arranged parallel to the axis of the reciprocating lead screw, and the guide rod passes through the cleaning ring. The cleaning ring is slidably connected to the guide rod, thereby allowing the cleaning ring to move along the guide rod.

[0009] Furthermore, a first through hole is provided at the connection between the exhaust pipe and the hood on one side of the hood, connecting the exhaust pipe and the hood. A first rotating shaft is rotatably connected inside the exhaust pipe. One end of the first rotating shaft is connected to the rotating shaft of the exhaust motor. The other end of the first rotating shaft extends through the first through hole into the hood and is fixedly connected to a first bevel gear. A second bevel gear is fixedly connected to the upper end of the reciprocating screw. The second bevel gear and the first bevel gear are driven by gear meshing.

[0010] Furthermore, the ventilation elongated hole is arranged around the perimeter of the probe sleeve sidewall, and the lower end of the ventilation elongated hole extends to a position below the lower end of the sensor probe.

[0011] Furthermore, the reciprocating helical groove on the reciprocating lead screw extends to a position below the lower end of the sensor probe.

[0012] Furthermore, a fixing plate is fixedly connected to the lower end of the guide rod, and the lower end of the reciprocating lead screw is rotatably connected to the fixing plate.

[0013] Furthermore, a bracket is fixedly connected inside the housing, and an air guide tube facing the processor circuit board is fixedly connected to the end of the air outlet pipe, with the air guide tube fixedly connected to the bracket.

[0014] Furthermore, a mounting ear plate is fixedly connected to the outer side of the housing, and the mounting ear plate has mounting holes for bolts to pass through and mount the housing onto the building.

[0015] Furthermore, the housing contains a processor circuit board for processing temperature signals, and the sensor probe is electrically connected to the processor circuit board via a data cable.

[0016] The present invention provides an IoT-based probe-embedded temperature sensor with the following advantages: by allowing external air to flow through the probe sensor, the sensor's detected temperature is kept consistent with the ambient temperature; at the same time, air is blown out onto the processor circuit board to dissipate heat from the processor circuit board, keeping the internal cavity of the housing consistent with the external environment temperature, reducing the influence of the housing and internal components on the sensor, thereby keeping the sensor probe's detected temperature consistent with the external environment temperature, so that the measured temperature accurately reflects the temperature in the ambient air. Attached Figure Description

[0017] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings:

[0018] Figure 1 A schematic diagram of a probe-embedded temperature sensor based on the Internet of Things provided by the present invention;

[0019] Figure 2 A frontal partial cross-sectional view of a probe-embedded temperature sensor based on the Internet of Things provided by the present invention;

[0020] Figure 3 for Figure 2 Schematic diagram of a partial structure at part A in the middle;

[0021] Figure 4 for Figure 2 Schematic diagram of a partial structure in part B;

[0022] Figure 5 This is a top view of a partial structural diagram of the shell and shroud sections in this invention;

[0023] Figure 6 This is a top view of the cleaning ring structure in this invention.

[0024] The following are the labels in the diagram: 1. Housing; 11. Exhaust port; 12. Processor circuit board; 13. Vent hole; 14. Mounting ear plate; 2. Sensor probe; 3. Probe sleeve; 31. Ventilation strip hole; 4. Fan cover; 5. Exhaust duct; 51. Exhaust motor; 52. Fan blade; 6. Exhaust pipe; 7. Exhaust pipe; 71. Air guide tube; 81. Reciprocating screw; 82. Reciprocating sleeve; 83. Cleaning ring; 84. Cleaning bristles; 85. Guide rod; 86. First rotating shaft; 87. First bevel gear; 88. Second bevel gear; 89. Fixing plate; 9. Bracket. Detailed Implementation

[0025] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] It should be noted that in the embodiments of the present invention, all directional indications (such as up-down-left-right-forward-backward...) are only used to explain the relative positional relationship and movement between the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly. The connection can be a direct connection or an indirect connection.

[0028] like Figures 1-6As shown, an IoT-based probe-embedded temperature sensor includes a housing 1, on which a sensor probe 2 is mounted. A probe sleeve 3 is fixedly connected to the outer side of the housing 1. A ventilation slot 31 is provided on the side wall of the probe sleeve 3, and the sensor probe 2 is located inside the probe sleeve 3. An air extraction port 11 is provided on the housing 1, located outside the sensor probe 2. A fan shroud 4 is fixedly connected to the inner side of the housing 1. The upper end of the sensor probe 2 passes through the fan shroud 4 and is fixed to the fan shroud 4 with bolts. The air extraction port 11 is located inside the fan shroud 4 and communicates with the inner cavity of the fan shroud 4 and the inner cavity of the probe sleeve 3. A ventilation slot 3 is fixedly connected inside the housing 1. The ventilation duct 5 contains a ventilation motor 51, and a fan blade 52 for ventilation is fixedly connected to the shaft of the ventilation motor 51. The air inlet of the ventilation duct 5 is connected to a ventilation pipe 6, which is connected to the hood 4 and connects the inner cavity of the ventilation duct 5 to the inner cavity of the hood 4. The air outlet of the ventilation duct 5 is connected to an air outlet pipe 7. The housing 1 contains a processor circuit board 12 for processing temperature signals. The sensor probe 2 is electrically connected to the processor circuit board 12 via a data cable. The end of the air outlet pipe 7 away from the ventilation duct 5 faces the processor circuit board 12. The housing 1 has a vent hole 13 that connects the inner cavity of the housing 1 to the outer side of the housing 1.

[0029] Through the above technical solution, when the sensor is working, the exhaust motor 51 in the exhaust duct 5 drives the fan blade 52 to rotate, thereby drawing air from the shroud 4 to form a negative pressure, so that external air continuously enters the probe sleeve 3 from the outside, so that the probe sensor located in the probe sleeve 3 keeps monitoring the temperature of the external air, and keeps the sensor detection temperature consistent with the ambient temperature; at the same time, the air drawn in from the outside is blown out to the processor circuit board 12 through the exhaust pipe 7 to dissipate heat from the processor limit plate, and further maintains the temperature of the inner cavity of the housing 1 consistent with the external environment, reducing the influence of the housing 1 and internal components on the sensor, thereby reducing the detection temperature deviation caused by the housing 1 and internal components.

[0030] Specifically, a reciprocating screw 81 is rotatably connected to the side wall of the housing 1. The upper end of the reciprocating screw 81 extends into the fan shroud 4 and is connected to the shaft of the exhaust motor 51 via gear transmission. The lower end of the reciprocating screw 81 extends into the probe sleeve 3. The reciprocating screw 81 is arranged parallel to the axis of the sensor probe 2. A reciprocating sleeve 82 is sleeved on the reciprocating screw 81 and moves up and down along the reciprocating screw 81. A cleaning ring 83 is fixedly connected to the reciprocating sleeve 82. The cleaning ring 83 is sleeved on the outside of the sensor probe 2. The inner side of the cleaning ring 83 is provided with cleaning bristles 84. A guide rod 85 is fixedly connected to the housing 1. The guide rod 85 is located in the probe sleeve 3. The axis of the guide rod 85 is arranged parallel to the axis of the reciprocating screw 81, and the guide rod 85 passes through the cleaning ring 83. The cleaning ring 83 is slidably connected to the guide rod 85, so that the cleaning ring 83 moves along the guide rod 85. During operation, the shaft of the exhaust motor 51 rotates to drive the fan blades 52 to draw air. At the same time, the exhaust motor 51 drives the reciprocating screw 81 to rotate. The reciprocating sleeve 82 located on the reciprocating screw 81 moves up and down along the reciprocating screw 81, thereby driving the cleaning ring 83 to move up and down. This causes the cleaning bristles 84 on the inner ring of the cleaning ring 83 to move up and down to clean the sensor probe 2, preventing dust from accumulating on the sensor probe 2 and affecting the temperature detection of the sensor probe 2.

[0031] Specifically, a first through hole is provided at the connection between the exhaust pipe 6 and the hood 4 on one side of the hood 4. A first rotating shaft 86 is rotatably connected inside the exhaust pipe 6. One end of the first rotating shaft 86 is connected to the rotating shaft of the exhaust motor 51, and the other end of the first rotating shaft 86 extends through the first through hole into the hood 4 and is fixedly connected to a first bevel gear 87. A second bevel gear 88 is fixedly connected to the upper end of the reciprocating screw 81. The second bevel gear 88 and the first bevel gear 87 are driven by gear meshing. Through the cooperation of the first bevel gear 87 and the second bevel gear 88, the rotation of the exhaust motor 51 is transmitted to the rotation of the reciprocating screw 81, thereby cleaning the sensor.

[0032] Specifically, the ventilation elongated hole 31 is arranged around the periphery of the side wall of the probe sleeve 3, and the lower end of the ventilation elongated hole 31 extends below the lower end of the sensor probe 2. This allows the air entering through the ventilation elongated hole 31 to cover the lower end of the sensor probe 2.

[0033] Specifically, the reciprocating spiral groove on the reciprocating lead screw 81 extends below the lower end of the sensor probe 2. This allows the cleaning bristles 84 on the cleaning ring 83 to clean the lower end of the sensor probe 2.

[0034] Specifically, in order to make the up-and-down movement of the cleaning ring 83 more stable, the lower end of the guide rod 85 is fixedly connected to the fixing plate 89, and the lower end of the reciprocating screw 81 is rotatably connected to the fixing plate 89.

[0035] Specifically, in order to fix the air blowing direction, a bracket 9 is fixedly connected inside the housing 1, and an air guide 71 facing the processor circuit board 12 is fixedly connected to the end of the air outlet pipe 7. The air guide 71 is fixedly connected to the bracket 9.

[0036] Specifically, to facilitate the installation of the housing 1, a mounting ear plate 14 is fixedly connected to the outer side of the housing 1. The mounting ear plate 14 has a mounting hole, which is used to pass a bolt to install the housing 1 onto the building.

[0037] The parts not covered in this technical solution can be implemented using existing technologies.

[0038] The foregoing has shown and described the basic principles, main features, and characteristics of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A probe-embedded temperature sensor based on the Internet of Things, comprising a housing (1), a sensor probe (2) mounted on the housing (1), a probe sleeve (3) fixedly connected to the outer side of the housing (1), a ventilation elongated hole (31) being provided on the side wall of the probe sleeve (3), and the sensor probe (2) being located in the inner cavity of the probe sleeve (3); characterized in that: The housing (1) has an air extraction hole (11) located outside the sensor probe (2). A fan shroud (4) is fixedly connected to the inside of the housing (1). The air extraction hole (11) is located inside the fan shroud (4) and connects the inner cavity of the fan shroud (4) to the inner cavity of the probe sleeve (3). An exhaust tube (5) is fixedly connected inside the housing (1). An exhaust motor (51) is installed inside the exhaust tube (5). A fan blade (52) for exhaust is fixedly connected to the shaft of the exhaust motor (51). The air intake of the exhaust tube (5) is... The exhaust pipe (6) is connected to the end of the exhaust tube (5), and the exhaust pipe (6) is connected to the fan cover (4) and the exhaust pipe (6) connects the inner cavity of the exhaust tube (5) to the inner cavity of the fan cover (4). The exhaust tube (5) is connected to the air outlet end of the exhaust tube (5) and the end of the air outlet pipe (7) away from the exhaust tube (5) faces the processor circuit board (12). The housing (1) has a vent hole (13) that connects the inner cavity of the housing (1) to the outer side of the housing (1). The air drawn in from the outside is blown out to the processor circuit board through the air outlet pipe to dissipate heat from the processor circuit board. A reciprocating screw (81) is rotatably connected to the side wall of the housing (1). The upper end of the reciprocating screw (81) extends into the fan shroud (4) and is connected to the shaft of the exhaust motor (51) via gear transmission. The lower end of the reciprocating screw (81) extends into the probe sleeve (3). The reciprocating screw (81) is parallel to the axis of the sensor probe (2). A reciprocating sleeve (82) that moves up and down along the reciprocating screw (81) is sleeved on the reciprocating screw (81). A cleaning ring (83) is fixedly connected to the reciprocating sleeve (82). The cleaning ring (83) is sleeved on the outside of the sensor probe (2). The inner side of the cleaning ring (83) is provided with cleaning bristles. 84); A guide rod (85) is fixedly connected to the housing (1). The guide rod (85) is located in the probe sleeve (3). The axis of the guide rod (85) is parallel to the axis of the reciprocating screw (81). The guide rod (85) passes through the cleaning ring (83). The cleaning ring (83) is slidably connected to the guide rod (85), so that the cleaning ring (83) moves along the guide rod (85). The shaft of the exhaust motor rotates to drive the fan blades to exhaust air. At the same time, the exhaust motor drives the reciprocating screw to rotate. The reciprocating sleeve located on the reciprocating screw moves up and down along the reciprocating screw, thereby driving the cleaning ring to move up and down. This causes the cleaning bristles on the inner ring of the cleaning ring to move up and down to clean the sensor probe.

2. The probe-embedded temperature sensor based on the Internet of Things according to claim 1, characterized in that: A first through hole is provided at the connection between the exhaust pipe (6) and the hood (4) on one side. A first rotating shaft (86) is rotatably connected inside the exhaust pipe (6). One end of the first rotating shaft (86) is connected to the rotating shaft of the exhaust motor (51). The other end of the first rotating shaft (86) extends through the first through hole into the hood (4) and is fixedly connected to a first bevel gear (87). A second bevel gear (88) is fixedly connected to the upper end of the reciprocating screw (81). The second bevel gear (88) and the first bevel gear (87) are driven by gear meshing.

3. The probe-embedded temperature sensor based on the Internet of Things according to claim 1, characterized in that: The ventilation elongated hole (31) is arranged around the side wall of the probe sleeve (3), and the lower end of the ventilation elongated hole (31) extends to a position below the lower end of the sensor probe (2).

4. The probe-embedded temperature sensor based on the Internet of Things according to claim 1, characterized in that: The reciprocating spiral groove on the reciprocating lead screw (81) extends to a position below the lower end of the sensor probe (2).

5. A probe-embedded temperature sensor based on the Internet of Things according to claim 1, characterized in that: The lower end of the guide rod (85) is fixedly connected to a fixing plate (89), and the lower end of the reciprocating screw (81) is rotatably connected to the fixing plate (89).

6. The probe-embedded temperature sensor based on the Internet of Things according to claim 1, characterized in that: The housing (1) is fixedly connected to a bracket (9), and the end of the air outlet pipe (7) is fixedly connected to an air guide tube (71) facing the processor circuit board (12), and the air guide tube (71) is fixedly connected to the bracket (9).

7. The probe-embedded temperature sensor based on the Internet of Things according to claim 1, characterized in that: The outer side of the housing (1) is fixedly connected to a mounting ear plate (14), and the mounting ear plate (14) is provided with a mounting hole for passing through a bolt to install the housing (1) onto a building.

8. The probe-embedded temperature sensor based on the Internet of Things according to claim 1, characterized in that: The housing (1) contains a processor circuit board (12) for processing temperature signals, and the sensor probe (2) is electrically connected to the processor circuit board (12) via a data cable.

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