High-precision meteorological sensor for geodetic measuring instrument

Abstract

The utility model relates to the technical field of geodetic measuring instruments, in particular to a high-precision meteorological sensor for a geodetic measuring instrument, which comprises a temperature and humidity sensor body, a cover body covers the surface of the temperature and humidity sensor body, a probe is mounted at the bottom of the temperature and humidity sensor body, and a protection mechanism is arranged on the surface of the probe. A maintenance mechanism is arranged between the temperature and humidity sensor body and the cover body, the maintenance mechanism internally comprises a maintenance assembly, an annular groove and a threaded groove, an electromagnetic interference prevention mechanism is arranged in the temperature and humidity sensor body, and the electromagnetic interference prevention mechanism is composed of a shielding layer and an electromagnetic interference prevention component. According to the utility model, electronic components in the meteorological sensor are not easily interfered by surrounding electromagnetic interference when the meteorological sensor is used, the measurement precision of the meteorological sensor in use is improved, the service life of the probe in use of the meteorological sensor is prolonged, and the convenience degree of the meteorological sensor in maintenance is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of geodetic instruments, in particular to a high-precision meteorological sensor used for geodetic instruments. Background Art

[0002] A geodetic instrument is a combined precision instrument for surface measurement, consisting of a theodolite, a total station, a GPS, a target and a laser plummet. When measuring, a geodetic instrument often requires the use of meteorological sensors. Sensors such as humidity sensors, temperature sensors, and wind speed sensors used to monitor meteorological factors are collectively referred to as meteorological sensors.

[0003] Meteorological sensors used in geodes are used outdoors and are easily affected by electromagnetic interference from surrounding equipment, which can easily affect the accuracy of the meteorological sensors when used; meteorological sensors used in geodes generally measure the temperature and humidity in the air through probes, and the probes are generally exposed to the air all the time, which can easily affect the service life of the probes after a long time; the outer shell of the meteorological sensor is generally directly encapsulated with adhesive or disassembled with multiple screws, which is cumbersome during maintenance, thus affecting the convenience of maintenance of the meteorological sensor. Utility Model Content

[0004] The purpose of the utility model is to provide a high-precision meteorological sensor for a geodetic instrument to solve the problems in the above-mentioned background technology that the meteorological sensor has low accuracy during use, which easily affects the service life of the probe and is inconvenient during maintenance.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-precision meteorological sensor for a geodetic instrument, comprising a temperature and humidity sensor body, the surface of the temperature and humidity sensor body is covered with a cover body, a probe is installed at the bottom of the temperature and humidity sensor body, a protective mechanism is arranged on the surface of the probe, the protective mechanism is composed of a fixing ring and a protective component, a maintenance mechanism is arranged between the temperature and humidity sensor body and the cover body, the interior of the maintenance mechanism includes a maintenance assembly, an annular groove and a threaded groove, the interior of the temperature and humidity sensor body is arranged with an anti-electromagnetic interference mechanism, the anti-electromagnetic interference mechanism is composed of a shielding layer and an anti-electromagnetic interference component.

[0006] Preferably, a fixing ring is fixed to the bottom of the temperature and humidity sensor body, the fixing ring is located on the outside of the probe, and a protective component is provided at the bottom of the temperature and humidity sensor body.

[0007] Preferably, an elastic column, a connecting piece and a protective cover are arranged inside the protective component, a protective cover is arranged inside the fixing ring, the protective cover is located outside the probe, and the protective cover and the fixing ring are plugged into and matched with each other.

[0008] Preferably, a connecting piece is fixed to one end of the protective cover, an elastic column is fixed to one end of the connecting piece, and one end of the elastic column is rotatably connected to the bottom of the temperature and humidity sensor body.

[0009] Preferably, an annular groove is provided on the inner wall at the bottom of the cover body, a threaded groove is provided on the inner wall of the cover body, and a maintenance component is sleeved on the top of the temperature and humidity sensor body.

[0010] Preferably, the inspection assembly is composed of a sealing ring and a threaded ring, a threaded ring is fixed to the surface at the top position of the temperature and humidity sensor body, and the threaded ring and the threaded groove are threadedly matched with each other.

[0011] Preferably, a sealing ring is fixed at the bottom of the sealing ring, and the surface of the sealing ring is tightly fitted with the inner wall of the annular groove.

[0012] Preferably, a shielding layer is inlaid on the inner wall of the cover, the surface of the shielding layer is in close contact with the surface of the temperature and humidity sensor body, and an anti-electromagnetic interference component is arranged inside the temperature and humidity sensor body.

[0013] Preferably, the interior of the anti-electromagnetic interference component includes a gold wire woven mesh layer, a tinfoil layer and a fastening bolt, the interior of the temperature and humidity sensor body is provided with a tinfoil layer, the surface of the tinfoil layer is fixed with a gold wire woven mesh layer, one end of the tinfoil layer is threadedly connected with a fastening bolt, one end of the fastening bolt passes through the tinfoil layer and is threadedly fastened to the inner wall of the temperature and humidity sensor body.

[0014] Compared with the prior art, the utility model has the following beneficial effects: the high-precision meteorological sensor used in the geodetic instrument not only makes the electronic components inside the meteorological sensor less susceptible to surrounding electromagnetic interference when in use, improves the measurement accuracy of the meteorological sensor when in use, prolongs the service life of the probe when in use of the meteorological sensor, but also improves the convenience of overhauling the meteorological sensor;

[0015] 1. By providing an anti-electromagnetic interference mechanism, when the cover body is fixed to the temperature and humidity sensor body, the shielding layer covers one end of the temperature and humidity sensor body, and the electronic components inside the temperature and humidity sensor body are electromagnetically shielded. Under the action of the gold wire woven mesh layer and the tin foil layer, the electronic components inside the temperature and humidity sensor body are not easily affected by electromagnetic interference. Under the action of the fastening bolts, the tin foil layer can be fixed to the inner wall of the temperature and humidity sensor body to realize the anti-electromagnetic interference function of the meteorological sensor, so that the electronic components inside the meteorological sensor are not easily affected by the surrounding electromagnetic interference when the meteorological sensor is used, thereby improving the measurement accuracy of the meteorological sensor when in use;

[0016] 2. By setting up a protective mechanism, the connecting piece is pulled under the action of the elastic column, so that the connecting piece drives the protective cover to the outside of the probe. At this time, one end of the protective cover is inserted into the inside of the fixing ring, and the probe is shielded and protected under the cooperation of the protective cover and the fixing ring. When the meteorological sensor is working, the connecting piece can be pulled down to make the elastic column in a stretched state. At this time, the protective cover moves with the connecting piece, so that the protective cover is away from the probe, and then the connecting piece is rotated so that the connecting piece and the elastic column are rotated as the center, so that the protective cover is away from the probe, and the air temperature and humidity are measured under the action of the probe, so as to realize the protection function of the meteorological sensor on the probe, thereby extending the service life of the probe when the meteorological sensor is used;

[0017] 3. By setting up a maintenance mechanism, the cover body is put on one end of the temperature and humidity sensor body, and then the temperature and humidity sensor body is rotated to make the temperature and humidity sensor body drive the threaded ring to rotate, and the temperature and humidity sensor body and the cover body are quickly fixed under the cooperation of the thread of the threaded ring and the threaded groove. At the same time, one side of the sealing ring is squeezed into the inside of the annular groove and tightly attached to the inner wall of the annular groove, so that the temperature and humidity sensor body and the cover body are sealed, so as to realize the function of easy disassembly and assembly of the meteorological sensor, thereby improving the convenience of meteorological sensor maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional appearance structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0020] Figure 3 It is a partial enlarged structural schematic diagram of the utility model;

[0021] Figure 4 It is an enlarged structural diagram of the protection mechanism of the utility model.

[0022] In the figure: 1. Temperature and humidity sensor body; 101. Cover; 102. Probe; 2. Protection mechanism; 201. Fixing ring; 202. Protection component; 2021. Elastic column; 2022. Connecting piece; 2023. Protection cover; 3. Maintenance mechanism; 301. Maintenance assembly; 3011. Sealing ring; 3012. Threaded ring; 302. Annular groove; 303. Threaded groove; 4. Anti-electromagnetic interference mechanism; 401. Shielding layer; 402. Anti-electromagnetic interference component; 4021. Gold wire braided mesh layer; 4022. Tin foil layer; 4023. Fastening bolts. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. In addition, the terms "first", "second", "third", "upper, lower, left, right", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. At the same time, in the description of the present invention, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0024] The utility model provides a high-precision meteorological sensor for a geodetic instrument. Figure 1 and Figure 2 As shown, it includes a temperature and humidity sensor body 1 , the surface of the temperature and humidity sensor body 1 is covered with a cover body 101 , and the bottom of the temperature and humidity sensor body 1 is installed with a probe 102 .

[0025] Furthermore, if Figure 4 As shown, a protective mechanism 2 is provided on the surface of the probe 102, and the protective mechanism 2 is composed of a fixing ring 201 and a protective component 202. A fixing ring 201 is fixed to the bottom of the temperature and humidity sensor body 1, and the fixing ring 201 is located on the outside of the probe 102. A protective component 202 is provided at the bottom of the temperature and humidity sensor body 1, and an elastic column 2021, a connecting piece 2022 and a protective cover 2023 are provided inside the protective component 202. A protective cover 2023 is provided inside the fixing ring 201, and the protective cover 2023 is located on the outside of the probe 102. The protective cover 2023 and the fixing ring 201 are plugged into each other, and a connecting piece 2022 is fixed to one end of the protective cover 2023, and an elastic column 2021 is fixed to one end of the connecting piece 2022, and one end of the elastic column 2021 is rotatably connected to the bottom of the temperature and humidity sensor body 1.

[0026] When in use, the connecting piece 2022 is pulled under the action of the elastic column 2021, so that the connecting piece 2022 drives the protective cover 2023 to cover the outside of the probe 102. At this time, one end of the protective cover 2023 is inserted into the inside of the fixing ring 201, and the probe 102 is shielded and protected under the cooperation of the protective cover 2023 and the fixing ring 201. When the meteorological sensor is working, the connecting piece 2022 can be pulled down to make the elastic column 2021 in a stretched state. At this time, the protective cover 2023 moves with the connecting piece 2022, so that the protective cover 2023 is away from the probe 102, and then the connecting piece 2022 is rotated so that the connecting piece 2022 and the elastic column 2021 are rotated as the center, so that the protective cover 2023 is away from the probe 102, and the air temperature and humidity are measured under the action of the probe 102 to realize the protection function of the meteorological sensor for the probe 102.

[0027] Furthermore, if Figure 2 and Figure 3 As shown, a maintenance mechanism 3 is arranged between the temperature and humidity sensor body 1 and the cover body 101, and the interior of the maintenance mechanism 3 includes a maintenance component 301, an annular groove 302 and a threaded groove 303. The inner wall at the bottom position of the cover body 101 is provided with an annular groove 302, and the inner wall of the cover body 101 is provided with a threaded groove 303. The maintenance component 301 is sleeved at the top position of the temperature and humidity sensor body 1, and the maintenance component 301 consists of a sealing ring 3011 and a threaded ring 3012. A threaded ring 3012 is fixed on the surface at the top position of the temperature and humidity sensor body 1, and the threaded ring 3012 and the threaded groove 303 are threadedly matched with each other. A sealing ring 3011 is fixed at the bottom position of the sealing ring 3011, and the surface of the sealing ring 3011 is tightly fitted with the inner wall of the annular groove 302.

[0028] When in use, the cover body 101 is put onto one end of the temperature and humidity sensor body 1, and then the temperature and humidity sensor body 1 is rotated so that the temperature and humidity sensor body 1 drives the threaded ring 3012 to rotate, and the temperature and humidity sensor body 1 and the cover body 101 are quickly fixed under the thread cooperation of the threaded ring 3012 and the threaded groove 303. At the same time, one side of the sealing ring 3011 is squeezed into the inside of the annular groove 302 and tightly adheres to the inner wall of the annular groove 302, so as to seal the temperature and humidity sensor body 1 and the cover body 101, so as to realize the function of easy disassembly and assembly of the meteorological sensor.

[0029] Furthermore, if Figure 3As shown, the temperature and humidity sensor body 1 is provided with an anti-electromagnetic interference mechanism 4, which is composed of a shielding layer 401 and an anti-electromagnetic interference component 402. The inner wall of the cover body 101 is inlaid with the shielding layer 401, and the surface of the shielding layer 401 is tightly fitted with the surface of the temperature and humidity sensor body 1. The temperature and humidity sensor body 1 is provided with an anti-electromagnetic interference component 402, and the interior of the anti-electromagnetic interference component 402 includes a gold wire woven mesh layer 4021, a tinfoil layer 4022 and a fastening bolt 4023. The temperature and humidity sensor body 1 is provided with a tinfoil layer 4022, and the surface of the tinfoil layer 4022 is fixed with a gold wire woven mesh layer 4021, and one end of the tinfoil layer 4022 is threadedly connected to the fastening bolt 4023, and one end of the fastening bolt 4023 penetrates the tinfoil layer 4022 and is threadedly fastened to the inner wall of the temperature and humidity sensor body 1.

[0030] During use, when the cover body 101 is fixed to the temperature and humidity sensor body 1, the shielding layer 401 covers one end of the temperature and humidity sensor body 1, electromagnetically shields the electronic components inside the temperature and humidity sensor body 1, and makes the electronic components inside the temperature and humidity sensor body 1 less susceptible to electromagnetic interference under the action of the gold wire woven mesh layer 4021 and the tin foil layer 4022. The tin foil layer 4022 can be fixed to the inner wall of the temperature and humidity sensor body 1 under the action of the fastening bolts 4023 to realize the anti-electromagnetic interference function of the meteorological sensor.

[0031] Working principle: When in use, first put the cover 101 onto one end of the temperature and humidity sensor body 1, then rotate the temperature and humidity sensor body 1 so that the temperature and humidity sensor body 1 drives the threaded ring 3012 to rotate, and the temperature and humidity sensor body 1 and the cover 101 are quickly fixed under the thread cooperation of the threaded ring 3012 and the threaded groove 303. At the same time, one side of the sealing ring 3011 is squeezed into the inside of the annular groove 302 and tightly attached to the inner wall of the annular groove 302, so as to seal the temperature and humidity sensor body 1 and the cover 101, so as to realize the function of easy disassembly and assembly of the meteorological sensor, thereby improving the convenience of maintenance of the meteorological sensor.

[0032] When the cover 101 is fixed to the temperature and humidity sensor body 1, the shielding layer 401 covers one end of the temperature and humidity sensor body 1, electromagnetically shields the electronic components inside the temperature and humidity sensor body 1, and makes the electronic components inside the temperature and humidity sensor body 1 less susceptible to electromagnetic interference under the action of the gold wire woven mesh layer 4021 and the tin foil layer 4022. The tin foil layer 4022 can be fixed to the inner wall of the temperature and humidity sensor body 1 under the action of the fastening bolts 4023 to realize the anti-electromagnetic interference function of the meteorological sensor, so that the internal electronic components of the meteorological sensor are not susceptible to surrounding electromagnetic interference when the meteorological sensor is in use, thereby improving the measurement accuracy of the meteorological sensor when in use.

[0033] At this time, under the action of the elastic column 2021, the connecting piece 2022 is pulled, so that the connecting piece 2022 drives the protective cover 2023 to cover the outside of the probe 102. At this time, one end of the protective cover 2023 is inserted into the fixing ring 201, and the probe 102 is shielded and protected under the cooperation of the protective cover 2023 and the fixing ring 201. When the meteorological sensor is working, the connecting piece 2022 can be pulled down to make the elastic column 2021 in a stretched state. At this time, the protective cover 2023 moves with the connecting piece 2022, so that the protective cover 2023 is away from the probe 102, and then the connecting piece 2022 is rotated so that the connecting piece 2022 and the elastic column 2021 are rotated as the center, so that the protective cover 2023 is away from the probe 102, and the air temperature and humidity are measured under the action of the probe 102, so as to realize the protection function of the meteorological sensor on the probe 102, thereby extending the service life of the probe 102 when the meteorological sensor is in use, and finally completing the use of the meteorological sensor.

[0034] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A high-precision meteorological sensor for a geodetic instrument, comprising a temperature and humidity sensor body (1), characterized in that: The surface of the temperature and humidity sensor body (1) is covered with a cover body (101); a probe (102) is installed at the bottom of the temperature and humidity sensor body (1); a protective mechanism (2) is provided on the surface of the probe (102); the protective mechanism (2) is composed of a fixing ring (201) and a protective component (202); a maintenance mechanism (3) is provided between the temperature and humidity sensor body (1) and the cover body (101); the interior of the maintenance mechanism (3) includes a maintenance component (301), an annular groove (302) and a threaded groove (303); an anti-electromagnetic interference mechanism (4) is provided inside the temperature and humidity sensor body (1); the anti-electromagnetic interference mechanism (4) is composed of a shielding layer (401) and an anti-electromagnetic interference component (402).

2. The high-precision meteorological sensor for a geodetic instrument according to claim 1, characterized in that: A fixing ring (201) is fixed to the bottom of the temperature and humidity sensor body (1), and the fixing ring (201) is located outside the probe (102). A protective component (202) is provided at the bottom of the temperature and humidity sensor body (1).

3. The high-precision meteorological sensor for a geodetic instrument according to claim 2, characterized in that: The protective component (202) is provided with an elastic column (2021), a connecting piece (2022) and a protective cover (2023) inside, the fixing ring (201) is provided with a protective cover (2023) inside, the protective cover (2023) is located outside the probe (102), and the protective cover (2023) and the fixing ring (201) are plugged into and matched with each other.

4. The high-precision meteorological sensor for a geodetic instrument according to claim 3, characterized in that: A connecting piece (2022) is fixed to one end of the protective cover (2023), an elastic column (2021) is fixed to one end of the connecting piece (2022), and one end of the elastic column (2021) is rotatably connected to the bottom of the temperature and humidity sensor body (1).

5. The high-precision meteorological sensor for a geodetic instrument according to claim 1, characterized in that: An annular groove (302) is provided on the inner wall at the bottom of the cover body (101), a threaded groove (303) is provided on the inner wall of the cover body (101), and a maintenance component (301) is sleeved on the top of the temperature and humidity sensor body (1).

6. The high-precision meteorological sensor for a geodetic instrument according to claim 5, characterized in that: The inspection component (301) is composed of a sealing ring (3011) and a threaded ring (3012); a threaded ring (3012) is fixed to the surface at the top of the temperature and humidity sensor body (1); and the threaded ring (3012) and the threaded groove (303) are threadably matched with each other.

7. The high-precision meteorological sensor for a geodetic instrument according to claim 6, characterized in that: A sealing ring (3011) is fixed at the bottom of the sealing ring (3011), and the surface of the sealing ring (3011) is tightly fitted to the inner wall of the annular groove (302).

8. The high-precision meteorological sensor for a geodetic instrument according to claim 1, characterized in that: The inner wall of the cover body (101) is inlaid with a shielding layer (401), the surface of the shielding layer (401) is tightly fitted with the surface of the temperature and humidity sensor body (1), and an anti-electromagnetic interference component (402) is arranged inside the temperature and humidity sensor body (1).

9. The high-precision meteorological sensor for a geodetic instrument according to claim 8, characterized in that: The anti-electromagnetic interference component (402) contains a gold wire braided mesh layer (4021), a tinfoil layer (4022) and a fastening bolt (4023) inside, the temperature and humidity sensor body (1) is provided with a tinfoil layer (4022) inside, the gold wire braided mesh layer (4021) is fixed on the surface of the tinfoil layer (4022), one end of the tinfoil layer (4022) is threadedly connected to a fastening bolt (4023), and one end of the fastening bolt (4023) passes through the tinfoil layer (4022) and is threadedly fastened to the inner wall of the temperature and humidity sensor body (1).

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