High-sensitivity ceramic pressure sensor device

Abstract

The utility model discloses a high-sensitivity ceramic pressure sensor device, which relates to the technical field of pressure sensors and comprises a base, a movement mechanism is arranged at the top of the base, a sensor body is arranged above the base, the movement mechanism comprises a circular ring, and the diameter of the circular ring is larger than the width of the sensor body. According to the high-sensitivity ceramic pressure sensor device, electromagnetic interference and electrostatic interference can be effectively eliminated through contact between the grounding wire and the ground, the detection sensitivity is improved, the sensor body can be covered through the circular ring and the sealing ring, and the influence of the environment on the sensor body is reduced; the drying agent in the placing box can be used for processing wet air, so that the dehumidification work is achieved, the influence of relatively wet air on the sensor body is prevented, the influence of severe weather on the sensor body is reduced, the environment is prevented from interfering with the sensor body, and the sensitivity of the sensor body is kept.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure sensors, in particular to a high-sensitivity ceramic pressure sensor device. Background Art

[0002] A pressure sensor is a device or apparatus that can sense pressure signals and convert them into usable output electrical signals according to certain rules. In the prior art, when a pressure sensor is used, if it encounters bad weather, rain and moisture in the air will come into contact with the sensor, which will affect the detection of the pressure sensor, affecting the sensitivity of the detection, reducing the sensitivity and making it inconvenient to use.

[0003] For example, patent application number CN201811043586.4 provides a high-sensitivity pressure sensor, which belongs to the technical field of capacitive pressure sensors. This high-sensitivity pressure sensor can measure multiple capacitance data through the chip through the setting of multiple electrode sensing units, and lead them out through lead wires, and the chip processes them to obtain more accurate detection data. When in use, if you encounter bad weather, rain and moisture in the air will contact the sensor, which will affect the detection of the pressure sensor, affecting the sensitivity of the detection and reducing the sensitivity problem.

[0004] For example, patent application number CN201921569313.3, the utility model relates to a high-sensitivity pressure sensor, which forms four sensitive resistors through the longitudinal arrangement of four piezoresistive bodies (4), forming a Huishitong bridge, of which two at the edges are subjected to compressive stress and two in the middle are subjected to tensile stress. Since the four sensitive resistors are arranged in exactly the same way and have the same initial resistance, they have a nearly perfect zero-point output in actual applications, greatly improving the inspection accuracy of the pressure sensor. When in use, encountering bad weather, rain and moisture in the air contacting the sensor will affect the detection of the pressure sensor, affecting the sensitivity of the detection and reducing the sensitivity problem. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a high-sensitivity ceramic pressure sensor device, which solves the problem that in bad weather, rain and moisture in the air contacting the sensor will affect the detection of the pressure sensor, thereby affecting the detection sensitivity and reducing the sensitivity.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a high-sensitivity ceramic pressure sensor device includes a base, a motion mechanism is arranged on the top of the base, and a sensor body is arranged above the base.

[0007] The motion mechanism includes a circular ring, the diameter of which is greater than the width of the sensor body, a sealing ring is arranged on the top of the circular ring, the sealing ring is movably connected to the circular ring, a fixing plate is arranged on the inner wall of the circular ring, a placement box is arranged on the top of the fixing plate, holes are arranged on both side surfaces of the placement box, a desiccant is arranged inside the placement box, and a grounding wire is arranged at the bottom of the sensor body.

[0008] Preferably, the top surface of the sealing ring and the top surface of the sensor body are arranged horizontally and collinearly, there are multiple fixing plates, and an arc-shaped plate is arranged at the bottom of each fixing plate.

[0009] Preferably, the surface of the arc-shaped plate is provided with grooves, and the inner wall of the bottom end of the circular ring is provided with a clamping groove.

[0010] Preferably, the number of the card slots and the slot holes is equal, the card slots and the slot holes are arranged horizontally in a collinear manner, and the areas of the card slots and the slot holes are equal.

[0011] Preferably, a sliding rod is provided at the bottom of the sensor body, the sliding rod passes through the slot, and one end of the sliding rod is matched with the card slot.

[0012] Preferably, the surface of the sensor body is provided with heat dissipation holes, and the number of the heat dissipation holes is multiple.

[0013] Preferably, one end of the sliding rod away from the card slot is movably connected to the bottom surface of the sensor body, and a screw is provided at the bottom of the sliding rod. Beneficial Effects

[0014] The utility model provides a high-sensitivity ceramic pressure sensor device. Compared with the prior art, it has the following beneficial effects:

[0015] 1. The high-sensitivity ceramic pressure sensor device can effectively eliminate electromagnetic interference and electrostatic interference through the contact between the ground wire and the ground, thereby improving the sensitivity of detection. The sensor body can be covered by the circular ring and the sealing ring to reduce the impact of the environment on the sensor body. The desiccant placed in the box can process the wet air to achieve the dehumidification work, preventing the humid air from affecting the sensor body, thereby reducing the impact of bad weather on the sensor body, preventing the environment from interfering with the sensor body, and maintaining the sensitivity of the sensor body.

[0016] 2. The high-sensitivity ceramic pressure sensor device moves the sliding rod. Since the sliding rod is movably connected to the bottom end of the sensor body, the sliding rod is moved along the sensor body, and one end of the sliding rod is separated from the slot and the slot hole respectively, so that the distance between the sliding rod and the inner wall of the ring and the arc plate is enlarged, the sensor body and the placement box can be removed, the desiccant at the placement box can be replenished, or the sensor body can be inspected and repaired. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the motion mechanism of the utility model;

[0019] Figure 3 It is a schematic diagram of the placement box and the fixing plate of the utility model;

[0020] Figure 4 It is a bottom view of the fixed plate and the sliding rod of the utility model.

[0021] In the figure: 1. base; 2. moving mechanism; 201. ring; 202. sealing ring; 203. fixing plate; 204. placing box; 205. hole; 206. desiccant; 207. arc plate; 208. grounding wire; 209. slot; 210. card slot; 211. sliding rod; 212. screw; 213. heat dissipation hole; 3. sensor body. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-3 The utility model provides a technical solution: a high-sensitivity ceramic pressure sensor device, including a base 1, a motion mechanism 2 is arranged on the top of the base 1, and a sensor body 3 is arranged above the base 1.

[0024] The moving mechanism 2 includes a circular ring 201, the diameter of which is greater than the width of the sensor body 3, a sealing ring 202 is arranged on the top of the circular ring 201, and the sealing ring 202 is movably connected to the circular ring 201, a fixing plate 203 is arranged on the inner wall of the circular ring 201, a placing box 204 is arranged on the top of the fixing plate 203, holes 205 are arranged on both side surfaces of the placing box 204, a desiccant 206 is arranged inside the placing box 204, and a grounding wire 208 is arranged at the bottom of the sensor body 3.

[0025] The surface of the sensor body 3 is provided with heat dissipation holes 213, and the number of heat dissipation holes 213 is multiple. Through the contact between the ground wire 208 and the ground, electromagnetic interference and electrostatic interference can be effectively eliminated, and the sensitivity of detection is improved. The sensor body 3 can be covered by the ring 201 and the sealing ring 202 to reduce the impact of the environment on the sensor body 3. The desiccant 206 in the placement box 204 can process the wet air to achieve the dehumidification work, prevent the wet air from affecting the sensor body 3, thereby reducing the impact of bad weather on the sensor body 3, preventing the environment from interfering with the sensor body 3, and maintaining the sensitivity of the sensor body 3.

[0026] See also Figure 1 and 4 The top surface of the sealing ring 202 and the top surface of the sensor body 3 are arranged horizontally in line, the number of the fixing plates 203 is multiple, and the bottom of each of the fixing plates 203 is provided with an arc plate 207, and the surface of the arc plate 207 is provided with a groove 209. The inner wall of the bottom end of the ring 201 is provided with a card slot 210, and the number of the card slots 210 and the grooves 209 is equal. The card slots 210 and the grooves 209 are arranged horizontally in line, and the areas of the card slots 210 and the grooves 209 are equal. A sliding rod 211 is provided at the bottom of the sensor body 3, and the sliding rod 211 passes through the groove 209, and one end of the sliding rod 211 is adapted to the card slot 210, and the end of the sliding rod 211 away from the card slot 210 is movably connected to the bottom surface of the sensor body 3, and the sliding rod 211 is provided at the bottom of the sensor body 3. A screw 212 is provided at the bottom of the movable rod 211. Since the sliding rod 211 is fixedly connected to the sensor body 3 by the screw 212, the screw 212 can be rotated to separate the screw 212 from the sliding rod 211. After separation, the sliding rod 211 is moved. Since the sliding rod 211 is movably connected to the bottom end of the sensor body 3, the sliding rod 211 is moved along the sensor body 3, and one end of the sliding rod 211 is separated from the slot 210 and the slot 209 respectively, so that the distance between the sliding rod 211 and the inner wall of the ring 201 and the arc plate 207 is enlarged, and the sensor body 3 and the placement box 204 can be removed, and the desiccant 206 at the placement box 204 can be replenished, or the sensor body 3 can be inspected and repaired.

[0027] During operation, the sensor body 3 is covered by the circular ring 201, and the top surface of the sealing ring 202 is horizontally collinear with the top surface of the sensor body 3, which can reduce rainwater falling on the sensor body 3, prevent rainwater from entering the sensor body 3 through the heat dissipation holes 213, and reduce the impact of the environment on the sensor body 3. Because there is a certain distance between the circular ring 201 and the sensor body 3, external gas can enter between the circular ring 201 and the sensor body 3, and the gas enters the sensor body 3 through the heat dissipation holes 213. The desiccant 206 in the placement box 204 can process the humid air, thereby achieving the dehumidification work, preventing the humid air from affecting the sensor body 3, and the contact between the grounding wire 208 and the ground can be The electromagnetic interference and electrostatic interference are effectively eliminated, and the sensitivity of detection is improved. Since the sliding rod 211 is fixedly connected to the sensor body 3 by the screw 212, the screw 212 can be rotated to separate the screw 212 from the sliding rod 211. After separation, the sliding rod 211 is moved. Since the sliding rod 211 is movably connected to the bottom end of the sensor body 3, the sliding rod 211 is moved along the sensor body 3, and one end of the sliding rod 211 is separated from the slot 210 and the slot 209 respectively, so that the distance between the sliding rod 211 and the inner wall of the ring 201 and the arc plate 207 is enlarged, the sensor body 3 and the placement box 204 can be removed, the desiccant 206 at the placement box 204 can be replenished, or the sensor body 3 can be inspected and repaired.

[0028] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. A high-sensitivity ceramic pressure sensor device, comprising a base (1), characterized in that: A motion mechanism (2) is arranged on the top of the base (1), and a sensor body (3) is arranged above the base (1); The motion mechanism (2) comprises a circular ring (201), the diameter of the circular ring (201) being greater than the width of the sensor body (3), a sealing ring (202) being arranged on the top of the circular ring (201), the sealing ring (202) being movably connected to the circular ring (201), a fixing plate (203) being arranged on the inner wall of the circular ring (201), a placement box (204) being arranged on the top of the fixing plate (203), holes (205) being arranged on both side surfaces of the placement box (204), a desiccant (206) being arranged inside the placement box (204), and a grounding wire (208) being arranged at the bottom of the sensor body (3).

2. The high-sensitivity ceramic pressure sensor device according to claim 1, characterized in that: The top surface of the sealing ring (202) and the top surface of the sensor body (3) are arranged horizontally and in line with each other. There are a plurality of fixing plates (203), and a curved plate (207) is arranged at the bottom of each fixing plate (203).

3. The high-sensitivity ceramic pressure sensor device according to claim 2, characterized in that: A groove (209) is provided on the surface of the arc-shaped plate (207), and a clamping groove (210) is provided on the inner wall of the bottom end of the circular ring (201).

4. The high-sensitivity ceramic pressure sensor device according to claim 3, characterized in that: The number of the card slots (210) and the slot holes (209) are equal, the card slots (210) and the slot holes (209) are arranged horizontally and in a collinear manner, and the areas of the card slots (210) and the slot holes (209) are equal.

5. The high-sensitivity ceramic pressure sensor device according to claim 3, characterized in that: A sliding rod (211) is provided at the bottom of the sensor body (3); the sliding rod (211) passes through the slot (209), and one end of the sliding rod (211) is adapted to the card slot (210).

6. The high-sensitivity ceramic pressure sensor device according to claim 1, characterized in that: The surface of the sensor body (3) is provided with heat dissipation holes (213), and the number of the heat dissipation holes (213) is multiple.

7. The high-sensitivity ceramic pressure sensor device according to claim 5, characterized in that: One end of the sliding rod (211) away from the card slot (210) is movably connected to the bottom surface of the sensor body (3), and a screw (212) is provided at the bottom of the sliding rod (211).

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