Anti-electromagnetic structure for pressure sensor

Abstract

The utility model provides an anti-electromagnetic structure for a pressure sensor, which belongs to the field of pressure sensors and comprises a sensor body, and an anti-electromagnetic mechanism is mounted on the periphery of the sensor body. According to the utility model, through the arrangement of the anti-electromagnetic mechanism, the periphery of the sensor body is protected by the first shielding case and the second shielding case, and the first shielding case and the second shielding case are installed in a threaded manner, so that the installation between the first shielding case and the second shielding case is relatively convenient and rapid; according to the utility model, electromagnetic interference can be reduced, the housing is grounded by the ground wire, redundant electromagnetic energy is guided into the ground, interference around equipment is avoided, the influence of external electromagnetic noise is avoided, stable performance can be maintained in various severe environments, and the service life of the sensor can be prolonged. And faults and maintenance cost caused by electromagnetic interference are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the pressure sensor field, specifically, relate to a pressure sensor with anti electromagnetic structure. BACKGROUND

[0002] Pressure sensor is the device or device that can feel pressure signal and can convert pressure signal into usable output electric signal according to certain rule, in the complex electromagnetic environment scene, traditional pressure sensor is susceptible to electromagnetic interference, leading to measurement data deviation, influence system's overall performance.

[0003] Through the search, in the prior art, patent announcement number for CN221037755U Chinese patent discloses "a pressure sensor with anti electromagnetic structure belongs to pressure sensor field, including pressure sensor structure, protection mechanism includes silver fiber and the metal fiber alloy wire setting at one side of silver fiber, this utility model solves the problem that pressure sensor is susceptible to electromagnetic interference of other elements, under the condition of being interfered by external electromagnetic, will appear the deviation of measurement data, the problem, the moving pipe connected at the one end of the protection mechanism is inserted into the inside of the bend groove, the T-shaped rod is inserted into the inside of the rotating pipe, the triangular insert strip is pulled out from the ring groove to move, the triangular insert strip is limited by the ring groove, the moving pipe is pulled along the inside of the mounting pipe to move, the protection mechanism wrapped around the outer surface of the rotating pipe is loosened, the inside of the mounting pipe is covered by the protection mechanism, the silver fiber and the metal fiber alloy wire use their own characteristics to block the electromagnetic, effectively avoid the operation of the external electromagnetic interference pressure sensor main body", but still has the following defects:

[0004] The inside sensor body is protected by the mounting pipe, the assembly between the mounting pipes is relatively cumbersome, is not simple enough, and only the silver fiber and the metal fiber alloy wire are used to isolate the sensor body from the outside, and the anti-electromagnetic effect is poor.

[0005] Therefore, we improve it and propose a pressure sensor with anti electromagnetic structure. UTILITY MODEL CONTENTS

[0006] The utility model relates to the pressure sensor field, specifically, relate to a pressure sensor with anti electromagnetic structure.

[0007] In order to realize the above-mentioned utility model purposes, the utility model provides the following technical schemes:

[0008] The pressure sensor with anti electromagnetic structure is used to improve the above-mentioned problems.

[0009] The utility model is as follows:

[0010] The sensor body is provided with an anti-electromagnetic mechanism.

[0011] The anti-electromagnetic mechanism comprises a first shielding cover, a second shielding cover, a threaded groove, a reserved hole and a filter.

[0012] The second shielding cover is provided with a ground wire on the outer side.

[0013] The first shielding cover and the second shielding cover are connected through a sealing strip.

[0014] The first shielding cover is provided with a heat dissipation hole on the side surface.

[0015] The second shielding cover is provided with an inner ring on the inner side wall.

[0016] The first shielding cover and the second shielding cover are made of aluminum.

[0017] The filter is used for power supply and signal interfaces.

[0018] Compared with the prior art, the anti-electromagnetic mechanism has the advantages that:

[0019] In the scheme of the utility model:

[0020] 1. The anti-electromagnetic mechanism is provided on the periphery of the sensor body, and the first shielding cover and the second shielding cover are used for protection.

[0021] 2. Simultaneously grounding the shell to guide the excess electromagnetic energy into the ground, avoiding interference around the equipment, not affected by external electromagnetic noise, and maintaining stable performance in various harsh environments, which helps to prolong the service life of the sensor and reduce the failure and maintenance costs caused by electromagnetic interference. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 A structural schematic diagram of the anti-electromagnetic structure for the pressure sensor provided by the present application is provided.

[0023] Figure 2 A structural schematic diagram of the anti-electromagnetic structure for the pressure sensor provided by the present application is provided.

[0024] Figure 3 A structural schematic diagram of the anti-electromagnetic structure for the pressure sensor provided by the present application is provided.

[0025] Figure 4 A structural schematic diagram of the anti-electromagnetic structure for the pressure sensor provided by the present application is provided.

[0026] Figure 5 A structural schematic diagram of the anti-electromagnetic structure for the pressure sensor provided by the present application is provided.

[0027] Indicated in the figure:

[0028] 1, sensor body; 2, anti-electromagnetic mechanism; 201, first shielding cover; 202, second shielding cover; 203, threaded groove; 204, reserved hole; 205, filter; 3, ground wire; 4, sealing strip; 5, heat dissipation hole; 6, built-in ring. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments.

[0030] Therefore, the following detailed description of the embodiments of the present application is not intended to limit the scope of the claimed application, but only represents some embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0031] It should be noted that the embodiments in the present application and the features and technical solutions in the embodiments can be combined with each other without conflict.

[0032] It should be noted that like reference numerals and letters refer to like items throughout the several views, and once an item is defined in one view, it should not require further defining and explaining in the subsequent views.

[0033] As shown in Figures 1-5 the embodiment, an anti-electromagnetic structure for pressure sensor is provided, which comprises a sensor body 1, and an anti-electromagnetic mechanism 2 mounted on the periphery of the sensor body 1.

[0034] As shown in Figure 2 , Figure 4 and Figure 5 , the anti-electromagnetic mechanism 2 comprises a first shielding cover 201, a second shielding cover 202, a threaded groove 203, a reserved hole 204, and a filter 205. The first shielding cover 201 and the second shielding cover 202 are combined together and sleeved on the periphery of the sensor body 1. The first shielding cover 201 is located at the upper half of the sensor body 1. The threaded groove 203 is formed at the end where the first shielding cover 201 and the second shielding cover 202 are connected to each other. The end of the second shielding cover 202 connected to the first shielding cover 201 extends outward by a certain distance, and the extended part is screwed with the inside of the threaded groove 203. The reserved hole 204 is formed on one side of the first shielding cover 201. The filter 205 is installed on the top of the first shielding cover 201 by bolts. The first shielding cover 201 and the second shielding cover 202 are installed on the periphery of the sensor body 1, and are connected between the top end of the second shielding cover 202 and the threaded groove 203, so that the first shielding cover 201 and the second shielding cover 202 are combined into a whole, and then the filter 205 is connected to the interface of the sensor body 1, so as to reduce the entry and exit of electromagnetic interference.

[0035] As shown in Figure 2 , a ground wire 3 is fixedly installed on the outside of the second shielding cover 202. The ground wire 3 grounds the first shielding cover 201 and the second shielding cover 202, so as to guide the excess electromagnetic energy into the ground. Avoiding interference around the equipment.

[0036] As shown in Figure 2 , a sealing strip 4 is installed at the connection between the first shielding cover 201 and the second shielding cover 202. The sealing strip 4 is made of rubber material. The sealing property of the joint is enhanced, and the joint between the first shielding cover 201 and the second shielding cover 202 is ensured to be well sealed, so as to prevent electromagnetic interference from entering from the gap.

[0037] As shown in Figure 5 , heat dissipation holes 5 are formed on the side surface of the first shielding cover 201. The heat dissipation holes 5 are designed in a honeycomb shape. The honeycomb-shaped heat dissipation holes 5 are more reasonable in design, which can dissipate heat while ensuring that the heat dissipation holes 5 will not become a propagation channel for electromagnetic interference.

[0038] As shown in Figure 3As shown, the inner side wall of the second shielding cover 202 is fixedly provided with an inner ring 6, which is located between the second shielding cover 202 and the sensor body 1 during installation. The inner ring 6 protects the sensor body 1.

[0039] As shown in the drawings, Figure 2 As shown, the first shielding cover 201 and the second shielding cover 202 are made of aluminum as the shell, which can block external electromagnetic interference.

[0040] As shown in the drawings, Figure 2 As shown, the filter 205 should use a power filter 205 and a signal filter 205 for the power interface and the signal interface, respectively, according to the use requirements.

[0041] Specifically, the anti-electromagnetic structure of the pressure sensor is used as follows: the first shielding cover 201 and the second shielding cover 202 are installed on the periphery of the sensor body 1, the first shielding cover 201 and the second shielding cover 202 are combined into a whole through the connection between the top end of the second shielding cover 202 and the threaded groove 203, then the power filter 205 and the signal filter 205 are used for the power interface and the signal interface, respectively, to reduce the entry and exit of electromagnetic interference, the ground terminals of the first shielding cover 201 and the second shielding cover 202 of the sensor body 1 are connected to the same ground wire 3 to form a complete electromagnetic shielding system, and the excess electromagnetic energy is guided into the ground to avoid interference around the equipment.

[0042] All the technical features in the embodiment can be freely combined according to actual needs.

[0043] The above embodiment is a preferred implementation scheme of the utility model, and the utility model can also be implemented in other ways without departing from the technical scheme concept. Any obvious replacement without departing from the technical scheme concept is within the protection scope of the utility model.

Claims

1. An anti-electromagnetic structure for a pressure sensor, comprising a sensor body (1), characterized in that, The periphery of the sensor body (1) is provided with an anti-electromagnetic mechanism (2); The anti-electromagnetic mechanism (2) comprises a first shielding cover (201), a second shielding cover (202), a threaded groove (203), a reserved hole (204) and a filter (205), the first shielding cover (201) and the second shielding cover (202) are combined together and sleeved on the periphery of the sensor body (1), the first shielding cover (201) is located at the upper half of the sensor body (1), the threaded groove (203) is arranged at one end of the first shielding cover (201) and the second shielding cover (202) connected with each other, one end of the second shielding cover (202) connected with the first shielding cover (201) extends outward by a distance, and the extended part is connected with the internal threads of the threaded groove (203), the reserved hole (204) is arranged on one side of the first shielding cover (201), and the filter (205) is installed on the top of the first shielding cover (201) through bolts.

2. The anti-electromagnetic structure for a pressure sensor according to claim 1, wherein The outer side of the second shielding cover (202) is fixedly provided with a ground wire (3), the ground wire (3) is connected with the first shielding cover (201) and the second shielding cover (202) to ground, so as to guide the excess electromagnetic energy into the ground.

3. The anti-electromagnetic structure for a pressure sensor according to claim 1, wherein The connecting part of the first shielding cover (201) and the second shielding cover (202) is provided with a sealing strip (4), and the sealing strip (4) is made of rubber material.

4. The anti-electromagnetic structure for a pressure sensor according to claim 1, wherein The side of the first shielding cover (201) is provided with a heat dissipation hole (5), and the heat dissipation hole (5) is designed in a honeycomb shape.

5. The anti-electromagnetic structure for a pressure sensor according to claim 1, wherein The inner side wall of the second shielding cover (202) is fixedly provided with an embedded ring (6), and the embedded ring (6) is located between the second shielding cover (202) and the sensor body (1) during installation.

6. The anti-electromagnetic structure for a pressure sensor according to claim 1, wherein The first shielding cover (201) and the second shielding cover (202) are made of aluminum as the shell.

7. The anti-electromagnetic structure for a pressure sensor according to claim 1, wherein According to the use requirement, the power supply interface and the signal interface should be respectively provided with a power filter (205) and a signal filter (205).

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