Vibration analyzer based on mobile intelligent terminal

Abstract

The utility model discloses mechanical fault diagnosis technical field especially relates to vibration analyzer based on mobile intelligent terminal, its technical scheme includes mobile terminal and piezoelectric acceleration sensor for acceleration vibration signal conversion, the bottom of piezoelectric acceleration sensor is equipped with cable, the other end of cable is equipped with the signal conditioning and processing module for the pre -processing of signal, signal conditioning and processing module are connected through cable with mobile terminal, the utility model discloses through the setting of upper shield case and lower shield case, can play the effect of electromagnetic shielding, when equipment works in the environment of strong electromagnetism, can reduce the fluctuation of speed signal caused by electromagnetic interference, ensure data reliability, still through the setting of positioning rod, jacks, pull handle, connecting plate, through groove and locating groove, can realize the quick assembly and disassembly of two shield cases, and the maintenance of piezoelectric acceleration sensor is convenient subsequently.

Description

Technical Field

[0001] This invention relates to the field of mechanical fault diagnosis technology, and in particular to a vibration analyzer based on a mobile smart terminal. Background Technology

[0002] A vibration analyzer based on a mobile smart terminal is a technology or equipment system that combines vibration analysis functions with mobile smart terminals such as smartphones and tablets. It utilizes the hardware and software of the mobile terminal to collect, analyze, and diagnose the vibration state of objects, and is widely used in equipment fault diagnosis, structural health monitoring, and industrial maintenance.

[0003] Since most devices do not have an electromagnetic shielding structure on the outside of the sensor, the speed signal wave is large when the device is used in strong electromagnetic environments such as substations and welding machines, which will cause inaccurate data. In view of the above reasons, this application proposes a vibration analyzer based on a mobile smart terminal. Utility Model Content

[0004] The purpose of this invention is to address the problems existing in the background technology by proposing a vibration analyzer based on a mobile smart terminal.

[0005] The technical solution of this utility model is as follows: a vibration analyzer based on a mobile intelligent terminal, including a mobile terminal and a piezoelectric accelerometer for converting acceleration vibration signals. The bottom of the piezoelectric accelerometer is provided with a cable, and the other end of the cable is provided with a signal conditioning and processing module for preprocessing the signal. The signal conditioning and processing module is connected to the mobile terminal through the cable. The piezoelectric accelerometer is provided with a shielding structure for shielding electromagnetic fields.

[0006] The shielding structure includes a lower shielding cover and an upper shielding cover for shielding electromagnetic fields. The top of the lower shielding cover is provided with two insertion holes for limiting positions and two sets of slots. The bottom of the upper shielding cover is provided with two insertion rods for limiting positions and two sets of insertion plates. The insertion plates and slots are compatible, and the insertion holes and insertion rods are compatible. The two sides of the insertion plates are provided with positioning rods for positioning, and the inner walls of the two sides of the slots are provided with positioning holes for positioning.

[0007] Optionally, the thickness of both the upper and lower shields is 1 mm, and the surfaces of both the upper and lower shields are provided with multiple ventilation holes.

[0008] Optionally, the insert plate has storage holes on both sides, and a spring is fixedly installed in the storage hole. The other end of the spring is fixedly connected to the positioning rod. The positioning rod is movably connected to the storage hole, and the positioning rod and the positioning hole are adapted to each other.

[0009] Optionally, a mounting hole is provided on one side of the positioning hole, and two sets of through slots are provided on the lower shield. The through slots communicate with the mounting hole. A connecting plate is movably provided in the through slot. A pull handle and a push rod are fixedly provided at both ends of the connecting plate, respectively. A second spring is fixedly provided on the inner wall of one side of the through slot, and the other end of the second spring is fixedly connected to the connecting plate.

[0010] Optionally, the inner walls on both sides of the through groove are provided with sliding grooves, and the two sides of the connecting plate are fixedly provided with sliders, and the sliders and sliding grooves are movably connected.

[0011] Optionally, multiple uprights are fixedly provided on the inner walls of both the lower and upper shielding covers, and a rubber pad is provided at the end of each upright near the piezoelectric accelerometer.

[0012] Optionally, the pore diameter is 0.05 mm, and the pores are honeycomb-shaped.

[0013] Compared with the prior art, the present invention has the following beneficial technical effects:

[0014] 1. This utility model achieves electromagnetic shielding through the setting of upper and lower shielding covers. When the equipment works in a strong electromagnetic environment, it can reduce speed signal fluctuations caused by electromagnetic interference and ensure data reliability. Furthermore, the setting of positioning rod, top rod, pull handle, connecting plate, through groove and positioning groove enables quick assembly and disassembly of the two shielding covers, which facilitates subsequent maintenance of the piezoelectric accelerometer.

[0015] 2. This utility model uses multiple uprights and ventilation holes. The multiple uprights create a distance between the electric accelerometer and the shielding cover. The ventilation holes optimize heat dissipation. The multiple rubber pads fit the electric accelerometer and prevent the shielding cover from shifting after the two shielding covers are assembled. Attached Figure Description

[0016] Figure 1 A three-dimensional structural schematic diagram of this utility model is provided;

[0017] Figure 2 An exploded first-view schematic diagram of the shielding structure in this utility model is provided.

[0018] Figure 3 A second-view exploded schematic diagram of the shielding structure in this utility model is provided;

[0019] Figure 4 A top-sectional view of the lower shielding cover of this utility model is provided.

[0020] Figure label:

[0021] 1. Mobile terminal;

[0022] 2. Signal conditioning and processing module;

[0023] 3. Piezoelectric accelerometer;

[0024] 4. Shielding structure; 401. Lower shielding cover; 402. Upper shielding cover; 403. Slot; 404. Through slot; 405. Positioning hole; 406. Mounting hole; 407. Insert plate; 408. Storage hole; 409. Spring 1; 410. Positioning rod; 411. Insertion hole; 412. Insertion rod; 413. Connecting plate; 414. Pull handle; 415. Top rod; 416. Spring 2; 417. Upright rod; 418. Vent hole. Detailed Implementation

[0025] The technical solutions of this disclosure will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments.

[0026] The components of the embodiments of this disclosure, which are typically described and shown in the accompanying drawings, can be arranged and designed in a variety of different configurations. Therefore, the following detailed description of embodiments of this disclosure provided in the drawings is not intended to limit the scope of the claimed disclosure, but merely to illustrate selected embodiments of the disclosure.

[0027] Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this disclosure.

[0028] In the description of this disclosure, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0029] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0030] Example

[0031] like Figure 1-4As shown, the vibration analyzer based on a mobile smart terminal proposed in this utility model includes a mobile terminal 1 and a piezoelectric accelerometer 3 for converting acceleration vibration signals. The bottom of the piezoelectric accelerometer 3 is provided with a cable, and the other end of the cable is provided with a signal conditioning and processing module 2 for preprocessing the signal. The signal conditioning and processing module 2 is connected to the mobile terminal 1 through the cable. The piezoelectric accelerometer 3 is provided with a shielding structure 4 for shielding electromagnetic fields.

[0032] The shielding structure 4 includes a lower shielding cover 401 and an upper shielding cover 402 for electromagnetic shielding. Both the upper shielding cover 402 and the lower shielding cover 401 are 1 mm thick. Multiple vent holes 418 are provided on the surface of both the upper shielding cover 402 and the lower shielding cover 401. The vent holes 418 have a diameter of 0.05 mm and are honeycomb-shaped. Both the lower shielding cover 401 and the upper shielding cover 402 are made of permalloy. The top of the lower shielding cover 401 has two insertion holes 41 for limiting movement. The upper shield 402 has two sets of slots 403 and two sets of insertion plates 407 at its bottom. The insertion plates 407 are compatible with the slots 403, and the insertion holes 411 are compatible with the insertion rods 412. The two sides of the insertion plates 407 are provided with positioning rods 410 for positioning. The inner walls of both sides of the slots 403 are provided with positioning holes 405 for positioning. The two sides of the insertion plates 407 are provided with storage holes 408. A spring 409 is fixedly installed in the storage hole 408. The other end of the first shield 409 is fixedly connected to the positioning rod 410. The positioning rod 410 is movably connected to the storage hole 408. The positioning rod 410 is adapted to the positioning hole 405. The positioning hole 405 has a mounting hole 406 on one side. The lower shield 401 has two sets of through grooves 404. The through grooves 404 are connected to the mounting holes 406. The connecting plate 413 is movably installed in the through groove 404. The inner walls on both sides of the through groove 404 are provided with sliding grooves. The two sides of the connecting plate 413 are fixedly provided with sliders. The sliders are movably connected to the sliding grooves. The two ends of the connecting plate 413 are respectively fixedly provided with a pull handle 414 and a top rod 415. The inner wall on one side of the through groove 404 is fixedly provided with a second spring 416. The other end of the second spring 416 is fixedly connected to the connecting plate 413. The upper shield 401 and the lower shield 402 are set outside the electric accelerometer 3. They can not only protect the electric accelerometer 3, but also reduce speed signal fluctuations caused by electromagnetic interference and ensure data reliability.

[0033] Multiple uprights 417 are fixedly installed on the inner walls of both the lower shield 401 and the upper shield 402. A rubber pad is provided at one end of the upright 417 near the piezoelectric accelerometer 3. The arrangement of multiple uprights 417 can create a distance between the piezoelectric accelerometer 3 and the shield. Combined with the arrangement of the vent 418, the heat dissipation effect can be optimized. The multiple rubber pads are in contact with the piezoelectric accelerometer 3, which can prevent the shield from shifting after the two shields are assembled.

[0034] In this embodiment, the upper shield 401 and lower shield 402 can reduce speed signal fluctuations caused by electromagnetic interference and improve the reliability of the acquired data. Before use, the upper shield 402 and lower shield 401 are assembled and placed outside the piezoelectric accelerometer 3. Each set of positioning rods 410 is pressed inward, and the positioning rods 410 compress the spring 409. After the positioning rods 410 are fully retracted into the storage hole 408, multiple insert plates 407 are inserted into the corresponding slots 403. When the positioning rods 410 move to the position of the positioning hole 405, the spring 409 causes the positioning rods 410 to reset and insert into the positioning hole 405, thereby completing the positioning of the insert plates 407 and realizing the assembly of the upper shield 402 and lower shield 401. At this point, one end of each of the multiple uprights 417 is in contact with the outside of the piezoelectric accelerometer 3. The uprights 417 allow the shield to be placed at a distance from the piezoelectric accelerometer 3, which facilitates heat dissipation of the piezoelectric accelerometer 3. The two shields made of permalloy can reduce speed signal fluctuations caused by electromagnetic interference and improve data accuracy. When the two shields need to be disassembled later, the multiple pull handles 414 are pressed together in a direction closer to each other. The pull handles 414 drive the connecting plate 413, which in turn drives the top rod 415. The top rod 415 then presses the positioning rod 410. When the positioning rod 410 retracts into the storage hole 408, the two shields are pulled apart in a direction further away from each other, thus completing the disassembly of the two shields.

[0035] The above specific embodiments are merely several optional embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A vibration analyzer based on a mobile intelligent terminal, comprising a mobile terminal (1) and a piezoelectric accelerometer (3) for converting acceleration vibration signals, wherein the bottom of the piezoelectric accelerometer (3) is provided with a cable, and the other end of the cable is provided with a signal conditioning and processing module (2) for preprocessing the signal, the signal conditioning and processing module (2) being connected to the mobile terminal (1) via the cable, characterized in that: The piezoelectric accelerometer (3) is provided with a shielding structure (4) for shielding electromagnetic fields. The shielding structure (4) includes a lower shielding cover (401) and an upper shielding cover (402) for shielding electromagnetic fields. The top of the lower shielding cover (401) is provided with two insertion holes (411) for limiting and two sets of slots (403). The bottom of the upper shielding cover (402) is provided with two insertion rods (412) for limiting and two sets of insertion plates (407). The insertion plates (407) and slots (403) are adapted to each other. The insertion holes (411) and insertion rods (412) are adapted to each other. The two sides of the insertion plates (407) are provided with positioning rods (410) for positioning. The inner walls of both sides of the slots (403) are provided with positioning holes (405) for positioning.

2. The vibration analyzer based on a mobile intelligent terminal according to claim 1, characterized in that, The thickness of the upper shield (402) and the lower shield (401) is 1 mm, and the surfaces of the upper shield (402) and the lower shield (401) are provided with multiple ventilation holes (418).

3. The vibration analyzer based on a mobile intelligent terminal according to claim 1, characterized in that, The insert plate (407) has storage holes (408) on both sides. A spring (409) is fixedly installed in the storage hole (408). The other end of the spring (409) is fixedly connected to the positioning rod (410). The positioning rod (410) is movably connected to the storage hole (408). The positioning rod (410) is adapted to the positioning hole (405).

4. The vibration analyzer based on a mobile intelligent terminal according to claim 1, characterized in that, The positioning hole (405) has a mounting hole (406) on one side. The lower shield (401) has two sets of through slots (404). The through slots (404) are connected to the mounting hole (406). A connecting plate (413) is movably installed in the through slot (404). A pull handle (414) and a push rod (415) are fixed at both ends of the connecting plate (413). A second spring (416) is fixed on the inner wall of one side of the through slot (404). The other end of the second spring (416) is fixedly connected to the connecting plate (413).

5. The vibration analyzer based on a mobile intelligent terminal according to claim 4, characterized in that, The inner walls on both sides of the through groove (404) are provided with sliding grooves, and the two sides of the connecting plate (413) are fixedly provided with sliders, and the sliders and sliding grooves are movably connected.

6. The vibration analyzer based on a mobile intelligent terminal according to claim 1, characterized in that, The inner walls of the lower shield (401) and the upper shield (402) are each fixed with a number of uprights (417), and the end of the upright (417) near the piezoelectric accelerometer (3) is provided with a rubber pad.

7. The vibration analyzer based on a mobile intelligent terminal according to claim 2, characterized in that, The vent (418) has a diameter of 0.05 mm and is honeycomb-shaped.

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