Wireless Passive Vibration Sensor

Abstract

The present invention relates to a wireless passive vibration sensor, comprising a shell, a connecting seat fixedly installed at the bottom of the shell, a sensor seat fixedly installed at the bottom of the connecting seat, a rotating rod rotatably installed on the right side of the shell, a signal line fixedly installed at the right end of the rotating rod, and a piezoelectric-electromagnetic composite power generation terminal fixedly installed inside the shell. The present invention adds a mechanism for heat dissipation inside the wireless passive vibration sensor, uses air cooling to dissipate heat from the internal components of the wireless passive vibration sensor, cooperates with an internal heat conduction plate that can quickly conduct heat, and uses a fan to cool the heat conduction plate and dissipate heat. After cooling, the heat conduction rod will continue to absorb heat due to the heat conduction effect to dissipate heat inside the wireless passive vibration sensor, ensuring that the internal components of the wireless passive vibration sensor will not be damaged by high temperature, thereby increasing the service life of the wireless passive vibration sensor.

Description

Technical Field

[0001] The invention relates to the technical field of wireless vibration sensors, in particular to a wireless passive vibration sensor. Background Art

[0002] Wireless vibration sensor is a machine status monitoring based on wireless technology. It has vibration measurement and temperature measurement functions, simple operation, and automatic status alarm indication. It is used in industrial equipment status management and monitoring control systems; it is suitable for on-site equipment operation and maintenance personnel to monitor equipment status, find problems in time, and ensure the normal and reliable operation of equipment. Vibration measurement is designed using the positive piezoelectric effect of quartz crystal and artificial polarized ceramic. When quartz crystal or artificial polarized ceramic is subjected to mechanical stress, electric charge is generated on its surface, thereby converting the vibration signal into an electrical signal. The charge amplifier and the integrator circuit process the input electrical signal and convert it into the acceleration, velocity, and displacement value of the vibration.

[0003] For example, the passive wireless vibration monitoring sensor proposed in 202222295043.X provides the electrical energy required for the sensor to work by collecting vibration energy, solving the problem that existing wireless sensors cannot be effectively powered. The monitoring signal is transmitted wirelessly, which reduces the sensor installation cost and overcomes the problem of difficult wiring of traditional sensors on rotating electromechanical equipment.

[0004] However, the wireless passive vibration sensor of the prior art still has the problem of inconvenient disassembly and assembly. When the internal part is repaired, the wireless passive vibration sensor is difficult to disassemble, which makes the repair process complicated. The repair is difficult, and the internal part does not have a heat dissipation structure, which causes the heat generated by the wireless passive vibration sensor when it is working to be unable to be quickly dispersed. Excessive heat will cause damage to the internal components of the wireless passive vibration sensor, making the service life of the wireless passive vibration sensor short. Therefore, a new type of wireless passive vibration sensor is proposed to solve the above problems. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides a wireless passive vibration sensor, which has the advantages of convenient disassembly and assembly and good heat dissipation effect, and solves the problem that the wireless passive vibration sensor of the prior art is still inconvenient to disassemble and assemble. When the internal part is repaired, the wireless passive vibration sensor is difficult to disassemble, which makes the repair process complicated. The maintenance is difficult, and there is no heat dissipation structure inside, which causes the heat generated by the wireless passive vibration sensor when it is working to be unable to be quickly dispersed. Excessive heat will cause damage to the internal components of the wireless passive vibration sensor, resulting in a short service life of the wireless passive vibration sensor.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a wireless passive vibration sensor, comprising a shell, a connecting seat is fixedly installed at the bottom of the shell, a sensor seat is fixedly installed at the bottom of the connecting seat, a rotating rod is rotatably installed on the right side of the shell, a signal line is fixedly installed on the right end of the rotating rod, a piezoelectric-electromagnetic composite power generation terminal is fixedly installed inside the shell, a heat dissipation mechanism is fixedly and movably installed inside the shell, and a connecting structure is arranged at the bottom of the shell;

[0007] The heat dissipation mechanism comprises a heat dissipation cylinder, a heat dissipation cylinder is installed inside the shell and below the piezoelectric-electromagnetic composite power generation terminal, a top heat dissipation net is fixedly installed inside the heat dissipation cylinder, a heat conduction plate is fixedly installed inside the heat dissipation cylinder, a mounting plate is fixedly installed inside the heat dissipation cylinder, a bottom ventilation net is fixedly installed inside the heat dissipation cylinder, slide grooves are provided on the left and right sides of the heat dissipation cylinder, a heat dissipation fan is fixedly installed on the top of the mounting plate, limit blocks are fixedly installed on the left and right sides of the inner wall of the shell, and two electric push rods are fixedly installed on the bottom of the heat dissipation cylinder;

[0008] The connecting structure includes a mounting groove provided inside the shell, a plug rod inserted at the bottom of the shell, a limit plate rotatably installed inside the mounting groove, a connecting pin fixedly installed on the outer surface of the connecting seat, a connecting shaft rotatably installed between the limit plate and the inner wall of the mounting groove, a positioning plate fixedly installed on the end of the limit plate, a placement groove provided on the outer surface of the plug rod, an insert tube movably installed on the top of the plug rod, an inner core fixedly installed inside the plug rod, and a connecting spring fixedly installed on the top of the inner core.

[0009] Preferably, the heat dissipation mechanism is movably installed below the piezoelectric-electromagnetic composite power generation terminal, and the heat conduction plate and the mounting plate are located between the top heat dissipation net and the bottom ventilation net.

[0010] Preferably, the cooling fan is located below the heat conducting plate, and the limiting block is slidably installed inside the sliding groove.

[0011] Preferably, the end of the electric push rod is fixedly connected to the inner wall of the shell, and the heat dissipation tube is movably installed inside the shell by being driven by the electric push rod.

[0012] Preferably, three mounting grooves are arranged in a ring shape, the insertion rods correspond to the three mounting grooves, three connecting pins are designed, and the connecting pins are clamped in the interior of the mounting grooves.

[0013] Preferably, the limiting plate is rotatably mounted inside the mounting groove via a connecting shaft, and two limiting plates are rotatably mounted inside the same mounting groove.

[0014] Preferably, the two positioning pieces are clamped on the outer surface of the insertion rod, and the top end diameter of the insertion rod is larger than the bottom end diameter and is tapered.

[0015] Preferably, the inner core is movably mounted inside the insert tube via a connecting spring, and the top end of the insert tube is fixedly connected to the inner wall of the mounting groove.

[0016] Preferably, the positioning piece is clamped on the upper end of the plug rod, and the limiting piece is clamped on the bottom of the connecting pin.

[0017] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0018] 1. The present invention adds a mechanism for heat dissipation inside the wireless passive vibration sensor, and uses air cooling to dissipate heat from the internal components of the wireless passive vibration sensor. In combination with an internal heat conducting plate that can quickly conduct heat, the heat generated by the internal components of the wireless passive vibration sensor can be quickly transferred to the heat conducting plate, and the heat conducting plate is cooled and dissipated by a fan. After cooling, the heat conducting rod will continue to absorb heat due to the heat conduction effect to dissipate heat inside the wireless passive vibration sensor, thereby ensuring that the internal components of the wireless passive vibration sensor will not be damaged by high temperature and increasing the service life of the wireless passive vibration sensor.

[0019] 2. The present invention adopts a locking structure that can be quickly connected to install the wireless passive vibration sensor. When installing and disassembling, it is only necessary to press to release the limit of the locking structure, abandoning the traditional threaded or integrated connection method. It is more convenient to open when repairing the inside of the wireless passive vibration sensor, reducing the difficulty of maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention;

[0021] Figure 2 It is a front cross-sectional view of the housing of the present invention;

[0022] Figure 3 It is a front cross-sectional view of the heat dissipation mechanism of the present invention;

[0023] Figure 4 This is a bottom sectional view of the heat dissipation tube of the present invention;

[0024] Figure 5 A bottom view of the housing of the present invention;

[0025] Figure 6 It is a schematic diagram of the connection structure of the present invention;

[0026] Figure 7 It is a schematic diagram of the inner core structure of the present invention.

[0027] In the figure: 1. shell; 2. connecting seat; 3. sensor seat; 4. rotating rod; 5. signal line; 6. piezoelectric-electromagnetic composite power generation terminal; 7. heat dissipation mechanism; 701. heat dissipation tube; 702. top heat dissipation net; 703. heat conduction plate; 704. mounting plate; 705. bottom ventilation net; 706. slide groove; 707. cooling fan; 708. limit block; 709. electric push rod; 8. connecting structure; 801. mounting groove; 802. plug rod; 803. limit plate; 804. connecting pin; 805. connecting shaft; 806. positioning plate; 807. placement groove; 808. plug tube; 809. inner core; 810. connecting spring. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figure 1-7 The wireless passive vibration sensor in this embodiment includes a housing 1, a connecting seat 2 is fixedly installed at the bottom of the housing 1, a sensor seat 3 is fixedly installed at the bottom of the connecting seat 2, a rotating rod 4 is rotatably installed on the right side of the housing 1, a signal line 5 is fixedly installed on the right end of the rotating rod 4, a piezoelectric-electromagnetic composite power generation terminal 6 is fixedly installed inside the housing 1, a heat dissipation mechanism 7 is fixedly and movably installed inside the housing 1, and a connecting structure 8 is provided at the bottom of the housing 1;

[0030] The heat dissipation mechanism 7 includes a heat dissipation tube 701, a heat dissipation tube 701 is installed inside the shell 1 and below the piezoelectric-electromagnetic composite power generation terminal 6, a top heat dissipation net 702 is fixedly installed inside the heat dissipation tube 701, a heat conducting plate 703 is fixedly installed inside the heat dissipation tube 701, a mounting plate 704 is fixedly installed inside the heat dissipation tube 701, a bottom ventilation net 705 is fixedly installed inside the heat dissipation tube 701, slide grooves 706 are provided on the left and right sides of the heat dissipation tube 701, a heat dissipation fan 707 is fixedly installed on the top of the mounting plate 704, a limiting block 708 is fixedly installed on the left and right sides of the inner wall of the shell 1, and two electric push rods 709 are fixedly installed at the bottom of the heat dissipation tube 701;

[0031] The connecting structure 8 includes a mounting groove 801 provided inside the outer shell 1, a plug rod 802 inserted at the bottom of the outer shell 1, a limiting plate 803 rotatably installed inside the mounting groove 801, a connecting pin 804 fixedly installed on the outer surface of the connecting seat 2, a connecting shaft 805 rotatably installed between the limiting plate 803 and the inner wall of the mounting groove 801, a positioning plate 806 fixedly installed at the end of the limiting plate 803, a placement groove 807 provided on the outer surface of the plug rod 802, an insert tube 808 movably installed on the top of the plug rod 802, an inner core 809 fixedly installed inside the plug rod 802, and a connecting spring 810 fixedly installed on the top of the inner core 809.

[0032] In this embodiment, in order to ensure that the wireless passive vibration sensor has good heat dissipation, the heat dissipation mechanism 7 is movably installed below the piezoelectric-electromagnetic composite power generation terminal 6, and the heat dissipation mechanism 7 is controlled to move up and down inside the shell 1 by the electric push rod 709. During the movement, the limit block 708 will move along the slide groove 706. The up and down movement can perform heat dissipation treatment on different positions inside the shell 1, and the internal components of the wireless passive vibration sensor are cooled by air cooling. With the internal heat conduction plate 703 that can quickly conduct heat, the heat generated by the internal components of the wireless passive vibration sensor can be quickly transferred to the heat conduction plate 703, and the heat conduction plate 703 is cooled and dissipated by the fan. After cooling, the heat conduction plate 703 will continue to absorb heat due to the heat conduction effect to perform heat dissipation treatment on the inside of the wireless passive vibration sensor, ensuring that the internal components of the wireless passive vibration sensor will not be damaged by high temperature, thereby improving the service life of the wireless passive vibration sensor.

[0033] It should be noted that piezoelectric-electromagnetic composite vibration energy harvesting technology is a new type of composite power generation technology. Piezoelectric-electromagnetic composite vibration energy harvesting technology is relatively easy to implement. Its basic principle is to replace the mass block at the end of the vibrator of the cantilever beam piezoelectric power generation device with a permanent magnet, and place an induction coil at a reasonable position. When the permanent magnet vibrates with the cantilever beam, it cuts the induction coil, and an induced current is generated inside the closed coil, thereby realizing the coupling of the two energy harvesting methods of piezoelectric and electromagnetic.

[0034] In this embodiment, three mounting grooves 801 are designed to fix the housing 1 and the connecting seat 2 together, the insertion rod 802 is adapted to the positions of the three mounting grooves 801, and the purpose of the clamping is achieved through three connecting pins 804. The limit plate 803 is rotatably installed in the interior of the mounting groove 801 through the connecting shaft 805, and two limit plates 803 are rotatably installed in the interior of the same mounting groove 801, and two positioning plates 806 are clamped on the outer surface of the insertion rod 802. The top diameter of the insertion rod 802 is larger than the bottom diameter and is conical. The inner core 809 is movably installed in the interior of the insertion tube 808 through the connecting spring 810. The top of the insertion tube 808 is fixedly connected to the inner wall of the mounting groove 801. During the process, the connecting pin 804 is clamped in the inside of the installation groove 801, the positioning piece 806 is clamped on the upper end of the plug rod 802, and the limit piece 803 is clamped on the bottom of the connecting pin 804. When disassembly is required, the three inner cores 809 are pressed inwardly, and the inner core 809 will drive the plug rod 802 to move toward the inside of the plug tube 808, so that the connecting spring 810 contracts. At this time, the plug rod 802 will push the positioning piece 806, so that the positioning piece 806 drives the limit piece 803 to rotate around the connecting shaft 805. The rotation will cause the limit piece 803 to rotate outward, so that the connecting pin 804 loses its limit, and the connecting seat 2 can be plugged in from the bottom of the shell 1 to facilitate the maintenance of the inside of the shell 1.

[0035] In summary, the present invention uses a locking structure that can be quickly connected to install the wireless passive vibration sensor. When installing and disassembling, it is only necessary to release the limit of the locking structure by pressing, abandoning the traditional threaded or integrated connection method. It is more convenient to open when repairing the inside of the wireless passive vibration sensor, reducing the difficulty of maintenance, and solving the problem that the wireless passive vibration sensor in the prior art is still inconvenient to disassemble and assemble. When repairing the inside, the wireless passive vibration sensor is difficult to disassemble, making the repair process complicated. The maintenance is difficult, and there is no heat dissipation structure inside, resulting in the heat generated by the wireless passive vibration sensor when working cannot be quickly dispersed. Excessive heat will cause damage to the internal components of the wireless passive vibration sensor, resulting in a shorter service life of the wireless passive vibration sensor.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wireless passive vibration sensor, comprising a housing (1), characterized in that: A connecting seat (2) is fixedly mounted on the bottom of the housing (1), a sensor seat (3) is fixedly mounted on the bottom of the connecting seat (2), a rotating rod (4) is rotatably mounted on the right side of the housing (1), a signal line (5) is fixedly mounted on the right end of the rotating rod (4), a piezoelectric-electromagnetic composite power generation terminal (6) is fixedly mounted inside the housing (1), a heat dissipation mechanism (7) is fixedly and movably mounted inside the housing (1), and a connecting structure (8) is provided at the bottom of the housing (1); The heat dissipation mechanism (7) comprises a heat dissipation tube (701), a heat dissipation tube (701) is movably installed inside the shell (1) and below the piezoelectric-electromagnetic composite power generation terminal (6), a top heat dissipation net (702) is fixedly installed inside the heat dissipation tube (701), a heat conduction plate (703) is fixedly installed inside the heat dissipation tube (701), a mounting plate (704) is fixedly installed inside the heat dissipation tube (701), a bottom ventilation net (705) is fixedly installed inside the heat dissipation tube (701), sliding grooves (706) are provided on both left and right sides of the heat dissipation tube (701), a heat dissipation fan (707) is fixedly installed on the top of the mounting plate (704), limit blocks (708) are fixedly installed on both left and right sides of the inner wall of the shell (1), and two electric push rods (709) are fixedly installed on the bottom of the heat dissipation tube (701); The connection structure (8) comprises a housing (1) having a mounting groove (801) formed inside, a plug rod (802) inserted at the bottom of the housing (1), a limit plate (803) rotatably mounted inside the mounting groove (801), a connecting pin (804) fixedly mounted on the outer surface of the connection seat (2), a connecting shaft (805) rotatably mounted between the limit plate (803) and the inner wall of the mounting groove (801), a positioning plate (806) fixedly mounted at the end of the limit plate (803), a placement groove (807) formed on the outer surface of the plug rod (802), an insert tube (808) movably mounted on the top of the plug rod (802), an inner core (809) fixedly mounted inside the plug rod (802), and a connecting spring (810) fixedly mounted on the top of the inner core (809).

2. The wireless passive vibration sensor according to claim 1, characterized in that: The heat dissipation mechanism (7) is movably installed below the piezoelectric-electromagnetic composite power generation terminal (6), and the heat conduction plate (703) and the mounting plate (704) are located between the top heat dissipation net (702) and the bottom ventilation net (705).

3. The wireless passive vibration sensor according to claim 1, characterized in that: The cooling fan (707) is located below the heat conducting plate (703), and the limiting block (708) is slidably installed inside the sliding groove (706).

4. The wireless passive vibration sensor according to claim 1, characterized in that: The end of the electric push rod (709) is fixedly connected to the inner wall of the outer shell (1), and the heat dissipation cylinder (701) is driven and movably installed inside the outer shell (1) by the electric push rod (709).

5. The wireless passive vibration sensor according to claim 1, characterized in that: The installation grooves (801) are provided in three ring shapes, the insertion rods (802) correspond to the three installation grooves (801), and the connection pins (804) are designed in three numbers, and the connection pins (804) are clamped in the interior of the installation grooves (801).

6. The wireless passive vibration sensor according to claim 1, characterized in that: The limiting plate (803) is rotatably mounted inside the mounting groove (801) via a connecting shaft (805), and two limiting plates (803) are rotatably mounted inside the same mounting groove (801).

7. The wireless passive vibration sensor according to claim 1, characterized in that: The two positioning pieces (806) are clamped on the outer surface of the insertion rod (802), and the top diameter of the insertion rod (802) is larger than the bottom diameter and is tapered.

8. The wireless passive vibration sensor according to claim 1, characterized in that: The inner core (809) is movably mounted inside the insert tube (808) via a connecting spring (810), and the top end of the insert tube (808) is fixedly connected to the inner wall of the mounting groove (801).

9. The wireless passive vibration sensor according to claim 1, characterized in that: The positioning piece (806) is clamped on the upper end of the plug rod (802), and the limiting piece (803) is clamped on the bottom of the connecting pin (804).

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