CN220893581U - Reciprocating frequency detection device - Google Patents
Reciprocating frequency detection device Download PDFInfo
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- CN220893581U CN220893581U CN202322367608.5U CN202322367608U CN220893581U CN 220893581 U CN220893581 U CN 220893581U CN 202322367608 U CN202322367608 U CN 202322367608U CN 220893581 U CN220893581 U CN 220893581U
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- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 51
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- CXQXSVUQTKDNFP-UHFFFAOYSA-N octamethyltrisiloxane Chemical compound C[Si](C)(C)O[Si](C)(C)O[Si](C)(C)C CXQXSVUQTKDNFP-UHFFFAOYSA-N 0.000 claims description 22
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- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The utility model discloses a reciprocating frequency detection device, which comprises a device body, wherein the device body is made of an insulating material, a channel is arranged in the device body, a vibrating body is arranged in the channel, and when the device body moves along with a reciprocating object, the vibrating body can reciprocate from one end to the other end along the channel; one end of the channel is provided with a stop block, one side surface of the stop block seals the corresponding end of the channel, and the binding capacity of atomic check electrons of the side surface adopted material is larger than that of the atomic check electrons of the vibrator material; be provided with metal structure in the dog, and metal structure passes through the wire and connects the check out test set of setting at the device body outside, and check out test set is used for detecting current signal. The sensor is driven by mechanical energy of a reciprocating object, so that self-driving of the sensor can be realized, external power supply or battery power supply is not needed, a sensing structure is simplified, and the volume of the sensor is reduced.
Description
Technical Field
The utility model relates to the technical field of testing, in particular to a reciprocating frequency detection device.
Background
The existing vibration sensors are various in variety, the internal electromechanical transformation principles of various sensors are different, the output electric quantity is different, most of the vibration sensors are powered by an external power supply or energy storage equipment such as batteries and the like, so that the sensors are complex in structure and occupy a large space, and a lot of inconvenience is brought to the use of the sensors.
Disclosure of utility model
The technical problem to be solved by the utility model is to provide the reciprocating frequency detection device which directly drives the sensor to be detected to move mechanically without depending on an external power supply or a battery.
In order to solve the technical problem, the device for detecting the frequency of a reciprocating motion object comprises a device body, wherein the device body is made of an insulating material, a channel is arranged in the device body, a vibrating body is arranged in the channel, and when the device body moves along with the reciprocating motion object, the vibrating body can reciprocate from one end to the other end along the channel; one end of the channel is provided with a stop block, one side surface of the stop block seals the corresponding end of the channel, and the binding capacity of atomic check electrons of the side surface adopted material is larger than that of the vibrator material; the stop block is internally provided with a metal structure, the metal structure is connected with detection equipment arranged outside the device body through a wire, and the detection equipment is used for detecting current signals.
In the above reciprocating frequency detecting device, when the vibrator contacts the stopper, because the capability of checking electrons by the material atoms on the side of the vibrator and the stopper is different, there is electron migration, a contact electrification phenomenon is generated, and when the two are separated after contact, the obtained or lost state is kept, so that the side of the vibrator is negatively charged, electrostatic induction is generated on the metal structure inside the stopper, induced current is generated in the metal structure and the connecting wire, the detection device detects that the vibrator is positively charged, and the induced current is continuously generated in the metal structure and the connecting wire along with the reciprocating movement of the vibrator, and further the frequency of the reciprocating object can be further obtained through the output of the detection device, thereby realizing that the sensor is driven by the mechanical energy of the reciprocating object, no longer relying on an external power supply or a battery to supply power, simplifying the sensing structure, and reducing the volume of the sensor.
As an improvement of the reciprocating frequency detection device, the stop block comprises a metal sheet layer and a first covering layer arranged on one side surface of the metal sheet layer, wherein the metal sheet layer is connected with the detection equipment through a wire; the first cover layer blocks the channel.
Further, a second covering layer is arranged on the other side face of the metal sheet layer.
Further, the metal sheet layer is made of metal nickel.
Furthermore, the first covering layer and the second covering layer are both made of PDMS materials, and the thickness of the first covering layer and the second covering layer is 0.3-0.8 mm.
As another improvement of the reciprocating frequency detection device, the stop block is formed by filling and wrapping a foam nickel block with PDMS material, and the foam nickel block is connected with the detection equipment through a wire.
Furthermore, the PDMS material of the stop block is wrapped on the surface of the foam nickel block, and the thickness of the PDMS material is 0.3-0.8 mm.
As a further improvement of the reciprocating frequency detection device, the device body is in a cylindrical shape with one end sealed, and the inner cylinder hole forms the straight hole-shaped channel.
Further, the stop block is cylindrical, and the radius of the stop block is equal to the radius of the outer circle of the device body.
Further, the stopper is fixed to the opening end of the device body by an adhesive tape.
As a further improvement of the reciprocating frequency detecting device, the vibrator is in a sphere shape and is made of nylon, copper, aluminum or rubber materials.
As a further improvement of the reciprocation frequency detecting device of the present utility model, the detecting means includes an ammeter or an oscilloscope.
In summary, by adopting the reciprocating frequency detection device, the mechanical motion information to be detected is directly converted into the electric signal, that is, the sensor is driven by the mechanical energy of the reciprocating object, so that the self-driving of the sensor can be realized, the external power supply or the battery power supply is not needed any more, the sensing structure is simplified, and the volume of the sensor is reduced.
Drawings
In the drawings:
Fig. 1 is a sectional view of a device body of a reciprocating frequency detecting device according to the present utility model.
Fig. 2 is a view showing a construction of the apparatus for detecting a reciprocating frequency of the present utility model when in use.
Fig. 3 is an output diagram of the detecting device of the reciprocating frequency detecting apparatus of the present utility model.
Fig. 4 is a schematic view of the device for detecting the reciprocating frequency of the present utility model when the vibrator contacts the stopper.
Fig. 5 is an electronic movement schematic diagram of the vibrator of the reciprocating frequency detecting apparatus of the present utility model away from the stopper.
Fig. 6 is a schematic view of the device for detecting the reciprocating frequency of the present utility model when the vibrator approaches the stopper.
Fig. 7 is an electronic movement schematic diagram of a vibrator contacting a stopper of the reciprocating frequency detecting apparatus of the present utility model.
Reference numerals illustrate: 1. a device body; 11. a channel; 2. a stop block; 21. a metal sheet layer; 22. a first cover layer; 23. a second cover layer; 3. a detection device; 4. a vibrator; 5. and reciprocating the object.
Detailed Description
The following describes the embodiments of the present utility model further with reference to the drawings. The description of these embodiments is provided to assist understanding of the present utility model, but is not intended to limit the present utility model.
Figures 1-7 illustrate a reciprocation frequency detection arrangement of the present utility model. As shown in fig. 1 and 2, the reciprocating frequency detecting device is used for detecting the frequency of a reciprocating object 5, and comprises a device body 1, wherein the device body 1 is made of an insulating material, a channel 11 is arranged in the device body 1, a vibrator 4 is arranged in the channel 11, and when the device body 1 moves along with the reciprocating object 5, the vibrator 4 can reciprocate from one end to the other end along the channel 11; one end of the channel 11 is provided with a stop block 2, one side surface of the stop block 2 seals the corresponding end of the channel 11, and the binding capacity of atomic check electrons of the side surface adopted material is larger than that of the atomic check electrons of the material of the vibrator 4; a metal structure is arranged in the stop block 2, and the metal structure is connected with a detection device 3 arranged outside the device body 1 through a wire, and the detection device 3 is used for detecting a current signal. The oscillating body 4 can reciprocate from one end to the other end along the channel 11, i.e. can reciprocate between the two ends along the channel 11, and is in contact with the stopper 2 once per reciprocation.
The stopper 2 needs to be in contact with the vibrator 4 to generate electricity, and the charges generated on the contact surface need to induce electrostatic induction of the internal metal structure, and the stopper 2 structure meeting such requirements includes, but is not limited to, the following ①②.
① As shown in fig. 1, the stopper 2 includes a metal sheet layer 21 and a first cover layer 22 provided on one side surface of the metal sheet layer 21, the metal sheet layer 21 being connected to the detecting device 3 by a wire; the first cover layer 22 blocks the channel 11.
Optionally, a second cover layer 23 is disposed on the other side of the metal sheet layer 21, so as to perform better insulation protection on the metal sheet layer 21. The metal sheet layer 21 is made of metal nickel, and has good conductivity. The first cover layer 22 and the second cover layer 23 are made of PDMS materials, the thickness is 0.3-0.8 mm, the thickness is thinner, and the statically determinate induction effect is more obvious.
② The stop block 2 is formed by filling and wrapping a foam nickel block with PDMS material, and the foam nickel block is connected with the detection device 3 through a wire. The foam nickel is of a porous structure, PDMS material is permeated and filled into the pore structure of the foam nickel block, and a film layer with a certain thickness is formed on the surface of the foam nickel block.
The foam nickel is of a porous structure and has conductivity, and is used for connecting an external circuit to detect signals. PDMSpolydimethylsiloxane polydimethylsiloxane is a colorless, viscous liquid at room temperature and is therefore known as silicone oil; the PDMS material is an optically transparent elastomer material formed by coupling reaction of macromolecular polydimethylsiloxane terminal active groups and a curing agent to complete the curing process. PDMS material may thus be filled into the pores of the nickel foam and wrapped around the nickel foam blocks to form the stop 2.
It should be noted that, the PDMS material fills and encapsulates the foam nickel block, and the following is literature: fully stretchable triboelectric nanogenerator for ENERGY HARVESTING AND SELF-powered sensing describes the related art, and the present utility model does not relate to new materials technology. The preparation and acquisition methods can be described in the above documents, or the following methods can be used:
PDMS elastomer and curing agent were mixed at 10:1, and uniformly stirring the mixture by using a glass rod. The PDMS mixed solution was then vacuum degassed with a vacuum bubble removal pump for 20min to remove bubbles. And cleaning the foam nickel by using an ultrasonic instrument for 5 minutes, airing, uniformly coating the PDMS mixed solution on the surface of the foam nickel, ensuring that the PDMS mixed solution fully wraps and permeates the foam nickel, and ensuring that the surface thickness is not more than 0.5mm, so that the porous structure of the foam nickel is fully exposed on the surface of the PDMS film. Next, the foam nickel fully coated with PDMS was placed on a spin stand, set at 1000 revolutions per minute, and spin for 1min. After the spin coating is completed, the sample is placed in a vacuum drying oven, the set temperature is 100 ℃, and the drying time is 30min. Through the steps, the preparation of the foam nickel-PDMS composite material is completed.
Optionally, the PDMS material of the stop block 2 is wrapped on the surface of the foam nickel block, and the thickness of the PDMS material is 0.3-0.8 mm. The thickness is thinner, and the statically indeterminate induction effect is more obvious.
Alternatively, the device body 1 has a cylindrical shape with one end sealed, and the inner cylinder hole forms a straight hole-shaped channel 11. The channel 11 is linear, and the vibrator 4 can reciprocate along the straight line, so that the frequency detection of the straight line reciprocation is better suitable. In addition, the device body 1 is made of polypropylene plastic, and has good insulation effect.
Optionally, the stop block 2 is in a cylindrical block shape, and the radius is equal to the radius of the outer circle of the device body 1.
Optionally, the stopper 2 is fixed to the open end of the device body 1 by an adhesive tape.
Alternatively, the vibrator 4 is spherical and made of nylon, copper, aluminum or rubber material, and can slide freely inside along the channel 11.
Optionally, the detection device 3 comprises an ammeter or oscilloscope. The foam nickel in the stop block 2 is led out to the input end of an ammeter or an oscillograph through a lead, and then the other end of the ammeter or the oscillograph is grounded to form a detection circuit.
In use, as shown in fig. 2, taking a linear motor as an example, the device body 1 is fixed on the output end of the linear motor, and the channels 11 are arranged along the reciprocating direction of the output end of the linear motor. The device body 1 reciprocates along with the output end of the linear motor, the vibration body 4 also reciprocates from one end to the other end in the channel 11, so that the stop block 2 is periodically contacted with the vibration body 4, and a periodic current signal is displayed on the detection equipment 3, so that the action frequency of the linear motor can be obtained through conversion. In addition, the current signal is generated according to the following principle, and the stopper 2 in fig. 4 to 7 is shown in ① th structure, and it should be noted that the ② th structure is the same as the above principle, and the foamed nickel block in ② th structure can be regarded as the metal sheet layer 21, and the PDMS material film layer on the surface of the foamed nickel block can be regarded as the first cover layer 22.
A. The material atomic nuclei of the first cover layer 22 and the vibrator 4 have different binding capacities for external electrons, and when the two are in contact with each other, as shown in fig. 4, some electrons are lost from the vibrator 4, and the first cover layer 22 obtains equal amounts of electrons, but at this time, the contact surface of the two is in an electrostatic balance state, and no current is generated in the circuit.
B. In the process of separating the first cover layer 22 from the vibrator 4, as shown in fig. 5, positive and negative charges are separated, the vibrator 4 is positively charged, the first cover layer 22 is negatively charged, a potential difference is generated between the positive and negative charges, the unshielded negative charges of the first cover layer 22 enable the metal sheet layer 21 to generate electrostatic induction, and electrons flow into the ground from the metal sheet layer 21, so that current is generated.
C. As the vibrator 4 moves continuously, as shown in fig. 6, the first cover layer 22 and the metal sheet layer 21 reach an electrostatic balance state, and no current is generated in the circuit;
d. When the vibrator 4 approaches the first cover layer 22 again as shown in fig. 7, the electrostatic balance of the first cover layer 22 and the sheet metal layer 21 is disturbed, resulting in a decrease in the potential difference therebetween, causing electrons to flow from the ground into the sheet metal layer 21, thereby generating an opposite current;
the contact returns to fig. 4 of a, i.e. as the vibrator 4 moves periodically, an alternating electrical signal is continuously generated between the sheet metal layer 21 and the external circuit.
In a specific example, the length of the device body 1 is 100mm, the inner diameter is 25mm and the outer diameter is 30mm; the size of the stop block 2 is 30mm in diameter and 2mm in total thickness; the vibrator 4 is a nylon ball with the diameter of 25 mm; the detection device 3 adopts an oscilloscope, the reciprocating object 5 is a linear motor, the motion frequency is 5HZ, and the reciprocating stroke is more than 100mm. The acquired signals are shown in fig. 3.
Finally, it should be noted that: the foregoing embodiments are merely for illustrating the technical aspects of the present utility model and not for limiting the scope thereof, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes, modifications or equivalents may be made to the specific embodiments of the present utility model after reading the present utility model, and these changes, modifications or equivalents are within the scope of the utility model as defined in the appended claims.
Claims (10)
1. A reciprocating frequency detection device for detecting the frequency of a reciprocating object (5), which is characterized by comprising a device body (1), wherein the device body (1) is made of an insulating material, a channel (11) is arranged in the device body (1), a vibrating body (4) is arranged in the channel (11), and when the device body (1) moves along with the reciprocating object (5), the vibrating body (4) can reciprocate from one end to the other end along the channel (11); one end of the channel (11) is provided with a stop block (2), one side surface of the stop block (2) is used for blocking the corresponding end of the channel (11), and the binding capacity of atomic check electrons of the side surface adopted material is larger than that of the material of the vibrator (4); be provided with metal structure in dog (2), and metal structure passes through the wire and connects and set up detection equipment (3) outside device body (1), detection equipment (3) are used for detecting the current signal.
2. A reciprocating frequency detecting device according to claim 1, characterized in that the stopper (2) comprises a sheet metal layer (21) and a first cover layer (22) provided on one side of the sheet metal layer (21), the sheet metal layer (21) being connected to the detecting means (3) by a wire; the first cover layer (22) blocks the channel (11).
3. A reciprocation frequency detecting device according to claim 2, wherein a second cover layer (23) is provided on the other side of the sheet metal layer (21), the sheet metal layer (21) being made of metallic nickel; the first covering layer (22) and the second covering layer (23) are made of PDMS materials, and the thickness of the first covering layer and the second covering layer is 0.3-0.8 mm.
4. A reciprocation frequency detecting device according to claim 1, characterized in that the stopper (2) is made of PDMS material filled and wrapped with a foam nickel block connected to the detecting means (3) by a wire.
5. The reciprocating frequency detecting device as claimed in claim 4, wherein the PDMS material of the stopper (2) is wrapped on the surface of the foam nickel block with a thickness of 0.3-0.8 mm.
6. A reciprocating frequency detecting device according to claim 1, characterized in that the device body (1) has a cylindrical shape with one end sealed, and the inner cylinder hole forms the straight hole-like passage (11).
7. A device for detecting the frequency of reciprocation according to claim 6, wherein the stopper (2) has a cylindrical block shape and has a radius equal to the radius of the outer circumference of the device body (1).
8. A reciprocation frequency detecting device according to claim 7, wherein the stopper (2) is fixed to the open end of the device body (1) by means of an adhesive tape.
9. A device for detecting the frequency of reciprocation according to claim 1, wherein the vibrator (4) is in the form of a sphere made of nylon, copper, aluminum or rubber material.
10. A reciprocating frequency detection apparatus according to claim 1, characterized in that the detection device (3) comprises an ammeter or an oscilloscope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322367608.5U CN220893581U (en) | 2023-09-01 | 2023-09-01 | Reciprocating frequency detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322367608.5U CN220893581U (en) | 2023-09-01 | 2023-09-01 | Reciprocating frequency detection device |
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| Publication Number | Publication Date |
|---|---|
| CN220893581U true CN220893581U (en) | 2024-05-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322367608.5U Active CN220893581U (en) | 2023-09-01 | 2023-09-01 | Reciprocating frequency detection device |
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| Country | Link |
|---|---|
| CN (1) | CN220893581U (en) |
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- 2023-09-01 CN CN202322367608.5U patent/CN220893581U/en active Active
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