CN111181347B - Self-adaptive suspension power generation backpack, device and control method thereof - Google Patents
Self-adaptive suspension power generation backpack, device and control method thereof Download PDFInfo
- Publication number
- CN111181347B CN111181347B CN202010101997.5A CN202010101997A CN111181347B CN 111181347 B CN111181347 B CN 111181347B CN 202010101997 A CN202010101997 A CN 202010101997A CN 111181347 B CN111181347 B CN 111181347B
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- Prior art keywords
- load plate
- power generation
- coil
- sliding block
- permanent magnet
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- 238000010248 power generation Methods 0.000 title claims abstract description 34
- 239000000725 suspension Substances 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 11
- 230000001133 acceleration Effects 0.000 claims abstract description 36
- 230000007246 mechanism Effects 0.000 claims abstract description 22
- 230000033001 locomotion Effects 0.000 claims abstract description 21
- 230000005540 biological transmission Effects 0.000 claims abstract description 13
- 230000003044 adaptive effect Effects 0.000 claims description 14
- 238000005339 levitation Methods 0.000 claims description 9
- 230000000712 assembly Effects 0.000 claims description 4
- 238000000429 assembly Methods 0.000 claims description 4
- 239000013585 weight reducing agent Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 238000013016 damping Methods 0.000 description 6
- 230000000875 corresponding effect Effects 0.000 description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001603 reducing effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K35/00—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit
- H02K35/04—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit with moving coil systems and stationary magnets
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45C—PURSES; LUGGAGE; HAND CARRIED BAGS
- A45C13/00—Details; Accessories
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45F—TRAVELLING OR CAMP EQUIPMENT: SACKS OR PACKS CARRIED ON THE BODY
- A45F3/00—Travelling or camp articles; Sacks or packs carried on the body
- A45F3/04—Sacks or packs carried on the body by means of two straps passing over the two shoulders
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/32—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from a charging set comprising a non-electric prime mover rotating at constant speed
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N15/00—Holding or levitation devices using magnetic attraction or repulsion, not otherwise provided for
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Vibration Prevention Devices (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a self-adaptive suspension power generation knapsack, a device and a control method thereof, wherein the device comprises a support frame, a load plate, a coil assembly, a permanent magnet, an acceleration sensor and a rechargeable battery; the permanent magnet and the acceleration sensor are respectively arranged on the load plate; the support frame is provided with a guide rail, and the load plate is in sliding connection with the guide rail; the coil assembly comprises a sliding block, a coil wound on the sliding block and a driving mechanism connected to the supporting frame; the coil is connected with the charging end of the rechargeable battery through a wire; the sliding block is in transmission connection with the driving mechanism; the driving mechanism can control the sliding block to drive the coil to be close to or far away from the permanent magnet according to signals acquired by the acceleration sensor. The invention can adapt to the motion state of the load plate, and achieve better suspension weight reduction and power generation effects.
Description
Technical Field
The invention relates to a self-adaptive suspension power generation backpack, a device and a control method thereof, and belongs to the technical field of bags.
Background
The suspended power generation knapsack can reduce the burden and save the physical strength, can collect the energy generated by the vertical vibration of the knapsack when walking, can adapt to different weather conditions and different motion states, and perfectly solves the requirements of people on outdoor exercises comfort and practicality.
The patent database in China at 2019, 11 and 8 discloses a suspension power generation knapsack, which adopts a plurality of permanent magnet generators to convert mechanical energy in the vertical direction of the knapsack into electric energy to charge a power supply during walking and generate a load reducing effect. However, as the backpack is connected with the back plate by the permanent magnet power generation device, larger friction resistance is generated, and the damping force generated between the permanent magnet and the coil is constant when the backpack walks and runs, the damping force cannot be regulated along with different motion states, and the backpack cannot be always in a suspension state, so that the weight reduction and power generation effects are limited.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a self-adaptive suspension power generation backpack, a self-adaptive suspension power generation device and a control method thereof, which can be used for self-adapting to the motion state of a load plate and achieve better suspension weight reduction and power generation effects.
In order to achieve the above purpose, the invention is realized by adopting the following technical scheme:
In a first aspect, the invention provides a self-adaptive suspension power generation device, which comprises a support frame, a load plate, a coil assembly, a permanent magnet, an acceleration sensor and a rechargeable battery; the permanent magnet and the acceleration sensor are respectively arranged on the load plate; the support frame is provided with a guide rail, and the load plate is in sliding connection with the guide rail;
The coil assembly comprises a sliding block, a coil wound on the sliding block and a driving mechanism connected to the supporting frame; the coil is connected with the charging end of the rechargeable battery through a wire; the sliding block is in transmission connection with the driving mechanism; the driving mechanism can control the sliding block to drive the coil to be close to or far away from the permanent magnet according to signals acquired by the acceleration sensor.
In combination with the first aspect, further, a spring is sleeved on the guide rail, one end of the spring is connected with the load plate, and the other end of the spring is connected with the support frame.
With reference to the first aspect, further, the support frame includes four support plates, and the four support plates enclose a hollow frame structure.
With reference to the first aspect, further, the permanent magnets are provided with a plurality of permanent magnets which are divided into two groups and are distributed on two sides of the load plate in a straight line; two coil assemblies are arranged corresponding to the two groups of permanent magnets.
In combination with the first aspect, further, the two guide rails are arranged, the two guide rails are parallel to each other, at least two slip rings are arranged on the load plate corresponding to each guide rail, and the slip rings are sleeved on the guide rails.
In combination with the first aspect, further, the driving mechanism comprises a fixing seat, a driving motor fixed on the fixing seat and a screw rod in transmission connection with an output shaft of the driving motor, and the screw rod is in threaded connection with the sliding block.
In combination with the first aspect, further, the fixing seat is also connected with a sliding rod, and the sliding rod is in sliding connection with the sliding rod through a bearing.
In a second aspect, the invention provides an adaptive suspension power generation backpack, comprising a backpack body and any one of the adaptive suspension power generation devices, wherein the backpack body is arranged on a load plate.
In a third aspect, a control method of any one of the foregoing adaptive levitation power generation device, the method comprising the steps of:
collecting the acceleration of the load plate according to a preset time interval, and determining the movement frequency of the load plate according to the acceleration of the load plate;
Judging whether the load plate is in a resonance state according to the acceleration and the movement frequency of the load plate: if yes, returning to the previous step; otherwise, a control signal is sent to the driving mechanism to control the sliding block to drive the coil to be close to or far away from the permanent magnet, and the load plate is circularly regulated until the load plate is in a resonance state.
With reference to the third aspect, further, the time interval is not greater than 5 minutes.
Compared with the prior art, the invention has the beneficial effects that:
the coil assembly, the permanent magnet and the acceleration sensor are configured, the driving mechanism of the coil assembly can adjust the distance between the coil and the permanent magnet in the coil assembly according to signals acquired by the acceleration sensor, and the vibration damping of the load plate is adaptively adjusted according to the motion state, so that the load plate is in a resonance suspension state, and good suspension weight reduction and electric energy collection effects are realized; the springs are used as power transmission components, so that suspension weight reduction can be realized to a certain extent.
Drawings
FIG. 1 is a schematic diagram of an adaptive levitation power generation device according to an embodiment of the present invention;
FIG. 2 is a schematic view of the structure of FIG. 1 in another direction;
FIG. 3 is a schematic view of the load plate of FIG. 1;
FIG. 4 is a schematic view of the coil assembly of FIG. 1;
FIG. 5 is a schematic block diagram of a circuit of an adaptive levitation power generation device according to an embodiment of the present invention;
Fig. 6 is a flowchart of a control method of an adaptive levitation power generation device according to an embodiment of the present invention.
In the figure: 1. a support frame; 2. a guide rail; 3. a load plate; 4. a coil assembly; 41. a fixing seat; 42. a slide block; 43. a coil; 44. a screw rod; 45. a slide bar; 5. a rechargeable battery; 6. a spring; 7. an acceleration sensor; 8. a permanent magnet; 9. a slip ring; 10. a transmission line.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present invention, and are not intended to limit the scope of the present invention.
As shown in fig. 1 to 4, an embodiment of the present invention provides an adaptive levitation power generation device, which includes a support frame 1, a load plate 3, a coil assembly 4, a permanent magnet 8, an acceleration sensor 7, and a rechargeable battery 5.
The support frame 1 is provided with a guide rail 2, and the load plate 3 is in sliding connection with the support frame 1 through the guide rail 2. The coil assembly 4 includes a slider 42, a coil 43, and a driving mechanism. The coil 43 is wound on the slider 42 and is close to the permanent magnet 8, thus forming a permanent magnet power generation mechanism. The driving mechanism is fixed on the support frame 1 and is used for driving the sliding block 42 to be far away from or close to the permanent magnet 8 so as to change the distance between the coil 43 and the permanent magnet 8. The permanent magnet 8 and the acceleration sensor 7 are fixed to the load plate 3, respectively, and move in synchronization with the load plate 3. When the coil 43 and the permanent magnet 8 move relatively, the electric energy generated by the coil 43 cutting the magnetic induction wire is transmitted to the rechargeable battery 5 through the transmission line 10 to charge the rechargeable battery 5.
The acceleration sensor 7 adopts a triaxial acceleration sensor 7, and the driving mechanism can control the sliding block 42 to drive the coil 43 to approach or depart from the permanent magnet 8 according to acceleration signals acquired by the acceleration sensor 7 so as to adjust vibration damping of the load plate 3, so that the load plate 3 is in a resonance suspension state, and better suspension weight reduction and electric energy collection effects are realized.
In order to reduce the weight of the suspension power generation device, the support frame 1 adopts a hollow frame structure and is surrounded by an upper support plate, a lower support plate, a left support plate and a right support plate.
In order to make the load plate 3 run more stably, in the embodiment of the invention, two guide rails 2 are configured for the load plate 3, and the two guide rails 2 are parallel to each other and connected between the upper support plate and the lower support plate. The load plate 3 is provided with a pair of slip rings 9 corresponding to each guide rail 2, the slip rings 9 are sleeved on the guide rails 2, and the slip rings can be fixed on the load plate 3 through screws. The length of the slip ring 9 should not be too long to reduce the contact friction with the guide rail 2, and the contact surface of the slip ring 9 and the guide rail 2 should be smooth enough to be smeared with lubricating oil if necessary to reduce the friction resistance between the two.
The permanent magnets 8 may be small powerful magnets, and in order to ensure that a strong magnetic field is distributed around the coil 43, in the embodiment of the present invention, two groups of permanent magnets 8 are provided, each group is configured with a plurality of permanent magnets 8, and the permanent magnets are linearly distributed on the load plate 3 from top to bottom. Corresponding to the two groups of permanent magnets 8, the coil assemblies 4 are also provided with two, and the coils 43 of the two coil assemblies 4 are connected with the charging end of the rechargeable battery 5 through the transmission line 10 to provide electric energy for the rechargeable battery 5.
The spring 6 is also arranged below the load plate 3, the spring 6 is sleeved on the guide rail 2, one end of the spring 6 is connected with the load plate 3, the other end of the spring 6 is connected with the lower supporting plate of the supporting frame 1, and the spring 6 can help the load plate 3 to be in a resonance suspension state. The spring 6 is an important power transmission component, and the rigidity system can be calculated according to the following formula:
wherein: k is the stiffness coefficient of the spring 6; m is the total weight of the load plate 3 and all components connected to the load plate 3 (including the load), in this example m takes 5kg; omega is the movement angular frequency, and the movement frequency f 0＝2Hz,ω＝2πf0 of the person during walking is selected in the embodiment; when the vibration damping force is 0, the ideal state is obtained, and k is the optimal value.
The driving mechanism in the embodiment of the invention comprises a fixed seat 41, a driving motor fixed on the fixed seat 41 and a screw rod 44 in transmission connection with an output shaft of the driving motor, wherein the screw rod 44 is in threaded connection with a sliding block 42. The fixed seat 41 is also connected with a sliding rod 45, and the sliding rod 45 is used for guiding the movement of the sliding block 42. The slider 42 may be slidably coupled to the slide bar 45 by bearings that reduce frictional resistance between the slider 42 and the slide bar 45. Since the torque required for the horizontal movement of the coil 43 is small, a small stepping motor can be used as the driving motor. The screw rod 44 is used for adjusting and controlling, the control precision is higher, the screw rod 44 can work stably after the power of the driving motor is off, the driving motor is prevented from being in a working state all the time, and electric energy is saved.
Considering that there are various possibilities of vertical acceleration, horizontal acceleration, rotational acceleration, etc. when the load board 3 moves, in the embodiment of the present invention, the acceleration sensor 7 is selectively installed at the center position of the load board 3, so as to reduce the influence of horizontal movement and rotational movement on the vertical acceleration data acquisition as much as possible.
The rechargeable battery 5 may be a lithium battery, and is provided with an electric power output port, such as a USB interface, to charge an external device with the stored electric power. The rechargeable battery 5 may also supply power to each power unit in the levitation power generation device.
Fig. 5 is a schematic circuit block diagram of an adaptive levitation power generation device according to an embodiment of the present invention, which includes a microcontroller, and an acceleration sensor 7 may be connected to the microcontroller through a wireless transmission module, and the wireless transmission module may be a bluetooth module. When the load board 3 works, the microcontroller acquires signals sensed by the acceleration sensor 7 through the serial port, judges whether the coil 43 is required to be far away from or close to the permanent magnet 8 according to the signals, and outputs control instructions to the driving motor to execute corresponding actions so as to adjust the distance between the coil 43 and the permanent magnet 8, so that the load board 3 is in a resonance suspension state. During which the electric energy generated by the relative movement of the coil 43 and the permanent magnet 8 is fed back to the rechargeable battery 5. When the distance or the movement frequency between the coil 43 and the permanent magnet 8 changes, the generated power will change, and the charging of the rechargeable battery 5 will be started only when the generated power is higher than the set upper limit value; when the generated power is lower than the set lower limit value, the rechargeable battery 5 stops charging. Therefore, the charging power of the lithium battery can be ensured, and the service life of the lithium battery can be prolonged.
It should be noted that, the microcontroller does not continuously collect the signals collected by the acceleration sensor 7 in real time, but performs acceleration signal collection once according to a set time interval, and the time interval is not more than 5 minutes, so that the suspension mechanism can be timely adjusted when the motion state of the load plate 3 is changed, and the electric energy can be reasonably saved.
The self-adaptive suspension device provided by the embodiment of the invention can be applied to the field of bags, is particularly suitable for backpacks, is used for connecting a backpack body to the load board 3, and can adaptively adjust the damping force of the coil 43 according to the motion state of a human body, so that the backpack body and the load board 3 are in a suspension weight-reducing state, and the load of the human body is reduced. But not limited to this, the adaptive suspension device provided by the embodiment of the invention can also be applied to the field of engineering machinery, such as the field of cargo transportation, and can reduce the mechanical load of a cargo handling mechanism to a certain extent.
The self-adaptive suspension power generation device provided by the embodiment of the invention can be selected from the following control methods:
collecting the vertical acceleration of the load plate 3 according to a preset time interval, and calculating the movement frequency of the load plate 3 according to the acceleration of the load plate 3;
judging whether the load plate 3 is in a resonance state according to the vertical acceleration and the motion frequency of the load plate 3: if yes, returning to the previous step; otherwise, a control signal is sent to the driving mechanism to control the slider 42 to drive the coil 43 to approach or depart from the permanent magnet 8, and the load plate 3 is circularly adjusted until being in a resonance state.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present invention, and such modifications and variations should also be regarded as being within the scope of the invention.
Claims (8)
1. The self-adaptive suspension power generation device is characterized by comprising a support frame (1), a load plate (3), a coil assembly (4), a permanent magnet (8), an acceleration sensor (7) and a rechargeable battery (5); the permanent magnet (8) and the acceleration sensor (7) are respectively arranged on the load plate (3); the support frame (1) is provided with a guide rail (2), and the load plate (3) is in sliding connection with the guide rail (2);
The coil assembly (4) comprises a sliding block (42), a coil (43) wound on the sliding block (42) and a driving mechanism connected to the supporting frame (1); the coil (43) is connected with the charging end of the rechargeable battery (5) through a wire; the sliding block (42) is in transmission connection with the driving mechanism; the driving mechanism can control the sliding block (42) to drive the coil (43) to be close to or far away from the permanent magnet (8) according to signals acquired by the acceleration sensor (7);
The driving mechanism comprises a fixed seat (41), a driving motor fixed on the fixed seat (41) and a screw rod (44) in transmission connection with an output shaft of the driving motor, and the screw rod (44) is in threaded connection with the sliding block (42); the fixing seat (41) is also connected with a sliding rod (45), and the sliding block (42) is in sliding connection with the sliding rod (45) through a bearing.
2. The self-adaptive suspension power generation device according to claim 1, wherein a spring (6) is sleeved on the guide rail (2), one end of the spring (6) is connected with the load plate (3), and the other end of the spring is connected with the support frame (1).
3. The adaptive suspension power generation device according to claim 1, wherein the support frame (1) comprises four support plates, which enclose a hollow frame structure.
4. The self-adaptive suspension power generation device according to claim 1, wherein the permanent magnets (8) are arranged in a plurality of groups and are distributed on two sides of the load plate (3) in a straight line shape; two coil assemblies (4) are arranged corresponding to the two groups of permanent magnets (8).
5. The self-adaptive suspension power generation device according to claim 1, wherein two guide rails (2) are arranged, the two guide rails (2) are parallel to each other, the load plate (3) is provided with at least two slip rings (9) corresponding to each guide rail (2), and the slip rings (9) are sleeved on the guide rails (2).
6. An adaptive suspension power generation backpack, characterized by comprising a backpack body and the adaptive suspension power generation device of any one of claims 1 to 5, wherein the backpack body is arranged on a load plate (3).
7. A control method of the adaptive levitation power generation apparatus of any of claims 1 to 5, characterized by comprising the steps of:
collecting acceleration of the load plate (3) according to a preset time interval, and determining movement frequency of the load plate (3) according to the acceleration of the load plate;
Judging whether the load plate (3) is in a resonance state according to the acceleration and the movement frequency of the load plate (3): if yes, returning to the previous step; otherwise, a control signal is sent to the driving mechanism to control the sliding block (42) to drive the coil (43) to be close to or far away from the permanent magnet (8), and the load plate (3) is circularly adjusted until the load plate is in a resonance state.
8. The method of controlling an adaptive levitation power generation device of claim 7, wherein the time interval is not more than 5 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010101997.5A CN111181347B (en) | 2020-02-19 | 2020-02-19 | Self-adaptive suspension power generation backpack, device and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010101997.5A CN111181347B (en) | 2020-02-19 | 2020-02-19 | Self-adaptive suspension power generation backpack, device and control method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111181347A CN111181347A (en) | 2020-05-19 |
| CN111181347B true CN111181347B (en) | 2024-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010101997.5A Active CN111181347B (en) | 2020-02-19 | 2020-02-19 | Self-adaptive suspension power generation backpack, device and control method thereof |
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| Country | Link |
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| CN (1) | CN111181347B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114747861B (en) * | 2022-04-06 | 2023-11-03 | 常州纺织服装职业技术学院 | Suspension knapsack based on straight line shakes electricity generation |
| CN117738860A (en) * | 2024-01-11 | 2024-03-22 | 河海大学 | Backpack type vibration energy collecting device and collecting method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109083817A (en) * | 2018-08-10 | 2018-12-25 | 南京邮电大学 | A kind of wearable power generator and its control method |
| CN208634824U (en) * | 2018-07-24 | 2019-03-22 | 东莞市欧微照明科技有限公司 | A kind of outer emergency light of magnetic suspension kinetic energy self-powered household portable |
| CN212063803U (en) * | 2020-02-19 | 2020-12-01 | 南京邮电大学 | Self-adaptive suspension power generation backpack and device |
-
2020
- 2020-02-19 CN CN202010101997.5A patent/CN111181347B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208634824U (en) * | 2018-07-24 | 2019-03-22 | 东莞市欧微照明科技有限公司 | A kind of outer emergency light of magnetic suspension kinetic energy self-powered household portable |
| CN109083817A (en) * | 2018-08-10 | 2018-12-25 | 南京邮电大学 | A kind of wearable power generator and its control method |
| CN212063803U (en) * | 2020-02-19 | 2020-12-01 | 南京邮电大学 | Self-adaptive suspension power generation backpack and device |
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| CN111181347A (en) | 2020-05-19 |
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