CN115189543A - Wireless motion sensor with self-generating mechanism - Google Patents
Wireless motion sensor with self-generating mechanism Download PDFInfo
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- CN115189543A CN115189543A CN202210891155.3A CN202210891155A CN115189543A CN 115189543 A CN115189543 A CN 115189543A CN 202210891155 A CN202210891155 A CN 202210891155A CN 115189543 A CN115189543 A CN 115189543A
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- self
- motion sensor
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- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
- G01P15/18—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration in two or more dimensions
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- 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
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
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- 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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00302—Overcharge protection
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention provides a wireless motion sensor with a self-generating mechanism, which comprises a self-generating device consisting of an inner ball and an outer ball which are concentric and hollow, wherein one or more pairs of magnetic poles which are vertical to each other are arranged in the inner ball, one or more windings which are vertical to each other are arranged inside or outside the outer ball in a surrounding mode, the windings are electrically connected with a power management and module control chip and are used for rectifying current generated by induced electromotive force, a multidimensional motion sensor is arranged in the outer ball and is electrically connected with the power management and module control chip and is used for converting acceleration generated by motion into voltage or current signals, and the power management and module control chip is used for amplifying, filtering and sampling the voltage or current signals and then is electrically connected with an external device through a communication module. The specific self-generating function and the wireless charging function of the scheme can convert kinetic energy generated by movement into electric energy for storage, the electric energy is not required to be additionally consumed to support the operation of the sensor, and the system is not limited by the electric quantity of the battery.
Description
Technical Field
The invention relates to the technical field of integrated circuits and sensors, in particular to a wireless motion sensor with a self-generating mechanism.
Background
Intelligence is penetrating every corner of human society, with no exception to sports. In order to analyze the force, direction, posture and exercise amount in the exercise process so as to more effectively exert force and control the force exerting angle, posture and exercise amount, the low-power-consumption motion sensor is essential to the scientization and intellectualization of sports. In order to facilitate wearing of the existing motion sensor, a built-in battery is used for charging or a battery is replaced for maintaining electric quantity, so that firstly, energy waste is caused, and secondly, the electric quantity is easy to be insufficient, but a user does not know the electric quantity, so that accidents that the motion sensor cannot operate are caused.
Disclosure of Invention
The invention aims to provide a motion sensor capable of generating electricity automatically, which can ensure the normal use of the motion sensor and does not need external charging.
In order to achieve the purpose, the invention is realized by the following technical scheme:
a wireless motion sensor with a self-generating mechanism comprises a self-generating device, a power management and module control chip, a multidimensional motion sensor, a battery and a communication module, wherein the self-generating device comprises a concentric and hollow inner ball (2) and an outer ball (3), one or more pairs of mutually perpendicular magnetic poles (1) are arranged in the inner ball, one or more mutually perpendicular windings (4) are wound inside or outside the outer ball (3) in a surrounding manner, the windings (4) are electrically connected with the power management and module control chip and used for rectifying current generated by induced electromotive force into the battery for charging, the multidimensional motion sensor is arranged in the outer ball and electrically connected with the power management and module control chip and used for converting acceleration generated by motion into voltage or current signals, and the power management and module control chip amplifies, filters and samples the voltage or current signals and then electrically connects with an external device through the communication module and is used for next step of operation and storage.
Furthermore, the circuit connection structure of the power management and module control chip comprises a micro-voltage rectifying circuit and a charging management protection circuit, wherein the rectifying circuit is connected with the winding, and the charging management and protection circuit charges the battery.
Further, the micro-voltage rectifying circuit includes: one or more windings are respectively connected with a rectifying circuit in parallel, and after the parallel circuits are connected in series, two ends of the parallel circuits are respectively connected to the positive pole and the negative pole of the charging management protection circuit.
Further, the rectification circuit is: the two ends A1 and A2 of the winding are respectively connected with four transistors, wherein the A1 is connected with the grids of the transistors P2 and N2, the source electrode of the P1 and the drain electrode of the N1, the A2 is connected with the grids of the transistors P1 and N1, the drain electrode of the P2 and the source electrode of the N2, the drain electrode of the P1 is connected with the source electrode of the P2 and then connected with the charging management protection circuit, and the source electrode of the N1 is connected with the drain electrode of the N2 and then connected with the voltage-stabilizing triode in series and then connected with the charging management protection circuit.
Furthermore, the charging management protection circuit comprises two triodes T1 and T2, diodes D1 and D2 and protection resistors R1 and R2, an emitting electrode of the T1 is connected with one end of the micro-voltage rectification circuit, a base electrode of the T1 is connected with a collector electrode of the T2 and then connected with the other end of the micro-voltage rectification circuit through the protection resistor R1, a power supply to be charged is connected after a collector electrode of the T1 is connected with the emitting electrode of the T2, and the base electrode of the T2 is connected with the other end of the power supply to be charged after being connected with a pair of voltage stabilizing diodes D1, D2 and R2 which are reversely connected in series.
Furthermore, the connection ends of the protection resistors R1 and R2 and the power supply to be charged are grounded.
Furthermore, the power management and module control special chip has data transmission, encryption, error correction coding and error retransmission strategies with an external device through the communication module.
Furthermore, the self-generating device is a pluggable structure.
The invention has the advantages that: the wireless motion sensor with the self-generating mechanism and the micro-voltage rectifying circuit can be worn on the wrist, the front part of the center of a sports shoe or internally arranged in the sports shoe, the multidimensional motion sensor can collect multidimensional motion information, a special chip carries out required processing on the signals, data is stored in a memory internally arranged in the chip, the data is transmitted out by utilizing a communication module, transmission strategies such as encryption, error correction coding and error retransmission are realized, and convenience is brought to the collection of the motion data.
In addition, the sensor can convert acceleration and the like into voltage or current signals, the voltage or current signals are connected to the power management and module control special chip, the specific self-generating function and the wireless charging function can convert kinetic energy generated by movement into electric energy for storage, the extra excessive consumption of the electric energy is not needed to support the operation of the sensor, and the system is not limited by the battery capacity.
The micro-voltage rectifying circuit can rectify micro-voltage alternating voltage to realize miniaturization of a winding, the multi-stage micro-voltage rectifying circuit is connected in series to obtain any high voltage, the battery is effectively charged under the control of the power management circuit, and the charging management and protection circuit can prevent the self-generating device or the external charging device from overcharging the battery. The self-generating device can be plugged and unplugged, and can be plugged when needed, so that automatic power generation is realized; when not needed, the battery can be detached and charged wirelessly or by external wired charging.
Drawings
FIG. 1 is a schematic view of the structure of the present invention;
FIG. 2 is a schematic diagram of an inner ball magnetic pole structure;
FIG. 3 is a schematic diagram of an outer ball winding structure;
FIG. 4 is a schematic diagram of the winding, the micro-voltage rectifier circuit and the charge management protection circuit;
FIG. 5 is an enlarged view of a micro-voltage rectifier circuit;
wherein, 1-magnetic pole, 2-inner sphere, 3-outer sphere and 4-winding.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a wireless motion sensor with a self-generating mechanism as shown in figure 1, which comprises a self-generating device, a power management and module control chip, a multi-dimensional motion sensor, a battery and a communication module, wherein the self-generating device comprises a concentric and hollow inner ball (2) and an outer ball (3). Referring to fig. 2, the inner ball (2) is provided with one or more pairs of magnetic poles (1) perpendicular to each other, and when the device is installed at a moving site, the inner ball (2) rolls or jumps inside the outer ball (3), thereby forming a moving magnetic field. Referring to fig. 3, the outer sphere (3) is surrounded internally or externally by one or more mutually perpendicular windings (4), and the moving magnetic field generates an induced electromotive force in each winding.
The winding (4) is electrically connected with the power management and module control chip and used for rectifying current generated by induced electromotive force into a battery for charging, the multidimensional motion sensor is arranged in the outer ball and electrically connected with the power management and module control chip and used for converting acceleration generated by motion into a voltage or current signal, and the power management and module control chip is electrically connected with an external device through the communication module after amplifying, filtering and sampling the voltage or current signal and used for carrying out next-step operation and storage.
Fig. 4 shows a circuit connection structure of a power management and module control chip, which includes a micro-voltage rectification circuit, a charge management protection circuit, the rectification circuit is connected with a winding, and the charge management and protection circuit charges a battery.
The micro-voltage rectifying circuit includes: the n (n is a natural number) windings are respectively connected in parallel with a rectifying circuit, such as C1, C2 and Cn in figure 4, the parallel circuits are connected in series, and two ends of the parallel circuits are respectively connected to the positive pole and the negative pole of the charging management circuit. The charging management protection circuit comprises two triodes T1 and T2, diodes D1 and D2 and protection resistors R1 and R2, an emitting electrode of the T1 is connected with one end of the micro-voltage rectification circuit, a base electrode of the T1 is connected with a collector electrode of the T2 and then connected with the other end of the micro-voltage rectification circuit through the protection resistor R1, the collector electrode of the T1 is connected with the emitting electrode of the T2 and then connected with a power supply to be charged, and the base electrode of the T2 is connected with a pair of voltage stabilizing diodes D1, D2 and R2 which are reversely connected in series and then connected with the other end of the power supply to be charged.
Initially, the battery is empty or low in power, the voltage regulator tube D1 and the diode D2 cannot be turned on, the transistor T2 is turned off, the transistor T1 is turned on, and if the rectified voltage after series connection is sufficiently high, the circuit shown in fig. 4 starts to charge the battery. When the battery is fully charged or the electric quantity of the battery is high enough, the voltage stabilizing tube D1 and the diode D2 are conducted, the transistor T2 is turned on, on one hand, the overcharged current is discharged, on the other hand, the voltage of the base electrode of the transistor T1 is increased under the action of negative feedback, so that the T1 tends to be turned off until the T1 is turned off, the battery is prevented from being overcharged, and the battery is protected.
As shown in fig. 5, the rectifier circuit is specifically connected in the following manner: the two ends A1 and A2 of the winding are respectively connected with four transistors, wherein the A1 is connected with the grids of the transistors P2 and N2, the source electrode of the P1 and the drain electrode of the N1, the A2 is connected with the grids of the transistors P1 and N1, the drain electrode of the P2 and the source electrode of the N2, the drain electrode of the P1 is connected with the source electrode of the P2 and then connected with the charging management protection circuit, and the source electrode of the N1 is connected with the drain electrode of the N2 and then connected with the voltage-stabilizing triode in series and then connected with the charging management protection circuit. The connecting ends of the protective resistors R1 and R2 and the power supply to be charged are grounded. When the micro voltage of the A1 is higher than the A2 end, the transistor P1 and the transistor N2 are conducted or conducted with a sub-threshold value, and the current from the endpoint Z to the node X to the endpoint F is generated; when the micro voltage of A2 is higher than the terminal A1, the transistor P2 and the transistor N1 are turned on or turned on with a sub-threshold, and a current from the terminal Z to the node X to the terminal F is generated. Transistor N3 prevents current from flowing from terminal F. After being connected in series, the multistage micro-voltage rectifying circuit can obtain any high voltage, and the battery is charged under the control of the special chip.
The chip special for power management and module control can filter, amplify, sample and calculate the electric signal generated by the motion sensor to obtain the needed motion data, store the data in the memory built in the chip, and transmit the data by using the communication module, for example but not limited to, realizing transmission strategies such as encryption, error correction coding, error retransmission and the like.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a wireless motion sensor with from power generation mechanism, includes from power generation facility, power management and module control chip, multidimensional motion sensor, battery and communication module, its characterized in that: the self-generating device comprises a concentric and hollow inner ball (2) and an outer ball (3), wherein one or more pairs of magnetic poles (1) which are perpendicular to each other are arranged in the inner ball, one or more windings (4) which are perpendicular to each other are arranged inside or outside the outer ball (3) in a surrounding mode, the windings (4) are electrically connected with a power management and module control chip and used for rectifying current generated by induced electromotive force into a battery for charging, the multidimensional motion sensor is arranged in the outer ball and electrically connected with the power management and module control chip and used for converting acceleration generated by motion into voltage or current signals, and the power management and module control chip is electrically connected with an external device through a communication module after amplifying, filtering and sampling the voltage or current signals and used for carrying out next operation and storage.
2. The infinite motion sensor with self-generating mechanism according to claim 1, wherein the circuit connection structure of the power management and module control chip comprises a micro-voltage rectification circuit and a charge management protection circuit, the rectification circuit is connected with the winding, and the charge management and protection circuit charges a battery.
3. The infinite motion sensor with self-generating mechanism according to claim 2, wherein the micro-voltage rectifying circuit includes: one or more windings are respectively connected with a rectifying circuit in parallel, and after the parallel circuits are connected together in series, two ends of the parallel circuits are respectively connected to the positive pole and the negative pole of the charging management protection circuit.
4. The infinite motion sensor with self-generating mechanism according to claim 2, wherein the rectifying circuit is: two ends A1 and A2 of the winding are respectively connected with four transistors, wherein A1 is connected with gates of transistors P2 and N2, a source electrode of P1 and a drain electrode of N1, A2 is connected with gates of transistors P1 and N1, a drain electrode of P2 and a source electrode of N2, the drain electrode of P1 is connected with the source electrode of P2 and then connected to the charging management protection circuit, and the source electrode of N1 is connected with the drain electrode of N2 and then connected to the charging management protection circuit in series with a voltage-stabilizing triode.
5. The infinite motion sensor with the self-generating mechanism according to claim 2, wherein the charge management protection circuit includes two triodes T1 and T2, diodes D1 and D2 and protection resistors R1 and R2, an emitter of the T1 is connected to one end of the micro-voltage rectification circuit, a base of the T1 is connected to a collector of the T2 and then connected to the other end of the micro-voltage rectification circuit through the protection resistor R1, the collector of the T1 is connected to the emitter of the T2 and then connected to the power source to be charged, and the base of the T2 is connected to the other end of the power source to be charged after being connected to a pair of reverse voltage-stabilizing diodes D1, D2 and R2 in series.
6. The infinite motion sensor with self-generating mechanism according to claim 5, wherein the connection ends of the protection resistors R1 and R2 and the power source to be charged are grounded.
7. The infinite motion sensor with self-generating mechanism according to claim 1, wherein the power management and module control dedicated chip has data transmission, encryption, error correction coding and error retransmission strategies with an external device through the communication module.
8. The infinite motion sensor with self-generating mechanism according to claim 1, wherein the self-generating device is a pluggable structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210891155.3A CN115189543B (en) | 2022-07-27 | 2022-07-27 | Wireless motion sensor with self-generating mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210891155.3A CN115189543B (en) | 2022-07-27 | 2022-07-27 | Wireless motion sensor with self-generating mechanism |
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| CN115189543A true CN115189543A (en) | 2022-10-14 |
| CN115189543B CN115189543B (en) | 2023-07-18 |
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| CN115189543B (en) | 2023-07-18 |
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