CN115189543B - Wireless motion sensor with self-generating mechanism - Google Patents
Wireless motion sensor with self-generating mechanism Download PDFInfo
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- CN115189543B CN115189543B CN202210891155.3A CN202210891155A CN115189543B CN 115189543 B CN115189543 B CN 115189543B CN 202210891155 A CN202210891155 A CN 202210891155A CN 115189543 B CN115189543 B CN 115189543B
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- voltage
- self
- motion sensor
- micro
- module control
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Classifications
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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
Abstract
The invention provides a wireless motion sensor with a self-generating mechanism, which comprises a self-generating device consisting of a concentric hollow inner ball and an outer ball, wherein one or more pairs of mutually perpendicular magnetic poles are arranged in the inner ball, one or more mutually perpendicular windings are arranged inside or outside the outer ball in a surrounding manner, the windings are electrically connected with a power management and module control chip and used for rectifying current generated by induced electromotive force, a 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 is electrically connected with an external device through a communication module. The special self-generating function and the wireless charging function of the scheme can convert kinetic energy generated by movement into electric energy for storage, the operation of the electric energy supporting sensor is not required to be excessively consumed, and the system is not limited by the electric quantity of a 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 all corners of the human society, and sports are no exception. In order to analyze the force, direction, posture and movement amount during the movement process so as to more effectively exert force, control the force angle, posture and movement amount, a low-power-consumption movement sensor is essential for the scientization and the intellectualization of sports. In order to facilitate wearing, the conventional motion sensor is charged by using a built-in battery or is replaced by using a battery to maintain the electric quantity, so that energy waste is caused, and accidents that the electric quantity is insufficient and a user is unaware and cannot operate are caused easily.
Disclosure of Invention
The invention aims to provide a motion sensor capable of generating power, which not only can ensure the normal use of the motion sensor, but also does not need external charging.
The invention aims to achieve the aim, and the aim is achieved by the following technical scheme:
the utility model provides a wireless motion sensor with from generating mechanism, including from the power generation facility, power management and module control chip, multidimensional motion sensor, battery and communication module, from the power generation facility including concentric and hollow interior ball (2) and ectosphere (3), be provided with one or more pairs of mutually perpendicular magnetic poles (1) in the interior ball, the inside or outside of ectosphere (3) encircles one or more mutually perpendicular winding (4), winding (4) all are connected with power management and module control chip electricity, be used for the electric current rectification that the induced electromotive force produced for battery charging, multidimensional motion sensor sets up in the ectosphere, with power management and module control chip electricity connection, be used for converting the acceleration that the motion produced into voltage or current signal, power management and module control chip are with voltage or current signal amplification, electric connection with external device through communication module after filtering and sampling, be used for carrying out next step operation and storage.
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 micro-voltage rectifying circuit is connected with the winding, and the charging management and protection circuit charges the battery.
The micro-voltage rectifying circuit is as follows: the two ends A1 and A2 of the winding are respectively connected into four transistors P1, P2, N1 and N2, wherein A1 is connected into the grid electrodes of the transistors P2 and N2, the source electrode of P1 and the drain electrode of N1, A2 is connected into the grid electrodes of the transistors P1 and N1, the drain electrode of P2 and the source electrode of N2, the drain electrode of P1 and the source electrode of P2 are connected to a charge management protection circuit after being connected, and the source electrode of N1 and the drain electrode of N2 are connected in series with a voltage stabilizing triode and then are connected to the charge management protection circuit.
Further, the micro-voltage rectifying circuit includes: one or more windings are respectively connected with a micro-voltage rectifying circuit in parallel, and after the circuits connected in parallel are connected in series, two ends of the circuits are respectively connected with the positive electrode and the negative electrode of the charge management protection circuit.
Further, the charging management protection circuit comprises two triodes T1 and T2, diodes D1 and D2 and protection resistors R1 and R2, wherein an emitter 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 of the T2 and then is connected with the other end of the micro-voltage rectification circuit through the protection resistor R1, the collector of the T1 is connected with the emitter of the T2 and then is connected with a power supply to be charged, and a base electrode of the T2 is connected with a pair of voltage stabilizing diodes D1, D2 and R2 in series and then is connected with the other end of the power supply to be charged.
Further, the protection resistors R1 and R2 are grounded to the connection terminal of the power supply to be charged.
Furthermore, the special chip for power management and module control has data transmission with an external device through the communication module, so that encryption, error correction coding and error retransmission strategies are realized.
Further, the self-generating device is of 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 central front part of the sports shoes or built in the sports shoes, the multidimensional motion sensor can collect multidimensional motion information, a special chip carries out required processing on the signals, data are stored in a memory built in the chip, the data are transmitted outwards by utilizing a communication module, transmission strategies such as encryption, error correction coding, error retransmission and the like are realized, and convenience is provided for acquisition of motion data.
In addition, the sensor can convert, for example but not limited to acceleration, etc. into voltage or current signals, the voltage or current signals are connected to the special chip for power management and module control, the special self-generating function and the wireless charging function can convert kinetic energy generated by movement into electric energy for storage, the operation of the sensor is supported without extra excessive consumption of electric energy, and the system is not limited by the electric quantity of a battery.
The micro-voltage rectifying circuit disclosed by the scheme can rectify micro-voltage alternating-current voltage, so that the miniaturization of windings is realized, 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 an 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, it can be removed, either by wireless charging or by external wired charging.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of an inner ball pole structure;
FIG. 3 is a schematic diagram of an outer ball winding structure;
FIG. 4 is a schematic diagram of the winding, micro-voltage rectifying circuit and charge management protection circuit;
FIG. 5 is an enlarged view of the micro-voltage rectifying circuit;
wherein, 1-magnetic pole, 2-inner ball, 3-outer ball, 4-winding.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides a wireless motion sensor with a self-generating mechanism, which is shown in fig. 1, and 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). Referring to fig. 2, one or more pairs of mutually perpendicular magnetic poles (1) are provided in the inner ball (2), and when the device is installed at a moving part, the inner ball (2) rolls or jumps inside the outer ball (3), thereby forming a moving magnetic field. Referring to fig. 3, the outer ball (3) is surrounded internally or externally by one or more mutually perpendicular windings (4), and the moving magnetic field generates induced electromotive forces in the respective windings.
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 battery charge, 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 is electrically connected with an external device through the communication module and used for carrying out next operation and storage.
Fig. 4 shows a circuit connection structure of a power management and module control chip, which comprises a micro-voltage rectifying circuit and a charging management and protection circuit, wherein the micro-voltage rectifying circuit is connected with a winding, and the charging management and protection circuit charges a battery.
The micro-voltage rectification circuit includes: the n windings (n is a natural number) are respectively connected in parallel with a micro-voltage rectifying circuit, such as C1, C2 and Cn in figure 4, and the parallel circuits are connected in series and the two ends 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, wherein an emitter 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 of the T2 and then is connected with the other end of the micro-voltage rectification circuit through the protection resistor R1, the collector of the T1 is connected with the emitter of the T2 and then is connected with a power supply to be charged, and a base electrode of the T2 is connected with a pair of voltage stabilizing diodes D1, D2 and R2 which are connected in reverse in series and then is connected with the other end of the power supply to be charged.
Initially, the battery charge is empty or low, the regulator D1 and 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 high enough, 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 raised through the negative feedback effect, the transistor T1 tends to be turned off until the transistor T1 is turned off, and the battery is prevented from being overcharged, so that the battery is protected.
As shown in fig. 5, the micro-voltage rectifying circuit is specifically connected in the following manner: the two ends A1 and A2 of the winding are respectively connected into four transistors, wherein A1 is connected into the grid electrodes of the transistors P2 and N2, the source electrode of P1 and the drain electrode of N1, A2 is connected into the grid electrodes of the transistors P1 and N1, the drain electrode of P2 and the source electrode of N2, the drain electrode of P1 and the source electrode of P2 are connected to a charge management protection circuit after being connected, and the source electrode of N1 and the drain electrode of N2 are connected in series with a voltage stabilizing triode and then are connected to the charge management protection circuit. The connection terminals of the protection resistors R1 and R2 and the power supply to be charged are grounded. When the micro voltage of A1 is higher than the end A2, the transistor P1 and the transistor N2 are conducted or the sub-threshold is conducted, and a current from the end Z to the node X to the end F is generated; when the micro-voltage of A2 is higher than the A1 terminal, the transistor P2 and the transistor N1 are turned on or the sub-threshold is turned on, and the current from the terminal Z to the node X to the terminal F is generated. Transistor N3 prevents current from flowing from terminal F. The multistage micro-voltage rectifying circuit can obtain any high voltage after being connected in series, and the battery is charged under the control of the special chip.
The special chip for power management and module control can filter, amplify, sample and operate the electric signal generated by the motion sensor to obtain the required motion data, store the data into the memory built in the chip, and utilize the communication module to externally transmit the data, 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: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a wireless motion sensor with from generating 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), one or more pairs of mutually perpendicular magnetic poles (1) are arranged in the inner ball, one or more mutually perpendicular windings (4) 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 to charge a battery, 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 is electrically connected with an external device through a communication module;
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 micro-voltage rectifying circuit is connected with the winding, and the charging management and protection circuit charges a battery;
the micro-voltage rectifying circuit is as follows: the two ends A1 and A2 of the winding are respectively connected into four transistors P1, P2, N1 and N2, wherein A1 is connected into the grid electrodes of the transistors P2 and N2, the source electrode of P1 and the drain electrode of N1, A2 is connected into the grid electrodes of the transistors P1 and N1, the drain electrode of P2 and the source electrode of N2, the drain electrode of P1 and the source electrode of P2 are connected to a charge management protection circuit after being connected, and the source electrode of N1 and the drain electrode of N2 are connected in series with a voltage stabilizing triode and then are connected to the charge management protection circuit.
2. The wireless motion sensor with self-generating mechanism according to claim 1, wherein each winding is connected in parallel with a micro-voltage rectifying circuit, the parallel micro-voltage rectifying circuits are connected in series, and two ends after the parallel micro-voltage rectifying circuits are connected to the positive electrode and the negative electrode of the charge management protection circuit respectively.
3. The wireless motion sensor with the self-generating mechanism according to claim 1, wherein the charge management protection circuit comprises two triodes T1 and T2, diodes D1 and D2 and protection resistors R1 and R2, an emitter 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, then is connected with the other end of the micro-voltage rectification circuit after passing through the protection resistor R1, a collector electrode of the T1 is connected with an emitter of the T2 and then is connected with one end of a power supply to be charged, and a 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 and D2 which are connected in reverse connection with the protection resistor R2 in series.
4. A wireless motion sensor with self-generating mechanism according to claim 3, wherein the protection resistors R1 and R2 are grounded to the connection terminal of the power source to be charged.
5. The wireless motion sensor with self-generating mechanism of claim 1, wherein the power management and module control dedicated chip performs encryption, error correction coding and error retransmission policies through data transmission between the communication module and an external device.
6. The wireless motion sensor with self-generating mechanism of 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 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210891155.3A CN115189543B (en) | 2022-07-27 | 2022-07-27 | Wireless motion sensor with self-generating mechanism |
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| CN115189543A CN115189543A (en) | 2022-10-14 |
| CN115189543B true CN115189543B (en) | 2023-07-18 |
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