WO2015084912A1

WO2015084912A1 - Wireless power distribution system for law enforcement equipment

Info

Publication number: WO2015084912A1
Application number: PCT/US2014/068282
Authority: WO
Inventors: Michael A. Leabman; Gregory Scott Brewer
Original assignee: Energous Corporation
Priority date: 2013-12-03
Filing date: 2014-12-03
Publication date: 2015-06-11

Abstract

A wireless power distribution system for Law Enforcement equipment is disclosed. The system includes a wireless power transmitter coupled with a power source. The transmitter may form pockets of energy using controlled radio frequencies. Electrical equipment coupled with an electronic receiver may utilize pockets of energy formed by the transmitter to charge or power the electrical equipment. The transmitter coupled with a power source may be carried in a vehicle for portability.

Description

TITLE

WIRELESS POWER DISTRUBFHON SYSTEM FOR

LAW ENFORCEMENT EQUIPMENT

CROSS-REFERENCES TO RELATED APPLICATIONS

[0001] The resent disclosure is related to LIS, non-provisional patent application

Nos. 13/891,430, filed May 10, 2013, entitled "Methodology fov Pockei-fbrmmg"; 13/925,469 filed June 24, 2013, entitled "Methodology for Multiple Poekot-Fonnfeg" 13/946,082 Jled My 19, 2013, entitled "Method for 3 Dimensional Pocket-fbrmfeg"; i 3/891,399, filed July 22, 2013, entitled "Receivers for Wireless Power Transmission''; and 13/891,445. filed July 22, 2013, entitled "Transmitters for Wireless Power Transmission.".

FIELD OF INVENTION

BACKGROUND OF THE INVENTION

[0003] Law enforcement officers are typically required to c n a great deal of equipment w en they are on the field. In addition to a gun, handcuffs and batons, a law mforee en officer is often required to carry many electrical devices in the performance of his her duties. For instance, police patrol officers or a squad of policemen who have been trained to deal with a violent and dangerous situations (SWAT teams) need to carry radios or walkie talkies, flash lights, wearable cameras, GPS, wireless communication earpiece systems, portable digital video recorders (DVRsk night vision goggles, rifle scopes and/or any other law enforcement equipment that may require an electrical power source. All the electrical devices described above may require to be constantly charged, for this reason law enforcement officers may need to carry extra batteries for these devices; however, carrying batteries may not only add additional weight to the equipment each officer carries but also may be troubling and impractical in some situation.;^;,

[0004] Thus, a need xists for an electrical power source that addresses the aforementioned issues.

SUMMARY OF THE INVENTION

[0005] The present disclosure is a wireless power distribution system for Law

Enforcement equipment Law Enforcement officers may be required to carry a great deal of equipment which in most cases are electrical devices, the wireless power distribution system disclosed here may charge or power the electrical devices wireless!y by following the poeket-forrhmg methodology, which is also included here by reference. In one embodiment, the wireless power distribution system may include at least one transmitter coupled with any suitable battery management system in a Law Enforcement vehicle. In another embodiment, a Law Enforcement uniform may be coupled with wireless receiver components that may use the pockets of energy to charge or power the electrical devices, The wireless power distribution system may avoid tedious wired connections and may be more easily installed and reinstalled, Furthermore, the wireless power distribution system may eliminate the need for Law Enforcement officers to carry extra batteries for the electrical devices they use during the performance of their duties,

[0006] A method for wireless power transmission for electrical devices used by law enforcement equipment, comprising the steps of: connecting a pocket-forming transmitter having antenna elements, a RF circuit, a digital signal processor for controlling the RF circuit of the transmitter and communication circuitry to at least one mobile power source: ge erating power RF waves from fee RF circuit in the transmitter; controlling the generated power RF w ves with the digital signal processor in the transmitter; transmitting the power RF waves through antenna elements of the transmitter to a predefined range from the mobile power source; integrating a receiver with co miinication circuitry and antenna elements in a law enforcement uniform.; and capturing the power RF waves forming pockets of energy converging in 3-D space at the receiver i the uniform; and connecting the electrical devices to the receiver in the aniform to power the electrical, devices.

[000?] In other embodiment the wireless power distribution system may he used to charge or power remote controlled vehicles that are often used for espionage, detecting mines or disabling bombs

[0008] Numerous other aspects, features and benefits of the present disclosure may be made apparent from the following detailed description taken together with the drawing figures.

BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Embodiments of the present disclosure are described by way of example with reference to the accompanying figures, which are sohema.de and are not intended to be drawn to scale, Unless indicated as representing prior art, the figures represent aspects of the present disclosure.

[00 i0] FIG, ! illustrates wireless power transmission using pocket-fbnning, according to art embodiment.

[001 i] FIG, 2 illustrates a component level embodiment .for a transmitter, according to an embodiment.

[0012] FIG. 3 illustrates a component level embodiment for a receiver, according to an embodiment [0013] FIG; 4 illustrates a law enforcement officer wearing a uniform with an integrated wireless power receiver, according to an embodiment

[001.4] FIG, 5 illustrates a mobile power source for police officers, according to an embodiment

[0015] FIG. 6 illustrates a mobile power source for SWAT teams, according to an embodiment.

[0016] FIG. 7 illustrates a mobile power source for remote controlled vehicles, according to an embodiment

DETAILED DESCRIPTION OF THE DRAWINGS

Definitions

[001 7] "Pocket-forming" may refer to generating two or more RF waves which converge in 3-d space, forming controlled constructive and destructive interference patterns.

[001.8] "Pockets of energy" may refer to areas or regions of space where energy or power may accumulate in the form of constructive interference patterns of RF waves, [0019] "Ncii-spa.ee'^'' may refer to areas or regions of space where pockets of energy do not form because of destructive interference patterns of RF waves,

[0020] "Transmitter" may refer to a device, including a chip which may generate two or more RF signals, at least ne RF signal being phase shifted and gain adjusted with respect to other RF signals, substantially all of which pass through one or more .RF antenna such that focused RF signals are directed to a target

[0021 ] "Receiver" may refer to a device which may include at least one antenna, at least one rectifying circuit and at least one power converter for powering or charging an electronic device using RF waves.

[0022] "Adaptive pocket-forming'¹ may refer to dynamically adjusting pocket- forming to regulate power on one or more targeted receivers. DESCRIPTION OF THE DRAWINGS

[0023] In the following detailed description, reference is made to the accompanying drawings, which form a part hereof. In ike drawings, which may n t be to scale or to proportion, similar symbols typically identity similar components, unless context dictates otherwise. The illustrative embodiments described in the detailed description, drawings and claims, are not m ant to be limiting. Other embodiments may be used and/or and other changes may be made without departing from the spirit or scope of the present disclosure,

[0024] FIG, 1 illustrates wireless power transmission 100 using poekei-foraiing,

A transmitter 102 may transmit controlled Radio Frequency (RF) waves 104 which may converge in 3-d space. These RF waves may be controlled through phase and/or relative amplitude djustments to form constructive and destructive interference patterns (poeket- ibraiing). Pockets of energy 106 may form at constructive interference patterns and can be 3 -dimensional in shape whereas mill-spaces may be generated at destructive interference patterns, A receiver 108 may then utilize pockets of energy produced by pocket-forming for charging or powering an electronic device, for example a laptop computer 1 10 and thus effectively providing wireless power transmission 100. In some embodiments, there can be multiple transmitters 102 and/or multiple receivers 108 for powering various electronic devices, for example smartphones, tablets, music players, toys and others at the s me time. In other embodiments, adaptive pocket-forming may be used to regulate power on electronic devices.

[0025] FIG. 2 illustrates a component level embodiment for a transmitter 200 which may be utilized to provide wireless power transmission 100 as described in. F10. 1 ; Transmitter 200 may include a housing 202 where at least two or more antenna elements 204_» at least one RF integrated circuit (RFIC 206), at least one digital signs! processor (DSP) or micro-controller 208, and one optional communications component. 210 may be included. Housing 202 can be made of any suitable material which, may allow for signal or wave transmission and/or reception, for example plastic or hard rubber, Antenna elements 204 may include suitable antenna types for operating in frequency bands such as 900 MHz, 2,4 GHz or 5,8 GHz as these frequency bands conform to Federal Communications Commission (FCC) regulations part 18 (Industrial, Scientific and Medical equipment). Antenna elements 204 may include vertical or horizontal polarization, right hand or left hand polarization, elliptical polarization, or other suitable polarizations as well as suitable polarization combinations. Suitable antenna types may include, for example, patch antennas with heights from about 1/8 inches to about 6 inch and widths from about .1/8 inches to about 6 inch. Other antenna elements 204 types can be used, for example nieta-∞aterials_s dipole antennas among others. RFi^'C 206 may include a proprietary chip for adjusting phases and/or relative magnitudes of RF signals which may serve as inputs for antenna elements 204 for controlling pocket-forming. These RF signals may be produced using an external power supply 21.2 and a local oscillator chip (not shown) using a suitable piezoelectric material Micro-controller 208 may thee process information send by a receiver through its own antenna elements for determining optimum times and locations for pockeMornamg. In some embodiments, the foregoing may be achieved ^'through comnntnieations component 210. Communications component 210 may be based on standard wireless communication protocols which may include Bluetooth, Wi-Fi or ZigBee, In addition., commmrications component 210 may be used to transfer other information such as an identifier for the device or user, battery level, location or other such ormation. Other communications component 210 may be possible which may include radar, infrared cameras or sound devices for sonic irianguiation for determining the device's position,

[0026] FIG. 3 illustrates a component level embodiment for a receiver 300 which can be used for powering or charging an. electronic device as exemplified in wireless power transmission 100. Receiver 300 may include a housing 302 where at least one antenna element 304, one rectifier 306, one power converter 308 and an optional communications component 310 may be included, Housing 302 can be made of any suitable material which may allow for signal or wave transmission and or reception, for example plastic or hard rubber. Housing 302 may be an external hardware that may he- added to different electronic equipment, for example in the form of cases, or can be embedded within electronic equipment as well. Antenna element 304 may include suitable antenna types for operating in frequency bands similar to the bands described for transmitter 200 from FIG, 2, Antenna element 304 may include vertical or horizontal polarization, right hand or lei! hand polarization, elliptical polarization., or other suitable polarizations as well, as suitable polarization combinations, Using multiple polarisations can be beneficial in devices where there may not tie a preferred orientation daring usage or whose orientation may vary continuously through time, for example a smartphone or portable gaming system. On the contrary, for devices with well-defined orientations, for example a two-handed video game controller, there might be a preferred polarization tor antennas whic may dictate a ratio for the number of antennas of a given polarization. Suitable antenna types may Include patch antennas with heights from about 1/8 inches to about 6 inch and. widths from about 1/8 inches to about 6 inch. Patch, antennas may have the advantage that polarization may depend on connectivity, he, depending on which side the patch, is fed, the polarization may change. This may further prove advantageous as a receiver, such as receiver 300, may dynamically modify its antenna polarization to optimize wireless power transmission. Rectifier 306 may include diodes or resistors, kduetoTS or capacitors to rectify the alternating current (AC) voltage generated by antenna element 304 to direct current (DC) voltage. Rectifier 306 may be placed as close as is technically possible to antenna element 304 to minimize losses. After rectifying AC voltage, DC voltage may be regulated using power converter 308. Power converter 308 can he a DC-DC converter which .may help provide a constant voltage output, regardless of input, to an electronic device, or as in this embodiment to a battery 312. Typical voltage outputs can be from about 5 volts to about 10 volts, Lastly, communications component 310, similar to that of transmitter 200 from FIG, 2, may be included in receiver 300 to communicate with a transmitter 200 or to other electronic equipment [0027] FIG, 4 illustrates a law enforcement officer wearing a uniform with an integrated receiver 400, similar to receiver 300 described in FIG-. 3. Uniform with aa integrated receiver 400 may include electrical devices 402 such as radios, night vision goggles, and wearable cameras among others. Electrical devices 402 may be coupled to receiver 404 through wires strategically distributed in the uniform. Receiver 404 may then have an array of antenna elements 304 distributed oil the grid area., as shown in FIG. 4, to receive pockets of energy 106. Receiver 404 may then utilize pockets of energy 106 produced by pocket-forming for charging or powering electrical devices 402,

[0028] FIG^'. 5 illustrates a mobile power source 500 for police officers wearing uniforms with an integrated receiver 400, as described in FIG. 4, Mobile power s urce 500 may also serve electrical devices 402 coupled with receivers 300 independently.

[0029] In FIG. 5. a police car 502 may include a transmitter 200 which may be placed on top of siren 504, as shown in FIG. 5, Transmitter 200 may be coupled to any suitable battery management system in police ear 502 to get the power necessary to enable wireless power transmission 100. Transmitter 200 may include an array of antenna elements 204 which m be distributed along the edge of the structure located, on top of siren 504, as shown FIG. 5. Transmitter 200 may then transmit controlled Radio Frequency (RF) waves 104 which may converge in 3-d space. These RF waves may be controlled through phase and/or relative amplitude adjustments to form eonsiuwtive and destructive interference patterns (pockei-forming). Uniforms with an integrated receiver 400 may then utilize pockets of energy 106 produced by pocket-forming for charging or powering electrical devices 402,

[0030] FIG-. 6 illustrates a mobile power source 600 for specialized police officers wearing unifonns with an integrated receiver 400, as described- in FIG. 4. Mobile power source 600 may also serve electrical devices 402 coupled with receivers 300 independently,

[0031] In FIG. 6, a SWAT Mobile Command Truck 602 may include a transmitter 200 which may be placed on top of siren 604, as shown in FIG, 6. Transmitter 200 may be coupled to any suitable ^"battery management system in SWAT Mobile Command Truck 602 to get the power necessary to enable wireless power transmission 100. Transmitter 200 may include array of antenna elements 204 which may ^"be distributed along the edge of the structure located on. top of siren 604, as shown in FIG. 6. Transmitter 200 may then transmit controlled. Radio Frequency (RF) waves 104 which may converge in 3-d space. These RF waves may be controlled through phase and/or relative amplitude adjustments to form constructive and destructive interference patterns s (pocket-forming). Uniforms with, an integrated receiver 400 may then utilize pockets of energy 106 produced by pocket-formiag for charging or powering electrical devices 402.

[0032] FIG. 7 illustrates a mobile power source 700 for remote controlled vehicles 702 designed for espionage, detecting mines or disabling bombs may be powered wireless! y. In this embodiment, remote control and power may be critical factors to prevent exposure or harm to police officers 704, la figure 7, a police car 706 .may include a transmitter 200 which, may be placed on ^'top of siren 70S, as shown in FIG, 7, Transmitter 200 m y be coupled to any suitable- battery management system in police car 706 to get the power necessary to enable wireless power transmission 100. Transmitter 200 may include an array of antenna elements 204 which may be distributed along the edge of the structure located on top of siren 70S, as s o n in FIG. 7. Transmitter 200 may then transmit controlled Radio Frequency (RF) waves 104 which may converge in 3- d space. These RF waves may be controlled through phase and/or relative amplitude adjustments to form constructive and destructive interference patterns (pocket-forming). Remote controlled vehicle 702 may be coupled with a receiver 300. A receiver 300 may then utilize pockets of energy 106 produced by pocket-forming for charging or powering remote controlled vehicle 702.

[0033] While various aspects and embodiments have been disclosed herein, other aspects and embodiments are contemplated. The various aspects and embodiments disclosed herein are for purposes of illustration and are not. intended to be Hraiting, with the true scope and spirit being indicated by the fbiiowing claims.

Claims

Having thus described the invention, We claim;

1. A method for wireless power transmission for electrical devices used by law enforcement equipment, comprising the steps of:

emitting RF waves from a pocket-forming transmitter each having a radio frequency integrated, circuit, antenna elements, and communication circuitry;

generating pockets of energy from the transmitter to converge in 3-d space at predetermined locations within a predefined range;

incorporating a receiver within, a law enforcement uniform;

attaching the electrical devices to the receiver; and

converting the pockets of energy in 3-d space from the transmitter to the receiver located within the law enforcement uniform to charge or power the electrical devices.

2. The method for wireless powe transmission for electrical devices ^'used by law enforcement equipment of claim 1 , wherein the electrical devices are radios, night vision goggles, wearable cameras, flashlights, sensors and other portable law enforcement electrical devices for use in law enforcement.

3. The method for wireless power transmission for electrical devices used with law enforcement pip ent of claim 1_} wherein the electrical de vices are coupled to the receiver through wires strategically distributed in the uniform.

4. The method for wireless power transmission for electrical devices used by law- enforcement equipment of claim 1 , wherein the transmitter and receiver include antenna elements,

5. The method for wireless power transmission for electrical devices used by law enforcement equipment of claim 4, wherein the receiver antenna elements are in an array,

6. The method for wireless power transmission for electrical devices used by law- enforcement equipment of claim 5, further including the step of distributing the receiver antenna elements in a grid area on the uniform to receive the pockets of energy and the step of utilizing the pockets of energy from the pocket- forming transmitter to manage power requirements of each of the electrical devices.

7. The method for wireless power transmission for electrical devices used by law enforcement equipment of claim 4. wherein the antenna elements of the tr nsmitter and receiver operate in frequency bands of 900 MHz, 2.4 GHz, 5.8 GHz or other approved law enforcement frequency bands.

8. The method for wireless power transmission for electrical dev ces used by law enforcement equipment of claim L wherein the communication circuitry are

communication components including radar, infrared cameras or sound devices for sonic trianguiation for determining the location of the receiver on the unifonn.

9. The method for wireless power transmission for electrical devices used by law enforcement equipment of claim wherein, the recei ver is integrated into the uniform of law enforcement

10. The method for wireless power teismission for electrical devices used by law enforcement equipment of claim 1, wherein the transmitter is connected to a mobile power source for generating pockets of energy from the transmitter to converge in 3-d space at predetermined locations within the predefined range for the receiver on the unifonn,

11 : The method for wireless power transmission tor electrical devices used by law enforcement equipment of claim 1 , wherein the transmitter is placed on top of a mobile vehicle and farther including the step of coupling the transmitter to a suitable battery management system located within the vehicle to enable wireless power transmission, i 2. A method for wireless power transmission for electrical devices used by law enforcement equipment, comprising the steps of;

connecting a rwcket-foraiirig transmitter having antenna elements, a. RF circuit, a digital signal processor for controlling the RF circuit of the transmitter and

communication circuitry to at least one mobile power source;

generating power RF waves from the RF circuit in the transmitter;

controlling the generated power RF waves ^"with the digital signal processor in the transmitter;

transmitting the power RF waves through antenna elements of the transmitter to a predefined range from the mobile power source;

integrating a receiver with communication circuitry and antenna elements in a law enforcement uniform; capturing the power RF waves forming pockets of energy converging m 3-D space a the receiver in the uniform; and

connecting the electrical devices to the receiver in the uniform to power the electrical devices.

13. The method for wifeless power transmission for electrical devices used by law enforcement equipment of claim 1.2, wherein the mobile power source is a battery management system within a motor vehicle.

14. The method for wireless power transmission for electrical devices used by law enforcement equipment of claim 12, further includes the step of communicating information between the transmitter and receiver through communication circuitry and txmnnnnieation protocols in both the transmitter and receiver to identify the location of the receiver on the uniform for powering the connected electrical devices,

15. The method for wireless power transmission for electrical devices used by law enforce ent equipment of claim 1 % wherein the digital signal processor is a microprocessor controlling the time emission of pocket-forming, direction of pocket- forming, ^'bounce angle of the pockets of energy, intensity of the pockets of energy when controlling the pocket-forming transmitter and further including the step of transmitting the pockets of energy to multiple receivers located on uniforms within the predetermined range of the transmitter.

16. The method for wireless powe -transmission for electrical devices used by law enforcement equipment of claim 12, wherein the digital signal processor manages and controls the pockets of energy to the receiver on the uniform by controlling the communioation circuitry on die transmitter.

17. The method for wireless power transmission for electrical devices used by law enforcement equipment of claim 1.2, wherein the mobile power source is a battery management system in the police car and further includes the step of coupling the transmitter mounted on a siren on a top of th police car to the battery management system to enable the wireless power transmission to the receiver integrated Into the uniform for powering the electrical devices connected to the receiver in the uniform. 18, The method ibr wireless power transmission for electrical devices used by law enforcement equipment of claim 12, wherein the power to RF waves are managed by the digi tal, signal processor to produce power RF waves in a wide variety of frequencies, wavelength,, intensities and other RF characteristics for powering the electrical devices connected to the receiver on the ratiform.

19, The method ibr wireless power transmission for electrical devices used by law enforcement equipment of claim 12, wherein the mobile power source and transmitter are mounted on a vehicle configured to power multiple receivers located on multiple uniforms within the predefined range to power the electrical devices connected to the multiple receivers.

20, The method for wireless power transmission for electrical devices used by law enforcement equipment of claim 12, wherein S e communication circuitry uses standard wireless communication protocols such as Bluetooth, Wi-Fi,, Zigbee or FM radio between the transmitter and receiver.

21 , The method for wireless power transmission for electrical devices used by law enforcement equipment of claim 12, wherein the antenna elements in the transmitter and receiver operate in the frequency bands of 900MHz, 2.4GHz or 5.8GHz,

22, The method for wireless power transmission for electrical devices used by law enforcement equipment of claim 12, further includes the step of transmitting pockets of energy to a remote controlled vehicle with the integrated receiver to power the vehicle for espionage, detecting mines or disabling bombs o prevent exposure or harm to law enforcement during such operations,

23, An apparatus for wireless power transmission to an electrical device used by a law enforcement, comprising:

a poeket-forniing transmitter having antenna elements,, a RF circuit, a digital signal processor for controlling the RF circuit of the transmitter and communication circuitry connected to at least one mobile power source;

power RF waves generated from the RF circuit in the transmitter ;

a digital signal processor In the transmitter lh.r controlling the generated power RF waves; pockets of energy configured from the power RF waves controlled by the digital s gnal processor and transmitted through antenna elements of the transmitter to a predefined range from the mobile power source;

a receiver with comraunicalioB. eireaitry and antenna elements integrated in a law enforcement uniibrm for capturing the pockets of energy converging in 3-D space ai the receiver in the uniform; and

wherein the electrical devices are coupled to the receiver in the uniform to power the electrical devices,

24, The apparatus for wireless power traosmission to an electrical device used, by a law enforcement 23, wherei the transmitter and receiver communication circuitry utilizes Bluetooth, infrared, Wi-Fi, FM radio or Zig^'bee signals for the various communication protocols between the receiver and the transmitter.

25. The apparatus for wireless power transmission to an electronic device of claim 23, wherei the mobile power source is a battery management system within the law enforcement vehicle for powering any electrical device coupled to the integrated receiver within the uniform to the transmitter predefined range.

H