Environmentally-powered wireless sensor module

Description

This application is related to U.S. patent application Ser. No. 11/561,277, entitled “Hybrid Thin-Film Battery,” filed on Nov. 17, 2006, U.S. patent application Ser. No. 11/687,032, entitled “Metal Film Encapsulation,” filed on Mar. 16, 2007, U.S. patent application Ser. No. 11/748,471, entitled “Thin Film Battery on an Integrated Circuit or Circuit Board and Method Thereof,” filed on May 14, 2007, U.S. Patent Application Ser. No. 61/087,927, entitled “Energy Device with Integral Collector Surface for Electromagnetic Energy Harvesting and Method Thereof,” filed on Aug. 11, 2008, and U.S. Patent Application Ser. No. 61/096,415, entitled “Energy Device with Integral Collector Surface for Electromagnetic Energy Harvesting and Method Thereof,” filed on Sep. 12, 2008, which are incorporated herein by reference in their entirety.

TECHNICAL FIELD AND BACKGROUND OF THE INVENTION

This invention relates to an apparatus, method, and system for communicating data. More particularly, this invention relates to a device capable of being incorporated on a substrate and may be powered by harvesting energy from any ambient source, such as, for example, radio frequency, solar power, wind, vibration or human activity which may be stored and/or converted to communication signals to transmit information.

As electronics have become smaller and more durable, there has been a continuous progression towards using electrical devices in ways never before thought possible. The energy source used to operate these devices may typically be a battery, which can be embedded within the electronics and configured for a single use, configured to be replaceable, or configured to be rechargeable. Each of these current options have shortcomings, as an embedded battery may render associated electronics useless once the battery is discharged or damaged, replaceable batteries require additional space and material to house, and an externally rechargeable battery requires additional material for a connecting plug and a battery charger. Each of these options is typically not ideal, as applications tend to demand equipment that can be lighter, without additional power cords and usable during times when access to an electrical wall outlet or other external power source is unavailable.

Thus, a demand exists to have an electronic device that does not require large batteries and may be able to generate its own energy.

As the ability, desire, and reality of global travel has become more commonplace, consumers often find themselves in need of portable electronic devices. Powering these devices may be a challenge, however, as there are many different voltages and frequencies of electricity power supplies in different countries. Electrical wall outlets are typically needed to charge many consumer devices ranging from electric shavers to computers, cell phones, and other devices that may send or receive signals.

Thus, a demand exists to have an electronic device that may be capable of operating without the use of an electrical wall outlet.

SUMMARY OF INVENTION

Ambient energy exists in many forms and in abundant quantity, providing an opportunity to put that energy to a beneficial electrical use with the assistance of an energy harvesting device. The energy harvester may include, for example, a device that converts specific types of ambient energy into electrical energy, which can then be stored in an electrical energy storage device such as a battery or capacitor. Depending on the application, harvested energy may, for example, be used instantaneously or stored in a component such as a battery and used at defined time intervals or when requested by a remote device.

It is one object of certain exemplary embodiments of this invention to use an energy harvester, such as, for example, a piezoelectric mechanism, and connect it to or incorporate it onto a substrate to harvest energy from one or more non-conventional sources and use that energy to recharge a device such as a battery that may be located such that it, for example, is an integral and inseparable part of a substrate.

The present invention may include, for example, a unique arrangement of a microcontroller, a signal transmitter, a signal receiver, an energy storage device and an energy harvester. In some embodiments, the energy harvester may be a piezoelectric sensor that converts motion/vibration energy into electric energy, wherein the converted energy may be used to recharge a battery, thereby providing power to a signal receiver/transmitter. The signal receiver/transmitter may be, for example, a ZigBee transceiver. In other embodiments, the piezoelectric mechanism may perform a dual function as a converter of motion energy to electrical energy and also a pedometer.

Certain embodiments of the present invention are also included in a system having a transmitter for transmitting a message to an external receiver. The system may also have one or more sensors that may be monitored by a microcontroller. Certain signals from the sensors may be processed by the microcontroller and the processed information may be transmitted to a receiver that may be located remotely.

In some embodiments of the invention, the device may receive a signal from one or more GPS satellites to determine the geographical location of said device.

For improved performance in this application, also disclosed is an example of a manufacturing process for a thin-film battery having a heat and pressure-resilient separation layer for incorporating the battery cell onto a substrate.

BRIEF DESCRIPTION OF DRAWING

Some features and advantages of the invention are described with reference to the drawing of a certain preferred embodiment, which is intended to illustrate and not to limit the invention.

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention that together with the description serve to explain the principles of the invention:

FIG. 1 is a diagram of an embodiment of the present invention showing the subcomponents of the device.

FIG. 2 is a diagram of an embodiment of the present invention showing the step-by-step construction of an embodiment of one contemplated device.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

It is to be understood that the present invention is not limited to the particular methodology, compounds, materials, manufacturing techniques, uses, and applications described herein, as these may vary. It is also to be understood that the terminology used herein is used for the purpose of describing particular embodiments only, and is not intended to limit the scope of the present invention. It must be noted that as used herein and in the appended claims, the singular forms “a,” “an,” and “the” include the plural reference unless the context clearly dictates otherwise. Thus, for example, a reference to “an element” is a reference to one or more elements, and includes equivalents thereof known to those skilled in the art. Similarly, for another example, a reference to “a step” or “a means” is a reference to one or more steps or means and may include sub-steps or subservient means. All conjunctions used are to be understood in the most inclusive sense possible. Thus, the word “or” should be understood as having the definition of a logical “or” rather than that of a logical “exclusive or” unless the context clearly necessitates otherwise. Structures described herein are to be understood also to refer to functional equivalents of such structures. Language that may be construed to express approximation should be so understood unless the context clearly dictates otherwise.

Unless defined otherwise, all technical and scientific terms used herein have the same meanings as commonly understood by one of ordinary skill in the art to which this invention belongs. Preferred methods, techniques, devices and materials are described although any methods, techniques, devices, or materials similar or equivalent to those described may be used in the practice or testing of the present invention. Structures described herein are to be understood also to refer to functional equivalents of such structures.

All patents and other publications are incorporated herein by reference for the purpose of describing and disclosing, for example, the methodologies described in such publications that might be useful in connection with the present invention. These publications are provided solely for their disclosure prior to the filing date of the present application. Nothing in this regard should be construed as an admission that the inventors are not entitled to antedate such disclosure by virtue of prior invention or for any other reason.

FIG. 1 shows the detailed process occurring within the present invention. The energy 110, which may result from radio frequency, solar power, wind power, vibration, human activity such as walking or jogging, water movement, temperature variations and rotational movements reaches an energy harvesting mechanism 120 and may be converted into a usable and storable form of energy, such as, for example, electricity. The energy harvesting mechanism 120 uses the harvested energy to recharge a rechargeable energy storage device 130. In some embodiments, the process of energy harvesting and recharging an energy storage device may be performed under the monitoring and regulation of, for example, a power management unit 130. The energy storage device 130 may store the energy and, when needed, power the microcontroller 150 and the transmitter and/or receiver 140 depending on whether a signal is being sent out, received, or both. The transmitter and/or receiver 140 may be, for example, a ZigBee transceiver. The transceiver may be part of a wireless mesh network, which is one of the possible implementations of a Zigbee network. Independent nodes in a mesh may provide self repairing features if a failure at one of the nodes is discovered. Therefore, mesh nodes relying on energy harvesting may be more robust over the long run, being able to “hibernate” during extended periods when the energy source is not available. A sensor 160 may be used to measure any desirable physical quantities depending on the use of the device.

FIG. 2 shows an example of the steps that may be used to construct some embodiments of the present invention on a substrate, such as, for example, a thin, flexible substrate. Step 200 shows the beginning of the construction where an energy storage device, shown in this example as a thin-film battery, as the foundation. Step 210 shows attaching a substrate to the energy storage device. Step 220 may be performed to add a transmitter/receiver mechanism to the substrate. Step 230 may be performed to add a microcontroller onto the substrate and connecting it to the transmitter/receiver mechanism. Step 240 may be performed to add an energy harvesting mechanism and power management unit to the substrate.

In some embodiments, the substrate may be rigid or semi-rigid. In several embodiments, the substrate may be a thin, flexible substrate. The substrate may be embedded internally, laminated, glued or mechanically attached with screws or otherwise for installation onto the surface of a target application.

In several embodiments, the energy harvesting mechanism is based on a piezoelectric transducer. This embodiment may be used by taking applied mechanical stress or pressure and transforming it into electrical energy to recharge or be stored in an energy storage device. In other embodiments, the energy harvesting mechanism is based on a radio frequency energy transducer. In some embodiments, the energy harvesting mechanism may also be a device that can convert solar power, wind power, vibration, pedestrian activity such as walking or jogging, water movement, temperature variations or rotational movements into usable energy such as electricity.

In addition to an electrochemical storage device, such as a battery or thin-film battery, the energy storage component may be an electrical storage device such as a capacitor or thin-film capacitor, but may also be a mechanical energy storage device, such as, for example, a flywheel, micro-flywheel, micro electro-mechanical system (MEMS), or a mechanical spring. In several embodiments, the thin-film battery may contain a metallic lithium anode. In some embodiments, the thin-film battery may not contain a metallic lithium anode but may instead contain a Li-ion anode or a Li-free anode. The energy storage component may also be an electro-mechanical device, such as a piezoelectric element or a magneto-electric element, similar to the invention disclosed in U.S. Pat. No. 7,088,031, entitled “Method and Apparatus for an Ambient Energy Battery or Capacitor Recharge System” which is herein incorporated by reference in its entirety. The energy storage component may also be a thermal energy storage device, such as a thermal mass container, or it could be a chemical energy storage device, such as, for example, a hydrogen generator with hydrogen container or an ozone generator with ozone container. Each one of these devices may be used to store energy based on exemplary elements of the system.

In some embodiments, the system on the substrate contains a receiver that may receive a signal from one or more GPS satellites to determine the geographic location and direction of the device, as well as the speed of the device if the device happens to be in motion.

In some embodiments, one or more sensors may measure any number of different physical qualities. In some embodiments, one sensor may be measuring the weather in which case it may be, for example, a thermometer to measure the temperature, a hydrometer to measure the humidity, an anemometer to measure the velocity or pressure of the wind or a barometer to measure the atmospheric pressure. A barometer in combination with a microprocessor may be able to detect changes in pressure and predict changes in the weather. In several embodiments, one sensor may be used to measure pressure and determine changes in altitude.

In some embodiments where the energy storage device is a thin-film battery, the thin-film battery may have a thickness that does not exceed 1 cm and a lateral area that may be less than 10 square inches. In another embodiment, the lateral area of said thin-film battery may be less than 0.25 square centimeters.

In a different embodiment, the thin-film battery may have a heat and pressure-resilient separation layer for purposes of incorporating the battery cell into the substrate manufacturing process.

In the several embodiments in which the energy storage device is a rechargeable device, such as, for example, a thin-film battery, this will present an opportunity whereby the present invention may be capable of performing nearly indefinitely. The present invention may, for example, allow for energy created through radio frequency, wind power, solar power, vibration, human activity, water movement, temperature variations and rotational movements to be harvested in an energy harvesting mechanism and for that harvested energy to ensure that the rechargeable energy storage device may be so charged.

This invention has been described herein in several embodiments. It is evident that there are many alternatives and variations that can embrace the performance of ceramics enhanced by the present invention in its various embodiments without departing from the intended spirit and scope thereof. The embodiments described above are exemplary only. One skilled in the art may recognize variations from the embodiments specifically described here, which are intended to be within the scope of this disclosure. As such, the invention is limited only by the following claims. Thus is intended that the present invention cover the modifications of this invention provided they come within the scope of the appended claims and their equivalents.

Claims

1. An apparatus comprising: a substrate having a first side surface and a second side surface;an energy harvesting module on the second side surface of said substrate;an energy storage device on the first side of said substrate opposite to the energy harvesting module on the second side surface of the substrate and connected to said energy-harvesting module through said substrate between the first and second side surfaces; anda microprocessor located on the second side of said substrate opposite to the energy storage device on the first side surface of the substrate and connected to said energy storage device through said substrate between the first and second side surfaces,wherein said first and second side surfaces oppose each other.
2. The apparatus of claim 1, further comprising a power management unit connected to said energy harvesting module.
3. The apparatus of claim 1, wherein said substrate comprises any device selected from the group of: rigid substrate, semi-rigid substrate and flexible substrate.
4. The apparatus of claim 1, wherein said substrate comprises any material selected from the group of: polyimide, polyester, polyethylene naphthalate, polyetherimide, aramid, and epoxy.
5. The apparatus of claim 1, further comprising at least one sensor connected to said microprocessor.
6. The apparatus of claim 1, further comprising at least one signal transmitter connected to said microprocessor.
7. The apparatus of claim 1, further comprising at least one signal receiver connected to said microprocessor.
8. The apparatus of claim 1, wherein said energy-harvesting module comprises any device selected from the group of: piezoelectric transducer, radio-frequency transducer, solar cell, wind turbine, vibration energy scavenger, water movement-to-electric energy converter, rotational movement-to-electric energy converter, and temperature variation-to-electric energy converter.
9. The apparatus of claim 5, wherein said at least one sensor comprises any device selected from the group of: an altimeter, a pressure gauge, a thermometer, a barometer, a hygrometer, an accelerometer, and an anemometer.
10. The apparatus of claim 1, wherein said energy storage device comprises any device selected from the group of: battery, thin-film battery, capacitor, thin-film capacitor, magneto-electric element, piezoelectric element, thermal mass container, flywheel, micro-flywheel, micro electro-mechanical system (MEMS), mechanical spring, hydrogen generator with hydrogen container, and ozone generator with ozone container.
11. The apparatus of claim 1, further comprising an energy conversion component connected to the energy harvesting module.
12. The apparatus of claim 1, wherein said energy storage device comprises a thin-film battery with a total thickness that does not exceed 1 centimeter.
13. The apparatus of claim 12, wherein the lateral area of said thin-film battery does not exceed 10 square inches.
14. The apparatus of claim 12, wherein the lateral area of said thin-film battery does not exceed 0.25 square centimeters.
15. The apparatus of claim 12, wherein said thin-film battery contains a heat and pressure-resilient separation layer.
16. The apparatus of claim 12, wherein said thin-film battery contains a metallic lithium anode.
17. The apparatus of claim 12, wherein the electroactive element within said thin-film battery comprises lithium.
18. The apparatus of claim 12, wherein said thin-film battery comprises a lithium-ion cell.
19. The apparatus of claim 12, wherein said thin-film battery is a lithium-free battery.
20. The apparatus of claim 7, wherein said signal receiver receives a signal from a GPS satellite.
21. The apparatus of claim 7, wherein said signal receiver comprises a ZigBee transceiver.
22. A method for communicating information comprising: converting energy into a useful form on a second side surface of a substrate;storing said useful form of energy on a first side surface of the substrate by a connection through said substrate between the first and second side surfaces;powering a processing unit on the second side surface of said substrate opposite to the energy storage device on the first side surface of the substrate with said stored energy on said first side surface of said substrate;monitoring at least one parameter with at least one sensor on said second side surface of the substrate;communicating the monitored parameter to said processing unit powered with said stored energy; andprocessing said monitored parameter into user data,wherein said first and second side surfaces oppose each other.
23. The method of claim 22 further comprising: receiving GPS signals from one or more GPS satellites; anddetermining the location of the device from said GPS signals.
24. An apparatus comprising: an energy storage device;a substrate having a first side surface positioned on the energy storage device;an energy harvesting mechanism on a second side surface of said substrate and connected through said substrate between said first and second side surfaces to said energy storage device; anda microprocessor located on said second surface of said substrate opposite to the energy storage device on the first side surface of the substrate and connected through said substrate between said first and second side surfaces to said energy storage device,wherein said first and second side surfaces oppose each other.

RELATED APPLICATIONS

This application is related to and claims priority under 35 U.S.C. §119 to U.S. Provisional Patent Application Ser. No. 61/103,746, entitled “Environmentally-Powered Wireless Sensor Module,” filed on Oct. 8, 2008, which is incorporated herein by reference in its entirety.

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Related Publications (1)

	Number	Date	Country
	20100090655 A1	Apr 2010	US

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	Number	Date	Country
	61103746	Oct 2008	US

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