WO2010088310A1 - Vehicle speed detection means for power generation system - Google Patents
Vehicle speed detection means for power generation system Download PDFInfo
- Publication number
- WO2010088310A1 WO2010088310A1 PCT/US2010/022291 US2010022291W WO2010088310A1 WO 2010088310 A1 WO2010088310 A1 WO 2010088310A1 US 2010022291 W US2010022291 W US 2010022291W WO 2010088310 A1 WO2010088310 A1 WO 2010088310A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- vehicle
- treadle
- infrared
- energy harvester
- speed
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
- H02K7/1807—Rotary generators
- H02K7/1853—Rotary generators driven by intermittent forces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
- F03G7/08—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for recovering energy derived from swinging, rolling, pitching or like movements, e.g. from the vibrations of a machine
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/02—Additional mass for increasing inertia, e.g. flywheels
- H02K7/025—Additional mass for increasing inertia, e.g. flywheels for power storage
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
- H02K7/07—Means for converting reciprocating motion into rotary motion or vice versa using pawls and ratchet wheels
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
Definitions
- the present invention is directed toward devices and methods of harvesting vehicle energy, and more specifically, toward a vehicle speed detection means for harvesting vehicle energy.
- the exemplary embodiments of the invention make productive use of the energy that is normally wasted (in the form of heat) in reducing the speed of motor vehicles on exit ramps, toll plazas etc., etc.
- the vehicle energy harvester can absorb mechanical energy from passing (or breaking) vehicles and convert the mechanical energy to electrical energy using, for example, shaft driven generators.
- the disclosed embodiments provide a vehicle energy harvester and power generation system that is simple to install, provides a short payback period, and has a scalable configuration. More particularly, the disclosed embodiments can provide a simple and reliable mechanical configuration that can withstand sever environments. The low cost configuration of the system may provide for faster payback of the expense of the system, and therefore, make the system more practical and desirable for practical applications.
- the disclosed embodiment also can provide a scalable configuration that may be particularly advantageous for use at locations, such as exits ramps, toll plazas, hills, among other locations.
- the exemplary embodiments can include a vehicle speed sensor.
- the embodiments can provide important advantages.
- the exemplary unit can be used on exit ramps and other traffic lanes where motor vehicles approaching at a high rate of speed are required to reduce speed to comply with local road/traffic conditions.
- the disclosed embodiments can absorb a small portion of a vehicle's kinetic energy and convert it to electrical energy.
- An exemplary embodiment of the invention is directed to, for example, a vehicle energy harvester including a subunit having an upper surface forming a roadway surface, a vehicle activated treadle on the subunit, the vehicle activated treadle moveable between a first position in which an upper surface of the treadle is at an angle with respect to the upper surface of the roadway surface and a second position in which the upper surface of the treadle is flush with the upper surface of the roadway surface, a generator that generates power in response to movement of the vehicle activated treadle, and a vehicle speed detection device that detects a speed of a vehicle travelling over the roadway surface based on a speed of movement of the vehicle activated treadle.
- Another exemplary embodiment of the invention is directed to, for example, a vehicle energy harvester comprising a plurality of subunits each having an upper surface forming a roadway surface, a vehicle activated treadle on at least one of the plurality of subunits, the vehicle activated treadle moveable between a first position in which an upper surface of the treadle is at an angle with respect to the upper surface of the roadway surface and a second position in which the upper surface of the treadle is flush with the upper surface of the roadway surface, a generator that generates power in response to movement of the vehicle activated treadle, and a vehicle speed detection device that detects a speed of a vehicle travelling over the roadway surface based on a speed of movement of the vehicle activated treadle.
- a vehicle energy harvester comprising a subunit having an upper surface forming a roadway surface, a vehicle activated treadle on the subunit, the vehicle activated treadle moveable between a first position in which an upper surface of the treadle is at an angle with respect to the upper surface of the roadway surface and a second position in which the upper surface of the treadle is flush with the upper surface of the roadway surface, a generator that generates power in response to movement of the vehicle activated treadle, and vehicle speed detection means for detecting a speed of a vehicle travelling over the roadway surface based on a speed of movement of the vehicle activated treadle.
- Figures 1 is a schematic top view of a power absorber unit of a vehicle energy harvester.
- Figure 2 is a schematic perspective view illustrating a portion of a vehicle energy harvester.
- Figure 3 is a schematic side view of a vehicle energy harvester having vehicle speed detection means.
- Figure 4 is a schematic top view of a vehicle energy harvester having vehicle speed detection means.
- FIGS. 1 - 4 illustrate an exemplary vehicle energy harvester 10.
- the exemplary embodiments can make productive use of the energy that is normally wasted (in the form of heat) in reducing the speed of motor vehicles on exit ramps, toll plazas etc., etc.
- the vehicle energy harvester 10 can absorb mechanical energy from passing (or breaking) vehicles and convert the mechanical energy to electrical energy using, for example, shaft driven generators. Other means for converting the mechanical energy to electrical energy also are contemplated.
- the electric power from the generators can be converted, metered, and fed into the commercial power grid.
- each site can be equipped with wireless communications to monitor the status and/or output of the system.
- the disclosed embodiments can include individual assemblies with integral generators.
- Other generator configurations also are possible, such as separate generators.
- the vehicle energy harvester unit 10 can be a low-profile surface mounted assembly.
- the vehicle energy harvester unit 10 can include an entry ramp 12 and an exit ramp 14.
- the vehicle energy harvester unit 10 can include a plurality of subunits 16 having a top surface or driving surface 17.
- Each subunit can include one or more vehicle activated treadles 18.
- each subunit 16 can include a generator unit 20.
- the vehicle energy harvester unit 10 can be set into the road surface.
- the surface mounted assembly may require minimal installation effort.
- the unit count can be scaled to road/breaking needs.
- each generator unit 20 can feed a common power summing/conversion unit 22.
- a simple cable interconnect 24 can be provided to connect each generator unit 20 to the common power summing/conversion unit 22.
- a fail safe configuration can protect the system against individual unit failures.
- the individual absorber units 16 can be connected via cable assemblies 24.
- the input power can be summed and applied to a low-loss inverter unit.
- the power can be converted immediately to a form that is transmittable to the power grid.
- the output can be metered and applied to the power grid for transmission.
- an exemplary embodiment of a subunit 16 of a vehicle energy harvester unit 10 can include spring-loaded treadles 18 having a treadles gear 30 engaging a drive gear 32.
- the drive gear 32 is coupled to a shaft 34.
- one or more vehicle tires force the spring-loaded treadles 18 down as they roll over the treadles 18.
- the treadle gears 30 drive the plurality of drive gears 32, which rotate the shaft 34.
- the shaft 34 winds a torsion spring 36, thereby absorbing the treadle drive transient.
- a pawl can lock the shaft 34 as rotation ends.
- the torsion spring 36 rotates a flywheel 38, thereby spreading the impulse of the treadle drive over time to extend output to a generator 40.
- the flywheel 38 can turn a generator 40, such as a hydro pump.
- the generator 40 in turn, can generate electric power for sale/use/storage.
- FIGS. 3 and 4 an exemplary embodiment of a vehicle energy harvester 10 having vehicle speed detection means will now be described.
- the present invention recognizes that the known conventional devices do not have a means for determining the speed of oncoming vehicles.
- the embodiments of the invention address and solve these problems and improve the utility of a treadle based energy conversion systems according to the embodiments of the invention.
- the exemplary embodiments can provide important advantages in that vehicles traveling faster than the posted speed limit can be slowed by the vehicle energy harvester unit 10 and a portion of the vehicle's kinetic energy can be converted to electricity rather than wasted as heat from the vehicles braking system. Conversely, vehicles traveling at or below the posted speed limit can be allowed to pass unimpeded.
- An exemplary embodiment provides a vehicle energy harvester unit 10 that can be used, for example, on exit ramps and other traffic lanes where motor vehicles approaching at a high rate of speed are required to reduce speed to comply with local road/traffic conditions.
- the embodiments of the vehicle energy harvester unit 10 can absorb a small portion of a vehicle's kinetic energy and convert it to electrical energy. In cases where slower moving vehicles are traveling at or below the local speed limit on the exit ramp, it may be desirable to allow such vehicles to pass unimpeded and not slow them any further.
- the exemplary vehicle energy harvester unit 10 can be equipped with vehicle speed detection means, such as a vehicle speed sensor or the like, to accomplish this function.
- vehicle speed detection means such as a vehicle speed sensor or the like
- an exemplary embodiment of the vehicle energy harvester unit 10 can include vehicle speed detection means or a vehicle speed detection assembly having, for example, an infrared (IR) emitter 50, an infrared (IR) detector 52, and a rotating arm portion 54 coupled to the treadle 18.
- vehicle speed detection means or a vehicle speed detection assembly having, for example, an infrared (IR) emitter 50, an infrared (IR) detector 52, and a rotating arm portion 54 coupled to the treadle 18.
- IR infrared
- IR infrared
- IR infrared
- the infrared (IR) detector 52 can detect an infrared beam from the infrared (IR) emitter 50.
- the rotating arm portion 54 can be configured to interpose the infrared (IR) emitter 50 and the infrared (IR) detector 52 during movement of the treadle 18.
- the rotating arm portion 54 of the treadle 18 can include one or more apertures 56 for permitting the infrared beam emitted from the infrared (IR) emitter 50 to pass through the rotating arm portion 54 of the treadle 18 and be detected by the infrared (IR) detector 52.
- the infrared beam from the infrared (IR) emitter 50 can be broken by the rotating arm portion 54 of the treadle 18 and the disruption of the infrared beam can be detected by the infrared (IR) detector 52.
- the infrared beam can then be detected again by the infrared (IR) detector 52 as the apertures 56 in the rotating arm portion 54 pass by (i.e. correspond to) the infrared beam.
- the time between the beams being detected by the infrared (IR) detector 52 can be used to calculate the speed of the vehicle entering the ramp 12.
- the speed information can be used by the microcontroller unit (MCU) to engage or disengage one or more of the treadle subunits 16 depending on the calculated speed of the vehicle.
- MCU microcontroller unit
- an exemplary embodiment of the vehicle energy harvester unit 10 can include one or more treadles 50 on the entry ramp 12.
- the treadles 50 can include vehicle speed detection means or a vehicle speed detection assembly, for example, as illustrated in Figure 3.
- the speed of the vehicle entering the ramp 12 can be calculated and the speed information can be used by the microcontroller unit (MCU) to engage or disengage one or more of the treadle subunits 16 depending on the calculated speed of the vehicle.
- MCU microcontroller unit
- spatially relative terms such as “under”, “below”, “lower”, “over”, “upper”, “lateral”, “left”, “right” and the like, may be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, elements described as “under” or “beneath” other elements or features would then be oriented “over” the other elements or features. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the descriptors of relative spatial relationships used herein interpreted accordingly.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Road Paving Structures (AREA)
- Vehicle Body Suspensions (AREA)
- Current-Collector Devices For Electrically Propelled Vehicles (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Vibration Dampers (AREA)
- Braking Elements And Transmission Devices (AREA)
- Motorcycle And Bicycle Frame (AREA)
- Traffic Control Systems (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2010800146130A CN102369446B (en) | 2009-01-27 | 2010-01-27 | Vehicle speed detection device for power generation system |
EP10736364.0A EP2411816B1 (en) | 2009-01-27 | 2010-01-27 | Vehicle speed detection means for power generation system |
CA2788183A CA2788183A1 (en) | 2009-01-27 | 2010-01-27 | Vehicle speed detection means for power generation system |
Applications Claiming Priority (12)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14775009P | 2009-01-27 | 2009-01-27 | |
US14775409P | 2009-01-27 | 2009-01-27 | |
US14775209P | 2009-01-27 | 2009-01-27 | |
US14774809P | 2009-01-27 | 2009-01-27 | |
US14774909P | 2009-01-27 | 2009-01-27 | |
US14774709P | 2009-01-27 | 2009-01-27 | |
US61/147,750 | 2009-01-27 | ||
US61/147,748 | 2009-01-27 | ||
US61/147,752 | 2009-01-27 | ||
US61/147,749 | 2009-01-27 | ||
US61/147,747 | 2009-01-27 | ||
US61/147,754 | 2009-01-27 |
Publications (1)
Publication Number | Publication Date |
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WO2010088310A1 true WO2010088310A1 (en) | 2010-08-05 |
Family
ID=42395991
Family Applications (6)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2010/022289 WO2010088308A1 (en) | 2009-01-27 | 2010-01-27 | Low profile, surface-mounted power generation system |
PCT/US2010/022294 WO2010088312A2 (en) | 2009-01-27 | 2010-01-27 | Reciprocal spring arrangement for power generation system |
PCT/US2010/022291 WO2010088310A1 (en) | 2009-01-27 | 2010-01-27 | Vehicle speed detection means for power generation system |
PCT/US2010/022288 WO2010088307A1 (en) | 2009-01-27 | 2010-01-27 | Weather responsive treadle locking means for power generation system |
PCT/US2010/022296 WO2010088314A2 (en) | 2009-01-27 | 2010-01-27 | Lossless short-duration electrical storage means for power generation system |
PCT/US2010/022287 WO2010088306A1 (en) | 2009-01-27 | 2010-01-27 | Transient absorber for power generation system |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2010/022289 WO2010088308A1 (en) | 2009-01-27 | 2010-01-27 | Low profile, surface-mounted power generation system |
PCT/US2010/022294 WO2010088312A2 (en) | 2009-01-27 | 2010-01-27 | Reciprocal spring arrangement for power generation system |
Family Applications After (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2010/022288 WO2010088307A1 (en) | 2009-01-27 | 2010-01-27 | Weather responsive treadle locking means for power generation system |
PCT/US2010/022296 WO2010088314A2 (en) | 2009-01-27 | 2010-01-27 | Lossless short-duration electrical storage means for power generation system |
PCT/US2010/022287 WO2010088306A1 (en) | 2009-01-27 | 2010-01-27 | Transient absorber for power generation system |
Country Status (5)
Country | Link |
---|---|
US (13) | US8461701B2 (en) |
EP (6) | EP2425526B1 (en) |
CN (6) | CN102369661B (en) |
CA (6) | CA2788183A1 (en) |
WO (6) | WO2010088308A1 (en) |
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WO2018154543A1 (en) | 2017-02-27 | 2018-08-30 | Universidade De Coimbra | Device for applying in a pavement for collecting mechanical energy from vehicles passing over for generating electricity |
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